diff options
Diffstat (limited to 'sys/i386/i386')
| -rw-r--r-- | sys/i386/i386/prof_machdep.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/sys/i386/i386/prof_machdep.c b/sys/i386/i386/prof_machdep.c index a6b4a9a24e56..9c71f49f14fe 100644 --- a/sys/i386/i386/prof_machdep.c +++ b/sys/i386/i386/prof_machdep.c @@ -67,6 +67,20 @@ static int cputime_prof_active; #endif /* GUPROF */ #ifdef __GNUCLIKE_ASM +#if defined(SMP) && defined(GUPROF) +#define MPLOCK " \n\ + movl $1,%edx \n\ +9: \n\ + xorl %eax,%eax \n\ + lock \n\ + cmpxchgl %edx,mcount_lock \n\ + jne 9b \n" +#define MPUNLOCK "movl $0,mcount_lock \n" +#else /* !(SMP && GUPROF) */ +#define MPLOCK +#define MPUNLOCK +#endif /* SMP && GUPROF */ + __asm(" \n\ GM_STATE = 0 \n\ GMON_PROF_OFF = 3 \n\ @@ -110,8 +124,10 @@ __mcount: \n\ pushfl \n\ pushl %eax \n\ pushl %edx \n\ - cli \n\ - call mcount \n\ + cli \n" + MPLOCK " \n\ + call mcount \n" + MPUNLOCK " \n\ addl $8,%esp \n\ popfl \n\ .mcount_exit: \n\ @@ -155,8 +171,10 @@ GMON_PROF_HIRES = 4 \n\ movl 8(%esp),%eax \n\ pushfl \n\ pushl %eax \n\ - cli \n\ - call mexitcount \n\ + cli \n" + MPLOCK " \n\ + call mexitcount \n" + MPUNLOCK " \n\ addl $4,%esp \n\ popfl \n\ popl %eax \n\ |