Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <thread.h>
#include "threadimpl.h"

/* first argument goes in a register; simplest just to ignore it */
static void
launcherarm(int, void (*f)(void *arg), void *arg)
{
        (*f)(arg);
        threadexits(nil);
}

void
_threadinitstack(Thread *t, void (*f)(void*), void *arg)
{
        ulong *tos;

        tos = (ulong*)&t->stk[t->stksize&~7];
        *--tos = (ulong)arg;
        *--tos = (ulong)f;
        *--tos = 0;     /* first arg to launchermips */
        *--tos = 0;     /* place to store return PC */

        t->sched[JMPBUFPC] = (ulong)launcherarm+JMPBUFDPC;
        t->sched[JMPBUFSP] = (ulong)tos;
}