diff options
Diffstat (limited to 'src/runtime/signal_power64x.c')
-rw-r--r-- | src/runtime/signal_power64x.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/runtime/signal_power64x.c b/src/runtime/signal_power64x.c new file mode 100644 index 000000000..89c5c7848 --- /dev/null +++ b/src/runtime/signal_power64x.c @@ -0,0 +1,137 @@ +// Copyright 2014 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. + +// +build linux +// +build power64 power64le + +#include "runtime.h" +#include "defs_GOOS_GOARCH.h" +#include "os_GOOS.h" +#include "signal_GOOS_GOARCH.h" +#include "signals_GOOS.h" + +void +runtime·dumpregs(Siginfo *info, void *ctxt) +{ + USED(info); USED(ctxt); + runtime·printf("r0 %X\t", SIG_R0(info, ctxt)); + runtime·printf("r1 %X\n", SIG_R1(info, ctxt)); + runtime·printf("r2 %X\t", SIG_R2(info, ctxt)); + runtime·printf("r3 %X\n", SIG_R3(info, ctxt)); + runtime·printf("r4 %X\t", SIG_R4(info, ctxt)); + runtime·printf("r5 %X\n", SIG_R5(info, ctxt)); + runtime·printf("r6 %X\t", SIG_R6(info, ctxt)); + runtime·printf("r7 %X\n", SIG_R7(info, ctxt)); + runtime·printf("r8 %X\t", SIG_R8(info, ctxt)); + runtime·printf("r9 %X\n", SIG_R9(info, ctxt)); + runtime·printf("r10 %X\t", SIG_R10(info, ctxt)); + runtime·printf("r11 %X\n", SIG_R11(info, ctxt)); + runtime·printf("r12 %X\t", SIG_R12(info, ctxt)); + runtime·printf("r13 %X\n", SIG_R13(info, ctxt)); + runtime·printf("r14 %X\t", SIG_R14(info, ctxt)); + runtime·printf("r15 %X\n", SIG_R15(info, ctxt)); + runtime·printf("r16 %X\t", SIG_R16(info, ctxt)); + runtime·printf("r17 %X\n", SIG_R17(info, ctxt)); + runtime·printf("r18 %X\t", SIG_R18(info, ctxt)); + runtime·printf("r19 %X\n", SIG_R19(info, ctxt)); + runtime·printf("r20 %X\t", SIG_R20(info, ctxt)); + runtime·printf("r21 %X\n", SIG_R21(info, ctxt)); + runtime·printf("r22 %X\t", SIG_R22(info, ctxt)); + runtime·printf("r23 %X\n", SIG_R23(info, ctxt)); + runtime·printf("r24 %X\t", SIG_R24(info, ctxt)); + runtime·printf("r25 %X\n", SIG_R25(info, ctxt)); + runtime·printf("r26 %X\t", SIG_R26(info, ctxt)); + runtime·printf("r27 %X\n", SIG_R27(info, ctxt)); + runtime·printf("r28 %X\t", SIG_R28(info, ctxt)); + runtime·printf("r29 %X\n", SIG_R29(info, ctxt)); + runtime·printf("r30 %X\t", SIG_R30(info, ctxt)); + runtime·printf("r31 %X\n", SIG_R31(info, ctxt)); + runtime·printf("pc %X\t", SIG_PC(info, ctxt)); + runtime·printf("ctr %X\n", SIG_CTR(info, ctxt)); + runtime·printf("link %X\t", SIG_LINK(info, ctxt)); + runtime·printf("xer %X\n", SIG_XER(info, ctxt)); + runtime·printf("ccr %X\t", SIG_CCR(info, ctxt)); + runtime·printf("trap %X\n", SIG_TRAP(info, ctxt)); +} + +void +runtime·sighandler(int32 sig, Siginfo *info, void *ctxt, G *gp) +{ + SigTab *t; + bool crash; + + if(sig == SIGPROF) { + runtime·sigprof((uint8*)SIG_PC(info, ctxt), (uint8*)SIG_SP(info, ctxt), (uint8*)SIG_LINK(info, ctxt), gp, g->m); + return; + } + t = &runtime·sigtab[sig]; + if(SIG_CODE0(info, ctxt) != SI_USER && (t->flags & SigPanic)) { + // 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 = SIG_CODE0(info, ctxt); + gp->sigcode1 = SIG_FAULT(info, ctxt); + gp->sigpc = SIG_PC(info, ctxt); + + // We arrange link, and pc to pretend the panicking + // function calls sigpanic directly. + // Always save LINK to stack so that panics in leaf + // functions are correctly handled. This smashes + // the stack frame but we're not going back there + // anyway. + SIG_SP(info, ctxt) -= sizeof(uintptr); + *(uintptr*)SIG_SP(info, ctxt) = SIG_LINK(info, ctxt); + // Don't bother saving PC if it's zero, which is + // probably a call to a nil func: the old link register + // is more useful in the stack trace. + if(gp->sigpc != 0) + SIG_LINK(info, ctxt) = gp->sigpc; + // In case we are panicking from external C code + SIG_R0(info, ctxt) = 0; + SIG_R30(info, ctxt) = (uintptr)gp; + SIG_PC(info, ctxt) = (uintptr)runtime·sigpanic; + return; + } + + if(SIG_CODE0(info, ctxt) == SI_USER || (t->flags & SigNotify)) + if(runtime·sigsend(sig)) + return; + if(t->flags & SigKill) + runtime·exit(2); + if(!(t->flags & SigThrow)) + return; + + g->m->throwing = 1; + g->m->caughtsig = gp; + 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", SIG_PC(info, ctxt)); + if(g->m->lockedg != nil && g->m->ncgo > 0 && gp == g->m->g0) { + runtime·printf("signal arrived during cgo execution\n"); + gp = g->m->lockedg; + } + runtime·printf("\n"); + + if(runtime·gotraceback(&crash)){ + runtime·goroutineheader(gp); + runtime·traceback(SIG_PC(info, ctxt), SIG_SP(info, ctxt), SIG_LINK(info, ctxt), gp); + runtime·tracebackothers(gp); + runtime·printf("\n"); + runtime·dumpregs(info, ctxt); + } + + if(crash) + runtime·crash(); + + runtime·exit(2); +} |