mirror of
https://github.com/golang/go
synced 2024-11-20 09:44:45 -07:00
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "runtime.h"
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#include "defs_GOOS_GOARCH.h"
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#include "os_GOOS.h"
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void
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runtime·dumpregs(Context *r)
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{
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runtime·printf("eax %x\n", r->Eax);
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runtime·printf("ebx %x\n", r->Ebx);
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runtime·printf("ecx %x\n", r->Ecx);
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runtime·printf("edx %x\n", r->Edx);
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runtime·printf("edi %x\n", r->Edi);
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runtime·printf("esi %x\n", r->Esi);
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runtime·printf("ebp %x\n", r->Ebp);
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runtime·printf("esp %x\n", r->Esp);
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runtime·printf("eip %x\n", r->Eip);
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runtime·printf("eflags %x\n", r->EFlags);
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runtime·printf("cs %x\n", r->SegCs);
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runtime·printf("fs %x\n", r->SegFs);
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runtime·printf("gs %x\n", r->SegGs);
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}
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uint32
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runtime·sighandler(ExceptionRecord *info, Context *r, G *gp)
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{
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bool crash;
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uintptr *sp;
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switch(info->ExceptionCode) {
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case EXCEPTION_BREAKPOINT:
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r->Eip--; // because 8l generates 2 bytes for INT3
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return 1;
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}
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if(gp != nil && runtime·issigpanic(info->ExceptionCode)) {
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// Make it look like a call to the signal func.
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// Have to pass arguments out of band since
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// augmenting the stack frame would break
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// the unwinding code.
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gp->sig = info->ExceptionCode;
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gp->sigcode0 = info->ExceptionInformation[0];
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gp->sigcode1 = info->ExceptionInformation[1];
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gp->sigpc = r->Eip;
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// Only push runtime·sigpanic if r->eip != 0.
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// If r->eip == 0, probably panicked because of a
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// call to a nil func. Not pushing that onto sp will
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// make the trace look like a call to runtime·sigpanic instead.
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// (Otherwise the trace will end at runtime·sigpanic and we
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// won't get to see who faulted.)
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if(r->Eip != 0) {
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sp = (uintptr*)r->Esp;
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*--sp = r->Eip;
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r->Esp = (uintptr)sp;
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}
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r->Eip = (uintptr)runtime·sigpanic;
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return 0;
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}
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if(runtime·panicking) // traceback already printed
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runtime·exit(2);
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runtime·panicking = 1;
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runtime·printf("Exception %x %p %p\n", info->ExceptionCode,
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info->ExceptionInformation[0], info->ExceptionInformation[1]);
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runtime·printf("PC=%x\n", r->Eip);
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if(m->lockedg != nil && m->ncgo > 0 && gp == m->g0) {
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runtime·printf("signal arrived during cgo execution\n");
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gp = m->lockedg;
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}
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runtime·printf("\n");
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if(runtime·gotraceback(&crash)){
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runtime·traceback(r->Eip, r->Esp, 0, gp);
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runtime·tracebackothers(gp);
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runtime·dumpregs(r);
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}
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if(crash)
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runtime·crash();
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runtime·exit(2);
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return 0;
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}
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void
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runtime·sigenable(uint32 sig)
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{
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USED(sig);
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}
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void
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runtime·sigdisable(uint32 sig)
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{
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USED(sig);
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}
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void
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runtime·dosigprof(Context *r, G *gp)
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{
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runtime·sigprof((uint8*)r->Eip, (uint8*)r->Esp, nil, gp);
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}
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