1 31cf0ab1 2004-12-28 devnull #include "threadimpl.h"
 2 31cf0ab1 2004-12-28 devnull 
 3 cea10000 2005-05-01 devnull #include "BSD.c"
 4 4753f069 2005-01-17 devnull 
 5 31cf0ab1 2004-12-28 devnull /*
 6 d54ead7f 2004-12-28 devnull  * FreeBSD 4 and earlier needs the context functions.
 7 d54ead7f 2004-12-28 devnull  */
 8 d54ead7f 2004-12-28 devnull void
 9 d54ead7f 2004-12-28 devnull makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
10 d54ead7f 2004-12-28 devnull {
11 d54ead7f 2004-12-28 devnull 	int *sp;
12 31cf0ab1 2004-12-28 devnull 
13 d54ead7f 2004-12-28 devnull 	sp = (int*)ucp->uc_stack.ss_sp+ucp->uc_stack.ss_size/4;
14 d54ead7f 2004-12-28 devnull 	sp -= argc;
15 d54ead7f 2004-12-28 devnull 	memmove(sp, &argc+1, argc*sizeof(int));
16 d54ead7f 2004-12-28 devnull 	*--sp = 0;		/* return address */
17 d54ead7f 2004-12-28 devnull 	ucp->uc_mcontext.mc_eip = (long)func;
18 d54ead7f 2004-12-28 devnull 	ucp->uc_mcontext.mc_esp = (int)sp;
19 d54ead7f 2004-12-28 devnull }
20 d54ead7f 2004-12-28 devnull 
21 d54ead7f 2004-12-28 devnull extern int getmcontext(mcontext_t*);
22 d54ead7f 2004-12-28 devnull extern int setmcontext(mcontext_t*);
23 d54ead7f 2004-12-28 devnull 
24 d54ead7f 2004-12-28 devnull int
25 d54ead7f 2004-12-28 devnull getcontext(ucontext_t *uc)
26 d54ead7f 2004-12-28 devnull {
27 d54ead7f 2004-12-28 devnull 	return getmcontext(&uc->uc_mcontext);
28 d54ead7f 2004-12-28 devnull }
29 d54ead7f 2004-12-28 devnull 
30 d54ead7f 2004-12-28 devnull void
31 d54ead7f 2004-12-28 devnull setcontext(ucontext_t *uc)
32 d54ead7f 2004-12-28 devnull {
33 d54ead7f 2004-12-28 devnull 	setmcontext(&uc->uc_mcontext);
34 d54ead7f 2004-12-28 devnull }
35 d54ead7f 2004-12-28 devnull 
36 d54ead7f 2004-12-28 devnull int
37 d54ead7f 2004-12-28 devnull swapcontext(ucontext_t *oucp, ucontext_t *ucp)
38 d54ead7f 2004-12-28 devnull {
39 d54ead7f 2004-12-28 devnull 	if(getcontext(oucp) == 0)
40 d54ead7f 2004-12-28 devnull 		setcontext(ucp);
41 d54ead7f 2004-12-28 devnull 	return 0;
42 d54ead7f 2004-12-28 devnull }
43 d54ead7f 2004-12-28 devnull 
44 b20b42b8 2005-08-10 devnull void
45 b20b42b8 2005-08-10 devnull _pthreadinit(void)
46 b20b42b8 2005-08-10 devnull {
47 b20b42b8 2005-08-10 devnull 	__isthreaded = 1;
48 b20b42b8 2005-08-10 devnull 	signal(SIGUSR2, sigusr2handler);
49 b20b42b8 2005-08-10 devnull }