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