1 #include "threadimpl.h"
2 
3 #include "BSD.c"
4 
5 /*
6  * FreeBSD 4 and earlier needs the context functions.
7  */
8 void
9 makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
10 {
11 	int *sp;
12 
13 	sp = (int*)ucp->uc_stack.ss_sp+ucp->uc_stack.ss_size/4;
14 	sp -= argc;
15 	memmove(sp, &argc+1, argc*sizeof(int));
16 	*--sp = 0;		/* return address */
17 	ucp->uc_mcontext.mc_eip = (long)func;
18 	ucp->uc_mcontext.mc_esp = (int)sp;
19 }
20 
21 int
22 swapcontext(ucontext_t *oucp, ucontext_t *ucp)
23 {
24 	if(getcontext(oucp) == 0)
25 		setcontext(ucp);
26 	return 0;
27 }
28 
29 void
30 _pthreadinit(void)
31 {
32 	__isthreaded = 1;
33 	signal(SIGUSR2, sigusr2handler);
34 }