205 lines
7.0 KiB
C
205 lines
7.0 KiB
C
/* $NetBSD: t_ptrace_register_wait.h,v 1.3 2020/05/11 12:17:57 kamil Exp $ */
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/*-
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* Copyright (c) 2016, 2017, 2018, 2019, 2020 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(HAVE_GPREGS) || defined(HAVE_FPREGS)
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static void
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access_regs(const char *regset, const char *aux)
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{
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const int exitval = 5;
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const int sigval = SIGSTOP;
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pid_t child, wpid;
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#if defined(TWAIT_HAVE_STATUS)
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int status;
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#endif
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#if defined(HAVE_GPREGS)
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struct reg gpr;
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register_t rgstr;
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#endif
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#if defined(HAVE_FPREGS)
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struct fpreg fpr;
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#endif
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#if !defined(HAVE_GPREGS)
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if (strcmp(regset, "regs") == 0)
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atf_tc_fail("Impossible test scenario!");
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#endif
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#if !defined(HAVE_FPREGS)
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if (strcmp(regset, "fpregs") == 0)
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atf_tc_fail("Impossible test scenario!");
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#endif
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DPRINTF("Before forking process PID=%d\n", getpid());
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SYSCALL_REQUIRE((child = fork()) != -1);
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if (child == 0) {
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DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
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FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
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DPRINTF("Before raising %s from child\n", strsignal(sigval));
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FORKEE_ASSERT(raise(sigval) == 0);
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DPRINTF("Before exiting of the child process\n");
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_exit(exitval);
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}
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DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
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DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, sigval);
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#if defined(HAVE_GPREGS)
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if (strcmp(regset, "regs") == 0) {
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DPRINTF("Call GETREGS for the child process\n");
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SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1);
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if (strcmp(aux, "none") == 0) {
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DPRINTF("Retrieved registers\n");
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} else if (strcmp(aux, "pc") == 0) {
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rgstr = PTRACE_REG_PC(&gpr);
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DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr);
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} else if (strstr(aux, "set_pc") != NULL) {
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rgstr = PTRACE_REG_PC(&gpr);
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DPRINTF("Retrieved PC %" PRIxREGISTER "\n", rgstr);
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if (strstr(aux, "0x1") != NULL) {
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rgstr |= 0x1;
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} else if (strstr(aux, "0x3") != NULL) {
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rgstr |= 0x3;
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} else if (strstr(aux, "0x7") != NULL) {
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rgstr |= 0x7;
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}
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DPRINTF("Set PC %" PRIxREGISTER "\n", rgstr);
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PTRACE_REG_SET_PC(&gpr, rgstr);
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if (strcmp(aux, "set_pc") != 0) {
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/* This call can fail with EINVAL or similar. */
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ptrace(PT_SETREGS, child, &gpr, 0);
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}
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} else if (strcmp(aux, "sp") == 0) {
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rgstr = PTRACE_REG_SP(&gpr);
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DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr);
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} else if (strcmp(aux, "intrv") == 0) {
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rgstr = PTRACE_REG_INTRV(&gpr);
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DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr);
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} else if (strcmp(aux, "setregs") == 0) {
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DPRINTF("Call SETREGS for the child process\n");
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SYSCALL_REQUIRE(
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ptrace(PT_SETREGS, child, &gpr, 0) != -1);
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}
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}
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#endif
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#if defined(HAVE_FPREGS)
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if (strcmp(regset, "fpregs") == 0) {
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DPRINTF("Call GETFPREGS for the child process\n");
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SYSCALL_REQUIRE(ptrace(PT_GETFPREGS, child, &fpr, 0) != -1);
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if (strcmp(aux, "getfpregs") == 0) {
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DPRINTF("Retrieved FP registers\n");
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} else if (strcmp(aux, "setfpregs") == 0) {
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DPRINTF("Call SETFPREGS for the child\n");
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SYSCALL_REQUIRE(
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ptrace(PT_SETFPREGS, child, &fpr, 0) != -1);
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}
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}
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#endif
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DPRINTF("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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if (strstr(aux, "unaligned") != NULL) {
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DPRINTF("Before resuming the child process where it left off "
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"and without signal to be sent\n");
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ptrace(PT_KILL, child, NULL, 0);
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DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0),
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child);
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DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_FAILURE(ECHILD,
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wpid = TWAIT_GENERIC(child, &status, 0));
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} else {
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DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(
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wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_exited(status, exitval);
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DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_FAILURE(ECHILD,
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wpid = TWAIT_GENERIC(child, &status, 0));
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}
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}
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#define ACCESS_REGS(test, regset, aux) \
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ATF_TC(test); \
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ATF_TC_HEAD(test, tc) \
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{ \
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atf_tc_set_md_var(tc, "descr", \
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"Verify " regset " with auxiliary operation: " aux); \
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} \
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\
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ATF_TC_BODY(test, tc) \
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{ \
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\
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access_regs(regset, aux); \
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}
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#endif
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#if defined(HAVE_GPREGS)
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ACCESS_REGS(access_regs1, "regs", "none")
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ACCESS_REGS(access_regs2, "regs", "pc")
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ACCESS_REGS(access_regs3, "regs", "set_pc")
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ACCESS_REGS(access_regs4, "regs", "sp")
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ACCESS_REGS(access_regs5, "regs", "intrv")
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ACCESS_REGS(access_regs6, "regs", "setregs")
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ACCESS_REGS(access_regs_set_unaligned_pc_0x1, "regs", "set_pc+unaligned+0x1")
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ACCESS_REGS(access_regs_set_unaligned_pc_0x3, "regs", "set_pc+unaligned+0x3")
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ACCESS_REGS(access_regs_set_unaligned_pc_0x7, "regs", "set_pc+unaligned+0x7")
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#endif
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#if defined(HAVE_FPREGS)
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ACCESS_REGS(access_fpregs1, "fpregs", "getfpregs")
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ACCESS_REGS(access_fpregs2, "fpregs", "setfpregs")
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#endif
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#define ATF_TP_ADD_TCS_PTRACE_WAIT_REGISTER() \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs1); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs2); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs3); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs4); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs5); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs6); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x1); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x3); \
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ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x7); \
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ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs1); \
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ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs2);
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