[Glibc-bsd-commits] r4572 - trunk/glibc-ports/kfreebsd/x86_64/fbtl
Petr Salinger
ps-guest at alioth.debian.org
Mon Jul 8 12:42:51 UTC 2013
Author: ps-guest
Date: 2013-06-22 18:42:20 +0000 (Sat, 22 Jun 2013)
New Revision: 4572
Added:
trunk/glibc-ports/kfreebsd/x86_64/fbtl/libc-lowlevellock.S
trunk/glibc-ports/kfreebsd/x86_64/fbtl/lowlevellock.S
Log:
more lowlevellock stubs
Added: trunk/glibc-ports/kfreebsd/x86_64/fbtl/libc-lowlevellock.S
===================================================================
--- trunk/glibc-ports/kfreebsd/x86_64/fbtl/libc-lowlevellock.S (rev 0)
+++ trunk/glibc-ports/kfreebsd/x86_64/fbtl/libc-lowlevellock.S 2013-06-22 18:42:20 UTC (rev 4572)
@@ -0,0 +1,19 @@
+/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper at 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 "lowlevellock.S"
Added: trunk/glibc-ports/kfreebsd/x86_64/fbtl/lowlevellock.S
===================================================================
--- trunk/glibc-ports/kfreebsd/x86_64/fbtl/lowlevellock.S (rev 0)
+++ trunk/glibc-ports/kfreebsd/x86_64/fbtl/lowlevellock.S 2013-06-22 18:42:20 UTC (rev 4572)
@@ -0,0 +1,462 @@
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper at 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
+
+#ifdef __ASSUME_PRIVATE_FUTEX
+# 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
+#else
+# if FUTEX_WAIT == 0
+# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
+ movl %fs:PRIVATE_FUTEX, reg
+# else
+# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
+ movl %fs:PRIVATE_FUTEX, reg ; \
+ orl $FUTEX_WAIT, reg
+# endif
+# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
+ movl %fs:PRIVATE_FUTEX, reg ; \
+ orl $FUTEX_WAKE, reg
+# if FUTEX_WAIT == 0
+# define LOAD_FUTEX_WAIT(reg) \
+ xorl $FUTEX_PRIVATE_FLAG, reg ; \
+ andl %fs:PRIVATE_FUTEX, reg
+# else
+# define LOAD_FUTEX_WAIT(reg) \
+ xorl $FUTEX_PRIVATE_FLAG, reg ; \
+ andl %fs:PRIVATE_FUTEX, reg ; \
+ orl $FUTEX_WAIT, reg
+# endif
+# define LOAD_FUTEX_WAIT_ABS(reg) \
+ xorl $FUTEX_PRIVATE_FLAG, reg ; \
+ andl %fs:PRIVATE_FUTEX, reg ; \
+ orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg
+# define LOAD_FUTEX_WAKE(reg) \
+ xorl $FUTEX_PRIVATE_FLAG, reg ; \
+ andl %fs:PRIVATE_FUTEX, reg ; \
+ orl $FUTEX_WAKE, reg
+#endif
+
+
+ .globl __lll_lock_wait_private
+ .type __lll_lock_wait_private, at 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
+
+#ifdef NOT_IN_libc
+ .globl __lll_lock_wait
+ .type __lll_lock_wait, at 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, at function
+ .hidden __lll_timedlock_wait
+ .align 16
+__lll_timedlock_wait:
+ cfi_startproc
+# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
+# ifdef PIC
+ cmpl $0, __have_futex_clock_realtime(%rip)
+# else
+ cmpl $0, __have_futex_clock_realtime
+# endif
+ je .Lreltmo
+# endif
+
+ 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
+
+# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
+.Lreltmo:
+ /* Check for a valid timeout value. */
+ cmpq $1000000000, 8(%rdx)
+ jae 3f
+
+ pushq %r8
+ cfi_adjust_cfa_offset(8)
+ pushq %r9
+ cfi_adjust_cfa_offset(8)
+ pushq %r12
+ cfi_adjust_cfa_offset(8)
+ pushq %r13
+ cfi_adjust_cfa_offset(8)
+ pushq %r14
+ cfi_adjust_cfa_offset(8)
+ cfi_offset(%r8, -16)
+ cfi_offset(%r9, -24)
+ cfi_offset(%r12, -32)
+ cfi_offset(%r13, -40)
+ cfi_offset(%r14, -48)
+ pushq %rsi
+ cfi_adjust_cfa_offset(8)
+
+ /* Stack frame for the timespec and timeval structs. */
+ subq $24, %rsp
+ cfi_adjust_cfa_offset(24)
+
+ movq %rdi, %r12
+ movq %rdx, %r13
+
+ movl $2, %edx
+ xchgl %edx, (%r12)
+
+ testl %edx, %edx
+ je 6f
+
+1:
+ /* Get current time. */
+ movq %rsp, %rdi
+ xorl %esi, %esi
+ /* This call works because we directly jump to a system call entry
+ which preserves all the registers. */
+ call JUMPTARGET(__gettimeofday)
+
+ /* Compute relative timeout. */
+ movq 8(%rsp), %rax
+ movl $1000, %edi
+ mul %rdi /* Milli seconds to nano seconds. */
+ movq (%r13), %rdi
+ movq 8(%r13), %rsi
+ subq (%rsp), %rdi
+ subq %rax, %rsi
+ jns 4f
+ addq $1000000000, %rsi
+ decq %rdi
+4: testq %rdi, %rdi
+ js 2f /* Time is already up. */
+
+ /* Store relative timeout. */
+ movq %rdi, (%rsp)
+ movq %rsi, 8(%rsp)
+
+ /* Futex call. */
+ movl $2, %edx
+ movl $1, %eax
+ movq %rsp, %r10
+ movl 24(%rsp), %esi
+ LOAD_FUTEX_WAIT (%esi)
+ movq %r12, %rdi
+ movl $SYS_futex, %eax
+ syscall
+
+ /* NB: %edx == 2 */
+ xchgl %edx, (%r12)
+
+ testl %edx, %edx
+ je 6f
+
+ cmpl $-ETIMEDOUT, %eax
+ jne 1b
+2: movl $ETIMEDOUT, %edx
+
+6: addq $32, %rsp
+ cfi_adjust_cfa_offset(-32)
+ popq %r14
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r14)
+ popq %r13
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r13)
+ popq %r12
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r12)
+ popq %r9
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r9)
+ popq %r8
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r8)
+ movl %edx, %eax
+ retq
+
+3: movl $EINVAL, %eax
+ retq
+# endif
+ cfi_endproc
+ .size __lll_timedlock_wait,.-__lll_timedlock_wait
+#endif
+
+
+ .globl __lll_unlock_wake_private
+ .type __lll_unlock_wake_private, at 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
+
+#ifdef NOT_IN_libc
+ .globl __lll_unlock_wake
+ .type __lll_unlock_wake, at 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
+
+ .globl __lll_timedwait_tid
+ .type __lll_timedwait_tid, at function
+ .hidden __lll_timedwait_tid
+ .align 16
+__lll_timedwait_tid:
+ cfi_startproc
+ pushq %r12
+ cfi_adjust_cfa_offset(8)
+ pushq %r13
+ cfi_adjust_cfa_offset(8)
+ cfi_offset(%r12, -16)
+ cfi_offset(%r13, -24)
+
+ movq %rdi, %r12
+ movq %rsi, %r13
+
+ subq $16, %rsp
+ cfi_adjust_cfa_offset(16)
+
+ /* Get current time. */
+2: movq %rsp, %rdi
+ xorl %esi, %esi
+ /* This call works because we directly jump to a system call entry
+ which preserves all the registers. */
+ call JUMPTARGET(__gettimeofday)
+
+ /* Compute relative timeout. */
+ movq 8(%rsp), %rax
+ movl $1000, %edi
+ mul %rdi /* Milli seconds to nano seconds. */
+ movq (%r13), %rdi
+ movq 8(%r13), %rsi
+ subq (%rsp), %rdi
+ subq %rax, %rsi
+ jns 5f
+ addq $1000000000, %rsi
+ decq %rdi
+5: testq %rdi, %rdi
+ js 6f /* Time is already up. */
+
+ movq %rdi, (%rsp) /* Store relative timeout. */
+ movq %rsi, 8(%rsp)
+
+ movl (%r12), %edx
+ testl %edx, %edx
+ jz 4f
+
+ movq %rsp, %r10
+ /* XXX The kernel so far uses global futex for the wakeup at
+ all times. */
+#if FUTEX_WAIT == 0
+ xorl %esi, %esi
+#else
+ movl $FUTEX_WAIT, %esi
+#endif
+ movq %r12, %rdi
+ movl $SYS_futex, %eax
+ syscall
+
+ cmpl $0, (%rdi)
+ jne 1f
+4: xorl %eax, %eax
+
+8: addq $16, %rsp
+ cfi_adjust_cfa_offset(-16)
+ popq %r13
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r13)
+ popq %r12
+ cfi_adjust_cfa_offset(-8)
+ cfi_restore(%r12)
+ retq
+
+ cfi_adjust_cfa_offset(32)
+1: cmpq $-ETIMEDOUT, %rax
+ jne 2b
+
+6: movl $ETIMEDOUT, %eax
+ jmp 8b
+ cfi_endproc
+ .size __lll_timedwait_tid,.-__lll_timedwait_tid
+#endif
More information about the Glibc-bsd-commits
mailing list