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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S241
1 files changed, 192 insertions, 49 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
index bf70e17fca..57b5b58186 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
+#include <structsem.h>
#ifndef UP
# define LOCK lock
@@ -29,7 +30,12 @@
#define SYS_gettimeofday __NR_gettimeofday
#define SYS_futex 240
-#define FUTEX_WAKE 1
+#define FUTEX_WAIT 0
+
+
+#if VALUE != 0
+# error "code needs to be rewritten for VALUE != 0"
+#endif
.text
@@ -37,14 +43,8 @@
.globl sem_timedwait
.type sem_timedwait,@function
.align 16
- cfi_startproc
sem_timedwait:
- /* First check for cancellation. */
- movl %gs:CANCELHANDLING, %eax
- andl $0xfffffff9, %eax
- cmpl $8, %eax
- je 10f
-
+.LSTARTCODE:
movl 4(%esp), %ecx
movl (%ecx), %eax
@@ -61,24 +61,24 @@ sem_timedwait:
/* Check whether the timeout value is valid. */
1: pushl %esi
- cfi_adjust_cfa_offset(4)
+.Lpush_esi:
pushl %edi
- cfi_adjust_cfa_offset(4)
+.Lpush_edi:
pushl %ebx
- cfi_adjust_cfa_offset(4)
+.Lpush_ebx:
subl $12, %esp
- cfi_adjust_cfa_offset(12)
+.Lsub_esp:
movl 32(%esp), %edi
- cfi_offset(7, -12) /* %edi */
/* Check for invalid nanosecond field. */
cmpl $1000000000, 4(%edi)
movl $EINVAL, %esi
- cfi_offset(6, -8) /* %esi */
jae 6f
- cfi_offset(3, -16) /* %ebx */
+ LOCK
+ incl NWAITERS(%ecx)
+
7: xorl %ecx, %ecx
movl %esp, %ebx
movl %ecx, %edx
@@ -103,19 +103,26 @@ sem_timedwait:
movl %ecx, (%esp) /* Store relative timeout. */
movl %edx, 4(%esp)
+.LcleanupSTART:
call __pthread_enable_asynccancel
movl %eax, 8(%esp)
- movl 28(%esp), %ebx
- xorl %ecx, %ecx
+ movl 28(%esp), %ebx /* Load semaphore address. */
+#if FUTEX_WAIT == 0
+ movl PRIVATE(%ebx), %ecx
+#else
+ movl $FUTEX_WAIT, %ecx
+ orl PRIVATE(%ebx), %ecx
+#endif
movl %esp, %esi
- movl $SYS_futex, %eax
xorl %edx, %edx
+ movl $SYS_futex, %eax
ENTER_KERNEL
movl %eax, %esi
movl 8(%esp), %eax
call __pthread_disable_asynccancel
+.LcleanupEND:
testl %esi, %esi
je 9f
@@ -131,24 +138,22 @@ sem_timedwait:
cmpxchgl %ecx, (%ebx)
jne 8b
- addl $12, %esp
- cfi_adjust_cfa_offset(-12)
xorl %eax, %eax
+
+10: LOCK
+ decl NWAITERS(%ebx)
+
+ addl $12, %esp
+.Ladd_esp:
popl %ebx
- cfi_adjust_cfa_offset(-4)
- cfi_restore(3)
+.Lpop_ebx:
popl %edi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(7)
+.Lpop_edi:
popl %esi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(6)
+.Lpop_esi:
ret
- cfi_adjust_cfa_offset(24)
- cfi_offset(6, -8) /* %esi */
- cfi_offset(7, -12) /* %edi */
- cfi_offset(3, -16) /* %ebx */
+.Lafter_ret:
3: negl %esi
6:
#ifdef PIC
@@ -172,25 +177,163 @@ sem_timedwait:
movl %esi, (%eax)
#endif
- addl $12, %esp
- cfi_adjust_cfa_offset(-12)
+ movl 28(%esp), %ebx /* Load semaphore address. */
orl $-1, %eax
- popl %ebx
- cfi_adjust_cfa_offset(-4)
- cfi_restore(3)
- popl %edi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(7)
- popl %esi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(6)
- ret
+ jmp 10b
+ .size sem_timedwait,.-sem_timedwait
-10: /* Canceled. */
- movl $0xffffffff, %gs:RESULT
+
+ .type sem_wait_cleanup,@function
+sem_wait_cleanup:
LOCK
- orl $0x10, %gs:CANCELHANDLING
- movl %gs:CLEANUP_JMP_BUF, %eax
- jmp HIDDEN_JUMPTARGET (__pthread_unwind)
- cfi_endproc
- .size sem_timedwait,.-sem_timedwait
+ decl NWAITERS(%ebx)
+ movl %eax, (%esp)
+.LcallUR:
+ call _Unwind_Resume@PLT
+ hlt
+.LENDCODE:
+ .size sem_wait_cleanup,.-sem_wait_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_wait_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 -4 # Data alignment factor.
+ .byte 8 # 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 6 # Augmentation value length.
+ .byte 0x0 # Personality: absolute
+ .long __gcc_personality_v0
+ .byte 0x0 # LSDA Encoding: absolute
+#endif
+ .byte 0x0c # DW_CFA_def_cfa
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 # DW_CFA_offset, column 0x10
+ .uleb128 1
+ .align 4
+.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.
+#else
+ .long .LSTARTCODE # Start address of the code.
+#endif
+ .long .LENDCODE-.LSTARTCODE # Length of the code.
+ .uleb128 4 # Augmentation size
+#ifdef SHARED
+ .long .LexceptSTART-.
+#else
+ .long .LexceptSTART
+#endif
+
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_esi-.LSTARTCODE
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 8
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 2
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_edi-.Lpush_esi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 12
+ .byte 0x87 # DW_CFA_offset %edi
+ .uleb128 3
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpush_ebx-.Lpush_edi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 4
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lsub_esp-.Lpush_ebx
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 28
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Ladd_esp-.Lsub_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 16
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_ebx-.Ladd_esp
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 12
+ .byte 0xc3 # DW_CFA_restore %ebx
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_edi-.Lpop_ebx
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 8
+ .byte 0xc7 # DW_CFA_restore %edi
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lpop_esi-.Lpop_edi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 4
+ .byte 0xc6 # DW_CFA_restore %esi
+ .byte 4 # DW_CFA_advance_loc4
+ .long .Lafter_ret-.Lpop_esi
+ .byte 14 # DW_CFA_def_cfa_offset
+ .uleb128 28
+ .byte 0x86 # DW_CFA_offset %esi
+ .uleb128 2
+ .byte 0x87 # DW_CFA_offset %edi
+ .uleb128 3
+ .byte 0x83 # DW_CFA_offset %ebx
+ .uleb128 4
+ .align 4
+.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 4
+ .type DW.ref.__gcc_personality_v0, @object
+ .size DW.ref.__gcc_personality_v0, 4
+DW.ref.__gcc_personality_v0:
+ .long __gcc_personality_v0
+#endif
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