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/* Copyright (C) 2014 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <string.h>
#ifdef SIGNALS
#include <signal.h>
#include <unistd.h>
#endif
/* NOP instruction: must have the same size as the breakpoint
instruction. */
#if defined(__s390__) || defined(__s390x__)
#define NOP asm("nopr 0")
#else
#define NOP asm("nop")
#endif
/* Buffer holding the breakpoint instruction. */
unsigned char buffer[16];
volatile unsigned char *addr_bp;
volatile unsigned char *addr_after_bp;
int counter = 0;
void
test (void)
{
NOP;
NOP;
NOP;
NOP; /* write permanent bp here */
NOP; /* after permanent bp */
NOP;
NOP;
NOP;
NOP;
NOP;
counter++;
}
void
setup (void)
{
memcpy (buffer, (void *) addr_bp, addr_after_bp - addr_bp);
}
void
test_basics (void)
{
test (); /* for SIGTRAP */
test (); /* for breakpoint once */
test (); /* for breakpoint twice */
test (); /* for disabled bp SIGTRAP */
test (); /* for breakpoint thrice */
}
void
test_next (void)
{
test (); /* for next */
counter = 0; /* after next */
}
#ifdef SIGNALS
static void
test_signal_handler (int sig)
{
}
void
test_signal_with_handler (void)
{
signal (SIGUSR1, test_signal_handler);
test ();
}
void
test_signal_no_handler (void)
{
signal (SIGUSR1, SIG_IGN);
test ();
}
static void
test_signal_nested_handler ()
{
test ();
}
void
test_signal_nested_done (void)
{
}
void
test_signal_nested (void)
{
counter = 0;
signal (SIGALRM, test_signal_nested_handler);
alarm (1);
test ();
test_signal_nested_done ();
}
#endif
int
main (void)
{
setup ();
test_basics ();
test_next ();
#ifdef SIGNALS
test_signal_nested ();
test_signal_with_handler ();
test_signal_no_handler ();
#endif
return 0;
}
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