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* sysdeps/unix/sysv/linux/i386/pthread_once.S: Use ENTER_KERNEL instead
	of int $0x80.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelcond.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Likewise.

	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Add support for using
	sysenter.
	* sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Likewise.

	* sysdeps/i386/tls.h: Unconditionally include <dl-sysdep.h>.
This commit is contained in:
Ulrich Drepper
2002-12-20 07:12:24 +00:00
parent 5f5843e30d
commit 097eca29e8
17 changed files with 100 additions and 52 deletions
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21
nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
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@ -257,6 +257,17 @@ extern int __libc_locking_needed attribute_hidden;
# define LLL_TID_EBX_LOAD
# define LLL_TID_EBX_REG "b"
#endif
#ifdef I386_USE_SYSENTER
# ifdef SHARED
# define LLL_TID_ENTER_KERNEL "call *%%gs:%P6\n\t"
# else
# define LLL_TID_ENTER_KERNEL "call *_dl_sysinfo\n\t"
# endif
#else
# define LLL_TID_ENTER_KERNEL "int $0x80\n\t"
#endif
#define lll_wait_tid(tid) \
do { \
int __ignore; \
@ -264,13 +275,14 @@ extern int __libc_locking_needed attribute_hidden;
if (_tid != 0) \
__asm __volatile (LLL_TID_EBX_LOAD \
"1:\tmovl %1, %%eax\n\t" \
"int $0x80\n\t" \
LLL_TID_ENTER_KERNEL \
"cmpl $0, (%%ebx)\n\t" \
"jne,pn 1b\n\t" \
LLL_TID_EBX_LOAD \
: "=&a" (__ignore) \
: "i" (SYS_futex), LLL_TID_EBX_REG (&tid), "S" (0), \
"c" (FUTEX_WAIT), "d" (_tid)); \
"c" (FUTEX_WAIT), "d" (_tid), \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
@ -293,11 +305,12 @@ extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
int __ignore; \
(tid) = 0; \
__asm __volatile (LLL_TID_EBX_LOAD \
"\tint $0x80\n\t" \
LLL_TID_ENTER_KERNEL \
LLL_TID_EBX_LOAD \
: "=a" (__ignore) \
: "0" (SYS_futex), LLL_TID_EBX_REG (&(tid)), "S" (0), \
"c" (FUTEX_WAKE), "d" (0x7fffffff)); \
"c" (FUTEX_WAKE), "d" (0x7fffffff) \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)