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author | Michael Stapelberg <michael@stapelberg.de> | 2013-03-23 11:28:53 +0100 |
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committer | Michael Stapelberg <michael@stapelberg.de> | 2013-03-23 11:28:53 +0100 |
commit | b39e15dde5ec7b96c15da9faf4ab5892501c1aae (patch) | |
tree | 718cede1f6ca97d082c6c40b7dc3f4f6148253c0 /src/pkg/runtime/signal_freebsd_arm.c | |
parent | 04b08da9af0c450d645ab7389d1467308cfc2db8 (diff) | |
download | golang-upstream/1.1_hg20130323.tar.gz |
Imported Upstream version 1.1~hg20130323upstream/1.1_hg20130323
Diffstat (limited to 'src/pkg/runtime/signal_freebsd_arm.c')
-rw-r--r-- | src/pkg/runtime/signal_freebsd_arm.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/src/pkg/runtime/signal_freebsd_arm.c b/src/pkg/runtime/signal_freebsd_arm.c deleted file mode 100644 index 50c3221bb..000000000 --- a/src/pkg/runtime/signal_freebsd_arm.c +++ /dev/null @@ -1,193 +0,0 @@ -// Copyright 2012 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_GOOS_GOARCH.h" -#include "signals_GOOS.h" -#include "os_GOOS.h" - -#define r0 __gregs[0] -#define r1 __gregs[1] -#define r2 __gregs[2] -#define r3 __gregs[3] -#define r4 __gregs[4] -#define r5 __gregs[5] -#define r6 __gregs[6] -#define r7 __gregs[7] -#define r8 __gregs[8] -#define r9 __gregs[9] -#define r10 __gregs[10] -#define r11 __gregs[11] -#define r12 __gregs[12] -#define r13 __gregs[13] -#define r14 __gregs[14] -#define r15 __gregs[15] -#define cpsr __gregs[16] - -void -runtime·dumpregs(Mcontext *r) -{ - runtime·printf("r0 %x\n", r->r0); - runtime·printf("r1 %x\n", r->r1); - runtime·printf("r2 %x\n", r->r2); - runtime·printf("r3 %x\n", r->r3); - runtime·printf("r4 %x\n", r->r4); - runtime·printf("r5 %x\n", r->r5); - runtime·printf("r6 %x\n", r->r6); - runtime·printf("r7 %x\n", r->r7); - runtime·printf("r8 %x\n", r->r8); - runtime·printf("r9 %x\n", r->r9); - runtime·printf("r10 %x\n", r->r10); - runtime·printf("fp %x\n", r->r11); - runtime·printf("ip %x\n", r->r12); - runtime·printf("sp %x\n", r->r13); - runtime·printf("lr %x\n", r->r14); - runtime·printf("pc %x\n", r->r15); - runtime·printf("cpsr %x\n", r->cpsr); -} - -extern void runtime·sigtramp(void); - -typedef struct sigaction { - union { - void (*__sa_handler)(int32); - void (*__sa_sigaction)(int32, Siginfo*, void *); - } __sigaction_u; /* signal handler */ - int32 sa_flags; /* see signal options below */ - Sigset sa_mask; /* signal mask to apply */ -} Sigaction; - -void -runtime·sighandler(int32 sig, Siginfo *info, void *context, G *gp) -{ - Ucontext *uc; - Mcontext *r; - SigTab *t; - - uc = context; - r = &uc->uc_mcontext; - - if(sig == SIGPROF) { - runtime·sigprof((uint8*)r->r15, (uint8*)r->r13, (uint8*)r->r14, gp); - return; - } - - t = &runtime·sigtab[sig]; - if(info->si_code != SI_USER && (t->flags & SigPanic)) { - if(gp == nil || gp == m->g0) - goto Throw; - // 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->r15; - - // Only push runtime·sigpanic if r->mc_rip != 0. - // If r->mc_rip == 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->r15 != 0) - r->r14 = r->r15; - // In case we are panicking from external C code - r->r10 = (uintptr)gp; - r->r9 = (uintptr)m; - r->r15 = (uintptr)runtime·sigpanic; - return; - } - - if(info->si_code == SI_USER || (t->flags & SigNotify)) - if(runtime·sigsend(sig)) - return; - if(t->flags & SigKill) - runtime·exit(2); - if(!(t->flags & SigThrow)) - return; - -Throw: - runtime·startpanic(); - - 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->r15); - if(m->lockedg != nil && m->ncgo > 0 && gp == m->g0) { - runtime·printf("signal arrived during cgo execution\n"); - gp = m->lockedg; - } - runtime·printf("\n"); - - if(runtime·gotraceback()){ - runtime·traceback((void*)r->r15, (void*)r->r13, (void*)r->r14, gp); - runtime·tracebackothers(gp); - runtime·printf("\n"); - runtime·dumpregs(r); - } - -// breakpoint(); - runtime·exit(2); -} - -void -runtime·signalstack(byte *p, int32 n) -{ - Sigaltstack st; - - st.ss_sp = (uint8*)p; - st.ss_size = n; - st.ss_flags = 0; - if(p == nil) - st.ss_flags = SS_DISABLE; - runtime·sigaltstack(&st, nil); -} - -void -runtime·setsig(int32 i, void (*fn)(int32, Siginfo*, void*, G*), bool restart) -{ - Sigaction sa; - - // If SIGHUP handler is SIG_IGN, assume running - // under nohup and do not set explicit handler. - if(i == SIGHUP) { - runtime·memclr((byte*)&sa, sizeof sa); - runtime·sigaction(i, nil, &sa); - if(sa.__sigaction_u.__sa_sigaction == SIG_IGN) - return; - } - - runtime·memclr((byte*)&sa, sizeof sa); - sa.sa_flags = SA_SIGINFO|SA_ONSTACK; - if(restart) - sa.sa_flags |= SA_RESTART; - sa.sa_mask.__bits[0] = ~(uint32)0; - sa.sa_mask.__bits[1] = ~(uint32)0; - sa.sa_mask.__bits[2] = ~(uint32)0; - sa.sa_mask.__bits[3] = ~(uint32)0; - if (fn == runtime·sighandler) - fn = (void*)runtime·sigtramp; - sa.__sigaction_u.__sa_sigaction = (void*)fn; - runtime·sigaction(i, &sa, nil); -} - -void -runtime·checkgoarm(void) -{ - // TODO(minux) -} - -#pragma textflag 7 -int64 -runtime·cputicks(void) -{ - // Currently cputicks() is used in blocking profiler and to seed runtime·fastrand1(). - // runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler. - // TODO: need more entropy to better seed fastrand1. - return runtime·nanotime(); -} |