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/* ==== machdep.h ============================================================
* Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
*
*/
#include <unistd.h>
#include <setjmp.h>
#include <sys/time.h>
/*
* Stuff for compiling
*/
#if defined(__GNUC__)
#if defined(__cplusplus)
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS };
#else
#define __BEGIN_DECLS
#define __END_DECLS
#if !defined(__STDC__)
#define const __const
#define inline __inline
#define signed __signed
#define volatile __volatile
#endif
#endif
#else /* !__GNUC__ */
#define __BEGIN_DECLS
#define __END_DECLS
#define const
#define inline
#define signed
#define volatile
#endif
/*
* The first machine dependent functions are the SEMAPHORES
* needing the test and set instruction.
*
* Note: The set and clear defines are backwards.
*/
#define SEMAPHORE_CLEAR { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
#define SEMAPHORE_SET 0
#define SEMAPHORE_TEST_AND_SET(lock) \
({ \
long real_addr; \
long temp; \
\
real_addr = ((long)((*lock) + 15) & ~15); \
\
__asm__ volatile("ldcwx %%r0(%2),%0" \
:"=r" (temp) \
:"0" (temp),"r" (real_addr)); \
temp ? 0 : 1; \
})
#define SEMAPHORE_RESET(lock) \
({ \
char *real_addr; \
\
real_addr = (char*)((long)((*lock) + 15) & ~15); \
*real_addr = 0xff; \
})
/*
* New types
* The semaphore is really 16 bytes but must be aligened on a 16 byte
* boundary. By specifing 31 bytes the macros can frob it correctly.
*/
typedef char semaphore[31];
/*
* Macros for sigset_t
*/
#define SIGMAX 30
/* see hpux-9.03/__signal.h for SIG_ANY */
/*
* New Strutures
*/
struct machdep_pthread {
void *(*start_routine)(void *);
void *start_argument;
void *machdep_stack;
struct itimerval machdep_timer;
jmp_buf machdep_state;
/* long machdep_state[_JBLEN]; */
};
/*
* 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 4096
/*
* Some fd flag defines that are necessary to distinguish between posix
* behavior and bsd4.3 behavior.
*/
#define __FD_NONBLOCK O_NONBLOCK
/*
* page size
*/
#define getpagesize() 4096
/*
* 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
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