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* sysdeps/sparc/sparc32/dl-trampoline.S: New file.

Browse Source 
* sysdeps/sparc/sparc32/dl-machine.h: Move PLT trampolines there.
	Use RESOLVE_MAP instead of RESOLVE to protect relocation code.
	(elf_machine_runtime_setup): Test for dl_profile non-null.
	* sysdeps/sparc/sparc64/dl-trampoline.S: New file.
	(ARCH_LA_PLTENTER, ARCH_LA_PLTEXIT): New.
	* sysdeps/sparc/sparc64/dl-machine.h: Move PLT trampolines there.
	Use RESOLVE_MAP instead of RESOLVE to protect relocation code.
	(elf_machine_runtime_setup): Test for dl_profile non-null.
	* sysdeps/sparc/bits/link.h: New file.
	* sysdeps/generic/ldsodefs.h (La_sparc32_regs, La_sparc32_retval,
	La_sparc64_regs, La_sparc64_retval): New.
	(struct audit_ifaces): Add sparc entries.
	* elf/tst-auditmod1.c: Add sparc entries.
This commit is contained in:
Roland McGrath 2005-04-05 21:37:05 +00:00
parent 328a48c579
commit 404a4e2fb3
8 changed files with 788 additions and 302 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
ChangeLog
View File

@ -1,3 +1,20 @@
2005-04-04 David S. Miller <davem@davemloft.net>
* sysdeps/sparc/sparc32/dl-trampoline.S: New file.
* sysdeps/sparc/sparc32/dl-machine.h: Move PLT trampolines there.
Use RESOLVE_MAP instead of RESOLVE to protect relocation code.
(elf_machine_runtime_setup): Test for dl_profile non-null.
* sysdeps/sparc/sparc64/dl-trampoline.S: New file.
(ARCH_LA_PLTENTER, ARCH_LA_PLTEXIT): New.
* sysdeps/sparc/sparc64/dl-machine.h: Move PLT trampolines there.
Use RESOLVE_MAP instead of RESOLVE to protect relocation code.
(elf_machine_runtime_setup): Test for dl_profile non-null.
* sysdeps/sparc/bits/link.h: New file.
* sysdeps/generic/ldsodefs.h (La_sparc32_regs, La_sparc32_retval,
La_sparc64_regs, La_sparc64_retval): New.
(struct audit_ifaces): Add sparc entries.
* elf/tst-auditmod1.c: Add sparc entries.
2005-03-27 Bruno Haible <bruno@clisp.org>
* intl/tst-gettext3.c: New file.

12
elf/tst-auditmod1.c
View File

@ -180,6 +180,18 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
# define La_regs La_mips_64_regs
# define La_retval La_mips_64_retval
# define int_retval lrv_v0
#elif defined __sparc__ && __WORDSIZE == 32
# define pltenter la_sparc32_gnu_pltenter
# define pltexit la_sparc32_gnu_pltexit
# define La_regs La_sparc32_regs
# define La_retval La_sparc32_retval
# define int_retval lrv_reg[0]
#elif defined __sparc__ && __WORDSIZE == 64
# define pltenter la_sparc64_gnu_pltenter
# define pltexit la_sparc64_gnu_pltexit
# define La_regs La_sparc64_regs
# define La_retval La_sparc64_retval
# define int_retval lrv_reg[0]
#else
# error "architecture specific code needed"
#endif

32
sysdeps/generic/ldsodefs.h
View File

@ -199,6 +199,10 @@ struct La_mips_32_regs;
struct La_mips_32_retval;
struct La_mips_64_regs;
struct La_mips_64_retval;
struct La_sparc32_regs;
struct La_sparc32_retval;
struct La_sparc64_regs;
struct La_sparc64_retval;
struct audit_ifaces
{
@ -270,6 +274,16 @@ struct audit_ifaces
const struct La_mips_64_regs *,
unsigned int *, const char *name,
long int *framesizep);
Elf32_Addr (*sparc32_gnu_pltenter) (Elf32_Sym *, unsigned int,
uintptr_t *, uintptr_t *,
const struct La_sparc32_regs *,
unsigned int *, const char *name,
long int *framesizep);
Elf64_Addr (*sparc64_gnu_pltenter) (Elf64_Sym *, unsigned int,
uintptr_t *, uintptr_t *,
const struct La_sparc64_regs *,
unsigned int *, const char *name,
long int *framesizep);
};
union
{
@ -328,6 +342,16 @@ struct audit_ifaces
const struct La_mips_64_regs *,
struct La_mips_64_retval *,
const char *);
unsigned int (*sparc32_gnu_pltexit) (Elf32_Sym *, unsigned int,
uintptr_t *, uintptr_t *,
const struct La_sparc32_regs *,
struct La_sparc32_retval *,
const char *);
unsigned int (*sparc64_gnu_pltexit) (Elf64_Sym *, unsigned int,
uintptr_t *, uintptr_t *,
const struct La_sparc32_regs *,
struct La_sparc32_retval *,
const char *);
};
unsigned int (*objclose) (uintptr_t *);
@ -587,10 +611,10 @@ struct rtld_global_ro
EXTERN int _dl_correct_cache_id;
/* Mask for hardware capabilities that are available. */
EXTERN unsigned long int _dl_hwcap;
EXTERN uint64_t _dl_hwcap;
/* Mask for important hardware capabilities we honour. */
EXTERN unsigned long int _dl_hwcap_mask;
EXTERN uint64_t _dl_hwcap_mask;
/* Get architecture specific definitions. */
#define PROCINFO_DECL
@ -636,6 +660,10 @@ struct rtld_global_ro
/* The vsyscall page is a virtual DSO pre-mapped by the kernel.
This points to its ELF header. */
EXTERN const ElfW(Ehdr) *_dl_sysinfo_dso;
/* At startup time we set up the normal DSO data structure for it,
and this points to it. */
EXTERN struct link_map *_dl_sysinfo_map;
#endif
#ifdef SHARED

100
sysdeps/sparc/bits/link.h Normal file
View File

@ -0,0 +1,100 @@
/* Machine-specific audit interfaces for dynamic linker. SPARC version.
Copyright (C) 2005 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _LINK_H
# error "Never include <bits/link.h> directly; use <link.h> instead."
#endif
#if __WORDSIZE == 32
typedef struct La_sparc32_regs
{
uint32_t lr_lreg[8]; /* %l0 through %l7 */
uint32_t lr_reg[6]; /* %o0 through %o5 */
uint32_t lr_sp; /* %o6 */
uint32_t lr_ra; /* %o7 */
uint32_t lr_struct; /* Pass-by-reference struct pointer */
} La_sparc32_regs;
typedef struct La_sparc32_retval
{
uint32_t lrv_reg[2]; /* %o0 and %o1 */
double lrv_fpreg[2]; /* %f0 and %f2 */
} La_sparc32_retval;
#else
typedef struct La_sparc64_regs
{
uint64_t lr_lreg[8]; /* %l0 through %l7 */
uint64_t lr_reg[6]; /* %o0 through %o5 */
uint64_t lr_sp; /* %o6 */
uint64_t lr_ra; /* %o7 */
double lr_fpreg[16]; /* %f0 through %f30 */
} La_sparc64_regs;
typedef struct La_sparc64_retval
{
uint64_t lrv_reg[4]; /* %o0 through %o3 */
double lrv_fprev[4]; /* %f0 through %f8 */
} La_sparc64_retval;
#endif
__BEGIN_DECLS
#if __WORDSIZE == 32
extern Elf32_Addr la_sparc32_gnu_pltenter (Elf32_Sym *__sym,
unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
La_sparc32_regs *__regs,
unsigned int *__flags,
const char *__symname,
long int *__framesizep);
extern unsigned int la_sparc32_gnu_pltexit (Elf32_Sym *__sym,
unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
const La_sparc32_regs *__inregs,
La_sparc32_retval *__outregs,
const char *symname);
#else
extern Elf64_Addr la_sparc64_gnu_pltenter (Elf64_Sym *__sym,
unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
La_sparc64_regs *__regs,
unsigned int *__flags,
const char *__symname,
long int *__framesizep);
extern unsigned int la_sparc64_gnu_pltexit (Elf64_Sym *__sym,
unsigned int __ndx,
uintptr_t *__refcook,
uintptr_t *__defcook,
const La_sparc64_regs *__inregs,
La_sparc64_retval *__outregs,
const char *symname);
#endif
__END_DECLS

327
sysdeps/sparc/sparc32/dl-machine.h
View File

@ -131,30 +131,31 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
bits of %g1 with an offset into the .rela.plt section and jump to
the beginning of the PLT. */
plt = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
if (! profile)
rfunc = (Elf32_Addr) &_dl_runtime_resolve;
else
if (__builtin_expect(profile, 0))
{
rfunc = (Elf32_Addr) &_dl_runtime_profile;
if (_dl_name_match_p (GLRO(dl_profile), l))
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
GL(dl_profile_map) = l;
}
else
{
rfunc = (Elf32_Addr) &_dl_runtime_resolve;
}
/* The beginning of the PLT does:
save %sp, -64, %sp
pltpc: call _dl_runtime_resolve
nop
sethi %hi(_dl_runtime_{resolve,profile}), %g2
pltpc: jmpl %g2 + %lo(_dl_runtime_{resolve,profile}), %g2
nop
.word MAP
This saves the register window containing the arguments, and the
PC value (pltpc) implicitly saved in %o7 by the call points near the
The PC value (pltpc) saved in %g2 by the jmpl points near the
location where we store the link_map pointer for this object. */
plt[0] = OPCODE_SAVE_SP;
/* Construct PC-relative word address. */
plt[1] = OPCODE_CALL | ((rfunc - (Elf32_Addr) &plt[1]) >> 2);
plt[0] = 0x05000000 | ((rfunc >> 10) & 0x003fffff);
plt[1] = 0x85c0a000 | (rfunc & 0x3ff);
plt[2] = OPCODE_NOP; /* Fill call delay slot. */
plt[3] = (Elf32_Addr) l;
if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
@ -190,39 +191,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
return lazy;
}
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
asm ( "\
.text\n\
.globl " #tramp_name "\n\
.type " #tramp_name ", @function\n\
.align 32\n\
" #tramp_name ":\n\
/* Set up the arguments to fixup --\n\
%o0 = link_map out of plt0\n\
%o1 = offset of reloc entry\n\
%o2 = return address */\n\
ld [%o7 + 8], %o0\n\
srl %g1, 10, %o1\n\
mov %i7, %o2\n\
call " #fixup_name "\n\
sub %o1, 4*12, %o1\n\
jmp %o0\n\
restore\n\
.size " #tramp_name ", . - " #tramp_name "\n\
.previous")
#ifndef PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
TRAMPOLINE_TEMPLATE (_dl_runtime_profile, fixup);
#endif
/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
PLT entries should not be allowed to define the value.
ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
@ -406,7 +374,10 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
#endif /* dl_machine_h */
#ifdef RESOLVE
#define ARCH_LA_PLTENTER sparc32_gnu_pltenter
#define ARCH_LA_PLTEXIT sparc32_gnu_pltexit
#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@ -418,7 +389,10 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
void *const reloc_addr_arg)
{
Elf32_Addr *const reloc_addr = reloc_addr_arg;
const Elf32_Sym *const refsym = sym;
Elf32_Addr value;
const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
struct link_map *sym_map = NULL;
#if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
/* This is defined in rtld.c, but nowhere in the static libc.a; make the
@ -429,6 +403,9 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
weak_extern (_dl_rtld_map);
#endif
if (__builtin_expect (r_type == R_SPARC_NONE, 0))
return;
#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
if (__builtin_expect (r_type == R_SPARC_RELATIVE, 0))
{
@ -436,161 +413,143 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
if (map != &_dl_rtld_map) /* Already done in rtld itself. */
# endif
*reloc_addr += map->l_addr + reloc->r_addend;
return;
}
#endif
#ifndef RESOLVE_CONFLICT_FIND_MAP
if (__builtin_expect (ELF32_ST_BIND (sym->st_info) == STB_LOCAL, 0)
&& sym->st_shndx != SHN_UNDEF)
{
value = map->l_addr;
}
else
{
sym_map = RESOLVE_MAP (&sym, version, r_type);
value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
}
#else
value = 0;
#endif
value += reloc->r_addend; /* Assume copy relocs have zero addend. */
switch (r_type)
{
#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
const Elf32_Sym *const refsym = sym;
# ifdef USE_TLS
struct link_map *sym_map;
# endif
#endif
Elf32_Addr value;
#ifndef RESOLVE_CONFLICT_FIND_MAP
if (sym->st_shndx != SHN_UNDEF &&
ELF32_ST_BIND (sym->st_info) == STB_LOCAL)
case R_SPARC_COPY:
if (sym == NULL)
/* This can happen in trace mode if an object could not be
found. */
break;
if (sym->st_size > refsym->st_size
|| (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
{
value = map->l_addr;
# if defined USE_TLS && !defined RTLD_BOOTSTRAP
sym_map = map;
# endif
}
else
{
# if defined USE_TLS && !defined RTLD_BOOTSTRAP
sym_map = RESOLVE_MAP (&sym, version, r_type);
value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
# else
value = RESOLVE (&sym, version, r_type);
if (sym)
value += sym->st_value;
# endif
}
#else
value = 0;
#endif
value += reloc->r_addend; /* Assume copy relocs have zero addend. */
const char *strtab;
switch (r_type)
{
#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
case R_SPARC_COPY:
if (sym == NULL)
/* This can happen in trace mode if an object could not be
found. */
break;
if (sym->st_size > refsym->st_size
|| (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
{
const char *strtab;
strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
rtld_progname ?: "<program name unknown>",
strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
break;
rtld_progname ?: "<program name unknown>",
strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
break;
#endif
case R_SPARC_GLOB_DAT:
case R_SPARC_32:
*reloc_addr = value;
break;
case R_SPARC_JMP_SLOT:
/* At this point we don't need to bother with thread safety,
so we can optimize the first instruction of .plt out. */
sparc_fixup_plt (reloc, reloc_addr, value, 0);
break;
case R_SPARC_GLOB_DAT:
case R_SPARC_32:
*reloc_addr = value;
break;
case R_SPARC_JMP_SLOT:
/* At this point we don't need to bother with thread safety,
so we can optimize the first instruction of .plt out. */
sparc_fixup_plt (reloc, reloc_addr, value, 0);
break;
#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD) \
&& !defined RESOLVE_CONFLICT_FIND_MAP
case R_SPARC_TLS_DTPMOD32:
/* Get the information from the link map returned by the
resolv function. */
if (sym_map != NULL)
*reloc_addr = sym_map->l_tls_modid;
break;
case R_SPARC_TLS_DTPOFF32:
/* During relocation all TLS symbols are defined and used.
Therefore the offset is already correct. */
*reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
break;
case R_SPARC_TLS_TPOFF32:
/* The offset is negative, forward from the thread pointer. */
/* We know the offset of object the symbol is contained in.
It is a negative value which will be added to the
thread pointer. */
if (sym != NULL)
{
CHECK_STATIC_TLS (map, sym_map);
*reloc_addr = sym->st_value - sym_map->l_tls_offset
+ reloc->r_addend;
}
break;
case R_SPARC_TLS_DTPMOD32:
/* Get the information from the link map returned by the
resolv function. */
if (sym_map != NULL)
*reloc_addr = sym_map->l_tls_modid;
break;
case R_SPARC_TLS_DTPOFF32:
/* During relocation all TLS symbols are defined and used.
Therefore the offset is already correct. */
*reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
break;
case R_SPARC_TLS_TPOFF32:
/* The offset is negative, forward from the thread pointer. */
/* We know the offset of object the symbol is contained in.
It is a negative value which will be added to the
thread pointer. */
if (sym != NULL)
{
CHECK_STATIC_TLS (map, sym_map);
*reloc_addr = sym->st_value - sym_map->l_tls_offset
+ reloc->r_addend;
}
break;
# ifndef RTLD_BOOTSTRAP
case R_SPARC_TLS_LE_HIX22:
case R_SPARC_TLS_LE_LOX10:
if (sym != NULL)
{
CHECK_STATIC_TLS (map, sym_map);
value = sym->st_value - sym_map->l_tls_offset
+ reloc->r_addend;
if (r_type == R_SPARC_TLS_LE_HIX22)
*reloc_addr = (*reloc_addr & 0xffc00000) | ((~value) >> 10);
else
*reloc_addr = (*reloc_addr & 0xffffe000) | (value & 0x3ff)
| 0x1c00;
}
break;
case R_SPARC_TLS_LE_HIX22:
case R_SPARC_TLS_LE_LOX10:
if (sym != NULL)
{
CHECK_STATIC_TLS (map, sym_map);
value = sym->st_value - sym_map->l_tls_offset
+ reloc->r_addend;
if (r_type == R_SPARC_TLS_LE_HIX22)
*reloc_addr = (*reloc_addr & 0xffc00000) | ((~value) >> 10);
else
*reloc_addr = (*reloc_addr & 0xffffe000) | (value & 0x3ff)
| 0x1c00;
}
break;
# endif
#endif
#ifndef RTLD_BOOTSTRAP
case R_SPARC_8:
*(char *) reloc_addr = value;
break;
case R_SPARC_16:
*(short *) reloc_addr = value;
break;
case R_SPARC_DISP8:
*(char *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_DISP16:
*(short *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_DISP32:
*reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_LO10:
*reloc_addr = (*reloc_addr & ~0x3ff) | (value & 0x3ff);
break;
case R_SPARC_WDISP30:
*reloc_addr = ((*reloc_addr & 0xc0000000)
| ((value - (unsigned int) reloc_addr) >> 2));
break;
case R_SPARC_HI22:
*reloc_addr = (*reloc_addr & 0xffc00000) | (value >> 10);
break;
case R_SPARC_UA16:
((unsigned char *) reloc_addr_arg) [0] = value >> 8;
((unsigned char *) reloc_addr_arg) [1] = value;
break;
case R_SPARC_UA32:
((unsigned char *) reloc_addr_arg) [0] = value >> 24;
((unsigned char *) reloc_addr_arg) [1] = value >> 16;
((unsigned char *) reloc_addr_arg) [2] = value >> 8;
((unsigned char *) reloc_addr_arg) [3] = value;
break;
case R_SPARC_8:
*(char *) reloc_addr = value;
break;
case R_SPARC_16:
*(short *) reloc_addr = value;
break;
case R_SPARC_DISP8:
*(char *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_DISP16:
*(short *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_DISP32:
*reloc_addr = (value - (Elf32_Addr) reloc_addr);
break;
case R_SPARC_LO10:
*reloc_addr = (*reloc_addr & ~0x3ff) | (value & 0x3ff);
break;
case R_SPARC_WDISP30:
*reloc_addr = ((*reloc_addr & 0xc0000000)
| ((value - (unsigned int) reloc_addr) >> 2));
break;
case R_SPARC_HI22:
*reloc_addr = (*reloc_addr & 0xffc00000) | (value >> 10);
break;
case R_SPARC_UA16:
((unsigned char *) reloc_addr_arg) [0] = value >> 8;
((unsigned char *) reloc_addr_arg) [1] = value;
break;
case R_SPARC_UA32:
((unsigned char *) reloc_addr_arg) [0] = value >> 24;
((unsigned char *) reloc_addr_arg) [1] = value >> 16;
((unsigned char *) reloc_addr_arg) [2] = value >> 8;
((unsigned char *) reloc_addr_arg) [3] = value;
break;
#endif
case R_SPARC_NONE: /* Alright, Wilbur. */
break;
#if !defined RTLD_BOOTSTRAP || defined _NDEBUG
default:
_dl_reloc_bad_type (map, r_type, 0);
break;
default:
_dl_reloc_bad_type (map, r_type, 0);
break;
#endif
}
}
}
@ -620,4 +579,4 @@ elf_machine_lazy_rel (struct link_map *map,
}
}
#endif /* RESOLVE */
#endif /* RESOLVE_MAP */

155
sysdeps/sparc/sparc32/dl-trampoline.S Normal file
View File

@ -0,0 +1,155 @@
/* PLT trampolines. Sparc 32-bit version.
Copyright (C) 2005 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
.text
.align 32
/* %g1: PLT offset loaded by PLT entry
* %g2: callers PC, which is PLT0 + 4, and we store the
* link map at PLT0 + 12, therefore we add 8 to get
* the address of the link map
*/
.globl _dl_runtime_resolve
.type _dl_runtime_resolve, @function
_dl_runtime_resolve:
save %sp, -104, %sp
ld [%g2 + 8], %o0
srl %g1, 10, %o1
call _dl_fixup
sub %o1, 4*12, %o1
jmp %o0
restore
.size _dl_runtime_resolve, .-_dl_runtime_resolve
/* For the profiling cases we pass in our stack frame
* as the base of the La_sparc64_regs, so it looks
* like:
* %l0 %sp
* ...
* %l7 %sp + (7 * 8)
* %i0 %sp + (8 * 8)
* ...
* %i7 %sp + (15 * 8)
* %f0 %sp + (16 * 8)
* %f16 %sp + (31 * 8)
* framesize %sp + (32 * 8)
*/
.globl _dl_profile_save_regs
.type _dl_profile_save_regs, @function
_dl_profile_save_regs:
std %l0, [%sp + ( 0 * 8)]
std %l2, [%sp + ( 1 * 8)]
std %l4, [%sp + ( 2 * 8)]
std %l6, [%sp + ( 3 * 8)]
std %i0, [%sp + ( 4 * 8)]
std %i2, [%sp + ( 5 * 8)]
std %i4, [%sp + ( 6 * 8)]
std %i6, [%sp + ( 7 * 8)]
ld [%sp + (8 * 8)], %l4
retl
st %l4, [%sp + (8 * 8)]
.size _dl_profile_save_regs, .-_dl_profile_save_regs
/* If we are going to call pltexit, then we must replicate
* the caller's stack frame.
* %o0: PLT resolved function address
*/
.globl _dl_profile_invoke
.type _dl_profile_invoke, @function
_dl_profile_invoke:
sub %sp, %l0, %sp
1:
srl %l0, 3, %l7
mov %o0, %l1
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
mov %i3, %o3
mov %i4, %o4
mov %i5, %o5
mov %fp, %l2
mov %sp, %l3
1: ldd [%l2], %g2
add %l2, 0x8, %l2
subcc %l7, 1, %l7
stx %g2, [%l3]
bne 1b
add %l3, 0x8, %l3
jmpl %l1, %o7
nop
std %o0, [%sp + ( 9 * 8)]
std %f0, [%sp + (10 * 8)]
mov %l5, %o0
mov %l6, %o1
add %sp, %l0, %o2
call _dl_call_pltexit
add %sp, (16 * 8), %o3
ldd [%sp + (9 * 8)], %i0
jmpl %i7 + 8, %g0
restore
/* %g1: PLT offset loaded by PLT entry
* %g2: callers PC, which is PLT0 + 4, and we store the
* link map at PLT0 + 12, therefore we add 8 to get
* the address of the link map
*/
.align 32
.globl _dl_runtime_profile
.type _dl_runtime_profile, @function
_dl_runtime_profile:
cmp %fp, 0
be,a 1f
mov 104, %g3
sub %fp, %sp, %g3
1: save %sp, -104, %sp
ld [%g2 + 8], %o0
srl %g1, 10, %o1
mov %i7, %o2
sub %o1, 4*12, %o1
mov %g3, %l0
mov %o0, %l5
mov %o1, %l6
call _dl_profile_save_regs
nop
mov %sp, %o3
call _dl_profile_fixup
add %sp, (9 * 8), %o4
ld [%sp + (9 * 8)], %o1
cmp %o1, 0
bgeu 1f
nop
call _dl_profile_invoke
nop
1: jmp %o0
restore
.size _dl_runtime_profile, .-_dl_runtime_profile

167
sysdeps/sparc/sparc64/dl-machine.h
View File

@ -233,7 +233,10 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
return value;
}
#ifdef RESOLVE
#define ARCH_LA_PLTENTER sparc64_gnu_pltenter
#define ARCH_LA_PLTEXIT sparc64_gnu_pltexit
#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@ -267,9 +270,10 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
value = map->l_addr;
else
{
value = RESOLVE (&sym, version, r_type);
if (sym)
value += sym->st_value;
struct link_map *sym_map;
sym_map = RESOLVE_MAP (&sym, version, r_type);
value = (sym_map == NULL) ? 0 : (sym_map->l_addr + sym->st_value);
}
#else
value = 0;
@ -490,74 +494,67 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
extern void _dl_runtime_profile_1 (void);
Elf64_Addr res0_addr, res1_addr;
unsigned int *plt = (void *) D_PTR (l, l_info[DT_PLTGOT]);
int i = 0;
if (! profile)
if (__builtin_expect(profile, 0))
{
res0_addr = (Elf64_Addr) &_dl_runtime_profile_0;
res1_addr = (Elf64_Addr) &_dl_runtime_profile_1;
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
GL(dl_profile_map) = l;
}
else
{
res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0;
res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1;
}
else
{
res0_addr = (Elf64_Addr) &_dl_runtime_profile_0;
res1_addr = (Elf64_Addr) &_dl_runtime_profile_1;
if (_dl_name_match_p (GLRO(dl_profile), l))
GL(dl_profile_map) = l;
}
/* PLT0 looks like:
save %sp, -192, %sp
sethi %hh(_dl_runtime_{resolve,profile}_0), %l0
sethi %lm(_dl_runtime_{resolve,profile}_0), %l1
or %l0, %hm(_dl_runtime_{resolve,profile}_0), %l0
or %l1, %lo(_dl_runtime_{resolve,profile}_0), %l1
sllx %l0, 32, %l0
jmpl %l0 + %l1, %l6
sethi %hi(0xffc00), %l2
sethi %uhi(_dl_runtime_{resolve,profile}_0), %g4
sethi %hi(_dl_runtime_{resolve,profile}_0), %g5
or %g4, %ulo(_dl_runtime_{resolve,profile}_0), %g4
or %g5, %lo(_dl_runtime_{resolve,profile}_0), %g5
sllx %g4, 32, %g4
add %g4, %g5, %g5
jmpl %g5, %g4
nop
*/
plt[0] = 0x9de3bf40;
plt[1] = 0x21000000 | (res0_addr >> (64 - 22));
plt[2] = 0x23000000 | ((res0_addr >> 10) & 0x003fffff);
plt[3] = 0xa0142000 | ((res0_addr >> 32) & 0x3ff);
plt[4] = 0xa2146000 | (res0_addr & 0x3ff);
plt[5] = 0xa12c3020;
plt[6] = 0xadc40011;
plt[7] = 0x250003ff;
plt[0] = 0x09000000 | (res0_addr >> (64 - 22));
plt[1] = 0x0b000000 | ((res0_addr >> 10) & 0x003fffff);
plt[2] = 0x88112000 | ((res0_addr >> 32) & 0x3ff);
plt[3] = 0x8a116000 | (res0_addr & 0x3ff);
plt[4] = 0x89293020;
plt[5] = 0x8a010005;
plt[6] = 0x89c14000;
plt[7] = 0x01000000;
/* PLT1 looks like:
save %sp, -192, %sp
sethi %hh(_dl_runtime_{resolve,profile}_1), %l0
sethi %lm(_dl_runtime_{resolve,profile}_1), %l1
or %l0, %hm(_dl_runtime_{resolve,profile}_1), %l0
or %l1, %lo(_dl_runtime_{resolve,profile}_1), %l1
sllx %l0, 32, %l0
jmpl %l0 + %l1, %l6
srlx %g1, 12, %o1
sethi %uhi(_dl_runtime_{resolve,profile}_1), %g4
sethi %hi(_dl_runtime_{resolve,profile}_1), %g5
or %g4, %ulo(_dl_runtime_{resolve,profile}_1), %g4
or %g5, %lo(_dl_runtime_{resolve,profile}_1), %g5
sllx %g4, 32, %g4
add %g4, %g5, %g5
jmpl %g5, %g4
nop
*/
plt[8 + 0] = 0x9de3bf40;
if (__builtin_expect (((res1_addr + 4) >> 32) & 0x3ff, 0))
i = 1;
else
res1_addr += 4;
plt[8 + 1] = 0x21000000 | (res1_addr >> (64 - 22));
plt[8 + 2] = 0x23000000 | ((res1_addr >> 10) & 0x003fffff);
if (__builtin_expect (i, 0))
plt[8 + 3] = 0xa0142000 | ((res1_addr >> 32) & 0x3ff);
else
plt[8 + 3] = 0xa12c3020;
plt[8 + 4] = 0xa2146000 | (res1_addr & 0x3ff);
if (__builtin_expect (i, 0))
plt[8 + 5] = 0xa12c3020;
plt[8 + 5 + i] = 0xadc40011;
plt[8 + 6 + i] = 0x9330700c;
plt[8] = 0x09000000 | (res1_addr >> (64 - 22));
plt[9] = 0x0b000000 | ((res1_addr >> 10) & 0x003fffff);
plt[10] = 0x88112000 | ((res1_addr >> 32) & 0x3ff);
plt[11] = 0x8a116000 | (res1_addr & 0x3ff);
plt[12] = 0x89293020;
plt[13] = 0x8a010005;
plt[14] = 0x89c14000;
plt[15] = 0x01000000;
/* Now put the magic cookie at the beginning of .PLT2
Entry .PLT3 is unused by this implementation. */
*((struct link_map **)(&plt[16 + 0])) = l;
*((struct link_map **)(&plt[16])) = l;
if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
|| __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
@ -604,68 +601,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
return lazy;
}
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
asm ("\n" \
" .text\n" \
" .globl " #tramp_name "_0\n" \
" .type " #tramp_name "_0, @function\n" \
" .align 32\n" \
"\t" #tramp_name "_0:\n" \
" ! sethi %hi(1047552), %l2 - Done in .PLT0\n" \
" ldx [%l6 + 32 + 8], %o0\n" \
" sub %g1, %l6, %l0\n" \
" xor %l2, -1016, %l2\n" \
" sethi %hi(5120), %l3 ! 160 * 32\n" \
" add %l0, %l2, %l0\n" \
" sethi %hi(32768), %l4\n" \
" udivx %l0, %l3, %l3\n" \
" sllx %l3, 2, %l1\n" \
" add %l1, %l3, %l1\n" \
" sllx %l1, 10, %l2\n" \
" sub %l4, 4, %l4 ! No thanks to Sun for not obeying their own ABI\n" \
" sllx %l1, 5, %l1\n" \
" sub %l0, %l2, %l0\n" \
" udivx %l0, 24, %l0\n" \
" add %l0, %l4, %l0\n" \
" add %l1, %l0, %l1\n" \
" add %l1, %l1, %l0\n" \
" add %l0, %l1, %l0\n" \
" mov %i7, %o2\n" \
" call " #fixup_name "\n" \
" sllx %l0, 3, %o1\n" \
" jmp %o0\n" \
" restore\n" \
" .size " #tramp_name "_0, . - " #tramp_name "_0\n" \
"\n" \
" .globl " #tramp_name "_1\n" \
" .type " #tramp_name "_1, @function\n" \
" ! tramp_name_1 + 4 needs to be .align 32\n" \
"\t" #tramp_name "_1:\n" \
" sub %l6, 4, %l6\n" \
" ! srlx %g1, 12, %o1 - Done in .PLT1\n" \
" ldx [%l6 + 12], %o0\n" \
" add %o1, %o1, %o3\n" \
" sub %o1, 96, %o1 ! No thanks to Sun for not obeying their own ABI\n" \
" mov %i7, %o2\n" \
" call " #fixup_name "\n" \
" add %o1, %o3, %o1\n" \
" jmp %o0\n" \
" restore\n" \
" .size " #tramp_name "_1, . - " #tramp_name "_1\n" \
" .previous\n");
#ifndef PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
TRAMPOLINE_TEMPLATE (_dl_runtime_profile, fixup);
#endif
/* The PLT uses Elf64_Rela relocs. */
#define elf_machine_relplt elf_machine_rela

280
sysdeps/sparc/sparc64/dl-trampoline.S Normal file
View File

@ -0,0 +1,280 @@
/* PLT trampolines. Sparc 64-bit version.
Copyright (C) 2005 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
.text
.align 32
/* %g1: PLT offset loaded by PLT entry
* %g4: callers PC, which is PLT0 + 24, therefore we
* add (32 + 8) to get the address of PLT2 which
* is where the magic cookie is stored
*/
.globl _dl_runtime_resolve_0
.type _dl_runtime_resolve_0, @function
_dl_runtime_resolve_0:
save %sp, -192, %sp
sethi %hi(1047552), %l2
ldx [%g4 + 32 + 8], %o0
sub %g1, %g4, %l0
xor %l2, -1016, %l2
sethi %hi(5120), %l3 /* 160 * 32 */
add %l0, %l2, %l0
sethi %hi(32768), %l4
udivx %l0, %l3, %l3
sllx %l3, 2, %l1
add %l1, %l3, %l1
sllx %l1, 10, %l2
sub %l4, 4, %l4
sllx %l1, 5, %l1
sub %l0, %l2, %l0
udivx %l0, 24, %l0
add %l0, %l4, %l0
add %l1, %l0, %l1
add %l1, %l1, %l0
add %l0, %l1, %l0
call _dl_fixup
sllx %l0, 3, %o1
jmp %o0
restore
.size _dl_runtime_resolve_0, .-_dl_runtime_resolve_0
/* %g1: PLT offset loaded by PLT entry
* %g4: callers PC, which is PLT1 + 24, therefore we
* add 8 to get the address of PLT2 which
* is where the magic cookie is stored
*/
.globl _dl_runtime_resolve_1
.type _dl_runtime_resolve_1, @function
_dl_runtime_resolve_1:
save %sp, -192, %sp
srlx %g1, 12, %o1
ldx [%g4 + 8], %o0
add %o1, %o1, %o3
sub %o1, 96, %o1
call _dl_fixup
add %o1, %o3, %o1
jmp %o0
restore
.size _dl_runtime_resolve_1, .-_dl_runtime_resolve_1
/* For the profiling cases we pass in our stack frame
* as the base of the La_sparc64_regs, so it looks
* like:
* %l0 %sp
* ...
* %l7 %sp + (7 * 8)
* %i0 %sp + (8 * 8)
* ...
* %i7 %sp + (15 * 8)
* %f0 %sp + (16 * 8)
* %f16 %sp + (31 * 8)
* framesize %sp + (32 * 8)
*/
.globl _dl_profile_save_regs
.type _dl_profile_save_regs, @function
_dl_profile_save_regs:
stx %l0, [%sp + STACK_BIAS + ( 0 * 8)]
stx %l1, [%sp + STACK_BIAS + ( 1 * 8)]
stx %l2, [%sp + STACK_BIAS + ( 2 * 8)]
stx %l3, [%sp + STACK_BIAS + ( 3 * 8)]
stx %l4, [%sp + STACK_BIAS + ( 4 * 8)]
stx %l5, [%sp + STACK_BIAS + ( 5 * 8)]
stx %l6, [%sp + STACK_BIAS + ( 6 * 8)]
stx %l7, [%sp + STACK_BIAS + ( 7 * 8)]
stx %i0, [%sp + STACK_BIAS + ( 8 * 8)]
stx %i1, [%sp + STACK_BIAS + ( 9 * 8)]
stx %i2, [%sp + STACK_BIAS + (10 * 8)]
stx %i3, [%sp + STACK_BIAS + (11 * 8)]
stx %i4, [%sp + STACK_BIAS + (12 * 8)]
stx %i5, [%sp + STACK_BIAS + (13 * 8)]
stx %i6, [%sp + STACK_BIAS + (14 * 8)]
stx %i7, [%sp + STACK_BIAS + (15 * 8)]
std %f0, [%sp + STACK_BIAS + (16 * 8)]
std %f2, [%sp + STACK_BIAS + (17 * 8)]
std %f4, [%sp + STACK_BIAS + (18 * 8)]
std %f6, [%sp + STACK_BIAS + (19 * 8)]
std %f8, [%sp + STACK_BIAS + (20 * 8)]
std %f10, [%sp + STACK_BIAS + (21 * 8)]
std %f12, [%sp + STACK_BIAS + (22 * 8)]
std %f14, [%sp + STACK_BIAS + (23 * 8)]
std %f16, [%sp + STACK_BIAS + (24 * 8)]
std %f18, [%sp + STACK_BIAS + (25 * 8)]
std %f20, [%sp + STACK_BIAS + (26 * 8)]
std %f22, [%sp + STACK_BIAS + (27 * 8)]
std %f24, [%sp + STACK_BIAS + (28 * 8)]
std %f26, [%sp + STACK_BIAS + (29 * 8)]
std %f28, [%sp + STACK_BIAS + (30 * 8)]
retl
std %f30, [%sp + STACK_BIAS + (31 * 8)]
.size _dl_profile_save_regs, .-_dl_profile_save_regs
/* If we are going to call pltexit, then we must replicate
* the caller's stack frame.
* %o0: PLT resolved function address
*/
.globl _dl_profile_invoke
.type _dl_profile_invoke, @function
_dl_profile_invoke:
sub %sp, %l0, %sp
1:
srlx %l0, 3, %l7
mov %o0, %l1
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
mov %i3, %o3
mov %i4, %o4
mov %i5, %o5
add %fp, STACK_BIAS, %l2
add %sp, STACK_BIAS, %l3
1: ldx [%l2], %l4
add %l2, 0x8, %l2
subcc %l7, 1, %l7
stx %l4, [%l3]
bne,pt %xcc, 1b
add %l3, 0x8, %l3
jmpl %l1, %o7
nop
stx %o0, [%sp + STACK_BIAS + (16 * 8)]
stx %o1, [%sp + STACK_BIAS + (17 * 8)]
stx %o2, [%sp + STACK_BIAS + (18 * 8)]
stx %o3, [%sp + STACK_BIAS + (19 * 8)]
std %f0, [%sp + STACK_BIAS + (20 * 8)]
std %f2, [%sp + STACK_BIAS + (21 * 8)]
std %f4, [%sp + STACK_BIAS + (22 * 8)]
std %f8, [%sp + STACK_BIAS + (23 * 8)]
mov %l5, %o0
mov %l6, %o1
add %sp, %l0, %o2
add %sp, STACK_BIAS + (16 * 8), %o3
call _dl_call_pltexit
add %o2, STACK_BIAS, %o2
ldx [%sp + STACK_BIAS + (16 * 8)], %i0
ldx [%sp + STACK_BIAS + (17 * 8)], %i1
ldx [%sp + STACK_BIAS + (18 * 8)], %i2
ldx [%sp + STACK_BIAS + (19 * 8)], %i3
jmpl %i7 + 8, %g0
restore
/* %g1: PLT offset loaded by PLT entry
* %g4: callers PC, which is PLT0 + 24, therefore we
* add (32 + 8) to get the address of PLT2 which
* is where the magic cookie is stored
*/
.align 32
.globl _dl_runtime_profile_0
.type _dl_runtime_profile_0, @function
_dl_runtime_profile_0:
brz,a,pn %fp, 1f
mov 192, %g5
sub %fp, %sp, %g5
1: save %sp, -336, %sp
sethi %hi(1047552), %l2
ldx [%g4 + 32 + 8], %o0
sub %g1, %g4, %l0
xor %l2, -1016, %l2
sethi %hi(5120), %l3 /* 160 * 32 */
add %l0, %l2, %l0
sethi %hi(32768), %l4
udivx %l0, %l3, %l3
sllx %l3, 2, %l1
add %l1, %l3, %l1
sllx %l1, 10, %l2
sub %l4, 4, %l4
sllx %l1, 5, %l1
sub %l0, %l2, %l0
udivx %l0, 24, %l0
add %l0, %l4, %l0
add %l1, %l0, %l1
add %l1, %l1, %l0
add %l0, %l1, %l0
mov %i7, %o2
sllx %l0, 3, %o1
mov %g5, %l0
mov %o0, %l5
mov %o1, %l6
call _dl_profile_save_regs
nop
add %sp, STACK_BIAS, %o3
call _dl_profile_fixup
add %sp, (STACK_BIAS + (32 * 8)), %o4
ldx [%sp + STACK_BIAS + (32 * 8)], %o1
brgez,pt %o1, 1f
nop
call _dl_profile_invoke
nop
1: jmp %o0
restore
.size _dl_runtime_profile_0, .-_dl_runtime_profile_0
/* %g1: PLT offset loaded by PLT entry
* %g4: callers PC, which is PLT1 + 24, therefore we
* add 8 to get the address of PLT2 which
* is where the magic cookie is stored
*/
.globl _dl_runtime_profile_1
.type _dl_runtime_profile_1, @function
_dl_runtime_profile_1:
brz,a,pn %fp, 1f
mov 192, %g5
sub %fp, %sp, %g5
1: save %sp, -336, %sp
srlx %g1, 12, %o1
ldx [%g4 + 8], %o0
add %o1, %o1, %o3
sub %o1, 96, %o1
mov %i7, %o2
add %o1, %o3, %o1
mov %g5, %l0
mov %o0, %l5
mov %o1, %l6
call _dl_profile_save_regs
nop
add %sp, STACK_BIAS, %o3
call _dl_profile_fixup
add %sp, (STACK_BIAS + (32 * 8)), %o4
ldx [%sp + STACK_BIAS + (32 * 8)], %o1
brgez,pt %o1, 1f
nop
call _dl_profile_invoke
nop
1: jmp %o0
restore
.size _dl_runtime_resolve_1, .-_dl_runtime_resolve_1