definitions.
* sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S: New file.
+2006-02-17 Kaz Kojima <kkojima@rr.iij4u.or.jp>
+
+ * sysdeps/unix/sysv/linux/sh/lowlevellock.h: Add lll_robust_mutex_*
+ definitions.
+ * sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S: New file.
+
2006-02-17 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
: "r0", "r1", "r2", "t", "memory"); \
__result; })
+#define lll_robust_mutex_trylock(futex, id) \
+ ({ unsigned char __result; \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ nop\n\
+ mov r15,r1\n\
+ mov #-8,r15\n\
+ 0: mov.l @%1,r2\n\
+ cmp/eq r2,%3\n\
+ bf 1f\n\
+ mov.l %2,@%1\n\
+ 1: mov r1,r15\n\
+ mov #-1,%0\n\
+ negc %0,%0"\
+ : "=r" (__result) \
+ : "r" (&(futex)), \
+ "r" (id), \
+ "r" (LLL_MUTEX_LOCK_INITIALIZER) \
+ : "r0", "r1", "r2", "t", "memory"); \
+ __result; })
+
#define lll_mutex_cond_trylock(futex) \
({ unsigned char __result; \
__asm __volatile ("\
if (__result) \
__lll_mutex_lock_wait (__result, __futex); })
+#define lll_robust_mutex_lock(futex, id) \
+ ({ int __result, val, *__futex = &(futex); \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ nop\n\
+ mov r15,r1\n\
+ mov #-8,r15\n\
+ 0: mov.l @%2,%0\n\
+ tst %0,%0\n\
+ bf 1f\n\
+ mov.l %1,@%2\n\
+ 1: mov r1,r15"\
+ : "=&r" (__result) : "r" (id), "r" (__futex) \
+ : "r0", "r1", "t", "memory"); \
+ if (__result) \
+ __result = __lll_robust_mutex_lock_wait (__result, __futex); \
+ __result; })
+
/* Special version of lll_mutex_lock which causes the unlock function to
always wakeup waiters. */
#define lll_mutex_cond_lock(futex) \
if (__result) \
__lll_mutex_lock_wait (__result, __futex); })
+#define lll_robust_mutex_cond_lock(futex, id) \
+ ({ int __result, val, *__futex = &(futex); \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ nop\n\
+ mov r15,r1\n\
+ mov #-8,r15\n\
+ 0: mov.l @%2,%0\n\
+ tst %0,%0\n\
+ bf 1f\n\
+ mov.l %1,@%2\n\
+ 1: mov r1,r15"\
+ : "=&r" (__result) : "r" (id | FUTEX_WAITERS), "r" (__futex) \
+ : "r0", "r1", "t", "memory"); \
+ if (__result) \
+ __result = __lll_robust_mutex_lock_wait (__result, __futex); \
+ __result; })
+
#define lll_mutex_timedlock(futex, timeout) \
({ int __result, val, *__futex = &(futex); \
__asm __volatile ("\
__result = __lll_mutex_timedlock_wait (__result, __futex, timeout); \
__result; })
+#define lll_robust_mutex_timedlock(futex, timeout, id) \
+ ({ int __result, val, *__futex = &(futex); \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ nop\n\
+ mov r15,r1\n\
+ mov #-8,r15\n\
+ 0: mov.l @%2,%0\n\
+ tst %0,%0\n\
+ bf 1f\n\
+ mov.l %1,@%2\n\
+ 1: mov r1,r15"\
+ : "=&r" (__result) : "r" (id), "r" (__futex) \
+ : "r0", "r1", "t", "memory"); \
+ if (__result) \
+ __result = __lll_robust_mutex_timedlock_wait (__result, __futex, \
+ timeout); \
+ __result; })
+
#define lll_mutex_unlock(futex) \
(void) ({ int __result, *__futex = &(futex); \
__asm __volatile ("\
if (__result) \
__lll_mutex_unlock_wake (__futex); })
+#define lll_robust_mutex_unlock(futex) \
+ (void) ({ int __result, *__futex = &(futex); \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ mov r15,r1\n\
+ mov #-6,r15\n\
+ 0: mov.l @%1,%0\n\
+ and %2,%0\n\
+ mov.l %0,@%1\n\
+ 1: mov r1,r15"\
+ : "=&r" (__result) : "r" (__futex), "r" (FUTEX_TID_MASK) \
+ : "r0", "r1", "memory"); \
+ if (__result) \
+ __lll_mutex_unlock_wake (__futex); })
+
+#define lll_robust_mutex_dead(futex) \
+ (void) ({ int __ignore, *__futex = &(futex); \
+ __asm __volatile ("\
+ .align 2\n\
+ mova 1f,r0\n\
+ mov r15,r1\n\
+ mov #-6,r15\n\
+ 0: mov.l @%1,%0\n\
+ or %2,%0\n\
+ mov.l %0,@%1\n\
+ 1: mov r1,r15"\
+ : "=&r" (__ignore) : "r" (__futex), "r" (FUTEX_OWNER_DIED) \
+ : "r0", "r1", "memory"); \
+ lll_futex_wake (__futex, 1); })
+
#define lll_mutex_islocked(futex) \
(futex != 0)
--- /dev/null
+/* Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <pthread-errnos.h>
+#include <lowlevelrobustlock.h>
+#include "lowlevel-atomic.h"
+
+ .text
+
+#define SYS_gettimeofday __NR_gettimeofday
+#define SYS_futex 240
+#define FUTEX_WAIT 0
+#define FUTEX_WAKE 1
+#define FUTEX_WAITERS 0x80000000
+#define FUTEX_OWNER_DIED 0x40000000
+
+
+ .globl __lll_robust_mutex_lock_wait
+ .type __lll_robust_mutex_lock_wait,@function
+ .hidden __lll_robust_mutex_lock_wait
+ .align 5
+ cfi_startproc
+__lll_robust_mutex_lock_wait:
+ mov.l r8, @-r15
+ cfi_adjust_cfa_offset(4)
+ cfi_rel_offset (r8, 0)
+ mov r5, r8
+ mov #0, r7 /* No timeout. */
+ mov #FUTEX_WAIT, r5
+
+4:
+ mov r4, r6
+ mov.l .L_FUTEX_WAITERS, r0
+ or r0, r6
+ shlr r0 /* r0 = FUTEX_OWNER_DIED */
+ tst r0, r4
+ bf/s 3f
+ cmp/eq r4, r6
+ bt 1f
+
+ CMPXCHG (r4, @r8, r6, r2)
+ bf 2f
+
+1:
+ mov r8, r4
+ mov #SYS_futex, r3
+ extu.b r3, r3
+ trapa #0x14
+ SYSCALL_INST_PAD
+
+ mov.l @r8, r2
+
+2:
+ tst r2, r2
+ bf/s 4b
+ mov r2, r4
+
+ stc gbr, r1
+ mov.w .Ltidoff, r2
+ add r2, r1
+ mov.l @r1, r6
+ mov #0, r3
+ CMPXCHG (r3, @r8, r6, r4)
+ bf 4b
+ mov #0, r4
+
+3:
+ mov.l @r15+, r8
+ ret
+ mov r4, r0
+ cfi_endproc
+ .align 2
+.L_FUTEX_WAITERS:
+ .long FUTEX_WAITERS
+.Ltidoff:
+ .word TID - TLS_PRE_TCB_SIZE
+ .size __lll_robust_mutex_lock_wait,.-__lll_robust_mutex_lock_wait
+
+
+ .globl __lll_robust_mutex_timedlock_wait
+ .type __lll_robust_mutex_timedlock_wait,@function
+ .hidden __lll_robust_mutex_timedlock_wait
+ .align 5
+ cfi_startproc
+__lll_robust_mutex_timedlock_wait:
+ /* Check for a valid timeout value. */
+ mov.l @(4,r6), r1
+ mov.l .L1g, r0
+ cmp/hs r0, r1
+ bt 3f
+
+ mov.l r10, @-r15
+ cfi_adjust_cfa_offset(4)
+ cfi_rel_offset (r10, 0)
+ mov.l r9, @-r15
+ cfi_adjust_cfa_offset(4)
+ cfi_rel_offset (r9, 0)
+ mov.l r8, @-r15
+ cfi_adjust_cfa_offset(4)
+ cfi_rel_offset (r8, 0)
+ mov r4, r10
+ mov r6, r9
+ mov r5, r8
+
+ /* Stack frame for the timespec and timeval structs. */
+ add #-8, r15
+ cfi_adjust_cfa_offset(8)
+
+1:
+ /* Get current time. */
+ mov r15, r4
+ mov #0, r5
+ mov #SYS_gettimeofday, r3
+ trapa #0x12
+ SYSCALL_INST_PAD
+
+ /* Compute relative timeout. */
+ mov.l @(4,r15), r0
+ mov.w .L1k, r1
+ dmulu.l r0, r1 /* Micro seconds to nano seconds. */
+ mov.l @r9, r2
+ mov.l @(4,r9), r3
+ mov.l @r15, r0
+ sts macl, r1
+ sub r0, r2
+ clrt
+ subc r1, r3
+ bf 4f
+ mov.l .L1g, r1
+ add r1, r3
+ add #-1, r2
+4:
+ cmp/pz r2
+ bf 8f /* Time is already up. */
+
+ mov.l r2, @r15 /* Store relative timeout. */
+ mov.l r3, @(4,r15)
+
+ mov r10, r6
+ mov.l .L_FUTEX_WAITERS2, r0
+ or r0, r6
+ shlr r0 /* r0 = FUTEX_OWNER_DIED */
+ tst r0, r4
+ bf/s 6f
+ cmp/eq r4, r6
+ bt 2f
+
+ CMPXCHG (r4, @r8, r6, r2)
+ bf/s 5f
+ mov #0, r5
+
+2:
+ mov r8, r4
+ mov #FUTEX_WAIT, r5
+ mov r10, r6
+ mov r15, r7
+ mov #SYS_futex, r3
+ extu.b r3, r3
+ trapa #0x14
+ SYSCALL_INST_PAD
+ mov r0, r5
+
+ mov.l @r8, r2
+
+5:
+ tst r2, r2
+ bf/s 7f
+ mov r2, r10
+
+ stc gbr, r1
+ mov.w .Ltidoff2, r2
+ add r2, r1
+ mov.l @r1, r4
+ mov #0, r3
+ CMPXCHG (r3, @r8, r4, r10)
+ bf 7f
+ mov #0, r0
+
+6:
+ add #8, r15
+ mov.l @r15+, r8
+ mov.l @r15+, r9
+ rts
+ mov.l @r15+, r10
+
+7:
+ /* Check whether the time expired. */
+ mov #-ETIMEDOUT, r1
+ cmp/eq r5, r1
+ bf 1b
+
+8:
+ bra 6b
+ mov #ETIMEDOUT, r0
+3:
+ rts
+ mov #EINVAL, r0
+ cfi_endproc
+ .align 2
+.L_FUTEX_WAITERS2:
+ .long FUTEX_WAITERS
+.L1g:
+ .long 1000000000
+.Ltidoff2:
+ .word TID - TLS_PRE_TCB_SIZE
+.L1k:
+ .word 1000
+ .size __lll_robust_mutex_timedlock_wait,.-__lll_robust_mutex_timedlock_wait
git://sourceware.org / glibc.git / commitdiff