diff options
Diffstat (limited to 'linuxthreads/sysdeps/mips/pt-machine.h')
| -rw-r--r-- | linuxthreads/sysdeps/mips/pt-machine.h | 50 |
1 files changed, 11 insertions, 39 deletions
diff --git a/linuxthreads/sysdeps/mips/pt-machine.h b/linuxthreads/sysdeps/mips/pt-machine.h index 16e264017d..368235e1a5 100644 --- a/linuxthreads/sysdeps/mips/pt-machine.h +++ b/linuxthreads/sysdeps/mips/pt-machine.h @@ -33,41 +33,11 @@ /* Spinlock implementation; required. */ -#if (_MIPS_ISA >= _MIPS_ISA_MIPS2) - -PT_EI long int -testandset (int *spinlock) -{ - long int ret, temp; - - __asm__ __volatile__ - ("/* Inline spinlock test & set */\n\t" - "1:\n\t" - "ll %0,%3\n\t" - ".set push\n\t" - ".set noreorder\n\t" - "bnez %0,2f\n\t" - " li %1,1\n\t" - ".set pop\n\t" - "sc %1,%2\n\t" - "beqz %1,1b\n" - "2:\n\t" - "/* End spinlock test & set */" - : "=&r" (ret), "=&r" (temp), "=m" (*spinlock) - : "m" (*spinlock) - : "memory"); - - return ret; -} - -#else /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */ - PT_EI long int testandset (int *spinlock) { return _test_and_set (spinlock, 1); } -#endif /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */ /* Get some notion of the current stack. Need not be exactly the top @@ -84,22 +54,24 @@ register char * stack_pointer __asm__ ("$29"); PT_EI int __compare_and_swap (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"); |