diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S | 156 |
1 files changed, 131 insertions, 25 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S index 68741bffe8..5b301979b5 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -22,6 +22,7 @@ #include <lowlevellock.h> #include <lowlevelcond.h> #include <tcb-offsets.h> +#include <kernel-features.h> .text @@ -100,7 +101,20 @@ __pthread_cond_wait: 4: call __pthread_enable_asynccancel movl %eax, (%esp) - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif +#if FUTEX_WAIT != 0 + addl $FUTEX_WAIT, %ecx +#endif movl %edi, %edx addl $cond_futex, %ebx .Ladd_cond_futex: @@ -161,7 +175,18 @@ __pthread_cond_wait: addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -197,8 +222,16 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %edx #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_lock_wait jmp 2b @@ -210,8 +243,16 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %eax #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_unlock_wake jmp 4b @@ -222,8 +263,16 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %edx #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_lock_wait jmp 6b @@ -234,8 +283,16 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %eax #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_unlock_wake jmp 11b @@ -256,8 +313,16 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %eax #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_unlock_wake movl %esi, %eax @@ -292,8 +357,16 @@ __condvar_w_cleanup: #else leal cond_lock(%ebx), %edx #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_lock_wait 1: movl broadcast_seq(%ebx), %eax @@ -332,7 +405,18 @@ __condvar_w_cleanup: addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -351,15 +435,34 @@ __condvar_w_cleanup: #else leal cond_lock(%ebx), %eax #endif - /* XYZ */ - movl $LLL_SHARED, %ecx +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif call __lll_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ 2: testl %edi, %edi jnz 5f addl $cond_futex, %ebx - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax movl $0x7fffffff, %edx ENTER_KERNEL @@ -473,12 +576,12 @@ __condvar_w_cleanup: .uleb128 16 .byte 0x83 # DW_CFA_offset %ebx .uleb128 4 - .byte 2 # DW_CFA_advance_loc1 - .byte .Lsubl-.Lpush_ebx + .byte 4 # DW_CFA_advance_loc4 + .4byte .Lsubl-.Lpush_ebx .byte 14 # DW_CFA_def_cfa_offset .uleb128 16+FRAME_SIZE - .byte 2 # DW_CFA_advance_loc1 - .byte .Laddl-.Lsubl + .byte 4 # DW_CFA_advance_loc4 + .4byte .Laddl-.Lsubl .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 .byte 0x40+ .Lpop_ebx-.Laddl # DW_CFA_advance_loc+N @@ -502,13 +605,16 @@ __condvar_w_cleanup: .uleb128 3 .byte 0x83 # DW_CFA_offset %ebx .uleb128 4 - .byte 0x40+.LSbl2-.LSbl1 # DW_CFA_advance_loc+N + .byte 4 # DW_CFA_advance_loc4 + .4byte .LSbl2-.LSbl1 .byte 14 # DW_CFA_def_cfa_offset .uleb128 16+FRAME_SIZE - .byte 0x40+.LSbl3-.LSbl2 # DW_CFA_advance_loc+N + .byte 4 # DW_CFA_advance_loc4 + .4byte .LSbl3-.LSbl2 .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 - .byte 0x40+.LSbl4-.LSbl3 # DW_CFA_advance_loc+N + .byte 4 # DW_CFA_advance_loc4 + .4byte .LSbl4-.LSbl3 .byte 14 # DW_CFA_def_cfa_offset .uleb128 16+FRAME_SIZE .align 4 |