// 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. package runtime import "unsafe" type sigTabT struct { flags int32 name string } var sigtable = [...]sigTabT{ /* 0 */ {0, "SIGNONE: no trap"}, /* 1 */ {_SigNotify + _SigKill, "SIGHUP: terminal line hangup"}, /* 2 */ {_SigNotify + _SigKill, "SIGINT: interrupt"}, /* 3 */ {_SigNotify + _SigThrow, "SIGQUIT: quit"}, /* 4 */ {_SigThrow, "SIGILL: illegal instruction"}, /* 5 */ {_SigThrow, "SIGTRAP: trace trap"}, /* 6 */ {_SigNotify + _SigThrow, "SIGABRT: abort"}, /* 7 */ {_SigThrow, "SIGEMT: emulate instruction executed"}, /* 8 */ {_SigPanic, "SIGFPE: floating-point exception"}, /* 9 */ {0, "SIGKILL: kill"}, /* 10 */ {_SigPanic, "SIGBUS: bus error"}, /* 11 */ {_SigPanic, "SIGSEGV: segmentation violation"}, /* 12 */ {_SigThrow, "SIGSYS: bad system call"}, /* 13 */ {_SigNotify, "SIGPIPE: write to broken pipe"}, /* 14 */ {_SigNotify, "SIGALRM: alarm clock"}, /* 15 */ {_SigNotify + _SigKill, "SIGTERM: termination"}, /* 16 */ {_SigNotify, "SIGURG: urgent condition on socket"}, /* 17 */ {0, "SIGSTOP: stop"}, /* 18 */ {_SigNotify + _SigDefault, "SIGTSTP: keyboard stop"}, /* 19 */ {_SigNotify + _SigDefault, "SIGCONT: continue after stop"}, /* 20 */ {_SigNotify, "SIGCHLD: child status has changed"}, /* 21 */ {_SigNotify + _SigDefault, "SIGTTIN: background read from tty"}, /* 22 */ {_SigNotify + _SigDefault, "SIGTTOU: background write to tty"}, /* 23 */ {_SigNotify, "SIGIO: i/o now possible"}, /* 24 */ {_SigNotify, "SIGXCPU: cpu limit exceeded"}, /* 25 */ {_SigNotify, "SIGXFSZ: file size limit exceeded"}, /* 26 */ {_SigNotify, "SIGVTALRM: virtual alarm clock"}, /* 27 */ {_SigNotify, "SIGPROF: profiling alarm clock"}, /* 28 */ {_SigNotify, "SIGWINCH: window size change"}, /* 29 */ {_SigNotify, "SIGINFO: status request from keyboard"}, /* 30 */ {_SigNotify, "SIGUSR1: user-defined signal 1"}, /* 31 */ {_SigNotify, "SIGUSR2: user-defined signal 2"}, /* 32 */ {_SigNotify, "SIGTHR: reserved"}, } //go:nosplit func sigtrampgo(sig uint32, info *siginfo, ctx unsafe.Pointer) { if sigfwdgo(sig, info, ctx) { return } g := getg() if g == nil { badsignal(uintptr(sig)) return } // If some non-Go code called sigaltstack, adjust. sp := uintptr(unsafe.Pointer(&sig)) if sp < g.m.gsignal.stack.lo || sp >= g.m.gsignal.stack.hi { var st stackt sigaltstack(nil, &st) if st.ss_flags&_SS_DISABLE != 0 { setg(nil) cgocallback(unsafe.Pointer(funcPC(noSignalStack)), noescape(unsafe.Pointer(&sig)), unsafe.Sizeof(sig)) } stsp := uintptr(unsafe.Pointer(st.ss_sp)) if sp < stsp || sp >= stsp+st.ss_size { setg(nil) cgocallback(unsafe.Pointer(funcPC(sigNotOnStack)), noescape(unsafe.Pointer(&sig)), unsafe.Sizeof(sig)) } g.m.gsignal.stack.lo = stsp g.m.gsignal.stack.hi = stsp + st.ss_size g.m.gsignal.stackguard0 = stsp + _StackGuard g.m.gsignal.stackguard1 = stsp + _StackGuard g.m.gsignal.stackAlloc = st.ss_size g.m.gsignal.stktopsp = getcallersp(unsafe.Pointer(&sig)) } setg(g.m.gsignal) sighandler(sig, info, ctx, g) setg(g) }