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authorDmitry Chestnykh <dm.chestnykh@gmail.com>2024-04-19 12:45:13 +0300
committerWaldemar Brodkorb <wbx@openadk.org>2024-04-20 06:39:11 +0200
commitce2eec56c3845ce70259e2af936d1e816c3763da (patch)
treefd6ce9fe60b5e6b5465c209172d4c28be0481b6d /libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
parent225478e84d4115205bfee73d1cf5688fdde499c8 (diff)
Switch x86 NPTL impl to generic C code.
The asm code has high maintainance cost. The cost is extremely high if we take into consideration time64 implementation which implies operating with 64bit numbers on 32bit system. Also glibc uses mainly C in NPTL code. Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S328
1 files changed, 0 insertions, 328 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
deleted file mode 100644
index 6d6968100..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
+++ /dev/null
@@ -1,328 +0,0 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-#include <lowlevellock.h>
-
-
-#if VALUE != 0
-# error "code needs to be rewritten for VALUE != 0"
-#endif
-
-
- .text
-
- .globl sem_timedwait
- .type sem_timedwait,@function
- .align 16
-sem_timedwait:
-.LSTARTCODE:
- movl 4(%esp), %ecx
-
- movl (%ecx), %eax
-2: testl %eax, %eax
- je 1f
-
- leal -1(%eax), %edx
- LOCK
- cmpxchgl %edx, (%ecx)
- jne 2b
-
- xorl %eax, %eax
- ret
-
- /* Check whether the timeout value is valid. */
-1: pushl %esi
-.Lpush_esi:
- pushl %edi
-.Lpush_edi:
- pushl %ebx
-.Lpush_ebx:
- subl $12, %esp
-.Lsub_esp:
-
- movl 32(%esp), %edi
-
- /* Check for invalid nanosecond field. */
- cmpl $1000000000, 4(%edi)
- movl $EINVAL, %esi
- jae 6f
-
- LOCK
- incl NWAITERS(%ecx)
-
-7: xorl %ecx, %ecx
- movl %esp, %ebx
- movl %ecx, %edx
- movl $__NR_gettimeofday, %eax
- ENTER_KERNEL
-
- /* Compute relative timeout. */
- movl 4(%esp), %eax
- movl $1000, %edx
- mul %edx /* Milli seconds to nano seconds. */
- movl (%edi), %ecx
- movl 4(%edi), %edx
- subl (%esp), %ecx
- subl %eax, %edx
- jns 5f
- addl $1000000000, %edx
- subl $1, %ecx
-5: testl %ecx, %ecx
- movl $ETIMEDOUT, %esi
- js 6f /* Time is already up. */
-
- movl %ecx, (%esp) /* Store relative timeout. */
- movl %edx, 4(%esp)
-
-.LcleanupSTART:
- call __pthread_enable_asynccancel
- movl %eax, 8(%esp)
-
- 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
- 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
- cmpl $-EWOULDBLOCK, %esi
- jne 3f
-
-9: movl (%ebx), %eax
-8: testl %eax, %eax
- je 7b
-
- leal -1(%eax), %ecx
- LOCK
- cmpxchgl %ecx, (%ebx)
- jne 8b
-
- xorl %eax, %eax
-
- LOCK
- decl NWAITERS(%ebx)
-
-10: addl $12, %esp
-.Ladd_esp:
- popl %ebx
-.Lpop_ebx:
- popl %edi
-.Lpop_edi:
- popl %esi
-.Lpop_esi:
- ret
-
-.Lafter_ret:
-3: negl %esi
-6:
-#ifdef __PIC__
- call __x86.get_pc_thunk.bx
-#else
- movl $4f, %ebx
-4:
-#endif
- addl $_GLOBAL_OFFSET_TABLE_, %ebx
-#if USE___THREAD
-# ifdef NO_TLS_DIRECT_SEG_REFS
- movl errno@gotntpoff(%ebx), %edx
- addl %gs:0, %edx
- movl %esi, (%edx)
-# else
- movl errno@gotntpoff(%ebx), %edx
- movl %esi, %gs:(%edx)
-# endif
-#else
- call __errno_location@plt
- movl %esi, (%eax)
-#endif
-
- movl 28(%esp), %ebx /* Load semaphore address. */
- orl $-1, %eax
- jmp 10b
- .size sem_timedwait,.-sem_timedwait
-
-
- .type sem_wait_cleanup,@function
-sem_wait_cleanup:
- LOCK
- 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