engine-powerpc-netbsd.h
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上传日期:2007-04-14
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文件大小:3k
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MySQL数据库
开发平台:
Visual C++
- /* ==== machdep.h ============================================================
- * Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and
- * Ken Raeburn (raeburn@mit.edu).
- *
- * engine-alpha-osf1.h,v 1.4.4.1 1995/12/13 05:41:42 proven Exp
- *
- */
- #include <unistd.h>
- #include <setjmp.h>
- #include <sys/time.h>
- #include <sys/cdefs.h>
- #include <sys/signal.h> /* for _NSIG */
- /*
- * The first machine dependent functions are the SEMAPHORES
- * needing the test and set instruction.
- */
- #define SEMAPHORE_CLEAR 0
- #define SEMAPHORE_SET 0xffff
- #define SEMAPHORE_TEST_AND_SET(lock)
- ({
- volatile long t1, temp = SEMAPHORE_SET;
- __asm__ volatile(
- "1: lwarx %0,0,%1;
- cmpwi %0, 0;
- bne 2f;
- stwcx. %2,0,%1;
- bne- 1b;
- 2: "
- :"=r" (t1)
- :"m" (lock), "r" (temp));
- t1;
- })
- #define SEMAPHORE_RESET(lock) *lock = SEMAPHORE_CLEAR
- /*
- * New types
- */
- typedef int semaphore;
- /*
- * sigset_t macros
- */
- #define SIG_ANY(sig) (sig)
- #define SIGMAX (_NSIG-1)
- /*
- * New Strutures
- */
- struct machdep_pthread {
- void *(*start_routine)(void *);
- void *start_argument;
- void *machdep_stack;
- struct itimerval machdep_timer;
- jmp_buf machdep_istate;
- unsigned long machdep_fstate[66];
- /* 64-bit fp regs 0-31 + fpscr */
- /* We pretend the fpscr is 64 bits */
- };
- /*
- * Static machdep_pthread initialization values.
- * For initial thread only.
- */
- #define MACHDEP_PTHREAD_INIT
- { NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, { 0 }, { 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);
- }
- int machdep_save_state(void);
- void __machdep_save_fp_state(unsigned long *);
- void __machdep_restore_fp_state(unsigned long *);
- void *__machdep_stack_alloc(size_t);
- void __machdep_stack_free(void *);
- #endif
- __END_DECLS