27 lines
597 B
C
27 lines
597 B
C
|
#include "threadimpl.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
|
||
|
|
{
|
||
|
|
int i, *sp;
|
||
|
|
va_list arg;
|
||
|
|
|
||
|
|
sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4;
|
||
|
|
va_start(arg, argc);
|
||
|
|
for(i=0; i<4 && i<argc; i++)
|
||
|
|
uc->uc_mcontext.gregs[i] = va_arg(arg, uint);
|
||
|
|
va_end(arg);
|
||
|
|
uc->uc_mcontext.gregs[13] = (uint)sp;
|
||
|
|
uc->uc_mcontext.gregs[14] = (uint)fn;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
|
||
|
|
{
|
||
|
|
if(getcontext(oucp) == 0)
|
||
|
|
setcontext(ucp);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|