gcc/libgo/go/syscall/wait.c
Ian Lance Taylor 4880b994d6 compiler: rationalize external symbol names
Encode all external symbol names using only ASCII alphanumeric
    characters, underscore, and dot.  Use a scheme that can be reliably
    demangled to a somewhat readable version as described in the long
    comment in names.cc.
    
    A minor cleanup discovered during this was that we were treating
    function types as different if one had a NULL parameters_ field and
    another has a non-NULL parameters_ field that has no parameters.  This
    worked because we mangled them slightly differently.  We now mangle
    them the same, so we treat them as equal, as we should anyhow.
    
    Reviewed-on: https://go-review.googlesource.com/89555

	* go.go-torture/execute/names-1.go: New test.

From-SVN: r257033
2018-01-24 23:50:09 +00:00

111 lines
2.0 KiB
C

/* wait.c -- functions for getting wait status values.
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.
We use C code to extract the wait status so that we can easily be
OS-independent. */
#include <stdint.h>
#include <sys/wait.h>
#include "runtime.h"
#ifndef WCOREDUMP
#define WCOREDUMP(status) (((status) & 0200) != 0)
#endif
extern _Bool Exited (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.Exited");
_Bool
Exited (uint32_t *w)
{
return WIFEXITED (*w) != 0;
}
extern _Bool Signaled (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.Signaled");
_Bool
Signaled (uint32_t *w)
{
return WIFSIGNALED (*w) != 0;
}
extern _Bool Stopped (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.Stopped");
_Bool
Stopped (uint32_t *w)
{
return WIFSTOPPED (*w) != 0;
}
extern _Bool Continued (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.Continued");
_Bool
Continued (uint32_t *w)
{
return WIFCONTINUED (*w) != 0;
}
extern _Bool CoreDump (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.CoreDump");
_Bool
CoreDump (uint32_t *w)
{
return WCOREDUMP (*w) != 0;
}
extern int ExitStatus (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.ExitStatus");
int
ExitStatus (uint32_t *w)
{
if (!WIFEXITED (*w))
return -1;
return WEXITSTATUS (*w);
}
extern int Signal (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.Signal");
int
Signal (uint32_t *w)
{
if (!WIFSIGNALED (*w))
return -1;
return WTERMSIG (*w);
}
extern int StopSignal (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.StopSignal");
int
StopSignal (uint32_t *w)
{
if (!WIFSTOPPED (*w))
return -1;
return WSTOPSIG (*w);
}
extern int TrapCause (uint32_t *w)
__asm__ (GOSYM_PREFIX "syscall.WaitStatus.TrapCause");
int
TrapCause (uint32_t *w __attribute__ ((unused)))
{
#ifndef __linux__
return -1;
#else
if (!WIFSTOPPED (*w) || WSTOPSIG (*w) != SIGTRAP)
return -1;
return *w >> 16;
#endif
}