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/* $OpenBSD: ptrace.c,v 1.9 2020/07/06 07:31:51 kettenis Exp $ */
/*
* Copyright (c) 2004, Mark Kettenis.
* Copyright (c) 2004, Miodrag Vallat.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <machine/reg.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/*
* This tests checks whether ptrace will correctly cope with unaligned pc.
*/
int
main(void)
{
pid_t pid;
int status;
pid = fork();
if (pid == 0) {
ptrace(PT_TRACE_ME, 0, 0, 0);
raise(SIGTRAP);
exit(EXIT_FAILURE);
} else {
struct reg regs;
waitpid(pid, &status, 0);
ptrace(PT_GETREGS, pid, (caddr_t)®s, 0);
/*
* Make sure amd64 is tested before i386
*/
#if defined(__alpha__)
regs.r_regs[R_ZERO]|= 0x07;
#elif defined(__x86_64__)
regs.r_rip |= 0x07;
#elif defined(__arm__)
regs.r_pc |= 0x03;
#elif defined(__hppa__)
regs.r_pcoqh |= 0x03;
regs.r_pcoqt |= 0x03;
#elif defined(__i386__)
regs.r_eip |= 0x03;
#elif defined(__mips64__)
regs.r_regs[PC] |= 0x03;
#elif defined(__powerpc64__)
regs.r_pc |= 0x03;
#elif defined(__powerpc__)
regs.pc |= 0x03;
#elif defined(__sh__)
regs.r_spc |= 0x01;
#elif defined( __sparcv9__)
regs.r_pc |= 0x07;
regs.r_npc |= 0x07;
#elif defined( __m88k__)
/*
* The following code is for 88100 only, but should work with
* 88110 too, even though it sets the DELAY bit in exip.
*/
regs.sxip |= 0x03;
regs.snip |= 0x03;
regs.sfip |= 0x03;
#endif
ptrace(PT_SETREGS, pid, (caddr_t)®s, 0);
ptrace(PT_CONTINUE, pid, (caddr_t)1, 0);
}
exit(EXIT_SUCCESS);
}
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