diff options
Diffstat (limited to 'src/pkg/runtime/darwin/386/signal.c')
| -rw-r--r-- | src/pkg/runtime/darwin/386/signal.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/pkg/runtime/darwin/386/signal.c b/src/pkg/runtime/darwin/386/signal.c deleted file mode 100644 index 29170b669..000000000 --- a/src/pkg/runtime/darwin/386/signal.c +++ /dev/null @@ -1,194 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -#include "runtime.h" -#include "defs.h" -#include "os.h" -#include "signals.h" - -void -runtime·dumpregs(Regs *r) -{ - runtime·printf("eax %x\n", r->eax); - runtime·printf("ebx %x\n", r->ebx); - runtime·printf("ecx %x\n", r->ecx); - runtime·printf("edx %x\n", r->edx); - runtime·printf("edi %x\n", r->edi); - runtime·printf("esi %x\n", r->esi); - runtime·printf("ebp %x\n", r->ebp); - runtime·printf("esp %x\n", r->esp); - runtime·printf("eip %x\n", r->eip); - runtime·printf("eflags %x\n", r->eflags); - runtime·printf("cs %x\n", r->cs); - runtime·printf("fs %x\n", r->fs); - runtime·printf("gs %x\n", r->gs); -} - -String -runtime·signame(int32 sig) -{ - if(sig < 0 || sig >= NSIG) - return runtime·emptystring; - return runtime·gostringnocopy((byte*)runtime·sigtab[sig].name); -} - -void -runtime·sighandler(int32 sig, Siginfo *info, void *context, G *gp) -{ - Ucontext *uc; - Mcontext *mc; - Regs *r; - uintptr *sp; - byte *pc; - - uc = context; - mc = uc->uc_mcontext; - r = &mc->ss; - - if(sig == SIGPROF) { - runtime·sigprof((uint8*)r->eip, (uint8*)r->esp, nil, gp); - return; - } - - if(gp != nil && (runtime·sigtab[sig].flags & SigPanic)) { - // Work around Leopard bug that doesn't set FPE_INTDIV. - // Look at instruction to see if it is a divide. - // Not necessary in Snow Leopard (si_code will be != 0). - if(sig == SIGFPE && info->si_code == 0) { - pc = (byte*)r->eip; - if(pc[0] == 0x66) // 16-bit instruction prefix - pc++; - if(pc[0] == 0xF6 || pc[0] == 0xF7) - info->si_code = FPE_INTDIV; - } - - // Make it look like a call to the signal func. - // Have to pass arguments out of band since - // augmenting the stack frame would break - // the unwinding code. - gp->sig = sig; - gp->sigcode0 = info->si_code; - gp->sigcode1 = (uintptr)info->si_addr; - gp->sigpc = r->eip; - - // Only push runtime·sigpanic if r->eip != 0. - // If r->eip == 0, probably panicked because of a - // call to a nil func. Not pushing that onto sp will - // make the trace look like a call to runtime·sigpanic instead. - // (Otherwise the trace will end at runtime·sigpanic and we - // won't get to see who faulted.) - if(r->eip != 0) { - sp = (uintptr*)r->esp; - *--sp = r->eip; - r->esp = (uintptr)sp; - } - r->eip = (uintptr)runtime·sigpanic; - return; - } - - if(runtime·sigtab[sig].flags & SigQueue) { - if(runtime·sigsend(sig) || (runtime·sigtab[sig].flags & SigIgnore)) - return; - runtime·exit(2); // SIGINT, SIGTERM, etc - } - - if(runtime·panicking) // traceback already printed - runtime·exit(2); - runtime·panicking = 1; - - if(sig < 0 || sig >= NSIG){ - runtime·printf("Signal %d\n", sig); - }else{ - runtime·printf("%s\n", runtime·sigtab[sig].name); - } - - runtime·printf("pc: %x\n", r->eip); - runtime·printf("\n"); - - if(runtime·gotraceback()){ - runtime·traceback((void*)r->eip, (void*)r->esp, 0, gp); - runtime·tracebackothers(gp); - runtime·dumpregs(r); - } - - runtime·exit(2); -} - -void -runtime·sigignore(int32, Siginfo*, void*) -{ -} - -void -runtime·signalstack(byte *p, int32 n) -{ - StackT st; - - st.ss_sp = p; - st.ss_size = n; - st.ss_flags = 0; - runtime·sigaltstack(&st, nil); -} - -static void -sigaction(int32 i, void (*fn)(int32, Siginfo*, void*, G*), bool restart) -{ - Sigaction sa; - - runtime·memclr((byte*)&sa, sizeof sa); - sa.sa_flags = SA_SIGINFO|SA_ONSTACK; - if(restart) - sa.sa_flags |= SA_RESTART; - sa.sa_mask = ~0U; - sa.sa_tramp = (uintptr)runtime·sigtramp; // runtime·sigtramp's job is to call into real handler - sa.__sigaction_u.__sa_sigaction = (uintptr)fn; - runtime·sigaction(i, &sa, nil); -} - -void -runtime·initsig(int32 queue) -{ - int32 i; - void *fn; - - runtime·siginit(); - - for(i = 0; i<NSIG; i++) { - if(runtime·sigtab[i].flags) { - if((runtime·sigtab[i].flags & SigQueue) != queue) - continue; - if(runtime·sigtab[i].flags & (SigCatch | SigQueue)) - fn = runtime·sighandler; - else - fn = runtime·sigignore; - sigaction(i, fn, (runtime·sigtab[i].flags & SigRestart) != 0); - } - } -} - -void -runtime·resetcpuprofiler(int32 hz) -{ - Itimerval it; - - runtime·memclr((byte*)&it, sizeof it); - if(hz == 0) { - runtime·setitimer(ITIMER_PROF, &it, nil); - sigaction(SIGPROF, SIG_IGN, true); - } else { - sigaction(SIGPROF, runtime·sighandler, true); - it.it_interval.tv_sec = 0; - it.it_interval.tv_usec = 1000000 / hz; - it.it_value = it.it_interval; - runtime·setitimer(ITIMER_PROF, &it, nil); - } - m->profilehz = hz; -} - -void -os·sigpipe(void) -{ - sigaction(SIGPIPE, SIG_DFL, false); - runtime·raisesigpipe(); -} |