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Viewing changes to src/pkg/runtime/signal_windows_386.c

  • Committer: Package Import Robot
  • Author(s): James Page
  • Date: 2013-08-20 14:06:23 UTC
  • mfrom: (14.1.23 saucy-proposed)
  • Revision ID: package-import@ubuntu.com-20130820140623-b414jfxi3m0qkmrq
Tags: 2:1.1.2-2ubuntu1
https://launchpad.net/bugs/1211749
https://launchpad.net/bugs/1202027
* Merge from Debian unstable (LP: #1211749, #1202027). Remaining changes:
  - 016-armhf-elf-header.patch: Use correct ELF header for armhf binaries.
  - d/control,control.cross: Update Breaks/Replaces for Ubuntu
    versions to ensure smooth upgrades, regenerate control file.

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src/pkg/runtime/signal_windows_386.c
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// 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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        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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        runtime·printf("\n");
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        if(runtime·gotraceback()){
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                runtime·traceback((void*)r->Eip, (void*)r->Esp, 0, m->curg);
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                runtime·tracebackothers(m->curg);
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                runtime·dumpregs(r);
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        }
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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·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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}