mirror of
https://github.com/golang/go
synced 2024-10-04 11:11:21 -06:00
519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
// 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 darwin dragonfly freebsd linux netbsd openbsd solaris
|
|
|
|
package runtime
|
|
|
|
func sigpanic() {
|
|
g := getg()
|
|
if !canpanic(g) {
|
|
throw("unexpected signal during runtime execution")
|
|
}
|
|
|
|
switch g.sig {
|
|
case _SIGBUS:
|
|
if g.sigcode0 == _BUS_ADRERR && g.sigcode1 < 0x1000 || g.paniconfault {
|
|
panicmem()
|
|
}
|
|
print("unexpected fault address ", hex(g.sigcode1), "\n")
|
|
throw("fault")
|
|
case _SIGSEGV:
|
|
if (g.sigcode0 == 0 || g.sigcode0 == _SEGV_MAPERR || g.sigcode0 == _SEGV_ACCERR) && g.sigcode1 < 0x1000 || g.paniconfault {
|
|
panicmem()
|
|
}
|
|
print("unexpected fault address ", hex(g.sigcode1), "\n")
|
|
throw("fault")
|
|
case _SIGFPE:
|
|
switch g.sigcode0 {
|
|
case _FPE_INTDIV:
|
|
panicdivide()
|
|
case _FPE_INTOVF:
|
|
panicoverflow()
|
|
}
|
|
panicfloat()
|
|
}
|
|
|
|
if g.sig >= uint32(len(sigtable)) {
|
|
// can't happen: we looked up g.sig in sigtable to decide to call sigpanic
|
|
throw("unexpected signal value")
|
|
}
|
|
panic(errorString(sigtable[g.sig].name))
|
|
}
|
|
|
|
// setsigsegv is used on darwin/arm{,64} to fake a segmentation fault.
|
|
//go:nosplit
|
|
func setsigsegv(pc uintptr) {
|
|
g := getg()
|
|
g.sig = _SIGSEGV
|
|
g.sigpc = pc
|
|
g.sigcode0 = _SEGV_MAPERR
|
|
g.sigcode1 = 0 // TODO: emulate si_addr
|
|
}
|