diff options
Diffstat (limited to 'mit-pthreads/machdep/engine-alpha-osf1.h')
| -rw-r--r-- | mit-pthreads/machdep/engine-alpha-osf1.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/engine-alpha-osf1.h b/mit-pthreads/machdep/engine-alpha-osf1.h new file mode 100644 index 00000000000..fdf374ccc44 --- /dev/null +++ b/mit-pthreads/machdep/engine-alpha-osf1.h @@ -0,0 +1,110 @@ +/* ==== machdep.h ============================================================ + * Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and + * Ken Raeburn (raeburn@mit.edu). + * + * $Id$ + * + */ + +#ifndef sigwait +#define sigwait __bogus_osf1_sigwait +#endif + +#include <unistd.h> +#include <setjmp.h> +#include <sys/time.h> +#include <sys/cdefs.h> + +#undef sigwait + +/* The first machine dependent functions are the SEMAPHORES needing + the test and set instruction. + + On the Alpha, the actual values here are irrelevant; they just have + to be different. */ +#define SEMAPHORE_CLEAR 0 +#define SEMAPHORE_SET 1 + +#if 0 +#define SEMAPHORE_TEST_AND_SET(lock) \ +({ int *_sem_lock = (lock), locked, old; \ + asm ("mb" : : : "memory"); \ + do { asm ("ldl_l %0,%1" : "=r" (old) : "m" (*_sem_lock)); \ + /* ?? if (old != SEMAPHORE_CLEAR) break; */ \ + asm ("stl_c %0,%1" : "=r" (locked), "=m" (*_sem_lock) \ + : "0" (SEMAPHORE_SET)); \ + } while (!locked); \ + asm ("mb" : : : "memory"); \ + old == SEMAPHORE_CLEAR; }) + +#define SEMAPHORE_RESET(lock) \ +({ int *_sem_lock = (lock); \ + *_sem_lock = SEMAPHORE_CLEAR; \ + asm ("mb" : : : "memory"); }) +#endif + +/* + * New types + */ +typedef int semaphore; + +/* + * sigset_t macros + */ +#define SIG_ANY(sig) (sig) + +/* + * New Strutures + */ +struct machdep_pthread { + void *(*start_routine)(void *); + void *start_argument; + void *machdep_stack; + struct itimerval machdep_timer; + jmp_buf machdep_state; +}; + +/* + * Static machdep_pthread initialization values. + * For initial thread only. + */ +#define MACHDEP_PTHREAD_INIT \ + { NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, 0 } + +/* + * Minimum stack size + */ +#define PTHREAD_STACK_MIN 2048 + +/* + * Some fd flag defines that are necessary to distinguish between posix + * behavior and bsd4.3 behavior. + */ +#define __FD_NONBLOCK O_NONBLOCK + +/* + * New functions + */ + +__BEGIN_DECLS + +#if defined(PTHREAD_KERNEL) + +#define __machdep_stack_get(x) (x)->machdep_stack +#define __machdep_stack_set(x, y) (x)->machdep_stack = y +#define __machdep_stack_repl(x, y) \ +{ \ + if (stack = __machdep_stack_get(x)) { \ + __machdep_stack_free(stack); \ + } \ + __machdep_stack_set(x, y); \ +} + +void * __machdep_stack_alloc __P_((size_t)); +void __machdep_stack_free __P_((void *)); + +int machdep_save_state __P_((void)); + +#endif + +__END_DECLS |