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* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Add lll_robust_mutex_* 

definitions.
	* sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S: New file.
This commit is contained in:
Ulrich Drepper 2006-02-17 15:37:51 +00:00
parent 49bfc1fe3d
commit a7245bf527
3 changed files with 341 additions and 0 deletions
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6
nptl/ChangeLog
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@ -1,3 +1,9 @@
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

111
nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.h
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@ -62,6 +62,28 @@ extern int __lll_mutex_unlock_wake (int *__futex) attribute_hidden;
: "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 ("\
@ -102,6 +124,25 @@ extern int __lll_mutex_unlock_wake (int *__futex) attribute_hidden;
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) \
@ -122,6 +163,25 @@ extern int __lll_mutex_unlock_wake (int *__futex) attribute_hidden;
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 ("\
@ -141,6 +201,26 @@ extern int __lll_mutex_unlock_wake (int *__futex) attribute_hidden;
__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 ("\
@ -157,6 +237,37 @@ extern int __lll_mutex_unlock_wake (int *__futex) attribute_hidden;
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)

224
nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S Normal file
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@ -0,0 +1,224 @@
/* 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