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/*
* This file was taken from pth-1.40/aclocal.m4
* The original copyright is below.
*
* GNU Pth - The GNU Portable Threads
* Copyright (c) 1999-2001 Ralf S. Engelschall <rse@engelschall.com>
*
* This file is part of GNU Pth, a non-preemptive thread scheduling
* library which can be found at http://www.gnu.org/software/pth/.
*
* This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this file; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA, or contact Marc Lehmann <pcg@goof.com>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
#include <sys/types.h>
#include <signal.h>
#include <unistd.h>
#endif
#if defined(TEST_makecontext)
#include <ucontext.h>
#endif
union alltypes {
long l;
double d;
void *vp;
void (*fp)(void);
char *cp;
};
static volatile char *handler_addr = (char *)0xDEAD;
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
static volatile int handler_done = 0;
void handler(int sig)
{
char garbage[1024];
int i;
auto int dummy;
for (i = 0; i < 1024; i++)
garbage[i] = 'X';
handler_addr = (char *)&dummy;
handler_done = 1;
return;
}
#endif
#if defined(TEST_makecontext)
static ucontext_t uc_handler;
static ucontext_t uc_main;
void handler(void)
{
char garbage[1024];
int i;
auto int dummy;
for (i = 0; i < 1024; i++)
garbage[i] = 'X';
handler_addr = (char *)&dummy;
swapcontext(&uc_handler, &uc_main);
return;
}
#endif
int main(int argc, char *argv[])
{
FILE *f;
char *skaddr;
char *skbuf;
int sksize;
char result[1024];
int i;
sksize = 32768;
skbuf = (char *)malloc(sksize*2+2*sizeof(union alltypes));
if (skbuf == NULL)
exit(1);
for (i = 0; i < sksize*2+2*sizeof(union alltypes); i++)
skbuf[i] = 'A';
skaddr = skbuf+sizeof(union alltypes);
#if defined(TEST_sigstack) || defined(TEST_sigaltstack)
{
struct sigaction sa;
#if defined(TEST_sigstack)
struct sigstack ss;
#elif defined(TEST_sigaltstack) && defined(HAVE_STACK_T)
stack_t ss;
#else
struct sigaltstack ss;
#endif
#if defined(TEST_sigstack)
ss.ss_sp = (void *)(skaddr + sksize);
ss.ss_onstack = 0;
if (sigstack(&ss, NULL) < 0)
exit(1);
#elif defined(TEST_sigaltstack)
ss.ss_sp = (void *)(skaddr + sksize);
ss.ss_size = sksize;
ss.ss_flags = 0;
if (sigaltstack(&ss, NULL) < 0)
exit(1);
#endif
memset((void *)&sa, 0, sizeof(struct sigaction));
sa.sa_handler = handler;
sa.sa_flags = SA_ONSTACK;
sigemptyset(&sa.sa_mask);
sigaction(SIGUSR1, &sa, NULL);
kill(getpid(), SIGUSR1);
while (!handler_done)
/*nop*/;
}
#endif
#if defined(TEST_makecontext)
{
if (getcontext(&uc_handler) != 0)
exit(1);
uc_handler.uc_link = NULL;
uc_handler.uc_stack.ss_sp = (void *)(skaddr + sksize);
uc_handler.uc_stack.ss_size = sksize;
uc_handler.uc_stack.ss_flags = 0;
makecontext(&uc_handler, handler, 1);
swapcontext(&uc_main, &uc_handler);
}
#endif
if (handler_addr == (char *)0xDEAD)
exit(1);
if (handler_addr < skaddr+sksize) {
/* stack was placed into lower area */
if (*(skaddr+sksize) != 'A')
sprintf(result, "(skaddr)+(sksize)-%d,(sksize)-%d",
sizeof(union alltypes), sizeof(union alltypes));
else
strcpy(result, "(skaddr)+(sksize),(sksize)");
}
else {
/* stack was placed into higher area */
if (*(skaddr+sksize*2) != 'A')
sprintf(result, "(skaddr),(sksize)-%d", sizeof(union alltypes));
else
strcpy(result, "(skaddr),(sksize)");
}
printf("%s\n", result);
exit(0);
}
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