// Called to start an M.
void*
runtime_mstart(void* mp)
{
m = (M*)mp;
g = m->g0;
g->entry = nil;
g->param = nil;
// Record top of stack for use by mcall.
// Once we call schedule we're never coming back,
// so other calls can reuse this stack space.
#ifdef USING_SPLIT_STACK
__splitstack_getcontext(&g->stack_context[0]);
#else
g->gcinitial_sp = ∓
g->gcstack_size = StackMin;
g->gcnext_sp = ∓
#endif
getcontext(&g->context);
if(g->entry != nil) {
// Got here from mcall.
void (*pfn)(G*) = (void (*)(G*))g->entry;
G* gp = (G*)g->param;
pfn(gp);
*(int*)0x21 = 0x21;
}
runtime_minit();
schedule(nil);
return nil;
}
// Called to start an M.
void*
runtime_mstart(void* mp)
{
m = (M*)mp;
g = m->g0;
initcontext();
g->entry = nil;
g->param = nil;
// Record top of stack for use by mcall.
// Once we call schedule we're never coming back,
// so other calls can reuse this stack space.
#ifdef USING_SPLIT_STACK
__splitstack_getcontext(&g->stack_context[0]);
#else
g->gcinitial_sp = ∓
// Setting gcstack_size to 0 is a marker meaning that gcinitial_sp
// is the top of the stack, not the bottom.
g->gcstack_size = 0;
g->gcnext_sp = ∓
#endif
getcontext(&g->context);
if(g->entry != nil) {
// Got here from mcall.
void (*pfn)(G*) = (void (*)(G*))g->entry;
G* gp = (G*)g->param;
pfn(gp);
*(int*)0x21 = 0x21;
}
runtime_minit();
#ifdef USING_SPLIT_STACK
{
int dont_block_signals = 0;
__splitstack_block_signals(&dont_block_signals, nil);
}
#endif
// Install signal handlers; after minit so that minit can
// prepare the thread to be able to handle the signals.
if(m == &runtime_m0)
runtime_initsig();
schedule(nil);
return nil;
}
