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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/pthread_cond_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/pthread_cond_timedwait.S')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S698
1 files changed, 0 insertions, 698 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
deleted file mode 100644
index fd388f993..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
+++ /dev/null
@@ -1,698 +0,0 @@
-/* Copyright (C) 2002-2004,2006-2007,2009,2010 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 <lowlevellock.h>
-#include <lowlevelcond.h>
-#include <pthread-errnos.h>
-#include <pthread-pi-defines.h>
-#include <bits/kernel-features.h>
-#include <tcb-offsets.h>
-
-
- .text
-
-/* int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
- const struct timespec *abstime) */
- .globl __pthread_cond_timedwait
- .type __pthread_cond_timedwait, @function
- .protected __pthread_cond_timedwait
- .align 16
-__pthread_cond_timedwait:
-.LSTARTCODE:
- cfi_startproc
-#ifdef SHARED
- cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
- DW.ref.__gcc_personality_v0)
- cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
-#else
- cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0)
- cfi_lsda(DW_EH_PE_udata4, .LexceptSTART)
-#endif
-
- pushl %ebp
- cfi_adjust_cfa_offset(4)
- cfi_rel_offset(%ebp, 0)
- pushl %edi
- cfi_adjust_cfa_offset(4)
- cfi_rel_offset(%edi, 0)
- pushl %esi
- cfi_adjust_cfa_offset(4)
- cfi_rel_offset(%esi, 0)
- pushl %ebx
- cfi_adjust_cfa_offset(4)
- cfi_rel_offset(%ebx, 0)
-
- movl 20(%esp), %ebx
- movl 28(%esp), %ebp
-
- cmpl $1000000000, 4(%ebp)
- movl $EINVAL, %eax
- jae 18f
-
- /* Get internal lock. */
- movl $1, %edx
- xorl %eax, %eax
- LOCK
-#if cond_lock == 0
- cmpxchgl %edx, (%ebx)
-#else
- cmpxchgl %edx, cond_lock(%ebx)
-#endif
- jnz 1f
-
- /* Store the reference to the mutex. If there is already a
- different value in there this is a bad user bug. */
-2: cmpl $-1, dep_mutex(%ebx)
- movl 24(%esp), %eax
- je 17f
- movl %eax, dep_mutex(%ebx)
-
- /* Unlock the mutex. */
-17: xorl %edx, %edx
- call __pthread_mutex_unlock_usercnt
-
- testl %eax, %eax
- jne 16f
-
- addl $1, total_seq(%ebx)
- adcl $0, total_seq+4(%ebx)
- addl $1, cond_futex(%ebx)
- addl $(1 << nwaiters_shift), cond_nwaiters(%ebx)
-
-#define FRAME_SIZE 32
- subl $FRAME_SIZE, %esp
- cfi_adjust_cfa_offset(FRAME_SIZE)
- cfi_remember_state
-
- /* Get and store current wakeup_seq value. */
- movl wakeup_seq(%ebx), %edi
- movl wakeup_seq+4(%ebx), %edx
- movl broadcast_seq(%ebx), %eax
- movl %edi, 12(%esp)
- movl %edx, 16(%esp)
- movl %eax, 20(%esp)
-
- /* Reset the pi-requeued flag. */
-8: movl $0, 24(%esp)
- /* Get the current time. */
- movl %ebx, %edx
-#ifdef __NR_clock_gettime
- /* Get the clock number. */
- movl cond_nwaiters(%ebx), %ebx
- andl $((1 << nwaiters_shift) - 1), %ebx
- /* Only clocks 0 and 1 are allowed so far. Both are handled in the
- kernel. */
- leal 4(%esp), %ecx
- movl $__NR_clock_gettime, %eax
- ENTER_KERNEL
-# ifndef __ASSUME_POSIX_TIMERS
- cmpl $-ENOSYS, %eax
- je 19f
-# endif
- movl %edx, %ebx
-
- /* Compute relative timeout. */
- movl (%ebp), %ecx
- movl 4(%ebp), %edx
- subl 4(%esp), %ecx
- subl 8(%esp), %edx
-#else
- /* Get the current time. */
- leal 4(%esp), %ebx
- xorl %ecx, %ecx
- movl $__NR_gettimeofday, %eax
- ENTER_KERNEL
- movl %edx, %ebx
-
- /* Compute relative timeout. */
- movl 8(%esp), %eax
- movl $1000, %edx
- mul %edx /* Milli seconds to nano seconds. */
- movl (%ebp), %ecx
- movl 4(%ebp), %edx
- subl 4(%esp), %ecx
- subl %eax, %edx
-#endif
- jns 12f
- addl $1000000000, %edx
- subl $1, %ecx
-12: testl %ecx, %ecx
- movl $-ETIMEDOUT, %esi
- js 6f
-
- /* Store relative timeout. */
-21: movl %ecx, 4(%esp)
- movl %edx, 8(%esp)
-
- movl cond_futex(%ebx), %edi
- movl %edi, 28(%esp)
-
- /* Unlock. */
- LOCK
-#if cond_lock == 0
- subl $1, (%ebx)
-#else
- subl $1, cond_lock(%ebx)
-#endif
- jne 3f
-
-.LcleanupSTART:
-4: call __pthread_enable_asynccancel
- movl %eax, (%esp)
-
-#if FUTEX_PRIVATE_FLAG > 255
- xorl %ecx, %ecx
-#endif
- cmpl $-1, dep_mutex(%ebx)
- sete %cl
- je 40f
-
- movl dep_mutex(%ebx), %edi
- /* Requeue to a non-robust PI mutex if the PI bit is set and
- the robust bit is not set. */
- movl MUTEX_KIND(%edi), %eax
- andl $(ROBUST_BIT|PI_BIT), %eax
- cmpl $PI_BIT, %eax
- jne 40f
-
- movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx
- /* The following only works like this because we only support
- two clocks, represented using a single bit. */
- testl $1, cond_nwaiters(%ebx)
- /* XXX Need to implement using sete instead of a jump. */
- jne 42f
- orl $FUTEX_CLOCK_REALTIME, %ecx
-
- /* Requeue-PI uses absolute timeout */
-42: leal (%ebp), %esi
- movl 28(%esp), %edx
- addl $cond_futex, %ebx
- movl $SYS_futex, %eax
- ENTER_KERNEL
- subl $cond_futex, %ebx
- movl %eax, %esi
- /* Set the pi-requeued flag only if the kernel has returned 0. The
- kernel does not hold the mutex on ETIMEDOUT or any other error. */
- cmpl $0, %eax
- sete 24(%esp)
- je 41f
-
- /* Normal and PI futexes dont mix. Use normal futex functions only
- if the kernel does not support the PI futex functions. */
- cmpl $-ENOSYS, %eax
- jne 41f
- xorl %ecx, %ecx
-
-40: 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
- leal 4(%esp), %esi
- movl 28(%esp), %edx
- addl $cond_futex, %ebx
-.Ladd_cond_futex:
- movl $SYS_futex, %eax
- ENTER_KERNEL
- subl $cond_futex, %ebx
-.Lsub_cond_futex:
- movl %eax, %esi
-
-41: movl (%esp), %eax
- call __pthread_disable_asynccancel
-.LcleanupEND:
-
- /* Lock. */
- movl $1, %edx
- xorl %eax, %eax
- LOCK
-#if cond_lock == 0
- cmpxchgl %edx, (%ebx)
-#else
- cmpxchgl %edx, cond_lock(%ebx)
-#endif
- jnz 5f
-
-6: movl broadcast_seq(%ebx), %eax
- cmpl 20(%esp), %eax
- jne 23f
-
- movl woken_seq(%ebx), %eax
- movl woken_seq+4(%ebx), %ecx
-
- movl wakeup_seq(%ebx), %edi
- movl wakeup_seq+4(%ebx), %edx
-
- cmpl 16(%esp), %edx
- jne 7f
- cmpl 12(%esp), %edi
- je 15f
-
-7: cmpl %ecx, %edx
- jne 9f
- cmp %eax, %edi
- jne 9f
-
-15: cmpl $-ETIMEDOUT, %esi
- jne 8b
-
- addl $1, wakeup_seq(%ebx)
- adcl $0, wakeup_seq+4(%ebx)
- addl $1, cond_futex(%ebx)
- movl $ETIMEDOUT, %esi
- jmp 14f
-
-23: xorl %esi, %esi
- jmp 24f
-
-9: xorl %esi, %esi
-14: addl $1, woken_seq(%ebx)
- adcl $0, woken_seq+4(%ebx)
-
-24: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx)
-
- /* Wake up a thread which wants to destroy the condvar object. */
- movl total_seq(%ebx), %eax
- andl total_seq+4(%ebx), %eax
- cmpl $0xffffffff, %eax
- jne 25f
- movl cond_nwaiters(%ebx), %eax
- andl $~((1 << nwaiters_shift) - 1), %eax
- jne 25f
-
- addl $cond_nwaiters, %ebx
- movl $SYS_futex, %eax
-#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
-
-25: LOCK
-#if cond_lock == 0
- subl $1, (%ebx)
-#else
- subl $1, cond_lock(%ebx)
-#endif
- jne 10f
-
-11: movl 24+FRAME_SIZE(%esp), %eax
- /* With requeue_pi, the mutex lock is held in the kernel. */
- movl 24(%esp), %ecx
- testl %ecx, %ecx
- jnz 27f
-
- call __pthread_mutex_cond_lock
-26: addl $FRAME_SIZE, %esp
- cfi_adjust_cfa_offset(-FRAME_SIZE);
-
- /* We return the result of the mutex_lock operation if it failed. */
- testl %eax, %eax
-#ifdef HAVE_CMOV
- cmovel %esi, %eax
-#else
- jne 22f
- movl %esi, %eax
-22:
-#endif
-
-18: popl %ebx
- cfi_adjust_cfa_offset(-4)
- cfi_restore(%ebx)
- popl %esi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(%esi)
- popl %edi
- cfi_adjust_cfa_offset(-4)
- cfi_restore(%edi)
- popl %ebp
- cfi_adjust_cfa_offset(-4)
- cfi_restore(%ebp)
-
- ret
-
- cfi_restore_state
-
-27: call __pthread_mutex_cond_lock_adjust
- xorl %eax, %eax
- jmp 26b
-
- cfi_adjust_cfa_offset(-FRAME_SIZE);
- /* Initial locking failed. */
-1:
-#if cond_lock == 0
- movl %ebx, %edx
-#else
- leal cond_lock(%ebx), %edx
-#endif
-#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
-
- /* The initial unlocking of the mutex failed. */
-16:
- LOCK
-#if cond_lock == 0
- subl $1, (%ebx)
-#else
- subl $1, cond_lock(%ebx)
-#endif
- jne 18b
-
- movl %eax, %esi
-#if cond_lock == 0
- movl %ebx, %eax
-#else
- leal cond_lock(%ebx), %eax
-#endif
-#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
- jmp 18b
-
- cfi_adjust_cfa_offset(FRAME_SIZE)
-
- /* Unlock in loop requires wakeup. */
-3:
-#if cond_lock == 0
- movl %ebx, %eax
-#else
- leal cond_lock(%ebx), %eax
-#endif
-#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
-
- /* Locking in loop failed. */
-5:
-#if cond_lock == 0
- movl %ebx, %edx
-#else
- leal cond_lock(%ebx), %edx
-#endif
-#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
-
- /* Unlock after loop requires wakeup. */
-10:
-#if cond_lock == 0
- movl %ebx, %eax
-#else
- leal cond_lock(%ebx), %eax
-#endif
-#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
-
-#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
- /* clock_gettime not available. */
-19: leal 4(%esp), %ebx
- xorl %ecx, %ecx
- movl $__NR_gettimeofday, %eax
- ENTER_KERNEL
- movl %edx, %ebx
-
- /* Compute relative timeout. */
- movl 8(%esp), %eax
- movl $1000, %edx
- mul %edx /* Milli seconds to nano seconds. */
- movl (%ebp), %ecx
- movl 4(%ebp), %edx
- subl 4(%esp), %ecx
- subl %eax, %edx
- jns 20f
- addl $1000000000, %edx
- subl $1, %ecx
-20: testl %ecx, %ecx
- movl $-ETIMEDOUT, %esi
- js 6b
- jmp 21b
-#endif
- .size __pthread_cond_timedwait, .-__pthread_cond_timedwait
-weak_alias(__pthread_cond_timedwait, pthread_cond_timedwait)
-
-
- .type __condvar_tw_cleanup2, @function
-__condvar_tw_cleanup2:
- subl $cond_futex, %ebx
- .size __condvar_tw_cleanup2, .-__condvar_tw_cleanup2
- .type __condvar_tw_cleanup, @function
-__condvar_tw_cleanup:
- movl %eax, %esi
-
- /* Get internal lock. */
- movl $1, %edx
- xorl %eax, %eax
- LOCK
-#if cond_lock == 0
- cmpxchgl %edx, (%ebx)
-#else
- cmpxchgl %edx, cond_lock(%ebx)
-#endif
- jz 1f
-
-#if cond_lock == 0
- movl %ebx, %edx
-#else
- leal cond_lock(%ebx), %edx
-#endif
-#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
- cmpl 20(%esp), %eax
- jne 3f
-
- /* We increment the wakeup_seq counter only if it is lower than
- total_seq. If this is not the case the thread was woken and
- then canceled. In this case we ignore the signal. */
- movl total_seq(%ebx), %eax
- movl total_seq+4(%ebx), %edi
- cmpl wakeup_seq+4(%ebx), %edi
- jb 6f
- ja 7f
- cmpl wakeup_seq(%ebx), %eax
- jbe 7f
-
-6: addl $1, wakeup_seq(%ebx)
- adcl $0, wakeup_seq+4(%ebx)
- addl $1, cond_futex(%ebx)
-
-7: addl $1, woken_seq(%ebx)
- adcl $0, woken_seq+4(%ebx)
-
-3: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx)
-
- /* Wake up a thread which wants to destroy the condvar object. */
- xorl %edi, %edi
- movl total_seq(%ebx), %eax
- andl total_seq+4(%ebx), %eax
- cmpl $0xffffffff, %eax
- jne 4f
- movl cond_nwaiters(%ebx), %eax
- andl $~((1 << nwaiters_shift) - 1), %eax
- jne 4f
-
- addl $cond_nwaiters, %ebx
- movl $SYS_futex, %eax
-#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
- movl $1, %edi
-
-4: LOCK
-#if cond_lock == 0
- subl $1, (%ebx)
-#else
- subl $1, cond_lock(%ebx)
-#endif
- je 2f
-
-#if cond_lock == 0
- movl %ebx, %eax
-#else
- leal cond_lock(%ebx), %eax
-#endif
-#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
-#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
-
-5: movl 24+FRAME_SIZE(%esp), %eax
- call __pthread_mutex_cond_lock
-
- movl %esi, (%esp)
-.LcallUR:
-#ifdef __PIC__
- call __i686.get_pc_thunk.bx
- addl $_GLOBAL_OFFSET_TABLE_, %ebx
-#endif
- call _Unwind_Resume@PLT
- hlt
-.LENDCODE:
- cfi_endproc
- .size __condvar_tw_cleanup, .-__condvar_tw_cleanup
-
-
- .section .gcc_except_table,"a",@progbits
-.LexceptSTART:
- .byte DW_EH_PE_omit # @LPStart format (omit)
- .byte DW_EH_PE_omit # @TType format (omit)
- .byte DW_EH_PE_sdata4 # call-site format
- # DW_EH_PE_sdata4
- .uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
- .long .LcleanupSTART-.LSTARTCODE
- .long .Ladd_cond_futex-.LcleanupSTART
- .long __condvar_tw_cleanup-.LSTARTCODE
- .uleb128 0
- .long .Ladd_cond_futex-.LSTARTCODE
- .long .Lsub_cond_futex-.Ladd_cond_futex
- .long __condvar_tw_cleanup2-.LSTARTCODE
- .uleb128 0
- .long .Lsub_cond_futex-.LSTARTCODE
- .long .LcleanupEND-.Lsub_cond_futex
- .long __condvar_tw_cleanup-.LSTARTCODE
- .uleb128 0
- .long .LcallUR-.LSTARTCODE
- .long .LENDCODE-.LcallUR
- .long 0
- .uleb128 0
-.Lcstend:
-
-
-#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