223 lines
4.9 KiB
Diff
223 lines
4.9 KiB
Diff
--- nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S 2011-12-22 18:04:12.937212834 +0000
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+++ nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S 2011-12-22 18:04:42.104222278 +0000
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@@ -137,7 +137,6 @@ __pthread_cond_wait:
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cmpl $PI_BIT, %eax
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jne 18f
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-90:
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movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx
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movl %ebp, %edx
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xorl %esi, %esi
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@@ -151,9 +150,6 @@ __pthread_cond_wait:
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sete 16(%esp)
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je 19f
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- cmpl $-EAGAIN, %eax
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- je 91f
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-
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/* Normal and PI futexes dont mix. Use normal futex functions only
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if the kernel does not support the PI futex functions. */
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cmpl $-ENOSYS, %eax
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@@ -398,78 +394,6 @@ __pthread_cond_wait:
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#endif
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call __lll_unlock_wake
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jmp 11b
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-
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-91:
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-.LcleanupSTART2:
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- /* FUTEX_WAIT_REQUEUE_PI returned EAGAIN. We need to
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- call it again. */
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-
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- /* Get internal lock. */
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- movl $1, %edx
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- xorl %eax, %eax
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- LOCK
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-#if cond_lock == 0
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- cmpxchgl %edx, (%ebx)
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-#else
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- cmpxchgl %edx, cond_lock(%ebx)
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-#endif
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- jz 92f
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-
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-#if cond_lock == 0
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- movl %ebx, %edx
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-#else
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- leal cond_lock(%ebx), %edx
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-#endif
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-#if (LLL_SHARED-LLL_PRIVATE) > 255
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- xorl %ecx, %ecx
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-#endif
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- cmpl $-1, dep_mutex(%ebx)
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- setne %cl
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- subl $1, %ecx
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- andl $(LLL_SHARED-LLL_PRIVATE), %ecx
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-#if LLL_PRIVATE != 0
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- addl $LLL_PRIVATE, %ecx
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-#endif
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- call __lll_lock_wait
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-
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-92:
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- /* Increment the cond_futex value again, so it can be used as a new
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- expected value. */
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- addl $1, cond_futex(%ebx)
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- movl cond_futex(%ebx), %ebp
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-
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- /* Unlock. */
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- LOCK
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-#if cond_lock == 0
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- subl $1, (%ebx)
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-#else
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- subl $1, cond_lock(%ebx)
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-#endif
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- je 93f
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-#if cond_lock == 0
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- movl %ebx, %eax
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-#else
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- leal cond_lock(%ebx), %eax
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-#endif
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-#if (LLL_SHARED-LLL_PRIVATE) > 255
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- xorl %ecx, %ecx
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-#endif
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- cmpl $-1, dep_mutex(%ebx)
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- setne %cl
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- subl $1, %ecx
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- andl $(LLL_SHARED-LLL_PRIVATE), %ecx
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-#if LLL_PRIVATE != 0
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- addl $LLL_PRIVATE, %ecx
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-#endif
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- call __lll_unlock_wake
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-
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-93:
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- /* Set the rest of SYS_futex args for FUTEX_WAIT_REQUEUE_PI. */
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- xorl %ecx, %ecx
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- movl dep_mutex(%ebx), %edi
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- jmp 90b
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-.LcleanupEND2:
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-
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.size __pthread_cond_wait, .-__pthread_cond_wait
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versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
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GLIBC_2_3_2)
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@@ -642,10 +566,6 @@ __condvar_w_cleanup:
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.long .LcleanupEND-.Lsub_cond_futex
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.long __condvar_w_cleanup-.LSTARTCODE
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.uleb128 0
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- .long .LcleanupSTART2-.LSTARTCODE
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- .long .LcleanupEND2-.LcleanupSTART2
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- .long __condvar_w_cleanup-.LSTARTCODE
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- .uleb128 0
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.long .LcallUR-.LSTARTCODE
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.long .LENDCODE-.LcallUR
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.long 0
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--- nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S 2011-12-22 18:04:12.941212837 +0000
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+++ nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S 2011-12-22 18:05:05.155229737 +0000
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@@ -23,7 +23,6 @@
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#include <lowlevelcond.h>
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#include <tcb-offsets.h>
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#include <pthread-pi-defines.h>
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-#include <pthread-errnos.h>
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#include <stap-probe.h>
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#include <kernel-features.h>
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@@ -137,14 +136,11 @@ __pthread_cond_wait:
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cmpl $PI_BIT, %eax
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jne 61f
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-90:
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movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %esi
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movl $SYS_futex, %eax
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syscall
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movl $1, %r8d
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- cmpq $-EAGAIN, %rax
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- je 91f
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#ifdef __ASSUME_REQUEUE_PI
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jmp 62f
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#else
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@@ -331,70 +327,6 @@ __pthread_cond_wait:
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13: movq %r10, %rax
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jmp 14b
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-
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-91:
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-.LcleanupSTART2:
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- /* FUTEX_WAIT_REQUEUE_PI returned EAGAIN. We need to
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- call it again. */
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- movq 8(%rsp), %rdi
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-
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- /* Get internal lock. */
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- movl $1, %esi
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- xorl %eax, %eax
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- LOCK
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-#if cond_lock == 0
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- cmpxchgl %esi, (%rdi)
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-#else
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- cmpxchgl %esi, cond_lock(%rdi)
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-#endif
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- jz 92f
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-
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-#if cond_lock != 0
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- addq $cond_lock, %rdi
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-#endif
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- LP_OP(cmp) $-1, dep_mutex-cond_lock(%rdi)
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- movl $LLL_PRIVATE, %eax
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- movl $LLL_SHARED, %esi
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- cmovne %eax, %esi
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- callq __lll_lock_wait
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-#if cond_lock != 0
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- subq $cond_lock, %rdi
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-#endif
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-92:
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- /* Increment the cond_futex value again, so it can be used as a new
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- expected value. */
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- incl cond_futex(%rdi)
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- movl cond_futex(%rdi), %edx
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-
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- /* Release internal lock. */
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- LOCK
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-#if cond_lock == 0
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- decl (%rdi)
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-#else
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- decl cond_lock(%rdi)
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-#endif
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- jz 93f
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-
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-#if cond_lock != 0
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- addq $cond_lock, %rdi
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-#endif
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- LP_OP(cmp) $-1, dep_mutex-cond_lock(%rdi)
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- movl $LLL_PRIVATE, %eax
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- movl $LLL_SHARED, %esi
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- cmovne %eax, %esi
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- /* The call preserves %rdx. */
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- callq __lll_unlock_wake
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-#if cond_lock != 0
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- subq $cond_lock, %rdi
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-#endif
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-93:
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- /* Set the rest of SYS_futex args for FUTEX_WAIT_REQUEUE_PI. */
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- xorq %r10, %r10
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- mov dep_mutex(%rdi), %R8_LP
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- leaq cond_futex(%rdi), %rdi
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- jmp 90b
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-.LcleanupEND2:
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-
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.size __pthread_cond_wait, .-__pthread_cond_wait
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versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
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GLIBC_2_3_2)
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@@ -547,15 +479,11 @@ __condvar_cleanup1:
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.uleb128 .LcleanupSTART-.LSTARTCODE
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.uleb128 .LcleanupEND-.LcleanupSTART
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.uleb128 __condvar_cleanup1-.LSTARTCODE
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- .uleb128 0
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- .uleb128 .LcleanupSTART2-.LSTARTCODE
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- .uleb128 .LcleanupEND2-.LcleanupSTART2
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- .uleb128 __condvar_cleanup1-.LSTARTCODE
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- .uleb128 0
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+ .uleb128 0
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.uleb128 .LcallUR-.LSTARTCODE
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.uleb128 .LENDCODE-.LcallUR
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.uleb128 0
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- .uleb128 0
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+ .uleb128 0
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.Lcstend:
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