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* elf32-mn10300.c (bfd_elf32_mn10300_reloc): New function.

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(enum reloc_type): Add more reloc types.
        (elf32_mn10300_howto_table): Update for new reloc types.
        (elf32_mn10300_reloc_map): Update for new reloc types.
        * reloc.c: Add some new relocs for the mn10300 series.
        * bfd-in2.h, libbfd.h: Rebuilt.
Last week's reloc work.
This commit is contained in:
Jeff Law
1996-11-25 15:59:07 +00:00
parent 0671e7f6c6
commit 12fdaaf821
2 changed files with 184 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
bfd/ChangeLog
View File

@ -1,3 +1,12 @@
Mon Nov 25 08:52:29 1996 Jeffrey A Law (law@cygnus.com)
* elf32-mn10300.c (bfd_elf32_mn10300_reloc): New function.
(enum reloc_type): Add more reloc types.
(elf32_mn10300_howto_table): Update for new reloc types.
(elf32_mn10300_reloc_map): Update for new reloc types.
* reloc.c: Add some new relocs for the mn10300 series.
* bfd-in2.h, libbfd.h: Rebuilt.
Sat Nov 23 13:26:18 1996 Jeffrey A Law (law@cygnus.com) Sat Nov 23 13:26:18 1996 Jeffrey A Law (law@cygnus.com)
* som.c (setup_sections): Don't lose for a space which has * som.c (setup_sections): Don't lose for a space which has

192
bfd/elf32-mn10300.c
View File

@ -26,6 +26,9 @@ static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void mn10300_info_to_howto_rel static void mn10300_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
static bfd_reloc_status_type bfd_elf32_mn10300_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
/* Try to minimize the amount of space occupied by relocation tables /* Try to minimize the amount of space occupied by relocation tables
on the ROM (not that the ROM won't be swamped by other ELF overhead). */ on the ROM (not that the ROM won't be swamped by other ELF overhead). */
@ -37,9 +40,13 @@ enum reloc_type
R_MN10300_32, R_MN10300_32,
R_MN10300_16, R_MN10300_16,
R_MN10300_8, R_MN10300_8,
R_MN10300_PCREL32, R_MN10300_32B,
R_MN10300_PCREL16, R_MN10300_16B,
R_MN10300_PCREL8, R_MN10300_PCREL32_1BYTE,
R_MN10300_PCREL16_1BYTE,
R_MN10300_PCREL8_1BYTE,
R_MN10300_PCREL32_2BYTE,
R_MN10300_PCREL16_2BYTE,
R_MN10300_MAX R_MN10300_MAX
}; };
@ -98,45 +105,97 @@ static reloc_howto_type elf_mn10300_howto_table[] =
0xff, 0xff,
0xff, 0xff,
false), false),
HOWTO (R_MN10300_PCREL32, HOWTO (R_MN10300_32B,
0,
2,
32,
false,
0,
complain_overflow_bitfield,
bfd_elf32_mn10300_reloc,
"R_MN10300_32B",
true,
0xffffffff,
0xffffffff,
false),
HOWTO (R_MN10300_16B,
0,
1,
16,
false,
0,
complain_overflow_bitfield,
bfd_elf32_mn10300_reloc,
"R_MN10300_16B",
true,
0xffff,
0xffff,
false),
HOWTO (R_MN10300_PCREL32_1BYTE,
0, 0,
2, 2,
32, 32,
true, true,
0, 0,
complain_overflow_bitfield, complain_overflow_bitfield,
bfd_elf_generic_reloc, bfd_elf32_mn10300_reloc,
"R_MN10300_PCREL32", "R_MN10300_PCREL32_1BYTE",
true, true,
0xffffffff, 0xffffffff,
0xffffffff, 0xffffffff,
false), false),
HOWTO (R_MN10300_PCREL16, HOWTO (R_MN10300_PCREL16_1BYTE,
0, 0,
1, 1,
16, 16,
true, true,
0, 0,
complain_overflow_bitfield, complain_overflow_bitfield,
bfd_elf_generic_reloc, bfd_elf32_mn10300_reloc,
"R_MN10300_PCREL16", "R_MN10300_PCREL16_1BYTE",
true, true,
0xffff, 0xffff,
0xffff, 0xffff,
false), false),
HOWTO (R_MN10300_PCREL8, HOWTO (R_MN10300_PCREL8_1BYTE,
0, 0,
0, 0,
8, 8,
true, true,
0, 0,
complain_overflow_bitfield, complain_overflow_bitfield,
bfd_elf_generic_reloc, bfd_elf32_mn10300_reloc,
"R_MN10300_PCREL8", "R_MN10300_PCREL8_1BYTE",
true, true,
0xff, 0xff,
0xff, 0xff,
false), true),
HOWTO (R_MN10300_PCREL32_2BYTE,
0,
2,
32,
true,
0,
complain_overflow_bitfield,
bfd_elf32_mn10300_reloc,
"R_MN10300_PCREL32_2BYTE",
true,
0xffffffff,
0xffffffff,
true),
HOWTO (R_MN10300_PCREL16_2BYTE,
0,
1,
16,
true,
0,
complain_overflow_bitfield,
bfd_elf32_mn10300_reloc,
"R_MN10300_PCREL16_2BYTE",
true,
0xffff,
0xffff,
true),
}; };
struct mn10300_reloc_map struct mn10300_reloc_map
@ -151,9 +210,13 @@ static const struct mn10300_reloc_map mn10300_reloc_map[] =
{ BFD_RELOC_32, R_MN10300_32, }, { BFD_RELOC_32, R_MN10300_32, },
{ BFD_RELOC_16, R_MN10300_16, }, { BFD_RELOC_16, R_MN10300_16, },
{ BFD_RELOC_8, R_MN10300_8, }, { BFD_RELOC_8, R_MN10300_8, },
{ BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, { BFD_RELOC_MN10300_32B, R_MN10300_32B, },
{ BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, { BFD_RELOC_MN10300_16B, R_MN10300_16B, },
{ BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, { BFD_RELOC_32_PCREL, R_MN10300_PCREL32_1BYTE, },
{ BFD_RELOC_16_PCREL, R_MN10300_PCREL16_1BYTE, },
{ BFD_RELOC_8_PCREL, R_MN10300_PCREL8_1BYTE, },
{ BFD_RELOC_MN10300_32_PCREL, R_MN10300_PCREL32_2BYTE, },
{ BFD_RELOC_MN10300_16_PCREL, R_MN10300_PCREL16_2BYTE, },
}; };
static reloc_howto_type * static reloc_howto_type *
@ -174,7 +237,7 @@ bfd_elf32_bfd_reloc_type_lookup (abfd, code)
return NULL; return NULL;
} }
/* Set the howto pointer for an V850 ELF reloc. */ /* Set the howto pointer for an MN10300 ELF reloc. */
static void static void
mn10300_info_to_howto_rel (abfd, cache_ptr, dst) mn10300_info_to_howto_rel (abfd, cache_ptr, dst)
@ -189,6 +252,101 @@ mn10300_info_to_howto_rel (abfd, cache_ptr, dst)
cache_ptr->howto = &elf_mn10300_howto_table[r_type]; cache_ptr->howto = &elf_mn10300_howto_table[r_type];
} }
static bfd_reloc_status_type
bfd_elf32_mn10300_reloc (abfd, reloc, symbol, data, isection, obfd, err)
bfd *abfd;
arelent *reloc;
asymbol *symbol;
PTR data;
asection *isection;
bfd *obfd;
char **err;
{
if (obfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! reloc->howto->partial_inplace
|| reloc->addend == 0))
{
reloc->address += isection->output_offset;
return bfd_reloc_ok;
}
else if (obfd != NULL)
{
return bfd_reloc_continue;
}
/* Catch relocs involving undefined symbols. */
if (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) == 0
&& obfd == NULL)
return bfd_reloc_undefined;
/* We handle final linking of some relocs ourselves. */
{
long relocation, insn;
/* Is the address of the relocation really within the section? */
if (reloc->address > isection->_cooked_size)
return bfd_reloc_outofrange;
/* 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;
/* Convert input-section-relative symbol value to absolute + addend. */
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc->addend;
if (reloc->howto->pc_relative == true)
{
/* Here the variable relocation holds the final address of the
symbol we are relocating against, plus any addend. */
relocation -= isection->output_section->vma + isection->output_offset;
/* Deal with pcrel_offset */
relocation -= reloc->address;
if (reloc->howto->type == R_MN10300_PCREL32_1BYTE
|| reloc->howto->type == R_MN10300_PCREL16_1BYTE
|| reloc->howto->type == R_MN10300_PCREL8_1BYTE)
relocation += 1;
else if (reloc->howto->type == R_MN10300_PCREL32_2BYTE
|| reloc->howto->type == R_MN10300_PCREL16_2BYTE)
relocation += 2;
}
/* I've got no clue... */
reloc->addend = 0;
if (reloc->howto->size == 0)
{
if (relocation > 0x7f || relocation < -0x80)
return bfd_reloc_overflow;
bfd_put_8 (abfd, relocation & 0xff,
(bfd_byte *)data + reloc->address);
}
else if (reloc->howto->size == 1)
{
if (relocation > 0x7fff || relocation < -0x8000)
return bfd_reloc_overflow;
bfd_putb16 (relocation & 0xffff, (bfd_byte *)data + reloc->address);
}
else if (reloc->howto->size == 2)
bfd_putb32 (relocation, (bfd_byte *)data + reloc->address);
return bfd_reloc_ok;
}
return bfd_reloc_continue;
}
#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
#define TARGET_LITTLE_NAME "elf32-mn10300" #define TARGET_LITTLE_NAME "elf32-mn10300"
#define ELF_ARCH bfd_arch_mn10300 #define ELF_ARCH bfd_arch_mn10300