diff options
| author | briggs <briggs@cvs.openbsd.org> | 1997-04-13 17:13:10 +0000 |
|---|---|---|
| committer | briggs <briggs@cvs.openbsd.org> | 1997-04-13 17:13:10 +0000 |
| commit | 091aa076e3981a6d671f839cff32f29a3070338a (patch) | |
| tree | 88fbe8daa30529063188a046dcbd6474548798e3 /lib/libpthread/arch/m68k/machdep.h | |
| parent | 28b9c4b09d13871c3b25ccaf4e08ffd6154645a8 (diff) | |
Initial support for pthreads on m68k from
David Leonard <david.leonard@it.uq.edu.au>.
Diffstat (limited to 'lib/libpthread/arch/m68k/machdep.h')
| -rw-r--r-- | lib/libpthread/arch/m68k/machdep.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/libpthread/arch/m68k/machdep.h b/lib/libpthread/arch/m68k/machdep.h new file mode 100644 index 00000000000..a63e77de0d3 --- /dev/null +++ b/lib/libpthread/arch/m68k/machdep.h @@ -0,0 +1,49 @@ +/* $OpenBSD */ + +/* ==== machdep.h ============================================================ + * Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu + * + * $ I d: engine-m68000-netbsd.h,v 1.51 1994/11/08 15:39:15 proven Exp $ + * + */ +#include <unistd.h> +#include <setjmp.h> +#include <sys/time.h> + +/* + * The first machine dependent functions are the SEMAPHORES + * needing the test and set instruction. + */ +#define SEMAPHORE_CLEAR 0 +#define SEMAPHORE_SET 0x80; + +#define SEMAPHORE_TEST_AND_SET(lock) \ +({ \ + volatile long temp = SEMAPHORE_CLEAR; \ + __asm__ volatile( \ + "tas %2; bpl 0f; movl #1,%0; 0:" \ + :"=r" (temp) \ + :"0" (temp),"m" (*lock)); \ + temp; \ +}) + +#define SEMAPHORE_RESET(lock) *lock = SEMAPHORE_CLEAR + +/* + * Min pthread stacksize + */ +#define PTHREAD_STACK_MIN 1024 + +/* + * New functions + */ + +__BEGIN_DECLS + +#if defined(PTHREAD_KERNEL) + +int machdep_save_state __P((void)); + +#endif + +__END_DECLS |