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* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_runtime_setup): No

Browse Source 
need to check GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH on sparcv9. 
(sparc_fixup_plt): Add do_flush argument instead of figuring whether 
flush should be used or not inside of the function. 
(elf_machine_fixup_plt, elf_machine_rela): Adjust caller.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone,
	__thread_start): Use HIDDEN_JUMPTARGET.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone,
	__thread_start): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (JUMPTARGET): Define.
nptl/
	* sysdeps/unix/sysv/linux/lowlevellock.c: Comment fix.
	* sysdeps/unix/sysv/linux/sparc/sparc32/lowlevellock.c
	(__lll_timedwait_tid): Pass LLL_SHARED as 4th argument to
	lll_futex_timed_wait.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_runtime_setup): No
	need to check GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH on sparcv9.
	(sparc_fixup_plt): Add do_flush argument instead of figuring whether
	flush should be used or not inside of the function.
	(elf_machine_fixup_plt, elf_machine_rela): Adjust caller.

	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone,
	__thread_start): Use HIDDEN_JUMPTARGET.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone,
	__thread_start): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (JUMPTARGET): Define.
This commit is contained in:
Jakub Jelinek
2007-08-14 19:59:35 +00:00
parent 702a94146a
commit 467d1345e0
8 changed files with 69 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
ChangeLog
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@ -1,5 +1,17 @@
2007-08-14 Jakub Jelinek <jakub@redhat.com> 2007-08-14 Jakub Jelinek <jakub@redhat.com>
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_runtime_setup): No
need to check GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH on sparcv9.
(sparc_fixup_plt): Add do_flush argument instead of figuring whether
flush should be used or not inside of the function.
(elf_machine_fixup_plt, elf_machine_rela): Adjust caller.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone,
__thread_start): Use HIDDEN_JUMPTARGET.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone,
__thread_start): Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.h (JUMPTARGET): Define.
* sysdeps/ieee754/ldbl-64-128/strtold_l.c (__STRTOF): Declare. * sysdeps/ieee754/ldbl-64-128/strtold_l.c (__STRTOF): Declare.
Add libc_hidden_proto. Add libc_hidden_proto.
(STRTOF): Add libc_hidden_proto. (STRTOF): Add libc_hidden_proto.

5
nptl/ChangeLog
View File

@ -1,5 +1,10 @@
2007-08-14 Jakub Jelinek <jakub@redhat.com> 2007-08-14 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/lowlevellock.c: Comment fix.
* sysdeps/unix/sysv/linux/sparc/sparc32/lowlevellock.c
(__lll_timedwait_tid): Pass LLL_SHARED as 4th argument to
lll_futex_timed_wait.
* sysdeps/unix/sysv/linux/alpha/lowlevellock.h (__lll_unlock, * sysdeps/unix/sysv/linux/alpha/lowlevellock.h (__lll_unlock,
__lll_robust_unlock): Rewrite as macros instead of inline functions. __lll_robust_unlock): Rewrite as macros instead of inline functions.
* sysdeps/unix/sysv/linux/s390/lowlevellock.h (__lll_unlock, * sysdeps/unix/sysv/linux/s390/lowlevellock.h (__lll_unlock,

2
nptl/sysdeps/unix/sysv/linux/lowlevellock.c
View File

@ -37,7 +37,7 @@ __lll_lock_wait_private (int *futex)
} }
/* These functions doesn't get included in libc.so */ /* These functions don't get included in libc.so */
#ifdef IS_IN_libpthread #ifdef IS_IN_libpthread
void void
__lll_lock_wait (int *futex, int private) __lll_lock_wait (int *futex, int private)

9
nptl/sysdeps/unix/sysv/linux/sparc/sparc32/lowlevellock.c
View File

@ -36,9 +36,9 @@ __lll_lock_wait_private (int *futex)
while (atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0); while (atomic_compare_and_exchange_val_24_acq (futex, 2, 0) != 0);
} }
#ifdef IS_IN_libpthread
/* These functions don't get included in libc.so */
/* These functions don't get included in libc.so */
#ifdef IS_IN_libpthread
void void
__lll_lock_wait (int *futex, int private) __lll_lock_wait (int *futex, int private)
{ {
@ -121,8 +121,9 @@ __lll_timedwait_tid (int *tidp, const struct timespec *abstime)
if (rt.tv_sec < 0) if (rt.tv_sec < 0)
return ETIMEDOUT; return ETIMEDOUT;
/* Wait until thread terminates. */ /* Wait until thread terminates. The kernel so far does not use
if (lll_futex_timed_wait (tidp, tid, &rt) == -ETIMEDOUT) the private futex operations for this. */
if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT)
return ETIMEDOUT; return ETIMEDOUT;
} }

54
sysdeps/sparc/sparc32/dl-machine.h
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@ -1,5 +1,6 @@
/* Machine-dependent ELF dynamic relocation inline functions. SPARC version. /* Machine-dependent ELF dynamic relocation inline functions. SPARC version.
Copyright (C) 1996-2003, 2004, 2005, 2006 Free Software Foundation, Inc. Copyright (C) 1996-2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -155,12 +156,18 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
|| __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0)) || __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
{ {
/* Need to reinitialize .plt to undo prelinking. */ /* Need to reinitialize .plt to undo prelinking. */
int do_flush;
Elf32_Rela *rela = (Elf32_Rela *) D_PTR (l, l_info[DT_JMPREL]); Elf32_Rela *rela = (Elf32_Rela *) D_PTR (l, l_info[DT_JMPREL]);
Elf32_Rela *relaend Elf32_Rela *relaend
= (Elf32_Rela *) ((char *) rela = (Elf32_Rela *) ((char *) rela
+ l->l_info[DT_PLTRELSZ]->d_un.d_val); + l->l_info[DT_PLTRELSZ]->d_un.d_val);
do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH; #if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
/* Note that we don't mask the hwcap here, as the flush is
essential to functionality on those cpu's that implement it.
For sparcv9 we can assume flush is present. */
const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#else
const int do_flush = 1;
#endif
/* prelink must ensure there are no R_SPARC_NONE relocs left /* prelink must ensure there are no R_SPARC_NONE relocs left
in .rela.plt. */ in .rela.plt. */
@ -305,20 +312,11 @@ _dl_start_user:\n\
.size _dl_start_user, . - _dl_start_user\n\ .size _dl_start_user, . - _dl_start_user\n\
.previous"); .previous");
static inline Elf32_Addr static inline __attribute__ ((always_inline)) Elf32_Addr
sparc_fixup_plt (const Elf32_Rela *reloc, Elf32_Addr *reloc_addr, sparc_fixup_plt (const Elf32_Rela *reloc, Elf32_Addr *reloc_addr,
Elf32_Addr value, int t) Elf32_Addr value, int t, int do_flush)
{ {
Elf32_Sword disp = value - (Elf32_Addr) reloc_addr; Elf32_Sword disp = value - (Elf32_Addr) reloc_addr;
#ifndef RTLD_BOOTSTRAP
/* Note that we don't mask the hwcap here, as the flush is essential to
functionality on those cpu's that implement it. */
int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#else
/* Unfortunately, this is necessary, so that we can ensure
ld.so will not execute corrupt PLT entry instructions. */
const int do_flush = 1;
#endif
if (0 && disp >= -0x800000 && disp < 0x800000) if (0 && disp >= -0x800000 && disp < 0x800000)
{ {
@ -354,7 +352,15 @@ elf_machine_fixup_plt (struct link_map *map, lookup_t t,
const Elf32_Rela *reloc, const Elf32_Rela *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value) Elf32_Addr *reloc_addr, Elf32_Addr value)
{ {
return sparc_fixup_plt (reloc, reloc_addr, value, 1); #ifdef __sparc_v9__
/* Sparc v9 can assume flush is always present. */
const int do_flush = 1;
#else
/* Note that we don't mask the hwcap here, as the flush is essential to
functionality on those cpu's that implement it. */
const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#endif
return sparc_fixup_plt (reloc, reloc_addr, value, 1, do_flush);
} }
/* Return the final value of a plt relocation. */ /* Return the final value of a plt relocation. */
@ -455,9 +461,21 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
*reloc_addr = value; *reloc_addr = value;
break; break;
case R_SPARC_JMP_SLOT: 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. */ #if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
sparc_fixup_plt (reloc, reloc_addr, value, 0); /* Note that we don't mask the hwcap here, as the flush is
essential to functionality on those cpu's that implement
it. For sparcv9 we can assume flush is present. */
const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#else
/* Unfortunately, this is necessary, so that we can ensure
ld.so will not execute corrupt PLT entry instructions. */
const int do_flush = 1;
#endif
/* 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, do_flush);
}
break; break;
#if (!defined RTLD_BOOTSTRAP || USE___THREAD) \ #if (!defined RTLD_BOOTSTRAP || USE___THREAD) \
&& !defined RESOLVE_CONFLICT_FIND_MAP && !defined RESOLVE_CONFLICT_FIND_MAP

6
sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
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@ -1,4 +1,4 @@
/* Copyright (C) 1996, 1997, 1998, 2000, 2003, 2004 /* Copyright (C) 1996, 1997, 1998, 2000, 2003, 2004, 2007
Free Software Foundation, Inc. Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@tamu.edu). Contributed by Richard Henderson (rth@tamu.edu).
@ -71,7 +71,7 @@ ENTRY (__clone)
restore %o0,%g0,%o0 restore %o0,%g0,%o0
.Lerror: .Lerror:
call __errno_location call HIDDEN_JUMPTARGET(__errno_location)
or %g0,EINVAL,%i0 or %g0,EINVAL,%i0
st %i0,[%o0] st %i0,[%o0]
jmpl %i7 + 8, %g0 jmpl %i7 + 8, %g0
@ -99,7 +99,7 @@ __thread_start:
mov %g0, %fp /* terminate backtrace */ mov %g0, %fp /* terminate backtrace */
call %g2 call %g2
mov %g3,%o0 mov %g3,%o0
call _exit,0 call HIDDEN_JUMPTARGET(_exit),0
nop nop
cfi_endproc cfi_endproc

6
sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
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@ -1,4 +1,4 @@
/* Copyright (C) 1997, 2000 Free Software Foundation, Inc. /* Copyright (C) 1997, 2000, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@tamu.edu). Contributed by Richard Henderson (rth@tamu.edu).
@ -85,7 +85,7 @@ ENTRY (__clone)
st %i0, [%g2+%lo(errno)] st %i0, [%g2+%lo(errno)]
#endif #endif
#else #else
call __errno_location call HIDDEN_JUMPTARGET(__errno_location)
nop nop
st %i0, [%o0] st %i0, [%o0]
#endif #endif
@ -112,7 +112,7 @@ __thread_start:
mov %g0, %fp /* terminate backtrace */ mov %g0, %fp /* terminate backtrace */
call %g2 call %g2
mov %g3,%o0 mov %g3,%o0
call _exit,0 call HIDDEN_JUMPTARGET(_exit),0
nop nop
cfi_endproc cfi_endproc

5
sysdeps/unix/sysv/linux/sparc/sysdep.h
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@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc. /* Copyright (C) 2000, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2000. Contributed by Jakub Jelinek <jakub@redhat.com>, 2000.
@ -149,5 +149,8 @@
}) })
#ifdef __ASSEMBLER__
# define JUMPTARGET(sym) sym
#endif
#endif /* _LINUX_SPARC_SYSDEP_H */ #endif /* _LINUX_SPARC_SYSDEP_H */