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// 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.
package runtime
import "unsafe"
type mOS struct {
waitsemacount uint32
notesig *int8
errstr *byte
}
func closefd(fd int32) int32
//go:noescape
func open(name *byte, mode, perm int32) int32
//go:noescape
func pread(fd int32, buf unsafe.Pointer, nbytes int32, offset int64) int32
//go:noescape
func pwrite(fd int32, buf unsafe.Pointer, nbytes int32, offset int64) int32
func seek(fd int32, offset int64, whence int32) int64
//go:noescape
func exits(msg *byte)
//go:noescape
func brk_(addr unsafe.Pointer) int32
func sleep(ms int32) int32
func rfork(flags int32) int32
//go:noescape
func plan9_semacquire(addr *uint32, block int32) int32
//go:noescape
func plan9_tsemacquire(addr *uint32, ms int32) int32
//go:noescape
func plan9_semrelease(addr *uint32, count int32) int32
//go:noescape
func notify(fn unsafe.Pointer) int32
func noted(mode int32) int32
//go:noescape
func nsec(*int64) int64
//go:noescape
func sigtramp(ureg, msg unsafe.Pointer)
func setfpmasks()
//go:noescape
func tstart_plan9(newm *m)
func errstr() string
type _Plink uintptr
//go:linkname os_sigpipe os.sigpipe
func os_sigpipe() {
throw("too many writes on closed pipe")
}
func sigpanic() {
g := getg()
if !canpanic(g) {
throw("unexpected signal during runtime execution")
}
note := gostringnocopy((*byte)(unsafe.Pointer(g.m.notesig)))
switch g.sig {
case _SIGRFAULT, _SIGWFAULT:
addr := note[index(note, "addr=")+5:]
g.sigcode1 = uintptr(atolwhex(addr))
if g.sigcode1 < 0x1000 || g.paniconfault {
panicmem()
}
print("unexpected fault address ", hex(g.sigcode1), "\n")
throw("fault")
case _SIGTRAP:
if g.paniconfault {
panicmem()
}
throw(note)
case _SIGINTDIV:
panicdivide()
case _SIGFLOAT:
panicfloat()
default:
panic(errorString(note))
}
}
func atolwhex(p string) int64 {
for hasprefix(p, " ") || hasprefix(p, "\t") {
p = p[1:]
}
neg := false
if hasprefix(p, "-") || hasprefix(p, "+") {
neg = p[0] == '-'
p = p[1:]
for hasprefix(p, " ") || hasprefix(p, "\t") {
p = p[1:]
}
}
var n int64
switch {
case hasprefix(p, "0x"), hasprefix(p, "0X"):
p = p[2:]
for ; len(p) > 0; p = p[1:] {
if '0' <= p[0] && p[0] <= '9' {
n = n*16 + int64(p[0]-'0')
} else if 'a' <= p[0] && p[0] <= 'f' {
n = n*16 + int64(p[0]-'a'+10)
} else if 'A' <= p[0] && p[0] <= 'F' {
n = n*16 + int64(p[0]-'A'+10)
} else {
break
}
}
case hasprefix(p, "0"):
for ; len(p) > 0 && '0' <= p[0] && p[0] <= '7'; p = p[1:] {
n = n*8 + int64(p[0]-'0')
}
default:
for ; len(p) > 0 && '0' <= p[0] && p[0] <= '9'; p = p[1:] {
n = n*10 + int64(p[0]-'0')
}
}
if neg {
n = -n
}
return n
}
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