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Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S50
1 files changed, 38 insertions, 12 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S
index 9755b7e16..f71cd930d 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_post.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2007, 2008 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
@@ -18,22 +18,34 @@
#include <sysdep.h>
#include <pthread-errnos.h>
+#include <structsem.h>
+#include <lowlevellock.h>
#include "lowlevel-atomic.h"
-#define SYS_gettimeofday __NR_gettimeofday
-#define FUTEX_WAIT 0
-#define FUTEX_WAKE 1
-
.text
.globl __new_sem_post
.type __new_sem_post,@function
.align 5
__new_sem_post:
- INC (@r4, r6)
-
+ mov.l @(VALUE,r4), r2
+0:
+ mov.l .Lmax, r1
+ cmp/eq r1, r2
+ bt/s 3f
+ mov r2, r3
+ mov r3, r5
+ add #1, r5
+ CMPXCHG (r3, @(VALUE,r4), r5, r2)
+ bf 0b
+ mov.l @(NWAITERS,r4), r2
+ tst r2, r2
+ bt 2f
mov #FUTEX_WAKE, r5
+ mov.l @(PRIVATE,r4), r1
+ or r1, r5
+ mov #1, r6
mov #0, r7
mov #SYS_futex, r3
extu.b r3, r3
@@ -42,11 +54,20 @@ __new_sem_post:
cmp/pz r0
bf 1f
+2:
rts
mov #0, r0
1:
- mov #EINVAL, r2
+ bra 4f
+ mov #EINVAL, r2
+
+3:
+ mov #EOVERFLOW, r2
+4:
+ mov.l r12, @-r15
+ mov.l r8, @-r15
+ sts.l pr, @-r15
mova .Lgot3, r0
mov.l .Lgot3, r12
add r0, r12
@@ -55,25 +76,30 @@ __new_sem_post:
mov.l .Lerrno3, r0
stc gbr, r1
mov.l @(r0, r12), r0
- bra .Lexit
- add r1, r0
- .align 2
+ bra .Lexit
+ add r1, r0
+ .align 2
.Lerrno3:
.long errno@GOTTPOFF
.Lexit:
+ mov.l r2, @r0
#else
+ mov r2, r8
mov.l .Lerrloc3, r1
bsrf r1
nop
.Lerrloc3b:
+ mov r8, @r0
#endif
- mov.l r2, @r0
lds.l @r15+, pr
+ mov.l @r15+, r8
mov.l @r15+, r12
rts
mov #-1, r0
.align 2
+.Lmax:
+ .long SEM_VALUE_MAX
.Lgot3:
.long _GLOBAL_OFFSET_TABLE_
#if !USE___THREAD