diff options
Diffstat (limited to 'src/pkg/runtime/linux/arm/signal.c')
| -rw-r--r-- | src/pkg/runtime/linux/arm/signal.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/src/pkg/runtime/linux/arm/signal.c b/src/pkg/runtime/linux/arm/signal.c deleted file mode 100644 index 88a84d112..000000000 --- a/src/pkg/runtime/linux/arm/signal.c +++ /dev/null @@ -1,189 +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 "signals.h" -#include "os.h" - -void -runtime·dumpregs(Sigcontext *r) -{ - runtime·printf("trap %x\n", r->trap_no); - runtime·printf("error %x\n", r->error_code); - runtime·printf("oldmask %x\n", r->oldmask); - runtime·printf("r0 %x\n", r->arm_r0); - runtime·printf("r1 %x\n", r->arm_r1); - runtime·printf("r2 %x\n", r->arm_r2); - runtime·printf("r3 %x\n", r->arm_r3); - runtime·printf("r4 %x\n", r->arm_r4); - runtime·printf("r5 %x\n", r->arm_r5); - runtime·printf("r6 %x\n", r->arm_r6); - runtime·printf("r7 %x\n", r->arm_r7); - runtime·printf("r8 %x\n", r->arm_r8); - runtime·printf("r9 %x\n", r->arm_r9); - runtime·printf("r10 %x\n", r->arm_r10); - runtime·printf("fp %x\n", r->arm_fp); - runtime·printf("ip %x\n", r->arm_ip); - runtime·printf("sp %x\n", r->arm_sp); - runtime·printf("lr %x\n", r->arm_lr); - runtime·printf("pc %x\n", r->arm_pc); - runtime·printf("cpsr %x\n", r->arm_cpsr); - runtime·printf("fault %x\n", r->fault_address); -} - -/* - * This assembler routine takes the args from registers, puts them on the stack, - * and calls sighandler(). - */ -extern void runtime·sigtramp(void); -extern void runtime·sigignore(void); // just returns -extern void runtime·sigreturn(void); // calls runtime·sigreturn - -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; - Sigcontext *r; - - uc = context; - r = &uc->uc_mcontext; - - if(sig == SIGPROF) { - runtime·sigprof((uint8*)r->arm_pc, (uint8*)r->arm_sp, (uint8*)r->arm_lr, gp); - return; - } - - if(gp != nil && (runtime·sigtab[sig].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 = info->si_code; - gp->sigcode1 = r->fault_address; - gp->sigpc = r->arm_pc; - - // If this is a leaf function, we do smash LR, - // but we're not going back there anyway. - // Don't bother smashing if r->arm_pc is 0, - // which is probably a call to a nil func: the - // old link register is more useful in the stack trace. - if(r->arm_pc != 0) - r->arm_lr = r->arm_pc; - r->arm_pc = (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->arm_pc); - runtime·printf("\n"); - - if(runtime·gotraceback()){ - runtime·traceback((void*)r->arm_pc, (void*)r->arm_sp, (void*)r->arm_lr, 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 = 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_ONSTACK | SA_SIGINFO | SA_RESTORER; - if(restart) - sa.sa_flags |= SA_RESTART; - sa.sa_mask = ~0ULL; - sa.sa_restorer = (void*)runtime·sigreturn; - if(fn == runtime·sighandler) - fn = (void*)runtime·sigtramp; - sa.sa_handler = fn; - runtime·rt_sigaction(i, &sa, nil, 8); -} - -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(); -} |