457 lines
12 KiB
C
457 lines
12 KiB
C
#define BYTES_IN_WORD 4
|
|
#define ARCH 32
|
|
/* #define ENTRY_CAN_BE_ZERO */
|
|
#define N_HEADER_IN_TEXT(x) 1
|
|
#define N_SHARED_LIB(x) 0
|
|
#define N_TXTADDR(x) \
|
|
(N_MAGIC(x) != ZMAGIC ? (x).a_entry : /* object file or NMAGIC */\
|
|
TEXT_START_ADDR + EXEC_BYTES_SIZE /* no padding */\
|
|
)
|
|
#define N_DATADDR(x) (N_TXTADDR(x)+N_TXTSIZE(x))
|
|
#define TEXT_START_ADDR 4096
|
|
#define PAGE_SIZE 4096
|
|
#define SEGMENT_SIZE PAGE_SIZE
|
|
#define DEFAULT_ARCH bfd_arch_mips
|
|
#define MY_symbol_leading_char '\0'
|
|
|
|
#define MY(OP) CAT(mipsbsd_,OP)
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
#include "libaout.h"
|
|
|
|
#define SET_ARCH_MACH(ABFD, EXEC) \
|
|
MY(set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
|
|
MY(choose_reloc_size)(ABFD);
|
|
void DEFUN(MY(set_arch_mach), (abfd, machtype),
|
|
bfd *abfd AND int machtype);
|
|
static void DEFUN(MY(choose_reloc_size),(abfd),bfd *abfd);
|
|
|
|
#define MY_write_object_contents MY(write_object_contents)
|
|
static boolean DEFUN(MY(write_object_contents), (abfd), bfd *abfd);
|
|
|
|
#define MY_reloc_howto_type_lookup MY(reloc_howto_type_lookup)
|
|
#define MY_canonicalize_reloc MY(canonicalize_reloc)
|
|
|
|
#define MY_backend_data &MY(backend_data)
|
|
#define MY_BFD_TARGET
|
|
|
|
#include "aout-target.h"
|
|
|
|
/*
|
|
* These really should be common to all BSD systems.
|
|
* Also, to reduce space, should ifdef the individual cases if MINIMIZE=1.
|
|
*/
|
|
void
|
|
DEFUN(MY(set_arch_mach), (abfd, machtype),
|
|
bfd *abfd AND int machtype)
|
|
{
|
|
enum bfd_architecture arch;
|
|
long machine;
|
|
|
|
/* Determine the architecture and machine type of the object file. */
|
|
switch (machtype) {
|
|
|
|
case M_68010:
|
|
case M_HP200:
|
|
arch = bfd_arch_m68k;
|
|
machine = 68010;
|
|
break;
|
|
|
|
case M_68020:
|
|
case M_HP300:
|
|
arch = bfd_arch_m68k;
|
|
machine = 68020;
|
|
break;
|
|
|
|
case M_SPARC:
|
|
arch = bfd_arch_sparc;
|
|
machine = 0;
|
|
break;
|
|
|
|
case M_386:
|
|
arch = bfd_arch_i386;
|
|
machine = 0;
|
|
break;
|
|
|
|
case M_29K:
|
|
arch = bfd_arch_a29k;
|
|
machine = 0;
|
|
break;
|
|
|
|
case M_HPUX:
|
|
arch = bfd_arch_m68k;
|
|
machine = 0;
|
|
break;
|
|
|
|
case M_MIPS1:
|
|
arch = bfd_arch_mips;
|
|
machine = 3000;
|
|
break;
|
|
|
|
case M_MIPS2:
|
|
arch = bfd_arch_mips;
|
|
machine = 4000;
|
|
break;
|
|
|
|
default:
|
|
arch = bfd_arch_obscure;
|
|
machine = 0;
|
|
break;
|
|
}
|
|
bfd_set_arch_mach(abfd, arch, machine);
|
|
}
|
|
|
|
/* Determine the size of a relocation entry, based on the architecture */
|
|
static void
|
|
DEFUN(MY(choose_reloc_size),(abfd),
|
|
bfd *abfd)
|
|
{
|
|
switch (bfd_get_arch(abfd)) {
|
|
case bfd_arch_sparc:
|
|
case bfd_arch_a29k:
|
|
case bfd_arch_mips:
|
|
obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
|
|
break;
|
|
default:
|
|
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Write an object file in BSD a.out format.
|
|
Section contents have already been written. We write the
|
|
file header, symbols, and relocation. */
|
|
|
|
static boolean
|
|
DEFUN(MY(write_object_contents), (abfd),
|
|
bfd *abfd)
|
|
{
|
|
struct external_exec exec_bytes;
|
|
struct internal_exec *execp = exec_hdr (abfd);
|
|
|
|
/* Magic number, maestro, please! */
|
|
switch (bfd_get_arch(abfd)) {
|
|
case bfd_arch_m68k:
|
|
switch (bfd_get_mach(abfd)) {
|
|
case 68010:
|
|
N_SET_MACHTYPE(*execp, M_68010);
|
|
break;
|
|
default:
|
|
case 68020:
|
|
N_SET_MACHTYPE(*execp, M_68020);
|
|
break;
|
|
}
|
|
break;
|
|
case bfd_arch_sparc:
|
|
N_SET_MACHTYPE(*execp, M_SPARC);
|
|
break;
|
|
case bfd_arch_i386:
|
|
N_SET_MACHTYPE(*execp, M_386);
|
|
break;
|
|
case bfd_arch_a29k:
|
|
N_SET_MACHTYPE(*execp, M_29K);
|
|
break;
|
|
case bfd_arch_mips:
|
|
switch (bfd_get_mach(abfd)) {
|
|
case 4000:
|
|
case 6000:
|
|
N_SET_MACHTYPE(*execp, M_MIPS2);
|
|
break;
|
|
default:
|
|
N_SET_MACHTYPE(*execp, M_MIPS1);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
N_SET_MACHTYPE(*execp, M_UNKNOWN);
|
|
}
|
|
|
|
MY(choose_reloc_size)(abfd);
|
|
|
|
WRITE_HEADERS(abfd, execp);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* MIPS relocation types.
|
|
*/
|
|
#define MIPS_RELOC_32 0
|
|
#define MIPS_RELOC_JMP 1
|
|
#define MIPS_RELOC_WDISP16 2
|
|
#define MIPS_RELOC_HI16 3
|
|
#define MIPS_RELOC_HI16_S 4
|
|
#define MIPS_RELOC_LO16 5
|
|
|
|
/*
|
|
* This is only called when performing a BFD_RELOC_HI16_S relocation.
|
|
* We need to see if bit 15 is set in the result. If it is, we add
|
|
* 0x10000 and continue normally. This will compensate for the sign extension
|
|
* when the low bits are added at run time.
|
|
*/
|
|
bfd_reloc_status_type
|
|
DEFUN(mips_fix_hi16_s, (abfd,reloc_entry,symbol,data,input_section,output_bfd),
|
|
bfd *abfd AND
|
|
arelent *reloc_entry AND
|
|
struct symbol_cache_entry *symbol AND
|
|
PTR data AND
|
|
asection *input_section AND
|
|
bfd *output_bfd)
|
|
{
|
|
bfd_vma relocation;
|
|
|
|
/* If this is a partial relocation, just continue. */
|
|
if (output_bfd != (bfd *)NULL)
|
|
return bfd_reloc_continue;
|
|
|
|
/*
|
|
* Work out which section the relocation is targetted at and the
|
|
* initial relocation command value.
|
|
*/
|
|
if (symbol->section == &bfd_com_section)
|
|
relocation = 0;
|
|
else
|
|
relocation = symbol->value;
|
|
|
|
relocation += symbol->section->output_section->vma;
|
|
relocation += symbol->section->output_offset;
|
|
relocation += reloc_entry->addend;
|
|
|
|
if (relocation & 0x8000)
|
|
reloc_entry->addend += 0x10000;
|
|
|
|
return bfd_reloc_continue;
|
|
}
|
|
|
|
static reloc_howto_type mips_howto_table_ext[] = {
|
|
MIPS_RELOC_32, 0, 2, 32, false, 0, true, true, 0,
|
|
"32", false, 0, 0xffffffff, false,
|
|
MIPS_RELOC_JMP, 2, 2, 26, false, 0, false, true, 0,
|
|
"MIPS_JMP", false, 0, 0x03ffffff, false,
|
|
MIPS_RELOC_WDISP16, 2, 1, 16, true, 0, false, true, 0,
|
|
"WDISP16", false, 0, 0x0000ffff, false,
|
|
MIPS_RELOC_HI16, 16, 1, 16, false, 0, false, true, 0,
|
|
"HI16", false, 0, 0x0000ffff, false,
|
|
MIPS_RELOC_HI16_S, 16, 1, 16, false, 0, false, true, mips_fix_hi16_s,
|
|
"HI16_S", false, 0, 0x0000ffff, false,
|
|
MIPS_RELOC_LO16, 0, 1, 16, false, 0, false, true, 0,
|
|
"LO16", false, 0, 0x0000ffff, false,
|
|
};
|
|
|
|
static reloc_howto_type *
|
|
MY(reloc_howto_type_lookup) (abfd, code)
|
|
bfd *abfd;
|
|
bfd_reloc_code_real_type code;
|
|
{
|
|
extern reloc_howto_type NAME(aout,ext_howto_table)[];
|
|
|
|
switch (bfd_get_arch (abfd))
|
|
{
|
|
case bfd_arch_sparc:
|
|
switch (code)
|
|
{
|
|
default:
|
|
return 0;
|
|
#define IDX(i,j) case i: return &NAME(aout,ext_howto_table)[j]
|
|
IDX (BFD_RELOC_CTOR, 2);
|
|
IDX (BFD_RELOC_32, 2);
|
|
IDX (BFD_RELOC_HI22, 8);
|
|
IDX (BFD_RELOC_LO10, 11);
|
|
IDX (BFD_RELOC_32_PCREL_S2, 6);
|
|
}
|
|
case bfd_arch_mips:
|
|
switch (code)
|
|
{
|
|
case BFD_RELOC_32:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_32]);
|
|
case BFD_RELOC_MIPS_JMP:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_JMP]);
|
|
case BFD_RELOC_16_PCREL_S2:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_WDISP16]);
|
|
case BFD_RELOC_HI16:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_HI16]);
|
|
case BFD_RELOC_HI16_S:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_HI16_S]);
|
|
case BFD_RELOC_LO16:
|
|
return (&mips_howto_table_ext[MIPS_RELOC_LO16]);
|
|
default:
|
|
return 0;
|
|
}
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This is just like the standard aoutx.h version but we need to do our
|
|
* own mapping of external reloc type values to howto entries.
|
|
*/
|
|
unsigned int
|
|
MY(canonicalize_reloc)(abfd, section, relptr, symbols)
|
|
bfd *abfd;
|
|
sec_ptr section;
|
|
arelent **relptr;
|
|
asymbol **symbols;
|
|
{
|
|
arelent *tblptr = section->relocation;
|
|
unsigned int count, c;
|
|
extern reloc_howto_type NAME(aout,ext_howto_table)[];
|
|
|
|
/* If we have already read in the relocation table, return the values. */
|
|
if (section->flags & SEC_CONSTRUCTOR) {
|
|
arelent_chain *chain = section->constructor_chain;
|
|
|
|
for (count = 0; count < section->reloc_count; count++) {
|
|
*relptr++ = &chain->relent;
|
|
chain = chain->next;
|
|
}
|
|
*relptr = 0;
|
|
return section->reloc_count;
|
|
}
|
|
if (tblptr && section->reloc_count) {
|
|
for (count = 0; count++ < section->reloc_count;)
|
|
*relptr++ = tblptr++;
|
|
*relptr = 0;
|
|
return section->reloc_count;
|
|
}
|
|
|
|
if (!NAME(aout,slurp_reloc_table)(abfd, section, symbols))
|
|
return 0;
|
|
tblptr = section->relocation;
|
|
if (!tblptr)
|
|
return 0;
|
|
|
|
/* fix up howto entries */
|
|
for (count = 0; count++ < section->reloc_count;)
|
|
{
|
|
c = tblptr->howto - NAME(aout,ext_howto_table);
|
|
tblptr->howto = &mips_howto_table_ext[c];
|
|
|
|
*relptr++ = tblptr++;
|
|
}
|
|
*relptr = 0;
|
|
return section->reloc_count;
|
|
}
|
|
|
|
static CONST struct aout_backend_data MY(backend_data) = {
|
|
0, /* zmagic contiguous */
|
|
1, /* text incl header */
|
|
PAGE_SIZE, /* text vma */
|
|
MY_set_sizes,
|
|
0, /* text size includes exec header */
|
|
};
|
|
|
|
bfd_target aout_mips_little_vec =
|
|
{
|
|
"aout-mips-little", /* name */
|
|
bfd_target_aout_flavour,
|
|
false, /* target byte order (little) */
|
|
false, /* target headers byte order (little) */
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
MY_symbol_leading_char,
|
|
' ', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
1, /* minimum alignment */
|
|
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
|
|
_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
|
|
{_bfd_dummy_target, MY_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, MY_core_file_p},
|
|
{bfd_false, MY_mkobject, /* bfd_set_format */
|
|
_bfd_generic_mkarchive, bfd_false},
|
|
{bfd_false, MY_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
MY_core_file_failing_command,
|
|
MY_core_file_failing_signal,
|
|
MY_core_file_matches_executable_p,
|
|
MY_slurp_armap,
|
|
MY_slurp_extended_name_table,
|
|
MY_truncate_arname,
|
|
MY_write_armap,
|
|
MY_close_and_cleanup,
|
|
MY_set_section_contents,
|
|
MY_get_section_contents,
|
|
MY_new_section_hook,
|
|
MY_get_symtab_upper_bound,
|
|
MY_get_symtab,
|
|
MY_get_reloc_upper_bound,
|
|
MY_canonicalize_reloc,
|
|
MY_make_empty_symbol,
|
|
MY_print_symbol,
|
|
MY_get_lineno,
|
|
MY_set_arch_mach,
|
|
MY_openr_next_archived_file,
|
|
MY_find_nearest_line,
|
|
MY_generic_stat_arch_elt,
|
|
MY_sizeof_headers,
|
|
MY_bfd_debug_info_start,
|
|
MY_bfd_debug_info_end,
|
|
MY_bfd_debug_info_accumulate,
|
|
bfd_generic_get_relocated_section_contents,
|
|
bfd_generic_relax_section,
|
|
MY_reloc_howto_type_lookup,
|
|
MY_make_debug_symbol,
|
|
(PTR) MY_backend_data,
|
|
};
|
|
|
|
bfd_target aout_mips_big_vec =
|
|
{
|
|
"aout-mips-big", /* name */
|
|
bfd_target_aout_flavour,
|
|
true, /* target byte order (big) */
|
|
true, /* target headers byte order (big) */
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
MY_symbol_leading_char,
|
|
' ', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
1, /* minimum alignment */
|
|
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
|
|
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
|
|
{_bfd_dummy_target, MY_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, MY_core_file_p},
|
|
{bfd_false, MY_mkobject, /* bfd_set_format */
|
|
_bfd_generic_mkarchive, bfd_false},
|
|
{bfd_false, MY_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
MY_core_file_failing_command,
|
|
MY_core_file_failing_signal,
|
|
MY_core_file_matches_executable_p,
|
|
MY_slurp_armap,
|
|
MY_slurp_extended_name_table,
|
|
MY_truncate_arname,
|
|
MY_write_armap,
|
|
MY_close_and_cleanup,
|
|
MY_set_section_contents,
|
|
MY_get_section_contents,
|
|
MY_new_section_hook,
|
|
MY_get_symtab_upper_bound,
|
|
MY_get_symtab,
|
|
MY_get_reloc_upper_bound,
|
|
MY_canonicalize_reloc,
|
|
MY_make_empty_symbol,
|
|
MY_print_symbol,
|
|
MY_get_lineno,
|
|
MY_set_arch_mach,
|
|
MY_openr_next_archived_file,
|
|
MY_find_nearest_line,
|
|
MY_generic_stat_arch_elt,
|
|
MY_sizeof_headers,
|
|
MY_bfd_debug_info_start,
|
|
MY_bfd_debug_info_end,
|
|
MY_bfd_debug_info_accumulate,
|
|
bfd_generic_get_relocated_section_contents,
|
|
bfd_generic_relax_section,
|
|
MY_reloc_howto_type_lookup,
|
|
MY_make_debug_symbol,
|
|
(PTR) MY_backend_data,
|
|
};
|