/* BFD back-end for MIPS Extended-Coff files.
- Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
Original version by Per Bothner.
Full support added by Ian Lance Taylor, 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. */
#include "bfd.h"
#include "sysdep.h"
+#include "bfdlink.h"
#include "libbfd.h"
-#include "seclet.h"
-#include "aout/ar.h"
-#include "aout/ranlib.h"
-#include "coff/mips.h"
#include "coff/internal.h"
#include "coff/sym.h"
#include "coff/symconst.h"
-#include "coff/ecoff-ext.h"
+#include "coff/ecoff.h"
+#include "coff/mips.h"
#include "libcoff.h"
#include "libecoff.h"
-
-/* Each canonical asymbol really looks like this. */
-
-typedef struct ecoff_symbol_struct
-{
- /* The actual symbol which the rest of BFD works with */
- asymbol symbol;
-
- /* The fdr for this symbol. */
- FDR *fdr;
-
- /* true if this is a local symbol rather than an external one. */
- boolean local;
-
- /* A pointer to the unswapped hidden information for this symbol */
- union
- {
- struct sym_ext *lnative;
- struct ext_ext *enative;
- }
- native;
-} ecoff_symbol_type;
-
-/* We take the address of the first element of a asymbol to ensure that the
- macro is only ever applied to an asymbol. */
-#define ecoffsymbol(asymbol) ((ecoff_symbol_type *) (&((asymbol)->the_bfd)))
-
-/* The page boundary used to align sections in the executable file. */
-#define ROUND_SIZE 0x1000
-
-/* The linker needs a section to hold small common variables while
- linking. There is no convenient way to create it when the linker
- needs it, so we always create one for each BFD. We then avoid
- writing it out. */
-#define SCOMMON ".scommon"
-
-/* MIPS ECOFF has COFF sections, but the debugging information is
- stored in a completely different format. This files uses the some
- of the swapping routines from coffswap.h, and some of the generic
- COFF routines in coffgen.c, but, unlike the real COFF targets, does
- not use coffcode.h itself. */
\f
/* Prototypes for static functions. */
-static boolean ecoff_bad_format_hook PARAMS ((bfd *abfd, PTR filehdr));
-static asection *ecoff_make_section_hook PARAMS ((bfd *abfd, char *name));
-static boolean ecoff_new_section_hook PARAMS ((bfd *abfd, asection *section));
-static boolean ecoff_mkobject PARAMS ((bfd *abfd));
-static PTR ecoff_mkobject_hook PARAMS ((bfd *abfd, PTR filehdr, PTR aouthdr));
-static boolean ecoff_set_arch_mach_hook PARAMS ((bfd *abfd, PTR filehdr));
-static long ecoff_sec_to_styp_flags PARAMS ((CONST char *name,
- flagword flags));
-static flagword ecoff_styp_to_sec_flags PARAMS ((bfd *abfd, PTR hdr));
-static asymbol *ecoff_make_empty_symbol PARAMS ((bfd *abfd));
-static void ecoff_set_symbol_info PARAMS ((bfd *abfd, SYMR *ecoff_sym,
- asymbol *asym, int ext));
-static boolean ecoff_slurp_symbol_table PARAMS ((bfd *abfd));
-static unsigned int ecoff_get_symtab_upper_bound PARAMS ((bfd *abfd));
-static unsigned int ecoff_get_symtab PARAMS ((bfd *abfd,
- asymbol **alocation));
-static void ecoff_emit_aggregate PARAMS ((bfd *abfd, char *string,
- RNDXR *rndx, long isym,
- CONST char *which));
-static char *ecoff_type_to_string PARAMS ((bfd *abfd, union aux_ext *aux_ptr,
- int indx, int bigendian));
-static void ecoff_print_symbol PARAMS ((bfd *abfd, PTR filep,
- asymbol *symbol,
- bfd_print_symbol_type how));
-static void ecoff_swap_reloc_in PARAMS ((bfd *abfd, RELOC *ext,
- struct internal_reloc *intern));
-static unsigned int ecoff_swap_reloc_out PARAMS ((bfd *abfd, PTR src,
- PTR dst));
-static bfd_reloc_status_type ecoff_generic_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd));
-static bfd_reloc_status_type ecoff_refhi_reloc PARAMS ((bfd *abfd,
+static boolean mips_ecoff_bad_format_hook PARAMS ((bfd *abfd, PTR filehdr));
+static void mips_ecoff_swap_reloc_in PARAMS ((bfd *, PTR,
+ struct internal_reloc *));
+static void mips_ecoff_swap_reloc_out PARAMS ((bfd *,
+ const struct internal_reloc *,
+ PTR));
+static void mips_adjust_reloc_in PARAMS ((bfd *,
+ const struct internal_reloc *,
+ arelent *));
+static void mips_adjust_reloc_out PARAMS ((bfd *, const arelent *,
+ struct internal_reloc *));
+static bfd_reloc_status_type mips_generic_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_refhi_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_reflo_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_gprel_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_relhi_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_rello_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *section,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type mips_switch_reloc PARAMS ((bfd *abfd,
arelent *reloc,
asymbol *symbol,
PTR data,
asection *section,
- bfd *output_bfd));
-static bfd_reloc_status_type ecoff_reflo_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd));
-static bfd_reloc_status_type ecoff_gprel_reloc PARAMS ((bfd *abfd,
- arelent *reloc,
- asymbol *symbol,
- PTR data,
- asection *section,
- bfd *output_bfd));
-static boolean ecoff_slurp_reloc_table PARAMS ((bfd *abfd, asection *section,
- asymbol **symbols));
-static unsigned int ecoff_canonicalize_reloc PARAMS ((bfd *abfd,
- asection *section,
- arelent **relptr,
- asymbol **symbols));
-static CONST struct reloc_howto_struct *ecoff_bfd_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static boolean ecoff_find_nearest_line PARAMS ((bfd *abfd,
- asection *section,
- asymbol **symbols,
- bfd_vma offset,
- CONST char **filename_ptr,
- CONST char **fnname_ptr,
- unsigned int *retline_ptr));
-static void ecoff_clear_output_flags PARAMS ((bfd *abfd));
-static boolean ecoff_rel PARAMS ((bfd *output_bfd, bfd_seclet_type *seclet,
- asection *output_section, PTR data,
- boolean relocateable));
-static boolean ecoff_dump_seclet PARAMS ((bfd *abfd, bfd_seclet_type *seclet,
- asection *section, PTR data,
- boolean relocateable));
-static long ecoff_add_string PARAMS ((bfd *output_bfd, FDR *fdr,
- CONST char *string, boolean external));
-static boolean ecoff_get_debug PARAMS ((bfd *output_bfd,
- bfd_seclet_type *seclet,
- asection *section,
- boolean relocateable));
-static boolean ecoff_bfd_seclet_link PARAMS ((bfd *abfd, PTR data,
- boolean relocateable));
-static boolean ecoff_set_arch_mach PARAMS ((bfd *abfd,
- enum bfd_architecture arch,
- unsigned long machine));
-static int ecoff_sizeof_headers PARAMS ((bfd *abfd, boolean reloc));
-static void ecoff_compute_section_file_positions PARAMS ((bfd *abfd));
-static boolean ecoff_set_section_contents PARAMS ((bfd *abfd,
- asection *section,
- PTR location,
- file_ptr offset,
- bfd_size_type count));
-static boolean ecoff_write_object_contents PARAMS ((bfd *abfd));
-static unsigned int ecoff_armap_hash PARAMS ((CONST char *s,
- unsigned int *rehash,
- unsigned int size,
- unsigned int hlog));
-static boolean ecoff_slurp_armap PARAMS ((bfd *abfd));
-static boolean ecoff_write_armap PARAMS ((bfd *abfd, unsigned int elength,
- struct orl *map,
- unsigned int orl_count,
- int stridx));
-static bfd_target *ecoff_archive_p PARAMS ((bfd *abfd));
+ bfd *output_bfd,
+ char **error));
+static void mips_relocate_hi PARAMS ((struct internal_reloc *refhi,
+ struct internal_reloc *reflo,
+ bfd *input_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ size_t adjust,
+ bfd_vma relocation,
+ boolean pcrel));
+static boolean mips_relocate_section PARAMS ((bfd *, struct bfd_link_info *,
+ bfd *, asection *,
+ bfd_byte *, PTR));
+static boolean mips_read_relocs PARAMS ((bfd *, asection *));
+static boolean mips_relax_section PARAMS ((bfd *, asection *,
+ struct bfd_link_info *,
+ boolean *));
+static boolean mips_relax_pcrel16 PARAMS ((struct bfd_link_info *, bfd *,
+ asection *,
+ struct ecoff_link_hash_entry *,
+ bfd_byte *, bfd_vma));
+static reloc_howto_type *mips_bfd_reloc_type_lookup
+ PARAMS ((bfd *, bfd_reloc_code_real_type));
+
\f
-/* Get the generic COFF swapping routines, except for the reloc,
- symbol, and lineno ones. Give them ecoff names. */
+/* ECOFF has COFF sections, but the debugging information is stored in
+ a completely different format. ECOFF targets use some of the
+ swapping routines from coffswap.h, and some of the generic COFF
+ routines in coffgen.c, but, unlike the real COFF targets, do not
+ use coffcode.h itself.
+
+ Get the generic COFF swapping routines, except for the reloc,
+ symbol, and lineno ones. Give them ECOFF names. */
#define MIPSECOFF
#define NO_COFF_RELOCS
#define NO_COFF_SYMBOLS
#define NO_COFF_LINENOS
-#define coff_swap_filehdr_in ecoff_swap_filehdr_in
-#define coff_swap_filehdr_out ecoff_swap_filehdr_out
-#define coff_swap_aouthdr_in ecoff_swap_aouthdr_in
-#define coff_swap_aouthdr_out ecoff_swap_aouthdr_out
-#define coff_swap_scnhdr_in ecoff_swap_scnhdr_in
-#define coff_swap_scnhdr_out ecoff_swap_scnhdr_out
+#define coff_swap_filehdr_in mips_ecoff_swap_filehdr_in
+#define coff_swap_filehdr_out mips_ecoff_swap_filehdr_out
+#define coff_swap_aouthdr_in mips_ecoff_swap_aouthdr_in
+#define coff_swap_aouthdr_out mips_ecoff_swap_aouthdr_out
+#define coff_swap_scnhdr_in mips_ecoff_swap_scnhdr_in
+#define coff_swap_scnhdr_out mips_ecoff_swap_scnhdr_out
#include "coffswap.h"
-\f
-/* This stuff is somewhat copied from coffcode.h. */
-
-static asection bfd_debug_section = { "*DEBUG*" };
-
-/* See whether the magic number matches. */
-
-static boolean
-ecoff_bad_format_hook (abfd, filehdr)
- bfd *abfd;
- PTR filehdr;
-{
- struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
-
- if (ECOFFBADMAG (*internal_f))
- return false;
-
- return true;
-}
-
-/* This is a hook needed by SCO COFF, but we have nothing to do. */
-
-static asection *
-ecoff_make_section_hook (abfd, name)
- bfd *abfd;
- char *name;
-{
- return (asection *) NULL;
-}
-
-/* Initialize a new section. */
-
-static boolean
-ecoff_new_section_hook (abfd, section)
- bfd *abfd;
- asection *section;
-{
- section->alignment_power = abfd->xvec->align_power_min;
-
- if (strcmp (section->name, _TEXT) == 0)
- section->flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
- else if (strcmp (section->name, _DATA) == 0
- || strcmp (section->name, _SDATA) == 0)
- section->flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
- else if (strcmp (section->name, _RDATA) == 0
- || strcmp (section->name, _LIT8) == 0
- || strcmp (section->name, _LIT4) == 0)
- section->flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
- else if (strcmp (section->name, _BSS) == 0
- || strcmp (section->name, _SBSS) == 0)
- section->flags |= SEC_ALLOC;
-
- /* Probably any other section name is SEC_NEVER_LOAD, but I'm
- uncertain about .init on some systems and I don't know how shared
- libraries work. */
-
- return true;
-}
-
-/* Set the alignment of a section; we have nothing to do. */
-
-#define ecoff_set_alignment_hook \
- ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
-
-/* Create an ECOFF object. */
-
-static boolean
-ecoff_mkobject (abfd)
- bfd *abfd;
-{
- abfd->tdata.ecoff_obj_data = ((struct ecoff_tdata *)
- bfd_zalloc (abfd, sizeof (ecoff_data_type)));
- if (abfd->tdata.ecoff_obj_data == NULL)
- {
- bfd_error = no_memory;
- return false;
- }
- /* Always create a .scommon section for every BFD. This is a hack so
- that the linker has something to attach scSCommon symbols to. */
- bfd_make_section (abfd, SCOMMON);
-
- return true;
-}
-
-/* Create the ECOFF backend specific information. */
-
-static PTR
-ecoff_mkobject_hook (abfd, filehdr, aouthdr)
- bfd *abfd;
- PTR filehdr;
- PTR aouthdr;
-{
- struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
- struct internal_aouthdr *internal_a = (struct internal_aouthdr *) aouthdr;
- ecoff_data_type *ecoff;
-
- if (ecoff_mkobject (abfd) == false)
- return NULL;
-
- ecoff = ecoff_data (abfd);
- ecoff->gp_size = 8;
- ecoff->sym_filepos = internal_f->f_symptr;
-
- if (internal_a != (struct internal_aouthdr *) NULL)
- {
- int i;
-
- ecoff->text_start = internal_a->text_start;
- ecoff->text_end = internal_a->text_start + internal_a->tsize;
- ecoff->gp = internal_a->gp_value;
- ecoff->gprmask = internal_a->gprmask;
- for (i = 0; i < 4; i++)
- ecoff->cprmask[i] = internal_a->cprmask[i];
- }
-
- return (PTR) ecoff;
-}
-
-/* Determine the machine architecture and type. */
-
-static boolean
-ecoff_set_arch_mach_hook (abfd, filehdr)
- bfd *abfd;
- PTR filehdr;
-{
- struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
- enum bfd_architecture arch;
-
- switch (internal_f->f_magic)
- {
- case MIPS_MAGIC_1:
- case MIPS_MAGIC_LITTLE:
- case MIPS_MAGIC_BIG:
- arch = bfd_arch_mips;
- break;
-
- default:
- arch = bfd_arch_obscure;
- break;
- }
-
- bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0);
-
- return true;
-}
-
-/* Get the section s_flags to use for a section. */
-
-static long
-ecoff_sec_to_styp_flags (name, flags)
- CONST char *name;
- flagword flags;
-{
- long styp;
-
- styp = 0;
-
- if (strcmp (name, _TEXT) == 0)
- styp = STYP_TEXT;
- else if (strcmp (name, _DATA) == 0)
- styp = STYP_DATA;
- else if (strcmp (name, _SDATA) == 0)
- styp = STYP_SDATA;
- else if (strcmp (name, _RDATA) == 0)
- styp = STYP_RDATA;
- else if (strcmp (name, _LIT8) == 0)
- styp = STYP_LIT8;
- else if (strcmp (name, _LIT4) == 0)
- styp = STYP_LIT4;
- else if (strcmp (name, _BSS) == 0)
- styp = STYP_BSS;
- else if (strcmp (name, _SBSS) == 0)
- styp = STYP_SBSS;
- else if (flags & SEC_CODE)
- styp = STYP_TEXT;
- else if (flags & SEC_DATA)
- styp = STYP_DATA;
- else if (flags & SEC_READONLY)
- styp = STYP_RDATA;
- else if (flags & SEC_LOAD)
- styp = STYP_TEXT;
- else
- styp = STYP_BSS;
-
- if (flags & SEC_NEVER_LOAD)
- styp |= STYP_NOLOAD;
-
- return styp;
-}
-
-/* Get the BFD flags to use for a section. */
-
-static flagword
-ecoff_styp_to_sec_flags (abfd, hdr)
- bfd *abfd;
- PTR hdr;
-{
- struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
- long styp_flags = internal_s->s_flags;
- flagword sec_flags=0;
-
- if (styp_flags & STYP_NOLOAD)
- sec_flags |= SEC_NEVER_LOAD;
-
- /* For 386 COFF, at least, an unloadable text or data section is
- actually a shared library section. */
- if (styp_flags & STYP_TEXT)
- {
- if (sec_flags & SEC_NEVER_LOAD)
- sec_flags |= SEC_CODE | SEC_SHARED_LIBRARY;
- else
- sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
- }
- else if ((styp_flags & STYP_DATA)
- || (styp_flags & STYP_RDATA)
- || (styp_flags & STYP_SDATA))
- {
- if (sec_flags & SEC_NEVER_LOAD)
- sec_flags |= SEC_DATA | SEC_SHARED_LIBRARY;
- else
- sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
- if (styp_flags & STYP_RDATA)
- sec_flags |= SEC_READONLY;
- }
- else if ((styp_flags & STYP_BSS)
- || (styp_flags & STYP_SBSS))
- {
- sec_flags |= SEC_ALLOC;
- }
- else if (styp_flags & STYP_INFO)
- {
- sec_flags |= SEC_NEVER_LOAD;
- }
- else if ((styp_flags & STYP_LIT8)
- || (styp_flags & STYP_LIT4))
- {
- sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
- }
- else
- {
- sec_flags |= SEC_ALLOC | SEC_LOAD;
- }
-
- return sec_flags;
-}
-\f
-/* Read in and swap the important symbolic information for an ECOFF
- object file. FIXME: This is called by gdb. If there is ever
- another ECOFF target, it should be moved into some sort of target
- specific structure. */
-
-boolean
-ecoff_slurp_symbolic_info (abfd)
- bfd *abfd;
-{
- struct hdr_ext external_symhdr;
- HDRR *internal_symhdr;
- bfd_size_type raw_base;
- bfd_size_type raw_size;
- PTR raw;
- struct fdr_ext *fraw_src;
- struct fdr_ext *fraw_end;
- struct fdr *fdr_ptr;
-
- /* Check whether we've already gotten it, and whether there's any to
- get. */
- if (ecoff_data (abfd)->raw_syments != (PTR) NULL)
- return true;
- if (ecoff_data (abfd)->sym_filepos == 0)
- {
- bfd_get_symcount (abfd) = 0;
- return true;
- }
-
- /* At this point bfd_get_symcount (abfd) holds the number of symbols
- as read from the file header, but on ECOFF this is always the
- size of the symbolic information header. It would be cleaner to
- handle this when we first read the file in coffgen.c. */
- if (bfd_get_symcount (abfd) != sizeof (external_symhdr))
- {
- bfd_error = bad_value;
- return false;
- }
-
- /* Read the symbolic information header. */
- if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos, SEEK_SET) == -1
- || (bfd_read ((PTR) &external_symhdr, sizeof (external_symhdr), 1, abfd)
- != sizeof (external_symhdr)))
- {
- bfd_error = system_call_error;
- return false;
- }
- internal_symhdr = &ecoff_data (abfd)->symbolic_header;
- ecoff_swap_hdr_in (abfd, &external_symhdr, internal_symhdr);
-
- if (internal_symhdr->magic != magicSym)
- {
- bfd_error = bad_value;
- return false;
- }
-
- /* Now we can get the correct number of symbols. */
- bfd_get_symcount (abfd) = (internal_symhdr->isymMax
- + internal_symhdr->iextMax);
-
- /* Read all the symbolic information at once. */
- raw_base = ecoff_data (abfd)->sym_filepos + sizeof (struct hdr_ext);
-
- if (internal_symhdr->cbExtOffset != 0)
- raw_size = (internal_symhdr->cbExtOffset
- - raw_base
- + internal_symhdr->iextMax * sizeof (struct ext_ext));
- else
- {
- long cbline, issmax, issextmax;
-
- cbline = (internal_symhdr->cbLine + 3) &~ 3;
- issmax = (internal_symhdr->issMax + 3) &~ 3;
- issextmax = (internal_symhdr->issExtMax + 3) &~ 3;
- raw_size = (cbline * sizeof (unsigned char)
- + internal_symhdr->idnMax * sizeof (struct dnr_ext)
- + internal_symhdr->ipdMax * sizeof (struct pdr_ext)
- + internal_symhdr->isymMax * sizeof (struct sym_ext)
- + internal_symhdr->ioptMax * sizeof (struct opt_ext)
- + internal_symhdr->iauxMax * sizeof (union aux_ext)
- + issmax * sizeof (char)
- + issextmax * sizeof (char)
- + internal_symhdr->ifdMax * sizeof (struct fdr_ext)
- + internal_symhdr->crfd * sizeof (struct rfd_ext)
- + internal_symhdr->iextMax * sizeof (struct ext_ext));
- }
-
- if (raw_size == 0)
- {
- ecoff_data (abfd)->sym_filepos = 0;
- return true;
- }
- raw = (PTR) bfd_alloc (abfd, raw_size);
- if (raw == NULL)
- {
- bfd_error = no_memory;
- return false;
- }
- if (bfd_read (raw, raw_size, 1, abfd) != raw_size)
- {
- bfd_error = system_call_error;
- bfd_release (abfd, raw);
- return false;
- }
-
- ecoff_data (abfd)->raw_size = raw_size;
- ecoff_data (abfd)->raw_syments = raw;
-
- /* Get pointers for the numeric offsets in the HDRR structure. */
-#define FIX(off1, off2, type) \
- if (internal_symhdr->off1 == 0) \
- ecoff_data (abfd)->off2 = (type *) NULL; \
- else \
- ecoff_data (abfd)->off2 = (type *) ((char *) raw \
- + internal_symhdr->off1 \
- - raw_base)
- FIX (cbLineOffset, line, unsigned char);
- FIX (cbDnOffset, external_dnr, struct dnr_ext);
- FIX (cbPdOffset, external_pdr, struct pdr_ext);
- FIX (cbSymOffset, external_sym, struct sym_ext);
- FIX (cbOptOffset, external_opt, struct opt_ext);
- FIX (cbAuxOffset, external_aux, union aux_ext);
- FIX (cbSsOffset, ss, char);
- FIX (cbSsExtOffset, ssext, char);
- FIX (cbFdOffset, external_fdr, struct fdr_ext);
- FIX (cbRfdOffset, external_rfd, struct rfd_ext);
- FIX (cbExtOffset, external_ext, struct ext_ext);
-#undef FIX
-
- /* I don't want to always swap all the data, because it will just
- waste time and most programs will never look at it. The only
- time the linker needs most of the debugging information swapped
- is when linking big-endian and little-endian MIPS object files
- together, which is not a common occurrence.
-
- We need to look at the fdr to deal with a lot of information in
- the symbols, so we swap them here. */
- ecoff_data (abfd)->fdr = (struct fdr *) bfd_alloc (abfd,
- (internal_symhdr->ifdMax *
- sizeof (struct fdr)));
- if (ecoff_data (abfd)->fdr == NULL)
- {
- bfd_error = no_memory;
- return false;
- }
- fdr_ptr = ecoff_data (abfd)->fdr;
- fraw_src = ecoff_data (abfd)->external_fdr;
- fraw_end = fraw_src + internal_symhdr->ifdMax;
- for (; fraw_src < fraw_end; fraw_src++, fdr_ptr++)
- ecoff_swap_fdr_in (abfd, fraw_src, fdr_ptr);
-
- return true;
-}
+/* Get the ECOFF swapping routines. */
+#define ECOFF_32
+#include "ecoffswap.h"
\f
-/* ECOFF symbol table routines. The ECOFF symbol table is described
- in gcc/mips-tfile.c. */
-
-/* ECOFF 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. */
-static asection ecoff_scom_section;
-static asymbol ecoff_scom_symbol;
-static asymbol *ecoff_scom_symbol_ptr;
-
-/* Create an empty symbol. */
-
-static asymbol *
-ecoff_make_empty_symbol (abfd)
- bfd *abfd;
-{
- ecoff_symbol_type *new;
-
- new = (ecoff_symbol_type *) bfd_alloc (abfd, sizeof (ecoff_symbol_type));
- if (new == (ecoff_symbol_type *) NULL)
- {
- bfd_error = no_memory;
- return (asymbol *) NULL;
- }
- memset (new, 0, sizeof *new);
- new->symbol.section = (asection *) NULL;
- new->fdr = (FDR *) NULL;
- new->local = false;
- new->native.lnative = (struct sym_ext *) NULL;
- new->symbol.the_bfd = abfd;
- return &new->symbol;
-}
-
-/* Set the BFD flags and section for an ECOFF symbol. */
-
-static void
-ecoff_set_symbol_info (abfd, ecoff_sym, asym, ext)
- bfd *abfd;
- SYMR *ecoff_sym;
- asymbol *asym;
- int ext;
-{
- asym->the_bfd = abfd;
- asym->value = ecoff_sym->value;
- asym->section = &bfd_debug_section;
- asym->udata = NULL;
-
- /* Most symbol types are just for debugging. */
- switch (ecoff_sym->st)
- {
- case stGlobal:
- case stStatic:
- case stLabel:
- case stProc:
- case stStaticProc:
- break;
- case stNil:
- if (MIPS_IS_STAB (ecoff_sym))
- {
- asym->flags = BSF_DEBUGGING;
- return;
- }
- break;
- default:
- asym->flags = BSF_DEBUGGING;
- return;
- }
-
- if (ext)
- asym->flags = BSF_EXPORT | BSF_GLOBAL;
- else
- asym->flags = BSF_LOCAL;
- switch (ecoff_sym->sc)
- {
- case scNil:
- /* Used for compiler generated labels. Leave them in the
- debugging section, and mark them as local. If BSF_DEBUGGING
- is set, then nm does not display them for some reason. If no
- flags are set then the linker whines about them. */
- asym->flags = BSF_LOCAL;
- break;
- case scText:
- asym->section = bfd_make_section_old_way (abfd, ".text");
- asym->value -= asym->section->vma;
- break;
- case scData:
- asym->section = bfd_make_section_old_way (abfd, ".data");
- asym->value -= asym->section->vma;
- break;
- case scBss:
- if (ext)
- {
- asym->section = &bfd_com_section;
- asym->flags = 0;
- }
- else
- {
- asym->section = bfd_make_section_old_way (abfd, ".bss");
- asym->value -= asym->section->vma;
- }
- break;
- case scRegister:
- asym->flags = BSF_DEBUGGING;
- break;
- case scAbs:
- asym->section = &bfd_abs_section;
- break;
- case scUndefined:
- asym->section = &bfd_und_section;
- asym->flags = 0;
- asym->value = 0;
- break;
- case scCdbLocal:
- case scBits:
- case scCdbSystem:
- case scRegImage:
- case scInfo:
- case scUserStruct:
- asym->flags = BSF_DEBUGGING;
- break;
- case scSData:
- asym->section = bfd_make_section_old_way (abfd, ".sdata");
- asym->value -= asym->section->vma;
- break;
- case scSBss:
- asym->section = bfd_make_section_old_way (abfd, ".sbss");
- if (! ext)
- asym->value -= asym->section->vma;
- break;
- case scRData:
- asym->section = bfd_make_section_old_way (abfd, ".rdata");
- asym->value -= asym->section->vma;
- break;
- case scVar:
- asym->flags = BSF_DEBUGGING;
- break;
- case scCommon:
- if (asym->value > ecoff_data (abfd)->gp_size)
- {
- asym->section = &bfd_com_section;
- asym->flags = 0;
- break;
- }
- /* Fall through. */
- case scSCommon:
- if (ecoff_scom_section.name == NULL)
- {
- /* Initialize the small common section. */
- ecoff_scom_section.name = SCOMMON;
- ecoff_scom_section.flags = SEC_IS_COMMON;
- ecoff_scom_section.output_section = &ecoff_scom_section;
- ecoff_scom_section.symbol = &ecoff_scom_symbol;
- ecoff_scom_section.symbol_ptr_ptr = &ecoff_scom_symbol_ptr;
- ecoff_scom_symbol.name = SCOMMON;
- ecoff_scom_symbol.flags = BSF_SECTION_SYM;
- ecoff_scom_symbol.section = &ecoff_scom_section;
- ecoff_scom_symbol_ptr = &ecoff_scom_symbol;
- }
- asym->section = &ecoff_scom_section;
- asym->flags = 0;
- break;
- case scVarRegister:
- case scVariant:
- asym->flags = BSF_DEBUGGING;
- break;
- case scSUndefined:
- asym->section = &bfd_und_section;
- asym->flags = 0;
- asym->value = 0;
- break;
- case scInit:
- asym->section = bfd_make_section_old_way (abfd, ".init");
- asym->value -= asym->section->vma;
- break;
- case scBasedVar:
- case scXData:
- case scPData:
- asym->flags = BSF_DEBUGGING;
- break;
- case scFini:
- asym->section = bfd_make_section_old_way (abfd, ".fini");
- asym->value -= asym->section->vma;
- break;
- default:
- break;
- }
-}
-
-/* Read an ECOFF symbol table. */
-
-static boolean
-ecoff_slurp_symbol_table (abfd)
- bfd *abfd;
-{
- bfd_size_type internal_size;
- ecoff_symbol_type *internal;
- ecoff_symbol_type *internal_ptr;
- struct ext_ext *eraw_src;
- struct ext_ext *eraw_end;
- FDR *fdr_ptr;
- FDR *fdr_end;
-
- /* If we've already read in the symbol table, do nothing. */
- if (ecoff_data (abfd)->canonical_symbols != NULL)
- return true;
-
- /* Get the symbolic information. */
- if (ecoff_slurp_symbolic_info (abfd) == false)
- return false;
- if (bfd_get_symcount (abfd) == 0)
- return true;
-
- internal_size = bfd_get_symcount (abfd) * sizeof (ecoff_symbol_type);
- internal = (ecoff_symbol_type *) bfd_alloc (abfd, internal_size);
- if (internal == NULL)
- {
- bfd_error = no_memory;
- return false;
- }
-
- internal_ptr = internal;
- eraw_src = ecoff_data (abfd)->external_ext;
- eraw_end = eraw_src + ecoff_data (abfd)->symbolic_header.iextMax;
- for (; eraw_src < eraw_end; eraw_src++, internal_ptr++)
- {
- EXTR internal_esym;
-
- ecoff_swap_ext_in (abfd, eraw_src, &internal_esym);
- internal_ptr->symbol.name = (ecoff_data (abfd)->ssext
- + internal_esym.asym.iss);
- ecoff_set_symbol_info (abfd, &internal_esym.asym,
- &internal_ptr->symbol, 1);
- internal_ptr->fdr = ecoff_data (abfd)->fdr + internal_esym.ifd;
- internal_ptr->local = false;
- internal_ptr->native.enative = eraw_src;
- }
-
- /* The local symbols must be accessed via the fdr's, because the
- string and aux indices are relative to the fdr information. */
- fdr_ptr = ecoff_data (abfd)->fdr;
- fdr_end = fdr_ptr + ecoff_data (abfd)->symbolic_header.ifdMax;
- for (; fdr_ptr < fdr_end; fdr_ptr++)
- {
- struct sym_ext *lraw_src;
- struct sym_ext *lraw_end;
-
- lraw_src = ecoff_data (abfd)->external_sym + fdr_ptr->isymBase;
- lraw_end = lraw_src + fdr_ptr->csym;
- for (; lraw_src < lraw_end; lraw_src++, internal_ptr++)
- {
- SYMR internal_sym;
-
- ecoff_swap_sym_in (abfd, lraw_src, &internal_sym);
- internal_ptr->symbol.name = (ecoff_data (abfd)->ss
- + fdr_ptr->issBase
- + internal_sym.iss);
- ecoff_set_symbol_info (abfd, &internal_sym,
- &internal_ptr->symbol, 0);
- internal_ptr->fdr = fdr_ptr;
- internal_ptr->local = true;
- internal_ptr->native.lnative = lraw_src;
- }
- }
-
- ecoff_data (abfd)->canonical_symbols = internal;
-
- return true;
-}
-
-static unsigned int
-ecoff_get_symtab_upper_bound (abfd)
- bfd *abfd;
-{
- if (ecoff_slurp_symbolic_info (abfd) == false
- || bfd_get_symcount (abfd) == 0)
- return 0;
-
- return (bfd_get_symcount (abfd) + 1) * (sizeof (ecoff_symbol_type *));
-}
-
-static unsigned int
-ecoff_get_symtab (abfd, alocation)
- bfd *abfd;
- asymbol **alocation;
-{
- unsigned int counter = 0;
- ecoff_symbol_type *symbase;
- ecoff_symbol_type **location = (ecoff_symbol_type **) alocation;
-
- if (ecoff_slurp_symbol_table (abfd) == false
- || bfd_get_symcount (abfd) == 0)
- return 0;
-
- symbase = ecoff_data (abfd)->canonical_symbols;
- while (counter < bfd_get_symcount (abfd))
- {
- *(location++) = symbase++;
- counter++;
- }
- *location++ = (ecoff_symbol_type *) NULL;
- return bfd_get_symcount (abfd);
-}
-
-/* Turn ECOFF type information into a printable string.
- ecoff_emit_aggregate and ecoff_type_to_string are from
- gcc/mips-tdump.c, with swapping added and used_ptr removed. */
-
-/* Write aggregate information to a string. */
-
-static void
-ecoff_emit_aggregate (abfd, string, rndx, isym, which)
- bfd *abfd;
- char *string;
- RNDXR *rndx;
- long isym;
- CONST char *which;
-{
- int ifd = rndx->rfd;
- int indx = rndx->index;
- int sym_base, ss_base;
- CONST char *name;
-
- if (ifd == 0xfff)
- ifd = isym;
-
- sym_base = ecoff_data (abfd)->fdr[ifd].isymBase;
- ss_base = ecoff_data (abfd)->fdr[ifd].issBase;
-
- if (indx == indexNil)
- name = "/* no name */";
- else
- {
- SYMR sym;
-
- indx += sym_base;
- ecoff_swap_sym_in (abfd,
- ecoff_data (abfd)->external_sym + indx,
- &sym);
- name = ecoff_data (abfd)->ss + ss_base + sym.iss;
- }
-
- sprintf (string,
- "%s %s { ifd = %d, index = %d }",
- which, name, ifd,
- indx + ecoff_data (abfd)->symbolic_header.iextMax);
-}
-
-/* Convert the type information to string format. */
+/* How to process the various relocs types. */
-static char *
-ecoff_type_to_string (abfd, aux_ptr, indx, bigendian)
- bfd *abfd;
- union aux_ext *aux_ptr;
- int indx;
- int bigendian;
+static reloc_howto_type mips_howto_table[] =
{
- AUXU u;
- struct qual {
- unsigned int type;
- int low_bound;
- int high_bound;
- int stride;
- } qualifiers[7];
-
- unsigned int basic_type;
- int i;
- static char buffer1[1024];
- static char buffer2[1024];
- char *p1 = buffer1;
- char *p2 = buffer2;
- RNDXR rndx;
-
- for (i = 0; i < 7; i++)
- {
- qualifiers[i].low_bound = 0;
- qualifiers[i].high_bound = 0;
- qualifiers[i].stride = 0;
- }
-
- if (AUX_GET_ISYM (bigendian, &aux_ptr[indx]) == -1)
- return "-1 (no type)";
- ecoff_swap_tir_in (bigendian, &aux_ptr[indx++].a_ti, &u.ti);
-
- basic_type = u.ti.bt;
- qualifiers[0].type = u.ti.tq0;
- qualifiers[1].type = u.ti.tq1;
- qualifiers[2].type = u.ti.tq2;
- qualifiers[3].type = u.ti.tq3;
- qualifiers[4].type = u.ti.tq4;
- qualifiers[5].type = u.ti.tq5;
- qualifiers[6].type = tqNil;
-
- /*
- * Go get the basic type.
- */
- switch (basic_type)
- {
- case btNil: /* undefined */
- strcpy (p1, "nil");
- break;
-
- case btAdr: /* address - integer same size as pointer */
- strcpy (p1, "address");
- break;
-
- case btChar: /* character */
- strcpy (p1, "char");
- break;
-
- case btUChar: /* unsigned character */
- strcpy (p1, "unsigned char");
- break;
-
- case btShort: /* short */
- strcpy (p1, "short");
- break;
-
- case btUShort: /* unsigned short */
- strcpy (p1, "unsigned short");
- break;
-
- case btInt: /* int */
- strcpy (p1, "int");
- break;
-
- case btUInt: /* unsigned int */
- strcpy (p1, "unsigned int");
- break;
-
- case btLong: /* long */
- strcpy (p1, "long");
- break;
-
- case btULong: /* unsigned long */
- strcpy (p1, "unsigned long");
- break;
-
- case btFloat: /* float (real) */
- strcpy (p1, "float");
- break;
-
- case btDouble: /* Double (real) */
- strcpy (p1, "double");
- break;
-
- /* Structures add 1-2 aux words:
- 1st word is [ST_RFDESCAPE, offset] pointer to struct def;
- 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
-
- case btStruct: /* Structure (Record) */
- ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
- ecoff_emit_aggregate (abfd, p1, &rndx,
- AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
- "struct");
- indx++; /* skip aux words */
- break;
-
- /* Unions add 1-2 aux words:
- 1st word is [ST_RFDESCAPE, offset] pointer to union def;
- 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
-
- case btUnion: /* Union */
- ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
- ecoff_emit_aggregate (abfd, p1, &rndx,
- AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
- "union");
- indx++; /* skip aux words */
- break;
-
- /* Enumerations add 1-2 aux words:
- 1st word is [ST_RFDESCAPE, offset] pointer to enum def;
- 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
-
- case btEnum: /* Enumeration */
- ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
- ecoff_emit_aggregate (abfd, p1, &rndx,
- AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
- "enum");
- indx++; /* skip aux words */
- break;
-
- case btTypedef: /* defined via a typedef, isymRef points */
- strcpy (p1, "typedef");
- break;
-
- case btRange: /* subrange of int */
- strcpy (p1, "subrange");
- break;
-
- case btSet: /* pascal sets */
- strcpy (p1, "set");
- break;
-
- case btComplex: /* fortran complex */
- strcpy (p1, "complex");
- break;
-
- case btDComplex: /* fortran double complex */
- strcpy (p1, "double complex");
- break;
-
- case btIndirect: /* forward or unnamed typedef */
- strcpy (p1, "forward/unamed typedef");
- break;
-
- case btFixedDec: /* Fixed Decimal */
- strcpy (p1, "fixed decimal");
- break;
-
- case btFloatDec: /* Float Decimal */
- strcpy (p1, "float decimal");
- break;
-
- case btString: /* Varying Length Character String */
- strcpy (p1, "string");
- break;
-
- case btBit: /* Aligned Bit String */
- strcpy (p1, "bit");
- break;
-
- case btPicture: /* Picture */
- strcpy (p1, "picture");
- break;
-
- case btVoid: /* Void */
- strcpy (p1, "void");
- break;
-
- default:
- sprintf (p1, "Unknown basic type %d", (int) basic_type);
- break;
- }
-
- p1 += strlen (buffer1);
-
- /*
- * If this is a bitfield, get the bitsize.
- */
- if (u.ti.fBitfield)
- {
- int bitsize;
+ /* Reloc type 0 is ignored. The reloc reading code ensures that
+ this is a reference to the .abs section, which will cause
+ bfd_perform_relocation to do nothing. */
+ HOWTO (MIPS_R_IGNORE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ 0, /* special_function */
+ "IGNORE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
- bitsize = AUX_GET_WIDTH (bigendian, &aux_ptr[indx++]);
- sprintf (p1, " : %d", bitsize);
- p1 += strlen (buffer1);
- }
+ /* A 16 bit reference to a symbol, normally from a data section. */
+ HOWTO (MIPS_R_REFHALF, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ mips_generic_reloc, /* special_function */
+ "REFHALF", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+ /* A 32 bit reference to a symbol, normally from a data section. */
+ HOWTO (MIPS_R_REFWORD, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ mips_generic_reloc, /* special_function */
+ "REFWORD", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
- /*
- * Deal with any qualifiers.
- */
- if (qualifiers[0].type != tqNil)
- {
- /*
- * Snarf up any array bounds in the correct order. Arrays
- * store 5 successive words in the aux. table:
- * word 0 RNDXR to type of the bounds (ie, int)
- * word 1 Current file descriptor index
- * word 2 low bound
- * word 3 high bound (or -1 if [])
- * word 4 stride size in bits
- */
- for (i = 0; i < 7; i++)
- {
- if (qualifiers[i].type == tqArray)
- {
- qualifiers[i].low_bound =
- AUX_GET_DNLOW (bigendian, &aux_ptr[indx+2]);
- qualifiers[i].high_bound =
- AUX_GET_DNHIGH (bigendian, &aux_ptr[indx+3]);
- qualifiers[i].stride =
- AUX_GET_WIDTH (bigendian, &aux_ptr[indx+4]);
- indx += 5;
- }
- }
+ /* A 26 bit absolute jump address. */
+ HOWTO (MIPS_R_JMPADDR, /* 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. */
+ mips_generic_reloc, /* special_function */
+ "JMPADDR", /* name */
+ true, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ false), /* pcrel_offset */
- /*
- * Now print out the qualifiers.
- */
- for (i = 0; i < 6; i++)
- {
- switch (qualifiers[i].type)
- {
- case tqNil:
- case tqMax:
- break;
+ /* The high 16 bits of a symbol value. Handled by the function
+ mips_refhi_reloc. */
+ HOWTO (MIPS_R_REFHI, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ mips_refhi_reloc, /* special_function */
+ "REFHI", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
- case tqPtr:
- strcpy (p2, "ptr to ");
- p2 += sizeof ("ptr to ")-1;
- break;
+ /* The low 16 bits of a symbol value. */
+ HOWTO (MIPS_R_REFLO, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ mips_reflo_reloc, /* special_function */
+ "REFLO", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
- case tqVol:
- strcpy (p2, "volatile ");
- p2 += sizeof ("volatile ")-1;
- break;
+ /* A reference to an offset from the gp register. Handled by the
+ function mips_gprel_reloc. */
+ HOWTO (MIPS_R_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 */
+ mips_gprel_reloc, /* special_function */
+ "GPREL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
- case tqFar:
- strcpy (p2, "far ");
- p2 += sizeof ("far ")-1;
- break;
+ /* A reference to a literal using an offset from the gp register.
+ Handled by the function mips_gprel_reloc. */
+ HOWTO (MIPS_R_LITERAL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ mips_gprel_reloc, /* special_function */
+ "LITERAL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
- case tqProc:
- strcpy (p2, "func. ret. ");
- p2 += sizeof ("func. ret. ");
- break;
+ { 8 },
+ { 9 },
+ { 10 },
+ { 11 },
- case tqArray:
- {
- int first_array = i;
- int j;
-
- /* Print array bounds reversed (ie, in the order the C
- programmer writes them). C is such a fun language.... */
-
- while (i < 5 && qualifiers[i+1].type == tqArray)
- i++;
-
- for (j = i; j >= first_array; j--)
- {
- strcpy (p2, "array [");
- p2 += sizeof ("array [")-1;
- if (qualifiers[j].low_bound != 0)
- sprintf (p2,
- "%ld:%ld {%ld bits}",
- (long) qualifiers[j].low_bound,
- (long) qualifiers[j].high_bound,
- (long) qualifiers[j].stride);
-
- else if (qualifiers[j].high_bound != -1)
- sprintf (p2,
- "%ld {%ld bits}",
- (long) (qualifiers[j].high_bound + 1),
- (long) (qualifiers[j].stride));
-
- else
- sprintf (p2, " {%ld bits}", (long) (qualifiers[j].stride));
-
- p2 += strlen (p2);
- strcpy (p2, "] of ");
- p2 += sizeof ("] of ")-1;
- }
- }
- break;
- }
- }
- }
+ /* This reloc is a Cygnus extension used when generating position
+ independent code for embedded systems. It represents a 16 bit PC
+ relative reloc rightshifted twice as used in the MIPS branch
+ instructions. */
+ HOWTO (MIPS_R_PCREL16, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ mips_generic_reloc, /* special_function */
+ "PCREL16", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* This reloc is a Cygnus extension used when generating position
+ independent code for embedded systems. It represents the high 16
+ bits of a PC relative reloc. The next reloc must be
+ MIPS_R_RELLO, and the addend is formed from the addends of the
+ two instructions, just as in MIPS_R_REFHI and MIPS_R_REFLO. The
+ final value is actually PC relative to the location of the
+ MIPS_R_RELLO reloc, not the MIPS_R_RELHI reloc. */
+ HOWTO (MIPS_R_RELHI, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ mips_relhi_reloc, /* special_function */
+ "RELHI", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
- strcpy (p2, buffer1);
- return buffer2;
-}
+ /* This reloc is a Cygnus extension used when generating position
+ independent code for embedded systems. It represents the low 16
+ bits of a PC relative reloc. */
+ HOWTO (MIPS_R_RELLO, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ mips_rello_reloc, /* special_function */
+ "RELLO", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ { 15 },
+ { 16 },
+ { 17 },
+ { 18 },
+ { 19 },
+ { 20 },
+ { 21 },
+
+ /* This reloc is a Cygnus extension used when generating position
+ independent code for embedded systems. It represents an entry in
+ a switch table, which is the difference between two symbols in
+ the .text section. The symndx is actually the offset from the
+ reloc address to the subtrahend. See include/coff/mips.h for
+ more details. */
+ HOWTO (MIPS_R_SWITCH, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ mips_switch_reloc, /* special_function */
+ "SWITCH", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ true) /* pcrel_offset */
+};
-/* Print information about an ECOFF symbol. */
+/* When the linker is doing relaxing, it may change a external PCREL16
+ reloc. This typically represents an instruction like
+ bal foo
+ We change it to
+ .set noreorder
+ bal $L1
+ lui $at,%hi(foo - $L1)
+ $L1:
+ addiu $at,%lo(foo - $L1)
+ addu $at,$at,$31
+ jalr $at
+ PCREL16_EXPANSION_ADJUSTMENT is the number of bytes this changes the
+ instruction by. */
+
+#define PCREL16_EXPANSION_ADJUSTMENT (4 * 4)
+\f
+/* See whether the magic number matches. */
-static void
-ecoff_print_symbol (abfd, filep, symbol, how)
+static boolean
+mips_ecoff_bad_format_hook (abfd, filehdr)
bfd *abfd;
- PTR filep;
- asymbol *symbol;
- bfd_print_symbol_type how;
+ PTR filehdr;
{
- FILE *file = (FILE *)filep;
+ struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
- switch (how)
+ switch (internal_f->f_magic)
{
- case bfd_print_symbol_name:
- fprintf (file, "%s", symbol->name);
- break;
- case bfd_print_symbol_more:
- if (ecoffsymbol (symbol)->local)
- {
- SYMR ecoff_sym;
-
- ecoff_swap_sym_in (abfd, ecoffsymbol (symbol)->native.lnative,
- &ecoff_sym);
- fprintf (file, "ecoff local %lx %x %x",
- (unsigned long) ecoff_sym.value,
- (unsigned) ecoff_sym.st, (unsigned) ecoff_sym.sc);
- }
- else
- {
- EXTR ecoff_ext;
-
- ecoff_swap_ext_in (abfd, ecoffsymbol (symbol)->native.enative,
- &ecoff_ext);
- fprintf (file, "ecoff extern %lx %x %x",
- (unsigned long) ecoff_ext.asym.value,
- (unsigned) ecoff_ext.asym.st,
- (unsigned) ecoff_ext.asym.sc);
- }
- break;
- case bfd_print_symbol_nm:
- {
- CONST char *section_name = symbol->section->name;
-
- bfd_print_symbol_vandf ((PTR) file, symbol);
- fprintf (file, " %-5s %s %s",
- section_name,
- ecoffsymbol (symbol)->local ? "l" : "e",
- symbol->name);
- }
- break;
- case bfd_print_symbol_all:
- /* Print out the symbols in a reasonable way */
- {
- char type;
- int pos;
- EXTR ecoff_ext;
- char jmptbl;
- char cobol_main;
- char weakext;
-
- if (ecoffsymbol (symbol)->local)
- {
- ecoff_swap_sym_in (abfd, ecoffsymbol (symbol)->native.lnative,
- &ecoff_ext.asym);
- type = 'l';
- pos = (ecoffsymbol (symbol)->native.lnative
- - ecoff_data (abfd)->external_sym
- + ecoff_data (abfd)->symbolic_header.iextMax);
- jmptbl = ' ';
- cobol_main = ' ';
- weakext = ' ';
- }
- else
- {
- ecoff_swap_ext_in (abfd, ecoffsymbol (symbol)->native.enative,
- &ecoff_ext);
- type = 'e';
- pos = (ecoffsymbol (symbol)->native.enative
- - ecoff_data (abfd)->external_ext);
- jmptbl = ecoff_ext.jmptbl ? 'j' : ' ';
- cobol_main = ecoff_ext.cobol_main ? 'c' : ' ';
- weakext = ecoff_ext.weakext ? 'w' : ' ';
- }
-
- fprintf (file, "[%3d] %c %lx st %x sc %x indx %x %c%c%c %s",
- pos, type, (unsigned long) ecoff_ext.asym.value,
- (unsigned) ecoff_ext.asym.st,
- (unsigned) ecoff_ext.asym.sc,
- (unsigned) ecoff_ext.asym.index,
- jmptbl, cobol_main, weakext,
- symbol->name);
-
- if (ecoffsymbol (symbol)->fdr != NULL
- && ecoff_ext.asym.index != indexNil)
- {
- unsigned indx;
- int bigendian;
- long sym_base;
- union aux_ext *aux_base;
-
- indx = ecoff_ext.asym.index;
-
- /* sym_base is used to map the fdr relative indices which
- appear in the file to the position number which we are
- using. */
- sym_base = ecoffsymbol (symbol)->fdr->isymBase;
- if (ecoffsymbol (symbol)->local)
- sym_base += ecoff_data (abfd)->symbolic_header.iextMax;
-
- /* aux_base is the start of the aux entries for this file;
- asym.index is an offset from this. */
- aux_base = (ecoff_data (abfd)->external_aux
- + ecoffsymbol (symbol)->fdr->iauxBase);
-
- /* The aux entries are stored in host byte order; the
- order is indicated by a bit in the fdr. */
- bigendian = ecoffsymbol (symbol)->fdr->fBigendian;
-
- /* This switch is basically from gcc/mips-tdump.c */
- switch (ecoff_ext.asym.st)
- {
- case stNil:
- case stLabel:
- break;
-
- case stFile:
- case stBlock:
- printf ("\n End+1 symbol: %ld", indx + sym_base);
- break;
+ case MIPS_MAGIC_1:
+ /* I don't know what endianness this implies. */
+ return true;
- case stEnd:
- if (ecoff_ext.asym.sc == scText
- || ecoff_ext.asym.sc == scInfo)
- printf ("\n First symbol: %ld", indx + sym_base);
- else
- printf ("\n First symbol: %ld",
- (AUX_GET_ISYM (bigendian,
- &aux_base[ecoff_ext.asym.index])
- + sym_base));
- break;
+ case MIPS_MAGIC_BIG:
+ case MIPS_MAGIC_BIG2:
+ case MIPS_MAGIC_BIG3:
+ return bfd_big_endian (abfd);
- case stProc:
- case stStaticProc:
- if (MIPS_IS_STAB (&ecoff_ext.asym))
- ;
- else if (ecoffsymbol (symbol)->local)
- printf ("\n End+1 symbol: %-7ld Type: %s",
- (AUX_GET_ISYM (bigendian,
- &aux_base[ecoff_ext.asym.index])
- + sym_base),
- ecoff_type_to_string (abfd, aux_base, indx + 1,
- bigendian));
- else
- printf ("\n Local symbol: %d",
- (indx
- + sym_base
- + ecoff_data (abfd)->symbolic_header.iextMax));
- break;
+ case MIPS_MAGIC_LITTLE:
+ case MIPS_MAGIC_LITTLE2:
+ case MIPS_MAGIC_LITTLE3:
+ return bfd_little_endian (abfd);
- default:
- if (!MIPS_IS_STAB (&ecoff_ext.asym))
- printf ("\n Type: %s",
- ecoff_type_to_string (abfd, aux_base, indx,
- bigendian));
- break;
- }
- }
- }
- break;
+ default:
+ return false;
}
}
\f
/* Swap a reloc in. */
static void
-ecoff_swap_reloc_in (abfd, ext, intern)
+mips_ecoff_swap_reloc_in (abfd, ext_ptr, intern)
bfd *abfd;
- RELOC *ext;
+ PTR ext_ptr;
struct internal_reloc *intern;
{
+ const RELOC *ext = (RELOC *) ext_ptr;
+
intern->r_vaddr = bfd_h_get_32 (abfd, (bfd_byte *) ext->r_vaddr);
- if (abfd->xvec->header_byteorder_big_p != false)
+ if (bfd_header_big_endian (abfd))
{
intern->r_symndx = (((int) ext->r_bits[0]
<< RELOC_BITS0_SYMNDX_SH_LEFT_BIG)
<< RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE)
| ((int) ext->r_bits[2]
<< RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE));
- intern->r_type = ((ext->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
- >> RELOC_BITS3_TYPE_SH_LITTLE);
+ intern->r_type = (((ext->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
+ >> RELOC_BITS3_TYPE_SH_LITTLE)
+ | ((ext->r_bits[3] & RELOC_BITS3_TYPEHI_LITTLE)
+ << RELOC_BITS3_TYPEHI_SH_LITTLE));
intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) != 0;
}
+
+ /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
+ MIPS_R_RELLO reloc, r_symndx is actually the offset from the
+ reloc address to the base of the difference (see
+ include/coff/mips.h for more details). We copy symndx into the
+ r_offset field so as not to confuse ecoff_slurp_reloc_table in
+ ecoff.c. In adjust_reloc_in we then copy r_offset into the reloc
+ addend. */
+ if (intern->r_type == MIPS_R_SWITCH
+ || (! intern->r_extern
+ && (intern->r_type == MIPS_R_RELLO
+ || intern->r_type == MIPS_R_RELHI)))
+ {
+ BFD_ASSERT (! intern->r_extern);
+ intern->r_offset = intern->r_symndx;
+ if (intern->r_offset & 0x800000)
+ intern->r_offset -= 0x1000000;
+ intern->r_symndx = RELOC_SECTION_TEXT;
+ }
}
/* Swap a reloc out. */
-static unsigned int
-ecoff_swap_reloc_out (abfd, src, dst)
+static void
+mips_ecoff_swap_reloc_out (abfd, intern, dst)
bfd *abfd;
- PTR src;
+ const struct internal_reloc *intern;
PTR dst;
{
- struct internal_reloc *intern = (struct internal_reloc *) src;
RELOC *ext = (RELOC *) dst;
+ long r_symndx;
+
+ BFD_ASSERT (intern->r_extern
+ || (intern->r_symndx >= 0 && intern->r_symndx <= 12));
+
+ /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELLO or
+ MIPS_R_RELHI reloc, we actually want to write the contents of
+ r_offset out as the symbol index. This undoes the change made by
+ mips_ecoff_swap_reloc_in. */
+ if (intern->r_type != MIPS_R_SWITCH
+ && (intern->r_extern
+ || (intern->r_type != MIPS_R_RELHI
+ && intern->r_type != MIPS_R_RELLO)))
+ r_symndx = intern->r_symndx;
+ else
+ {
+ BFD_ASSERT (intern->r_symndx == RELOC_SECTION_TEXT);
+ r_symndx = intern->r_offset & 0xffffff;
+ }
bfd_h_put_32 (abfd, intern->r_vaddr, (bfd_byte *) ext->r_vaddr);
- if (abfd->xvec->header_byteorder_big_p != false)
+ if (bfd_header_big_endian (abfd))
{
- ext->r_bits[0] = intern->r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_BIG;
- ext->r_bits[1] = intern->r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_BIG;
- ext->r_bits[2] = intern->r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_BIG;
+ ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_BIG;
+ ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_BIG;
+ ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_BIG;
ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_BIG)
& RELOC_BITS3_TYPE_BIG)
| (intern->r_extern ? RELOC_BITS3_EXTERN_BIG : 0));
}
else
{
- ext->r_bits[0] = intern->r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE;
- ext->r_bits[1] = intern->r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE;
- ext->r_bits[2] = intern->r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE;
+ ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE;
+ ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE;
+ ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE;
ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_LITTLE)
& RELOC_BITS3_TYPE_LITTLE)
+ | ((intern->r_type >> RELOC_BITS3_TYPEHI_SH_LITTLE
+ & RELOC_BITS3_TYPEHI_LITTLE))
| (intern->r_extern ? RELOC_BITS3_EXTERN_LITTLE : 0));
}
+}
+
+/* Finish canonicalizing a reloc. Part of this is generic to all
+ ECOFF targets, and that part is in ecoff.c. The rest is done in
+ this backend routine. It must fill in the howto field. */
- return RELSZ;
+static void
+mips_adjust_reloc_in (abfd, intern, rptr)
+ bfd *abfd;
+ const struct internal_reloc *intern;
+ arelent *rptr;
+{
+ if (intern->r_type > MIPS_R_SWITCH)
+ abort ();
+
+ if (! intern->r_extern
+ && (intern->r_type == MIPS_R_GPREL
+ || intern->r_type == MIPS_R_LITERAL))
+ rptr->addend += ecoff_data (abfd)->gp;
+
+ /* If the type is MIPS_R_IGNORE, make sure this is a reference to
+ the absolute section so that the reloc is ignored. */
+ if (intern->r_type == MIPS_R_IGNORE)
+ rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+
+ /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
+ MIPS_R_RELLO reloc, we want the addend field of the BFD relocto
+ hold the value which was originally in the symndx field of the
+ internal MIPS ECOFF reloc. This value was copied into
+ intern->r_offset by mips_swap_reloc_in, and here we copy it into
+ the addend field. */
+ if (intern->r_type == MIPS_R_SWITCH
+ || (! intern->r_extern
+ && (intern->r_type == MIPS_R_RELHI
+ || intern->r_type == MIPS_R_RELLO)))
+ rptr->addend = intern->r_offset;
+
+ rptr->howto = &ecoff_backend (abfd)->howto_table[intern->r_type];
+}
+
+/* Make any adjustments needed to a reloc before writing it out. None
+ are needed for MIPS. */
+
+static void
+mips_adjust_reloc_out (abfd, rel, intern)
+ bfd *abfd;
+ const arelent *rel;
+ struct internal_reloc *intern;
+{
+ /* For a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
+ MIPS_R_RELLO reloc, we must copy rel->addend into
+ intern->r_offset. This will then be written out as the symbol
+ index by mips_ecoff_swap_reloc_out. This operation parallels the
+ action of mips_adjust_reloc_in. */
+ if (intern->r_type == MIPS_R_SWITCH
+ || (! intern->r_extern
+ && (intern->r_type == MIPS_R_RELHI
+ || intern->r_type == MIPS_R_RELLO)))
+ intern->r_offset = rel->addend;
}
/* ECOFF relocs are either against external symbols, or against
relocateable output against an external symbol. */
static bfd_reloc_status_type
-ecoff_generic_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd)
+mips_generic_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
/* Do a REFHI relocation. This has to be done in combination with a
REFLO reloc, because there is a carry from the REFLO to the REFHI.
Here we just save the information we need; we do the actual
- relocation when we see the REFLO. ECOFF requires that the REFLO
- immediately follow the REFHI, so this ought to work. */
+ relocation when we see the REFLO. MIPS ECOFF requires that the
+ REFLO immediately follow the REFHI. As a GNU extension, we permit
+ an arbitrary number of HI relocs to be associated with a single LO
+ reloc. This extension permits gcc to output the HI and LO relocs
+ itself. */
+
+struct mips_hi
+{
+ struct mips_hi *next;
+ bfd_byte *addr;
+ bfd_vma addend;
+};
+
+/* FIXME: This should not be a static variable. */
-static bfd_byte *ecoff_refhi_addr;
-static bfd_vma ecoff_refhi_addend;
+static struct mips_hi *mips_refhi_list;
static bfd_reloc_status_type
-ecoff_refhi_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd)
+mips_refhi_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 ret;
bfd_vma relocation;
+ struct mips_hi *n;
/* If we're relocating, and this an external symbol, we don't want
to change anything. */
}
ret = bfd_reloc_ok;
- if (symbol->section == &bfd_und_section
+ if (bfd_is_und_section (symbol->section)
&& output_bfd == (bfd *) NULL)
ret = bfd_reloc_undefined;
return bfd_reloc_outofrange;
/* Save the information, and let REFLO do the actual relocation. */
- ecoff_refhi_addr = (bfd_byte *) data + reloc_entry->address;
- ecoff_refhi_addend = relocation;
+ n = (struct mips_hi *) 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_refhi_list;
+ mips_refhi_list = n;
if (output_bfd != (bfd *) NULL)
reloc_entry->address += input_section->output_offset;
relocation described above. */
static bfd_reloc_status_type
-ecoff_reflo_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd)
+mips_reflo_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 (ecoff_refhi_addr != (bfd_byte *) NULL)
+ if (mips_refhi_list != NULL)
{
- unsigned long insn;
- unsigned long val;
- unsigned long vallo;
-
- /* Do the REFHI relocation. Note that we actually don't need to
- know anything about the REFLO itself, except where to find
- the low 16 bits of the addend needed by the REFHI. */
- insn = bfd_get_32 (abfd, ecoff_refhi_addr);
- vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
- & 0xffff);
- val = ((insn & 0xffff) << 16) + vallo;
- val += ecoff_refhi_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, ecoff_refhi_addr);
-
- ecoff_refhi_addr = (bfd_byte *) NULL;
+ struct mips_hi *l;
+
+ l = mips_refhi_list;
+ while (l != NULL)
+ {
+ unsigned long insn;
+ unsigned long val;
+ unsigned long vallo;
+ struct mips_hi *next;
+
+ /* Do the REFHI relocation. Note that we actually don't
+ need to know anything about the REFLO itself, except
+ where to find the low 16 bits of the addend needed by the
+ REFHI. */
+ 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);
+
+ next = l->next;
+ free (l);
+ l = next;
+ }
+
+ mips_refhi_list = NULL;
}
/* Now do the REFLO reloc in the usual way. */
- return ecoff_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd);
+ return mips_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
}
/* Do a GPREL relocation. This is a 16 bit value which must become
the offset from the gp register. */
static bfd_reloc_status_type
-ecoff_gprel_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd)
+mips_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_vma gp;
bfd_vma relocation;
unsigned long val;
unsigned long insn;
output_bfd = symbol->section->output_section->owner;
}
- if (symbol->section == &bfd_und_section
+ if (bfd_is_und_section (symbol->section)
&& relocateable == false)
return bfd_reloc_undefined;
BFD. If we can't find it, we're stuck. We cache it in the ECOFF
target data. We don't need to adjust the symbol value for an
external symbol if we are producing relocateable output. */
- if (ecoff_data (output_bfd)->gp == 0
+ gp = _bfd_get_gp_value (output_bfd);
+ if (gp == 0
&& (relocateable == false
|| (symbol->flags & BSF_SECTION_SYM) != 0))
{
if (relocateable != false)
{
/* Make up a value. */
- ecoff_data (output_bfd)->gp =
- symbol->section->output_section->vma + 0x4000;
+ gp = symbol->section->output_section->vma + 0x4000;
+ _bfd_set_gp_value (output_bfd, gp);
}
else
{
count = bfd_get_symcount (output_bfd);
sym = bfd_get_outsymbols (output_bfd);
- /* We should do something more friendly here, but we don't
- have a good reloc status to return. */
if (sym == (asymbol **) NULL)
- abort ();
-
- for (i = 0; i < count; i++, sym++)
+ i = count;
+ else
{
- register CONST char *name;
-
- name = bfd_asymbol_name (*sym);
- if (*name == '_' && strcmp (name, "_gp") == 0)
+ for (i = 0; i < count; i++, sym++)
{
- ecoff_data (output_bfd)->gp = bfd_asymbol_value (*sym);
- break;
+ register CONST char *name;
+
+ name = bfd_asymbol_name (*sym);
+ if (*name == '_' && strcmp (name, "_gp") == 0)
+ {
+ gp = bfd_asymbol_value (*sym);
+ _bfd_set_gp_value (output_bfd, gp);
+ break;
+ }
}
}
- /* We should do something more friendly here, but we don't have
- a good reloc status to return. */
if (i >= count)
- abort ();
+ {
+ /* Only get the error once. */
+ gp = 4;
+ _bfd_set_gp_value (output_bfd, gp);
+ *error_message =
+ (char *) "GP relative relocation when _gp not defined";
+ return bfd_reloc_dangerous;
+ }
}
}
an external symbol. */
if (relocateable == false
|| (symbol->flags & BSF_SECTION_SYM) != 0)
- val += relocation - ecoff_data (output_bfd)->gp;
+ val += relocation - gp;
insn = (insn &~ 0xffff) | (val & 0xffff);
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
/* Make sure it fit in 16 bits. */
if (val >= 0x8000 && val < 0xffff8000)
- return bfd_reloc_outofrange;
+ return bfd_reloc_overflow;
return bfd_reloc_ok;
}
-/* How to process the various relocs types. */
-
-static reloc_howto_type ecoff_howto_table[] =
-{
- /* Reloc type 0 is ignored. The reloc reading code ensures that
- this is a reference to the .abs section, which will cause
- bfd_perform_relocation to do nothing. */
- HOWTO (ECOFF_R_IGNORE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- false, /* complain_on_overflow */
- 0, /* special_function */
- "IGNORE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A 16 bit reference to a symbol, normally from a data section. */
- HOWTO (ECOFF_R_REFHALF, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_generic_reloc, /* special_function */
- "REFHALF", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A 32 bit reference to a symbol, normally from a data section. */
- HOWTO (ECOFF_R_REFWORD, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_generic_reloc, /* special_function */
- "REFWORD", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A 26 bit absolute jump address. */
- HOWTO (ECOFF_R_JMPADDR, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_generic_reloc, /* special_function */
- "JMPADDR", /* name */
- true, /* partial_inplace */
- 0x3ffffff, /* src_mask */
- 0x3ffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The high 16 bits of a symbol value. Handled by the function
- ecoff_refhi_reloc. */
- HOWTO (ECOFF_R_REFHI, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_refhi_reloc, /* special_function */
- "REFHI", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The low 16 bits of a symbol value. */
- HOWTO (ECOFF_R_REFLO, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_reflo_reloc, /* special_function */
- "REFLO", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A reference to an offset from the gp register. Handled by the
- function ecoff_gprel_reloc. */
- HOWTO (ECOFF_R_GPREL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_gprel_reloc, /* special_function */
- "GPREL", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A reference to a literal using an offset from the gp register.
- Handled by the function ecoff_gprel_reloc. */
- HOWTO (ECOFF_R_LITERAL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize (obsolete) */
- false, /* pc_relative */
- 0, /* bitpos */
- false, /* absolute (obsolete) */
- true, /* complain_on_overflow */
- ecoff_gprel_reloc, /* special_function */
- "LITERAL", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false) /* pcrel_offset */
-};
+/* Do a RELHI relocation. We do this in conjunction with a RELLO
+ reloc, just as REFHI and REFLO are done together. RELHI and RELLO
+ are Cygnus extensions used when generating position independent
+ code for embedded systems. */
-#define ECOFF_HOWTO_COUNT \
- (sizeof ecoff_howto_table / sizeof ecoff_howto_table[0])
+/* FIXME: This should not be a static variable. */
-/* Read in the relocs for a section. */
+static struct mips_hi *mips_relhi_list;
-static boolean
-ecoff_slurp_reloc_table (abfd, section, symbols)
+static bfd_reloc_status_type
+mips_relhi_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
bfd *abfd;
- asection *section;
- asymbol **symbols;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
{
- RELOC *external_relocs;
- arelent *internal_relocs;
- arelent *rptr;
- unsigned int i;
-
- if (section->relocation != (arelent *) NULL
- || section->reloc_count == 0
- || (section->flags & SEC_CONSTRUCTOR) != 0)
- return true;
+ bfd_reloc_status_type ret;
+ bfd_vma relocation;
+ struct mips_hi *n;
- if (ecoff_slurp_symbol_table (abfd) == false)
- return false;
-
- internal_relocs = (arelent *) bfd_alloc (abfd,
- (sizeof (arelent)
- * section->reloc_count));
- external_relocs = (RELOC *) bfd_alloc (abfd, RELSZ * section->reloc_count);
- if (internal_relocs == (arelent *) NULL
- || external_relocs == (RELOC *) NULL)
+ /* If this is a reloc against a section symbol, then it is correct
+ in the object file. The only time we want to change this case is
+ when we are relaxing, and that is handled entirely by
+ mips_relocate_section and never calls this function. */
+ if ((symbol->flags & BSF_SECTION_SYM) != 0)
{
- bfd_error = no_memory;
- return false;
+ if (output_bfd != (bfd *) NULL)
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
}
- if (bfd_seek (abfd, section->rel_filepos, SEEK_SET) != 0)
- return false;
- if (bfd_read (external_relocs, 1, RELSZ * section->reloc_count, abfd)
- != RELSZ * section->reloc_count)
+
+ /* This is an external symbol. If we're relocating, we don't want
+ to change anything. */
+ if (output_bfd != (bfd *) NULL)
{
- bfd_error = system_call_error;
- return false;
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
}
- for (i = 0, rptr = internal_relocs; i < section->reloc_count; i++, rptr++)
- {
- struct internal_reloc intern;
+ ret = bfd_reloc_ok;
+ 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;
- ecoff_swap_reloc_in (abfd, external_relocs + i, &intern);
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
- if (intern.r_type > ECOFF_R_LITERAL)
- abort ();
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
- if (intern.r_extern)
- {
- /* r_symndx is an index into the external symbols. */
- BFD_ASSERT (intern.r_symndx >= 0
- && (intern.r_symndx
- < ecoff_data (abfd)->symbolic_header.iextMax));
- rptr->sym_ptr_ptr = symbols + intern.r_symndx;
- rptr->addend = 0;
- }
- else
- {
- CONST char *sec_name;
- asection *sec;
+ /* Save the information, and let RELLO do the actual relocation. */
+ n = (struct mips_hi *) 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_relhi_list;
+ mips_relhi_list = n;
- /* r_symndx is a section key. */
- switch (intern.r_symndx)
- {
- case RELOC_SECTION_TEXT: sec_name = ".text"; break;
- case RELOC_SECTION_RDATA: sec_name = ".rdata"; break;
- case RELOC_SECTION_DATA: sec_name = ".data"; break;
- case RELOC_SECTION_SDATA: sec_name = ".sdata"; break;
- case RELOC_SECTION_SBSS: sec_name = ".sbss"; break;
- case RELOC_SECTION_BSS: sec_name = ".bss"; break;
- case RELOC_SECTION_INIT: sec_name = ".init"; break;
- case RELOC_SECTION_LIT8: sec_name = ".lit8"; break;
- case RELOC_SECTION_LIT4: sec_name = ".lit4"; break;
- default: abort ();
- }
+ if (output_bfd != (bfd *) NULL)
+ reloc_entry->address += input_section->output_offset;
- sec = bfd_get_section_by_name (abfd, sec_name);
- if (sec == (asection *) NULL)
- abort ();
- rptr->sym_ptr_ptr = sec->symbol_ptr_ptr;
+ return ret;
+}
+
+/* Do a RELLO relocation. This is a straightforward 16 bit PC
+ relative relocation; this function exists in order to do the RELHI
+ relocation described above. */
+
+static bfd_reloc_status_type
+mips_rello_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 (mips_relhi_list != NULL)
+ {
+ struct mips_hi *l;
- rptr->addend = - bfd_get_section_vma (abfd, sec);
- if (intern.r_type == ECOFF_R_GPREL
- || intern.r_type == ECOFF_R_LITERAL)
- rptr->addend += ecoff_data (abfd)->gp;
+ l = mips_relhi_list;
+ while (l != NULL)
+ {
+ unsigned long insn;
+ unsigned long val;
+ unsigned long vallo;
+ struct mips_hi *next;
+
+ /* Do the RELHI relocation. Note that we actually don't
+ need to know anything about the RELLO itself, except
+ where to find the low 16 bits of the addend needed by the
+ RELHI. */
+ 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;
+
+ /* If the symbol is defined, make val PC relative. If the
+ symbol is not defined we don't want to do this, because
+ we don't want the value in the object file to incorporate
+ the address of the reloc. */
+ if (! bfd_is_und_section (bfd_get_section (symbol))
+ && ! bfd_is_com_section (bfd_get_section (symbol)))
+ val -= (input_section->output_section->vma
+ + input_section->output_offset
+ + reloc_entry->address);
+
+ /* 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);
+
+ next = l->next;
+ free (l);
+ l = next;
}
- rptr->address = intern.r_vaddr - bfd_get_section_vma (abfd, section);
- rptr->howto = &ecoff_howto_table[intern.r_type];
-
- /* If the type is ECOFF_R_IGNORE, make sure this is a reference
- to the absolute section so that the reloc is ignored. */
- if (intern.r_type == ECOFF_R_IGNORE)
- rptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
+ mips_relhi_list = NULL;
}
- bfd_release (abfd, external_relocs);
+ /* If this is a reloc against a section symbol, then it is correct
+ in the object file. The only time we want to change this case is
+ when we are relaxing, and that is handled entirely by
+ mips_relocate_section and never calls this function. */
+ if ((symbol->flags & BSF_SECTION_SYM) != 0)
+ {
+ if (output_bfd != (bfd *) NULL)
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
- section->relocation = internal_relocs;
+ /* bfd_perform_relocation does not handle pcrel_offset relocations
+ correctly when generating a relocateable file, so handle them
+ directly here. */
+ if (output_bfd != (bfd *) NULL)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
- return true;
+ /* Now do the RELLO reloc in the usual way. */
+ return mips_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
}
-/* Get a canonical list of relocs. */
+/* This is the special function for the MIPS_R_SWITCH reloc. This
+ special reloc is normally correct in the object file, and only
+ requires special handling when relaxing. We don't want
+ bfd_perform_relocation to tamper with it at all. */
-static unsigned int
-ecoff_canonicalize_reloc (abfd, section, relptr, symbols)
+/*ARGSUSED*/
+static bfd_reloc_status_type
+mips_switch_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
bfd *abfd;
- asection *section;
- arelent **relptr;
- asymbol **symbols;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
{
- unsigned int count;
-
- if (section->flags & SEC_CONSTRUCTOR)
- {
- arelent_chain *chain;
-
- /* This section has relocs made up by us, not the file, so take
- them out of their chain and place them into the data area
- provided. */
- for (count = 0, chain = section->constructor_chain;
- count < section->reloc_count;
- count++, chain = chain->next)
- *relptr++ = &chain->relent;
- }
- else
- {
- arelent *tblptr;
-
- if (ecoff_slurp_reloc_table (abfd, section, symbols) == false)
- return 0;
-
- tblptr = section->relocation;
- if (tblptr == (arelent *) NULL)
- return 0;
-
- for (count = 0; count < section->reloc_count; count++)
- *relptr++ = tblptr++;
- }
-
- *relptr = (arelent *) NULL;
-
- return section->reloc_count;
+ return bfd_reloc_ok;
}
/* Get the howto structure for a generic reloc type. */
-static CONST struct reloc_howto_struct *
-ecoff_bfd_reloc_type_lookup (abfd, code)
+static reloc_howto_type *
+mips_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
- int ecoff_type;
+ int mips_type;
switch (code)
{
case BFD_RELOC_16:
- ecoff_type = ECOFF_R_REFHALF;
+ mips_type = MIPS_R_REFHALF;
break;
case BFD_RELOC_32:
- ecoff_type = ECOFF_R_REFWORD;
+ case BFD_RELOC_CTOR:
+ mips_type = MIPS_R_REFWORD;
break;
case BFD_RELOC_MIPS_JMP:
- ecoff_type = ECOFF_R_JMPADDR;
+ mips_type = MIPS_R_JMPADDR;
break;
case BFD_RELOC_HI16_S:
- ecoff_type = ECOFF_R_REFHI;
+ mips_type = MIPS_R_REFHI;
break;
case BFD_RELOC_LO16:
- ecoff_type = ECOFF_R_REFLO;
+ mips_type = MIPS_R_REFLO;
break;
case BFD_RELOC_MIPS_GPREL:
- ecoff_type = ECOFF_R_GPREL;
+ mips_type = MIPS_R_GPREL;
+ break;
+ case BFD_RELOC_MIPS_LITERAL:
+ mips_type = MIPS_R_LITERAL;
+ break;
+ case BFD_RELOC_16_PCREL_S2:
+ mips_type = MIPS_R_PCREL16;
+ break;
+ case BFD_RELOC_PCREL_HI16_S:
+ mips_type = MIPS_R_RELHI;
+ break;
+ case BFD_RELOC_PCREL_LO16:
+ mips_type = MIPS_R_RELLO;
+ break;
+ case BFD_RELOC_GPREL32:
+ mips_type = MIPS_R_SWITCH;
break;
default:
- return (CONST struct reloc_howto_struct *) NULL;
+ return (reloc_howto_type *) NULL;
}
- return &ecoff_howto_table[ecoff_type];
+ return &ecoff_backend (abfd)->howto_table[mips_type];
}
\f
-/* Provided a BFD, a section and an offset into the section, calculate
- and return the name of the source file and the line nearest to the
- wanted location. */
+/* A helper routine for mips_relocate_section which handles the REFHI
+ and RELHI relocations. The REFHI relocation must be followed by a
+ REFLO relocation (and RELHI by a RELLO), and the addend used is
+ formed from the addends of both instructions. */
-static boolean
-ecoff_find_nearest_line (abfd,
- section,
- ignore_symbols,
- offset,
- filename_ptr,
- functionname_ptr,
- retline_ptr)
- bfd *abfd;
- asection *section;
- asymbol **ignore_symbols;
- bfd_vma offset;
- CONST char **filename_ptr;
- CONST char **functionname_ptr;
- unsigned int *retline_ptr;
+static void
+mips_relocate_hi (refhi, reflo, input_bfd, input_section, contents, adjust,
+ relocation, pcrel)
+ struct internal_reloc *refhi;
+ struct internal_reloc *reflo;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ size_t adjust;
+ bfd_vma relocation;
+ boolean pcrel;
{
- FDR *fdr_ptr;
- FDR *fdr_start;
- FDR *fdr_end;
- FDR *fdr_hold;
- struct pdr_ext *pdr_ptr;
- struct pdr_ext *pdr_end;
- PDR pdr;
- unsigned char *line_ptr;
- unsigned char *line_end;
- int lineno;
-
- /* If we're not in the .text section, we don't have any line
- numbers. */
- if (strcmp (section->name, _TEXT) != 0
- || offset < ecoff_data (abfd)->text_start
- || offset >= ecoff_data (abfd)->text_end)
- return false;
-
- /* Make sure we have the FDR's. */
- if (ecoff_slurp_symbolic_info (abfd) == false
- || bfd_get_symcount (abfd) == 0)
- return false;
-
- /* Each file descriptor (FDR) has a memory address. Here we track
- down which FDR we want. The FDR's are stored in increasing
- memory order. If speed is ever important, this can become a
- binary search. We must ignore FDR's with no PDR entries; they
- will have the adr of the FDR before or after them. */
- fdr_start = ecoff_data (abfd)->fdr;
- fdr_end = fdr_start + ecoff_data (abfd)->symbolic_header.ifdMax;
- fdr_hold = (FDR *) NULL;
- for (fdr_ptr = fdr_start; fdr_ptr < fdr_end; fdr_ptr++)
- {
- if (fdr_ptr->cpd == 0)
- continue;
- if (offset < fdr_ptr->adr)
- break;
- fdr_hold = fdr_ptr;
- }
- if (fdr_hold == (FDR *) NULL)
- return false;
- fdr_ptr = fdr_hold;
-
- /* Each FDR has a list of procedure descriptors (PDR). PDR's also
- have an address, which is relative to the FDR address, and are
- also stored in increasing memory order. */
- offset -= fdr_ptr->adr;
- pdr_ptr = ecoff_data (abfd)->external_pdr + fdr_ptr->ipdFirst;
- pdr_end = pdr_ptr + fdr_ptr->cpd;
- ecoff_swap_pdr_in (abfd, pdr_ptr, &pdr);
-
- /* The address of the first PDR is an offset which applies to the
- addresses of all the PDR's. */
- offset += pdr.adr;
-
- for (pdr_ptr++; pdr_ptr < pdr_end; pdr_ptr++)
- {
- ecoff_swap_pdr_in (abfd, pdr_ptr, &pdr);
- if (offset < pdr.adr)
- break;
- }
-
- /* Now we can look for the actual line number. The line numbers are
- stored in a very funky format, which I won't try to describe.
- Note that right here pdr_ptr and pdr hold the PDR *after* the one
- we want; we need this to compute line_end. */
- line_end = ecoff_data (abfd)->line;
- if (pdr_ptr == pdr_end)
- line_end += fdr_ptr->cbLineOffset + fdr_ptr->cbLine;
- else
- line_end += fdr_ptr->cbLineOffset + pdr.cbLineOffset;
-
- /* Now change pdr and pdr_ptr to the one we want. */
- pdr_ptr--;
- ecoff_swap_pdr_in (abfd, pdr_ptr, &pdr);
-
- offset -= pdr.adr;
- lineno = pdr.lnLow;
- line_ptr = (ecoff_data (abfd)->line
- + fdr_ptr->cbLineOffset
- + pdr.cbLineOffset);
- while (line_ptr < line_end)
- {
- int delta;
- int count;
-
- delta = *line_ptr >> 4;
- if (delta >= 0x8)
- delta -= 0x10;
- count = (*line_ptr & 0xf) + 1;
- ++line_ptr;
- if (delta == -8)
- {
- delta = (((line_ptr[0]) & 0xff) << 8) + ((line_ptr[1]) & 0xff);
- if (delta >= 0x8000)
- delta -= 0x10000;
- line_ptr += 2;
- }
- lineno += delta;
- if (offset < count * 4)
- break;
- offset -= count * 4;
- }
+ unsigned long insn;
+ unsigned long val;
+ unsigned long vallo;
+
+ insn = bfd_get_32 (input_bfd,
+ contents + adjust + refhi->r_vaddr - input_section->vma);
+ vallo = (bfd_get_32 (input_bfd,
+ contents + adjust + reflo->r_vaddr - input_section->vma)
+ & 0xffff);
+ val = ((insn & 0xffff) << 16) + vallo;
+ val += relocation;
+
+ /* 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 fdr_ptr->rss is -1, then this file does not have full symbols,
- at least according to gdb/mipsread.c. */
- if (fdr_ptr->rss == -1)
- {
- *filename_ptr = NULL;
- if (pdr.isym == -1)
- *functionname_ptr = NULL;
- else
- {
- EXTR proc_ext;
+ if (pcrel)
+ val -= (input_section->output_section->vma
+ + input_section->output_offset
+ + (reflo->r_vaddr - input_section->vma + adjust));
- ecoff_swap_ext_in (abfd,
- (ecoff_data (abfd)->external_ext
- + pdr.isym),
- &proc_ext);
- *functionname_ptr = ecoff_data (abfd)->ssext + proc_ext.asym.iss;
- }
- }
- else
- {
- SYMR proc_sym;
-
- *filename_ptr = ecoff_data (abfd)->ss + fdr_ptr->issBase + fdr_ptr->rss;
- ecoff_swap_sym_in (abfd,
- (ecoff_data (abfd)->external_sym
- + fdr_ptr->isymBase
- + pdr.isym),
- &proc_sym);
- *functionname_ptr = (ecoff_data (abfd)->ss
- + fdr_ptr->issBase
- + proc_sym.iss);
- }
- *retline_ptr = lineno;
- return true;
-}
-\f
-/* We can't use the generic linking routines for ECOFF, because we
- have to handle all the debugging information. The generic link
- routine just works out the section contents and attaches a list of
- symbols.
-
- We link by looping over all the seclets. We make two passes. On
- the first we set the actual section contents and determine the size
- of the debugging information. On the second we accumulate the
- debugging information and write it out.
-
- This currently always accumulates the debugging information, which
- is incorrect, because it ignores the -s and -S options of the
- linker. The linker needs to be modified to give us that
- information in a more useful format (currently it just provides a
- list of symbols which should appear in the output file). */
-
-/* Clear the output_has_begun flag for all the input BFD's. We use it
- to avoid linking in the debugging information for a BFD more than
- once. */
+ if ((val & 0x8000) != 0)
+ val += 0x10000;
-static void
-ecoff_clear_output_flags (abfd)
- bfd *abfd;
-{
- register asection *o;
- register bfd_seclet_type *p;
-
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- for (p = o->seclets_head;
- p != (bfd_seclet_type *) NULL;
- p = p->next)
- if (p->type == bfd_indirect_seclet)
- p->u.indirect.section->owner->output_has_begun = false;
+ insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
+ bfd_put_32 (input_bfd, (bfd_vma) insn,
+ contents + adjust + refhi->r_vaddr - input_section->vma);
}
-/* Handle an indirect seclet on the first pass. Set the contents of
- the output section, and accumulate the debugging information if
- any. */
+/* Relocate a section while linking a MIPS ECOFF file. */
static boolean
-ecoff_rel (output_bfd, seclet, output_section, data, relocateable)
+mips_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, external_relocs)
bfd *output_bfd;
- bfd_seclet_type *seclet;
- asection *output_section;
- PTR data;
- boolean relocateable;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ PTR external_relocs;
{
- bfd *input_bfd;
- HDRR *output_symhdr;
- HDRR *input_symhdr;
-
- if ((output_section->flags & SEC_HAS_CONTENTS)
- && !(output_section->flags & SEC_NEVER_LOAD)
- && (output_section->flags & SEC_LOAD)
- && seclet->size)
- {
- data = (PTR) bfd_get_relocated_section_contents (output_bfd,
- seclet,
- data,
- relocateable);
- if (bfd_set_section_contents (output_bfd,
- output_section,
- data,
- seclet->offset,
- seclet->size)
- == false)
- {
- abort();
- }
- }
-
- input_bfd = seclet->u.indirect.section->owner;
-
- /* We want to figure out how much space will be required to
- incorporate all the debugging information from input_bfd. We use
- the output_has_begun field to avoid adding it in more than once.
- The actual incorporation is done in the second pass, in
- ecoff_get_debug. The code has to parallel that code in its
- manipulations of output_symhdr. */
-
- if (input_bfd->output_has_begun)
- return true;
- input_bfd->output_has_begun = true;
+ asection **symndx_to_section;
+ struct ecoff_link_hash_entry **sym_hashes;
+ bfd_vma gp;
+ boolean gp_undefined;
+ size_t adjust;
+ long *offsets;
+ struct external_reloc *ext_rel;
+ struct external_reloc *ext_rel_end;
+ unsigned int i;
+ boolean got_lo;
+ struct internal_reloc lo_int_rel;
+
+ BFD_ASSERT (input_bfd->xvec->byteorder
+ == output_bfd->xvec->byteorder);
+
+ /* We keep a table mapping the symndx found in an internal reloc to
+ the appropriate section. This is faster than looking up the
+ section by name each time. */
+ symndx_to_section = ecoff_data (input_bfd)->symndx_to_section;
+ if (symndx_to_section == (asection **) NULL)
+ {
+ symndx_to_section = ((asection **)
+ bfd_alloc (input_bfd,
+ (NUM_RELOC_SECTIONS
+ * sizeof (asection *))));
+ if (!symndx_to_section)
+ return false;
- output_symhdr = &ecoff_data (output_bfd)->symbolic_header;
+ symndx_to_section[RELOC_SECTION_NONE] = NULL;
+ symndx_to_section[RELOC_SECTION_TEXT] =
+ bfd_get_section_by_name (input_bfd, ".text");
+ symndx_to_section[RELOC_SECTION_RDATA] =
+ bfd_get_section_by_name (input_bfd, ".rdata");
+ symndx_to_section[RELOC_SECTION_DATA] =
+ bfd_get_section_by_name (input_bfd, ".data");
+ symndx_to_section[RELOC_SECTION_SDATA] =
+ bfd_get_section_by_name (input_bfd, ".sdata");
+ symndx_to_section[RELOC_SECTION_SBSS] =
+ bfd_get_section_by_name (input_bfd, ".sbss");
+ symndx_to_section[RELOC_SECTION_BSS] =
+ bfd_get_section_by_name (input_bfd, ".bss");
+ symndx_to_section[RELOC_SECTION_INIT] =
+ bfd_get_section_by_name (input_bfd, ".init");
+ symndx_to_section[RELOC_SECTION_LIT8] =
+ bfd_get_section_by_name (input_bfd, ".lit8");
+ symndx_to_section[RELOC_SECTION_LIT4] =
+ bfd_get_section_by_name (input_bfd, ".lit4");
+ symndx_to_section[RELOC_SECTION_XDATA] = NULL;
+ symndx_to_section[RELOC_SECTION_PDATA] = NULL;
+ symndx_to_section[RELOC_SECTION_FINI] =
+ bfd_get_section_by_name (input_bfd, ".fini");
+ symndx_to_section[RELOC_SECTION_LITA] = NULL;
+ symndx_to_section[RELOC_SECTION_ABS] = NULL;
+
+ ecoff_data (input_bfd)->symndx_to_section = symndx_to_section;
+ }
+
+ sym_hashes = ecoff_data (input_bfd)->sym_hashes;
+
+ gp = _bfd_get_gp_value (output_bfd);
+ if (gp == 0)
+ gp_undefined = true;
+ else
+ gp_undefined = false;
- if (input_bfd->xvec->flavour != bfd_target_ecoff_flavour)
- {
- asymbol **symbols;
- asymbol **sym_ptr;
- asymbol **sym_end;
+ got_lo = false;
- /* We just accumulate local symbols from a non-ECOFF BFD. The
- external symbols are handled separately. */
+ adjust = 0;
- symbols = (asymbol **) bfd_alloc (output_bfd,
- get_symtab_upper_bound (input_bfd));
- if (symbols == (asymbol **) NULL)
+ if (ecoff_section_data (input_bfd, input_section) == NULL)
+ offsets = NULL;
+ else
+ offsets = ecoff_section_data (input_bfd, input_section)->offsets;
+
+ ext_rel = (struct external_reloc *) external_relocs;
+ ext_rel_end = ext_rel + input_section->reloc_count;
+ for (i = 0; ext_rel < ext_rel_end; ext_rel++, i++)
+ {
+ struct internal_reloc int_rel;
+ boolean use_lo;
+ bfd_vma addend;
+ reloc_howto_type *howto;
+ struct ecoff_link_hash_entry *h = NULL;
+ asection *s = NULL;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+
+ if (! got_lo)
+ mips_ecoff_swap_reloc_in (input_bfd, (PTR) ext_rel, &int_rel);
+ else
{
- bfd_error = no_memory;
- return false;
+ int_rel = lo_int_rel;
+ got_lo = false;
}
- sym_end = symbols + bfd_canonicalize_symtab (input_bfd, symbols);
- for (sym_ptr = symbols; sym_ptr < sym_end; sym_ptr++)
+ BFD_ASSERT (int_rel.r_type < ecoff_backend (abfd)->howto_table_size);
+
+ /* The REFHI and RELHI relocs requires special handling. they
+ must be followed by a REFLO or RELLO reloc, respectively, and
+ the addend is formed from both relocs. */
+ if (int_rel.r_type == MIPS_R_REFHI
+ || int_rel.r_type == MIPS_R_RELHI)
{
- size_t len;
+ struct external_reloc *lo_ext_rel;
+
+ /* As a GNU extension, permit an arbitrary number of REFHI
+ or RELHI relocs before the REFLO or RELLO reloc. This
+ permits gcc to emit the HI and LO relocs itself. */
+ for (lo_ext_rel = ext_rel + 1;
+ lo_ext_rel < ext_rel_end;
+ lo_ext_rel++)
+ {
+ mips_ecoff_swap_reloc_in (input_bfd, (PTR) lo_ext_rel,
+ &lo_int_rel);
+ if (lo_int_rel.r_type != int_rel.r_type)
+ break;
+ }
- len = strlen ((*sym_ptr)->name);
- if (((*sym_ptr)->flags & BSF_EXPORT) == 0)
+ if (lo_ext_rel < ext_rel_end
+ && (lo_int_rel.r_type
+ == (int_rel.r_type == MIPS_R_REFHI
+ ? MIPS_R_REFLO
+ : MIPS_R_RELLO))
+ && int_rel.r_extern == lo_int_rel.r_extern
+ && int_rel.r_symndx == lo_int_rel.r_symndx)
{
- ++output_symhdr->isymMax;
- output_symhdr->issMax += len + 1;
+ use_lo = true;
+ if (lo_ext_rel == ext_rel + 1)
+ got_lo = true;
}
}
- bfd_release (output_bfd, (PTR) symbols);
-
- ++output_symhdr->ifdMax;
-
- return true;
- }
-
- /* We simply add in the information from another ECOFF BFD. First
- we make sure we have the symbolic information. */
- if (ecoff_slurp_symbol_table (input_bfd) == false)
- return false;
- if (bfd_get_symcount (input_bfd) == 0)
- return true;
-
- input_symhdr = &ecoff_data (input_bfd)->symbolic_header;
-
- /* Figure out how much information we are going to be putting in.
- The external symbols are handled separately. */
- output_symhdr->ilineMax += input_symhdr->ilineMax;
- output_symhdr->cbLine += input_symhdr->cbLine;
- output_symhdr->idnMax += input_symhdr->idnMax;
- output_symhdr->ipdMax += input_symhdr->ipdMax;
- output_symhdr->isymMax += input_symhdr->isymMax;
- output_symhdr->ioptMax += input_symhdr->ioptMax;
- output_symhdr->iauxMax += input_symhdr->iauxMax;
- output_symhdr->issMax += input_symhdr->issMax;
- output_symhdr->ifdMax += input_symhdr->ifdMax;
-
- /* The RFD's are special, since we create them if needed. */
- if (input_symhdr->crfd > 0)
- output_symhdr->crfd += input_symhdr->crfd;
- else
- output_symhdr->crfd += input_symhdr->ifdMax;
-
- return true;
-}
+ howto = &ecoff_backend (abfd)->howto_table[int_rel.r_type];
+
+ /* The SWITCH reloc must be handled specially. This reloc is
+ marks the location of a difference between two portions of an
+ object file. The symbol index does not reference a symbol,
+ but is actually the offset from the reloc to the subtrahend
+ of the difference. This reloc is correct in the object file,
+ and needs no further adjustment, unless we are relaxing. If
+ we are relaxing, we may have to add in an offset. Since no
+ symbols are involved in this reloc, we handle it completely
+ here. */
+ if (int_rel.r_type == MIPS_R_SWITCH)
+ {
+ if (offsets != NULL
+ && offsets[i] != 0)
+ {
+ r = _bfd_relocate_contents (howto, input_bfd,
+ (bfd_vma) offsets[i],
+ (contents
+ + adjust
+ + int_rel.r_vaddr
+ - input_section->vma));
+ BFD_ASSERT (r == bfd_reloc_ok);
+ }
-/* Handle an arbitrary seclet on the first pass. */
+ continue;
+ }
-static boolean
-ecoff_dump_seclet (abfd, seclet, section, data, relocateable)
- bfd *abfd;
- bfd_seclet_type *seclet;
- asection *section;
- PTR data;
- boolean relocateable;
-{
- switch (seclet->type)
- {
- case bfd_indirect_seclet:
- /* The contents of this section come from another one somewhere
- else. */
- return ecoff_rel (abfd, seclet, section, data, relocateable);
-
- case bfd_fill_seclet:
- /* Fill in the section with fill.value. This is used to pad out
- sections, but we must avoid padding the .bss section. */
- if ((section->flags & SEC_HAS_CONTENTS) == 0)
+ if (int_rel.r_extern)
{
- if (seclet->u.fill.value != 0)
+ h = sym_hashes[int_rel.r_symndx];
+ /* If h is NULL, that means that there is a reloc against an
+ external symbol which we thought was just a debugging
+ symbol. This should not happen. */
+ if (h == (struct ecoff_link_hash_entry *) NULL)
abort ();
}
else
{
- char *d = (char *) bfd_alloc (abfd, seclet->size);
- unsigned int i;
- boolean ret;
-
- for (i = 0; i < seclet->size; i+=2)
- d[i] = seclet->u.fill.value >> 8;
- for (i = 1; i < seclet->size; i+=2)
- d[i] = seclet->u.fill.value;
- ret = bfd_set_section_contents (abfd, section, d, seclet->offset,
- seclet->size);
- bfd_release (abfd, (PTR) d);
- return ret;
- }
- break;
-
- default:
- abort();
- }
-
- return true;
-}
-
-/* Add a string to the debugging information we are accumulating for a
- file. Return the offset from the fdr string base or from the
- external string base. */
-
-static long
-ecoff_add_string (output_bfd, fdr, string, external)
- bfd *output_bfd;
- FDR *fdr;
- CONST char *string;
- boolean external;
-{
- HDRR *symhdr;
- size_t len;
- long ret;
-
- symhdr = &ecoff_data (output_bfd)->symbolic_header;
- len = strlen (string);
- if (external)
- {
- strcpy (ecoff_data (output_bfd)->ssext + symhdr->issExtMax, string);
- ret = symhdr->issExtMax;
- symhdr->issExtMax += len + 1;
- }
- else
- {
- strcpy (ecoff_data (output_bfd)->ss + symhdr->issMax, string);
- ret = fdr->cbSs;
- symhdr->issMax += len + 1;
- fdr->cbSs += len + 1;
- }
- return ret;
-}
-
-/* Accumulate the debugging information from an input section. */
-
-static boolean
-ecoff_get_debug (output_bfd, seclet, section, relocateable)
- bfd *output_bfd;
- bfd_seclet_type *seclet;
- asection *section;
- boolean relocateable;
-{
- bfd *input_bfd;
- HDRR *output_symhdr;
- HDRR *input_symhdr;
- ecoff_data_type *output_ecoff;
- ecoff_data_type *input_ecoff;
- unsigned int count;
- struct sym_ext *sym_out;
- ecoff_symbol_type *esym_ptr;
- ecoff_symbol_type *esym_end;
- unsigned long pdr_off;
- FDR *fdr_ptr;
- FDR *fdr_end;
- struct fdr_ext *fdr_out;
-
- input_bfd = seclet->u.indirect.section->owner;
-
- /* Don't get the information more than once. */
- if (input_bfd->output_has_begun)
- return true;
- input_bfd->output_has_begun = true;
-
- output_ecoff = ecoff_data (output_bfd);
- output_symhdr = &output_ecoff->symbolic_header;
+ if (int_rel.r_symndx < 0 || int_rel.r_symndx >= NUM_RELOC_SECTIONS)
+ s = NULL;
+ else
+ s = symndx_to_section[int_rel.r_symndx];
- if (input_bfd->xvec->flavour != bfd_target_ecoff_flavour)
- {
- FDR fdr;
- asymbol **symbols;
- asymbol **sym_ptr;
- asymbol **sym_end;
-
- /* This is not an ECOFF BFD. Just gather the symbols. */
-
- memset (&fdr, 0, sizeof fdr);
-
- fdr.adr = bfd_get_section_vma (output_bfd, section) + seclet->offset;
- fdr.issBase = output_symhdr->issMax;
- fdr.cbSs = 0;
- fdr.rss = ecoff_add_string (output_bfd,
- &fdr,
- bfd_get_filename (input_bfd),
- false);
- fdr.isymBase = output_symhdr->isymMax;
-
- /* Get the local symbols from the input BFD. */
- symbols = (asymbol **) bfd_alloc (output_bfd,
- get_symtab_upper_bound (input_bfd));
- if (symbols == (asymbol **) NULL)
- {
- bfd_error = no_memory;
- return false;
+ if (s == (asection *) NULL)
+ abort ();
}
- sym_end = symbols + bfd_canonicalize_symtab (input_bfd, symbols);
- /* Handle the local symbols. Any external symbols are handled
- separately. */
- fdr.csym = 0;
- for (sym_ptr = symbols; sym_ptr != sym_end; sym_ptr++)
+ /* The GPREL reloc uses an addend: the difference in the GP
+ values. */
+ if (int_rel.r_type != MIPS_R_GPREL
+ && int_rel.r_type != MIPS_R_LITERAL)
+ addend = 0;
+ else
{
- SYMR internal_sym;
-
- if (((*sym_ptr)->flags & BSF_EXPORT) != 0)
- continue;
- memset (&internal_sym, 0, sizeof internal_sym);
- internal_sym.iss = ecoff_add_string (output_bfd,
- &fdr,
- (*sym_ptr)->name,
- false);
-
- if (bfd_is_com_section ((*sym_ptr)->section)
- || (*sym_ptr)->section == &bfd_und_section)
- internal_sym.value = (*sym_ptr)->value;
+ if (gp_undefined)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info, "GP relative relocation when GP not defined",
+ input_bfd, input_section,
+ int_rel.r_vaddr - input_section->vma)))
+ return false;
+ /* Only give the error once per link. */
+ gp = 4;
+ _bfd_set_gp_value (output_bfd, gp);
+ gp_undefined = false;
+ }
+ if (! int_rel.r_extern)
+ {
+ /* This is a relocation against a section. The current
+ addend in the instruction is the difference between
+ INPUT_SECTION->vma and the GP value of INPUT_BFD. We
+ 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 = ecoff_data (input_bfd)->gp - gp;
+ }
+ else if (! info->relocateable
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ /* This is a relocation against a defined symbol. The
+ current addend in the instruction is simply the
+ desired offset into the symbol (normally zero). We
+ are going to change this into a relocation against a
+ defined symbol, so we want the instruction to 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 = - gp;
+ }
else
- internal_sym.value = ((*sym_ptr)->value
- + (*sym_ptr)->section->output_offset
- + (*sym_ptr)->section->output_section->vma);
- internal_sym.st = stNil;
- internal_sym.sc = scUndefined;
- internal_sym.index = indexNil;
- ecoff_swap_sym_out (output_bfd, &internal_sym,
- (output_ecoff->external_sym
- + output_symhdr->isymMax));
- ++fdr.csym;
- ++output_symhdr->isymMax;
- }
-
- bfd_release (output_bfd, (PTR) symbols);
-
- /* Leave everything else in the FDR zeroed out. This will cause
- the lang field to be langC. The fBigendian field will
- indicate little endian format, but it doesn't matter because
- it only applies to aux fields and there are none. */
-
- ecoff_swap_fdr_out (output_bfd, &fdr,
- (output_ecoff->external_fdr
- + output_symhdr->ifdMax));
- ++output_symhdr->ifdMax;
- return true;
- }
-
- /* This is an ECOFF BFD. We want to grab the information from
- input_bfd and attach it to output_bfd. */
- count = bfd_get_symcount (input_bfd);
- if (count == 0)
- return true;
- input_ecoff = ecoff_data (input_bfd);
- input_symhdr = &input_ecoff->symbolic_header;
-
- /* I think that it is more efficient to simply copy the debugging
- information from the input BFD to the output BFD. Because ECOFF
- uses relative pointers for most of the debugging information,
- only a little of it has to be changed at all. */
-
- /* Swap in the local symbols, adjust their values, and swap them out
- again. The external symbols are handled separately. */
- sym_out = output_ecoff->external_sym + output_symhdr->isymMax;
-
- esym_ptr = ecoff_data (input_bfd)->canonical_symbols;
- esym_end = esym_ptr + count;
- for (; esym_ptr < esym_end; esym_ptr++)
- {
- if (esym_ptr->local)
- {
- SYMR sym;
-
- ecoff_swap_sym_in (input_bfd, esym_ptr->native.lnative, &sym);
-
- /* If we're producing an executable, move common symbols
- into bss. */
- if (relocateable == false)
{
- if (sym.sc == scCommon)
- sym.sc = scBss;
- else if (sym.sc == scSCommon)
- sym.sc = scSBss;
+ /* This is a relocation against an undefined or common
+ symbol. The current addend in the instruction is
+ simply the desired offset into the symbol (normally
+ zero). We are generating relocateable output, and we
+ aren't going to define this symbol, so we just leave
+ the instruction alone. */
+ addend = 0;
}
-
- if (! bfd_is_com_section (esym_ptr->symbol.section)
- && (esym_ptr->symbol.flags & BSF_DEBUGGING) == 0
- && esym_ptr->symbol.section != &bfd_und_section)
- sym.value = (esym_ptr->symbol.value
- + esym_ptr->symbol.section->output_offset
- + esym_ptr->symbol.section->output_section->vma);
- ecoff_swap_sym_out (output_bfd, &sym, sym_out);
- ++sym_out;
- }
- }
-
- /* That should have accounted for all the local symbols in
- input_bfd. */
- BFD_ASSERT ((sym_out - output_ecoff->external_sym) - output_symhdr->isymMax
- == input_symhdr->isymMax);
-
- /* Copy the information that does not need swapping. */
- memcpy (output_ecoff->line + output_symhdr->cbLine,
- input_ecoff->line,
- input_symhdr->cbLine * sizeof (unsigned char));
- memcpy (output_ecoff->external_aux + output_symhdr->iauxMax,
- input_ecoff->external_aux,
- input_symhdr->iauxMax * sizeof (union aux_ext));
- memcpy (output_ecoff->ss + output_symhdr->issMax,
- input_ecoff->ss,
- input_symhdr->issMax * sizeof (char));
-
- /* Some of the information may need to be swapped. */
- if (output_bfd->xvec->header_byteorder_big_p
- == input_bfd->xvec->header_byteorder_big_p)
- {
- /* The two BFD's have the same endianness, so memcpy will
- suffice. */
- memcpy (output_ecoff->external_dnr + output_symhdr->idnMax,
- input_ecoff->external_dnr,
- input_symhdr->idnMax * sizeof (struct dnr_ext));
- memcpy (output_ecoff->external_pdr + output_symhdr->ipdMax,
- input_ecoff->external_pdr,
- input_symhdr->ipdMax * sizeof (struct pdr_ext));
- if (input_symhdr->ipdMax == 0)
- pdr_off = 0;
- else
- {
- PDR pdr;
-
- ecoff_swap_pdr_in (input_bfd, input_ecoff->external_pdr, &pdr);
- pdr_off = pdr.adr;
}
- memcpy (output_ecoff->external_opt + output_symhdr->ioptMax,
- input_ecoff->external_opt,
- input_symhdr->ioptMax * sizeof (struct opt_ext));
- }
- else
- {
- struct dnr_ext *dnr_in;
- struct dnr_ext *dnr_end;
- struct dnr_ext *dnr_out;
- struct pdr_ext *pdr_in;
- struct pdr_ext *pdr_end;
- struct pdr_ext *pdr_out;
- int first_pdr;
- struct opt_ext *opt_in;
- struct opt_ext *opt_end;
- struct opt_ext *opt_out;
-
- /* The two BFD's have different endianness, so we must swap
- everything in and out. This code would always work, but it
- would be slow in the normal case. */
- dnr_in = input_ecoff->external_dnr;
- dnr_end = dnr_in + input_symhdr->idnMax;
- dnr_out = output_ecoff->external_dnr + output_symhdr->idnMax;
- for (; dnr_in < dnr_end; dnr_in++, dnr_out++)
- {
- DNR dnr;
- ecoff_swap_dnr_in (input_bfd, dnr_in, &dnr);
- ecoff_swap_dnr_out (output_bfd, &dnr, dnr_out);
- }
- pdr_in = input_ecoff->external_pdr;
- pdr_end = pdr_in + input_symhdr->ipdMax;
- pdr_out = output_ecoff->external_pdr + output_symhdr->ipdMax;
- first_pdr = 1;
- pdr_off = 0;
- for (; pdr_in < pdr_end; pdr_in++, pdr_out++)
+ /* If we are relaxing, mips_relax_section may have set
+ offsets[i] to some value. A value of 1 means we must expand
+ a PC relative branch into a multi-instruction of sequence,
+ and any other value is an addend. */
+ if (offsets != NULL
+ && offsets[i] != 0)
{
- PDR pdr;
-
- ecoff_swap_pdr_in (input_bfd, pdr_in, &pdr);
- ecoff_swap_pdr_out (output_bfd, &pdr, pdr_out);
- if (first_pdr)
+ BFD_ASSERT (! info->relocateable);
+ BFD_ASSERT (int_rel.r_type == MIPS_R_PCREL16
+ || int_rel.r_type == MIPS_R_RELHI
+ || int_rel.r_type == MIPS_R_RELLO);
+ if (offsets[i] != 1)
+ addend += offsets[i];
+ else
{
- pdr_off = pdr.adr;
- first_pdr = 0;
- }
- }
- opt_in = input_ecoff->external_opt;
- opt_end = opt_in + input_symhdr->ioptMax;
- opt_out = output_ecoff->external_opt + output_symhdr->ioptMax;
- for (; opt_in < opt_end; opt_in++, opt_out++)
- {
- OPTR opt;
-
- ecoff_swap_opt_in (input_bfd, opt_in, &opt);
- ecoff_swap_opt_out (output_bfd, &opt, opt_out);
- }
- }
-
- /* Set ifdbase so that the external symbols know how to adjust their
- ifd values. */
- input_ecoff->ifdbase = output_symhdr->ifdMax;
-
- fdr_ptr = input_ecoff->fdr;
- fdr_end = fdr_ptr + input_symhdr->ifdMax;
- fdr_out = output_ecoff->external_fdr + output_symhdr->ifdMax;
- for (; fdr_ptr < fdr_end; fdr_ptr++, fdr_out++)
- {
- FDR fdr;
-
- fdr = *fdr_ptr;
-
- /* The memory address for this fdr is the address for the seclet
- plus the offset to this fdr within input_bfd. For some
- reason the offset of the first procedure pointer is also
- added in. */
- fdr.adr = (bfd_get_section_vma (output_bfd, section)
- + seclet->offset
- + (fdr_ptr->adr - input_ecoff->fdr->adr)
- + pdr_off);
-
- fdr.issBase += output_symhdr->issMax;
- fdr.isymBase += output_symhdr->isymMax;
- fdr.ilineBase += output_symhdr->ilineMax;
- fdr.ioptBase += output_symhdr->ioptMax;
- fdr.ipdFirst += output_symhdr->ipdMax;
- fdr.iauxBase += output_symhdr->iauxMax;
- fdr.rfdBase += output_symhdr->crfd;
-
- /* If there are no RFD's, we are going to add some. We don't
- want to adjust irfd for this, so that all the FDR's can share
- the RFD's. */
- if (input_symhdr->crfd == 0)
- fdr.crfd = input_symhdr->ifdMax;
-
- if (fdr.cbLine != 0)
- fdr.cbLineOffset += output_symhdr->cbLine;
-
- ecoff_swap_fdr_out (output_bfd, &fdr, fdr_out);
- }
+ bfd_byte *here;
+
+ BFD_ASSERT (int_rel.r_extern
+ && int_rel.r_type == MIPS_R_PCREL16);
+
+ /* Move the rest of the instructions up. */
+ here = (contents
+ + adjust
+ + int_rel.r_vaddr
+ - input_section->vma);
+ memmove (here + PCREL16_EXPANSION_ADJUSTMENT, here,
+ (size_t) (input_section->_raw_size
+ - (int_rel.r_vaddr - input_section->vma)));
+
+ /* Generate the new instructions. */
+ if (! mips_relax_pcrel16 (info, input_bfd, input_section,
+ h, here,
+ (input_section->output_section->vma
+ + input_section->output_offset
+ + (int_rel.r_vaddr
+ - input_section->vma)
+ + adjust)))
+ return false;
- if (input_symhdr->crfd > 0)
- {
- struct rfd_ext *rfd_in;
- struct rfd_ext *rfd_end;
- struct rfd_ext *rfd_out;
-
- /* Swap and adjust the RFD's. RFD's are only created by the
- linker, so this will only be necessary if one of the input
- files is the result of a partial link. Presumably all
- necessary RFD's are present. */
- rfd_in = input_ecoff->external_rfd;
- rfd_end = rfd_in + input_symhdr->crfd;
- rfd_out = output_ecoff->external_rfd + output_symhdr->crfd;
- for (; rfd_in < rfd_end; rfd_in++, rfd_out++)
- {
- RFDT rfd;
+ /* We must adjust everything else up a notch. */
+ adjust += PCREL16_EXPANSION_ADJUSTMENT;
- ecoff_swap_rfd_in (input_bfd, rfd_in, &rfd);
- rfd += output_symhdr->ifdMax;
- ecoff_swap_rfd_out (output_bfd, &rfd, rfd_out);
+ /* mips_relax_pcrel16 handles all the details of this
+ relocation. */
+ continue;
+ }
}
- output_symhdr->crfd += input_symhdr->crfd;
- }
- else
- {
- struct rfd_ext *rfd_out;
- struct rfd_ext *rfd_end;
- RFDT rfd;
-
- /* Create RFD's. Some of the debugging information includes
- relative file indices. These indices are taken as indices to
- the RFD table if there is one, or to the global table if
- there is not. If we did not create RFD's, we would have to
- parse and adjust all the debugging information which contains
- file indices. */
- rfd = output_symhdr->ifdMax;
- rfd_out = output_ecoff->external_rfd + output_symhdr->crfd;
- rfd_end = rfd_out + input_symhdr->ifdMax;
- for (; rfd_out < rfd_end; rfd_out++, rfd++)
- ecoff_swap_rfd_out (output_bfd, &rfd, rfd_out);
- output_symhdr->crfd += input_symhdr->ifdMax;
- }
-
- /* Combine the register masks. */
- {
- int i;
-
- output_ecoff->gprmask |= input_ecoff->gprmask;
- for (i = 0; i < 4; i++)
- output_ecoff->cprmask[i] |= input_ecoff->cprmask[i];
- }
-
- /* Update the counts. */
- output_symhdr->ilineMax += input_symhdr->ilineMax;
- output_symhdr->cbLine += input_symhdr->cbLine;
- output_symhdr->idnMax += input_symhdr->idnMax;
- output_symhdr->ipdMax += input_symhdr->ipdMax;
- output_symhdr->isymMax += input_symhdr->isymMax;
- output_symhdr->ioptMax += input_symhdr->ioptMax;
- output_symhdr->iauxMax += input_symhdr->iauxMax;
- output_symhdr->issMax += input_symhdr->issMax;
- output_symhdr->ifdMax += input_symhdr->ifdMax;
-
- return true;
-}
-/* This is the actual link routine. It makes two passes over all the
- seclets. */
-
-static boolean
-ecoff_bfd_seclet_link (abfd, data, relocateable)
- bfd *abfd;
- PTR data;
- boolean relocateable;
-{
- HDRR *symhdr;
- int ipass;
- register asection *o;
- register bfd_seclet_type *p;
- asymbol **sym_ptr_ptr;
- bfd_size_type size;
- char *raw;
-
- /* We accumulate the debugging information counts in the symbolic
- header. */
- symhdr = &ecoff_data (abfd)->symbolic_header;
- symhdr->magic = magicSym;
- /* FIXME: What should the version stamp be? */
- symhdr->vstamp = 0;
- symhdr->ilineMax = 0;
- symhdr->cbLine = 0;
- symhdr->idnMax = 0;
- symhdr->ipdMax = 0;
- symhdr->isymMax = 0;
- symhdr->ioptMax = 0;
- symhdr->iauxMax = 0;
- symhdr->issMax = 0;
- symhdr->issExtMax = 0;
- symhdr->ifdMax = 0;
- symhdr->crfd = 0;
- symhdr->iextMax = 0;
-
- /* We need to copy over the debugging symbols from each input BFD.
- When we do this copying, we have to adjust the text address in
- the FDR structures, so we have to know the text address used for
- the input BFD. Since we only want to copy the symbols once per
- input BFD, but we are going to look at each input BFD multiple
- times (once for each section it provides), we arrange to always
- look at the text section first. That means that when we copy the
- debugging information, we always know the text address. So we
- actually do each pass in two sub passes; first the text sections,
- then the non-text sections. We use the output_has_begun flag to
- determine whether we have copied over the debugging information
- yet. */
-
- /* Do the first pass: set the output section contents and count the
- debugging information. */
- ecoff_clear_output_flags (abfd);
- for (ipass = 0; ipass < 2; ipass++)
- {
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
+ /* If we are relaxing, and this is a reloc against the .text
+ segment, we may need to adjust it if some branches have been
+ expanded. The reloc types which are likely to occur in the
+ .text section are handled efficiently by mips_relax_section,
+ and thus do not need to be handled here. */
+ if (ecoff_data (input_bfd)->debug_info.adjust != NULL
+ && ! int_rel.r_extern
+ && int_rel.r_symndx == RELOC_SECTION_TEXT
+ && (strcmp (bfd_get_section_name (input_bfd, input_section),
+ ".text") != 0
+ || (int_rel.r_type != MIPS_R_PCREL16
+ && int_rel.r_type != MIPS_R_SWITCH
+ && int_rel.r_type != MIPS_R_RELHI
+ && int_rel.r_type != MIPS_R_RELLO)))
{
- /* For SEC_CODE sections, (flags & SEC_CODE) == 0 is false,
- so they are done on pass 0. For other sections the
- expression is true, so they are done on pass 1. */
- if (((o->flags & SEC_CODE) == 0) != ipass)
- continue;
-
- for (p = o->seclets_head;
- p != (bfd_seclet_type *) NULL;
- p = p->next)
+ bfd_vma adr;
+ struct ecoff_value_adjust *a;
+
+ /* We need to get the addend so that we know whether we need
+ to adjust the address. */
+ BFD_ASSERT (int_rel.r_type == MIPS_R_REFWORD);
+
+ adr = bfd_get_32 (input_bfd,
+ (contents
+ + adjust
+ + int_rel.r_vaddr
+ - input_section->vma));
+
+ for (a = ecoff_data (input_bfd)->debug_info.adjust;
+ a != (struct ecoff_value_adjust *) NULL;
+ a = a->next)
{
- if (ecoff_dump_seclet (abfd, p, o, data, relocateable)
- == false)
- return false;
+ if (adr >= a->start && adr < a->end)
+ addend += a->adjust;
}
}
- }
- /* We handle the external symbols differently. We use the ones
- attached to the output_bfd. The linker will have already
- determined which symbols are to be attached. Here we just
- determine how much space we will need for them. */
- sym_ptr_ptr = bfd_get_outsymbols (abfd);
- if (sym_ptr_ptr != NULL)
- {
- asymbol **sym_end;
-
- sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
- for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
+ if (info->relocateable)
{
- if (((*sym_ptr_ptr)->flags & BSF_DEBUGGING) == 0
- && ((*sym_ptr_ptr)->flags & BSF_LOCAL) == 0)
+ /* We are generating relocateable output, and must convert
+ the existing reloc. */
+ if (int_rel.r_extern)
+ {
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && ! bfd_is_abs_section (h->root.u.def.section))
+ {
+ const char *name;
+
+ /* This symbol is defined in the output. Convert
+ the reloc from being against the symbol to being
+ against the section. */
+
+ /* Clear the r_extern bit. */
+ int_rel.r_extern = 0;
+
+ /* Compute a new r_symndx value. */
+ s = h->root.u.def.section;
+ name = bfd_get_section_name (output_bfd,
+ s->output_section);
+
+ int_rel.r_symndx = -1;
+ switch (name[1])
+ {
+ case 'b':
+ if (strcmp (name, ".bss") == 0)
+ int_rel.r_symndx = RELOC_SECTION_BSS;
+ break;
+ case 'd':
+ if (strcmp (name, ".data") == 0)
+ int_rel.r_symndx = RELOC_SECTION_DATA;
+ break;
+ case 'f':
+ if (strcmp (name, ".fini") == 0)
+ int_rel.r_symndx = RELOC_SECTION_FINI;
+ break;
+ case 'i':
+ if (strcmp (name, ".init") == 0)
+ int_rel.r_symndx = RELOC_SECTION_INIT;
+ break;
+ case 'l':
+ if (strcmp (name, ".lit8") == 0)
+ int_rel.r_symndx = RELOC_SECTION_LIT8;
+ else if (strcmp (name, ".lit4") == 0)
+ int_rel.r_symndx = RELOC_SECTION_LIT4;
+ break;
+ case 'r':
+ if (strcmp (name, ".rdata") == 0)
+ int_rel.r_symndx = RELOC_SECTION_RDATA;
+ break;
+ case 's':
+ if (strcmp (name, ".sdata") == 0)
+ int_rel.r_symndx = RELOC_SECTION_SDATA;
+ else if (strcmp (name, ".sbss") == 0)
+ int_rel.r_symndx = RELOC_SECTION_SBSS;
+ break;
+ case 't':
+ if (strcmp (name, ".text") == 0)
+ int_rel.r_symndx = RELOC_SECTION_TEXT;
+ break;
+ }
+
+ if (int_rel.r_symndx == -1)
+ abort ();
+
+ /* Add the section VMA and the symbol value. */
+ relocation = (h->root.u.def.value
+ + s->output_section->vma
+ + s->output_offset);
+
+ /* For a PC relative relocation, the object file
+ currently holds just the addend. We must adjust
+ by the address to get the right value. */
+ if (howto->pc_relative)
+ {
+ relocation -= int_rel.r_vaddr - input_section->vma;
+
+ /* If we are converting a RELHI or RELLO reloc
+ from being against an external symbol to
+ being against a section, we must put a
+ special value into the r_offset field. This
+ value is the old addend. The r_offset for
+ both the RELHI and RELLO relocs are the same,
+ and we set both when we see RELHI. */
+ if (int_rel.r_type == MIPS_R_RELHI)
+ {
+ long addhi, addlo;
+
+ addhi = bfd_get_32 (input_bfd,
+ (contents
+ + adjust
+ + int_rel.r_vaddr
+ - input_section->vma));
+ addhi &= 0xffff;
+ if (addhi & 0x8000)
+ addhi -= 0x10000;
+ addhi <<= 16;
+
+ if (! use_lo)
+ addlo = 0;
+ else
+ {
+ addlo = bfd_get_32 (input_bfd,
+ (contents
+ + adjust
+ + lo_int_rel.r_vaddr
+ - input_section->vma));
+ addlo &= 0xffff;
+ if (addlo & 0x8000)
+ addlo -= 0x10000;
+
+ lo_int_rel.r_offset = addhi + addlo;
+ }
+
+ int_rel.r_offset = addhi + addlo;
+ }
+ }
+
+ h = NULL;
+ }
+ else
+ {
+ /* Change the symndx value to the right one for the
+ output BFD. */
+ int_rel.r_symndx = h->indx;
+ if (int_rel.r_symndx == -1)
+ {
+ /* This symbol is not being written out. */
+ if (! ((*info->callbacks->unattached_reloc)
+ (info, h->root.root.string, input_bfd,
+ input_section,
+ int_rel.r_vaddr - input_section->vma)))
+ return false;
+ int_rel.r_symndx = 0;
+ }
+ relocation = 0;
+ }
+ }
+ else
{
- ++symhdr->iextMax;
- symhdr->issExtMax += strlen ((*sym_ptr_ptr)->name) + 1;
+ /* This is a relocation against a section. Adjust the
+ value by the amount the section moved. */
+ relocation = (s->output_section->vma
+ + s->output_offset
+ - s->vma);
}
- }
- }
- /* Adjust the counts so that structures are longword aligned. */
- symhdr->cbLine = (symhdr->cbLine + 3) &~ 3;
- symhdr->issMax = (symhdr->issMax + 3) &~ 3;
- symhdr->issExtMax = (symhdr->issExtMax + 3) &~ 3;
-
- /* Now the counts in symhdr are the correct size for the debugging
- information. We allocate the right amount of space, and reset
- the counts so that the second pass can use them as indices. It
- would be possible to output the debugging information directly to
- the file in pass 2, rather than to build it in memory and then
- write it out. Outputting to the file would require a lot of
- seeks and small writes, though, and I think this approach is
- faster. */
- size = (symhdr->cbLine * sizeof (unsigned char)
- + symhdr->idnMax * sizeof (struct dnr_ext)
- + symhdr->ipdMax * sizeof (struct pdr_ext)
- + symhdr->isymMax * sizeof (struct sym_ext)
- + symhdr->ioptMax * sizeof (struct opt_ext)
- + symhdr->iauxMax * sizeof (union aux_ext)
- + symhdr->issMax * sizeof (char)
- + symhdr->issExtMax * sizeof (char)
- + symhdr->ifdMax * sizeof (struct fdr_ext)
- + symhdr->crfd * sizeof (struct rfd_ext)
- + symhdr->iextMax * sizeof (struct ext_ext));
- raw = (char *) bfd_alloc (abfd, size);
- if (raw == (char *) NULL)
- {
- bfd_error = no_memory;
- return false;
- }
- ecoff_data (abfd)->raw_size = size;
- ecoff_data (abfd)->raw_syments = (PTR) raw;
-
- /* Initialize the raw pointers. */
-#define SET(field, count, type) \
- ecoff_data (abfd)->field = (type *) raw; \
- raw += symhdr->count * sizeof (type)
-
- SET (line, cbLine, unsigned char);
- SET (external_dnr, idnMax, struct dnr_ext);
- SET (external_pdr, ipdMax, struct pdr_ext);
- SET (external_sym, isymMax, struct sym_ext);
- SET (external_opt, ioptMax, struct opt_ext);
- SET (external_aux, iauxMax, union aux_ext);
- SET (ss, issMax, char);
- SET (ssext, issExtMax, char);
- SET (external_fdr, ifdMax, struct fdr_ext);
- SET (external_rfd, crfd, struct rfd_ext);
- SET (external_ext, iextMax, struct ext_ext);
-#undef SET
-
- /* Reset the counts so the second pass can use them to know how far
- it has gotten. */
- symhdr->ilineMax = 0;
- symhdr->cbLine = 0;
- symhdr->idnMax = 0;
- symhdr->ipdMax = 0;
- symhdr->isymMax = 0;
- symhdr->ioptMax = 0;
- symhdr->iauxMax = 0;
- symhdr->issMax = 0;
- symhdr->issExtMax = 0;
- symhdr->ifdMax = 0;
- symhdr->crfd = 0;
- symhdr->iextMax = 0;
-
- /* Do the second pass: accumulate the debugging information. */
- ecoff_clear_output_flags (abfd);
- for (ipass = 0; ipass < 2; ipass++)
- {
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- {
- if (((o->flags & SEC_CODE) == 0) != ipass)
- continue;
- for (p = o->seclets_head;
- p != (bfd_seclet_type *) NULL;
- p = p->next)
+ relocation += addend;
+ addend = 0;
+
+ /* Adjust a PC relative relocation by removing the reference
+ to the original address in the section and including the
+ reference to the new address. However, external RELHI
+ and RELLO relocs are PC relative, but don't include any
+ reference to the address. The addend is merely an
+ addend. */
+ if (howto->pc_relative
+ && (! int_rel.r_extern
+ || (int_rel.r_type != MIPS_R_RELHI
+ && int_rel.r_type != MIPS_R_RELLO)))
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ - input_section->vma);
+
+ /* Adjust the contents. */
+ if (relocation == 0)
+ r = bfd_reloc_ok;
+ else
{
- if (p->type == bfd_indirect_seclet)
+ if (int_rel.r_type != MIPS_R_REFHI
+ && int_rel.r_type != MIPS_R_RELHI)
+ r = _bfd_relocate_contents (howto, input_bfd, relocation,
+ (contents
+ + adjust
+ + int_rel.r_vaddr
+ - input_section->vma));
+ else
{
- if (ecoff_get_debug (abfd, p, o, relocateable) == false)
- return false;
+ mips_relocate_hi (&int_rel,
+ use_lo ? &lo_int_rel : NULL,
+ input_bfd, input_section, contents,
+ adjust, relocation,
+ int_rel.r_type == MIPS_R_RELHI);
+ r = bfd_reloc_ok;
}
}
- }
- }
-
- /* Put in the external symbols. */
- sym_ptr_ptr = bfd_get_outsymbols (abfd);
- if (sym_ptr_ptr != NULL)
- {
- char *ssext;
- struct ext_ext *external_ext;
-
- ssext = ecoff_data (abfd)->ssext;
- external_ext = ecoff_data (abfd)->external_ext;
- for (; *sym_ptr_ptr != NULL; sym_ptr_ptr++)
- {
- asymbol *sym_ptr;
- EXTR esym;
-
- sym_ptr = *sym_ptr_ptr;
- if ((sym_ptr->flags & BSF_DEBUGGING) != 0
- || (sym_ptr->flags & BSF_LOCAL) != 0)
- continue;
+ /* Adjust the reloc address. */
+ int_rel.r_vaddr += (input_section->output_section->vma
+ + input_section->output_offset
+ - input_section->vma);
- /* The enative pointer can be NULL for a symbol created by
- the linker via ecoff_make_empty_symbol. */
- if (bfd_asymbol_flavour (sym_ptr) != bfd_target_ecoff_flavour
- || (((ecoff_symbol_type *) sym_ptr)->native.enative
- == (struct ext_ext *) NULL))
+ /* Save the changed reloc information. */
+ mips_ecoff_swap_reloc_out (input_bfd, &int_rel, (PTR) ext_rel);
+ }
+ else
+ {
+ /* We are producing a final executable. */
+ if (int_rel.r_extern)
{
- esym.jmptbl = 0;
- esym.cobol_main = 0;
- esym.weakext = 0;
- esym.reserved = 0;
- esym.ifd = ifdNil;
- /* FIXME: we can do better than this for st and sc. */
- esym.asym.st = stGlobal;
- esym.asym.sc = scAbs;
- esym.asym.reserved = 0;
- esym.asym.index = indexNil;
+ /* This is a reloc against a symbol. */
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ asection *hsec;
+
+ hsec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + hsec->output_section->vma
+ + hsec->output_offset);
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section,
+ int_rel.r_vaddr - input_section->vma)))
+ return false;
+ relocation = 0;
+ }
}
else
{
- ecoff_symbol_type *ecoff_sym_ptr;
-
- ecoff_sym_ptr = (ecoff_symbol_type *) sym_ptr;
- if (ecoff_sym_ptr->local)
- abort ();
- ecoff_swap_ext_in (abfd, ecoff_sym_ptr->native.enative, &esym);
-
- /* If we're producing an executable, move common symbols
- into bss. */
- if (relocateable == false)
+ /* This is a reloc against a section. */
+ relocation = (s->output_section->vma
+ + s->output_offset
+ - s->vma);
+
+ /* A PC relative reloc is already correct in the object
+ file. Make it look like a pcrel_offset relocation by
+ adding in the start address. */
+ if (howto->pc_relative)
{
- if (esym.asym.sc == scCommon)
- esym.asym.sc = scBss;
- else if (esym.asym.sc == scSCommon)
- esym.asym.sc = scSBss;
+ if (int_rel.r_type != MIPS_R_RELHI || ! use_lo)
+ relocation += int_rel.r_vaddr + adjust;
+ else
+ relocation += lo_int_rel.r_vaddr + adjust;
}
-
- /* Adjust the FDR index for the symbol by that used for
- the input BFD. */
- esym.ifd += ecoff_data (bfd_asymbol_bfd (sym_ptr))->ifdbase;
}
- esym.asym.iss = symhdr->issExtMax;
-
- if (bfd_is_com_section (sym_ptr->section)
- || sym_ptr->section == &bfd_und_section)
- esym.asym.value = sym_ptr->value;
+ if (int_rel.r_type != MIPS_R_REFHI
+ && int_rel.r_type != MIPS_R_RELHI)
+ r = _bfd_final_link_relocate (howto,
+ input_bfd,
+ input_section,
+ contents,
+ (int_rel.r_vaddr
+ - input_section->vma
+ + adjust),
+ relocation,
+ addend);
else
- esym.asym.value = (sym_ptr->value
- + sym_ptr->section->output_offset
- + sym_ptr->section->output_section->vma);
-
- ecoff_swap_ext_out (abfd, &esym, external_ext + symhdr->iextMax);
-
- ecoff_set_sym_index (sym_ptr, symhdr->iextMax);
+ {
+ mips_relocate_hi (&int_rel,
+ use_lo ? &lo_int_rel : NULL,
+ input_bfd, input_section, contents, adjust,
+ relocation,
+ int_rel.r_type == MIPS_R_RELHI);
+ r = bfd_reloc_ok;
+ }
+ }
- ++symhdr->iextMax;
+ /* MIPS_R_JMPADDR requires peculiar overflow detection. The
+ instruction provides a 28 bit address (the two lower bits are
+ implicit zeroes) which is combined with the upper four bits
+ of the instruction address. */
+ if (r == bfd_reloc_ok
+ && int_rel.r_type == MIPS_R_JMPADDR
+ && (((relocation
+ + addend
+ + (int_rel.r_extern ? 0 : s->vma))
+ & 0xf0000000)
+ != ((input_section->output_section->vma
+ + input_section->output_offset
+ + (int_rel.r_vaddr - input_section->vma)
+ + adjust)
+ & 0xf0000000)))
+ r = bfd_reloc_overflow;
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ {
+ const char *name;
- strcpy (ssext + symhdr->issExtMax, sym_ptr->name);
- symhdr->issExtMax += strlen (sym_ptr->name) + 1;
+ if (int_rel.r_extern)
+ name = h->root.root.string;
+ else
+ name = bfd_section_name (input_bfd, s);
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section,
+ int_rel.r_vaddr - input_section->vma)))
+ return false;
+ }
+ break;
+ }
}
}
- /* Adjust the counts so that structures are longword aligned. */
- symhdr->cbLine = (symhdr->cbLine + 3) &~ 3;
- symhdr->issMax = (symhdr->issMax + 3) &~ 3;
- symhdr->issExtMax = (symhdr->issExtMax + 3) &~ 3;
-
return true;
}
\f
-/* Set the architecture. The only architecture we support here is
- mips. We set the architecture anyhow, since many callers ignore
- the return value. */
+/* Read in the relocs for a section. */
static boolean
-ecoff_set_arch_mach (abfd, arch, machine)
- bfd *abfd;
- enum bfd_architecture arch;
- unsigned long machine;
-{
- bfd_default_set_arch_mach (abfd, arch, machine);
- return arch == bfd_arch_mips;
-}
-
-/* Get the size of the section headers. We do not output the .scommon
- section which we created in ecoff_mkobject. */
-
-static int
-ecoff_sizeof_headers (abfd, reloc)
- bfd *abfd;
- boolean reloc;
-{
- return FILHSZ + AOUTSZ + (abfd->section_count - 1) * SCNHSZ;
-}
-
-/* Calculate the file position for each section, and set
- reloc_filepos. */
-
-static void
-ecoff_compute_section_file_positions (abfd)
+mips_read_relocs (abfd, sec)
bfd *abfd;
+ asection *sec;
{
- asection *current;
- file_ptr sofar;
- file_ptr old_sofar;
- boolean first_data;
+ struct ecoff_section_tdata *section_tdata;
- if (bfd_get_start_address (abfd))
- abfd->flags |= EXEC_P;
-
- sofar = ecoff_sizeof_headers (abfd, false);
-
- first_data = true;
- for (current = abfd->sections;
- current != (asection *) NULL;
- current = current->next)
+ section_tdata = ecoff_section_data (abfd, sec);
+ if (section_tdata == (struct ecoff_section_tdata *) NULL)
{
- /* Only deal with sections which have contents */
- if (! (current->flags & SEC_HAS_CONTENTS)
- || strcmp (current->name, SCOMMON) == 0)
- continue;
+ sec->used_by_bfd =
+ (PTR) bfd_alloc (abfd, sizeof (struct ecoff_section_tdata));
+ if (sec->used_by_bfd == NULL)
+ return false;
- /* On Ultrix, the data sections in an executable file must be
- aligned to a page boundary within the file. This does not
- affect the section size, though. FIXME: Does this work for
- other platforms? */
- if ((abfd->flags & EXEC_P) != 0
- && first_data != false
- && (current->flags & SEC_CODE) == 0)
- {
- sofar = (sofar + ROUND_SIZE - 1) &~ (ROUND_SIZE - 1);
- first_data = false;
- }
+ section_tdata = ecoff_section_data (abfd, sec);
+ section_tdata->external_relocs = NULL;
+ section_tdata->contents = NULL;
+ section_tdata->offsets = NULL;
+ }
- /* Align the sections in the file to the same boundary on
- which they are aligned in virtual memory. */
- old_sofar = sofar;
- sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
+ if (section_tdata->external_relocs == NULL)
+ {
+ bfd_size_type external_relocs_size;
- current->filepos = sofar;
+ external_relocs_size = (ecoff_backend (abfd)->external_reloc_size
+ * sec->reloc_count);
- sofar += current->_raw_size;
+ section_tdata->external_relocs =
+ (PTR) bfd_alloc (abfd, external_relocs_size);
+ if (section_tdata->external_relocs == NULL && external_relocs_size != 0)
+ return false;
- /* make sure that this section is of the right size too */
- old_sofar = sofar;
- sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
- current->_raw_size += sofar - old_sofar;
+ if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
+ || (bfd_read (section_tdata->external_relocs, 1,
+ external_relocs_size, abfd)
+ != external_relocs_size))
+ return false;
}
- ecoff_data (abfd)->reloc_filepos = sofar;
+ return true;
}
-/* Set the contents of a section. */
+/* Relax a section when linking a MIPS ECOFF file. This is used for
+ embedded PIC code, which always uses PC relative branches which
+ only have an 18 bit range on MIPS. If a branch is not in range, we
+ generate a long instruction sequence to compensate. Each time we
+ find a branch to expand, we have to check all the others again to
+ make sure they are still in range. This is slow, but it only has
+ to be done when -relax is passed to the linker.
+
+ This routine figures out which branches need to expand; the actual
+ expansion is done in mips_relocate_section when the section
+ contents are relocated. The information is stored in the offsets
+ field of the ecoff_section_tdata structure. An offset of 1 means
+ that the branch must be expanded into a multi-instruction PC
+ relative branch (such an offset will only occur for a PC relative
+ branch to an external symbol). Any other offset must be a multiple
+ of four, and is the amount to change the branch by (such an offset
+ will only occur for a PC relative branch within the same section).
+
+ We do not modify the section relocs or contents themselves so that
+ if memory usage becomes an issue we can discard them and read them
+ again. The only information we must save in memory between this
+ routine and the mips_relocate_section routine is the table of
+ offsets. */
static boolean
-ecoff_set_section_contents (abfd, section, location, offset, count)
+mips_relax_section (abfd, sec, info, again)
bfd *abfd;
- asection *section;
- PTR location;
- file_ptr offset;
- bfd_size_type count;
+ asection *sec;
+ struct bfd_link_info *info;
+ boolean *again;
{
- if (abfd->output_has_begun == false)
- ecoff_compute_section_file_positions (abfd);
+ struct ecoff_section_tdata *section_tdata;
+ bfd_byte *contents = NULL;
+ long *offsets;
+ struct external_reloc *ext_rel;
+ struct external_reloc *ext_rel_end;
+ unsigned int i;
- bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
+ /* Assume we are not going to need another pass. */
+ *again = false;
- if (count != 0)
- return (bfd_write (location, 1, count, abfd) == count) ? true : false;
+ /* If we are not generating an ECOFF file, this is much too
+ confusing to deal with. */
+ if (info->hash->creator->flavour != bfd_get_flavour (abfd))
+ return true;
- return true;
-}
+ /* If there are no relocs, there is nothing to do. */
+ if (sec->reloc_count == 0)
+ return true;
-/* Write out an ECOFF file. */
+ /* We are only interested in PC relative relocs, and why would there
+ ever be one from anything but the .text section? */
+ if (strcmp (bfd_get_section_name (abfd, sec), ".text") != 0)
+ return true;
-static boolean
-ecoff_write_object_contents (abfd)
- bfd *abfd;
-{
- asection *current;
- unsigned int count;
- file_ptr scn_base;
- file_ptr reloc_base;
- file_ptr sym_base;
- unsigned long reloc_size;
- unsigned long text_size;
- unsigned long text_start;
- unsigned long data_size;
- unsigned long data_start;
- unsigned long bss_size;
- struct internal_filehdr internal_f;
- struct internal_aouthdr internal_a;
- int i;
-
- bfd_error = system_call_error;
-
- if(abfd->output_has_begun == false)
- ecoff_compute_section_file_positions(abfd);
-
- if (abfd->sections != (asection *) NULL)
- scn_base = abfd->sections->filepos;
- else
- scn_base = 0;
- reloc_base = ecoff_data (abfd)->reloc_filepos;
-
- count = 1;
- reloc_size = 0;
- for (current = abfd->sections;
- current != (asection *)NULL;
- current = current->next)
+ /* Read in the relocs, if we haven't already got them. */
+ section_tdata = ecoff_section_data (abfd, sec);
+ if (section_tdata == (struct ecoff_section_tdata *) NULL
+ || section_tdata->external_relocs == NULL)
{
- if (strcmp (current->name, SCOMMON) == 0)
- continue;
- current->target_index = count;
- ++count;
- if (current->reloc_count != 0)
- {
- bfd_size_type relsize;
-
- current->rel_filepos = reloc_base;
- relsize = current->reloc_count * RELSZ;
- reloc_size += relsize;
- reloc_base += relsize;
- }
- else
- current->rel_filepos = 0;
+ if (! mips_read_relocs (abfd, sec))
+ goto error_return;
+ section_tdata = ecoff_section_data (abfd, sec);
}
- sym_base = reloc_base + reloc_size;
-
- /* At least on Ultrix, the symbol table of an executable file must
- be aligned to a page boundary. FIXME: Is this true on other
- platforms? */
- if ((abfd->flags & EXEC_P) != 0)
- sym_base = (sym_base + ROUND_SIZE - 1) &~ (ROUND_SIZE - 1);
-
- ecoff_data (abfd)->sym_filepos = sym_base;
-
- text_size = ecoff_sizeof_headers (abfd, false);
- text_start = 0;
- data_size = 0;
- data_start = 0;
- bss_size = 0;
+ if (sec->_cooked_size == 0)
+ {
+ /* We must initialize _cooked_size only the first time we are
+ called. */
+ sec->_cooked_size = sec->_raw_size;
+ }
- /* Write section headers to the file. */
+ contents = section_tdata->contents;
+ offsets = section_tdata->offsets;
- internal_f.f_nscns = 0;
- if (bfd_seek (abfd, (file_ptr) (FILHSZ + AOUTSZ), SEEK_SET) != 0)
- return false;
- for (current = abfd->sections;
- current != (asection *) NULL;
- current = current->next)
+ /* Look for any external PC relative relocs. Internal PC relative
+ relocs are already correct in the object file, so they certainly
+ can not overflow. */
+ ext_rel = (struct external_reloc *) section_tdata->external_relocs;
+ ext_rel_end = ext_rel + sec->reloc_count;
+ for (i = 0; ext_rel < ext_rel_end; ext_rel++, i++)
{
- struct internal_scnhdr section;
- bfd_vma vma;
+ struct internal_reloc int_rel;
+ struct ecoff_link_hash_entry *h;
+ asection *hsec;
+ bfd_signed_vma relocation;
+ struct external_reloc *adj_ext_rel;
+ unsigned int adj_i;
+ unsigned long ext_count;
+ struct ecoff_link_hash_entry **adj_h_ptr;
+ struct ecoff_link_hash_entry **adj_h_ptr_end;
+ struct ecoff_value_adjust *adjust;
- if (strcmp (current->name, SCOMMON) == 0)
+ /* If we have already expanded this reloc, we certainly don't
+ need to do it again. */
+ if (offsets != (long *) NULL && offsets[i] == 1)
+ continue;
+
+ /* Quickly check that this reloc is external PCREL16. */
+ if (bfd_header_big_endian (abfd))
{
- BFD_ASSERT (bfd_get_section_size_before_reloc (current) == 0
- && current->reloc_count == 0);
- continue;
+ if ((ext_rel->r_bits[3] & RELOC_BITS3_EXTERN_BIG) == 0
+ || (((ext_rel->r_bits[3] & RELOC_BITS3_TYPE_BIG)
+ >> RELOC_BITS3_TYPE_SH_BIG)
+ != MIPS_R_PCREL16))
+ continue;
}
-
- ++internal_f.f_nscns;
-
- strncpy (section.s_name, current->name, sizeof section.s_name);
-
- /* FIXME: is this correct for shared libraries? I think it is
- but I have no platform to check. Ian Lance Taylor. */
- vma = bfd_get_section_vma (abfd, current);
- if (strcmp (current->name, _LIB) == 0)
- section.s_vaddr = 0;
else
- section.s_vaddr = vma;
+ {
+ if ((ext_rel->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) == 0
+ || (((ext_rel->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
+ >> RELOC_BITS3_TYPE_SH_LITTLE)
+ != MIPS_R_PCREL16))
+ continue;
+ }
- section.s_paddr = vma;
- section.s_size = bfd_get_section_size_before_reloc (current);
+ mips_ecoff_swap_reloc_in (abfd, (PTR) ext_rel, &int_rel);
- /* If this section has no size or is unloadable then the scnptr
- will be 0 too. */
- if (current->_raw_size == 0
- || (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
- section.s_scnptr = 0;
- else
- section.s_scnptr = current->filepos;
- section.s_relptr = current->rel_filepos;
-
- /* FIXME: the lnnoptr of the .sbss or .sdata section of an
- object file produced by the assembler is supposed to point to
- information about how much room is required by objects of
- various different sizes. I think this only matters if we
- want the linker to compute the best size to use, or
- something. I don't know what happens if the information is
- not present. */
- section.s_lnnoptr = 0;
-
- section.s_nreloc = current->reloc_count;
- section.s_nlnno = 0;
- section.s_flags = ecoff_sec_to_styp_flags (current->name,
- current->flags);
-
- {
- SCNHDR buff;
-
- ecoff_swap_scnhdr_out (abfd, (PTR) §ion, (PTR) &buff);
- if (bfd_write ((PTR) &buff, 1, SCNHSZ, abfd) != SCNHSZ)
- return false;
- }
+ h = ecoff_data (abfd)->sym_hashes[int_rel.r_symndx];
+ if (h == (struct ecoff_link_hash_entry *) NULL)
+ abort ();
- if ((section.s_flags & STYP_TEXT) != 0)
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
{
- text_size += bfd_get_section_size_before_reloc (current);
- if (text_start == 0 || text_start > vma)
- text_start = vma;
+ /* Just ignore undefined symbols. These will presumably
+ generate an error later in the link. */
+ continue;
}
- else if ((section.s_flags & STYP_RDATA) != 0
- || (section.s_flags & STYP_DATA) != 0
- || (section.s_flags & STYP_LIT8) != 0
- || (section.s_flags & STYP_LIT4) != 0
- || (section.s_flags & STYP_SDATA) != 0)
+
+ /* Get the value of the symbol. */
+ hsec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + hsec->output_section->vma
+ + hsec->output_offset);
+
+ /* Subtract out the current address. */
+ relocation -= (sec->output_section->vma
+ + sec->output_offset
+ + (int_rel.r_vaddr - sec->vma));
+
+ /* The addend is stored in the object file. In the normal case
+ of ``bal symbol'', the addend will be -4. It will only be
+ different in the case of ``bal symbol+constant''. To avoid
+ always reading in the section contents, we don't check the
+ addend in the object file (we could easily check the contents
+ if we happen to have already read them in, but I fear that
+ this could be confusing). This means we will screw up if
+ there is a branch to a symbol that is in range, but added to
+ a constant which puts it out of range; in such a case the
+ link will fail with a reloc overflow error. Since the
+ compiler will never generate such code, it should be easy
+ enough to work around it by changing the assembly code in the
+ source file. */
+ relocation -= 4;
+
+ /* Now RELOCATION is the number we want to put in the object
+ file. See whether it fits. */
+ if (relocation >= -0x20000 && relocation < 0x20000)
+ continue;
+
+ /* Now that we know this reloc needs work, which will rarely
+ happen, go ahead and grab the section contents. */
+ if (contents == (bfd_byte *) NULL)
{
- data_size += bfd_get_section_size_before_reloc (current);
- if (data_start == 0 || data_start > vma)
- data_start = vma;
+ if (info->keep_memory)
+ contents = (bfd_byte *) bfd_alloc (abfd, sec->_raw_size);
+ else
+ contents = (bfd_byte *) bfd_malloc ((size_t) sec->_raw_size);
+ if (contents == (bfd_byte *) NULL)
+ goto error_return;
+ if (! bfd_get_section_contents (abfd, sec, (PTR) contents,
+ (file_ptr) 0, sec->_raw_size))
+ goto error_return;
+ if (info->keep_memory)
+ section_tdata->contents = contents;
}
- else if ((section.s_flags & STYP_BSS) != 0
- || (section.s_flags & STYP_SBSS) != 0)
- bss_size += bfd_get_section_size_before_reloc (current);
- }
- /* Set up the file header. */
-
- if (abfd->xvec->header_byteorder_big_p != false)
- internal_f.f_magic = MIPS_MAGIC_BIG;
- else
- internal_f.f_magic = MIPS_MAGIC_LITTLE;
+ /* We only support changing the bal instruction. It would be
+ possible to handle other PC relative branches, but some of
+ them (the conditional branches) would require a different
+ length instruction sequence which would complicate both this
+ routine and mips_relax_pcrel16. It could be written if
+ somebody felt it were important. Ignoring this reloc will
+ presumably cause a reloc overflow error later on. */
+ if (bfd_get_32 (abfd, contents + int_rel.r_vaddr - sec->vma)
+ != 0x0411ffff) /* bgezal $0,. == bal . */
+ continue;
- /*
- We will NOT put a fucking timestamp in the header here. Every time you
- put it back, I will come in and take it out again. I'm sorry. This
- field does not belong here. We fill it with a 0 so it compares the
- same but is not a reasonable time. -- gnu@cygnus.com
- */
- internal_f.f_timdat = 0;
+ /* Bother. We need to expand this reloc, and we will need to
+ make another relaxation pass since this change may put other
+ relocs out of range. We need to examine the local branches
+ and we need to allocate memory to hold the offsets we must
+ add to them. We also need to adjust the values of all
+ symbols in the object file following this location. */
- if (bfd_get_symcount (abfd) != 0)
- {
- /* The ECOFF f_nsyms field is not actually the number of
- symbols, it's the size of symbolic information header. */
- internal_f.f_nsyms = sizeof (struct hdr_ext);
- internal_f.f_symptr = sym_base;
- }
- else
- {
- internal_f.f_nsyms = 0;
- internal_f.f_symptr = 0;
- }
+ sec->_cooked_size += PCREL16_EXPANSION_ADJUSTMENT;
+ *again = true;
- internal_f.f_opthdr = AOUTSZ;
+ if (offsets == (long *) NULL)
+ {
+ size_t size;
+
+ size = sec->reloc_count * sizeof (long);
+ offsets = (long *) bfd_alloc (abfd, size);
+ if (offsets == (long *) NULL)
+ goto error_return;
+ memset (offsets, 0, size);
+ section_tdata->offsets = offsets;
+ }
- internal_f.f_flags = F_LNNO;
- if (reloc_size == 0)
- internal_f.f_flags |= F_RELFLG;
- if (bfd_get_symcount (abfd) == 0)
- internal_f.f_flags |= F_LSYMS;
- if (abfd->flags & EXEC_P)
- internal_f.f_flags |= F_EXEC;
+ offsets[i] = 1;
- if (! abfd->xvec->byteorder_big_p)
- internal_f.f_flags |= F_AR32WR;
- else
- internal_f.f_flags |= F_AR32W;
-
- /* Set up the ``optional'' header. */
- internal_a.magic = ZMAGIC;
-
- /* FIXME: This is what Ultrix puts in, and it makes the Ultrix
- linker happy. But, is it right? */
- internal_a.vstamp = 0x20a;
-
- /* At least on Ultrix, these have to be rounded to page boundaries.
- FIXME: Is this true on other platforms? */
- internal_a.tsize = (text_size + ROUND_SIZE - 1) &~ (ROUND_SIZE - 1);
- internal_a.text_start = text_start &~ (ROUND_SIZE - 1);
- internal_a.dsize = (data_size + ROUND_SIZE - 1) &~ (ROUND_SIZE - 1);
- internal_a.data_start = data_start &~ (ROUND_SIZE - 1);
-
- /* On Ultrix, the initial portions of the .sbss and .bss segments
- are at the end of the data section. The bsize field in the
- optional header records how many bss bytes are required beyond
- those in the data section. The value is not rounded to a page
- boundary. */
- if (bss_size < internal_a.dsize - data_size)
- bss_size = 0;
- else
- bss_size -= internal_a.dsize - data_size;
- internal_a.bsize = bss_size;
- internal_a.bss_start = internal_a.data_start + internal_a.dsize;
+ /* Now look for all PC relative references that cross this reloc
+ and adjust their offsets. */
+ adj_ext_rel = (struct external_reloc *) section_tdata->external_relocs;
+ for (adj_i = 0; adj_ext_rel < ext_rel_end; adj_ext_rel++, adj_i++)
+ {
+ struct internal_reloc adj_int_rel;
+ bfd_vma start, stop;
+ int change;
- internal_a.entry = bfd_get_start_address (abfd);
+ mips_ecoff_swap_reloc_in (abfd, (PTR) adj_ext_rel, &adj_int_rel);
- internal_a.gp_value = ecoff_data (abfd)->gp;
+ if (adj_int_rel.r_type == MIPS_R_PCREL16)
+ {
+ unsigned long insn;
- internal_a.gprmask = ecoff_data (abfd)->gprmask;
- for (i = 0; i < 4; i++)
- internal_a.cprmask[i] = ecoff_data (abfd)->cprmask[i];
+ /* We only care about local references. External ones
+ will be relocated correctly anyhow. */
+ if (adj_int_rel.r_extern)
+ continue;
- /* Write out the file header and the optional header. */
+ /* We are only interested in a PC relative reloc within
+ this section. FIXME: Cross section PC relative
+ relocs may not be handled correctly; does anybody
+ care? */
+ if (adj_int_rel.r_symndx != RELOC_SECTION_TEXT)
+ continue;
- if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
- return false;
+ start = adj_int_rel.r_vaddr;
- {
- FILHDR buff;
- ecoff_swap_filehdr_out (abfd, (PTR) &internal_f, (PTR) &buff);
- if (bfd_write ((PTR) &buff, 1, FILHSZ, abfd) != FILHSZ)
- return false;
- }
+ insn = bfd_get_32 (abfd,
+ contents + adj_int_rel.r_vaddr - sec->vma);
- {
- AOUTHDR buff;
+ stop = (insn & 0xffff) << 2;
+ if ((stop & 0x20000) != 0)
+ stop -= 0x40000;
+ stop += adj_int_rel.r_vaddr + 4;
+ }
+ else if (adj_int_rel.r_type == MIPS_R_RELHI)
+ {
+ struct internal_reloc rello;
+ long addhi, addlo;
+
+ /* The next reloc must be MIPS_R_RELLO, and we handle
+ them together. */
+ BFD_ASSERT (adj_ext_rel + 1 < ext_rel_end);
+
+ mips_ecoff_swap_reloc_in (abfd, (PTR) (adj_ext_rel + 1), &rello);
+
+ BFD_ASSERT (rello.r_type == MIPS_R_RELLO);
+
+ addhi = bfd_get_32 (abfd,
+ contents + adj_int_rel.r_vaddr - sec->vma);
+ addhi &= 0xffff;
+ if (addhi & 0x8000)
+ addhi -= 0x10000;
+ addhi <<= 16;
+
+ addlo = bfd_get_32 (abfd, contents + rello.r_vaddr - sec->vma);
+ addlo &= 0xffff;
+ if (addlo & 0x8000)
+ addlo -= 0x10000;
+
+ if (adj_int_rel.r_extern)
+ {
+ /* The value we want here is
+ sym - RELLOaddr + addend
+ which we can express as
+ sym - (RELLOaddr - addend)
+ Therefore if we are expanding the area between
+ RELLOaddr and RELLOaddr - addend we must adjust
+ the addend. This is admittedly ambiguous, since
+ we might mean (sym + addend) - RELLOaddr, but in
+ practice we don't, and there is no way to handle
+ that case correctly since at this point we have
+ no idea whether any reloc is being expanded
+ between sym and sym + addend. */
+ start = rello.r_vaddr - (addhi + addlo);
+ stop = rello.r_vaddr;
+ }
+ else
+ {
+ /* An internal RELHI/RELLO pair represents the
+ difference between two addresses, $LC0 - foo.
+ The symndx value is actually the difference
+ between the reloc address and $LC0. This lets us
+ compute $LC0, and, by considering the addend,
+ foo. If the reloc we are expanding falls between
+ those two relocs, we must adjust the addend. At
+ this point, the symndx value is actually in the
+ r_offset field, where it was put by
+ mips_ecoff_swap_reloc_in. */
+ start = rello.r_vaddr - adj_int_rel.r_offset;
+ stop = start + addhi + addlo;
+ }
+ }
+ else if (adj_int_rel.r_type == MIPS_R_SWITCH)
+ {
+ /* A MIPS_R_SWITCH reloc represents a word of the form
+ .word $L3-$LS12
+ The value in the object file is correct, assuming the
+ original value of $L3. The symndx value is actually
+ the difference between the reloc address and $LS12.
+ This lets us compute the original value of $LS12 as
+ vaddr - symndx
+ and the original value of $L3 as
+ vaddr - symndx + addend
+ where addend is the value from the object file. At
+ this point, the symndx value is actually found in the
+ r_offset field, since it was moved by
+ mips_ecoff_swap_reloc_in. */
+ start = adj_int_rel.r_vaddr - adj_int_rel.r_offset;
+ stop = start + bfd_get_32 (abfd,
+ (contents
+ + adj_int_rel.r_vaddr
+ - sec->vma));
+ }
+ else
+ continue;
- ecoff_swap_aouthdr_out (abfd, (PTR) &internal_a, (PTR) &buff);
- if (bfd_write ((PTR) &buff, 1, AOUTSZ, abfd) != AOUTSZ)
- return false;
- }
+ /* If the range expressed by this reloc, which is the
+ distance between START and STOP crosses the reloc we are
+ expanding, we must adjust the offset. The sign of the
+ adjustment depends upon the direction in which the range
+ crosses the reloc being expanded. */
+ if (start <= int_rel.r_vaddr && stop > int_rel.r_vaddr)
+ change = PCREL16_EXPANSION_ADJUSTMENT;
+ else if (start > int_rel.r_vaddr && stop <= int_rel.r_vaddr)
+ change = - PCREL16_EXPANSION_ADJUSTMENT;
+ else
+ change = 0;
- /* Write out the relocs. */
- for (current = abfd->sections;
- current != (asection *) NULL;
- current = current->next)
- {
- RELOC *buff;
- arelent **reloc_ptr_ptr;
- arelent **reloc_end;
- RELOC *out_ptr;
+ offsets[adj_i] += change;
- if (current->reloc_count == 0)
- continue;
+ if (adj_int_rel.r_type == MIPS_R_RELHI)
+ {
+ adj_ext_rel++;
+ adj_i++;
+ offsets[adj_i] += change;
+ }
+ }
- buff = (RELOC *) bfd_alloc (abfd, current->reloc_count * RELSZ);
- if (buff == (RELOC *) NULL)
+ /* Find all symbols in this section defined by this object file
+ and adjust their values. Note that we decide whether to
+ adjust the value based on the value stored in the ECOFF EXTR
+ structure, because the value stored in the hash table may
+ have been changed by an earlier expanded reloc and thus may
+ no longer correctly indicate whether the symbol is before or
+ after the expanded reloc. */
+ ext_count = ecoff_data (abfd)->debug_info.symbolic_header.iextMax;
+ adj_h_ptr = ecoff_data (abfd)->sym_hashes;
+ adj_h_ptr_end = adj_h_ptr + ext_count;
+ for (; adj_h_ptr < adj_h_ptr_end; adj_h_ptr++)
{
- bfd_error = no_memory;
- return false;
+ struct ecoff_link_hash_entry *adj_h;
+
+ adj_h = *adj_h_ptr;
+ if (adj_h != (struct ecoff_link_hash_entry *) NULL
+ && (adj_h->root.type == bfd_link_hash_defined
+ || adj_h->root.type == bfd_link_hash_defweak)
+ && adj_h->root.u.def.section == sec
+ && adj_h->esym.asym.value > int_rel.r_vaddr)
+ adj_h->root.u.def.value += PCREL16_EXPANSION_ADJUSTMENT;
}
- reloc_ptr_ptr = current->orelocation;
- reloc_end = reloc_ptr_ptr + current->reloc_count;
- out_ptr = buff;
- for (; reloc_ptr_ptr < reloc_end; reloc_ptr_ptr++, out_ptr++)
- {
- arelent *reloc;
- asymbol *sym;
- struct internal_reloc in;
-
- memset (&in, 0, sizeof in);
-
- reloc = *reloc_ptr_ptr;
- sym = *reloc->sym_ptr_ptr;
-
- /* This must be an ECOFF reloc. */
- BFD_ASSERT (reloc->howto != (reloc_howto_type *) NULL
- && reloc->howto >= ecoff_howto_table
- && (reloc->howto
- < (ecoff_howto_table + ECOFF_HOWTO_COUNT)));
-
- in.r_vaddr = reloc->address + bfd_get_section_vma (abfd, current);
- in.r_type = reloc->howto->type;
-
- /* If this is a REFHI reloc, the next one must be a REFLO
- reloc for the same symbol. */
- BFD_ASSERT (in.r_type != ECOFF_R_REFHI
- || (reloc_ptr_ptr < reloc_end
- && (reloc_ptr_ptr[1]->howto
- != (reloc_howto_type *) NULL)
- && (reloc_ptr_ptr[1]->howto->type
- == ECOFF_R_REFLO)
- && (sym == *reloc_ptr_ptr[1]->sym_ptr_ptr)));
-
- if ((sym->flags & BSF_SECTION_SYM) == 0)
- {
- in.r_symndx = ecoff_get_sym_index (*reloc->sym_ptr_ptr);
- in.r_extern = 1;
- }
- else
- {
- CONST char *name;
-
- name = bfd_get_section_name (abfd, bfd_get_section (sym));
- if (strcmp (name, ".text") == 0)
- in.r_symndx = RELOC_SECTION_TEXT;
- else if (strcmp (name, ".rdata") == 0)
- in.r_symndx = RELOC_SECTION_RDATA;
- else if (strcmp (name, ".data") == 0)
- in.r_symndx = RELOC_SECTION_DATA;
- else if (strcmp (name, ".sdata") == 0)
- in.r_symndx = RELOC_SECTION_SDATA;
- else if (strcmp (name, ".sbss") == 0)
- in.r_symndx = RELOC_SECTION_SBSS;
- else if (strcmp (name, ".bss") == 0)
- in.r_symndx = RELOC_SECTION_BSS;
- else if (strcmp (name, ".init") == 0)
- in.r_symndx = RELOC_SECTION_INIT;
- else if (strcmp (name, ".lit8") == 0)
- in.r_symndx = RELOC_SECTION_LIT8;
- else if (strcmp (name, ".lit4") == 0)
- in.r_symndx = RELOC_SECTION_LIT4;
- else
- abort ();
- in.r_extern = 0;
- }
+ /* Add an entry to the symbol value adjust list. This is used
+ by bfd_ecoff_debug_accumulate to adjust the values of
+ internal symbols and FDR's. */
+ adjust = ((struct ecoff_value_adjust *)
+ bfd_alloc (abfd, sizeof (struct ecoff_value_adjust)));
+ if (adjust == (struct ecoff_value_adjust *) NULL)
+ goto error_return;
- ecoff_swap_reloc_out (abfd, (PTR) &in, (PTR) out_ptr);
- }
+ adjust->start = int_rel.r_vaddr;
+ adjust->end = sec->vma + sec->_raw_size;
+ adjust->adjust = PCREL16_EXPANSION_ADJUSTMENT;
- if (bfd_seek (abfd, current->rel_filepos, SEEK_SET) != 0)
- return false;
- if (bfd_write ((PTR) buff, RELSZ, current->reloc_count, abfd)
- != RELSZ * current->reloc_count)
- return false;
- bfd_release (abfd, (PTR) buff);
+ adjust->next = ecoff_data (abfd)->debug_info.adjust;
+ ecoff_data (abfd)->debug_info.adjust = adjust;
}
- /* Write out the symbolic debugging information. */
- if (bfd_get_symcount (abfd) > 0)
- {
- HDRR *symhdr;
- unsigned long sym_offset;
- struct hdr_ext buff;
-
- /* Set up the offsets in the symbolic header. */
- symhdr = &ecoff_data (abfd)->symbolic_header;
- sym_offset = ecoff_data (abfd)->sym_filepos + sizeof (struct hdr_ext);
-
-#define SET(offset, size, ptr) \
- if (symhdr->size == 0) \
- symhdr->offset = 0; \
- else \
- symhdr->offset = (((char *) ecoff_data (abfd)->ptr \
- - (char *) ecoff_data (abfd)->raw_syments) \
- + sym_offset);
-
- SET (cbLineOffset, cbLine, line);
- SET (cbDnOffset, idnMax, external_dnr);
- SET (cbPdOffset, ipdMax, external_pdr);
- SET (cbSymOffset, isymMax, external_sym);
- SET (cbOptOffset, ioptMax, external_opt);
- SET (cbAuxOffset, iauxMax, external_aux);
- SET (cbSsOffset, issMax, ss);
- SET (cbSsExtOffset, issExtMax, ssext);
- SET (cbFdOffset, ifdMax, external_fdr);
- SET (cbRfdOffset, crfd, external_rfd);
- SET (cbExtOffset, iextMax, external_ext);
-#undef SET
-
- if (bfd_seek (abfd, (file_ptr) ecoff_data (abfd)->sym_filepos,
- SEEK_SET) != 0)
- return false;
- ecoff_swap_hdr_out (abfd, &ecoff_data (abfd)->symbolic_header, &buff);
- if (bfd_write ((PTR) &buff, 1, sizeof buff, abfd) != sizeof buff)
- return false;
- if (bfd_write ((PTR) ecoff_data (abfd)->raw_syments, 1,
- ecoff_data (abfd)->raw_size, abfd)
- != ecoff_data (abfd)->raw_size)
- return false;
- }
+ if (contents != (bfd_byte *) NULL && ! info->keep_memory)
+ free (contents);
return true;
-}
-\f
-/* Archive handling. ECOFF uses what appears to be a unique type of
- archive header (which I call an armap). The byte ordering of the
- armap and the contents are encoded in the name of the armap itself.
- At least for now, we only support archives with the same byte
- ordering in the armap and the contents.
-
- The first four bytes in the armap are the number of symbol
- definitions. This is always a power of two.
-
- This is followed by the symbol definitions. Each symbol definition
- occupies 8 bytes. The first four bytes are the offset from the
- start of the armap strings to the null-terminated string naming
- this symbol. The second four bytes are the file offset to the
- archive member which defines this symbol. If the second four bytes
- are 0, then this is not actually a symbol definition, and it should
- be ignored.
-
- The symbols are hashed into the armap with a closed hashing scheme.
- See the functions below for the details of the algorithm.
-
- We could use the hash table when looking up symbols in a library.
- This would require a new BFD target entry point to replace the
- bfd_get_next_mapent function used by the linker.
-
- After the symbol definitions comes four bytes holding the size of
- the string table, followed by the string table itself. */
-
-/* The name of an archive headers looks like this:
- __________E[BL]E[BL]_ (with a trailing space).
- The trailing space is changed to an X if the archive is changed to
- indicate that the armap is out of date. */
-
-#define ARMAP_BIG_ENDIAN 'B'
-#define ARMAP_LITTLE_ENDIAN 'L'
-#define ARMAP_MARKER 'E'
-#define ARMAP_START "__________"
-#define ARMAP_HEADER_MARKER_INDEX 10
-#define ARMAP_HEADER_ENDIAN_INDEX 11
-#define ARMAP_OBJECT_MARKER_INDEX 12
-#define ARMAP_OBJECT_ENDIAN_INDEX 13
-#define ARMAP_END_INDEX 14
-#define ARMAP_END "_ "
-
-/* This is a magic number used in the hashing algorithm. */
-#define ARMAP_HASH_MAGIC 0x9dd68ab5
-
-/* This returns the hash value to use for a string. It also sets
- *REHASH to the rehash adjustment if the first slot is taken. SIZE
- is the number of entries in the hash table, and HLOG is the log
- base 2 of SIZE. */
-
-static unsigned int
-ecoff_armap_hash (s, rehash, size, hlog)
- CONST char *s;
- unsigned int *rehash;
- unsigned int size;
- unsigned int hlog;
-{
- unsigned int hash;
-
- hash = *s++;
- while (*s != '\0')
- hash = ((hash >> 27) | (hash << 5)) + *s++;
- hash *= ARMAP_HASH_MAGIC;
- *rehash = (hash & (size - 1)) | 1;
- return hash >> (32 - hlog);
+
+ error_return:
+ if (contents != (bfd_byte *) NULL && ! info->keep_memory)
+ free (contents);
+ return false;
}
-/* Read in the armap. */
+/* This routine is called from mips_relocate_section when a PC
+ relative reloc must be expanded into the five instruction sequence.
+ It handles all the details of the expansion, including resolving
+ the reloc. */
static boolean
-ecoff_slurp_armap (abfd)
- bfd *abfd;
+mips_relax_pcrel16 (info, input_bfd, input_section, h, location, address)
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ struct ecoff_link_hash_entry *h;
+ bfd_byte *location;
+ bfd_vma address;
{
- char nextname[17];
- unsigned int i;
- struct areltdata *mapdata;
- bfd_size_type parsed_size;
- char *raw_armap;
- struct artdata *ardata;
- unsigned int count;
- char *raw_ptr;
- struct symdef *symdef_ptr;
- char *stringbase;
-
- /* Get the name of the first element. */
- i = bfd_read ((PTR) nextname, 1, 16, abfd);
- if (i == 0)
- return true;
- if (i != 16)
- return false;
-
- bfd_seek (abfd, (file_ptr) -16, SEEK_CUR);
-
- /* See if the first element is an armap. */
- if (strncmp (nextname, ARMAP_START, sizeof ARMAP_START - 1) != 0
- || nextname[ARMAP_HEADER_MARKER_INDEX] != ARMAP_MARKER
- || (nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN
- && nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN)
- || nextname[ARMAP_OBJECT_MARKER_INDEX] != ARMAP_MARKER
- || (nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN
- && nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN)
- || strncmp (nextname + ARMAP_END_INDEX,
- ARMAP_END, sizeof ARMAP_END - 1) != 0)
- {
- bfd_has_map (abfd) = false;
- return true;
- }
-
- /* Make sure we have the right byte ordering. */
- if (((nextname[ARMAP_HEADER_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN)
- ^ (abfd->xvec->header_byteorder_big_p != false))
- || ((nextname[ARMAP_OBJECT_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN)
- ^ (abfd->xvec->byteorder_big_p != false)))
- {
- bfd_error = wrong_format;
- return false;
- }
-
- /* Read in the armap. */
- ardata = bfd_ardata (abfd);
- mapdata = snarf_ar_hdr (abfd);
- if (mapdata == (struct areltdata *) NULL)
- return false;
- parsed_size = mapdata->parsed_size;
- bfd_release (abfd, (PTR) mapdata);
-
- raw_armap = (char *) bfd_alloc (abfd, parsed_size);
- if (raw_armap == (char *) NULL)
- {
- bfd_error = no_memory;
- return false;
- }
-
- if (bfd_read ((PTR) raw_armap, 1, parsed_size, abfd) != parsed_size)
- {
- bfd_error = malformed_archive;
- bfd_release (abfd, (PTR) raw_armap);
- return false;
- }
-
- count = bfd_h_get_32 (abfd, (PTR) raw_armap);
-
- ardata->symdef_count = 0;
- ardata->cache = (struct ar_cache *) NULL;
+ bfd_vma relocation;
- /* Hack: overlay the symdefs on top of the raw archive data. This
- is the way do_slurp_bsd_armap works. */
- raw_ptr = raw_armap + LONG_SIZE;
- symdef_ptr = (struct symdef *) raw_ptr;
- ardata->symdefs = (carsym *) symdef_ptr;
- stringbase = raw_ptr + count * (2 * LONG_SIZE) + LONG_SIZE;
+ /* 0x0411ffff is bgezal $0,. == bal . */
+ BFD_ASSERT (bfd_get_32 (input_bfd, location) == 0x0411ffff);
+
+ /* We need to compute the distance between the symbol and the
+ current address plus eight. */
+ relocation = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ relocation -= address + 8;
+
+ /* If the lower half is negative, increment the upper 16 half. */
+ if ((relocation & 0x8000) != 0)
+ relocation += 0x10000;
+
+ bfd_put_32 (input_bfd, 0x04110001, location); /* bal .+8 */
+ bfd_put_32 (input_bfd,
+ 0x3c010000 | ((relocation >> 16) & 0xffff), /* lui $at,XX */
+ location + 4);
+ bfd_put_32 (input_bfd,
+ 0x24210000 | (relocation & 0xffff), /* addiu $at,$at,XX */
+ location + 8);
+ bfd_put_32 (input_bfd, 0x003f0821, location + 12); /* addu $at,$at,$ra */
+ bfd_put_32 (input_bfd, 0x0020f809, location + 16); /* jalr $at */
-#ifdef CHECK_ARMAP_HASH
- {
- unsigned int hlog;
-
- /* Double check that I have the hashing algorithm right by making
- sure that every symbol can be looked up successfully. */
- hlog = 0;
- for (i = 1; i < count; i <<= 1)
- hlog++;
- BFD_ASSERT (i == count);
-
- for (i = 0; i < count; i++, raw_ptr += 2 * LONG_SIZE)
- {
- unsigned int name_offset, file_offset;
- unsigned int hash, rehash, srch;
-
- name_offset = bfd_h_get_32 (abfd, (PTR) raw_ptr);
- file_offset = bfd_h_get_32 (abfd, (PTR) (raw_ptr + LONG_SIZE));
- if (file_offset == 0)
- continue;
- hash = ecoff_armap_hash (stringbase + name_offset, &rehash, count,
- hlog);
- if (hash == i)
- continue;
+ return true;
+}
- /* See if we can rehash to this location. */
- for (srch = (hash + rehash) & (count - 1);
- srch != hash && srch != i;
- srch = (srch + rehash) & (count - 1))
- BFD_ASSERT (bfd_h_get_32 (abfd,
- (PTR) (raw_armap
- + LONG_SIZE
- + (srch * 2 * LONG_SIZE)
- + LONG_SIZE))
- != 0);
- BFD_ASSERT (srch == i);
- }
- }
-
- raw_ptr = raw_armap + LONG_SIZE;
-#endif /* CHECK_ARMAP_HASH */
-
- for (i = 0; i < count; i++, raw_ptr += 2 * LONG_SIZE)
- {
- unsigned int name_offset, file_offset;
+/* Given a .sdata section and a .rel.sdata in-memory section, store
+ relocation information into the .rel.sdata section which can be
+ used at runtime to relocate the section. This is called by the
+ linker when the --embedded-relocs switch is used. This is called
+ after the add_symbols entry point has been called for all the
+ objects, and before the final_link entry point is called. This
+ function presumes that the object was compiled using
+ -membedded-pic. */
- name_offset = bfd_h_get_32 (abfd, (PTR) raw_ptr);
- file_offset = bfd_h_get_32 (abfd, (PTR) (raw_ptr + LONG_SIZE));
- if (file_offset == 0)
- continue;
- symdef_ptr->s.name = stringbase + name_offset;
- symdef_ptr->file_offset = file_offset;
- ++symdef_ptr;
- ++ardata->symdef_count;
- }
+boolean
+bfd_mips_ecoff_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *datasec;
+ asection *relsec;
+ char **errmsg;
+{
+ struct ecoff_link_hash_entry **sym_hashes;
+ struct ecoff_section_tdata *section_tdata;
+ struct external_reloc *ext_rel;
+ struct external_reloc *ext_rel_end;
+ bfd_byte *p;
- ardata->first_file_filepos = bfd_tell (abfd);
- /* Pad to an even boundary. */
- ardata->first_file_filepos += ardata->first_file_filepos % 2;
+ BFD_ASSERT (! info->relocateable);
- bfd_has_map (abfd) = true;
+ *errmsg = NULL;
- return true;
-}
+ if (datasec->reloc_count == 0)
+ return true;
-/* Write out an armap. */
+ sym_hashes = ecoff_data (abfd)->sym_hashes;
-static boolean
-ecoff_write_armap (abfd, elength, map, orl_count, stridx)
- bfd *abfd;
- unsigned int elength;
- struct orl *map;
- unsigned int orl_count;
- int stridx;
-{
- unsigned int hashsize, hashlog;
- unsigned int symdefsize;
- int padit;
- unsigned int stringsize;
- unsigned int mapsize;
- file_ptr firstreal;
- struct ar_hdr hdr;
- struct stat statbuf;
- unsigned int i;
- bfd_byte temp[LONG_SIZE];
- bfd_byte *hashtable;
- bfd *current;
- bfd *last_elt;
-
- /* Ultrix appears to use as a hash table size the least power of two
- greater than twice the number of entries. */
- for (hashlog = 0; (1 << hashlog) <= 2 * orl_count; hashlog++)
- ;
- hashsize = 1 << hashlog;
-
- symdefsize = hashsize * 2 * LONG_SIZE;
- padit = stridx % 2;
- stringsize = stridx + padit;
-
- /* Include 8 bytes to store symdefsize and stringsize in output. */
- mapsize = LONG_SIZE + symdefsize + stringsize + LONG_SIZE;
-
- firstreal = SARMAG + sizeof (struct ar_hdr) + mapsize + elength;
-
- memset ((PTR) &hdr, 0, sizeof hdr);
-
- /* Work out the ECOFF armap name. */
- strcpy (hdr.ar_name, ARMAP_START);
- hdr.ar_name[ARMAP_HEADER_MARKER_INDEX] = ARMAP_MARKER;
- hdr.ar_name[ARMAP_HEADER_ENDIAN_INDEX] =
- (abfd->xvec->header_byteorder_big_p
- ? ARMAP_BIG_ENDIAN
- : ARMAP_LITTLE_ENDIAN);
- hdr.ar_name[ARMAP_OBJECT_MARKER_INDEX] = ARMAP_MARKER;
- hdr.ar_name[ARMAP_OBJECT_ENDIAN_INDEX] =
- abfd->xvec->byteorder_big_p ? ARMAP_BIG_ENDIAN : ARMAP_LITTLE_ENDIAN;
- memcpy (hdr.ar_name + ARMAP_END_INDEX, ARMAP_END, sizeof ARMAP_END - 1);
-
- /* Write the timestamp of the archive header to be just a little bit
- later than the timestamp of the file, otherwise the linker will
- complain that the index is out of date. Actually, the Ultrix
- linker just checks the archive name; the GNU linker may check the
- date. */
- stat (abfd->filename, &statbuf);
- sprintf (hdr.ar_date, "%ld", (long) (statbuf.st_mtime + 60));
-
- /* The DECstation uses zeroes for the uid, gid and mode of the
- armap. */
- hdr.ar_uid[0] = '0';
- hdr.ar_gid[0] = '0';
- hdr.ar_mode[0] = '0';
-
- sprintf (hdr.ar_size, "%-10d", (int) mapsize);
-
- hdr.ar_fmag[0] = '`';
- hdr.ar_fmag[1] = '\n';
-
- /* Turn all null bytes in the header into spaces. */
- for (i = 0; i < sizeof (struct ar_hdr); i++)
- if (((char *)(&hdr))[i] == '\0')
- (((char *)(&hdr))[i]) = ' ';
-
- if (bfd_write ((PTR) &hdr, 1, sizeof (struct ar_hdr), abfd)
- != sizeof (struct ar_hdr))
+ if (! mips_read_relocs (abfd, datasec))
return false;
- bfd_h_put_32 (abfd, hashsize, temp);
- if (bfd_write (temp, 1, LONG_SIZE, abfd) != LONG_SIZE)
+ relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 4);
+ if (relsec->contents == NULL)
return false;
-
- hashtable = (bfd_byte *) bfd_zalloc (abfd, symdefsize);
- current = abfd->archive_head;
- last_elt = current;
- for (i = 0; i < orl_count; i++)
+ p = relsec->contents;
+
+ section_tdata = ecoff_section_data (abfd, datasec);
+ ext_rel = (struct external_reloc *) section_tdata->external_relocs;
+ ext_rel_end = ext_rel + datasec->reloc_count;
+ for (; ext_rel < ext_rel_end; ext_rel++, p += 4)
{
- unsigned int hash, rehash;
+ struct internal_reloc int_rel;
+ boolean text_relative;
+
+ mips_ecoff_swap_reloc_in (abfd, (PTR) ext_rel, &int_rel);
- /* Advance firstreal to the file position of this archive
- element. */
- if (((bfd *) map[i].pos) != last_elt)
+ /* We are going to write a four byte word into the runtime reloc
+ section. The word will be the address in the data section
+ which must be relocated. This must be on a word boundary,
+ which means the lower two bits must be zero. We use the
+ least significant bit to indicate how the value in the data
+ section must be relocated. A 0 means that the value is
+ relative to the text section, while a 1 indicates that the
+ value is relative to the data section. Given that we are
+ assuming the code was compiled using -membedded-pic, there
+ should not be any other possibilities. */
+
+ /* We can only relocate REFWORD relocs at run time. */
+ if (int_rel.r_type != MIPS_R_REFWORD)
{
- do
- {
- firstreal += arelt_size (current) + sizeof (struct ar_hdr);
- firstreal += firstreal % 2;
- current = current->next;
- }
- while (current != (bfd *) map[i].pos);
+ *errmsg = "unsupported reloc type";
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
- last_elt = current;
+ if (int_rel.r_extern)
+ {
+ struct ecoff_link_hash_entry *h;
- hash = ecoff_armap_hash (*map[i].name, &rehash, hashsize, hashlog);
- if (bfd_h_get_32 (abfd, (PTR) (hashtable
- + (hash * 2 * LONG_SIZE)
- + LONG_SIZE))
- != 0)
+ h = sym_hashes[int_rel.r_symndx];
+ /* If h is NULL, that means that there is a reloc against an
+ external symbol which we thought was just a debugging
+ symbol. This should not happen. */
+ if (h == (struct ecoff_link_hash_entry *) NULL)
+ abort ();
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags & SEC_CODE) != 0)
+ text_relative = true;
+ else
+ text_relative = false;
+ }
+ else
{
- unsigned int srch;
-
- /* The desired slot is already taken. */
- for (srch = (hash + rehash) & (hashsize - 1);
- srch != hash;
- srch = (srch + rehash) & (hashsize - 1))
- if (bfd_h_get_32 (abfd, (PTR) (hashtable
- + (srch * 2 * LONG_SIZE)
- + LONG_SIZE))
- == 0)
+ switch (int_rel.r_symndx)
+ {
+ case RELOC_SECTION_TEXT:
+ text_relative = true;
break;
-
- BFD_ASSERT (srch != hash);
-
- hash = srch;
+ case RELOC_SECTION_SDATA:
+ case RELOC_SECTION_SBSS:
+ case RELOC_SECTION_LIT8:
+ text_relative = false;
+ break;
+ default:
+ /* No other sections should appear in -membedded-pic
+ code. */
+ *errmsg = "reloc against unsupported section";
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
}
-
- bfd_h_put_32 (abfd, map[i].namidx,
- (PTR) (hashtable + hash * 2 * LONG_SIZE));
- bfd_h_put_32 (abfd, firstreal,
- (PTR) (hashtable + hash * 2 * LONG_SIZE + LONG_SIZE));
- }
-
- if (bfd_write (hashtable, 1, symdefsize, abfd) != symdefsize)
- return false;
-
- bfd_release (abfd, hashtable);
- /* Now write the strings. */
- bfd_h_put_32 (abfd, stringsize, temp);
- if (bfd_write (temp, 1, LONG_SIZE, abfd) != LONG_SIZE)
- return false;
- for (i = 0; i < orl_count; i++)
- {
- bfd_size_type len;
-
- len = strlen (*map[i].name) + 1;
- if (bfd_write ((PTR) (*map[i].name), 1, len, abfd) != len)
- return false;
- }
+ if ((int_rel.r_offset & 3) != 0)
+ {
+ *errmsg = "reloc not properly aligned";
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
- /* The spec sez this should be a newline. But in order to be
- bug-compatible for DECstation ar we use a null. */
- if (padit)
- {
- if (bfd_write ("\0", 1, 1, abfd) != 1)
- return false;
+ bfd_put_32 (abfd,
+ (int_rel.r_vaddr - datasec->vma + datasec->output_offset
+ + (text_relative ? 0 : 1)),
+ p);
}
return true;
}
+\f
+/* This is the ECOFF backend structure. The backend field of the
+ target vector points to this. */
-/* We just use the generic extended name support. This is a GNU
- extension. */
-#define ecoff_slurp_extended_name_table _bfd_slurp_extended_name_table
-
-/* See whether this BFD is an archive. If it is, read in the armap
- and the extended name table. */
-
-static bfd_target *
-ecoff_archive_p (abfd)
- bfd *abfd;
+static const struct ecoff_backend_data mips_ecoff_backend_data =
{
- char armag[SARMAG + 1];
-
- if (bfd_read ((PTR) armag, 1, SARMAG, abfd) != SARMAG
- || strncmp (armag, ARMAG, SARMAG) != 0)
- {
- bfd_error = wrong_format;
- return (bfd_target *) NULL;
- }
+ /* COFF backend structure. */
+ {
+ (void (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR))) bfd_void, /* aux_in */
+ (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */
+ (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */
+ (unsigned (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR)))bfd_void,/*aux_out*/
+ (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */
+ (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */
+ (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* reloc_out */
+ mips_ecoff_swap_filehdr_out, mips_ecoff_swap_aouthdr_out,
+ mips_ecoff_swap_scnhdr_out,
+ FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, true, false, 4,
+ mips_ecoff_swap_filehdr_in, mips_ecoff_swap_aouthdr_in,
+ mips_ecoff_swap_scnhdr_in, NULL,
+ mips_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook,
+ _bfd_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags,
+ _bfd_ecoff_set_alignment_hook, _bfd_ecoff_slurp_symbol_table,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
+ },
+ /* Supported architecture. */
+ bfd_arch_mips,
+ /* Initial portion of armap string. */
+ "__________",
+ /* The page boundary used to align sections in a demand-paged
+ executable file. E.g., 0x1000. */
+ 0x1000,
+ /* True if the .rdata section is part of the text segment, as on the
+ Alpha. False if .rdata is part of the data segment, as on the
+ MIPS. */
+ false,
+ /* Bitsize of constructor entries. */
+ 32,
+ /* Reloc to use for constructor entries. */
+ &mips_howto_table[MIPS_R_REFWORD],
+ {
+ /* Symbol table magic number. */
+ magicSym,
+ /* Alignment of debugging information. E.g., 4. */
+ 4,
+ /* Sizes of external symbolic information. */
+ sizeof (struct hdr_ext),
+ sizeof (struct dnr_ext),
+ sizeof (struct pdr_ext),
+ sizeof (struct sym_ext),
+ sizeof (struct opt_ext),
+ sizeof (struct fdr_ext),
+ sizeof (struct rfd_ext),
+ sizeof (struct ext_ext),
+ /* Functions to swap in external symbolic data. */
+ ecoff_swap_hdr_in,
+ ecoff_swap_dnr_in,
+ ecoff_swap_pdr_in,
+ ecoff_swap_sym_in,
+ ecoff_swap_opt_in,
+ ecoff_swap_fdr_in,
+ ecoff_swap_rfd_in,
+ ecoff_swap_ext_in,
+ _bfd_ecoff_swap_tir_in,
+ _bfd_ecoff_swap_rndx_in,
+ /* Functions to swap out external symbolic data. */
+ ecoff_swap_hdr_out,
+ ecoff_swap_dnr_out,
+ ecoff_swap_pdr_out,
+ ecoff_swap_sym_out,
+ ecoff_swap_opt_out,
+ ecoff_swap_fdr_out,
+ ecoff_swap_rfd_out,
+ ecoff_swap_ext_out,
+ _bfd_ecoff_swap_tir_out,
+ _bfd_ecoff_swap_rndx_out,
+ /* Function to read in symbolic data. */
+ _bfd_ecoff_slurp_symbolic_info
+ },
+ /* External reloc size. */
+ RELSZ,
+ /* Howto reloc table. */
+ mips_howto_table,
+ /* Howto reloc table size. */
+ sizeof mips_howto_table / sizeof mips_howto_table[0],
+ /* Does this backend implement the LITERALSLEAZY reloc? */
+ false,
+ /* Reloc swapping functions. */
+ mips_ecoff_swap_reloc_in,
+ mips_ecoff_swap_reloc_out,
+ /* Backend reloc tweaking. */
+ mips_adjust_reloc_in,
+ mips_adjust_reloc_out,
+ /* Relocate section contents while linking. */
+ mips_relocate_section,
+ /* Do final adjustments to filehdr and aouthdr. */
+ NULL,
+ /* Read an element from an archive at a given file position. */
+ _bfd_get_elt_at_filepos
+};
- /* We are setting bfd_ardata(abfd) here, but since bfd_ardata
- involves a cast, we can't do it as the left operand of
- assignment. */
- abfd->tdata.aout_ar_data =
- (struct artdata *) bfd_zalloc (abfd, sizeof (struct artdata));
+/* Looking up a reloc type is MIPS specific. */
+#define _bfd_ecoff_bfd_reloc_type_lookup mips_bfd_reloc_type_lookup
- if (bfd_ardata (abfd) == (struct artdata *) NULL)
- {
- bfd_error = no_memory;
- return (bfd_target *) NULL;
- }
+/* Getting relocated section contents is generic. */
+#define _bfd_ecoff_bfd_get_relocated_section_contents \
+ bfd_generic_get_relocated_section_contents
- bfd_ardata (abfd)->first_file_filepos = SARMAG;
-
- if (ecoff_slurp_armap (abfd) == false
- || ecoff_slurp_extended_name_table (abfd) == false)
- {
- bfd_release (abfd, bfd_ardata (abfd));
- abfd->tdata.aout_ar_data = (struct artdata *) NULL;
- return (bfd_target *) NULL;
- }
-
- return abfd->xvec;
-}
-\f
-/* This is the COFF backend structure. The backend_data field of the
- bfd_target structure is set to this. The section reading code in
- coffgen.c uses this structure. */
-
-static CONST bfd_coff_backend_data bfd_ecoff_std_swap_table = {
- (void (*) PARAMS ((bfd *,PTR,int,int,PTR))) bfd_void, /* aux_in */
- (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */
- (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */
- (unsigned (*) PARAMS ((bfd *,PTR,int,int,PTR))) bfd_void, /* aux_out */
- (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */
- (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */
- ecoff_swap_reloc_out, ecoff_swap_filehdr_out, ecoff_swap_aouthdr_out,
- ecoff_swap_scnhdr_out,
- FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, true,
- ecoff_swap_filehdr_in, ecoff_swap_aouthdr_in, ecoff_swap_scnhdr_in,
- ecoff_bad_format_hook, ecoff_set_arch_mach_hook, ecoff_mkobject_hook,
- ecoff_styp_to_sec_flags, ecoff_make_section_hook, ecoff_set_alignment_hook,
- ecoff_slurp_symbol_table
-};
+/* Handling file windows is generic. */
+#define _bfd_ecoff_get_section_contents_in_window \
+ _bfd_generic_get_section_contents_in_window
-/* get_lineno could be written for ECOFF, but it would currently only
- be useful for linking ECOFF and COFF files together, which doesn't
- seem too likely. */
-#define ecoff_get_lineno \
- ((alent *(*) PARAMS ((bfd *, asymbol *))) bfd_nullvoidptr)
-
-/* These bfd_target functions are defined in other files. */
-
-#define ecoff_core_file_failing_command _bfd_dummy_core_file_failing_command
-#define ecoff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
-#define ecoff_core_file_matches_executable_p \
- _bfd_dummy_core_file_matches_executable_p
-#define ecoff_truncate_arname bfd_dont_truncate_arname
-#define ecoff_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define ecoff_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define ecoff_get_section_contents bfd_generic_get_section_contents
-#define ecoff_get_reloc_upper_bound coff_get_reloc_upper_bound
-#define ecoff_close_and_cleanup bfd_generic_close_and_cleanup
-#define ecoff_bfd_debug_info_start bfd_void
-#define ecoff_bfd_debug_info_end bfd_void
-#define ecoff_bfd_debug_info_accumulate \
- ((void (*) PARAMS ((bfd *, struct sec *))) bfd_void)
-#define ecoff_bfd_get_relocated_section_contents \
- bfd_generic_get_relocated_section_contents
-#define ecoff_bfd_relax_section bfd_generic_relax_section
-#define ecoff_bfd_make_debug_symbol \
- ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+/* Relaxing sections is MIPS specific. */
+#define _bfd_ecoff_bfd_relax_section mips_relax_section
-bfd_target ecoff_little_vec =
+const bfd_target ecoff_little_vec =
{
"ecoff-littlemips", /* name */
bfd_target_ecoff_flavour,
- false, /* data byte order is little */
- false, /* header byte order is little */
+ BFD_ENDIAN_LITTLE, /* data byte order is little */
+ BFD_ENDIAN_LITTLE, /* header byte order is little */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* sect
- flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
0, /* leading underscore */
- '/', /* ar_pad_char */
+ ' ', /* ar_pad_char */
15, /* ar_max_namelen */
- 3, /* minimum alignment power */
- _do_getl64, _do_getl_signed_64, _do_putl64,
- _do_getl32, _do_getl_signed_32, _do_putl32,
- _do_getl16, _do_getl_signed_16, _do_putl16, /* data */
- _do_getl64, _do_getl_signed_64, _do_putl64,
- _do_getl32, _do_getl_signed_32, _do_putl32,
- _do_getl16, _do_getl_signed_16, _do_putl16, /* hdrs */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
- ecoff_archive_p, _bfd_dummy_target},
- {bfd_false, ecoff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
- bfd_false},
- {bfd_false, ecoff_write_object_contents, /* bfd_write_contents */
+ _bfd_ecoff_archive_p, _bfd_dummy_target},
+ {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
+ _bfd_generic_mkarchive, bfd_false},
+ {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
- JUMP_TABLE (ecoff),
- (PTR) &bfd_ecoff_std_swap_table
+
+ BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
+ BFD_JUMP_TABLE_COPY (_bfd_ecoff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
+ BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
+ BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
+ BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
+ BFD_JUMP_TABLE_LINK (_bfd_ecoff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) &mips_ecoff_backend_data
};
-bfd_target ecoff_big_vec =
+const bfd_target ecoff_big_vec =
{
"ecoff-bigmips", /* name */
bfd_target_ecoff_flavour,
- true, /* data byte order is big */
- true, /* header byte order is big */
+ BFD_ENDIAN_BIG, /* data byte order is big */
+ BFD_ENDIAN_BIG, /* header byte order is big */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* sect flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
0, /* leading underscore */
' ', /* ar_pad_char */
- 16, /* ar_max_namelen */
- 3, /* minimum alignment power */
- _do_getb64, _do_getb_signed_64, _do_putb64,
- _do_getb32, _do_getb_signed_32, _do_putb32,
- _do_getb16, _do_getb_signed_16, _do_putb16,
- _do_getb64, _do_getb_signed_64, _do_putb64,
- _do_getb32, _do_getb_signed_32, _do_putb32,
- _do_getb16, _do_getb_signed_16, _do_putb16,
+ 15, /* ar_max_namelen */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16,
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16,
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
- ecoff_archive_p, _bfd_dummy_target},
- {bfd_false, ecoff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
- bfd_false},
- {bfd_false, ecoff_write_object_contents, /* bfd_write_contents */
+ _bfd_ecoff_archive_p, _bfd_dummy_target},
+ {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
+ _bfd_generic_mkarchive, bfd_false},
+ {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
- JUMP_TABLE(ecoff),
- (PTR) &bfd_ecoff_std_swap_table
- /* Note that there is another bfd_target just above this one. If
- you are adding initializers here, you should be adding them there
- as well. */
+
+ BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
+ BFD_JUMP_TABLE_COPY (_bfd_ecoff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
+ BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
+ BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
+ BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
+ BFD_JUMP_TABLE_LINK (_bfd_ecoff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) &mips_ecoff_backend_data
+};
+
+const bfd_target ecoff_biglittle_vec =
+{
+ "ecoff-biglittlemips", /* name */
+ bfd_target_ecoff_flavour,
+ BFD_ENDIAN_LITTLE, /* data byte order is little */
+ BFD_ENDIAN_BIG, /* header byte order is big */
+
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
+ 0, /* leading underscore */
+ ' ', /* ar_pad_char */
+ 15, /* ar_max_namelen */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
+
+ {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
+ _bfd_ecoff_archive_p, _bfd_dummy_target},
+ {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
+ _bfd_generic_mkarchive, bfd_false},
+ {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
+ BFD_JUMP_TABLE_COPY (_bfd_ecoff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
+ BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
+ BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
+ BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
+ BFD_JUMP_TABLE_LINK (_bfd_ecoff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) &mips_ecoff_backend_data
};
projects / binutils-gdb.git / blobdiff