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authorUlrich Drepper <drepper@redhat.com>2002-02-03 02:26:37 +0000
committerUlrich Drepper <drepper@redhat.com>2002-02-03 02:26:37 +0000
commit5c1159b6a9303f5c9f93e8e048d52acc630c2a86 (patch)
tree2a7f252291a88632101388dd44a6c3786b2f4cb9 /sysdeps/mips
parentb5ef404e0897450bbe1caaff867d8daf40ba0e35 (diff)
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Update.
2002-02-01 H.J. Lu <hjl@gnu.org> * sysdeps/mips/atomicity.h (exchange_and_add): Use branch likely. (atomic_add): Likewise. (compare_and_swap): Return 0 only when failed to compare. Use branch likely. * sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Use branch likely. 2002-02-03 kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/sh/dl-machine.h (elf_machine_rela): Fix a typo. 2002-02-02 Ulrich Drepper <drepper@redhat.com> * elf/dl-minimal.c (__strsep): New minimal implementation.
Diffstat (limited to 'sysdeps/mips')
-rw-r--r--sysdeps/mips/atomicity.h36
1 files changed, 23 insertions, 13 deletions
diff --git a/sysdeps/mips/atomicity.h b/sysdeps/mips/atomicity.h
index 1fe1b7aebb..4d185075c4 100644
--- a/sysdeps/mips/atomicity.h
+++ b/sysdeps/mips/atomicity.h
@@ -33,11 +33,15 @@ exchange_and_add (volatile uint32_t *mem, int val)
__asm__ __volatile__
("/* Inline exchange & add */\n\t"
+ "ll %0,%3\n"
"1:\n\t"
- "ll %0,%3\n\t"
"addu %1,%4,%0\n\t"
"sc %1,%2\n\t"
- "beqz %1,1b\n\t"
+ ".set push\n\t"
+ ".set noreorder\n\t"
+ "beqzl %1,1b\n\t"
+ " ll %0,%3\n\t"
+ ".set pop\n\t"
"/* End exchange & add */"
: "=&r"(result), "=&r"(tmp), "=m"(*mem)
: "m" (*mem), "r"(val)
@@ -54,11 +58,15 @@ atomic_add (volatile uint32_t *mem, int val)
__asm__ __volatile__
("/* Inline atomic add */\n\t"
+ "ll %0,%2\n"
"1:\n\t"
- "ll %0,%2\n\t"
"addu %0,%3,%0\n\t"
"sc %0,%1\n\t"
- "beqz %0,1b\n\t"
+ ".set push\n\t"
+ ".set noreorder\n\t"
+ "beqzl %0,1b\n\t"
+ " ll %0,%2\n\t"
+ ".set pop\n\t"
"/* End atomic add */"
: "=&r"(result), "=m"(*mem)
: "m" (*mem), "r"(val)
@@ -69,22 +77,24 @@ static inline int
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
- long int ret;
+ long int ret, temp;
__asm__ __volatile__
("/* Inline compare & swap */\n\t"
+ "ll %1,%5\n"
"1:\n\t"
- "ll %0,%4\n\t"
- ".set push\n"
+ ".set push\n\t"
".set noreorder\n\t"
- "bne %0,%2,2f\n\t"
- "move %0,%3\n\t"
- ".set pop\n\t"
- "sc %0,%1\n\t"
- "beqz %0,1b\n"
+ "bne %1,%3,2f\n\t"
+ " move %0,$0\n\t"
+ "move %0,%4\n\t"
+ "sc %0,%2\n\t"
+ "beqzl %0,1b\n\t"
+ " ll %1,%5\n\t"
+ ".set pop\n"
"2:\n\t"
"/* End compare & swap */"
- : "=&r" (ret), "=m" (*p)
+ : "=&r" (ret), "=&r" (temp), "=m" (*p)
: "r" (oldval), "r" (newval), "m" (*p)
: "memory");