mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-14 20:28:12 +01:00
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2004 Hewlett-Packard Co
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
#include "compiler.h"
|
|
|
|
#include <signal.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
pid_t self;
|
|
int global[64];
|
|
|
|
int
|
|
func (int arg)
|
|
{
|
|
int sum = 0, i, max, arr[1024];
|
|
|
|
if (arg == 0)
|
|
{
|
|
sum = global[2];
|
|
sum += sum + sum * getppid ();
|
|
return sum;
|
|
}
|
|
else
|
|
{
|
|
max = arg;
|
|
if (max >= 64)
|
|
max = 64;
|
|
|
|
for (i = 0; i < max; ++i)
|
|
arr[i] = func (arg - 1);
|
|
|
|
for (i = 0; i < max; ++i)
|
|
if (arr[i] > 16)
|
|
sum += arr[i];
|
|
else
|
|
sum -= arr[i];
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
int
|
|
bar (int v)
|
|
{
|
|
extern long f (long);
|
|
int arr[1] = { v };
|
|
uintptr_t r;
|
|
|
|
/* This is a vain attempt to use up lots of registers to force
|
|
the frame-chain info to be saved on the memory stack on ia64.
|
|
It happens to work with gcc v3.3.4 and gcc v3.4.1 but perhaps
|
|
not with any other compiler. */
|
|
r = (uintptr_t) malloc(f (arr[0])
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v)
|
|
+ (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + (f (v) + f (v))
|
|
))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
|
|
)))))))))))))))))))))))))))))))))))))))))))))))))))))));
|
|
if (r < 2)
|
|
v = r;
|
|
|
|
kill (self, SIGUSR1); /* tell test-ptrace to start single-stepping */
|
|
v = func (v);
|
|
kill (self, SIGUSR2); /* tell test-ptrace to stop single-stepping */
|
|
return v;
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv UNUSED)
|
|
{
|
|
int val = argc;
|
|
|
|
signal (SIGUSR1, SIG_IGN);
|
|
signal (SIGUSR2, SIG_IGN);
|
|
|
|
self = getpid ();
|
|
|
|
printf ("sum = %d\n", bar (val));
|
|
return 0;
|
|
}
|