int main (int argc, char **argv) { runtime_initsig (0); runtime_args (argc, (byte **) argv); runtime_osinit (); runtime_schedinit (); __go_go (mainstart, NULL); runtime_mstart (runtime_m ()); abort (); }
// 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; }