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-rw-r--r--src/runtime/signal_plan9.go57
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diff --git a/src/runtime/signal_plan9.go b/src/runtime/signal_plan9.go
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+// Copyright 2011 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
+
+type sigTabT struct {
+ flags int
+ name string
+}
+
+// Incoming notes are compared against this table using strncmp, so the
+// order matters: longer patterns must appear before their prefixes.
+// There are _SIG constants in os2_plan9.go for the table index of some
+// of these.
+//
+// If you add entries to this table, you must respect the prefix ordering
+// and also update the constant values is os2_plan9.go.
+var sigtable = [...]sigTabT{
+ // Traps that we cannot be recovered.
+ {_SigThrow, "sys: trap: debug exception"},
+ {_SigThrow, "sys: trap: invalid opcode"},
+
+ // We can recover from some memory errors in runtime·sigpanic.
+ {_SigPanic, "sys: trap: fault read"}, // SIGRFAULT
+ {_SigPanic, "sys: trap: fault write"}, // SIGWFAULT
+
+ // We can also recover from math errors.
+ {_SigPanic, "sys: trap: divide error"}, // SIGINTDIV
+ {_SigPanic, "sys: fp:"}, // SIGFLOAT
+
+ // All other traps are normally handled as if they were marked SigThrow.
+ // We mark them SigPanic here so that debug.SetPanicOnFault will work.
+ {_SigPanic, "sys: trap:"}, // SIGTRAP
+
+ // Writes to a closed pipe can be handled if desired, otherwise they're ignored.
+ {_SigNotify, "sys: write on closed pipe"},
+
+ // Other system notes are more serious and cannot be recovered.
+ {_SigThrow, "sys:"},
+
+ // Issued to all other procs when calling runtime·exit.
+ {_SigGoExit, "go: exit "},
+
+ // Kill is sent by external programs to cause an exit.
+ {_SigKill, "kill"},
+
+ // Interrupts can be handled if desired, otherwise they cause an exit.
+ {_SigNotify + _SigKill, "interrupt"},
+ {_SigNotify + _SigKill, "hangup"},
+
+ // Alarms can be handled if desired, otherwise they're ignored.
+ {_SigNotify, "alarm"},
+
+ // Aborts can be handled if desired, otherwise they cause a stack trace.
+ {_SigNotify + _SigThrow, "abort"},
+}