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(__lll_private_flag): Define. (lll_futex_timed_wait, lll_futex_wake): Use it. (lll_private_futex_wait, lll_private_futex_timed_wait, lll_private_futex_wake): Removed.

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This commit is contained in:
Jakub Jelinek 2007-07-29 10:08:46 +00:00
parent 5b74caf652
commit 1168be45be
1 changed files with 31 additions and 74 deletions
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105
nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
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@ -50,6 +50,33 @@
#define LLL_SHARED FUTEX_PRIVATE_FLAG
#if !defined NOT_IN_libc || defined IS_IN_rtld
/* In libc.so or ld.so all futexes are private. */
# ifdef __ASSUME_PRIVATE_FUTEX
# define __lll_private_flag(fl, private) \
((fl) | FUTEX_PRIVATE_FLAG)
# else
# define __lll_private_flag(fl, private) \
((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
# endif
#else
# ifdef __ASSUME_PRIVATE_FUTEX
# define __lll_private_flag(fl, private) \
(((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
# else
# define __lll_private_flag(fl, private) \
(__builtin_constant_p (private) \
? ((private) == 0 \
? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \
: (fl)) \
: ({ unsigned int __fl = ((private) ^ FUTEX_PRIVATE_FLAG); \
asm ("andl %%fs:%P1, %0" : "+r" (__fl) \
: "i" (offsetof (struct pthread, header.private_futex))); \
__fl | (fl); }))
# endif
#endif
/* Initializer for compatibility lock. */
#define LLL_MUTEX_LOCK_INITIALIZER (0)
#define LLL_MUTEX_LOCK_INITIALIZER_LOCKED (1)
@ -167,8 +194,8 @@ LLL_STUB_UNWIND_INFO_END
LLL_EBX_LOAD \
: "=a" (__status) \
: "0" (SYS_futex), LLL_EBX_REG (futex), "S" (timeout), \
"c" (FUTEX_WAIT), "d" (_val), \
"i" (offsetof (tcbhead_t, sysinfo)) \
"c" (__lll_private_flag (FUTEX_WAIT, private)), \
"d" (_val), "i" (offsetof (tcbhead_t, sysinfo)) \
: "memory"); \
__status; \
})
@ -183,83 +210,13 @@ LLL_STUB_UNWIND_INFO_END
LLL_EBX_LOAD \
: "=a" (__ignore) \
: "0" (SYS_futex), LLL_EBX_REG (futex), \
"c" (FUTEX_WAKE), "d" (_nr), \
"c" (__lll_private_flag (FUTEX_WAKE, private)), \
"d" (_nr), \
"i" (0) /* phony, to align next arg's number */, \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
#define lll_private_futex_wait(futex, val) \
lll_private_futex_timed_wait (futex, val, NULL)
#ifdef __ASSUME_PRIVATE_FUTEX
# define lll_private_futex_timed_wait(futex, val, timeout) \
({ \
int __status; \
register __typeof (val) _val asm ("edx") = (val); \
__asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
: "=a" (__status) \
: "0" (SYS_futex), LLL_EBX_REG (futex), "S" (timeout), \
"c" (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)), "d" (_val), \
"i" (offsetof (tcbhead_t, sysinfo)) \
: "memory"); \
__status; \
})
# define lll_private_futex_wake(futex, nr) \
do { \
int __ignore; \
register __typeof (nr) _nr asm ("edx") = (nr); \
__asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
: "=a" (__ignore) \
: "0" (SYS_futex), LLL_EBX_REG (futex), \
"c" (FUTEX_WAKE | FUTEX_PRIVATE_FLAG), "d" (_nr), \
"i" (0) /* phony, to align next arg's number */, \
"i" (offsetof (tcbhead_t, sysinfo))); \
} while (0)
#else
# define lll_private_futex_timed_wait(futex, val, timeout) \
({ \
int __status; \
int __ignore; \
register __typeof (val) _val asm ("edx") = (val); \
__asm __volatile ("movl %%gs:%P7, %%ecx\n\t" \
LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
: "=a" (__status), "=c" (__ignore) \
: LLL_EBX_REG (futex), "0" (SYS_futex), "S" (timeout), \
"d" (_val), "i" (offsetof (tcbhead_t, sysinfo)), \
"i" (PRIVATE_FUTEX) \
: "memory"); \
__status; \
})
# define lll_private_futex_wake(futex, nr) \
do { \
int __ignore; \
int __ignore2; \
register __typeof (nr) _nr asm ("edx") = (nr); \
__asm __volatile ("orl %%gs:%P7, %%ecx\n\t" \
LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
: "=a" (__ignore), "=c" (__ignore2) \
: LLL_EBX_REG (futex), "0" (SYS_futex), \
"1" (FUTEX_WAKE), "d" (_nr), \
"i" (offsetof (tcbhead_t, sysinfo)), \
"i" (PRIVATE_FUTEX)); \
} while (0)
#endif
/* Does not preserve %eax and %ecx. */
extern int __lll_mutex_lock_wait (int val, int *__futex)
__attribute ((regparm (2))) attribute_hidden;