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137 lines
2.3 KiB
C
137 lines
2.3 KiB
C
/* Copyright (C) 2014-2015 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <string.h>
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#ifdef SIGNALS
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#include <signal.h>
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#include <unistd.h>
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#endif
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/* NOP instruction: must have the same size as the breakpoint
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instruction. */
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#if defined(__s390__) || defined(__s390x__)
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#define NOP asm("nopr 0")
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#else
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#define NOP asm("nop")
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#endif
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/* Buffer holding the breakpoint instruction. */
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unsigned char buffer[16];
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volatile unsigned char *addr_bp;
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volatile unsigned char *addr_after_bp;
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int counter = 0;
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void
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test (void)
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{
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NOP;
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NOP;
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NOP;
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NOP; /* write permanent bp here */
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NOP; /* after permanent bp */
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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counter++;
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}
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void
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setup (void)
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{
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memcpy (buffer, (void *) addr_bp, addr_after_bp - addr_bp);
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}
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void
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test_basics (void)
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{
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test (); /* for SIGTRAP */
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test (); /* for breakpoint once */
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test (); /* for breakpoint twice */
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test (); /* for disabled bp SIGTRAP */
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test (); /* for breakpoint thrice */
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}
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void
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test_next (void)
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{
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test (); /* for next */
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counter = 0; /* after next */
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}
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#ifdef SIGNALS
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static void
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test_signal_handler (int sig)
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{
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}
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void
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test_signal_with_handler (void)
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{
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signal (SIGUSR1, test_signal_handler);
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test ();
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}
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void
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test_signal_no_handler (void)
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{
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signal (SIGUSR1, SIG_IGN);
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test ();
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}
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static void
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test_signal_nested_handler ()
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{
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test ();
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}
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void
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test_signal_nested_done (void)
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{
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}
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void
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test_signal_nested (void)
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{
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counter = 0;
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signal (SIGALRM, test_signal_nested_handler);
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alarm (1);
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test ();
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test_signal_nested_done ();
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}
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#endif
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int
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main (void)
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{
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setup ();
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test_basics ();
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test_next ();
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#ifdef SIGNALS
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test_signal_nested ();
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test_signal_with_handler ();
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test_signal_no_handler ();
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#endif
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return 0;
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}
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