diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/lowlevellock.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/lowlevellock.S | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S deleted file mode 100644 index 00ba88d5d2..0000000000 --- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S +++ /dev/null @@ -1,233 +0,0 @@ -/* Copyright (C) 2002-2019 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 <kernel-features.h> -#include <lowlevellock.h> - -#include <stap-probe.h> - - .text - -#define LOAD_PRIVATE_FUTEX_WAIT(reg) \ - movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg -#define LOAD_PRIVATE_FUTEX_WAKE(reg) \ - movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg -#define LOAD_FUTEX_WAIT(reg) \ - xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg -#define LOAD_FUTEX_WAIT_ABS(reg) \ - xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg -#define LOAD_FUTEX_WAKE(reg) \ - xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg - - - .globl __lll_lock_wait_private - .type __lll_lock_wait_private,@function - .hidden __lll_lock_wait_private - .align 16 -__lll_lock_wait_private: - cfi_startproc - pushq %r10 - cfi_adjust_cfa_offset(8) - pushq %rdx - cfi_adjust_cfa_offset(8) - cfi_offset(%r10, -16) - cfi_offset(%rdx, -24) - xorq %r10, %r10 /* No timeout. */ - movl $2, %edx - LOAD_PRIVATE_FUTEX_WAIT (%esi) - - cmpl %edx, %eax /* NB: %edx == 2 */ - jne 2f - -1: LIBC_PROBE (lll_lock_wait_private, 1, %rdi) - movl $SYS_futex, %eax - syscall - -2: movl %edx, %eax - xchgl %eax, (%rdi) /* NB: lock is implied */ - - testl %eax, %eax - jnz 1b - - popq %rdx - cfi_adjust_cfa_offset(-8) - cfi_restore(%rdx) - popq %r10 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r10) - retq - cfi_endproc - .size __lll_lock_wait_private,.-__lll_lock_wait_private - -#if !IS_IN (libc) - .globl __lll_lock_wait - .type __lll_lock_wait,@function - .hidden __lll_lock_wait - .align 16 -__lll_lock_wait: - cfi_startproc - pushq %r10 - cfi_adjust_cfa_offset(8) - pushq %rdx - cfi_adjust_cfa_offset(8) - cfi_offset(%r10, -16) - cfi_offset(%rdx, -24) - xorq %r10, %r10 /* No timeout. */ - movl $2, %edx - LOAD_FUTEX_WAIT (%esi) - - cmpl %edx, %eax /* NB: %edx == 2 */ - jne 2f - -1: LIBC_PROBE (lll_lock_wait, 2, %rdi, %rsi) - movl $SYS_futex, %eax - syscall - -2: movl %edx, %eax - xchgl %eax, (%rdi) /* NB: lock is implied */ - - testl %eax, %eax - jnz 1b - - popq %rdx - cfi_adjust_cfa_offset(-8) - cfi_restore(%rdx) - popq %r10 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r10) - retq - cfi_endproc - .size __lll_lock_wait,.-__lll_lock_wait - - /* %rdi: futex - %rsi: flags - %rdx: timeout - %eax: futex value - */ - .globl __lll_timedlock_wait - .type __lll_timedlock_wait,@function - .hidden __lll_timedlock_wait - .align 16 -__lll_timedlock_wait: - cfi_startproc - cmpq $0, (%rdx) - js 5f - - pushq %r9 - cfi_adjust_cfa_offset(8) - cfi_rel_offset(%r9, 0) - - movq %rdx, %r10 - movl $0xffffffff, %r9d - LOAD_FUTEX_WAIT_ABS (%esi) - - movl $2, %edx - cmpl %edx, %eax - jne 2f - -1: movl $SYS_futex, %eax - movl $2, %edx - syscall - -2: xchgl %edx, (%rdi) /* NB: lock is implied */ - - testl %edx, %edx - jz 3f - - cmpl $-ETIMEDOUT, %eax - je 4f - cmpl $-EINVAL, %eax - jne 1b -4: movl %eax, %edx - negl %edx - -3: movl %edx, %eax - popq %r9 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r9) - retq - -5: movl $ETIMEDOUT, %eax - retq - - cfi_endproc - .size __lll_timedlock_wait,.-__lll_timedlock_wait -#endif - - - .globl __lll_unlock_wake_private - .type __lll_unlock_wake_private,@function - .hidden __lll_unlock_wake_private - .align 16 -__lll_unlock_wake_private: - cfi_startproc - pushq %rsi - cfi_adjust_cfa_offset(8) - pushq %rdx - cfi_adjust_cfa_offset(8) - cfi_offset(%rsi, -16) - cfi_offset(%rdx, -24) - - movl $0, (%rdi) - LOAD_PRIVATE_FUTEX_WAKE (%esi) - movl $1, %edx /* Wake one thread. */ - movl $SYS_futex, %eax - syscall - - popq %rdx - cfi_adjust_cfa_offset(-8) - cfi_restore(%rdx) - popq %rsi - cfi_adjust_cfa_offset(-8) - cfi_restore(%rsi) - retq - cfi_endproc - .size __lll_unlock_wake_private,.-__lll_unlock_wake_private - -#if !IS_IN (libc) - .globl __lll_unlock_wake - .type __lll_unlock_wake,@function - .hidden __lll_unlock_wake - .align 16 -__lll_unlock_wake: - cfi_startproc - pushq %rsi - cfi_adjust_cfa_offset(8) - pushq %rdx - cfi_adjust_cfa_offset(8) - cfi_offset(%rsi, -16) - cfi_offset(%rdx, -24) - - movl $0, (%rdi) - LOAD_FUTEX_WAKE (%esi) - movl $1, %edx /* Wake one thread. */ - movl $SYS_futex, %eax - syscall - - popq %rdx - cfi_adjust_cfa_offset(-8) - cfi_restore(%rdx) - popq %rsi - cfi_adjust_cfa_offset(-8) - cfi_restore(%rsi) - retq - cfi_endproc - .size __lll_unlock_wake,.-__lll_unlock_wake -#endif |