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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S228
1 files changed, 23 insertions, 205 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S
index 4068a1b6b8..8c5c2a6974 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S
@@ -20,7 +20,6 @@
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
-#include <structsem.h>
#ifndef UP
# define LOCK lock
@@ -29,7 +28,6 @@
#endif
#define SYS_futex 202
-#define FUTEX_WAIT 0
/* For the calculation see asm/vsyscall.h. */
#define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000
@@ -40,23 +38,15 @@
.globl sem_timedwait
.type sem_timedwait,@function
.align 16
+ cfi_startproc
sem_timedwait:
-.LSTARTCODE:
-#if VALUE == 0
movl (%rdi), %eax
-#else
- movl VALUE(%rdi), %eax
-#endif
2: testl %eax, %eax
je 1f
leaq -1(%rax), %rdx
LOCK
-#if VALUE == 0
cmpxchgl %edx, (%rdi)
-#else
- cmpxchgl %edx, VALUE(%rdi)
-#endif
jne 2b
xorl %eax, %eax
@@ -64,25 +54,25 @@ sem_timedwait:
/* Check whether the timeout value is valid. */
1: pushq %r12
-.Lpush_r12:
+ cfi_adjust_cfa_offset(8)
pushq %r13
-.Lpush_r13:
+ cfi_adjust_cfa_offset(8)
pushq %r14
-.Lpush_r14:
+ cfi_adjust_cfa_offset(8)
subq $24, %rsp
-.Lsubq:
+ cfi_adjust_cfa_offset(24)
movq %rdi, %r12
+ cfi_offset(12, -16) /* %r12 */
movq %rsi, %r13
+ cfi_offset(13, -24) /* %r13 */
/* Check for invalid nanosecond field. */
cmpq $1000000000, 8(%r13)
movl $EINVAL, %r14d
+ cfi_offset(14, -24) /* %r14 */
jae 6f
- LOCK
- addq $1, NWAITERS(%r12)
-
7: xorl %esi, %esi
movq %rsp, %rdi
movq $VSYSCALL_ADDR_vgettimeofday, %rax
@@ -106,22 +96,12 @@ sem_timedwait:
movq %rdi, (%rsp) /* Store relative timeout. */
movq %rsi, 8(%rsp)
-.LcleanupSTART:
call __pthread_enable_asynccancel
movl %eax, 16(%rsp)
movq %rsp, %r10
-#if VALUE == 0
movq %r12, %rdi
-#else
- leaq VALUE(%r12), %rdi
-#endif
-#if FUTEX_WAIT == 0
- movl PRIVATE(%rdi), %esi
-#else
- movl $FUTEX_WAIT, %esi
- orl PRIVATE(%rdi), %esi
-#endif
+ xorl %esi, %esi
movl $SYS_futex, %eax
xorl %edx, %edx
syscall
@@ -129,47 +109,39 @@ sem_timedwait:
movl 16(%rsp), %edi
call __pthread_disable_asynccancel
-.LcleanupEND:
testq %r14, %r14
je 9f
cmpq $-EWOULDBLOCK, %r14
jne 3f
-9:
-#if VALUE == 0
- movl (%r12), %eax
-#else
- movl VALUE(%r12), %eax
-#endif
+9: movl (%r12), %eax
8: testl %eax, %eax
je 7b
leaq -1(%rax), %rcx
LOCK
-#if VALUE == 0
cmpxchgl %ecx, (%r12)
-#else
- cmpxchgl %ecx, VALUE(%r12)
-#endif
jne 8b
xorl %eax, %eax
-
-10: LOCK
- subq $1, NWAITERS(%r12)
-
- addq $24, %rsp
-.Laddq:
+10: addq $24, %rsp
+ cfi_adjust_cfa_offset(-24)
popq %r14
-.Lpop_r14:
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(14)
popq %r13
-.Lpop_r13:
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(13)
popq %r12
-.Lpop_r12:
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(12)
retq
-.Lafter_retq:
+ cfi_adjust_cfa_offset(48)
+ cfi_offset(12, -16) /* %r12 */
+ cfi_offset(13, -24) /* %r13 */
+ cfi_offset(14, -32) /* %r14 */
3: negq %r14
6:
#if USE___THREAD
@@ -182,159 +154,5 @@ sem_timedwait:
orl $-1, %eax
jmp 10b
+ cfi_endproc
.size sem_timedwait,.-sem_timedwait
-
-
- .type sem_timedwait_cleanup,@function
-sem_timedwait_cleanup:
- LOCK
- subq $1, NWAITERS(%r12)
- movq %rax, %rdi
-.LcallUR:
- call _Unwind_Resume@PLT
- hlt
-.LENDCODE:
- .size sem_timedwait_cleanup,.-sem_timedwait_cleanup
-
-
- .section .gcc_except_table,"a",@progbits
-.LexceptSTART:
- .byte 0xff # @LPStart format (omit)
- .byte 0xff # @TType format (omit)
- .byte 0x01 # call-site format
- # DW_EH_PE_uleb128
- .uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
- .uleb128 .LcleanupSTART-.LSTARTCODE
- .uleb128 .LcleanupEND-.LcleanupSTART
- .uleb128 sem_timedwait_cleanup-.LSTARTCODE
- .uleb128 0
- .uleb128 .LcallUR-.LSTARTCODE
- .uleb128 .LENDCODE-.LcallUR
- .uleb128 0
- .uleb128 0
-.Lcstend:
-
-
- .section .eh_frame,"a",@progbits
-.LSTARTFRAME:
- .long .LENDCIE-.LSTARTCIE # Length of the CIE.
-.LSTARTCIE:
- .long 0 # CIE ID.
- .byte 1 # Version number.
-#ifdef SHARED
- .string "zPLR" # NUL-terminated augmentation
- # string.
-#else
- .string "zPL" # NUL-terminated augmentation
- # string.
-#endif
- .uleb128 1 # Code alignment factor.
- .sleb128 -8 # Data alignment factor.
- .byte 16 # Return address register
- # column.
-#ifdef SHARED
- .uleb128 7 # Augmentation value length.
- .byte 0x9b # Personality: DW_EH_PE_pcrel
- # + DW_EH_PE_sdata4
- # + DW_EH_PE_indirect
- .long DW.ref.__gcc_personality_v0-.
- .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel
- # + DW_EH_PE_sdata4.
- .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel
- # + DW_EH_PE_sdata4.
-#else
- .uleb128 10 # Augmentation value length.
- .byte 0x0 # Personality: absolute
- .quad __gcc_personality_v0
- .byte 0x0 # LSDA Encoding: absolute
-#endif
- .byte 0x0c # DW_CFA_def_cfa
- .uleb128 7
- .uleb128 8
- .byte 0x90 # DW_CFA_offset, column 0x10
- .uleb128 1
- .align 8
-.LENDCIE:
-
- .long .LENDFDE-.LSTARTFDE # Length of the FDE.
-.LSTARTFDE:
- .long .LSTARTFDE-.LSTARTFRAME # CIE pointer.
-#ifdef SHARED
- .long .LSTARTCODE-. # PC-relative start address
- # of the code.
- .long .LENDCODE-.LSTARTCODE # Length of the code.
- .uleb128 4 # Augmentation size
- .long .LexceptSTART-.
-#else
- .quad .LSTARTCODE # Start address of the code.
- .quad .LENDCODE-.LSTARTCODE # Length of the code.
- .uleb128 8 # Augmentation size
- .quad .LexceptSTART
-#endif
-
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpush_r12-.LSTARTCODE
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 16
- .byte 0x8c # DW_CFA_offset %r12
- .uleb128 2
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpush_r13-.Lpush_r12
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 24
- .byte 0x8d # DW_CFA_offset %r13
- .uleb128 3
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpush_r14-.Lpush_r13
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 32
- .byte 0x8e # DW_CFA_offset %r14
- .uleb128 4
- .byte 4 # DW_CFA_advance_loc4
- .long .Lsubq-.Lpush_r14
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 56
- .byte 4 # DW_CFA_advance_loc4
- .long .Laddq-.Lsubq
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 32
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpop_r14-.Laddq
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 24
- .byte 0xce # DW_CFA_restore %r14
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpop_r13-.Lpop_r14
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 16
- .byte 0xcd # DW_CFA_restore %r13
- .byte 4 # DW_CFA_advance_loc4
- .long .Lpop_r12-.Lpop_r13
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 8
- .byte 0xcc # DW_CFA_restore %r12
- .byte 4 # DW_CFA_advance_loc4
- .long .Lafter_retq-.Lpop_r12
- .byte 14 # DW_CFA_def_cfa_offset
- .uleb128 56
- .byte 0x8c # DW_CFA_offset %r12
- .uleb128 2
- .byte 0x8d # DW_CFA_offset %r13
- .uleb128 3
- .byte 0x8e # DW_CFA_offset %r14
- .uleb128 4
- .align 8
-.LENDFDE:
-
-
-#ifdef SHARED
- .hidden DW.ref.__gcc_personality_v0
- .weak DW.ref.__gcc_personality_v0
- .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
- .align 8
- .type DW.ref.__gcc_personality_v0, @object
- .size DW.ref.__gcc_personality_v0, 8
-DW.ref.__gcc_personality_v0:
- .quad __gcc_personality_v0
-#endif
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