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MIPS changes.

This commit is contained in:
Ulrich Drepper 1997-06-21 02:00:23 +00:00
parent bcb5cee069
commit 0134d025bc
5 changed files with 394 additions and 149 deletions
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43
sysdeps/mips/bsd-_setjmp.S
View File

@ -1,21 +1,21 @@
/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. MIPS version.
Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
We cannot do it in C because it must be a tail-call, so frame-unwinding
@ -23,7 +23,14 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
ENTRY (setjmp)
j C_SYMBOL_NAME (__sigsetjmp)
li a1, $0 /* Pass a second argument of zero. */
.end setjmp
#ifdef PIC
.option pic2
#endif
ENTRY (_setjmp)
#ifdef PIC
.cpload t9
#endif
la t9, C_SYMBOL_NAME (__sigsetjmp)
nop
jr t9
li a1, 0 /* Pass a second argument of zero. */

39
sysdeps/mips/bsd-setjmp.S
View File

@ -1,21 +1,21 @@
/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. MIPS version.
Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
We cannot do it in C because it must be a tail-call, so frame-unwinding
@ -23,7 +23,14 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
#ifdef PIC
.option pic2
#endif
ENTRY (setjmp)
j C_SYMBOL_NAME (__sigsetjmp)
#ifdef PIC
.cpload t9
#endif
la t9, C_SYMBOL_NAME (__sigsetjmp)
nop
jr t9
li a1, 1 /* Pass a second argument of one. */
.end setjmp

387
sysdeps/mips/dl-machine.h
View File

@ -18,30 +18,25 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef dl_machine_h
#define dl_machine_h
#define ELF_MACHINE_NAME "MIPS"
#include <assert.h>
#include <string.h>
#include <link.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
/* Translate a processor specific dynamic tag to the index
in l_info array. */
#define DT_MIPS(x) (DT_MIPS_##x - DT_LOPROC + DT_NUM)
#if 1
/* XXX If FLAGS has the MAP_ALIGN bit, we need 64k alignment. */
#ifndef MAP_ALIGN
#define MAP_ALIGN 0x1000
#endif
#define ELF_MACHINE_ALIGN_MASK(flags) ((flags & MAP_ALIGN) ? 0xffff : 0)
#if 0
/* We may need 64k alignment. */
#define ELF_MACHINE_ALIGN_MASK 0xffff
#endif
/* If there is a DT_MIPS_RLD_MAP entry in the dynamic section, fill it in
with the run-time address of the r_debug structure */
#define ELF_MACHINE_SET_DEBUG(l,r) \
#define ELF_MACHINE_DEBUG_SETUP(l,r) \
do { if ((l)->l_info[DT_MIPS (RLD_MAP)]) \
*(ElfW(Addr) *)((l)->l_info[DT_MIPS (RLD_MAP)]->d_un.d_ptr) = \
(ElfW(Addr)) (r); \
@ -67,14 +62,16 @@ elf_mips_got_from_gpreg (ElfW(Addr) gpreg)
/* FIXME: the offset of gp from GOT may be system-dependent. */
return (ElfW(Addr) *) (gpreg - 0x7ff0);
}
/* Return the link-time address of _DYNAMIC. Conveniently, this is the
first element of the GOT. This must be inlined in a function which
uses global data. */
static inline ElfW(Addr)
elf_machine_dynamic (void)
/* Return the run-time address of the _GLOBAL_OFFSET_TABLE_.
Must be inlined in a function which uses global data. */
static inline ElfW(Addr) *
elf_machine_got (void)
{
register ElfW(Addr) gp asm ("$28");
return * (ElfW(Addr) *) (gp - 0x7ff0);
ElfW(Addr) gp;
__asm__ __volatile__("move %0, $28\n\t" : "=r" (gp));
return elf_mips_got_from_gpreg (gp);
}
@ -83,6 +80,15 @@ static inline ElfW(Addr)
elf_machine_load_address (void)
{
ElfW(Addr) addr;
#ifdef __mips64
asm (" .set noreorder\n"
" dla %0, here\n"
" bltzal $0, here\n"
" nop\n"
"here: dsubu %0, $31, %0\n"
" .set reorder\n"
: "=r" (addr));
#else
asm (" .set noreorder\n"
" la %0, here\n"
" bltzal $0, here\n"
@ -90,6 +96,7 @@ elf_machine_load_address (void)
"here: subu %0, $31, %0\n"
" .set reorder\n"
: "=r" (addr));
#endif
return addr;
}
@ -97,7 +104,7 @@ elf_machine_load_address (void)
#define ELF_MIPS_GNU_GOT1_MASK 0x80000000
/* Relocate GOT. */
static void
static inline void
elf_machine_got_rel (struct link_map *map)
{
ElfW(Addr) *got;
@ -107,14 +114,14 @@ elf_machine_got_rel (struct link_map *map)
const char *strtab
= ((void *) map->l_addr + map->l_info[DT_STRTAB]->d_un.d_ptr);
ElfW(Addr) resolve (const ElfW(Sym) *sym)
{
const ElfW(Sym) *ref = sym;
ElfW(Addr) sym_loadaddr;
sym_loadaddr = _dl_lookup_symbol (strtab + sym->st_name, &ref, scope,
map->l_name, 0, 1);
return (ref)? sym_loadaddr + ref->st_value: 0;
}
#define RESOLVE_GOTSYM(sym) \
({ \
const ElfW(Sym) *ref = sym; \
ElfW(Addr) sym_loadaddr; \
sym_loadaddr = _dl_lookup_symbol (strtab + sym->st_name, &ref, scope, \
map->l_name, DL_LOOKUP_NOPLT); \
(ref)? sym_loadaddr + ref->st_value: 0; \
})
got = (ElfW(Addr) *) ((void *) map->l_addr
+ map->l_info[DT_PLTGOT]->d_un.d_ptr);
@ -147,39 +154,35 @@ elf_machine_got_rel (struct link_map *map)
if (sym->st_value /* && maybe_stub (sym->st_value) */)
*got = sym->st_value + map->l_addr;
else
*got = resolve (sym);
*got = RESOLVE_GOTSYM (sym);
}
else /* if (*got == 0 || *got == QS) */
*got = resolve (sym);
*got = RESOLVE_GOTSYM (sym);
}
else if (sym->st_shndx == SHN_COMMON)
*got = resolve (sym);
*got = RESOLVE_GOTSYM (sym);
else if (ELFW(ST_TYPE) (sym->st_info) == STT_FUNC
&& *got != sym->st_value
/* && maybe_stub (*got) */)
*got += map->l_addr;
else if (ELFW(ST_TYPE) (sym->st_info) == STT_SECTION
&& ELFW(ST_BIND) (sym->st_info) == STB_GLOBAL)
else if (ELFW(ST_TYPE) (sym->st_info) == STT_SECTION)
{
if (sym->st_other == 0 && sym->st_shndx == SHN_ABS)
*got = sym->st_value + map->l_addr; /* only for _gp_disp */
/* else SGI stuff ignored */
if (sym->st_other == 0)
*got += map->l_addr;
}
else
*got = resolve (sym);
*got = RESOLVE_GOTSYM (sym);
got++;
sym++;
}
#undef RESOLVE_GOTSYM
*_dl_global_scope_end = NULL;
return;
}
/* The MIPS never uses Elfxx_Rela relocations. */
#define ELF_MACHINE_NO_RELA 1
/* Set up the loaded object described by L so its stub function
will jump to the on-demand fixup code in dl-runtime.c. */
@ -188,6 +191,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy)
{
ElfW(Addr) *got;
extern void _dl_runtime_resolve (ElfW(Word));
extern int _dl_mips_gnu_objects;
if (lazy)
{
@ -208,7 +212,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy)
if ((got[1] & ELF_MIPS_GNU_GOT1_MASK) != 0)
got[1] = (ElfW(Addr)) ((unsigned) l | ELF_MIPS_GNU_GOT1_MASK);
else
; /* Do nothing. */
_dl_mips_gnu_objects = 0;
}
/* Relocate global offset table. */
@ -219,29 +223,64 @@ elf_machine_runtime_setup (struct link_map *l, int lazy)
/* Get link_map for this object. */
static inline struct link_map *
elf_machine_runtime_link_map (ElfW(Addr) gpreg)
elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
{
ElfW(Addr) *got = elf_mips_got_from_gpreg (gpreg);
ElfW(Word) g1;
g1 = ((ElfW(Word) *) got)[1];
extern int _dl_mips_gnu_objects;
/* got[1] is reserved to keep its link map address for the shared
object generated by gnu linker. If not so, we must search GOT
in object list slowly. XXX */
if ((g1 & ELF_MIPS_GNU_GOT1_MASK) != 0)
return (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
else
object generated by gnu linker. If all are such object, we can
find link map from current GPREG simply. If not so, get link map
for callers object containing STUB_PC. */
if (_dl_mips_gnu_objects)
{
ElfW(Addr) *got = elf_mips_got_from_gpreg (gpreg);
ElfW(Word) g1;
g1 = ((ElfW(Word) *) got)[1];
if ((g1 & ELF_MIPS_GNU_GOT1_MASK) != 0)
return (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
}
{
struct link_map *l = _dl_loaded;
struct link_map *ret = 0;
ElfW(Addr) candidate = 0;
while (l)
{
if (got == (ElfW(Addr) *) ((void *) l->l_addr
+ l->l_info[DT_PLTGOT]->d_un.d_ptr))
return l;
ElfW(Addr) base = 0;
const ElfW(Phdr) *p = l->l_phdr;
ElfW(Half) this, nent = l->l_phnum;
/* Get the base. */
for (this = 0; this < nent; this++)
if (p[this].p_type == PT_LOAD)
{
base = p[this].p_vaddr + l->l_addr;
break;
}
if (! base)
{
l = l->l_next;
continue;
}
/* Find closest link base addr. */
if ((base < stub_pc) && (candidate < base))
{
candidate = base;
ret = l;
}
l = l->l_next;
}
if (candidate && ret && (candidate < stub_pc))
return ret;
else if (!candidate)
return _dl_loaded;
}
_dl_signal_error (0, NULL, "cannot find runtime link map");
}
@ -255,17 +294,24 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg)
t8 index for this function symbol in .dynsym
to usual c arguments. */
#ifdef __mips64
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
/* The flag _dl_mips_gnu_objects is set if all dynamic objects are \
generated by the gnu linker. */\
int _dl_mips_gnu_objects = 1;\
\
/* This is called from assembly stubs below which the compiler can't see. */ \
static ElfW(Addr) __dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr)) \
static ElfW(Addr) \
__dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr)) \
__attribute__ ((unused)); \
\
static ElfW(Addr) \
__dl_runtime_resolve (ElfW(Word) sym_index,\
ElfW(Word) return_address,\
ElfW(Addr) old_gpreg)\
ElfW(Addr) old_gpreg,\
ElfW(Addr) stub_pc)\
{\
struct link_map *l = elf_machine_runtime_link_map (old_gpreg);\
struct link_map *l = elf_machine_runtime_link_map (old_gpreg, stub_pc);\
const ElfW(Sym) *const symtab\
= (const ElfW(Sym) *) (l->l_addr + l->l_info[DT_SYMTAB]->d_un.d_ptr);\
const char *strtab\
@ -286,7 +332,100 @@ __dl_runtime_resolve (ElfW(Word) sym_index,\
definer = &symtab[sym_index];\
\
loadbase = _dl_lookup_symbol (strtab + definer->st_name, &definer,\
scope, l->l_name, 0, 1);\
scope, l->l_name, DL_LOOKUP_NOPLT);\
\
*_dl_global_scope_end = NULL;\
\
/* Apply the relocation with that value. */\
funcaddr = loadbase + definer->st_value;\
*(got + local_gotno + sym_index - gotsym) = funcaddr;\
\
return funcaddr;\
}\
\
asm ("\n\
.text\n\
.align 3\n\
.globl _dl_runtime_resolve\n\
.type _dl_runtime_resolve,@function\n\
.ent _dl_runtime_resolve\n\
_dl_runtime_resolve:\n\
.set noreorder\n\
# Save old GP to $3.\n\
move $3,$28\n\
# Modify t9 ($25) so as to point .cpload instruction.\n\
daddu $25,2*8\n\
# Compute GP.\n\
.cpload $25\n\
.set reorder\n\
# Save slot call pc.\n\
move $2, $31\n\
# Save arguments and sp value in stack.\n\
dsubu $29, 10*8\n\
.cprestore 8*8\n\
sd $15, 9*8($29)\n\
sd $4, 3*8($29)\n\
sd $5, 4*8($29)\n\
sd $6, 5*8($29)\n\
sd $7, 6*8($29)\n\
sd $16, 7*8($29)\n\
move $16, $29\n\
move $4, $24\n\
move $5, $15\n\
move $6, $3\n\
move $7, $2\n\
jal __dl_runtime_resolve\n\
move $29, $16\n\
ld $31, 9*8($29)\n\
ld $4, 3*8($29)\n\
ld $5, 4*8($29)\n\
ld $6, 5*8($29)\n\
ld $7, 6*8($29)\n\
ld $16, 7*8($29)\n\
daddu $29, 10*8\n\
move $25, $2\n\
jr $25\n\
.end _dl_runtime_resolve\n\
");
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
/* The flag _dl_mips_gnu_objects is set if all dynamic objects are \
generated by the gnu linker. */\
int _dl_mips_gnu_objects = 1;\
\
/* This is called from assembly stubs below which the compiler can't see. */ \
static ElfW(Addr) \
__dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr)) \
__attribute__ ((unused)); \
\
static ElfW(Addr) \
__dl_runtime_resolve (ElfW(Word) sym_index,\
ElfW(Word) return_address,\
ElfW(Addr) old_gpreg,\
ElfW(Addr) stub_pc)\
{\
struct link_map *l = elf_machine_runtime_link_map (old_gpreg, stub_pc);\
const ElfW(Sym) *const symtab\
= (const ElfW(Sym) *) (l->l_addr + l->l_info[DT_SYMTAB]->d_un.d_ptr);\
const char *strtab\
= (void *) (l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr);\
const ElfW(Addr) *got\
= (const ElfW(Addr) *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr);\
const ElfW(Word) local_gotno\
= (const ElfW(Word)) l->l_info[DT_MIPS (LOCAL_GOTNO)]->d_un.d_val;\
const ElfW(Word) gotsym\
= (const ElfW(Word)) l->l_info[DT_MIPS (GOTSYM)]->d_un.d_val;\
const ElfW(Sym) *definer;\
ElfW(Addr) loadbase;\
ElfW(Addr) funcaddr;\
struct link_map **scope;\
\
/* Look up the symbol's run-time value. */\
scope = _dl_object_relocation_scope (l);\
definer = &symtab[sym_index];\
\
loadbase = _dl_lookup_symbol (strtab + definer->st_name, &definer,\
scope, l->l_name, DL_LOOKUP_NOPLT);\
\
*_dl_global_scope_end = NULL;\
\
@ -312,6 +451,8 @@ _dl_runtime_resolve:\n\
# Compute GP.\n\
.cpload $25\n\
.set reorder\n\
# Save slot call pc.\n\
move $2, $31\n\
# Save arguments and sp value in stack.\n\
subu $29, 40\n\
.cprestore 32\n\
@ -325,6 +466,7 @@ _dl_runtime_resolve:\n\
move $4, $24\n\
move $5, $15\n\
move $6, $3\n\
move $7, $2\n\
jal __dl_runtime_resolve\n\
move $29, $16\n\
lw $31, 36($29)\n\
@ -338,15 +480,91 @@ _dl_runtime_resolve:\n\
jr $25\n\
.end _dl_runtime_resolve\n\
");
#endif
/* Mask identifying addresses reserved for the user program,
where the dynamic linker should not map anything. */
#define ELF_MACHINE_USER_ADDRESS_MASK 0x00000000UL
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
#ifdef __mips64
#define RTLD_START asm ("\
.text\n\
.align 3\n\
.globl _start\n\
.globl _dl_start_user\n\
.ent _start\n\
_start:\n\
.set noreorder\n\
bltzal $0, 0f\n\
nop\n\
0: .cpload $31\n\
.set reorder\n\
# i386 ABI book says that the first entry of GOT holds\n\
# the address of the dynamic structure. Though MIPS ABI\n\
# doesn't say nothing about this, I emulate this here.\n\
dla $4, _DYNAMIC\n\
sd $4, -0x7ff0($28)\n\
move $4, $29\n\
jal _dl_start\n\
# Get the value of label '_dl_start_user' in t9 ($25).\n\
dla $25, _dl_start_user\n\
_dl_start_user:\n\
.set noreorder\n\
.cpload $25\n\
.set reorder\n\
move $16, $28\n\
# Save the user entry point address in saved register.\n\
move $17, $2\n\
# See if we were run as a command with the executable file\n\
# name as an extra leading argument.\n\
ld $2, _dl_skip_args\n\
beq $2, $0, 1f\n\
# Load the original argument count.\n\
ld $4, 0($29)\n\
# Subtract _dl_skip_args from it.\n\
dsubu $4, $2\n\
# Adjust the stack pointer to skip _dl_skip_args words.\n\
dsll $2,2\n\
daddu $29, $2\n\
# Save back the modified argument count.\n\
sd $4, 0($29)\n\
# Get _dl_default_scope[2] as argument in _dl_init_next call below.\n\
1: dla $2, _dl_default_scope\n\
ld $4, 2*8($2)\n\
# Call _dl_init_next to return the address of an initializer\n\
# function to run.\n\
jal _dl_init_next\n\
move $28, $16\n\
# Check for zero return, when out of initializers.\n\
beq $2, $0, 2f\n\
# Call the shared object initializer function.\n\
move $25, $2\n\
ld $4, 0($29)\n\
ld $5, 1*8($29)\n\
ld $6, 2*8($29)\n\
ld $7, 3*8($29)\n\
jalr $25\n\
move $28, $16\n\
# Loop to call _dl_init_next for the next initializer.\n\
b 1b\n\
# Pass our finalizer function to the user in ra.\n\
2: dla $31, _dl_fini\n\
# Jump to the user entry point.\n\
move $25, $17\n\
ld $4, 0($29)\n\
ld $5, 1*8($29)\n\
ld $6, 2*8$29)\n\
ld $7, 3*8($29)\n\
jr $25\n\
.end _start\n\
");
#else
#define RTLD_START asm ("\
.text\n\
.globl _start\n\
@ -417,6 +635,12 @@ _dl_start_user:\n\
jr $25\n\
.end _start\n\
");
#endif
/* The MIPS never uses Elfxx_Rela relocations. */
#define ELF_MACHINE_NO_RELA 1
#endif /* !dl_machine_h */
#ifdef RESOLVE
@ -428,34 +652,37 @@ elf_machine_rel (struct link_map *map, const ElfW(Rel) *reloc,
const ElfW(Sym) *sym, const struct r_found_version *version)
{
ElfW(Addr) *const reloc_addr = (void *) (map->l_addr + reloc->r_offset);
ElfW(Addr) loadbase, undo;
ElfW(Addr) loadbase;
ElfW(Addr) undo __attribute__ ((unused));
switch (ELFW(R_TYPE) (reloc->r_info))
{
case R_MIPS_REL32:
if (ELFW(ST_BIND) (sym->st_info) == STB_LOCAL
&& (ELFW(ST_TYPE) (sym->st_info) == STT_SECTION
|| ELFW(ST_TYPE) (sym->st_info) == STT_NOTYPE))
*reloc_addr += map->l_addr;
else
{
{
ElfW(Addr) undo = 0;
if (ELFW(ST_BIND) (sym->st_info) == STB_LOCAL
&& (ELFW(ST_TYPE) (sym->st_info) == STT_SECTION
|| ELFW(ST_TYPE) (sym->st_info) == STT_NOTYPE))
{
*reloc_addr += map->l_addr;
break;
}
#ifndef RTLD_BOOTSTRAP
/* This is defined in rtld.c, but nowhere in the static libc.a;
make the reference weak so static programs can still link. This
declaration cannot be done when compiling rtld.c (i.e. #ifdef
RTLD_BOOTSTRAP) because rtld.c contains the common defn for
_dl_rtld_map, which is incompatible with a weak decl in the same
file. */
weak_extern (_dl_rtld_map);
if (map == &_dl_rtld_map)
/* Undo the relocation done here during bootstrapping. Now we will
relocate it anew, possibly using a binding found in the user
program or a loaded library rather than the dynamic linker's
built-in definitions used while loading those libraries. */
undo = map->l_addr + sym->st_value;
else
/* This is defined in rtld.c, but nowhere in the static libc.a;
make the reference weak so static programs can still link. This
declaration cannot be done when compiling rtld.c (i.e. #ifdef
RTLD_BOOTSTRAP) because rtld.c contains the common defn for
_dl_rtld_map, which is incompatible with a weak decl in the same
file. */
weak_extern (_dl_rtld_map);
if (map == &_dl_rtld_map)
/* Undo the relocation done here during bootstrapping. Now we will
relocate it anew, possibly using a binding found in the user
program or a loaded library rather than the dynamic linker's
built-in definitions used while loading those libraries. */
undo = map->l_addr + sym->st_value;
#endif
undo = 0;
loadbase = RESOLVE (&sym, version, 0);
*reloc_addr += (sym ? (loadbase + sym->st_value) : 0) - undo;
}

47
sysdeps/mips/setjmp.S
View File

@ -1,32 +1,35 @@
/* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
/* The function __sigsetjmp_aux saves all the registers, but it can't
reliably access the stack or frame pointers, so we pass them in as
extra arguments. */
ENTRY (__sigsetjmp)
move a2, sp
#ifdef __sgi__
move a3, fp
#else
move a3, $fp
#ifdef PIC
.option pic2
#endif
j __sigsetjmp_aux
.end __sigsetjmp
ENTRY (__sigsetjmp)
#ifdef PIC
.cpload t9
#endif
move a2, sp
move a3, fp
la t9, __sigsetjmp_aux
nop
jr t9

27
sysdeps/mips/setjmp_aux.c
View File

@ -1,20 +1,21 @@
/* Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Brendan Kehoe (brendan@zen.org).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <setjmp.h>