t_ptrace_register_wait.h revision 1.1
1 /* $NetBSD: t_ptrace_register_wait.h,v 1.1 2020/05/04 20:55:48 kamil Exp $ */ 2 3 /*- 4 * Copyright (c) 2016, 2017, 2018, 2019, 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 30 #if defined(HAVE_GPREGS) || defined(HAVE_FPREGS) 31 static void 32 access_regs(const char *regset, const char *aux) 33 { 34 const int exitval = 5; 35 const int sigval = SIGSTOP; 36 pid_t child, wpid; 37 #if defined(TWAIT_HAVE_STATUS) 38 int status; 39 #endif 40 #if defined(HAVE_GPREGS) 41 struct reg gpr; 42 register_t rgstr; 43 #endif 44 #if defined(HAVE_FPREGS) 45 struct fpreg fpr; 46 #endif 47 48 #if !defined(HAVE_GPREGS) 49 if (strcmp(regset, "regs") == 0) 50 atf_tc_fail("Impossible test scenario!"); 51 #endif 52 53 #if !defined(HAVE_FPREGS) 54 if (strcmp(regset, "fpregs") == 0) 55 atf_tc_fail("Impossible test scenario!"); 56 #endif 57 58 DPRINTF("Before forking process PID=%d\n", getpid()); 59 SYSCALL_REQUIRE((child = fork()) != -1); 60 if (child == 0) { 61 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 62 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 63 64 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 65 FORKEE_ASSERT(raise(sigval) == 0); 66 67 DPRINTF("Before exiting of the child process\n"); 68 _exit(exitval); 69 } 70 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 71 72 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 73 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 74 75 validate_status_stopped(status, sigval); 76 77 #if defined(HAVE_GPREGS) 78 if (strcmp(regset, "regs") == 0) { 79 DPRINTF("Call GETREGS for the child process\n"); 80 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); 81 82 if (strcmp(aux, "none") == 0) { 83 DPRINTF("Retrieved registers\n"); 84 } else if (strcmp(aux, "pc") == 0) { 85 rgstr = PTRACE_REG_PC(&gpr); 86 DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); 87 } else if (strstr(aux, "set_pc") != NULL) { 88 rgstr = PTRACE_REG_PC(&gpr); 89 DPRINTF("Retrieved PC %" PRIxREGISTER "\n", rgstr); 90 if (strstr(aux, "0x1") != NULL) { 91 rgstr |= 0x1; 92 } else if (strstr(aux, "0x3") != NULL) { 93 rgstr |= 0x3; 94 } else if (strstr(aux, "0x7") != NULL) { 95 rgstr |= 0x7; 96 } 97 DPRINTF("Set PC %" PRIxREGISTER "\n", rgstr); 98 PTRACE_REG_SET_PC(&gpr, rgstr); 99 if (strcmp(aux, "set_pc") != 0) { 100 /* This call can fail with EINVAL or similar. */ 101 ptrace(PT_SETREGS, child, &gpr, 0); 102 } 103 } else if (strcmp(aux, "sp") == 0) { 104 rgstr = PTRACE_REG_SP(&gpr); 105 DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); 106 } else if (strcmp(aux, "intrv") == 0) { 107 rgstr = PTRACE_REG_INTRV(&gpr); 108 DPRINTF("Retrieved %" PRIxREGISTER "\n", rgstr); 109 } else if (strcmp(aux, "setregs") == 0) { 110 DPRINTF("Call SETREGS for the child process\n"); 111 SYSCALL_REQUIRE( 112 ptrace(PT_SETREGS, child, &gpr, 0) != -1); 113 } 114 } 115 #endif 116 117 #if defined(HAVE_FPREGS) 118 if (strcmp(regset, "fpregs") == 0) { 119 DPRINTF("Call GETFPREGS for the child process\n"); 120 SYSCALL_REQUIRE(ptrace(PT_GETFPREGS, child, &fpr, 0) != -1); 121 122 if (strcmp(aux, "getfpregs") == 0) { 123 DPRINTF("Retrieved FP registers\n"); 124 } else if (strcmp(aux, "setfpregs") == 0) { 125 DPRINTF("Call SETFPREGS for the child\n"); 126 SYSCALL_REQUIRE( 127 ptrace(PT_SETFPREGS, child, &fpr, 0) != -1); 128 } 129 } 130 #endif 131 132 DPRINTF("Before resuming the child process where it left off and " 133 "without signal to be sent\n"); 134 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 135 136 if (strstr(aux, "unaligned") != NULL) { 137 DPRINTF("Before resuming the child process where it left off " 138 "and without signal to be sent\n"); 139 SYSCALL_REQUIRE(ptrace(PT_KILL, child, NULL, 0) != -1); 140 141 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 142 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), 143 child); 144 145 validate_status_signaled(status, SIGKILL, 0); 146 147 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 148 TWAIT_REQUIRE_FAILURE(ECHILD, 149 wpid = TWAIT_GENERIC(child, &status, 0)); 150 } else { 151 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 152 TWAIT_REQUIRE_SUCCESS( 153 wpid = TWAIT_GENERIC(child, &status, 0), child); 154 155 validate_status_exited(status, exitval); 156 157 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 158 TWAIT_REQUIRE_FAILURE(ECHILD, 159 wpid = TWAIT_GENERIC(child, &status, 0)); 160 } 161 } 162 163 #define ACCESS_REGS(test, regset, aux) \ 164 ATF_TC(test); \ 165 ATF_TC_HEAD(test, tc) \ 166 { \ 167 atf_tc_set_md_var(tc, "descr", \ 168 "Verify " regset " with auxiliary operation: " aux); \ 169 } \ 170 \ 171 ATF_TC_BODY(test, tc) \ 172 { \ 173 \ 174 access_regs(regset, aux); \ 175 } 176 #endif 177 178 #if defined(HAVE_GPREGS) 179 ACCESS_REGS(access_regs1, "regs", "none") 180 ACCESS_REGS(access_regs2, "regs", "pc") 181 ACCESS_REGS(access_regs3, "regs", "set_pc") 182 ACCESS_REGS(access_regs4, "regs", "sp") 183 ACCESS_REGS(access_regs5, "regs", "intrv") 184 ACCESS_REGS(access_regs6, "regs", "setregs") 185 ACCESS_REGS(access_regs_set_unaligned_pc_0x1, "regs", "set_pc+unaligned+0x1") 186 ACCESS_REGS(access_regs_set_unaligned_pc_0x3, "regs", "set_pc+unaligned+0x3") 187 ACCESS_REGS(access_regs_set_unaligned_pc_0x7, "regs", "set_pc+unaligned+0x7") 188 #endif 189 #if defined(HAVE_FPREGS) 190 ACCESS_REGS(access_fpregs1, "fpregs", "getfpregs") 191 ACCESS_REGS(access_fpregs2, "fpregs", "setfpregs") 192 #endif 193 194 #define ATF_TP_ADD_TCS_PTRACE_WAIT_REGISTER() \ 195 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs1); \ 196 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs2); \ 197 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs3); \ 198 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs4); \ 199 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs5); \ 200 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs6); \ 201 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x1); \ 202 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x3); \ 203 ATF_TP_ADD_TC_HAVE_GPREGS(tp, access_regs_set_unaligned_pc_0x7); \ 204 ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs1); \ 205 ATF_TP_ADD_TC_HAVE_FPREGS(tp, access_fpregs2); 206
Indexes created Tue Sep 23 22:09:46 GMT 2025