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mf-runtime.c (__mf_init): Support FreeBSD.

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2009-09-01  Loren J. Rittle  <ljrittle@acm.org>

	* mf-runtime.c (__mf_init): Support FreeBSD.
	Prime mutex which calls calloc upon first lock to avoid deadlock.
	* mf-hooks1.c (__mf_0fn_mmap): Support FreeBSD.
	Ignore red zone allocation request for initial thread's stack.

From-SVN: r151278
This commit is contained in:
Loren J. Rittle 2009-09-01 18:13:18 +00:00 • committed by Loren J. Rittle
parent ab4daaf234
commit f05816a5ee
3 changed files with 18 additions and 0 deletions
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7
libmudflap/ChangeLog
View file

@ -1,3 +1,10 @@
2009-09-01 Loren J. Rittle <ljrittle@acm.org>
* mf-runtime.c (__mf_init): Support FreeBSD.
Prime mutex which calls calloc upon first lock to avoid deadlock.
* mf-hooks1.c (__mf_0fn_mmap): Support FreeBSD.
Ignore red zone allocation request for initial thread's stack.
2009-09-01 Loren J. Rittle <ljrittle@acm.org>
Andreas Schwab <schwab@linux-m68k.org>

5
libmudflap/mf-hooks1.c
View file

@ -321,6 +321,11 @@ WRAPPER(void, free, void *buf)
void *
__mf_0fn_mmap (void *start, size_t l, int prot, int f, int fd, off_t off)
{
#if defined(__FreeBSD__)
if (f == 0x1000 && fd == -1 && prot == 0 && off == 0)
return 0;
#endif /* Ignore red zone allocation request for initial thread's stack. */
return (void *) -1;
}
#endif

6
libmudflap/mf-runtime.c
View file

@ -695,6 +695,12 @@ __mf_init ()
if (LIKELY (__mf_starting_p == 0))
return;
#if defined(__FreeBSD__) && defined(LIBMUDFLAPTH)
pthread_self();
LOCKTH ();
UNLOCKTH ();
#endif /* Prime mutex which calls calloc upon first lock to avoid deadlock. */
/* This initial bootstrap phase requires that __mf_starting_p = 1. */
#ifdef PIC
__mf_resolve_dynamics ();