/* $NetBSD: t_ptrace_register_wait.h,v 1.4 2021/10/14 13:50:36 gson Exp $ */ /*- * Copyright (c) 2016, 2017, 2018, 2019, 2020 The NetBSD Foundation, Inc. * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ #if defined(HAVE_GPREGS) || defined(HAVE_FPREGS) static void access_regs(const char *regset, const char *aux) { const int exitval = 5; const int sigval = SIGSTOP; pid_t child, wpid; #if defined(TWAIT_HAVE_STATUS) int status; #endif #if defined(HAVE_GPREGS) struct reg gpr; register_t rgstr; #endif #if defined(HAVE_FPREGS) struct fpreg fpr; #endif #if !defined(HAVE_GPREGS) if (strcmp(regset, "regs") == 0) atf_tc_fail("Impossible test scenario!"); #endif #if !defined(HAVE_FPREGS) if (strcmp(regset, "fpregs") == 0) atf_tc_fail("Impossible test scenario!"); #endif DPRINTF("Before forking process PID=%d\n", getpid()); SYSCALL_REQUIRE((child = fork()) != -1); if (child == 0) { DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); DPRINTF("Before raising %s from child\n", strsignal(sigval)); FORKEE_ASSERT(raise(sigval) == 0); DPRINTF("Before exiting of the child process\n"); _exit(exitval); } DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); validate_status_stopped(status, sigval); #if defined(HAVE_GPREGS) if (strcmp(regset, "regs") == 0) { DPRINTF("Call GETREGS for the child process\n"); SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); if (strcmp(aux, "none") == 0) { DPRINTF("Retrieved registers\n"); } else if (strcmp(aux, "pc") == 0) { rgstr = PTRACE_REG_PC(&gpr); DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); } else if (strstr(aux, "set_pc") != NULL) { rgstr = PTRACE_REG_PC(&gpr); DPRINTF("Retrieved PC %" PRIxREGISTER "\n", rgstr); if (strstr(aux, "0x1") != NULL) { rgstr |= 0x1; } else if (strstr(aux, "0x3") != NULL) { rgstr |= 0x3; } else if (strstr(aux, "0x7") != NULL) { rgstr |= 0x7; } DPRINTF("Set PC %" PRIxREGISTER "\n", rgstr); PTRACE_REG_SET_PC(&gpr, rgstr); if (strcmp(aux, "set_pc") != 0) { /* This call can fail with EINVAL or similar. */ ptrace(PT_SETREGS, child, &gpr, 0); } } else if (strcmp(aux, "sp") == 0) { rgstr = PTRACE_REG_SP(&gpr); DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); } else if (strcmp(aux, "intrv") == 0) { rgstr = PTRACE_REG_INTRV(&gpr); DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); } else if (strcmp(aux, "setregs") == 0) { DPRINTF("Call SETREGS for the child process\n"); SYSCALL_REQUIRE( ptrace(PT_SETREGS, child, &gpr, 0) != -1); } } #endif #if defined(HAVE_FPREGS) if (strcmp(regset, "fpregs") == 0) { DPRINTF("Call GETFPREGS for the child process\n"); SYSCALL_REQUIRE(ptrace(PT_GETFPREGS, child, &fpr, 0) != -1); if (strcmp(aux, "getfpregs") == 0) { DPRINTF("Retrieved FP registers\n"); } else if (strcmp(aux, "setfpregs") == 0) { DPRINTF("Call SETFPREGS for the child\n"); SYSCALL_REQUIRE( ptrace(PT_SETFPREGS, child, &fpr, 0) != -1); } } #endif DPRINTF("Before resuming the child process where it left off and " "without signal to be sent\n"); SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); if (strstr(aux, "unaligned") != NULL) { DPRINTF("Before resuming the child process where it left off " "and without signal to be sent\n"); ptrace(PT_KILL, child, NULL, 0); DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); } else { DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); TWAIT_REQUIRE_SUCCESS( wpid = TWAIT_GENERIC(child, &status, 0), child); validate_status_exited(status, exitval); DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); } } #define ACCESS_REGS(test, regset, aux) \ ATF_TC(test); \ ATF_TC_HEAD(test, tc) \ { \ atf_tc_set_md_var(tc, "descr", \ "Verify " regset " with auxiliary operation: " aux); \ } \ \ ATF_TC_BODY(test, tc) \ { \ \ access_regs(regset, aux); \ } #endif #if defined(HAVE_GPREGS) ACCESS_REGS(access_regs1, "regs", "none") ACCESS_REGS(access_regs2, "regs", "pc") ACCESS_REGS(access_regs3, "regs", "set_pc") ACCESS_REGS(access_regs4, "regs", "sp") ACCESS_REGS(access_regs5, "regs", "intrv") ACCESS_REGS(access_regs6, "regs", "setregs") ACCESS_REGS(access_regs_set_unaligned_pc_0x1, "regs", "set_pc+unaligned+0x1") ACCESS_REGS(access_regs_set_unaligned_pc_0x3, "regs", "set_pc+unaligned+0x3") ACCESS_REGS(access_regs_set_unaligned_pc_0x7, "regs", "set_pc+unaligned+0x7") #endif #if defined(HAVE_FPREGS) ACCESS_REGS(access_fpregs1, "fpregs", "getfpregs") ACCESS_REGS(access_fpregs2, "fpregs", "setfpregs") #endif #define ATF_TP_ADD_TCS_PTRACE_WAIT_REGISTER() \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs1); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs2); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs3); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs4); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs5); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs6); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x1); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x3); \ ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x7); \ ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs1); \ ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs2);