/* BFD back-end for Motorola 88000 COFF "Binary Compatability Standard" files.
- Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
#define M88 1 /* Customize various include files */
#include "bfd.h"
#include "coff/m88k.h"
#include "coff/internal.h"
#include "libcoff.h"
-#undef HOWTO_PREPARE
-/* Provided the symbol, returns the value reffed */
-#define HOWTO_PREPARE(relocation, symbol) \
- { \
- if (symbol != (asymbol *)NULL) { \
- if (bfd_is_com_section (symbol->section)) { \
- relocation = 0; \
- } \
- else { \
- relocation = symbol->value; \
- } \
- } \
- if (symbol->section != (asection *)NULL) { \
- relocation += symbol->section->output_section->vma + \
- symbol->section->output_offset; \
- } \
-}
+static bfd_reloc_status_type m88k_special_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
+static void reloc_processing
+ PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
static bfd_reloc_status_type
-howto_hvrt16 (abfd, reloc_entry, symbol_in, data,
- ignore_input_section, ignore_bfd, error_message)
+m88k_special_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
- asymbol *symbol_in;
+ asymbol *symbol;
PTR data;
- asection *ignore_input_section;
- bfd *ignore_bfd;
+ asection *input_section;
+ bfd *output_bfd;
char **error_message;
{
- long relocation = 0;
- bfd_vma addr = reloc_entry->address;
- long x = bfd_get_16(abfd, (bfd_byte *)data + addr);
+ reloc_howto_type *howto = reloc_entry->howto;
- HOWTO_PREPARE(relocation, symbol_in);
+ switch (howto->type)
+ {
+ case R_HVRT16:
+ case R_LVRT16:
+ if (output_bfd != (bfd *) NULL)
+ {
+ /* This is a partial relocation, and we want to apply the
+ relocation to the reloc entry rather than the raw data.
+ Modify the reloc inplace to reflect what we now know. */
- x = (x + relocation + reloc_entry->addend) >> 16;
+ reloc_entry->address += input_section->output_offset;
+ }
+ else
+ {
+ bfd_vma output_base = 0;
+ bfd_vma addr = reloc_entry->address;
+ bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
+ asection *reloc_target_output_section;
+ long relocation = 0;
- bfd_put_16(abfd, x, (bfd_byte *)data + addr);
- return bfd_reloc_ok;
-}
+ /* Work out which section the relocation is targetted at and the
+ initial relocation command value. */
+
+ /* Get symbol value. (Common symbols are special.) */
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ reloc_target_output_section = symbol->section->output_section;
+
+ /* Convert input-section-relative symbol value to absolute. */
+ if (output_bfd)
+ output_base = 0;
+ else
+ output_base = reloc_target_output_section->vma;
+
+ relocation += output_base + symbol->section->output_offset;
+
+ /* Add in supplied addend. */
+ relocation += ((reloc_entry->addend << howto->bitsize) + x);
+
+ reloc_entry->addend = 0;
+ relocation >>= (bfd_vma) howto->rightshift;
+ /* Shift everything up to where it's going to be used */
+
+ relocation <<= (bfd_vma) howto->bitpos;
+
+ if (relocation)
+ bfd_put_16 (abfd, relocation, (unsigned char *) data + addr);
+ }
+
+ return bfd_reloc_ok;
+ break;
+
+ default:
+ if (output_bfd != (bfd *) NULL)
+ {
+ /* This is a partial relocation, and we want to apply the
+ relocation to the reloc entry rather than the raw data.
+ Modify the reloc inplace to reflect what we now know. */
+
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+ break;
+ }
+
+ if (output_bfd == (bfd *) NULL)
+ return bfd_reloc_continue;
+
+ return bfd_reloc_ok;
+}
static reloc_howto_type howto_table[] =
{
- HOWTO(R_PCR16L,02,1,16,true, 0,complain_overflow_signed, 0, "PCR16L",false,0x0000ffff,0x0000ffff,true),
- HOWTO(R_PCR26L,02,2,26,true, 0,complain_overflow_signed, 0, "PCR26L",false,0x03ffffff,0x03ffffff,true),
- HOWTO(R_VRT16, 00,1,16,false,0,complain_overflow_bitfield, 0, "VRT16", false,0x0000ffff,0x0000ffff,true),
- HOWTO(R_HVRT16,16,1,16,false,0,complain_overflow_dont,howto_hvrt16,"HVRT16",false,0x0000ffff,0x0000ffff,true),
- HOWTO(R_LVRT16,00,1,16,false,0,complain_overflow_dont, 0, "LVRT16",false,0x0000ffff,0x0000ffff,true),
- HOWTO(R_VRT32, 00,2,32,false,0,complain_overflow_bitfield, 0, "VRT32", false,0xffffffff,0xffffffff,true),
+ HOWTO (R_PCR16L, /* type */
+ 02, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "PCR16L", /* name */
+ false, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_PCR26L, /* type */
+ 02, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "PCR26L", /* name */
+ false, /* partial_inplace */
+ 0x03ffffff, /* src_mask */
+ 0x03ffffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_VRT16, /* type */
+ 00, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "VRT16", /* name */
+ false, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_HVRT16, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "HVRT16", /* name */
+ false, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_LVRT16, /* type */
+ 00, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "LVRT16", /* name */
+ false, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_VRT32, /* type */
+ 00, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "VRT32", /* name */
+ false, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ true), /* pcrel_offset */
};
+/* Code to turn an external r_type into a pointer to an entry in the
+ above howto table. */
+static void
+rtype2howto (cache_ptr, dst)
+ arelent *cache_ptr;
+ struct internal_reloc *dst;
+{
+ if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
+ {
+ cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
+ }
+ else
+ {
+ BFD_ASSERT (0);
+ }
+}
+
+#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
+
/* Code to swap in the reloc offset */
-#define SWAP_IN_RELOC_OFFSET bfd_h_get_16
+#define SWAP_IN_RELOC_OFFSET bfd_h_get_16
#define SWAP_OUT_RELOC_OFFSET bfd_h_put_16
-/* Code to turn an external r_type into a pointer to an entry in the
- above howto table */
-#define RTYPE2HOWTO(cache_ptr, dst) \
- if ((dst)->r_type >= R_PCR16L && (dst)->r_type <= R_VRT32) {\
- cache_ptr->howto = howto_table + (dst)->r_type - R_PCR16L;\
- cache_ptr->addend += (dst)->r_offset << 16; \
- } \
- else { \
- BFD_ASSERT(0); \
- }
+#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
+ reloc_processing(relent, reloc, symbols, abfd, section)
+static void
+reloc_processing (relent, reloc, symbols, abfd, section)
+ arelent *relent;
+ struct internal_reloc *reloc;
+ asymbol **symbols;
+ bfd *abfd;
+ asection *section;
+{
+ relent->address = reloc->r_vaddr;
+ rtype2howto (relent, reloc);
+ if (((int) reloc->r_symndx) > 0)
+ {
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
+ }
+ else
+ {
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+
+ relent->addend = reloc->r_offset;
+ relent->address -= section->vma;
+}
#define BADMAG(x) MC88BADMAG(x)
#include "coffcode.h"
#undef coff_write_armap
-bfd_target m88kbcs_vec =
+const bfd_target m88kbcs_vec =
{
"coff-m88kbcs", /* name */
bfd_target_coff_flavour,
'_', /* leading underscore */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
- 3, /* default alignment power */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
BFD_JUMP_TABLE_RELOCS (coff),
BFD_JUMP_TABLE_WRITE (coff),
BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
COFF_SWAP_TABLE,
};
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