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| author | Ulrich Drepper <drepper@redhat.com> | 2002-02-03 02:26:37 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2002-02-03 02:26:37 +0000 |
| commit | 5c1159b6a9303f5c9f93e8e048d52acc630c2a86 (patch) | |
| tree | 2a7f252291a88632101388dd44a6c3786b2f4cb9 /sysdeps/mips | |
| parent | b5ef404e0897450bbe1caaff867d8daf40ba0e35 (diff) | |
| download | glibc-5c1159b6a9303f5c9f93e8e048d52acc630c2a86.tar.gz glibc-5c1159b6a9303f5c9f93e8e048d52acc630c2a86.tar.xz glibc-5c1159b6a9303f5c9f93e8e048d52acc630c2a86.zip | |
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.h | 36 |
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"); |