/* MIPS-specific support for 32-bit ELF
- Copyright 1993, 1994 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
+ different MIPS ELF from other targets. This matters when linking.
+ This file supports both, switching at runtime. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
-#include "libelf.h"
+#include "elf-bfd.h"
#include "elf/mips.h"
/* Get the ECOFF swapping routines. */
#define ECOFF_32
#include "ecoffswap.h"
-static bfd_reloc_status_type mips_elf_hi16_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd,
- char **error));
-static bfd_reloc_status_type mips_elf_got16_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd,
- char **error));
-static bfd_reloc_status_type mips_elf_lo16_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd,
- char **error));
-static bfd_reloc_status_type mips_elf_gprel16_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd,
- char **error));
-static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup
+static bfd_reloc_status_type mips32_64bit_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void mips_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
+static void bfd_mips_elf32_swap_gptab_in
+ PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
+static void bfd_mips_elf32_swap_gptab_out
+ PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
-static boolean mips_elf_object_p PARAMS ((bfd *));
-static void mips_elf_final_write_processing PARAMS ((bfd *));
-static boolean mips_elf_section_from_shdr
+static boolean mips_elf32_object_p PARAMS ((bfd *));
+static boolean mips_elf_create_procedure_table
+ PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
+ struct ecoff_debug_info *));
+static int mips_elf_additional_program_headers PARAMS ((bfd *));
+static boolean mips_elf_modify_segment_map PARAMS ((bfd *));
+static INLINE int elf_mips_isa PARAMS ((flagword));
+static boolean mips_elf32_section_from_shdr
PARAMS ((bfd *, Elf32_Internal_Shdr *, char *));
-static boolean mips_elf_fake_sections
- PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
-static boolean mips_elf_section_from_bfd_section
- PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *));
-static boolean mips_elf_section_processing
+static boolean mips_elf32_section_processing
PARAMS ((bfd *, Elf32_Internal_Shdr *));
-static void mips_elf_symbol_processing PARAMS ((bfd *, asymbol *));
-static boolean mips_elf_read_ecoff_info
- PARAMS ((bfd *, asection *, struct ecoff_debug_info *));
+static boolean mips_elf_is_local_label_name
+ PARAMS ((bfd *, const char *));
static struct bfd_hash_entry *mips_elf_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static struct bfd_link_hash_table *mips_elf_link_hash_table_create
static void mips_elf_relocate_hi16
PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *,
bfd_vma));
+static boolean mips_elf_relocate_got_local
+ PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *,
+ Elf_Internal_Rela *, bfd_byte *, bfd_vma));
+static void mips_elf_relocate_global_got
+ PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
+static bfd_reloc_status_type mips16_jump_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type mips16_gprel_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static boolean mips_elf_adjust_dynindx
+ PARAMS ((struct elf_link_hash_entry *, PTR));
static boolean mips_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+static boolean mips_elf_link_output_symbol_hook
+ PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
+ asection *));
+static boolean mips_elf_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean mips_elf_create_compact_rel_section
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean mips_elf_create_got_section
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean mips_elf_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
+static boolean mips_elf_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static boolean mips_elf_always_size_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean mips_elf_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean mips_elf_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
+ Elf_Internal_Sym *));
+static boolean mips_elf_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
static boolean mips_elf_add_symbol_hook
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *));
+static bfd_reloc_status_type mips_elf_final_gp
+ PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
+static bfd_byte *elf32_mips_get_relocated_section_contents
+ PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
+ bfd_byte *, boolean, asymbol **));
+
+/* This is true for Irix 5 executables, false for normal MIPS ELF ABI
+ executables. FIXME: At the moment, we default to always generating
+ Irix 5 executables. */
+
+#define SGI_COMPAT(abfd) (1)
+
+/* This structure is used to hold .got information when linking. It
+ is stored in the tdata field of the bfd_elf_section_data structure. */
+
+struct mips_got_info
+{
+ /* The symbol index of the first global .got symbol. */
+ unsigned long global_gotsym;
+ /* The number of local .got entries. */
+ unsigned int local_gotno;
+ /* The number of local .got entries we have used. */
+ unsigned int assigned_gotno;
+};
+
+/* The number of local .got entries we reserve. */
+#define MIPS_RESERVED_GOTNO (2)
+
+/* Instructions which appear in a stub. For some reason the stub is
+ slightly different on an SGI system. */
+#define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
+#define STUB_LW(abfd) \
+ (SGI_COMPAT (abfd) \
+ ? 0x8f998010 /* lw t9,0x8010(gp) */ \
+ : 0x8f998000) /* lw t9,0x8000(gp) */
+#define STUB_MOVE 0x03e07825 /* move t7,ra */
+#define STUB_JALR 0x0320f809 /* jal t9 */
+#define STUB_LI16 0x34180000 /* ori t8,zero,0 */
+#define MIPS_FUNCTION_STUB_SIZE (16)
+
+/* Names of sections which appear in the .dynsym section in an Irix 5
+ executable. */
+
+static const char * const mips_elf_dynsym_sec_names[] =
+{
+ ".text",
+ ".init",
+ ".fini",
+ ".data",
+ ".rodata",
+ ".sdata",
+ ".sbss",
+ ".bss",
+ NULL
+};
+
+#define SIZEOF_MIPS_DYNSYM_SECNAMES \
+ (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0])
+
+/* The number of entries in mips_elf_dynsym_sec_names which go in the
+ text segment. */
+
+#define MIPS_TEXT_DYNSYM_SECNO (3)
+
+/* The names of the runtime procedure table symbols used on Irix 5. */
+
+static const char * const mips_elf_dynsym_rtproc_names[] =
+{
+ "_procedure_table",
+ "_procedure_string_table",
+ "_procedure_table_size",
+ NULL
+};
+
+/* These structures are used to generate the .compact_rel section on
+ Irix 5. */
+
+typedef struct
+{
+ unsigned long id1; /* Always one? */
+ unsigned long num; /* Number of compact relocation entries. */
+ unsigned long id2; /* Always two? */
+ unsigned long offset; /* The file offset of the first relocation. */
+ unsigned long reserved0; /* Zero? */
+ unsigned long reserved1; /* Zero? */
+} Elf32_compact_rel;
+
+typedef struct
+{
+ bfd_byte id1[4];
+ bfd_byte num[4];
+ bfd_byte id2[4];
+ bfd_byte offset[4];
+ bfd_byte reserved0[4];
+ bfd_byte reserved1[4];
+} Elf32_External_compact_rel;
+
+typedef struct
+{
+ unsigned int ctype : 1; /* 1: long 0: short format. See below. */
+ unsigned int rtype : 4; /* Relocation types. See below. */
+ unsigned int dist2to : 8;
+ unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
+ unsigned long konst; /* KONST field. See below. */
+ unsigned long vaddr; /* VADDR to be relocated. */
+} Elf32_crinfo;
+
+typedef struct
+{
+ unsigned int ctype : 1; /* 1: long 0: short format. See below. */
+ unsigned int rtype : 4; /* Relocation types. See below. */
+ unsigned int dist2to : 8;
+ unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
+ unsigned long konst; /* KONST field. See below. */
+} Elf32_crinfo2;
+
+typedef struct
+{
+ bfd_byte info[4];
+ bfd_byte konst[4];
+ bfd_byte vaddr[4];
+} Elf32_External_crinfo;
+
+typedef struct
+{
+ bfd_byte info[4];
+ bfd_byte konst[4];
+} Elf32_External_crinfo2;
+
+/* These are the constants used to swap the bitfields in a crinfo. */
+
+#define CRINFO_CTYPE (0x1)
+#define CRINFO_CTYPE_SH (31)
+#define CRINFO_RTYPE (0xf)
+#define CRINFO_RTYPE_SH (27)
+#define CRINFO_DIST2TO (0xff)
+#define CRINFO_DIST2TO_SH (19)
+#define CRINFO_RELVADDR (0x7ffff)
+#define CRINFO_RELVADDR_SH (0)
+
+/* A compact relocation info has long (3 words) or short (2 words)
+ formats. A short format doesn't have VADDR field and relvaddr
+ fields contains ((VADDR - vaddr of the previous entry) >> 2). */
+#define CRF_MIPS_LONG 1
+#define CRF_MIPS_SHORT 0
+
+/* There are 4 types of compact relocation at least. The value KONST
+ has different meaning for each type:
+
+ (type) (konst)
+ CT_MIPS_REL32 Address in data
+ CT_MIPS_WORD Address in word (XXX)
+ CT_MIPS_GPHI_LO GP - vaddr
+ CT_MIPS_JMPAD Address to jump
+ */
+
+#define CRT_MIPS_REL32 0xa
+#define CRT_MIPS_WORD 0xb
+#define CRT_MIPS_GPHI_LO 0xc
+#define CRT_MIPS_JMPAD 0xd
+
+#define mips_elf_set_cr_format(x,format) ((x).ctype = (format))
+#define mips_elf_set_cr_type(x,type) ((x).rtype = (type))
+#define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v))
+#define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2)
+
+static void bfd_elf32_swap_compact_rel_out
+ PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *));
+static void bfd_elf32_swap_crinfo_out
+ PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *));
#define USE_REL 1 /* MIPS uses REL relocations instead of RELA */
R_MIPS_GPREL16, R_MIPS_LITERAL,
R_MIPS_GOT16, R_MIPS_PC16,
R_MIPS_CALL16, R_MIPS_GPREL32,
- R_MIPS_max
+ /* The remaining relocs are defined on Irix, although they are not
+ in the MIPS ELF ABI. */
+ R_MIPS_UNUSED1, R_MIPS_UNUSED2,
+ R_MIPS_UNUSED3,
+ R_MIPS_SHIFT5, R_MIPS_SHIFT6,
+ R_MIPS_64, R_MIPS_GOT_DISP,
+ R_MIPS_GOT_PAGE, R_MIPS_GOT_OFST,
+ R_MIPS_GOT_HI16, R_MIPS_GOT_LO16,
+ R_MIPS_SUB, R_MIPS_INSERT_A,
+ R_MIPS_INSERT_B, R_MIPS_DELETE,
+ R_MIPS_HIGHER, R_MIPS_HIGHEST,
+ R_MIPS_CALL_HI16, R_MIPS_CALL_LO16,
+ R_MIPS_max,
+ /* These relocs are used for the mips16. */
+ R_MIPS16_26 = 100,
+ R_MIPS16_GPREL = 101
+/* start-sanitize-sky */
+ /* These relocs are for the dvp. */
+ , R_MIPS_DVP_11_PCREL = 120
+/* end-sanitize-sky */
};
static reloc_howto_type elf_mips_howto_table[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- mips_elf_hi16_reloc, /* special_function */
+ _bfd_mips_elf_hi16_reloc, /* special_function */
"R_MIPS_HI16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- mips_elf_lo16_reloc, /* special_function */
+ _bfd_mips_elf_lo16_reloc, /* special_function */
"R_MIPS_LO16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- mips_elf_gprel16_reloc, /* special_function */
+ _bfd_mips_elf_gprel16_reloc, /* special_function */
"R_MIPS_GPREL16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- mips_elf_gprel16_reloc, /* special_function */
+ _bfd_mips_elf_gprel16_reloc, /* special_function */
"R_MIPS_LITERAL", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
false), /* pcrel_offset */
/* Reference to global offset table. */
- /* FIXME: This is not handled correctly. */
HOWTO (R_MIPS_GOT16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- mips_elf_got16_reloc, /* special_function */
+ _bfd_mips_elf_got16_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
false, /* partial_inplace */
0, /* src_mask */
false), /* pcrel_offset */
/* 32 bit GP relative reference. */
- /* FIXME: This is not handled correctly. */
HOWTO (R_MIPS_GPREL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ _bfd_mips_elf_gprel32_reloc, /* special_function */
"R_MIPS_GPREL32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The remaining relocs are defined on Irix 5, although they are
+ not defined by the ABI. */
+ { 13 },
+ { 14 },
+ { 15 },
+
+ /* A 5 bit shift field. */
+ HOWTO (R_MIPS_SHIFT5, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 5, /* bitsize */
+ false, /* pc_relative */
+ 6, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_SHIFT5", /* name */
+ true, /* partial_inplace */
+ 0x000007c0, /* src_mask */
+ 0x000007c0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 6 bit shift field. */
+ /* FIXME: This is not handled correctly; a special function is
+ needed to put the most significant bit in the right place. */
+ HOWTO (R_MIPS_SHIFT6, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 6, /* bitsize */
+ false, /* pc_relative */
+ 6, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_SHIFT6", /* name */
+ true, /* partial_inplace */
+ 0x000007c4, /* src_mask */
+ 0x000007c4, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 64 bit relocation. This is used in 32 bit ELF when addresses
+ are 64 bits long; the upper 32 bits are simply a sign extension.
+ The fields of the howto should be the same as for R_MIPS_32,
+ other than the type, name, and special_function. */
+ HOWTO (R_MIPS_64, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ mips32_64bit_reloc, /* special_function */
+ "R_MIPS_64", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Displacement in the global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_GOT_DISP, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GOT_DISP", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Displacement to page pointer in the global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_GOT_PAGE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GOT_PAGE", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Offset from page pointer in the global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_GOT_OFST, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GOT_OFST", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* High 16 bits of displacement in global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_GOT_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GOT_HI16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Low 16 bits of displacement in global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_GOT_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GOT_LO16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 64 bit subtraction. Presumably not used in 32 bit ELF. */
+ { R_MIPS_SUB },
+
+ /* Used to cause the linker to insert and delete instructions? */
+ { R_MIPS_INSERT_A },
+ { R_MIPS_INSERT_B },
+ { R_MIPS_DELETE },
+
+ /* Get the higher values of a 64 bit addend. Presumably not used in
+ 32 bit ELF. */
+ { R_MIPS_HIGHER },
+ { R_MIPS_HIGHEST },
+
+ /* High 16 bits of displacement in global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_CALL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_CALL_HI16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Low 16 bits of displacement in global offset table. */
+ /* FIXME: Not handled correctly. */
+ HOWTO (R_MIPS_CALL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_CALL_LO16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
false) /* pcrel_offset */
};
+/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
+ is a hack to make the linker think that we need 64 bit values. */
+static reloc_howto_type elf_mips_ctor64_howto =
+ HOWTO (R_MIPS_64, /* type */
+ 0, /* rightshift */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ mips32_64bit_reloc, /* special_function */
+ "R_MIPS_64", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* The reloc used for the mips16 jump instruction. */
+static reloc_howto_type elf_mips16_jump_howto =
+ HOWTO (R_MIPS16_26, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ /* This needs complex overflow
+ detection, because the upper four
+ bits must match the PC. */
+ mips16_jump_reloc, /* special_function */
+ "R_MIPS16_26", /* name */
+ true, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* The reloc used for the mips16 gprel instruction. The src_mask and
+ dsk_mask for this howto do not reflect the actual instruction, in
+ which the value is not contiguous; the masks are for the
+ convenience of the relocate_section routine. */
+static reloc_howto_type elf_mips16_gprel_howto =
+ HOWTO (R_MIPS16_GPREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ mips16_gprel_reloc, /* special_function */
+ "R_MIPS16_GPREL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* start-sanitize-sky */
+/* DVP relocations. */
+static reloc_howto_type elf_mips_dvp_11_pcrel_howto =
+ HOWTO (R_MIPS_DVP_11_PCREL, /* type */
+ 3, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 11, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_DVP_11_PCREL", /* name */
+ true, /* partial_inplace */
+ 0x7ff, /* src_mask */
+ 0x7ff, /* dst_mask */
+ true); /* pcrel_offset */
+/* end-sanitize-sky */
+
/* Do a R_MIPS_HI16 relocation. This has to be done in combination
with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
the HI16. Here we just save the information we need; we do the
actual relocation when we see the LO16. MIPS ELF requires that the
- LO16 immediately follow the HI16, so this ought to work. */
+ LO16 immediately follow the HI16. As a GNU extension, we permit an
+ arbitrary number of HI16 relocs to be associated with a single LO16
+ reloc. This extension permits gcc to output the HI and LO relocs
+ itself. */
+
+struct mips_hi16
+{
+ struct mips_hi16 *next;
+ bfd_byte *addr;
+ bfd_vma addend;
+};
-static bfd_byte *mips_hi16_addr;
-static bfd_vma mips_hi16_addend;
+/* FIXME: This should not be a static variable. */
-static bfd_reloc_status_type
-mips_elf_hi16_reloc (abfd,
+static struct mips_hi16 *mips_hi16_list;
+
+bfd_reloc_status_type
+_bfd_mips_elf_hi16_reloc (abfd,
reloc_entry,
symbol,
data,
{
bfd_reloc_status_type ret;
bfd_vma relocation;
+ struct mips_hi16 *n;
/* If we're relocating, and this an external symbol, we don't want
to change anything. */
return bfd_reloc_ok;
}
- /* FIXME: The symbol _gp_disp requires special handling, which we do
- not do. */
+ ret = bfd_reloc_ok;
+
if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
- abort ();
+ {
+ boolean relocateable;
+ bfd_vma gp;
- ret = bfd_reloc_ok;
- if (symbol->section == &bfd_und_section
- && output_bfd == (bfd *) NULL)
- ret = bfd_reloc_undefined;
+ if (ret == bfd_reloc_undefined)
+ abort ();
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
+ if (output_bfd != NULL)
+ relocateable = true;
+ else
+ {
+ relocateable = false;
+ output_bfd = symbol->section->output_section->owner;
+ }
+
+ ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
+ error_message, &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
+
+ relocation = gp - reloc_entry->address;
+ }
else
- relocation = symbol->value;
+ {
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ ret = bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+ }
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
return bfd_reloc_outofrange;
/* Save the information, and let LO16 do the actual relocation. */
- mips_hi16_addr = (bfd_byte *) data + reloc_entry->address;
- mips_hi16_addend = relocation;
+ n = (struct mips_hi16 *) bfd_malloc (sizeof *n);
+ if (n == NULL)
+ return bfd_reloc_outofrange;
+ n->addr = (bfd_byte *) data + reloc_entry->address;
+ n->addend = relocation;
+ n->next = mips_hi16_list;
+ mips_hi16_list = n;
if (output_bfd != (bfd *) NULL)
reloc_entry->address += input_section->output_offset;
inplace relocation; this function exists in order to do the
R_MIPS_HI16 relocation described above. */
-static bfd_reloc_status_type
-mips_elf_lo16_reloc (abfd,
+bfd_reloc_status_type
+_bfd_mips_elf_lo16_reloc (abfd,
reloc_entry,
symbol,
data,
bfd *output_bfd;
char **error_message;
{
- /* FIXME: The symbol _gp_disp requires special handling, which we do
- not do. */
- if (output_bfd == (bfd *) NULL
- && strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
- abort ();
-
- if (mips_hi16_addr != (bfd_byte *) NULL)
- {
- unsigned long insn;
- unsigned long val;
- unsigned long vallo;
-
- /* Do the HI16 relocation. Note that we actually don't need to
- know anything about the LO16 itself, except where to find the
- low 16 bits of the addend needed by the LO16. */
- insn = bfd_get_32 (abfd, mips_hi16_addr);
- vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
- & 0xffff);
- val = ((insn & 0xffff) << 16) + vallo;
- val += mips_hi16_addend;
-
- /* The low order 16 bits are always treated as a signed value.
- Therefore, a negative value in the low order bits requires an
- adjustment in the high order bits. We need to make this
- adjustment in two ways: once for the bits we took from the
- data, and once for the bits we are putting back in to the
- data. */
- if ((vallo & 0x8000) != 0)
- val -= 0x10000;
- if ((val & 0x8000) != 0)
- val += 0x10000;
+ arelent gp_disp_relent;
+
+ if (mips_hi16_list != NULL)
+ {
+ struct mips_hi16 *l;
+
+ l = mips_hi16_list;
+ while (l != NULL)
+ {
+ unsigned long insn;
+ unsigned long val;
+ unsigned long vallo;
+ struct mips_hi16 *next;
+
+ /* Do the HI16 relocation. Note that we actually don't need
+ to know anything about the LO16 itself, except where to
+ find the low 16 bits of the addend needed by the LO16. */
+ insn = bfd_get_32 (abfd, l->addr);
+ vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
+ & 0xffff);
+ val = ((insn & 0xffff) << 16) + vallo;
+ val += l->addend;
+
+ /* The low order 16 bits are always treated as a signed
+ value. Therefore, a negative value in the low order bits
+ requires an adjustment in the high order bits. We need
+ to make this adjustment in two ways: once for the bits we
+ took from the data, and once for the bits we are putting
+ back in to the data. */
+ if ((vallo & 0x8000) != 0)
+ val -= 0x10000;
+ if ((val & 0x8000) != 0)
+ val += 0x10000;
+
+ insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
+ bfd_put_32 (abfd, insn, l->addr);
+
+ if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
+ {
+ gp_disp_relent = *reloc_entry;
+ reloc_entry = &gp_disp_relent;
+ reloc_entry->addend = l->addend;
+ }
+
+ next = l->next;
+ free (l);
+ l = next;
+ }
+
+ mips_hi16_list = NULL;
+ }
+ else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
+ {
+ bfd_reloc_status_type ret;
+ bfd_vma gp, relocation;
+
+ /* FIXME: Does this case ever occur? */
+
+ ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
- insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
- bfd_put_32 (abfd, insn, mips_hi16_addr);
+ relocation = gp - reloc_entry->address;
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
- mips_hi16_addr = (bfd_byte *) NULL;
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ gp_disp_relent = *reloc_entry;
+ reloc_entry = &gp_disp_relent;
+ reloc_entry->addend = relocation - 4;
}
/* Now do the LO16 reloc in the usual way. */
This implementation suffices for the assembler, but the linker does
not yet know how to create global offset tables. */
-static bfd_reloc_status_type
-mips_elf_got16_reloc (abfd,
+bfd_reloc_status_type
+_bfd_mips_elf_got16_reloc (abfd,
reloc_entry,
symbol,
data,
just like HI16. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) != 0)
- return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
+ return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
abort ();
}
-/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
- become the offset from the gp register. This function also handles
- R_MIPS_LITERAL relocations, although those can be handled more
- cleverly because the entries in the .lit8 and .lit4 sections can be
- merged. */
+/* We have to figure out the gp value, so that we can adjust the
+ symbol value correctly. We look up the symbol _gp in the output
+ BFD. If we can't find it, we're stuck. We cache it in the ELF
+ target data. We don't need to adjust the symbol value for an
+ external symbol if we are producing relocateable output. */
static bfd_reloc_status_type
-mips_elf_gprel16_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
+mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
bfd *output_bfd;
+ asymbol *symbol;
+ boolean relocateable;
char **error_message;
+ bfd_vma *pgp;
{
- boolean relocateable;
- bfd_vma relocation;
- unsigned long val;
- unsigned long insn;
-
- /* If we're relocating, and this is an external symbol with no
- addend, we don't want to change anything. We will only have an
- addend if this is a newly created reloc, not read from an ELF
- file. */
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- if (output_bfd != (bfd *) NULL)
- relocateable = true;
- else
+ if (bfd_is_und_section (symbol->section)
+ && ! relocateable)
{
- relocateable = false;
- output_bfd = symbol->section->output_section->owner;
+ *pgp = 0;
+ return bfd_reloc_undefined;
}
- if (symbol->section == &bfd_und_section
- && relocateable == false)
- return bfd_reloc_undefined;
-
- /* We have to figure out the gp value, so that we can adjust the
- symbol value correctly. We look up the symbol _gp in the output
- BFD. If we can't find it, we're stuck. We cache it in the ELF
- target data. We don't need to adjust the symbol value for an
- external symbol if we are producing relocateable output. */
- if (elf_gp (output_bfd) == 0
- && (relocateable == false
+ *pgp = _bfd_get_gp_value (output_bfd);
+ if (*pgp == 0
+ && (! relocateable
|| (symbol->flags & BSF_SECTION_SYM) != 0))
{
- if (relocateable != false)
+ if (relocateable)
{
/* Make up a value. */
- elf_gp (output_bfd) =
- symbol->section->output_section->vma + 0x4000;
+ *pgp = symbol->section->output_section->vma + 0x4000;
+ _bfd_set_gp_value (output_bfd, *pgp);
}
else
{
name = bfd_asymbol_name (*sym);
if (*name == '_' && strcmp (name, "_gp") == 0)
{
- elf_gp (output_bfd) = bfd_asymbol_value (*sym);
+ *pgp = bfd_asymbol_value (*sym);
+ _bfd_set_gp_value (output_bfd, *pgp);
break;
}
}
if (i >= count)
{
/* Only get the error once. */
- elf_gp (output_bfd) = 4;
+ *pgp = 4;
+ _bfd_set_gp_value (output_bfd, *pgp);
*error_message =
(char *) "GP relative relocation when _gp not defined";
return bfd_reloc_dangerous;
}
}
- if (bfd_is_com_section (symbol->section))
+ return bfd_reloc_ok;
+}
+
+/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
+ become the offset from the gp register. This function also handles
+ R_MIPS_LITERAL relocations, although those can be handled more
+ cleverly because the entries in the .lit8 and .lit4 sections can be
+ merged. */
+
+static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *,
+ arelent *, asection *,
+ boolean, PTR, bfd_vma));
+
+bfd_reloc_status_type
+_bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ boolean relocateable;
+ bfd_reloc_status_type ret;
+ bfd_vma gp;
+
+ /* If we're relocating, and this is an external symbol with no
+ addend, we don't want to change anything. We will only have an
+ addend if this is a newly created reloc, not read from an ELF
+ file. */
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (output_bfd != (bfd *) NULL)
+ relocateable = true;
+ else
+ {
+ relocateable = false;
+ output_bfd = symbol->section->output_section->owner;
+ }
+
+ ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
+ &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
+
+ return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
+ relocateable, data, gp);
+}
+
+static bfd_reloc_status_type
+gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
+ gp)
+ bfd *abfd;
+ asymbol *symbol;
+ arelent *reloc_entry;
+ asection *input_section;
+ boolean relocateable;
+ PTR data;
+ bfd_vma gp;
+{
+ bfd_vma relocation;
+ unsigned long insn;
+ unsigned long val;
+
+ if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
/* Set val to the offset into the section or symbol. */
- val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
- if (val & 0x8000)
- val -= 0x10000;
+ if (reloc_entry->howto->src_mask == 0)
+ {
+ /* This case occurs with the 64-bit MIPS ELF ABI. */
+ val = reloc_entry->addend;
+ }
+ else
+ {
+ val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
+ if (val & 0x8000)
+ val -= 0x10000;
+ }
/* Adjust val for the final section location and GP value. If we
are producing relocateable output, we don't want to do this for
an external symbol. */
- if (relocateable == false
+ if (! relocateable
|| (symbol->flags & BSF_SECTION_SYM) != 0)
- val += relocation - elf_gp (output_bfd);
+ val += relocation - gp;
insn = (insn &~ 0xffff) | (val & 0xffff);
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
- if (relocateable != false)
+ if (relocateable)
reloc_entry->address += input_section->output_offset;
/* Make sure it fit in 16 bits. */
return bfd_reloc_ok;
}
+/* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
+ from the gp register? XXX */
+
+static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *,
+ arelent *, asection *,
+ boolean, PTR, bfd_vma));
+
+bfd_reloc_status_type
+_bfd_mips_elf_gprel32_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ boolean relocateable;
+ bfd_reloc_status_type ret;
+ bfd_vma gp;
+
+ /* If we're relocating, and this is an external symbol with no
+ addend, we don't want to change anything. We will only have an
+ addend if this is a newly created reloc, not read from an ELF
+ file. */
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ *error_message = (char *)
+ "32bits gp relative relocation occurs for an external symbol";
+ return bfd_reloc_outofrange;
+ }
+
+ if (output_bfd != (bfd *) NULL)
+ {
+ relocateable = true;
+ gp = _bfd_get_gp_value (output_bfd);
+ }
+ else
+ {
+ relocateable = false;
+ output_bfd = symbol->section->output_section->owner;
+
+ ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
+ error_message, &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
+ }
+
+ return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
+ relocateable, data, gp);
+}
+
+static bfd_reloc_status_type
+gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
+ gp)
+ bfd *abfd;
+ asymbol *symbol;
+ arelent *reloc_entry;
+ asection *input_section;
+ boolean relocateable;
+ PTR data;
+ bfd_vma gp;
+{
+ bfd_vma relocation;
+ unsigned long val;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ if (reloc_entry->howto->src_mask == 0)
+ {
+ /* This case arises with the 64-bit MIPS ELF ABI. */
+ val = 0;
+ }
+ else
+ val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+
+ /* Set val to the offset into the section or symbol. */
+ val += reloc_entry->addend;
+
+ /* Adjust val for the final section location and GP value. If we
+ are producing relocateable output, we don't want to do this for
+ an external symbol. */
+ if (! relocateable
+ || (symbol->flags & BSF_SECTION_SYM) != 0)
+ val += relocation - gp;
+
+ bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
+
+ if (relocateable)
+ reloc_entry->address += input_section->output_offset;
+
+ return bfd_reloc_ok;
+}
+
+/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
+ generated when addreses are 64 bits. The upper 32 bits are a simle
+ sign extension. */
+
+static bfd_reloc_status_type
+mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ bfd_reloc_status_type r;
+ arelent reloc32;
+ unsigned long val;
+ bfd_size_type addr;
+
+ r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+ if (r != bfd_reloc_continue)
+ return r;
+
+ /* Do a normal 32 bit relocation on the lower 32 bits. */
+ reloc32 = *reloc_entry;
+ if (bfd_big_endian (abfd))
+ reloc32.address += 4;
+ reloc32.howto = &elf_mips_howto_table[R_MIPS_32];
+ r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
+ output_bfd, error_message);
+
+ /* Sign extend into the upper 32 bits. */
+ val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
+ if ((val & 0x80000000) != 0)
+ val = 0xffffffff;
+ else
+ val = 0;
+ addr = reloc_entry->address;
+ if (bfd_little_endian (abfd))
+ addr += 4;
+ bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
+
+ return r;
+}
+
+/* Handle a mips16 jump. */
+
+static bfd_reloc_status_type
+mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* FIXME. */
+ {
+ static boolean warned;
+
+ if (! warned)
+ (*_bfd_error_handler)
+ ("Linking mips16 objects into %s format is not supported",
+ bfd_get_target (input_section->output_section->owner));
+ warned = true;
+ }
+
+ return bfd_reloc_undefined;
+}
+
+/* Handle a mips16 GP relative reloc. */
+
+static bfd_reloc_status_type
+mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ boolean relocateable;
+ bfd_reloc_status_type ret;
+ bfd_vma gp;
+ unsigned short extend, insn;
+ unsigned long final;
+
+ /* If we're relocating, and this is an external symbol with no
+ addend, we don't want to change anything. We will only have an
+ addend if this is a newly created reloc, not read from an ELF
+ file. */
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (output_bfd != NULL)
+ relocateable = true;
+ else
+ {
+ relocateable = false;
+ output_bfd = symbol->section->output_section->owner;
+ }
+
+ ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
+ &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ /* Pick up the mips16 extend instruction and the real instruction. */
+ extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
+ insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
+
+ /* Stuff the current addend back as a 32 bit value, do the usual
+ relocation, and then clean up. */
+ bfd_put_32 (abfd,
+ (((extend & 0x1f) << 11)
+ | (extend & 0x7e0)
+ | (insn & 0x1f)),
+ (bfd_byte *) data + reloc_entry->address);
+
+ ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
+ relocateable, data, gp);
+
+ final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ bfd_put_16 (abfd,
+ ((extend & 0xf800)
+ | ((final >> 11) & 0x1f)
+ | (final & 0x7e0)),
+ (bfd_byte *) data + reloc_entry->address);
+ bfd_put_16 (abfd,
+ ((insn & 0xffe0)
+ | (final & 0x1f)),
+ (bfd_byte *) data + reloc_entry->address + 2);
+
+ return ret;
+}
+
+/* Return the ISA for a MIPS e_flags value. */
+
+static INLINE int
+elf_mips_isa (flags)
+ flagword flags;
+{
+ switch (flags & EF_MIPS_ARCH)
+ {
+ case E_MIPS_ARCH_1:
+ return 1;
+ case E_MIPS_ARCH_2:
+ return 2;
+ case E_MIPS_ARCH_3:
+ return 3;
+ case E_MIPS_ARCH_4:
+ return 4;
+ }
+ return 4;
+}
+
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
struct elf_reloc_map {
{ BFD_RELOC_NONE, R_MIPS_NONE, },
{ BFD_RELOC_16, R_MIPS_16 },
{ BFD_RELOC_32, R_MIPS_32 },
- { BFD_RELOC_CTOR, R_MIPS_32 },
- { BFD_RELOC_32_PCREL, R_MIPS_REL32 },
+ { BFD_RELOC_64, R_MIPS_64 },
{ BFD_RELOC_MIPS_JMP, R_MIPS_26 },
{ BFD_RELOC_HI16_S, R_MIPS_HI16 },
{ BFD_RELOC_LO16, R_MIPS_LO16 },
{ BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
{ BFD_RELOC_16_PCREL, R_MIPS_PC16 },
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
- { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }
+ { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 },
+ { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
+ { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
+ { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
+ { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }
};
/* Given a BFD reloc type, return a howto structure. */
-static const struct reloc_howto_struct *
+static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
- int i;
+ unsigned int i;
for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
{
if (mips_reloc_map[i].bfd_reloc_val == code)
return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val];
}
+
+ /* We need to handle BFD_RELOC_CTOR specially. If this is a mips3
+ file, then we assume that we are using 64 bit addresses, and use
+ R_MIPS_64. Otherwise, we use R_MIPS_32. */
+ if (code == BFD_RELOC_CTOR)
+ {
+ if (elf_mips_isa (elf_elfheader (abfd)->e_flags) < 3)
+ return &elf_mips_howto_table[(int) R_MIPS_32];
+ else
+ return &elf_mips_ctor64_howto;
+ }
+
+ /* Special handling for the MIPS16 relocs, since they are made up
+ reloc types with a large value. */
+ if (code == BFD_RELOC_MIPS16_JMP)
+ return &elf_mips16_jump_howto;
+ else if (code == BFD_RELOC_MIPS16_GPREL)
+ return &elf_mips16_gprel_howto;
+/* start-sanitize-sky */
+ else if (code == BFD_RELOC_MIPS_DVP_11_PCREL)
+ return &elf_mips_dvp_11_pcrel_howto;
+/* end-sanitize-sky */
+
return NULL;
}
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
- cache_ptr->howto = &elf_mips_howto_table[r_type];
+ if (r_type == R_MIPS16_26)
+ cache_ptr->howto = &elf_mips16_jump_howto;
+ else if (r_type == R_MIPS16_GPREL)
+ cache_ptr->howto = &elf_mips16_gprel_howto;
+/* start-sanitize-sky */
+ else if (r_type == R_MIPS_DVP_11_PCREL)
+ cache_ptr->howto = &elf_mips_dvp_11_pcrel_howto;
+/* end-sanitize-sky */
+ else
+ {
+ BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
+ cache_ptr->howto = &elf_mips_howto_table[r_type];
+ }
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
value for the object file. We get the addend now, rather than
(bfd_byte *) ex->ri_gp_value);
}
-/* Swap an entry in a .gptab section. Note that these routines rely
- on the equivalence of the two elements of the union. */
+/* In the 64 bit ABI, the .MIPS.options section holds register
+ information in an Elf64_Reginfo structure. These routines swap
+ them in and out. They are globally visible because they are used
+ outside of BFD. These routines are here so that gas can call them
+ without worrying about whether the 64 bit ABI has been included. */
-static void
-bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
+void
+bfd_mips_elf64_swap_reginfo_in (abfd, ex, in)
bfd *abfd;
- const Elf32_External_gptab *ex;
- Elf32_gptab *in;
+ const Elf64_External_RegInfo *ex;
+ Elf64_Internal_RegInfo *in;
{
- in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value);
- in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes);
+ in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask);
+ in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad);
+ in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]);
+ in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]);
+ in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]);
+ in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]);
+ in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value);
}
-static void
-bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
+void
+bfd_mips_elf64_swap_reginfo_out (abfd, in, ex)
bfd *abfd;
- const Elf32_gptab *in;
- Elf32_External_gptab *ex;
+ const Elf64_Internal_RegInfo *in;
+ Elf64_External_RegInfo *ex;
{
- bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value,
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask,
+ (bfd_byte *) ex->ri_gprmask);
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad,
+ (bfd_byte *) ex->ri_pad);
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0],
+ (bfd_byte *) ex->ri_cprmask[0]);
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1],
+ (bfd_byte *) ex->ri_cprmask[1]);
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2],
+ (bfd_byte *) ex->ri_cprmask[2]);
+ bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3],
+ (bfd_byte *) ex->ri_cprmask[3]);
+ bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value,
+ (bfd_byte *) ex->ri_gp_value);
+}
+
+/* Swap an entry in a .gptab section. Note that these routines rely
+ on the equivalence of the two elements of the union. */
+
+static void
+bfd_mips_elf32_swap_gptab_in (abfd, ex, in)
+ bfd *abfd;
+ const Elf32_External_gptab *ex;
+ Elf32_gptab *in;
+{
+ in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value);
+ in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes);
+}
+
+static void
+bfd_mips_elf32_swap_gptab_out (abfd, in, ex)
+ bfd *abfd;
+ const Elf32_gptab *in;
+ Elf32_External_gptab *ex;
+{
+ bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value,
ex->gt_entry.gt_g_value);
bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes,
ex->gt_entry.gt_bytes);
}
+
+static void
+bfd_elf32_swap_compact_rel_out (abfd, in, ex)
+ bfd *abfd;
+ const Elf32_compact_rel *in;
+ Elf32_External_compact_rel *ex;
+{
+ bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1);
+ bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num);
+ bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2);
+ bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset);
+ bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0);
+ bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1);
+}
+
+static void
+bfd_elf32_swap_crinfo_out (abfd, in, ex)
+ bfd *abfd;
+ const Elf32_crinfo *in;
+ Elf32_External_crinfo *ex;
+{
+ unsigned long l;
+
+ l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH)
+ | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH)
+ | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH)
+ | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH));
+ bfd_h_put_32 (abfd, (bfd_vma) l, ex->info);
+ bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst);
+ bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr);
+}
+
+/* Swap in an options header. */
+
+void
+bfd_mips_elf_swap_options_in (abfd, ex, in)
+ bfd *abfd;
+ const Elf_External_Options *ex;
+ Elf_Internal_Options *in;
+{
+ in->kind = bfd_h_get_8 (abfd, ex->kind);
+ in->size = bfd_h_get_8 (abfd, ex->size);
+ in->section = bfd_h_get_16 (abfd, ex->section);
+ in->info = bfd_h_get_32 (abfd, ex->info);
+}
+
+/* Swap out an options header. */
+
+void
+bfd_mips_elf_swap_options_out (abfd, in, ex)
+ bfd *abfd;
+ const Elf_Internal_Options *in;
+ Elf_External_Options *ex;
+{
+ bfd_h_put_8 (abfd, in->kind, ex->kind);
+ bfd_h_put_8 (abfd, in->size, ex->size);
+ bfd_h_put_16 (abfd, in->section, ex->section);
+ bfd_h_put_32 (abfd, in->info, ex->info);
+}
\f
/* Determine whether a symbol is global for the purposes of splitting
the symbol table into global symbols and local symbols. At least
return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false;
}
\f
-/* Set the right machine number for a MIPS ELF file. */
+/* Set the right machine number for a MIPS ELF file. This is used for
+ both the 32-bit and the 64-bit ABI. */
-static boolean
-mips_elf_object_p (abfd)
+boolean
+_bfd_mips_elf_object_p (abfd)
bfd *abfd;
{
switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH)
{
default:
case E_MIPS_ARCH_1:
- /* Just use the default, which was set in elfcode.h. */
+ (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 3000);
break;
case E_MIPS_ARCH_2:
case E_MIPS_ARCH_3:
(void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 4000);
break;
+
+ case E_MIPS_ARCH_4:
+ (void) bfd_default_set_arch_mach (abfd, bfd_arch_mips, 8000);
+ break;
}
+ return true;
+}
+
+/* Set the right machine number for a 32-bit MIPS ELF file. */
+
+static boolean
+mips_elf32_object_p (abfd)
+ bfd *abfd;
+{
/* Irix 5 is broken. Object file symbol tables are not always
sorted correctly such that local symbols precede global symbols,
- and the sh_info field in the symbol table is not always right.
- We try to quickly check whether the symbol table is broken for
- this BFD, and, if it is, we set elf_bad_symtab in tdata. */
- if (elf_onesymtab (abfd) != 0)
- {
- Elf_Internal_Shdr *symtab_hdr;
- Elf32_External_Sym esym;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- if (bfd_seek (abfd,
- (symtab_hdr->sh_offset
- + symtab_hdr->sh_size
- - sizeof (Elf32_External_Sym)),
- SEEK_SET) != 0
- || (bfd_read ((PTR) &esym, 1, sizeof (Elf32_External_Sym), abfd)
- != sizeof (Elf32_External_Sym)))
- return false;
- if (ELF_ST_BIND (bfd_h_get_8 (abfd, (bfd_byte *) esym.st_info))
- == STB_LOCAL)
- elf_bad_symtab (abfd) = true;
- }
+ and the sh_info field in the symbol table is not always right. */
+ elf_bad_symtab (abfd) = true;
- return true;
+ return _bfd_mips_elf_object_p (abfd);
}
/* The final processing done just before writing out a MIPS ELF object
file. This gets the MIPS architecture right based on the machine
- number. */
+ number. This is used by both the 32-bit and the 64-bit ABI. */
-static void
-mips_elf_final_write_processing (abfd)
+/*ARGSUSED*/
+void
+_bfd_mips_elf_final_write_processing (abfd, linker)
bfd *abfd;
+ boolean linker;
{
unsigned long val;
unsigned int i;
Elf_Internal_Shdr **hdrpp;
+ const char *name;
+ asection *sec;
switch (bfd_get_mach (abfd))
{
val = E_MIPS_ARCH_3;
break;
+ case 8000:
+ val = E_MIPS_ARCH_4;
+ break;
+
default:
- return;
+ val = 0;
+ break;
}
elf_elfheader (abfd)->e_flags &=~ EF_MIPS_ARCH;
i < elf_elfheader (abfd)->e_shnum;
i++, hdrpp++)
{
- if ((*hdrpp)->sh_type == SHT_MIPS_GPTAB)
+ switch ((*hdrpp)->sh_type)
{
- const char *name;
- asection *sec;
+ case SHT_MIPS_LIBLIST:
+ sec = bfd_get_section_by_name (abfd, ".dynstr");
+ if (sec != NULL)
+ (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
+ break;
- BFD_ASSERT ((*hdrpp)->rawdata != NULL);
- name = ((asection *) (*hdrpp)->rawdata)->name;
+ case SHT_MIPS_GPTAB:
+ BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
+ name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
BFD_ASSERT (name != NULL
&& strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0);
sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1);
BFD_ASSERT (sec != NULL);
(*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
+ break;
+
+ case SHT_MIPS_CONTENT:
+ BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
+ name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
+ BFD_ASSERT (name != NULL
+ && strncmp (name, ".MIPS.content",
+ sizeof ".MIPS.content" - 1) == 0);
+ sec = bfd_get_section_by_name (abfd,
+ name + sizeof ".MIPS.content" - 1);
+ BFD_ASSERT (sec != NULL);
+ (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
+ break;
+
+ case SHT_MIPS_SYMBOL_LIB:
+ sec = bfd_get_section_by_name (abfd, ".dynsym");
+ if (sec != NULL)
+ (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
+ sec = bfd_get_section_by_name (abfd, ".liblist");
+ if (sec != NULL)
+ (*hdrpp)->sh_info = elf_section_data (sec)->this_idx;
+ break;
+
+ case SHT_MIPS_EVENTS:
+ BFD_ASSERT ((*hdrpp)->bfd_section != NULL);
+ name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section);
+ BFD_ASSERT (name != NULL);
+ if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0)
+ sec = bfd_get_section_by_name (abfd,
+ name + sizeof ".MIPS.events" - 1);
+ else
+ {
+ BFD_ASSERT (strncmp (name, ".MIPS.post_rel",
+ sizeof ".MIPS.post_rel" - 1) == 0);
+ sec = bfd_get_section_by_name (abfd,
+ (name
+ + sizeof ".MIPS.post_rel" - 1));
+ }
+ BFD_ASSERT (sec != NULL);
+ (*hdrpp)->sh_link = elf_section_data (sec)->this_idx;
+ break;
+ }
+ }
+}
+\f
+/* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
+
+boolean
+_bfd_mips_elf_set_private_flags (abfd, flags)
+ bfd *abfd;
+ flagword flags;
+{
+ BFD_ASSERT (!elf_flags_init (abfd)
+ || elf_elfheader (abfd)->e_flags == flags);
+
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = true;
+ return true;
+}
+
+/* Copy backend specific data from one object module to another */
+
+boolean
+_bfd_mips_elf_copy_private_bfd_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return true;
+
+ BFD_ASSERT (!elf_flags_init (obfd)
+ || (elf_elfheader (obfd)->e_flags
+ == elf_elfheader (ibfd)->e_flags));
+
+ elf_gp (obfd) = elf_gp (ibfd);
+ elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
+ elf_flags_init (obfd) = true;
+ return true;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+boolean
+_bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ flagword old_flags;
+ flagword new_flags;
+ boolean ok;
+
+ /* Check if we have the same endianess */
+ if (ibfd->xvec->byteorder != obfd->xvec->byteorder
+ && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
+ {
+ (*_bfd_error_handler)
+ ("%s: compiled for a %s endian system and target is %s endian",
+ bfd_get_filename (ibfd),
+ bfd_big_endian (ibfd) ? "big" : "little",
+ bfd_big_endian (obfd) ? "big" : "little");
+
+ bfd_set_error (bfd_error_wrong_format);
+ return false;
+ }
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return true;
+
+ new_flags = elf_elfheader (ibfd)->e_flags;
+ elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
+ old_flags = elf_elfheader (obfd)->e_flags;
+
+ if (! elf_flags_init (obfd))
+ {
+ elf_flags_init (obfd) = true;
+ elf_elfheader (obfd)->e_flags = new_flags;
+
+ if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
+ && bfd_get_arch_info (obfd)->the_default)
+ {
+ if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
+ bfd_get_mach (ibfd)))
+ return false;
+ }
+
+ return true;
+ }
+
+ /* Check flag compatibility. */
+
+ new_flags &= ~EF_MIPS_NOREORDER;
+ old_flags &= ~EF_MIPS_NOREORDER;
+
+ if (new_flags == old_flags)
+ return true;
+
+ ok = true;
+
+ if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC))
+ {
+ new_flags &= ~EF_MIPS_PIC;
+ old_flags &= ~EF_MIPS_PIC;
+ (*_bfd_error_handler)
+ ("%s: linking PIC files with non-PIC files",
+ bfd_get_filename (ibfd));
+ ok = false;
+ }
+
+ if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC))
+ {
+ new_flags &= ~EF_MIPS_CPIC;
+ old_flags &= ~EF_MIPS_CPIC;
+ (*_bfd_error_handler)
+ ("%s: linking abicalls files with non-abicalls files",
+ bfd_get_filename (ibfd));
+ ok = false;
+ }
+
+ /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3
+ and -mips4 code. They will normally use the same data sizes and
+ calling conventions. */
+ if ((new_flags & EF_MIPS_ARCH) != (old_flags & EF_MIPS_ARCH))
+ {
+ int new_isa, old_isa;
+
+ new_isa = elf_mips_isa (new_flags);
+ old_isa = elf_mips_isa (old_flags);
+ if ((new_isa == 1 || new_isa == 2)
+ ? (old_isa != 1 && old_isa != 2)
+ : (old_isa == 1 || old_isa == 2))
+ {
+ (*_bfd_error_handler)
+ ("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)",
+ bfd_get_filename (ibfd), new_isa, old_isa);
+ ok = false;
}
+
+ new_flags &= ~ EF_MIPS_ARCH;
+ old_flags &= ~ EF_MIPS_ARCH;
+ }
+
+ /* Warn about any other mismatches */
+ if (new_flags != old_flags)
+ {
+ (*_bfd_error_handler)
+ ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
+ bfd_get_filename (ibfd), (unsigned long) new_flags,
+ (unsigned long) old_flags);
+ ok = false;
+ }
+
+ if (! ok)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
+
+ return true;
}
\f
/* Handle a MIPS specific section when reading an object file. This
is called when elfcode.h finds a section with an unknown type.
+ This routine supports both the 32-bit and 64-bit ELF ABI.
+
FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure
how to. */
-static boolean
-mips_elf_section_from_shdr (abfd, hdr, name)
+boolean
+_bfd_mips_elf_section_from_shdr (abfd, hdr, name)
bfd *abfd;
- Elf32_Internal_Shdr *hdr;
- char *name;
+ Elf_Internal_Shdr *hdr;
+ const char *name;
{
- asection *newsect;
-
/* There ought to be a place to keep ELF backend specific flags, but
at the moment there isn't one. We just keep track of the
sections by their name, instead. Fortunately, the ABI gives
if (strcmp (name, ".liblist") != 0)
return false;
break;
+ case SHT_MIPS_MSYM:
+ if (strcmp (name, ".msym") != 0)
+ return false;
+ break;
case SHT_MIPS_CONFLICT:
if (strcmp (name, ".conflict") != 0)
return false;
|| hdr->sh_size != sizeof (Elf32_External_RegInfo))
return false;
break;
+ case SHT_MIPS_IFACE:
+ if (strcmp (name, ".MIPS.interfaces") != 0)
+ return false;
+ break;
+ case SHT_MIPS_CONTENT:
+ if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0)
+ return false;
+ break;
case SHT_MIPS_OPTIONS:
- if (strcmp (name, ".options") != 0)
+ if (strcmp (name, ".options") != 0
+ && strcmp (name, ".MIPS.options") != 0)
+ return false;
+ break;
+ case SHT_MIPS_DWARF:
+ if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0)
+ return false;
+ break;
+ case SHT_MIPS_SYMBOL_LIB:
+ if (strcmp (name, ".MIPS.symlib") != 0)
+ return false;
+ break;
+ case SHT_MIPS_EVENTS:
+ if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0
+ && strncmp (name, ".MIPS.post_rel",
+ sizeof ".MIPS.post_rel" - 1) != 0)
return false;
break;
default:
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
return false;
- newsect = (asection *) hdr->rawdata;
if (hdr->sh_type == SHT_MIPS_DEBUG)
{
- if (! bfd_set_section_flags (abfd, newsect,
- (bfd_get_section_flags (abfd, newsect)
+ if (! bfd_set_section_flags (abfd, hdr->bfd_section,
+ (bfd_get_section_flags (abfd,
+ hdr->bfd_section)
| SEC_DEBUGGING)))
return false;
}
+ return true;
+}
+
+/* Handle a 32-bit MIPS ELF specific section. */
+
+static boolean
+mips_elf32_section_from_shdr (abfd, hdr, name)
+ bfd *abfd;
+ Elf_Internal_Shdr *hdr;
+ char *name;
+{
+ if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name))
+ return false;
+
/* FIXME: We should record sh_info for a .gptab section. */
/* For a .reginfo section, set the gp value in the tdata information
from the contents of this section. We need the gp value while
- processing relocs, so we just get it now. */
+ processing relocs, so we just get it now. The .reginfo section
+ is not used in the 64-bit MIPS ELF ABI. */
if (hdr->sh_type == SHT_MIPS_REGINFO)
{
Elf32_External_RegInfo ext;
Elf32_RegInfo s;
- if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext,
+ if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext,
(file_ptr) 0, sizeof ext))
return false;
bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s);
elf_gp (abfd) = s.ri_gp_value;
}
+ /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and
+ set the gp value based on what we find. We may see both
+ SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case,
+ they should agree. */
+ if (hdr->sh_type == SHT_MIPS_OPTIONS)
+ {
+ bfd_byte *contents, *l, *lend;
+
+ contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
+ if (contents == NULL)
+ return false;
+ if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents,
+ (file_ptr) 0, hdr->sh_size))
+ {
+ free (contents);
+ return false;
+ }
+ l = contents;
+ lend = contents + hdr->sh_size;
+ while (l + sizeof (Elf_External_Options) <= lend)
+ {
+ Elf_Internal_Options intopt;
+
+ bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
+ &intopt);
+ if (intopt.kind == ODK_REGINFO)
+ {
+ Elf32_RegInfo intreg;
+
+ bfd_mips_elf32_swap_reginfo_in
+ (abfd,
+ ((Elf32_External_RegInfo *)
+ (l + sizeof (Elf_External_Options))),
+ &intreg);
+ elf_gp (abfd) = intreg.ri_gp_value;
+ }
+ l += intopt.size;
+ }
+ free (contents);
+ }
+
return true;
}
/* Set the correct type for a MIPS ELF section. We do this by the
- section name, which is a hack, but ought to work. */
+ section name, which is a hack, but ought to work. This routine is
+ used by both the 32-bit and the 64-bit ABI. */
-static boolean
-mips_elf_fake_sections (abfd, hdr, sec)
+boolean
+_bfd_mips_elf_fake_sections (abfd, hdr, sec)
bfd *abfd;
Elf32_Internal_Shdr *hdr;
asection *sec;
{
hdr->sh_type = SHT_MIPS_LIBLIST;
hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
- /* FIXME: Set the sh_link field. */
+ /* The sh_link field is set in final_write_processing. */
+ }
+ else if (strcmp (name, ".msym") == 0)
+ {
+ hdr->sh_type = SHT_MIPS_MSYM;
+ hdr->sh_entsize = 8;
+ /* FIXME: Set the sh_info field. */
}
else if (strcmp (name, ".conflict") == 0)
hdr->sh_type = SHT_MIPS_CONFLICT;
{
hdr->sh_type = SHT_MIPS_GPTAB;
hdr->sh_entsize = sizeof (Elf32_External_gptab);
- /* The sh_info field is set in mips_elf_final_write_processing. */
+ /* The sh_info field is set in final_write_processing. */
}
else if (strcmp (name, ".ucode") == 0)
hdr->sh_type = SHT_MIPS_UCODE;
else if (strcmp (name, ".mdebug") == 0)
{
hdr->sh_type = SHT_MIPS_DEBUG;
- hdr->sh_entsize = 1;
+ /* In a shared object on Irix 5.3, the .mdebug section has an
+ entsize of 0. FIXME: Does this matter? */
+ if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
+ hdr->sh_entsize = 0;
+ else
+ hdr->sh_entsize = 1;
}
else if (strcmp (name, ".reginfo") == 0)
{
hdr->sh_type = SHT_MIPS_REGINFO;
- hdr->sh_entsize = 1;
+ /* In a shared object on Irix 5.3, the .reginfo section has an
+ entsize of 0x18. FIXME: Does this matter? */
+ if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
+ hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
+ else
+ hdr->sh_entsize = 1;
/* Force the section size to the correct value, even if the
linker thinks it is larger. The link routine below will only
write out this much data for .reginfo. */
hdr->sh_size = sec->_raw_size = sizeof (Elf32_External_RegInfo);
}
- else if (strcmp (name, ".options") == 0)
+ else if (SGI_COMPAT (abfd)
+ && (strcmp (name, ".hash") == 0
+ || strcmp (name, ".dynamic") == 0
+ || strcmp (name, ".dynstr") == 0))
+ {
+ hdr->sh_entsize = 0;
+ hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
+ }
+ else if (strcmp (name, ".got") == 0
+ || strcmp (name, ".sdata") == 0
+ || strcmp (name, ".sbss") == 0
+ || strcmp (name, ".lit4") == 0
+ || strcmp (name, ".lit8") == 0)
+ hdr->sh_flags |= SHF_MIPS_GPREL;
+ else if (strcmp (name, ".MIPS.interfaces") == 0)
+ {
+ hdr->sh_type = SHT_MIPS_IFACE;
+ hdr->sh_flags |= SHF_MIPS_NOSTRIP;
+ }
+ else if (strcmp (name, ".MIPS.content") == 0)
+ {
+ hdr->sh_type = SHT_MIPS_CONTENT;
+ /* The sh_info field is set in final_write_processing. */
+ }
+ else if (strcmp (name, ".options") == 0
+ || strcmp (name, ".MIPS.options") == 0)
{
hdr->sh_type = SHT_MIPS_OPTIONS;
hdr->sh_entsize = 1;
+ hdr->sh_flags |= SHF_MIPS_NOSTRIP;
+ }
+ else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0)
+ hdr->sh_type = SHT_MIPS_DWARF;
+ else if (strcmp (name, ".MIPS.symlib") == 0)
+ {
+ hdr->sh_type = SHT_MIPS_SYMBOL_LIB;
+ /* The sh_link and sh_info fields are set in
+ final_write_processing. */
+ }
+ else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0
+ || strncmp (name, ".MIPS.post_rel",
+ sizeof ".MIPS.post_rel" - 1) == 0)
+ {
+ hdr->sh_type = SHT_MIPS_EVENTS;
+ hdr->sh_flags |= SHF_MIPS_NOSTRIP;
+ /* The sh_link field is set in final_write_processing. */
}
return true;
}
/* Given a BFD section, try to locate the corresponding ELF section
- index. */
+ index. This is used by both the 32-bit and the 64-bit ABI.
+ Actually, it's not clear to me that the 64-bit ABI supports these,
+ but for non-PIC objects we will certainly want support for at least
+ the .scommon section. */
-static boolean
-mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
+boolean
+_bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
bfd *abfd;
Elf32_Internal_Shdr *hdr;
asection *sec;
*retval = SHN_MIPS_SCOMMON;
return true;
}
- if ((asection *) hdr->rawdata == sec)
- return true;
+ if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0)
+ {
+ *retval = SHN_MIPS_ACOMMON;
+ return true;
+ }
return false;
}
-/* Work over a section just before writing it out. We update the GP
- value in the .reginfo section based on the value we are using.
- FIXME: We recognize sections that need the SHF_MIPS_GPREL flag by
- name; there has to be a better way. */
+/* When are writing out the .options or .MIPS.options section,
+ remember the bytes we are writing out, so that we can install the
+ GP value in the section_processing routine. */
-static boolean
-mips_elf_section_processing (abfd, hdr)
+boolean
+_bfd_mips_elf_set_section_contents (abfd, section, location, offset, count)
bfd *abfd;
- Elf32_Internal_Shdr *hdr;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
{
- if (hdr->sh_type == SHT_MIPS_REGINFO)
+ if (strcmp (section->name, ".options") == 0
+ || strcmp (section->name, ".MIPS.options") == 0)
{
- bfd_byte buf[4];
+ bfd_byte *c;
- BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
- BFD_ASSERT (hdr->contents == NULL);
+ if (elf_section_data (section) == NULL)
+ {
+ section->used_by_bfd =
+ (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
+ if (elf_section_data (section) == NULL)
+ return false;
+ }
+ c = (bfd_byte *) elf_section_data (section)->tdata;
+ if (c == NULL)
+ {
+ bfd_size_type size;
- if (bfd_seek (abfd,
- hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
- SEEK_SET) == -1)
- return false;
- bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf);
- if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4)
- return false;
+ if (section->_cooked_size != 0)
+ size = section->_cooked_size;
+ else
+ size = section->_raw_size;
+ c = (bfd_byte *) bfd_zalloc (abfd, size);
+ if (c == NULL)
+ return false;
+ elf_section_data (section)->tdata = (PTR) c;
+ }
+
+ memcpy (c + offset, location, count);
}
- if (hdr->rawdata != NULL)
+ return _bfd_elf_set_section_contents (abfd, section, location, offset,
+ count);
+}
+
+/* Work over a section just before writing it out. This routine is
+ used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
+ sections that need the SHF_MIPS_GPREL flag by name; there has to be
+ a better way. */
+
+boolean
+_bfd_mips_elf_section_processing (abfd, hdr)
+ bfd *abfd;
+ Elf_Internal_Shdr *hdr;
+{
+ if (hdr->bfd_section != NULL)
{
- const char *name = ((asection *) hdr->rawdata)->name;
+ const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
if (strcmp (name, ".sdata") == 0)
{
hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
hdr->sh_type = SHT_PROGBITS;
}
+ else if (strcmp (name, ".compact_rel") == 0)
+ {
+ hdr->sh_flags = 0;
+ hdr->sh_type = SHT_PROGBITS;
+ }
+ else if (strcmp (name, ".rtproc") == 0)
+ {
+ if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
+ {
+ unsigned int adjust;
+
+ adjust = hdr->sh_size % hdr->sh_addralign;
+ if (adjust != 0)
+ hdr->sh_size += hdr->sh_addralign - adjust;
+ }
+ }
}
return true;
}
-\f
-/* MIPS ELF uses two common sections. One is the usual one, and the
- other is for small objects. All the small objects are kept
+
+/* Work over a section just before writing it out. We update the GP
+ value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based
+ on the value we are using. */
+
+static boolean
+mips_elf32_section_processing (abfd, hdr)
+ bfd *abfd;
+ Elf32_Internal_Shdr *hdr;
+{
+ if (hdr->sh_type == SHT_MIPS_REGINFO)
+ {
+ bfd_byte buf[4];
+
+ BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo));
+ BFD_ASSERT (hdr->contents == NULL);
+
+ if (bfd_seek (abfd,
+ hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4,
+ SEEK_SET) == -1)
+ return false;
+ bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf);
+ if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4)
+ return false;
+ }
+
+ if (hdr->sh_type == SHT_MIPS_OPTIONS
+ && hdr->bfd_section != NULL
+ && elf_section_data (hdr->bfd_section) != NULL
+ && elf_section_data (hdr->bfd_section)->tdata != NULL)
+ {
+ bfd_byte *contents, *l, *lend;
+
+ /* We stored the section contents in the elf_section_data tdata
+ field in the set_section_contents routine. We save the
+ section contents so that we don't have to read them again.
+ At this point we know that elf_gp is set, so we can look
+ through the section contents to see if there is an
+ ODK_REGINFO structure. */
+
+ contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata;
+ l = contents;
+ lend = contents + hdr->sh_size;
+ while (l + sizeof (Elf_External_Options) <= lend)
+ {
+ Elf_Internal_Options intopt;
+
+ bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
+ &intopt);
+ if (intopt.kind == ODK_REGINFO)
+ {
+ bfd_byte buf[4];
+
+ if (bfd_seek (abfd,
+ (hdr->sh_offset
+ + (l - contents)
+ + sizeof (Elf_External_Options)
+ + (sizeof (Elf32_External_RegInfo) - 4)),
+ SEEK_SET) == -1)
+ return false;
+ bfd_h_put_32 (abfd, elf_gp (abfd), buf);
+ if (bfd_write (buf, 1, 4, abfd) != 4)
+ return false;
+ }
+ l += intopt.size;
+ }
+ }
+
+ return _bfd_mips_elf_section_processing (abfd, hdr);
+}
+\f
+/* MIPS ELF uses two common sections. One is the usual one, and the
+ other is for small objects. All the small objects are kept
together, and then referenced via the gp pointer, which yields
faster assembler code. This is what we use for the small common
section. This approach is copied from ecoff.c. */
static asymbol *mips_elf_scom_symbol_ptr;
/* MIPS ELF also uses an acommon section, which represents an
- allocated common symbol which may be overridden by a
+ allocated common symbol which may be overridden by a
definition in a shared library. */
static asection mips_elf_acom_section;
static asymbol mips_elf_acom_symbol;
static asymbol *mips_elf_acom_symbol_ptr;
-/* Handle the special MIPS section numbers that a symbol may use. */
+/* The Irix 5 support uses two virtual sections, which represent
+ text/data symbols defined in dynamic objects. */
+static asection mips_elf_text_section;
+static asection *mips_elf_text_section_ptr;
+static asymbol mips_elf_text_symbol;
+static asymbol *mips_elf_text_symbol_ptr;
-static void
-mips_elf_symbol_processing (abfd, asym)
+static asection mips_elf_data_section;
+static asection *mips_elf_data_section_ptr;
+static asymbol mips_elf_data_symbol;
+static asymbol *mips_elf_data_symbol_ptr;
+
+/* Handle the special MIPS section numbers that a symbol may use.
+ This is used for both the 32-bit and the 64-bit ABI. */
+
+void
+_bfd_mips_elf_symbol_processing (abfd, asym)
bfd *abfd;
asymbol *asym;
{
{
/* Initialize the acommon section. */
mips_elf_acom_section.name = ".acommon";
- mips_elf_acom_section.flags = SEC_NO_FLAGS;
+ mips_elf_acom_section.flags = SEC_ALLOC;
mips_elf_acom_section.output_section = &mips_elf_acom_section;
mips_elf_acom_section.symbol = &mips_elf_acom_symbol;
mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr;
break;
case SHN_MIPS_SUNDEFINED:
- asym->section = &bfd_und_section;
+ asym->section = bfd_und_section_ptr;
+ break;
+
+#if 0 /* for SGI_COMPAT */
+ case SHN_MIPS_TEXT:
+ asym->section = mips_elf_text_section_ptr;
+ break;
+
+ case SHN_MIPS_DATA:
+ asym->section = mips_elf_data_section_ptr;
+ break;
+#endif
+ }
+}
+\f
+/* When creating an Irix 5 executable, we need REGINFO and RTPROC
+ segments. */
+
+static int
+mips_elf_additional_program_headers (abfd)
+ bfd *abfd;
+{
+ asection *s;
+ int ret;
+
+ ret = 0;
+
+ if (! SGI_COMPAT (abfd))
+ return ret;
+
+ s = bfd_get_section_by_name (abfd, ".reginfo");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ /* We need a PT_MIPS_REGINFO segment. */
+ ++ret;
+ }
+
+ if (bfd_get_section_by_name (abfd, ".dynamic") != NULL
+ && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
+ {
+ /* We need a PT_MIPS_RTPROC segment. */
+ ++ret;
+ }
+
+ return ret;
+}
+
+/* Modify the segment map for an Irix 5 executable. */
+
+static boolean
+mips_elf_modify_segment_map (abfd)
+ bfd *abfd;
+{
+ asection *s;
+ struct elf_segment_map *m, **pm;
+
+ if (! SGI_COMPAT (abfd))
+ return true;
+
+ /* If there is a .reginfo section, we need a PT_MIPS_REGINFO
+ segment. */
+ s = bfd_get_section_by_name (abfd, ".reginfo");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ if (m->p_type == PT_MIPS_REGINFO)
+ break;
+ if (m == NULL)
+ {
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
+ if (m == NULL)
+ return false;
+
+ m->p_type = PT_MIPS_REGINFO;
+ m->count = 1;
+ m->sections[0] = s;
+
+ /* We want to put it after the PHDR and INTERP segments. */
+ pm = &elf_tdata (abfd)->segment_map;
+ while (*pm != NULL
+ && ((*pm)->p_type == PT_PHDR
+ || (*pm)->p_type == PT_INTERP))
+ pm = &(*pm)->next;
+
+ m->next = *pm;
+ *pm = m;
+ }
+ }
+
+ /* If there are .dynamic and .mdebug sections, we make a room for
+ the RTPROC header. FIXME: Rewrite without section names. */
+ if (bfd_get_section_by_name (abfd, ".interp") == NULL
+ && bfd_get_section_by_name (abfd, ".dynamic") != NULL
+ && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
+ {
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ if (m->p_type == PT_MIPS_RTPROC)
+ break;
+ if (m == NULL)
+ {
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
+ if (m == NULL)
+ return false;
+
+ m->p_type = PT_MIPS_RTPROC;
+
+ s = bfd_get_section_by_name (abfd, ".rtproc");
+ if (s == NULL)
+ {
+ m->count = 0;
+ m->p_flags = 0;
+ m->p_flags_valid = 1;
+ }
+ else
+ {
+ m->count = 1;
+ m->sections[0] = s;
+ }
+
+ /* We want to put it after the DYNAMIC segment. */
+ pm = &elf_tdata (abfd)->segment_map;
+ while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
+ pm = &(*pm)->next;
+ if (*pm != NULL)
+ pm = &(*pm)->next;
+
+ m->next = *pm;
+ *pm = m;
+ }
+ }
+
+ /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr,
+ .dynsym, and .hash sections, and everything in between. */
+ for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
+ if ((*pm)->p_type == PT_DYNAMIC)
break;
+ m = *pm;
+ if (m != NULL
+ && m->count == 1
+ && strcmp (m->sections[0]->name, ".dynamic") == 0)
+ {
+ static const char *sec_names[] =
+ { ".dynamic", ".dynstr", ".dynsym", ".hash" };
+ bfd_vma low, high;
+ unsigned int i, c;
+ struct elf_segment_map *n;
+
+ low = 0xffffffff;
+ high = 0;
+ for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
+ {
+ s = bfd_get_section_by_name (abfd, sec_names[i]);
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ bfd_size_type sz;
+
+ if (low > s->vma)
+ low = s->vma;
+ sz = s->_cooked_size;
+ if (sz == 0)
+ sz = s->_raw_size;
+ if (high < s->vma + sz)
+ high = s->vma + sz;
+ }
+ }
+
+ c = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if ((s->flags & SEC_LOAD) != 0
+ && s->vma >= low
+ && ((s->vma
+ + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
+ <= high))
+ ++c;
+
+ n = ((struct elf_segment_map *)
+ bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *)));
+ if (n == NULL)
+ return false;
+ *n = *m;
+ n->count = c;
+
+ i = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LOAD) != 0
+ && s->vma >= low
+ && ((s->vma
+ + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
+ <= high))
+ {
+ n->sections[i] = s;
+ ++i;
+ }
+ }
+
+ *pm = n;
}
+
+ return true;
+}
+\f
+/* The structure of the runtime procedure descriptor created by the
+ loader for use by the static exception system. */
+
+typedef struct runtime_pdr {
+ bfd_vma adr; /* memory address of start of procedure */
+ long regmask; /* save register mask */
+ long regoffset; /* save register offset */
+ long fregmask; /* save floating point register mask */
+ long fregoffset; /* save floating point register offset */
+ long frameoffset; /* frame size */
+ short framereg; /* frame pointer register */
+ short pcreg; /* offset or reg of return pc */
+ long irpss; /* index into the runtime string table */
+ long reserved;
+ struct exception_info *exception_info;/* pointer to exception array */
+} RPDR, *pRPDR;
+#define cbRPDR sizeof(RPDR)
+#define rpdNil ((pRPDR) 0)
+
+/* Swap RPDR (runtime procedure table entry) for output. */
+
+static void ecoff_swap_rpdr_out
+ PARAMS ((bfd *, const RPDR *, struct rpdr_ext *));
+
+static void
+ecoff_swap_rpdr_out (abfd, in, ex)
+ bfd *abfd;
+ const RPDR *in;
+ struct rpdr_ext *ex;
+{
+ /* ecoff_put_off was defined in ecoffswap.h. */
+ ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr);
+ bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask);
+ bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset);
+ bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask);
+ bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset);
+ bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset);
+
+ bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg);
+ bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg);
+
+ bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss);
+#if 0 /* FIXME */
+ ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info);
+#endif
}
\f
/* Read ECOFF debugging information from a .mdebug section into a
ecoff_debug_info structure. */
-static boolean
-mips_elf_read_ecoff_info (abfd, section, debug)
+boolean
+_bfd_mips_elf_read_ecoff_info (abfd, section, debug)
bfd *abfd;
asection *section;
struct ecoff_debug_info *debug;
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
- ext_hdr = (char *) malloc (swap->external_hdr_size);
+ ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
if (ext_hdr == NULL && swap->external_hdr_size != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
swap->external_hdr_size)
debug->ptr = NULL; \
else \
{ \
- debug->ptr = (type) malloc (size * symhdr->count); \
+ debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \
if (debug->ptr == NULL) \
- { \
- bfd_set_error (bfd_error_no_memory); \
- goto error_return; \
- } \
+ goto error_return; \
if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
|| (bfd_read (debug->ptr, size, symhdr->count, \
abfd) != size * symhdr->count)) \
free (debug->external_ext);
return false;
}
+\f
+/* MIPS ELF local labels start with '$', not 'L'. */
+
+/*ARGSUSED*/
+static boolean
+mips_elf_is_local_label_name (abfd, name)
+ bfd *abfd;
+ const char *name;
+{
+ if (name[0] == '$')
+ return true;
+
+ /* On Irix 6, the labels go back to starting with '.', so we accept
+ the generic ELF local label syntax as well. */
+ return _bfd_elf_is_local_label_name (abfd, name);
+}
+
+/* MIPS ELF uses a special find_nearest_line routine in order the
+ handle the ECOFF debugging information. */
+
+struct mips_elf_find_line
+{
+ struct ecoff_debug_info d;
+ struct ecoff_find_line i;
+};
+
+boolean
+_bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
+ functionname_ptr, line_ptr)
+ bfd *abfd;
+ asection *section;
+ asymbol **symbols;
+ bfd_vma offset;
+ const char **filename_ptr;
+ const char **functionname_ptr;
+ unsigned int *line_ptr;
+{
+ asection *msec;
+
+ if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr))
+ return true;
+
+ msec = bfd_get_section_by_name (abfd, ".mdebug");
+ if (msec != NULL)
+ {
+ flagword origflags;
+ struct mips_elf_find_line *fi;
+ const struct ecoff_debug_swap * const swap =
+ get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
+
+ /* If we are called during a link, mips_elf_final_link may have
+ cleared the SEC_HAS_CONTENTS field. We force it back on here
+ if appropriate (which it normally will be). */
+ origflags = msec->flags;
+ if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
+ msec->flags |= SEC_HAS_CONTENTS;
+
+ fi = elf_tdata (abfd)->find_line_info;
+ if (fi == NULL)
+ {
+ bfd_size_type external_fdr_size;
+ char *fraw_src;
+ char *fraw_end;
+ struct fdr *fdr_ptr;
+
+ fi = ((struct mips_elf_find_line *)
+ bfd_zalloc (abfd, sizeof (struct mips_elf_find_line)));
+ if (fi == NULL)
+ {
+ msec->flags = origflags;
+ return false;
+ }
+
+ if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d))
+ {
+ msec->flags = origflags;
+ return false;
+ }
+
+ /* Swap in the FDR information. */
+ fi->d.fdr = ((struct fdr *)
+ bfd_alloc (abfd,
+ (fi->d.symbolic_header.ifdMax *
+ sizeof (struct fdr))));
+ if (fi->d.fdr == NULL)
+ {
+ msec->flags = origflags;
+ return false;
+ }
+ external_fdr_size = swap->external_fdr_size;
+ fdr_ptr = fi->d.fdr;
+ fraw_src = (char *) fi->d.external_fdr;
+ fraw_end = (fraw_src
+ + fi->d.symbolic_header.ifdMax * external_fdr_size);
+ for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
+ (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
+
+ elf_tdata (abfd)->find_line_info = fi;
+
+ /* Note that we don't bother to ever free this information.
+ find_nearest_line is either called all the time, as in
+ objdump -l, so the information should be saved, or it is
+ rarely called, as in ld error messages, so the memory
+ wasted is unimportant. Still, it would probably be a
+ good idea for free_cached_info to throw it away. */
+ }
+
+ if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
+ &fi->i, filename_ptr, functionname_ptr,
+ line_ptr))
+ {
+ msec->flags = origflags;
+ return true;
+ }
+
+ msec->flags = origflags;
+ }
+
+ /* Fall back on the generic ELF find_nearest_line routine. */
+
+ return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr);
+}
+\f
+ /* The mips16 compiler uses a couple of special sections to handle
+ floating point arguments.
+
+ Section names that look like .mips16.fn.FNNAME contain stubs that
+ copy floating point arguments from the fp regs to the gp regs and
+ then jump to FNNAME. If any 32 bit function calls FNNAME, the
+ call should be redirected to the stub instead. If no 32 bit
+ function calls FNNAME, the stub should be discarded. We need to
+ consider any reference to the function, not just a call, because
+ if the address of the function is taken we will need the stub,
+ since the address might be passed to a 32 bit function.
+
+ Section names that look like .mips16.call.FNNAME contain stubs
+ that copy floating point arguments from the gp regs to the fp
+ regs and then jump to FNNAME. If FNNAME is a 32 bit function,
+ then any 16 bit function that calls FNNAME should be redirected
+ to the stub instead. If FNNAME is not a 32 bit function, the
+ stub should be discarded.
+
+ .mips16.call.fp.FNNAME sections are similar, but contain stubs
+ which call FNNAME and then copy the return value from the fp regs
+ to the gp regs. These stubs store the return value in $18 while
+ calling FNNAME; any function which might call one of these stubs
+ must arrange to save $18 around the call. (This case is not
+ needed for 32 bit functions that call 16 bit functions, because
+ 16 bit functions always return floating point values in both
+ $f0/$f1 and $2/$3.)
+
+ Note that in all cases FNNAME might be defined statically.
+ Therefore, FNNAME is not used literally. Instead, the relocation
+ information will indicate which symbol the section is for.
+
+ We record any stubs that we find in the symbol table. */
+
+#define FN_STUB ".mips16.fn."
+#define CALL_STUB ".mips16.call."
+#define CALL_FP_STUB ".mips16.call.fp."
/* The MIPS ELF linker needs additional information for each symbol in
the global hash table. */
/* External symbol information. */
EXTR esym;
+
+ /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */
+ unsigned int mips_32_relocs;
+
+ /* If there is a stub that 32 bit functions should use to call this
+ 16 bit function, this points to the section containing the stub. */
+ asection *fn_stub;
+
+ /* Whether we need the fn_stub; this is set if this symbol appears
+ in any relocs other than a 16 bit call. */
+ boolean need_fn_stub;
+
+ /* If there is a stub that 16 bit functions should use to call this
+ 32 bit function, this points to the section containing the stub. */
+ asection *call_stub;
+
+ /* This is like the call_stub field, but it is used if the function
+ being called returns a floating point value. */
+ asection *call_fp_stub;
};
/* MIPS ELF linker hash table. */
struct mips_elf_link_hash_table
{
struct elf_link_hash_table root;
+ /* String section indices for the dynamic section symbols. */
+ bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES];
+ /* The number of .rtproc entries. */
+ bfd_size_type procedure_count;
+ /* The size of the .compact_rel section (if SGI_COMPAT). */
+ bfd_size_type compact_rel_size;
+ /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
+ entry is set to the address of __rld_obj_head as in Irix 5. */
+ boolean use_rld_obj_head;
+ /* This is the value of the __rld_map or __rld_obj_head symbol. */
+ bfd_vma rld_value;
+ /* This is set if we see any mips16 stub sections. */
+ boolean mips16_stubs_seen;
};
/* Look up an entry in a MIPS ELF linker hash table. */
bfd_hash_allocate (table,
sizeof (struct mips_elf_link_hash_entry)));
if (ret == (struct mips_elf_link_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_hash_entry *) ret;
- }
+ return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct mips_elf_link_hash_entry *)
/* We use -2 as a marker to indicate that the information has
not been set. -1 means there is no associated ifd. */
ret->esym.ifd = -2;
+ ret->mips_32_relocs = 0;
+ ret->fn_stub = NULL;
+ ret->need_fn_stub = false;
+ ret->call_stub = NULL;
+ ret->call_fp_stub = NULL;
}
return (struct bfd_hash_entry *) ret;
bfd *abfd;
{
struct mips_elf_link_hash_table *ret;
+ unsigned int i;
ret = ((struct mips_elf_link_hash_table *)
bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table)));
if (ret == (struct mips_elf_link_hash_table *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
+ return NULL;
if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
mips_elf_link_hash_newfunc))
return NULL;
}
+ for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++)
+ ret->dynsym_sec_strindex[i] = (bfd_size_type) -1;
+ ret->procedure_count = 0;
+ ret->compact_rel_size = 0;
+ ret->use_rld_obj_head = false;
+ ret->rld_value = 0;
+ ret->mips16_stubs_seen = false;
+
return &ret->root.root;
}
asection **secp;
bfd_vma *valp;
{
+ if (SGI_COMPAT (abfd)
+ && (abfd->flags & DYNAMIC) != 0
+ && strcmp (*namep, "_rld_new_interface") == 0)
+ {
+ /* Skip Irix 5 rld entry name. */
+ *namep = NULL;
+ return true;
+ }
+
switch (sym->st_shndx)
{
case SHN_COMMON:
*valp = sym->st_size;
break;
+ case SHN_MIPS_TEXT:
+ /* This section is used in a shared object. */
+ if (mips_elf_text_section_ptr == NULL)
+ {
+ /* Initialize the section. */
+ mips_elf_text_section.name = ".text";
+ mips_elf_text_section.flags = SEC_NO_FLAGS;
+ mips_elf_text_section.output_section = NULL;
+ mips_elf_text_section.symbol = &mips_elf_text_symbol;
+ mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr;
+ mips_elf_text_symbol.name = ".text";
+ mips_elf_text_symbol.flags = BSF_SECTION_SYM;
+ mips_elf_text_symbol.section = &mips_elf_text_section;
+ mips_elf_text_symbol_ptr = &mips_elf_text_symbol;
+ mips_elf_text_section_ptr = &mips_elf_text_section;
+ }
+ /* This code used to do *secp = bfd_und_section_ptr if
+ info->shared. I don't know why, and that doesn't make sense,
+ so I took it out. */
+ *secp = mips_elf_text_section_ptr;
+ break;
+
+ case SHN_MIPS_ACOMMON:
+ /* Fall through. XXX Can we treat this as allocated data? */
+ case SHN_MIPS_DATA:
+ /* This section is used in a shared object. */
+ if (mips_elf_data_section_ptr == NULL)
+ {
+ /* Initialize the section. */
+ mips_elf_data_section.name = ".data";
+ mips_elf_data_section.flags = SEC_NO_FLAGS;
+ mips_elf_data_section.output_section = NULL;
+ mips_elf_data_section.symbol = &mips_elf_data_symbol;
+ mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr;
+ mips_elf_data_symbol.name = ".data";
+ mips_elf_data_symbol.flags = BSF_SECTION_SYM;
+ mips_elf_data_symbol.section = &mips_elf_data_section;
+ mips_elf_data_symbol_ptr = &mips_elf_data_symbol;
+ mips_elf_data_section_ptr = &mips_elf_data_section;
+ }
+ /* This code used to do *secp = bfd_und_section_ptr if
+ info->shared. I don't know why, and that doesn't make sense,
+ so I took it out. */
+ *secp = mips_elf_data_section_ptr;
+ break;
+
case SHN_MIPS_SUNDEFINED:
- *secp = &bfd_und_section;
+ *secp = bfd_und_section_ptr;
break;
}
+ if (SGI_COMPAT (abfd)
+ && ! info->shared
+ && info->hash->creator == abfd->xvec
+ && strcmp (*namep, "__rld_obj_head") == 0)
+ {
+ struct elf_link_hash_entry *h;
+
+ /* Mark __rld_obj_head as dynamic. */
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, *namep, BSF_GLOBAL, *secp,
+ (bfd_vma) *valp, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_OBJECT;
+
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+
+ mips_elf_hash_table (info)->use_rld_obj_head = true;
+ }
+
+ /* If this is a mips16 text symbol, add 1 to the value to make it
+ odd. This will cause something like .word SYM to come up with
+ the right value when it is loaded into the PC. */
+ if (sym->st_other == STO_MIPS16)
+ ++*valp;
+
return true;
}
{
struct extsym_info *einfo = (struct extsym_info *) data;
boolean strip;
+ asection *sec, *output_section;
if (h->root.indx == -2)
strip = false;
h->esym.asym.value = 0;
h->esym.asym.st = stGlobal;
- if (h->root.root.type != bfd_link_hash_defined)
+ if (SGI_COMPAT (einfo->abfd)
+ && (h->root.root.type == bfd_link_hash_undefined
+ || h->root.root.type == bfd_link_hash_undefweak))
+ {
+ const char *name;
+
+ /* Use undefined class. Also, set class and type for some
+ special symbols. */
+ name = h->root.root.root.string;
+ if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
+ || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
+ {
+ h->esym.asym.sc = scData;
+ h->esym.asym.st = stLabel;
+ h->esym.asym.value = 0;
+ }
+ else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
+ {
+ h->esym.asym.sc = scAbs;
+ h->esym.asym.st = stLabel;
+ h->esym.asym.value =
+ mips_elf_hash_table (einfo->info)->procedure_count;
+ }
+ else if (strcmp (name, "_gp_disp") == 0)
+ {
+ h->esym.asym.sc = scAbs;
+ h->esym.asym.st = stLabel;
+ h->esym.asym.value = elf_gp (einfo->abfd);
+ }
+ else
+ h->esym.asym.sc = scUndefined;
+ }
+ else if (h->root.root.type != bfd_link_hash_defined
+ && h->root.root.type != bfd_link_hash_defweak)
h->esym.asym.sc = scAbs;
else
{
- asection *output_section;
const char *name;
- output_section = h->root.root.u.def.section->output_section;
- name = bfd_section_name (output_section->owner, output_section);
-
- if (strcmp (name, ".text") == 0)
- h->esym.asym.sc = scText;
- else if (strcmp (name, ".data") == 0)
- h->esym.asym.sc = scData;
- else if (strcmp (name, ".sdata") == 0)
- h->esym.asym.sc = scSData;
- else if (strcmp (name, ".rodata") == 0
- || strcmp (name, ".rdata") == 0)
- h->esym.asym.sc = scRData;
- else if (strcmp (name, ".bss") == 0)
- h->esym.asym.sc = scBss;
- else if (strcmp (name, ".sbss") == 0)
- h->esym.asym.sc = scSBss;
- else if (strcmp (name, ".init") == 0)
- h->esym.asym.sc = scInit;
- else if (strcmp (name, ".fini") == 0)
- h->esym.asym.sc = scFini;
+ sec = h->root.root.u.def.section;
+ output_section = sec->output_section;
+
+ /* When making a shared library and symbol h is the one from
+ the another shared library, OUTPUT_SECTION may be null. */
+ if (output_section == NULL)
+ h->esym.asym.sc = scUndefined;
else
- h->esym.asym.sc = scAbs;
+ {
+ name = bfd_section_name (output_section->owner, output_section);
+
+ if (strcmp (name, ".text") == 0)
+ h->esym.asym.sc = scText;
+ else if (strcmp (name, ".data") == 0)
+ h->esym.asym.sc = scData;
+ else if (strcmp (name, ".sdata") == 0)
+ h->esym.asym.sc = scSData;
+ else if (strcmp (name, ".rodata") == 0
+ || strcmp (name, ".rdata") == 0)
+ h->esym.asym.sc = scRData;
+ else if (strcmp (name, ".bss") == 0)
+ h->esym.asym.sc = scBss;
+ else if (strcmp (name, ".sbss") == 0)
+ h->esym.asym.sc = scSBss;
+ else if (strcmp (name, ".init") == 0)
+ h->esym.asym.sc = scInit;
+ else if (strcmp (name, ".fini") == 0)
+ h->esym.asym.sc = scFini;
+ else
+ h->esym.asym.sc = scAbs;
+ }
}
h->esym.asym.reserved = 0;
h->esym.asym.index = indexNil;
}
+ if (h->root.root.type == bfd_link_hash_common)
+ h->esym.asym.value = h->root.root.u.c.size;
+ else if (h->root.root.type == bfd_link_hash_defined
+ || h->root.root.type == bfd_link_hash_defweak)
+ {
+ if (h->esym.asym.sc == scCommon)
+ h->esym.asym.sc = scBss;
+ else if (h->esym.asym.sc == scSCommon)
+ h->esym.asym.sc = scSBss;
+
+ sec = h->root.root.u.def.section;
+ output_section = sec->output_section;
+ if (output_section != NULL)
+ h->esym.asym.value = (h->root.root.u.def.value
+ + sec->output_offset
+ + output_section->vma);
+ else
+ h->esym.asym.value = 0;
+ }
+ else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ {
+ /* Set type and value for a symbol with a function stub. */
+ h->esym.asym.st = stProc;
+ sec = h->root.root.u.def.section;
+ if (sec == NULL)
+ h->esym.asym.value = 0;
+ else
+ {
+ output_section = sec->output_section;
+ if (output_section != NULL)
+ h->esym.asym.value = (h->root.plt_offset
+ + sec->output_offset
+ + output_section->vma);
+ else
+ h->esym.asym.value = 0;
+ }
+#if 0 /* FIXME? */
+ h->esym.ifd = 0;
+#endif
+ }
if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
h->root.root.root.string,
return true;
}
-/* A comparison routine used to sort .gptab entries. */
-
-static int
-gptab_compare (p1, p2)
- const PTR p1;
- const PTR p2;
-{
- const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
- const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
-
- return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
-}
-
-/* We need to use a special link routine to handle the .reginfo and
- the .mdebug sections. We need to merge all instances of these
- sections together, not write them all out sequentially. */
+/* Create a runtime procedure table from the .mdebug section. */
static boolean
-mips_elf_final_link (abfd, info)
+mips_elf_create_procedure_table (handle, abfd, info, s, debug)
+ PTR handle;
bfd *abfd;
struct bfd_link_info *info;
+ asection *s;
+ struct ecoff_debug_info *debug;
{
- asection **secpp;
- asection *o;
- struct bfd_link_order *p;
- asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
- Elf32_RegInfo reginfo;
- struct ecoff_debug_info debug;
- const struct ecoff_debug_swap *swap
- = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
- HDRR *symhdr = &debug.symbolic_header;
- PTR mdebug_handle = NULL;
+ const struct ecoff_debug_swap *swap;
+ HDRR *hdr = &debug->symbolic_header;
+ RPDR *rpdr, *rp;
+ struct rpdr_ext *erp;
+ PTR rtproc;
+ struct pdr_ext *epdr;
+ struct sym_ext *esym;
+ char *ss, **sv;
+ char *str;
+ unsigned long size, count;
+ unsigned long sindex;
+ unsigned long i;
+ PDR pdr;
+ SYMR sym;
+ const char *no_name_func = "static procedure (no name)";
+
+ epdr = NULL;
+ rpdr = NULL;
+ esym = NULL;
+ ss = NULL;
+ sv = NULL;
+
+ swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
+
+ sindex = strlen (no_name_func) + 1;
+ count = hdr->ipdMax;
+ if (count > 0)
+ {
+ size = swap->external_pdr_size;
+
+ epdr = (struct pdr_ext *) bfd_malloc (size * count);
+ if (epdr == NULL)
+ goto error_return;
+
+ if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr))
+ goto error_return;
+
+ size = sizeof (RPDR);
+ rp = rpdr = (RPDR *) bfd_malloc (size * count);
+ if (rpdr == NULL)
+ goto error_return;
+
+ sv = (char **) bfd_malloc (sizeof (char *) * count);
+ if (sv == NULL)
+ goto error_return;
+
+ count = hdr->isymMax;
+ size = swap->external_sym_size;
+ esym = (struct sym_ext *) bfd_malloc (size * count);
+ if (esym == NULL)
+ goto error_return;
+
+ if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym))
+ goto error_return;
+
+ count = hdr->issMax;
+ ss = (char *) bfd_malloc (count);
+ if (ss == NULL)
+ goto error_return;
+ if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss))
+ goto error_return;
+
+ count = hdr->ipdMax;
+ for (i = 0; i < count; i++, rp++)
+ {
+ (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr);
+ (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym);
+ rp->adr = sym.value;
+ rp->regmask = pdr.regmask;
+ rp->regoffset = pdr.regoffset;
+ rp->fregmask = pdr.fregmask;
+ rp->fregoffset = pdr.fregoffset;
+ rp->frameoffset = pdr.frameoffset;
+ rp->framereg = pdr.framereg;
+ rp->pcreg = pdr.pcreg;
+ rp->irpss = sindex;
+ sv[i] = ss + sym.iss;
+ sindex += strlen (sv[i]) + 1;
+ }
+ }
+
+ size = sizeof (struct rpdr_ext) * (count + 2) + sindex;
+ size = BFD_ALIGN (size, 16);
+ rtproc = (PTR) bfd_alloc (abfd, size);
+ if (rtproc == NULL)
+ {
+ mips_elf_hash_table (info)->procedure_count = 0;
+ goto error_return;
+ }
+
+ mips_elf_hash_table (info)->procedure_count = count + 2;
+
+ erp = (struct rpdr_ext *) rtproc;
+ memset (erp, 0, sizeof (struct rpdr_ext));
+ erp++;
+ str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2);
+ strcpy (str, no_name_func);
+ str += strlen (no_name_func) + 1;
+ for (i = 0; i < count; i++)
+ {
+ ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i);
+ strcpy (str, sv[i]);
+ str += strlen (sv[i]) + 1;
+ }
+ ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr);
+
+ /* Set the size and contents of .rtproc section. */
+ s->_raw_size = size;
+ s->contents = (bfd_byte *) rtproc;
+
+ /* Skip this section later on (I don't think this currently
+ matters, but someday it might). */
+ s->link_order_head = (struct bfd_link_order *) NULL;
+
+ if (epdr != NULL)
+ free (epdr);
+ if (rpdr != NULL)
+ free (rpdr);
+ if (esym != NULL)
+ free (esym);
+ if (ss != NULL)
+ free (ss);
+ if (sv != NULL)
+ free (sv);
+
+ return true;
+
+ error_return:
+ if (epdr != NULL)
+ free (epdr);
+ if (rpdr != NULL)
+ free (rpdr);
+ if (esym != NULL)
+ free (esym);
+ if (ss != NULL)
+ free (ss);
+ if (sv != NULL)
+ free (sv);
+ return false;
+}
+
+/* A comparison routine used to sort .gptab entries. */
+
+static int
+gptab_compare (p1, p2)
+ const PTR p1;
+ const PTR p2;
+{
+ const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
+ const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
+
+ return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
+}
+
+/* We need to use a special link routine to handle the .reginfo and
+ the .mdebug sections. We need to merge all instances of these
+ sections together, not write them all out sequentially. */
+
+static boolean
+mips_elf_final_link (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ asection **secpp;
+ asection *o;
+ struct bfd_link_order *p;
+ asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
+ asection *rtproc_sec;
+ Elf32_RegInfo reginfo;
+ struct ecoff_debug_info debug;
+ const struct ecoff_debug_swap *swap
+ = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
+ HDRR *symhdr = &debug.symbolic_header;
+ PTR mdebug_handle = NULL;
/* Drop the .options section, since it has special semantics which I
haven't bothered to figure out. */
}
}
+ /* Get a value for the GP register. */
+ if (elf_gp (abfd) == 0)
+ {
+ struct bfd_link_hash_entry *h;
+
+ h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
+ if (h != (struct bfd_link_hash_entry *) NULL
+ && h->type == bfd_link_hash_defined)
+ elf_gp (abfd) = (h->u.def.value
+ + h->u.def.section->output_section->vma
+ + h->u.def.section->output_offset);
+ else if (info->relocateable)
+ {
+ bfd_vma lo;
+
+ /* Make up a value. */
+ lo = (bfd_vma) -1;
+ for (o = abfd->sections; o != (asection *) NULL; o = o->next)
+ {
+ if (o->vma < lo
+ && (strcmp (o->name, ".sbss") == 0
+ || strcmp (o->name, ".sdata") == 0
+ || strcmp (o->name, ".lit4") == 0
+ || strcmp (o->name, ".lit8") == 0))
+ lo = o->vma;
+ }
+ elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
+ }
+ else
+ {
+ /* If the relocate_section function needs to do a reloc
+ involving the GP value, it should make a reloc_dangerous
+ callback to warn that GP is not defined. */
+ }
+ }
+
/* Go through the sections and collect the .reginfo and .mdebug
information. */
reginfo_sec = NULL;
input_section = p->u.indirect.section;
input_bfd = input_section->owner;
- BFD_ASSERT (input_section->_raw_size
- == sizeof (Elf32_External_RegInfo));
+
+ /* The linker emulation code has probably clobbered the
+ size to be zero bytes. */
+ if (input_section->_raw_size == 0)
+ input_section->_raw_size = sizeof (Elf32_External_RegInfo);
+
if (! bfd_get_section_contents (input_bfd, input_section,
(PTR) &ext,
(file_ptr) 0,
reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
/* ri_gp_value is set by the function
- mips_elf_section_processing when the section is
+ mips_elf32_section_processing when the section is
finally written out. */
/* Hack: reset the SEC_HAS_CONTENTS flag so that
if (mdebug_handle == (PTR) NULL)
return false;
+ if (SGI_COMPAT (abfd))
+ {
+ asection *s;
+ EXTR esym;
+ bfd_vma last;
+ unsigned int i;
+ static const char * const name[] =
+ { ".text", ".init", ".fini", ".data",
+ ".rodata", ".sdata", ".sbss", ".bss" };
+ static const int sc[] = { scText, scInit, scFini, scData,
+ scRData, scSData, scSBss, scBss };
+
+ esym.jmptbl = 0;
+ esym.cobol_main = 0;
+ esym.weakext = 0;
+ esym.reserved = 0;
+ esym.ifd = ifdNil;
+ esym.asym.iss = issNil;
+ esym.asym.st = stLocal;
+ esym.asym.reserved = 0;
+ esym.asym.index = indexNil;
+ for (i = 0; i < 8; i++)
+ {
+ esym.asym.sc = sc[i];
+ s = bfd_get_section_by_name (abfd, name[i]);
+ if (s != NULL)
+ {
+ esym.asym.value = s->vma;
+ last = s->vma + s->_raw_size;
+ }
+ else
+ esym.asym.value = last;
+
+ if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
+ name[i], &esym))
+ return false;
+ }
+ }
+
for (p = o->link_order_head;
p != (struct bfd_link_order *) NULL;
p = p->next)
/* The ECOFF linking code expects that we have already
read in the debugging information and set up an
ecoff_debug_info structure, so we do that now. */
- if (! mips_elf_read_ecoff_info (input_bfd, input_section,
- &input_debug))
+ if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
+ &input_debug))
return false;
if (! (bfd_ecoff_debug_accumulate
input_section->flags &=~ SEC_HAS_CONTENTS;
}
+ if (SGI_COMPAT (abfd) && info->shared)
+ {
+ /* Create .rtproc section. */
+ rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
+ if (rtproc_sec == NULL)
+ {
+ flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED | SEC_READONLY);
+
+ rtproc_sec = bfd_make_section (abfd, ".rtproc");
+ if (rtproc_sec == NULL
+ || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
+ || ! bfd_set_section_alignment (abfd, rtproc_sec, 4))
+ return false;
+ }
+
+ if (! mips_elf_create_procedure_table (mdebug_handle, abfd,
+ info, rtproc_sec, &debug))
+ return false;
+ }
+
/* Build the external symbol information. */
einfo.abfd = abfd;
einfo.info = info;
gptab_bss_sec = o;
else
{
+ (*_bfd_error_handler)
+ ("%s: illegal section name `%s'",
+ bfd_get_filename (abfd), o->name);
bfd_set_error (bfd_error_nonrepresentable_section);
return false;
}
/* Set up the first entry. */
c = 1;
- tab = (Elf32_gptab *) malloc (c * sizeof (Elf32_gptab));
+ tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab));
if (tab == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
tab[0].gt_header.gt_unused = 0;
/* We need a new table entry. */
new_tab = ((Elf32_gptab *)
- realloc ((PTR) tab,
- (c + 1) * sizeof (Elf32_gptab)));
+ bfd_realloc ((PTR) tab,
+ (c + 1) * sizeof (Elf32_gptab)));
if (new_tab == NULL)
{
- bfd_set_error (bfd_error_no_memory);
free (tab);
return false;
}
bfd_alloc (abfd, c * sizeof (Elf32_External_gptab)));
if (ext_tab == NULL)
{
- bfd_set_error (bfd_error_no_memory);
free (tab);
return false;
}
}
}
- /* Get a value for the GP register. */
- if (elf_gp (abfd) == 0)
- {
- struct bfd_link_hash_entry *h;
-
- h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
- if (h != (struct bfd_link_hash_entry *) NULL
- && h->type == bfd_link_hash_defined)
- elf_gp (abfd) = (h->u.def.value
- + h->u.def.section->output_section->vma
- + h->u.def.section->output_offset);
- else if (info->relocateable)
- {
- bfd_vma lo;
-
- /* Make up a value. */
- lo = (bfd_vma) -1;
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- {
- if (o->vma < lo
- && (strcmp (o->name, ".sbss") == 0
- || strcmp (o->name, ".sdata") == 0
- || strcmp (o->name, ".lit4") == 0
- || strcmp (o->name, ".lit8") == 0))
- lo = o->vma;
- }
- elf_gp (abfd) = lo + 0x8000;
- }
- else
- {
- /* If the relocate_section function needs to do a reloc
- involving the GP value, it should make a reloc_dangerous
- callback to warn that GP is not defined. */
- }
- }
-
/* Invoke the regular ELF backend linker to do all the work. */
if (! bfd_elf32_bfd_final_link (abfd, info))
return false;
return false;
}
+ if (SGI_COMPAT (abfd))
+ {
+ rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
+ if (rtproc_sec != NULL)
+ {
+ if (! bfd_set_section_contents (abfd, rtproc_sec,
+ rtproc_sec->contents,
+ (file_ptr) 0,
+ rtproc_sec->_raw_size))
+ return false;
+ }
+ }
+
return true;
}
contents + relhi->r_offset);
}
+/* Handle a MIPS ELF local GOT16 reloc. */
+
+static boolean
+mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello,
+ contents, addend)
+ bfd *output_bfd;
+ bfd *input_bfd;
+ asection *sgot;
+ Elf_Internal_Rela *relhi;
+ Elf_Internal_Rela *rello;
+ bfd_byte *contents;
+ bfd_vma addend;
+{
+ unsigned int assigned_gotno;
+ unsigned int i;
+ bfd_vma insn;
+ bfd_vma addlo;
+ bfd_vma address;
+ bfd_vma hipage;
+ bfd_byte *got_contents;
+ struct mips_got_info *g;
+
+ insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
+
+ addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
+ addlo &= 0xffff;
+
+ addend += ((insn & 0xffff) << 16) + addlo;
+
+ if ((addlo & 0x8000) != 0)
+ addend -= 0x10000;
+ if ((addend & 0x8000) != 0)
+ addend += 0x10000;
+
+ /* Get a got entry representing requested hipage. */
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+
+ assigned_gotno = g->assigned_gotno;
+ got_contents = sgot->contents;
+ hipage = addend & 0xffff0000;
+
+ for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++)
+ {
+ address = bfd_get_32 (input_bfd, got_contents + i * 4);
+ if (hipage == (address & 0xffff0000))
+ break;
+ }
+
+ if (i == assigned_gotno)
+ {
+ if (assigned_gotno >= g->local_gotno)
+ {
+ (*_bfd_error_handler)
+ ("more got entries are needed for hipage relocations");
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4);
+ ++g->assigned_gotno;
+ }
+
+ i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4;
+ bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff),
+ contents + relhi->r_offset);
+
+ return true;
+}
+
+/* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */
+
+static void
+mips_elf_relocate_global_got (input_bfd, rel, contents, offset)
+ bfd *input_bfd;
+ Elf_Internal_Rela *rel;
+ bfd_byte *contents;
+ bfd_vma offset;
+{
+ bfd_vma insn;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ bfd_put_32 (input_bfd,
+ (insn & 0xffff0000) | (offset & 0xffff),
+ contents + rel->r_offset);
+}
+
/* Relocate a MIPS ELF section. */
static boolean
Elf_Internal_Shdr *symtab_hdr;
size_t locsymcount;
size_t extsymoff;
+ asection *sgot, *sreloc, *scpt;
+ bfd *dynobj;
+ bfd_vma gp;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
+ struct mips_got_info *g;
+ dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sgot = NULL;
+ sreloc = NULL;
+ if (dynobj == NULL || ! SGI_COMPAT (output_bfd))
+ scpt = NULL;
+ else
+ scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
+ g = NULL;
+
if (elf_bad_symtab (input_bfd))
{
locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
extsymoff = symtab_hdr->sh_info;
}
+ gp = _bfd_get_gp_value (output_bfd);
+
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
- const reloc_howto_type *howto;
- long r_symndx;
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
bfd_vma addend;
struct elf_link_hash_entry *h;
asection *sec;
Elf_Internal_Sym *sym;
+ struct mips_elf_link_hash_entry *mh;
+ int other;
bfd_reloc_status_type r;
r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type < 0 || r_type >= (int) R_MIPS_max)
+ if ((r_type < 0 || r_type >= (int) R_MIPS_max)
+/* start-sanitize-sky */
+ && r_type != R_MIPS_DVP_11_PCREL
+/* end-sanitize-sky */
+ && r_type != R_MIPS16_26
+ && r_type != R_MIPS16_GPREL)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
- howto = elf_mips_howto_table + r_type;
+ if (r_type == R_MIPS16_26)
+ howto = &elf_mips16_jump_howto;
+ else if (r_type == R_MIPS16_GPREL)
+ howto = &elf_mips16_gprel_howto;
+/* start-sanitize-sky */
+ else if (r_type == R_MIPS_DVP_11_PCREL)
+ howto = &elf_mips_dvp_11_pcrel_howto;
+/* end-sanitize-sky */
+ else
+ howto = elf_mips_howto_table + r_type;
+
+ if (dynobj != NULL
+ && (r_type == R_MIPS_CALL16
+ || r_type == R_MIPS_GOT16
+ || r_type == R_MIPS_CALL_HI16
+ || r_type == R_MIPS_CALL_LO16
+ || r_type == R_MIPS_GOT_HI16
+ || r_type == R_MIPS_GOT_LO16))
+ {
+ /* We need the .got section. */
+ if (sgot == NULL)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+ }
+ }
r_symndx = ELF32_R_SYM (rel->r_info);
/* Mix in the change in GP address for a GP relative reloc. */
if (r_type != R_MIPS_GPREL16
&& r_type != R_MIPS_LITERAL
- && r_type != R_MIPS_GPREL32)
+ && r_type != R_MIPS_GPREL32
+ && r_type != R_MIPS16_GPREL)
addend = 0;
else
{
- if (elf_gp (output_bfd) == 0)
+ if (gp == 0)
{
if (! ((*info->callbacks->reloc_dangerous)
(info,
rel->r_offset)))
return false;
/* Only give the error once per link. */
- elf_gp (output_bfd) = 4;
+ gp = 4;
+ _bfd_set_gp_value (output_bfd, gp);
}
if (r_symndx < extsymoff
must change this to be the difference between the
final definition (which will end up in RELOCATION)
and the GP value of OUTPUT_BFD (which is in GP). */
- addend = elf_gp (input_bfd) - elf_gp (output_bfd);
+ addend = elf_gp (input_bfd) - gp;
}
else if (! info->relocateable)
{
hold the difference between the final definition of
the symbol (which will end up in RELOCATION) and the
GP value of OUTPUT_BFD (which is in GP). */
- addend = - elf_gp (output_bfd);
+ addend = - gp;
}
else
{
value. */
addend += sec->output_offset;
- /* If this is HI16 with an associated LO16, adjust
- the addend accordingly. Otherwise, just
+ /* If this is HI16 or GOT16 with an associated LO16,
+ adjust the addend accordingly. Otherwise, just
relocate. */
- if (r_type != R_MIPS_HI16
- || (rel + 1) >= relend
- || ELF32_R_TYPE ((rel + 1)->r_info) != R_MIPS_LO16)
+ if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd))
+ r = _bfd_relocate_contents (howto, input_bfd,
+ addend,
+ contents + rel->r_offset + 4);
+ else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16)
r = _bfd_relocate_contents (howto, input_bfd,
addend,
contents + rel->r_offset);
else
{
- mips_elf_relocate_hi16 (input_bfd, rel, rel + 1,
- contents, addend);
- r = bfd_reloc_ok;
+ Elf_Internal_Rela *lorel;
+
+ /* As a GNU extension, permit an arbitrary
+ number of R_MIPS_HI16 relocs before the
+ R_MIPS_LO16 reloc. This permits gcc to emit
+ the HI and LO relocs itself. */
+ if (r_type == R_MIPS_GOT16)
+ lorel = rel + 1;
+ else
+ {
+ for (lorel = rel + 1;
+ (lorel < relend
+ && (ELF32_R_TYPE (lorel->r_info)
+ == R_MIPS_HI16));
+ lorel++)
+ ;
+ }
+ if (lorel < relend
+ && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16)
+ {
+ mips_elf_relocate_hi16 (input_bfd, rel, lorel,
+ contents, addend);
+ r = bfd_reloc_ok;
+ }
+ else
+ r = _bfd_relocate_contents (howto, input_bfd,
+ addend,
+ contents + rel->r_offset);
}
}
}
else
{
bfd_vma relocation;
+ boolean local;
/* This is a final link. */
sym = NULL;
|| (elf_bad_symtab (input_bfd)
&& local_sections[r_symndx] != NULL))
{
+ local = true;
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = (sec->output_section->vma
value. */
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
relocation += sym->st_value;
+
+ /* mips16 text labels should be treated as odd. */
+ if (sym->st_other == STO_MIPS16)
+ ++relocation;
}
else
{
long indx;
+ local = false;
indx = r_symndx - extsymoff;
h = elf_sym_hashes (input_bfd)[indx];
- if (h->root.type == bfd_link_hash_defined)
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ if (strcmp (h->root.root.string, "_gp_disp") == 0)
+ {
+ if (gp == 0)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info,
+ "_gp_disp used when GP not defined",
+ input_bfd, input_section,
+ rel->r_offset)))
+ return false;
+ /* Only give the error once per link. */
+ gp = 4;
+ _bfd_set_gp_value (output_bfd, gp);
+ relocation = 0;
+ }
+ else
+ {
+ sec = input_section;
+ if (sec->output_section != NULL)
+ relocation = (gp
+ - (rel->r_offset
+ + sec->output_section->vma
+ + sec->output_offset));
+ else
+ relocation = gp - rel->r_offset;
+ if (r_type == R_MIPS_LO16)
+ relocation += 4;
+ }
+ }
+ else if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ if (sec->output_section == NULL)
+ relocation = 0;
+ else
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
}
- else if (h->root.type == bfd_link_hash_weak)
+ else if (h->root.type == bfd_link_hash_undefweak)
+ relocation = 0;
+ else if (info->shared && ! info->symbolic)
relocation = 0;
+ else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0)
+ {
+ /* If this is a dynamic link, we should have created
+ a _DYNAMIC_LINK symbol in
+ mips_elf_create_dynamic_sections. Otherwise, we
+ should define the symbol with a value of 0.
+ FIXME: It should probably get into the symbol
+ table somehow as well. */
+ BFD_ASSERT (! info->shared);
+ BFD_ASSERT (bfd_get_section_by_name (output_bfd,
+ ".dynamic") == NULL);
+ relocation = 0;
+ }
else
{
if (! ((*info->callbacks->undefined_symbol)
}
}
- if (r_type != R_MIPS_HI16
- || (rel + 1) >= relend
- || ELF32_R_TYPE ((rel + 1)->r_info) != R_MIPS_LO16)
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
+ mh = (struct mips_elf_link_hash_entry *) h;
+ if (h != NULL)
+ other = h->other;
+ else if (sym != NULL)
+ other = sym->st_other;
else
+ other = 0;
+
+ /* If this function has an fn_stub, then it is a mips16
+ function which needs a stub if it is called by a 32 bit
+ function. If this reloc is anything other than a 16 bit
+ call, redirect the reloc to the stub. We don't redirect
+ relocs from other stub functions. */
+ if (r_type != R_MIPS16_26
+ && ((mh != NULL
+ && mh->fn_stub != NULL)
+ || (mh == NULL
+ && elf_tdata (input_bfd)->local_stubs != NULL
+ && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
+ && strncmp (bfd_get_section_name (input_bfd, input_section),
+ FN_STUB, sizeof FN_STUB - 1) != 0
+ && strncmp (bfd_get_section_name (input_bfd, input_section),
+ CALL_STUB, sizeof CALL_STUB - 1) != 0
+ && strncmp (bfd_get_section_name (input_bfd, input_section),
+ CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0)
{
- mips_elf_relocate_hi16 (input_bfd, rel, rel + 1,
- contents, relocation + addend);
- r = bfd_reloc_ok;
+ if (mh != NULL)
+ {
+ BFD_ASSERT (mh->need_fn_stub);
+ relocation = (mh->fn_stub->output_section->vma
+ + mh->fn_stub->output_offset);
+ }
+ else
+ {
+ asection *fn_stub;
+
+ fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx];
+ relocation = (fn_stub->output_section->vma
+ + fn_stub->output_offset);
+ }
+
+ /* RELOCATION now points to 32 bit code. */
+ other = 0;
}
- }
- if (r != bfd_reloc_ok)
- {
- switch (r)
+ /* If this function has a call_stub, then it is called by a
+ mips16 function; the call needs to go through a stub if
+ this function is a 32 bit function. If this reloc is a
+ 16 bit call, and the symbol is not a 16 bit function,
+ then redirect the reloc to the stub. Note that we don't
+ need to worry about calling the function through a
+ function pointer; such calls are handled by routing
+ through a special mips16 routine. We don't have to check
+ whether this call is from a stub; it can't be, because a
+ stub contains 32 bit code, and hence can not have a 16
+ bit reloc. */
+ if (r_type == R_MIPS16_26
+ && mh != NULL
+ && (mh->call_stub != NULL || mh->call_fp_stub != NULL)
+ && other != STO_MIPS16)
{
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
+ asection *stub;
+
+ /* If both call_stub and call_fp_stub are defined, we
+ can figure out which one to use by seeing which one
+ appears in the input file. */
+ if (mh->call_stub != NULL && mh->call_fp_stub != NULL)
+ {
+ asection *o;
+
+ stub = NULL;
+ for (o = input_bfd->sections; o != NULL; o = o->next)
+ {
+ if (strncmp (bfd_get_section_name (input_bfd, o),
+ CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
+ {
+ stub = mh->call_fp_stub;
+ break;
+ }
+ }
+ if (stub == NULL)
+ stub = mh->call_stub;
+ }
+ else if (mh->call_stub != NULL)
+ stub = mh->call_stub;
+ else
+ stub = mh->call_fp_stub;
+
+ BFD_ASSERT (stub->_raw_size > 0);
+ relocation = stub->output_section->vma + stub->output_offset;
+ }
+
+ if (r_type == R_MIPS_HI16)
+ {
+ Elf_Internal_Rela *lorel;
+
+ /* As a GNU extension, permit an arbitrary number of
+ R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc.
+ This permits gcc to emit the HI and LO relocs itself. */
+ for (lorel = rel + 1;
+ (lorel < relend
+ && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16);
+ lorel++)
+ ;
+ if (lorel < relend
+ && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16)
+ {
+ mips_elf_relocate_hi16 (input_bfd, rel, lorel,
+ contents, relocation + addend);
+ r = bfd_reloc_ok;
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, addend);
+ }
+ else if (r_type == R_MIPS_GOT16 && local)
+ {
+ /* GOT16 must also have an associated LO16 in the local
+ case. In this case, the addend is extracted and the
+ section in which the referenced object is determined.
+ Then the final address of the object is computed and
+ the GOT entry for the hipage (an aligned 64kb chunk)
+ is added to .got section if needed. The offset field
+ of the GOT16-relocated instruction is replaced by the
+ index of this GOT entry for the hipage. */
+ if ((rel + 1) < relend
+ && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16)
+ {
+ if (! mips_elf_relocate_got_local (output_bfd, input_bfd,
+ sgot, rel, rel + 1,
+ contents,
+ relocation + addend))
+ return false;
+ r = bfd_reloc_ok;
+ }
+ else
+ r = bfd_reloc_outofrange;
+ }
+ else if (r_type == R_MIPS_CALL16
+ || r_type == R_MIPS_GOT16
+ || r_type == R_MIPS_CALL_LO16
+ || r_type == R_MIPS_GOT_LO16)
+ {
+ bfd_vma offset;
+
+ /* This symbol must be registered as a global symbol
+ having the corresponding got entry. */
+ BFD_ASSERT (h->got_offset != (bfd_vma) -1);
+
+ offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
+ BFD_ASSERT (g->local_gotno <= offset
+ && offset < sgot->_raw_size);
+ bfd_put_32 (output_bfd, relocation + addend,
+ sgot->contents + offset);
+ offset = (sgot->output_section->vma + sgot->output_offset
+ + offset - gp);
+ mips_elf_relocate_global_got (input_bfd, rel, contents,
+ offset);
+ r = bfd_reloc_ok;
+ }
+ else if (r_type == R_MIPS_CALL_HI16
+ || r_type == R_MIPS_GOT_HI16)
+ {
+ bfd_vma offset;
+
+ /* This must be a global symbol with a got entry. The
+ next reloc must be the corresponding LO16 reloc. */
+ BFD_ASSERT (h != NULL && h->got_offset != (bfd_vma) -1);
+ BFD_ASSERT ((rel + 1) < relend);
+ BFD_ASSERT (ELF32_R_TYPE ((rel + 1)->r_info)
+ == (r_type == R_MIPS_CALL_HI16
+ ? R_MIPS_CALL_LO16
+ : R_MIPS_GOT_LO16));
+
+ offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
+ BFD_ASSERT (g->local_gotno <= offset
+ && offset < sgot->_raw_size);
+ bfd_put_32 (output_bfd, relocation + addend,
+ sgot->contents + offset);
+ offset = (sgot->output_section->vma + sgot->output_offset
+ + offset - gp);
+ mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents,
+ offset);
+ r = bfd_reloc_ok;
+ }
+ else if (r_type == R_MIPS_REL32
+ || r_type == R_MIPS_32)
+ {
+ Elf_Internal_Rel outrel;
+ Elf32_crinfo cptrel;
+ bfd_byte *cr;
+
+ if ((info->shared
+ || (elf_hash_table (info)->dynamic_sections_created
+ && h != NULL
+ && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
+ == 0)))
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ boolean skip;
+
+ /* When generating a shared object, these
+ relocations are copied into the output file to be
+ resolved at run time. */
+ if (sreloc == NULL)
+ {
+ sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ BFD_ASSERT (sreloc != NULL);
+ }
+
+ skip = false;
+
+ if (elf_section_data (input_section)->stab_info == NULL)
+ outrel.r_offset = rel->r_offset;
+ else
+ {
+ bfd_vma off;
+
+ off = (_bfd_stab_section_offset
+ (output_bfd, &elf_hash_table (info)->stab_info,
+ input_section,
+ &elf_section_data (input_section)->stab_info,
+ rel->r_offset));
+ if (off == (bfd_vma) -1)
+ skip = true;
+ outrel.r_offset = off;
+ }
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ else if (h != NULL
+ && (! info->symbolic
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ {
+ BFD_ASSERT (h->dynindx != -1);
+ outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32);
+ sec = input_section;
+ }
+ else
+ {
+ long indx;
+
+ if (h == NULL)
+ sec = local_sections[r_symndx];
+ else
+ {
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined
+ || (h->root.type
+ == bfd_link_hash_defweak));
+ sec = h->root.u.def.section;
+ }
+ if (sec != NULL && bfd_is_abs_section (sec))
+ indx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ else
+ {
+ asection *osec;
+
+ osec = sec->output_section;
+ indx = elf_section_data (osec)->dynindx;
+ if (indx == 0)
+ abort ();
+ }
+
+ outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
+ addend += relocation;
+ }
+
+ if (! skip)
+ bfd_put_32 (output_bfd, addend, contents + rel->r_offset);
+
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel,
+ (((Elf32_External_Rel *)
+ sreloc->contents)
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
+
+ if (! skip && SGI_COMPAT (output_bfd))
+ {
+ if (scpt == NULL)
+ continue;
+
+ /* Make an entry of compact relocation info. */
+ mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
+ cptrel.vaddr = (rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset);
+ if (r_type == R_MIPS_REL32)
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
+ else
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
+ mips_elf_set_cr_dist2to (cptrel, 0);
+ cptrel.konst = addend;
+
+ cr = (scpt->contents
+ + sizeof (Elf32_External_compact_rel));
+ bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
+ ((Elf32_External_crinfo *) cr
+ + scpt->reloc_count));
+ ++scpt->reloc_count;
+ }
+
+ /* This reloc will be computed at runtime, so
+ there's no need to do anything now. */
+ continue;
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, addend);
+ }
+ else if (r_type == R_MIPS_64)
+ {
+ bfd_size_type addr;
+ unsigned long val;
+
+ /* Do a 32 bit relocation, and sign extend to 64 bits. */
+ addr = rel->r_offset;
+ if (bfd_big_endian (input_bfd))
+ addr += 4;
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, addr, relocation,
+ addend);
+ val = bfd_get_32 (input_bfd, contents + addr);
+ if ((val & 0x80000000) != 0)
+ val = 0xffffffff;
+ else
+ val = 0;
+ addr = rel->r_offset;
+ if (bfd_little_endian (input_bfd))
+ addr += 4;
+ bfd_put_32 (input_bfd, val, contents + addr);
+ }
+ else if (r_type == R_MIPS_26 && other == STO_MIPS16)
+ {
+ unsigned long insn;
+
+ /* This is a jump to a mips16 routine from a mips32
+ routine. We need to change jal into jalx. */
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if (((insn >> 26) & 0x3f) != 0x3
+ && ((insn >> 26) & 0x3f) != 0x1d)
+ {
+ (*_bfd_error_handler)
+ ("%s: %s+0x%lx: jump to mips16 routine which is not jal",
+ bfd_get_filename (input_bfd),
+ input_section->name,
+ (unsigned long) rel->r_offset);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ insn = (insn & 0x3ffffff) | (0x1d << 26);
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, addend);
+ }
+ else if (r_type == R_MIPS16_26)
+ {
+ /* It's easiest to do the normal relocation, and then
+ dig out the instruction and swap the first word the
+ way the mips16 expects it. If this is little endian,
+ though, we need to swap the two words first, and then
+ swap them back again later, so that the address looks
+ right. */
+
+ if (bfd_little_endian (input_bfd))
+ {
+ unsigned long insn;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16);
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ }
+
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, addend);
+ if (r == bfd_reloc_ok)
+ {
+ unsigned long insn;
+
+ if (bfd_little_endian (input_bfd))
+ {
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16);
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ }
+
+ insn = bfd_get_16 (input_bfd, contents + rel->r_offset);
+ insn = ((insn & 0xfc00)
+ | ((insn & 0x1f) << 5)
+ | ((insn & 0x3e0) >> 5));
+ /* If this is a jump to a 32 bit routine, then make
+ it jalx. */
+ if (other != STO_MIPS16)
+ insn |= 0x400;
+ bfd_put_16 (input_bfd, insn, contents + rel->r_offset);
+ }
+ }
+ else if (r_type == R_MIPS16_GPREL)
+ {
+ unsigned short extend, insn;
+ bfd_byte buf[4];
+ unsigned long final;
+
+ /* Extract the addend into buf, run the regular reloc,
+ and stuff the resulting value back into the
+ instructions. */
+ if (rel->r_offset > input_section->_raw_size)
+ r = bfd_reloc_outofrange;
+ else
+ {
+ extend = bfd_get_16 (input_bfd, contents + rel->r_offset);
+ insn = bfd_get_16 (input_bfd, contents + rel->r_offset + 2);
+ bfd_put_32 (input_bfd,
+ (((extend & 0x1f) << 11)
+ | (extend & 0x7e0)
+ | (insn & 0x1f)),
+ buf);
+ r = _bfd_final_link_relocate (howto, input_bfd,
+ input_section, buf,
+ (bfd_vma) 0, relocation,
+ addend);
+ final = bfd_get_32 (input_bfd, buf);
+ bfd_put_16 (input_bfd,
+ ((extend & 0xf800)
+ | ((final >> 11) & 0x1f)
+ | (final & 0x7e0)),
+ contents + rel->r_offset);
+ bfd_put_16 (input_bfd,
+ ((insn & 0xffe0)
+ | (final & 0x1f)),
+ contents + rel->r_offset + 2);
+ }
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, addend);
+
+ /* The jal instruction can only jump to an address which is
+ divisible by 4, and it can only jump to an address with
+ the same upper 4 bits as the PC. */
+ if (r == bfd_reloc_ok
+ && (r_type == R_MIPS16_26 || r_type == R_MIPS_26))
+ {
+ bfd_vma addr;
+
+ addr = relocation;
+ if (other == STO_MIPS16)
+ addr &= ~ (bfd_vma) 1;
+ addr += addend;
+ if ((addr & 3) != 0
+ || ((addr & 0xf0000000)
+ != ((input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset)
+ & 0xf0000000)))
+ r = bfd_reloc_overflow;
+ }
+
+ if (SGI_COMPAT (abfd)
+ && scpt != NULL
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ Elf32_crinfo cptrel;
+ bfd_byte *cr;
+
+ /* Make an entry of compact relocation info. */
+ mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
+ cptrel.vaddr = (rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset);
+
+ switch (r_type)
+ {
+ case R_MIPS_26:
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD);
+ /* XXX How should we set dist2to in this case. */
+ mips_elf_set_cr_dist2to (cptrel, 8);
+ cptrel.konst = addend + relocation;
+ cr = scpt->contents + sizeof (Elf32_External_compact_rel);
+ bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
+ ((Elf32_External_crinfo *) cr
+ + scpt->reloc_count));
+ ++scpt->reloc_count;
+ break;
+
+ case R_MIPS_GPREL16:
+ case R_MIPS_LITERAL:
+ case R_MIPS_GPREL32:
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO);
+ cptrel.konst = gp - cptrel.vaddr;
+ mips_elf_set_cr_dist2to (cptrel, 4);
+ cr = scpt->contents + sizeof (Elf32_External_compact_rel);
+ bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
+ ((Elf32_External_crinfo *) cr
+ + scpt->reloc_count));
+ ++scpt->reloc_count;
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ {
+ const char *name;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (name == NULL)
+ return false;
+ if (*name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ }
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* This hook function is called before the linker writes out a global
+ symbol. We mark symbols as small common if appropriate. This is
+ also where we undo the increment of the value for a mips16 symbol. */
+
+/*ARGSIGNORED*/
+static boolean
+mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ const char *name;
+ Elf_Internal_Sym *sym;
+ asection *input_sec;
+{
+ /* If we see a common symbol, which implies a relocatable link, then
+ if a symbol was small common in an input file, mark it as small
+ common in the output file. */
+ if (sym->st_shndx == SHN_COMMON
+ && strcmp (input_sec->name, ".scommon") == 0)
+ sym->st_shndx = SHN_MIPS_SCOMMON;
+
+ if (sym->st_other == STO_MIPS16
+ && (sym->st_value & 1) != 0)
+ --sym->st_value;
+
+ return true;
+}
+\f
+/* Functions for the dynamic linker. */
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+
+/* Create dynamic sections when linking against a dynamic object. */
+
+static boolean
+mips_elf_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ struct elf_link_hash_entry *h;
+ flagword flags;
+ register asection *s;
+ const char * const *namep;
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED | SEC_READONLY);
+
+ /* Mips ABI requests the .dynamic section to be read only. */
+ s = bfd_get_section_by_name (abfd, ".dynamic");
+ if (s != NULL)
+ {
+ if (! bfd_set_section_flags (abfd, s, flags))
+ return false;
+ }
+
+ /* We need to create .got section. */
+ if (! mips_elf_create_got_section (abfd, info))
+ return false;
+
+ /* Create .stub section. */
+ if (bfd_get_section_by_name (abfd, ".stub") == NULL)
+ {
+ s = bfd_make_section (abfd, ".stub");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+ }
+
+ if (SGI_COMPAT (abfd)
+ && !info->shared
+ && bfd_get_section_by_name (abfd, ".rld_map") == NULL)
+ {
+ s = bfd_make_section (abfd, ".rld_map");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+ }
+
+ if (SGI_COMPAT (abfd))
+ {
+ for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
+ {
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_SECTION;
+
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ /* We need to create a .compact_rel section. */
+ if (! mips_elf_create_compact_rel_section (abfd, info))
+ return false;
+
+ /* Change aligments of some sections. */
+ s = bfd_get_section_by_name (abfd, ".hash");
+ if (s != NULL)
+ bfd_set_section_alignment (abfd, s, 4);
+ s = bfd_get_section_by_name (abfd, ".dynsym");
+ if (s != NULL)
+ bfd_set_section_alignment (abfd, s, 4);
+ s = bfd_get_section_by_name (abfd, ".dynstr");
+ if (s != NULL)
+ bfd_set_section_alignment (abfd, s, 4);
+ s = bfd_get_section_by_name (abfd, ".reginfo");
+ if (s != NULL)
+ bfd_set_section_alignment (abfd, s, 4);
+ s = bfd_get_section_by_name (abfd, ".dynamic");
+ if (s != NULL)
+ bfd_set_section_alignment (abfd, s, 4);
+ }
+
+ if (!info->shared)
+ {
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_SECTION;
+
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+
+ if (! mips_elf_hash_table (info)->use_rld_obj_head)
+ {
+ /* __rld_map is a four byte word located in the .data section
+ and is filled in by the rtld to contain a pointer to
+ the _r_debug structure. Its symbol value will be set in
+ mips_elf_finish_dynamic_symbol. */
+ s = bfd_get_section_by_name (abfd, ".rld_map");
+ BFD_ASSERT (s != NULL);
+
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "__rld_map", BSF_GLOBAL, s,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_OBJECT;
+
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Create the .compact_rel section. */
+
+static boolean
+mips_elf_create_compact_rel_section (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+
+ if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL)
+ {
+ flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_READONLY);
+
+ s = bfd_make_section (abfd, ".compact_rel");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ s->_raw_size = sizeof (Elf32_External_compact_rel);
+ }
+
+ return true;
+}
+
+/* Create the .got section to hold the global offset table. */
+
+static boolean
+mips_elf_create_got_section (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+ struct elf_link_hash_entry *h;
+ struct mips_got_info *g;
+
+ /* This function may be called more than once. */
+ if (bfd_get_section_by_name (abfd, ".got") != NULL)
+ return true;
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ s = bfd_make_section (abfd, ".got");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, 4))
+ return false;
+
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
+ linker script because we don't want to define the symbol if we
+ are not creating a global offset table. */
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_OBJECT;
+
+ if (info->shared
+ && ! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+
+ /* The first several global offset table entries are reserved. */
+ s->_raw_size = MIPS_RESERVED_GOTNO * 4;
+
+ g = (struct mips_got_info *) bfd_alloc (abfd,
+ sizeof (struct mips_got_info));
+ if (g == NULL)
+ return false;
+ g->global_gotsym = 0;
+ g->local_gotno = MIPS_RESERVED_GOTNO;
+ g->assigned_gotno = MIPS_RESERVED_GOTNO;
+ if (elf_section_data (s) == NULL)
+ {
+ s->used_by_bfd =
+ (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
+ if (elf_section_data (s) == NULL)
+ return false;
+ }
+ elf_section_data (s)->tdata = (PTR) g;
+
+ return true;
+}
+
+/* Look through the relocs for a section during the first phase, and
+ allocate space in the global offset table. */
+
+static boolean
+mips_elf_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+ const char *name;
+ bfd *dynobj;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ struct mips_got_info *g;
+ size_t extsymoff;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sgot;
+ asection *sreloc;
+
+ if (info->relocateable)
+ return true;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
+
+ /* Check for the mips16 stub sections. */
+
+ name = bfd_get_section_name (abfd, sec);
+ if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
+ {
+ unsigned long r_symndx;
+
+ /* Look at the relocation information to figure out which symbol
+ this is for. */
+
+ r_symndx = ELF32_R_SYM (relocs->r_info);
+
+ if (r_symndx < extsymoff
+ || sym_hashes[r_symndx - extsymoff] == NULL)
+ {
+ asection *o;
+
+ /* This stub is for a local symbol. This stub will only be
+ needed if there is some relocation in this BFD, other
+ than a 16 bit function call, which refers to this symbol. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ Elf_Internal_Rela *sec_relocs;
+ const Elf_Internal_Rela *r, *rend;
+
+ /* We can ignore stub sections when looking for relocs. */
+ if ((o->flags & SEC_RELOC) == 0
+ || o->reloc_count == 0
+ || strncmp (bfd_get_section_name (abfd, o), FN_STUB,
+ sizeof FN_STUB - 1) == 0
+ || strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
+ sizeof CALL_STUB - 1) == 0
+ || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
+ sizeof CALL_FP_STUB - 1) == 0)
+ continue;
+
+ sec_relocs = (_bfd_elf32_link_read_relocs
+ (abfd, o, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->keep_memory));
+ if (sec_relocs == NULL)
+ return false;
+
+ rend = sec_relocs + o->reloc_count;
+ for (r = sec_relocs; r < rend; r++)
+ if (ELF32_R_SYM (r->r_info) == r_symndx
+ && ELF32_R_TYPE (r->r_info) != R_MIPS16_26)
+ break;
+
+ if (! info->keep_memory)
+ free (sec_relocs);
+
+ if (r < rend)
+ break;
+ }
+
+ if (o == NULL)
+ {
+ /* There is no non-call reloc for this stub, so we do
+ not need it. Since this function is called before
+ the linker maps input sections to output sections, we
+ can easily discard it by setting the SEC_EXCLUDE
+ flag. */
+ sec->flags |= SEC_EXCLUDE;
+ return true;
+ }
+
+ /* Record this stub in an array of local symbol stubs for
+ this BFD. */
+ if (elf_tdata (abfd)->local_stubs == NULL)
+ {
+ unsigned long symcount;
+ asection **n;
+
+ if (elf_bad_symtab (abfd))
+ symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
+ else
+ symcount = symtab_hdr->sh_info;
+ n = (asection **) bfd_zalloc (abfd,
+ symcount * sizeof (asection *));
+ if (n == NULL)
+ return false;
+ elf_tdata (abfd)->local_stubs = n;
+ }
+
+ elf_tdata (abfd)->local_stubs[r_symndx] = sec;
+
+ /* We don't need to set mips16_stubs_seen in this case.
+ That flag is used to see whether we need to look through
+ the global symbol table for stubs. We don't need to set
+ it here, because we just have a local stub. */
+ }
+ else
+ {
+ struct mips_elf_link_hash_entry *h;
+
+ h = ((struct mips_elf_link_hash_entry *)
+ sym_hashes[r_symndx - extsymoff]);
+
+ /* H is the symbol this stub is for. */
+
+ h->fn_stub = sec;
+ mips_elf_hash_table (info)->mips16_stubs_seen = true;
+ }
+ }
+ else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
+ || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
+ {
+ unsigned long r_symndx;
+ struct mips_elf_link_hash_entry *h;
+ asection **loc;
+
+ /* Look at the relocation information to figure out which symbol
+ this is for. */
+
+ r_symndx = ELF32_R_SYM (relocs->r_info);
+
+ if (r_symndx < extsymoff
+ || sym_hashes[r_symndx - extsymoff] == NULL)
+ {
+ /* This stub was actually built for a static symbol defined
+ in the same file. We assume that all static symbols in
+ mips16 code are themselves mips16, so we can simply
+ discard this stub. Since this function is called before
+ the linker maps input sections to output sections, we can
+ easily discard it by setting the SEC_EXCLUDE flag. */
+ sec->flags |= SEC_EXCLUDE;
+ return true;
+ }
+
+ h = ((struct mips_elf_link_hash_entry *)
+ sym_hashes[r_symndx - extsymoff]);
+
+ /* H is the symbol this stub is for. */
+
+ if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
+ loc = &h->call_fp_stub;
+ else
+ loc = &h->call_stub;
+
+ /* If we already have an appropriate stub for this function, we
+ don't need another one, so we can discard this one. Since
+ this function is called before the linker maps input sections
+ to output sections, we can easily discard it by setting the
+ SEC_EXCLUDE flag. We can also discard this section if we
+ happen to already know that this is a mips16 function; it is
+ not necessary to check this here, as it is checked later, but
+ it is slightly faster to check now. */
+ if (*loc != NULL || h->root.other == STO_MIPS16)
+ {
+ sec->flags |= SEC_EXCLUDE;
+ return true;
+ }
+
+ *loc = sec;
+ mips_elf_hash_table (info)->mips16_stubs_seen = true;
+ }
+
+ if (dynobj == NULL)
+ {
+ sgot = NULL;
+ g = NULL;
+ }
+ else
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ if (sgot == NULL)
+ g = NULL;
+ else
+ {
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+ }
+ }
+
+ sreloc = NULL;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (r_symndx < extsymoff)
+ h = NULL;
+ else
+ {
+ h = sym_hashes[r_symndx - extsymoff];
+
+ /* This may be an indirect symbol created because of a version. */
+ if (h != NULL)
+ {
+ while (h->root.type == bfd_link_hash_indirect)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
+ }
+
+ /* Some relocs require a global offset table. */
+ if (dynobj == NULL || sgot == NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_MIPS_GOT16:
+ case R_MIPS_CALL16:
+ case R_MIPS_CALL_HI16:
+ case R_MIPS_CALL_LO16:
+ case R_MIPS_GOT_HI16:
+ case R_MIPS_GOT_LO16:
+ if (dynobj == NULL)
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ if (! mips_elf_create_got_section (dynobj, info))
+ return false;
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+ break;
+
+ case R_MIPS_32:
+ case R_MIPS_REL32:
+ if (dynobj == NULL
+ && (info->shared || h != NULL)
+ && (sec->flags & SEC_ALLOC) != 0)
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_MIPS_CALL16:
+ case R_MIPS_CALL_HI16:
+ case R_MIPS_CALL_LO16:
+ /* This symbol requires a global offset table entry. */
+
+ if (h == NULL)
+ {
+ (*_bfd_error_handler)
+ ("%s: CALL16 reloc at 0x%lx not against global symbol",
+ bfd_get_filename (abfd), (unsigned long) rel->r_offset);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ if (h->got_offset != (bfd_vma) -1)
+ {
+ /* We have already allocated space in the .got. */
+ break;
+ }
+
+ /* Note the index of the first global got symbol in .dynsym. */
+ if (g->global_gotsym == 0
+ || g->global_gotsym > (unsigned long) h->dynindx)
+ g->global_gotsym = h->dynindx;
+
+ /* Make this symbol to have the corresponding got entry. */
+ h->got_offset = 0;
+
+ /* We need a stub, not a plt entry for the undefined
+ function. But we record it as if it needs plt. See
+ elf_adjust_dynamic_symbol in elflink.h. */
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->type = STT_FUNC;
+
+ break;
+
+ case R_MIPS_GOT16:
+ case R_MIPS_GOT_HI16:
+ case R_MIPS_GOT_LO16:
+ /* This symbol requires a global offset table entry. */
+
+ if (h != NULL)
+ {
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ if (h->got_offset != (bfd_vma) -1)
+ {
+ /* We have already allocated space in the .got. */
+ break;
+ }
+ /* Note the index of the first global got symbol in
+ .dynsym. */
+ if (g->global_gotsym == 0
+ || g->global_gotsym > (unsigned long) h->dynindx)
+ g->global_gotsym = h->dynindx;
+
+ /* Make this symbol to be the global got symbol. */
+ h->got_offset = 0;
+ }
+
+ break;
+
+ case R_MIPS_32:
+ case R_MIPS_REL32:
+ if ((info->shared || h != NULL)
+ && (sec->flags & SEC_ALLOC) != 0)
+ {
+ if (sreloc == NULL)
+ {
+ const char *name = ".rel.dyn";
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ if (sreloc == NULL)
+ {
+ sreloc = bfd_make_section (dynobj, name);
+ if (sreloc == NULL
+ || ! bfd_set_section_flags (dynobj, sreloc,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY))
+ || ! bfd_set_section_alignment (dynobj, sreloc,
+ 4))
+ return false;
+ }
+ }
+ if (info->shared)
+ {
+ /* When creating a shared object, we must copy these
+ reloc types into the output file as R_MIPS_REL32
+ relocs. We make room for this reloc in the
+ .rel.dyn reloc section */
+ if (sreloc->_raw_size == 0)
+ {
+ /* Add a null element. */
+ sreloc->_raw_size += sizeof (Elf32_External_Rel);
+ ++sreloc->reloc_count;
+ }
+ sreloc->_raw_size += sizeof (Elf32_External_Rel);
+ }
+ else
+ {
+ struct mips_elf_link_hash_entry *hmips;
+
+ /* We only need to copy this reloc if the symbol is
+ defined in a dynamic object. */
+ hmips = (struct mips_elf_link_hash_entry *) h;
+ ++hmips->mips_32_relocs;
+ }
+ }
+
+ if (SGI_COMPAT (abfd))
+ mips_elf_hash_table (info)->compact_rel_size +=
+ sizeof (Elf32_External_crinfo);
+
+ break;
+
+ case R_MIPS_26:
+ case R_MIPS_GPREL16:
+ case R_MIPS_LITERAL:
+ case R_MIPS_GPREL32:
+ if (SGI_COMPAT (abfd))
+ mips_elf_hash_table (info)->compact_rel_size +=
+ sizeof (Elf32_External_crinfo);
+ break;
+
+ default:
+ break;
+ }
+
+ /* If this reloc is not a 16 bit call, and it has a global
+ symbol, then we will need the fn_stub if there is one.
+ References from a stub section do not count. */
+ if (h != NULL
+ && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26
+ && strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
+ sizeof FN_STUB - 1) != 0
+ && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
+ sizeof CALL_STUB - 1) != 0
+ && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB,
+ sizeof CALL_FP_STUB - 1) != 0)
+ {
+ struct mips_elf_link_hash_entry *mh;
+
+ mh = (struct mips_elf_link_hash_entry *) h;
+ mh->need_fn_stub = true;
+ }
+ }
+
+ return true;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
+
+static boolean
+mips_elf_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+{
+ bfd *dynobj;
+ struct mips_elf_link_hash_entry *hmips;
+ asection *s;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Make sure we know what is going on here. */
+ BFD_ASSERT (dynobj != NULL
+ && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
+ || h->weakdef != NULL
+ || ((h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_REF_REGULAR) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0)));
+
+ /* If this symbol is defined in a dynamic object, we need to copy
+ any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
+ file. */
+ hmips = (struct mips_elf_link_hash_entry *) h;
+ if (! info->relocateable
+ && hmips->mips_32_relocs != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ s = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ BFD_ASSERT (s != NULL);
+
+ if (s->_raw_size == 0)
+ {
+ /* Make room for a null element. */
+ s->_raw_size += sizeof (Elf32_External_Rel);
+ ++s->reloc_count;
+ }
+ s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel);
+ }
+
+ /* For a function, create a stub, if needed. */
+ if (h->type == STT_FUNC
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ {
+ if (! elf_hash_table (info)->dynamic_sections_created)
+ return true;
+
+ /* If this symbol is not defined in a regular file, then set
+ the symbol to the stub location. This is required to make
+ function pointers compare as equal between the normal
+ executable and the shared library. */
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ /* We need .stub section. */
+ s = bfd_get_section_by_name (dynobj, ".stub");
+ BFD_ASSERT (s != NULL);
+
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+
+ /* XXX Write this stub address somewhere. */
+ h->plt_offset = s->_raw_size;
+
+ /* Make room for this stub code. */
+ s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
+
+ /* The last half word of the stub will be filled with the index
+ of this symbol in .dynsym section. */
+ return true;
+ }
+ }
+
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->weakdef != NULL)
+ {
+ BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
+ || h->weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->weakdef->root.u.def.section;
+ h->root.u.def.value = h->weakdef->root.u.def.value;
+ return true;
+ }
+
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. */
+
+ return true;
+}
+
+/* This function is called after all the input files have been read,
+ and the input sections have been assigned to output sections. We
+ check for any mips16 stub sections that we can discard. */
+
+static boolean mips_elf_check_mips16_stubs
+ PARAMS ((struct mips_elf_link_hash_entry *, PTR));
+
+static boolean
+mips_elf_always_size_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ if (info->relocateable
+ || ! mips_elf_hash_table (info)->mips16_stubs_seen)
+ return true;
+
+ mips_elf_link_hash_traverse (mips_elf_hash_table (info),
+ mips_elf_check_mips16_stubs,
+ (PTR) NULL);
+
+ return true;
+}
+
+/* Check the mips16 stubs for a particular symbol, and see if we can
+ discard them. */
+
+/*ARGSUSED*/
+static boolean
+mips_elf_check_mips16_stubs (h, data)
+ struct mips_elf_link_hash_entry *h;
+ PTR data;
+{
+ if (h->fn_stub != NULL
+ && ! h->need_fn_stub)
+ {
+ /* We don't need the fn_stub; the only references to this symbol
+ are 16 bit calls. Clobber the size to 0 to prevent it from
+ being included in the link. */
+ h->fn_stub->_raw_size = 0;
+ h->fn_stub->_cooked_size = 0;
+ h->fn_stub->flags &= ~ SEC_RELOC;
+ h->fn_stub->reloc_count = 0;
+ h->fn_stub->flags |= SEC_EXCLUDE;
+ }
+
+ if (h->call_stub != NULL
+ && h->root.other == STO_MIPS16)
+ {
+ /* We don't need the call_stub; this is a 16 bit function, so
+ calls from other 16 bit functions are OK. Clobber the size
+ to 0 to prevent it from being included in the link. */
+ h->call_stub->_raw_size = 0;
+ h->call_stub->_cooked_size = 0;
+ h->call_stub->flags &= ~ SEC_RELOC;
+ h->call_stub->reloc_count = 0;
+ h->call_stub->flags |= SEC_EXCLUDE;
+ }
+
+ if (h->call_fp_stub != NULL
+ && h->root.other == STO_MIPS16)
+ {
+ /* We don't need the call_stub; this is a 16 bit function, so
+ calls from other 16 bit functions are OK. Clobber the size
+ to 0 to prevent it from being included in the link. */
+ h->call_fp_stub->_raw_size = 0;
+ h->call_fp_stub->_cooked_size = 0;
+ h->call_fp_stub->flags &= ~ SEC_RELOC;
+ h->call_fp_stub->reloc_count = 0;
+ h->call_fp_stub->flags |= SEC_EXCLUDE;
+ }
+
+ return true;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static boolean
+mips_elf_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *s;
+ boolean reltext;
+ asection *sgot;
+ struct mips_got_info *g;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+
+ /* Recompute the size of .got for local entires (reserved and
+ hipages) if needed. To estimate it, get the upper bound of total
+ size of loadable sections. */
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+
+ if (sgot != NULL)
+ {
+ bfd_size_type loadable_size = 0;
+ bfd_size_type local_gotno;
+ struct _bfd *sub;
+
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+
+ for (sub = info->input_bfds; sub; sub = sub->link_next)
+ for (s = sub->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_ALLOC) == 0)
+ continue;
+ loadable_size += (s->_raw_size + 0xf) & ~0xf;
+ }
+
+ loadable_size += MIPS_FUNCTION_STUB_SIZE;
+
+ /* Assume there are two loadable segments consisting of
+ contiguous sections. Is 5 enough? */
+ local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO;
+ g->local_gotno = local_gotno;
+ sgot->_raw_size += local_gotno * 4;
+ }
+
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ reltext = false;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char *name;
+ boolean strip;
+
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
+
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ strip = false;
+
+ if (strncmp (name, ".rel", 4) == 0)
+ {
+ if (s->_raw_size == 0)
+ strip = true;
+ else
+ {
+ const char *outname;
+ asection *target;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL entry.
+ If the relocation section is .rel.dyn, we always
+ assert a DT_TEXTREL entry rather than testing whether
+ there exists a relocation to a read only section or
+ not. */
+ outname = bfd_get_section_name (output_bfd,
+ s->output_section);
+ target = bfd_get_section_by_name (output_bfd, outname + 4);
+ if ((target != NULL
+ && (target->flags & SEC_READONLY) != 0
+ && (target->flags & SEC_ALLOC) != 0)
+ || strcmp (outname, ".rel.dyn") == 0)
+ reltext = true;
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ if (strcmp (name, ".rel.dyn") != 0)
+ s->reloc_count = 0;
+ }
+ }
+ else if (strncmp (name, ".got", 4) == 0)
+ {
+ int i;
+
+ BFD_ASSERT (elf_section_data (s) != NULL);
+ g = (struct mips_got_info *) elf_section_data (s)->tdata;
+ BFD_ASSERT (g != NULL);
+
+ /* Fix the size of .got section for the correspondence of
+ global symbols and got entries. This adds some useless
+ got entries. Is this required by ABI really? */
+ i = elf_hash_table (info)->dynsymcount - g->global_gotsym;
+ s->_raw_size += i * 4;
+ }
+ else if (strncmp (name, ".stub", 5) == 0)
+ {
+ /* Irix rld assumes that the function stub isn't at the end
+ of .text section. So put a dummy. XXX */
+ s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
+ }
+ else if (! info->shared
+ && ! mips_elf_hash_table (info)->use_rld_obj_head
+ && strncmp (name, ".rld_map", 8) == 0)
+ {
+ /* We add a room for __rld_map. It will be filled in by the
+ rtld to contain a pointer to the _r_debug structure. */
+ s->_raw_size += 4;
+ }
+ else if (SGI_COMPAT (output_bfd)
+ && strncmp (name, ".compact_rel", 12) == 0)
+ s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
+ else if (strncmp (name, ".init", 5) != 0)
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (strip)
+ {
+ asection **spp;
+
+ for (spp = &s->output_section->owner->sections;
+ *spp != s->output_section;
+ spp = &(*spp)->next)
+ ;
+ *spp = s->output_section->next;
+ --s->output_section->owner->section_count;
+
+ continue;
+ }
+
+ /* Allocate memory for the section contents. */
+ s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memset (s->contents, 0, s->_raw_size);
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf_mips_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+ if (! info->shared)
+ {
+ if (SGI_COMPAT (output_bfd))
+ {
+ /* SGI object has the equivalence of DT_DEBUG in the
+ DT_MIPS_RLD_MAP entry. */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0))
+ return false;
+ }
+ else
+ if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
+ return false;
+ }
+
+ if (reltext)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return false;
+ }
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
+ return false;
+
+ if (bfd_get_section_by_name (dynobj, ".rel.dyn"))
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0))
+ return false;
+ }
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0))
+ return false;
+
+ if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0))
+ return false;
+
+ s = bfd_get_section_by_name (dynobj, ".liblist");
+ BFD_ASSERT (s != NULL);
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0))
+ return false;
+ }
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0))
+ return false;
+
+#if 0
+ /* Time stamps in executable files are a bad idea. */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0))
+ return false;
+#endif
+
+#if 0 /* FIXME */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0))
+ return false;
+#endif
+
+#if 0 /* FIXME */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0))
+ return false;
+#endif
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0))
+ return false;
+
+ if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0))
+ return false;
+
+#if 0 /* (SGI_COMPAT) */
+ if (! bfd_get_section_by_name (dynobj, ".init"))
+ if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0))
+ return false;
+
+ if (! bfd_get_section_by_name (dynobj, ".fini"))
+ if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0))
+ return false;
+#endif
+ }
+
+ /* If we use dynamic linking, we generate a section symbol for each
+ output section. These are local symbols, which means that they
+ must come first in the dynamic symbol table.
+ That means we must increment the dynamic symbol index of every
+ other dynamic symbol. */
+ {
+ const char * const *namep;
+ unsigned int c, i;
+ bfd_size_type strindex;
+ struct bfd_strtab_hash *dynstr;
+ struct mips_got_info *g;
+
+ c = 0;
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ if (SGI_COMPAT (output_bfd))
+ {
+ c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1;
+ elf_link_hash_traverse (elf_hash_table (info),
+ mips_elf_adjust_dynindx,
+ (PTR) &c);
+ elf_hash_table (info)->dynsymcount += c;
+
+ dynstr = elf_hash_table (info)->dynstr;
+ BFD_ASSERT (dynstr != NULL);
+
+ for (i = 1, namep = mips_elf_dynsym_sec_names;
+ *namep != NULL;
+ i++, namep++)
{
- const char *name;
+ s = bfd_get_section_by_name (output_bfd, *namep);
+ if (s != NULL)
+ elf_section_data (s)->dynindx = i;
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- return false;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
+ strindex = _bfd_stringtab_add (dynstr, *namep, true, false);
+ if (strindex == (bfd_size_type) -1)
return false;
+
+ mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex;
}
+ }
+ else
+ {
+ c = bfd_count_sections (output_bfd);
+ elf_link_hash_traverse (elf_hash_table (info),
+ mips_elf_adjust_dynindx,
+ (PTR) &c);
+ elf_hash_table (info)->dynsymcount += c;
+
+ for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
+ {
+ elf_section_data (s)->dynindx = i;
+ /* These symbols will have no names, so we don't need to
+ fiddle with dynstr_index. */
+ }
+ }
+ }
+
+ if (sgot != NULL)
+ {
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+
+ /* If there are no global got symbols, fake the last symbol so
+ for safety. */
+ if (g->global_gotsym)
+ g->global_gotsym += c;
+ else
+ g->global_gotsym = elf_hash_table (info)->dynsymcount - 1;
+ }
+ }
+
+ return true;
+}
+
+/* Increment the index of a dynamic symbol by a given amount. Called
+ via elf_link_hash_traverse. */
+
+static boolean
+mips_elf_adjust_dynindx (h, cparg)
+ struct elf_link_hash_entry *h;
+ PTR cparg;
+{
+ unsigned int *cp = (unsigned int *) cparg;
+
+ if (h->dynindx != -1)
+ h->dynindx += *cp;
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static boolean
+mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ bfd *dynobj;
+ bfd_vma gval;
+ asection *sgot;
+ struct mips_got_info *g;
+ const char *name;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ gval = sym->st_value;
+
+ if (h->plt_offset != (bfd_vma) -1)
+ {
+ asection *s;
+ bfd_byte *p;
+ bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
+
+ /* This symbol has a stub. Set it up. */
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ s = bfd_get_section_by_name (dynobj, ".stub");
+ BFD_ASSERT (s != NULL);
+
+ /* Fill the stub. */
+ p = stub;
+ bfd_put_32 (output_bfd, STUB_LW(output_bfd), p);
+ p += 4;
+ bfd_put_32 (output_bfd, STUB_MOVE, p);
+ p += 4;
+
+ /* FIXME: Can h->dynindex be more than 64K? */
+ if (h->dynindx & 0xffff0000)
+ return false;
+
+ bfd_put_32 (output_bfd, STUB_JALR, p);
+ p += 4;
+ bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p);
+
+ BFD_ASSERT (h->plt_offset <= s->_raw_size);
+ memcpy (s->contents + h->plt_offset, stub, MIPS_FUNCTION_STUB_SIZE);
+
+ /* Mark the symbol as undefined. plt_offset != -1 occurs
+ only for the referenced symbol. */
+ sym->st_shndx = SHN_UNDEF;
+
+ /* The run-time linker uses the st_value field of the symbol
+ to reset the global offset table entry for this external
+ to its stub address when unlinking a shared object. */
+ gval = s->output_section->vma + s->output_offset + h->plt_offset;
+ sym->st_value = gval;
+ }
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+
+ if ((unsigned long) h->dynindx >= g->global_gotsym)
+ {
+ bfd_size_type offset;
+
+ /* This symbol has an entry in the global offset table. Set its
+ value to the corresponding got entry, if needed. */
+ if (h->got_offset == (bfd_vma) -1)
+ {
+ offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
+ BFD_ASSERT (g->local_gotno * 4 <= offset
+ && offset < sgot->_raw_size);
+ bfd_put_32 (output_bfd, gval, sgot->contents + offset);
+ }
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ name = h->root.root.string;
+ if (strcmp (name, "_DYNAMIC") == 0
+ || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+ else if (strcmp (name, "_DYNAMIC_LINK") == 0)
+ {
+ sym->st_shndx = SHN_ABS;
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ sym->st_value = 1;
+ }
+ else if (SGI_COMPAT (output_bfd))
+ {
+ if (strcmp (name, "_gp_disp") == 0)
+ {
+ sym->st_shndx = SHN_ABS;
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ sym->st_value = elf_gp (output_bfd);
+ }
+ else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
+ || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
+ {
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ sym->st_other = STO_PROTECTED;
+ sym->st_value = 0;
+ sym->st_shndx = SHN_MIPS_DATA;
+ }
+ else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0)
+ {
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ sym->st_other = STO_PROTECTED;
+ sym->st_value = mips_elf_hash_table (info)->procedure_count;
+ sym->st_shndx = SHN_ABS;
+ }
+ else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
+ {
+ if (h->type == STT_FUNC)
+ sym->st_shndx = SHN_MIPS_TEXT;
+ else if (h->type == STT_OBJECT)
+ sym->st_shndx = SHN_MIPS_DATA;
+ }
+ }
+
+ if (SGI_COMPAT (output_bfd)
+ && ! info->shared)
+ {
+ if (! mips_elf_hash_table (info)->use_rld_obj_head
+ && strcmp (name, "__rld_map") == 0)
+ {
+ asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
+ BFD_ASSERT (s != NULL);
+ sym->st_value = s->output_section->vma + s->output_offset;
+ bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents);
+ if (mips_elf_hash_table (info)->rld_value == 0)
+ mips_elf_hash_table (info)->rld_value = sym->st_value;
+ }
+ else if (mips_elf_hash_table (info)->use_rld_obj_head
+ && strcmp (name, "__rld_obj_head") == 0)
+ {
+ asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
+ BFD_ASSERT (s != NULL);
+ mips_elf_hash_table (info)->rld_value = sym->st_value;
+ }
+ }
+
+ /* If this is a mips16 symbol, force the value to be even. */
+ if (sym->st_other == STO_MIPS16
+ && (sym->st_value & 1) != 0)
+ --sym->st_value;
+
+ return true;
+}
+
+/* Finish up the dynamic sections. */
+
+static boolean
+mips_elf_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *sdyn;
+ asection *sgot;
+ struct mips_got_info *g;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ if (sgot == NULL)
+ g = NULL;
+ else
+ {
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ Elf32_External_Dyn *dyncon, *dynconend;
+
+ BFD_ASSERT (sdyn != NULL);
+ BFD_ASSERT (g != NULL);
+
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ size_t elemsize;
+ asection *s;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_RELENT:
+ s = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_val = sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_STRSZ:
+ /* Rewrite DT_STRSZ. */
+ dyn.d_un.d_val =
+ _bfd_stringtab_size (elf_hash_table (info)->dynstr);
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTGOT:
+ name = ".got";
+ goto get_vma;
+ case DT_MIPS_CONFLICT:
+ name = ".conflict";
+ goto get_vma;
+ case DT_MIPS_LIBLIST:
+ name = ".liblist";
+ get_vma:
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_ptr = s->vma;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_RLD_VERSION:
+ dyn.d_un.d_val = 1; /* XXX */
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_FLAGS:
+ dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_CONFLICTNO:
+ name = ".conflict";
+ elemsize = sizeof (Elf32_Conflict);
+ goto set_elemno;
+
+ case DT_MIPS_LIBLISTNO:
+ name = ".liblist";
+ elemsize = sizeof (Elf32_Lib);
+ set_elemno:
+ s = bfd_get_section_by_name (output_bfd, name);
+ if (s != NULL)
+ {
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size / elemsize;
+ else
+ dyn.d_un.d_val = s->_raw_size / elemsize;
+ }
+ else
+ dyn.d_un.d_val = 0;
+
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_TIME_STAMP:
+ time ((time_t *) &dyn.d_un.d_val);
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_ICHECKSUM:
+ /* XXX FIXME: */
+ break;
+
+ case DT_MIPS_IVERSION:
+ /* XXX FIXME: */
+ break;
+
+ case DT_MIPS_BASE_ADDRESS:
+ s = output_bfd->sections;
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_ptr = s->vma & ~(0xffff);
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_LOCAL_GOTNO:
+ dyn.d_un.d_val = g->local_gotno;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_SYMTABNO:
+ name = ".dynsym";
+ elemsize = sizeof (Elf32_External_Sym);
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size / elemsize;
+ else
+ dyn.d_un.d_val = s->_raw_size / elemsize;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_UNREFEXTNO:
+ /* XXX FIXME: */
+ dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_GOTSYM:
+ dyn.d_un.d_val = g->global_gotsym;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_HIPAGENO:
+ dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_MIPS_RLD_MAP:
+ dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
+
}
}
}
+ /* The first entry of the global offset table will be filled at
+ runtime. The second entry will be used by some runtime loaders.
+ This isn't the case of Irix rld. */
+ if (sgot != NULL && sgot->_raw_size > 0)
+ {
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4);
+ }
+
+ if (sgot != NULL)
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+
+ {
+ asection *sdynsym;
+ asection *s;
+ unsigned int i;
+ bfd_vma last;
+ Elf_Internal_Sym sym;
+ long dindx;
+ const char *name;
+ const char * const * namep = mips_elf_dynsym_sec_names;
+ Elf32_compact_rel cpt;
+
+ /* Set up the section symbols for the output sections. SGI sets
+ the STT_NOTYPE attribute for these symbols. Should we do so? */
+
+ sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
+ if (sdynsym != NULL)
+ {
+ if (SGI_COMPAT (output_bfd))
+ {
+ sym.st_size = 0;
+ sym.st_name = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
+ sym.st_other = 0;
+
+ i = 0;
+ while ((name = *namep++) != NULL)
+ {
+ s = bfd_get_section_by_name (output_bfd, name);
+ if (s != NULL)
+ {
+ sym.st_value = s->vma;
+ dindx = elf_section_data (s)->dynindx;
+ last = s->vma + s->_raw_size;
+ }
+ else
+ {
+ sym.st_value = last;
+ dindx++;
+ }
+
+ sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO
+ ? SHN_MIPS_TEXT
+ : SHN_MIPS_DATA);
+ ++i;
+ sym.st_name =
+ mips_elf_hash_table (info)->dynsym_sec_strindex[dindx];
+
+ bfd_elf32_swap_symbol_out (output_bfd, &sym,
+ (((Elf32_External_Sym *)
+ sdynsym->contents)
+ + dindx));
+ }
+
+ /* Set the sh_info field of the output .dynsym section to
+ the index of the first global symbol. */
+ elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
+ SIZEOF_MIPS_DYNSYM_SECNAMES;
+ }
+ else
+ {
+ sym.st_size = 0;
+ sym.st_name = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ sym.st_other = 0;
+
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ {
+ int indx;
+
+ sym.st_value = s->vma;
+
+ indx = elf_section_data (s)->this_idx;
+ BFD_ASSERT (indx > 0);
+ sym.st_shndx = indx;
+
+ bfd_elf32_swap_symbol_out (output_bfd, &sym,
+ (((Elf32_External_Sym *)
+ sdynsym->contents)
+ + elf_section_data (s)->dynindx));
+ }
+
+ /* Set the sh_info field of the output .dynsym section to
+ the index of the first global symbol. */
+ elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
+ bfd_count_sections (output_bfd) + 1;
+ }
+ }
+
+ if (SGI_COMPAT (output_bfd))
+ {
+ /* Write .compact_rel section out. */
+ s = bfd_get_section_by_name (dynobj, ".compact_rel");
+ if (s != NULL)
+ {
+ cpt.id1 = 1;
+ cpt.num = s->reloc_count;
+ cpt.id2 = 2;
+ cpt.offset = (s->output_section->filepos
+ + sizeof (Elf32_External_compact_rel));
+ cpt.reserved0 = 0;
+ cpt.reserved1 = 0;
+ bfd_elf32_swap_compact_rel_out (output_bfd, &cpt,
+ ((Elf32_External_compact_rel *)
+ s->contents));
+
+ /* Clean up a dummy stub function entry in .text. */
+ s = bfd_get_section_by_name (dynobj, ".stub");
+ if (s != NULL)
+ {
+ file_ptr dummy_offset;
+
+ BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE);
+ dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE;
+ memset (s->contents + dummy_offset, 0,
+ MIPS_FUNCTION_STUB_SIZE);
+ }
+ }
+ }
+
+ /* Clean up a first relocation in .rel.dyn. */
+ s = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ if (s != NULL && s->_raw_size > 0)
+ memset (s->contents, 0, sizeof (Elf32_External_Rel));
+ }
+
return true;
}
\f
+/* This is almost identical to bfd_generic_get_... except that some
+ MIPS relocations need to be handled specially. Sigh. */
+
+static bfd_byte *
+elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data,
+ relocateable, symbols)
+ bfd *abfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ bfd_byte *data;
+ boolean relocateable;
+ asymbol **symbols;
+{
+ /* Get enough memory to hold the stuff */
+ bfd *input_bfd = link_order->u.indirect.section->owner;
+ asection *input_section = link_order->u.indirect.section;
+
+ long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
+ arelent **reloc_vector = NULL;
+ long reloc_count;
+
+ if (reloc_size < 0)
+ goto error_return;
+
+ reloc_vector = (arelent **) bfd_malloc (reloc_size);
+ if (reloc_vector == NULL && reloc_size != 0)
+ goto error_return;
+
+ /* read in the section */
+ if (!bfd_get_section_contents (input_bfd,
+ input_section,
+ (PTR) data,
+ 0,
+ input_section->_raw_size))
+ goto error_return;
+
+ /* We're not relaxing the section, so just copy the size info */
+ input_section->_cooked_size = input_section->_raw_size;
+ input_section->reloc_done = true;
+
+ reloc_count = bfd_canonicalize_reloc (input_bfd,
+ input_section,
+ reloc_vector,
+ symbols);
+ if (reloc_count < 0)
+ goto error_return;
+
+ if (reloc_count > 0)
+ {
+ arelent **parent;
+ /* for mips */
+ int gp_found;
+ bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */
+
+ {
+ struct bfd_hash_entry *h;
+ struct bfd_link_hash_entry *lh;
+ /* Skip all this stuff if we aren't mixing formats. */
+ if (abfd && input_bfd
+ && abfd->xvec == input_bfd->xvec)
+ lh = 0;
+ else
+ {
+ h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false);
+ lh = (struct bfd_link_hash_entry *) h;
+ }
+ lookup:
+ if (lh)
+ {
+ switch (lh->type)
+ {
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_undefweak:
+ case bfd_link_hash_common:
+ gp_found = 0;
+ break;
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ gp_found = 1;
+ gp = lh->u.def.value;
+ break;
+ case bfd_link_hash_indirect:
+ case bfd_link_hash_warning:
+ lh = lh->u.i.link;
+ /* @@FIXME ignoring warning for now */
+ goto lookup;
+ case bfd_link_hash_new:
+ default:
+ abort ();
+ }
+ }
+ else
+ gp_found = 0;
+ }
+ /* end mips */
+ for (parent = reloc_vector; *parent != (arelent *) NULL;
+ parent++)
+ {
+ char *error_message = (char *) NULL;
+ bfd_reloc_status_type r;
+
+ /* Specific to MIPS: Deal with relocation types that require
+ knowing the gp of the output bfd. */
+ asymbol *sym = *(*parent)->sym_ptr_ptr;
+ if (bfd_is_abs_section (sym->section) && abfd)
+ {
+ /* The special_function wouldn't get called anyways. */
+ }
+ else if (!gp_found)
+ {
+ /* The gp isn't there; let the special function code
+ fall over on its own. */
+ }
+ else if ((*parent)->howto->special_function
+ == _bfd_mips_elf_gprel16_reloc)
+ {
+ /* bypass special_function call */
+ r = gprel16_with_gp (input_bfd, sym, *parent, input_section,
+ relocateable, (PTR) data, gp);
+ goto skip_bfd_perform_relocation;
+ }
+ /* end mips specific stuff */
+
+ r = bfd_perform_relocation (input_bfd,
+ *parent,
+ (PTR) data,
+ input_section,
+ relocateable ? abfd : (bfd *) NULL,
+ &error_message);
+ skip_bfd_perform_relocation:
+
+ if (relocateable)
+ {
+ asection *os = input_section->output_section;
+
+ /* A partial link, so keep the relocs */
+ os->orelocation[os->reloc_count] = *parent;
+ os->reloc_count++;
+ }
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ case bfd_reloc_undefined:
+ if (!((*link_info->callbacks->undefined_symbol)
+ (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
+ input_bfd, input_section, (*parent)->address)))
+ goto error_return;
+ break;
+ case bfd_reloc_dangerous:
+ BFD_ASSERT (error_message != (char *) NULL);
+ if (!((*link_info->callbacks->reloc_dangerous)
+ (link_info, error_message, input_bfd, input_section,
+ (*parent)->address)))
+ goto error_return;
+ break;
+ case bfd_reloc_overflow:
+ if (!((*link_info->callbacks->reloc_overflow)
+ (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
+ (*parent)->howto->name, (*parent)->addend,
+ input_bfd, input_section, (*parent)->address)))
+ goto error_return;
+ break;
+ case bfd_reloc_outofrange:
+ default:
+ abort ();
+ break;
+ }
+
+ }
+ }
+ }
+ if (reloc_vector != NULL)
+ free (reloc_vector);
+ return data;
+
+error_return:
+ if (reloc_vector != NULL)
+ free (reloc_vector);
+ return NULL;
+}
+#define bfd_elf32_bfd_get_relocated_section_contents \
+ elf32_mips_get_relocated_section_contents
+\f
/* ECOFF swapping routines. These are used when dealing with the
.mdebug section, which is in the ECOFF debugging format. */
-static const struct ecoff_debug_swap mips_elf_ecoff_debug_swap =
+static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap =
{
/* Symbol table magic number. */
magicSym,
_bfd_ecoff_swap_tir_out,
_bfd_ecoff_swap_rndx_out,
/* Function to read in symbolic data. */
- mips_elf_read_ecoff_info
+ _bfd_mips_elf_read_ecoff_info
};
\f
#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
#define TARGET_BIG_NAME "elf32-bigmips"
#define ELF_ARCH bfd_arch_mips
#define ELF_MACHINE_CODE EM_MIPS
-#define ELF_MAXPAGESIZE 0x10000
+
+/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
+ a value of 0x1000, and we are compatible. */
+#define ELF_MAXPAGESIZE 0x1000
+
#define elf_backend_collect true
+#define elf_backend_type_change_ok true
#define elf_info_to_howto 0
#define elf_info_to_howto_rel mips_info_to_howto_rel
#define elf_backend_sym_is_global mips_elf_sym_is_global
-#define elf_backend_object_p mips_elf_object_p
-#define elf_backend_section_from_shdr mips_elf_section_from_shdr
-#define elf_backend_fake_sections mips_elf_fake_sections
+#define elf_backend_object_p mips_elf32_object_p
+#define elf_backend_section_from_shdr mips_elf32_section_from_shdr
+#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
#define elf_backend_section_from_bfd_section \
- mips_elf_section_from_bfd_section
-#define elf_backend_section_processing mips_elf_section_processing
-#define elf_backend_symbol_processing mips_elf_symbol_processing
+ _bfd_mips_elf_section_from_bfd_section
+#define elf_backend_section_processing mips_elf32_section_processing
+#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
+#define elf_backend_additional_program_headers \
+ mips_elf_additional_program_headers
+#define elf_backend_modify_segment_map mips_elf_modify_segment_map
#define elf_backend_final_write_processing \
- mips_elf_final_write_processing
-#define elf_backend_ecoff_debug_swap &mips_elf_ecoff_debug_swap
+ _bfd_mips_elf_final_write_processing
+#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
+#define bfd_elf32_bfd_is_local_label_name \
+ mips_elf_is_local_label_name
+#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
+#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
#define bfd_elf32_bfd_link_hash_table_create \
mips_elf_link_hash_table_create
#define bfd_elf32_bfd_final_link mips_elf_final_link
-#define elf_backend_relocate_section mips_elf_relocate_section
+#define bfd_elf32_bfd_copy_private_bfd_data \
+ _bfd_mips_elf_copy_private_bfd_data
+#define bfd_elf32_bfd_merge_private_bfd_data \
+ _bfd_mips_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
#define elf_backend_add_symbol_hook mips_elf_add_symbol_hook
+#define elf_backend_create_dynamic_sections \
+ mips_elf_create_dynamic_sections
+#define elf_backend_check_relocs mips_elf_check_relocs
+#define elf_backend_adjust_dynamic_symbol \
+ mips_elf_adjust_dynamic_symbol
+#define elf_backend_always_size_sections \
+ mips_elf_always_size_sections
+#define elf_backend_size_dynamic_sections \
+ mips_elf_size_dynamic_sections
+#define elf_backend_relocate_section mips_elf_relocate_section
+#define elf_backend_link_output_symbol_hook \
+ mips_elf_link_output_symbol_hook
+#define elf_backend_finish_dynamic_symbol \
+ mips_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ mips_elf_finish_dynamic_sections
#include "elf32-target.h"
projects / binutils-gdb.git / blobdiff