Module Name: src
Committed By: kamil
Date: Mon Feb 20 01:21:47 UTC 2017
Modified Files:
src/tests/kernel/arch/amd64: t_ptrace_wait.c
Log Message:
Add new tests dbregs_dr*_trap_variable_readwrite_write_*byte* in arch/amd64
Add new tests:
- dbregs_dr0_trap_variable_readwrite_write_byte
- dbregs_dr1_trap_variable_readwrite_write_byte
- dbregs_dr2_trap_variable_readwrite_write_byte
- dbregs_dr3_trap_variable_readwrite_write_byte
- dbregs_dr0_trap_variable_readwrite_write_2bytes
- dbregs_dr1_trap_variable_readwrite_write_2bytes
- dbregs_dr2_trap_variable_readwrite_write_2bytes
- dbregs_dr3_trap_variable_readwrite_write_2bytes
- dbregs_dr0_trap_variable_readwrite_write_4bytes
- dbregs_dr1_trap_variable_readwrite_write_4bytes
- dbregs_dr2_trap_variable_readwrite_write_4bytes
- dbregs_dr3_trap_variable_readwrite_write_4bytes
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/tests/kernel/arch/amd64/t_ptrace_wait.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/kernel/arch/amd64/t_ptrace_wait.c
diff -u src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.16 src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.17
--- src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.16 Sun Feb 19 23:58:30 2017
+++ src/tests/kernel/arch/amd64/t_ptrace_wait.c Mon Feb 20 01:21:47 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.16 2017/02/19 23:58:30 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.17 2017/02/20 01:21:47 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.16 2017/02/19 23:58:30 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.17 2017/02/20 01:21:47 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -1336,7 +1336,7 @@ ATF_TC_BODY(dbregs_dr0_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr0_breakpoint = 1;
- dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr0 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr0 = 0; /* 0b00 -- 1 byte */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -1466,7 +1466,7 @@ ATF_TC_BODY(dbregs_dr1_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr1_breakpoint = 1;
- dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr1 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr1 = 0; /* 0b00 -- 1 byte */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -1596,7 +1596,7 @@ ATF_TC_BODY(dbregs_dr2_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr2_breakpoint = 1;
- dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr2 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr2 = 0; /* 0b00 -- 1 byte */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -1726,7 +1726,7 @@ ATF_TC_BODY(dbregs_dr3_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr3_breakpoint = 1;
- dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr3 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr3 = 0; /* 0b00 -- 1 byte */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -1856,7 +1856,7 @@ ATF_TC_BODY(dbregs_dr0_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr0_breakpoint = 1;
- dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr0 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr0 = 1; /* 0b01 -- 2 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -1986,7 +1986,7 @@ ATF_TC_BODY(dbregs_dr1_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr1_breakpoint = 1;
- dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr1 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr1 = 1; /* 0b01 -- 2 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2116,7 +2116,7 @@ ATF_TC_BODY(dbregs_dr2_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr2_breakpoint = 1;
- dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr2 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr2 = 1; /* 0b01 -- 2 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2246,7 +2246,7 @@ ATF_TC_BODY(dbregs_dr3_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr3_breakpoint = 1;
- dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr3 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr3 = 1; /* 0b01 -- 2 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2376,7 +2376,7 @@ ATF_TC_BODY(dbregs_dr0_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr0_breakpoint = 1;
- dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr0 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr0 = 3; /* 0b11 -- 4 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2506,7 +2506,7 @@ ATF_TC_BODY(dbregs_dr1_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr1_breakpoint = 1;
- dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr1 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr1 = 3; /* 0b11 -- 4 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2636,7 +2636,7 @@ ATF_TC_BODY(dbregs_dr2_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr2_breakpoint = 1;
- dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr2 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr2 = 3; /* 0b11 -- 4 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2766,7 +2766,7 @@ ATF_TC_BODY(dbregs_dr3_trap_variable_wri
dr7.raw = 0;
dr7.bits.global_dr3_breakpoint = 1;
- dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.condition_dr3 = 1; /* 0b01 -- break on data write only */
dr7.bits.len_dr3 = 3; /* 0b11 -- 4 bytes */
printf("Assert that known number of Debug Registers (%zu) is valid\n",
@@ -2866,44 +2866,1619 @@ ATF_TC_BODY(dbregs_dr3_trap_variable_wri
}
#endif
-ATF_TP_ADD_TCS(tp)
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr0_trap_variable_readwrite_write_byte);
+ATF_TC_HEAD(dbregs_dr0_trap_variable_readwrite_write_byte, tc)
{
- setvbuf(stdout, NULL, _IONBF, 0);
- setvbuf(stderr, NULL, _IONBF, 0);
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR0 triggers SIGTRAP "
+ "(break on data read/write trap in read 1 byte mode)");
+}
- ATF_TP_ADD_TC_HAVE_GPREGS(tp, regs1);
+ATF_TC_BODY(dbregs_dr0_trap_variable_readwrite_write_byte, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_print);
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3);
+ dr7.raw = 0;
+ dr7.bits.global_dr0_breakpoint = 1;
+ dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr0 = 0; /* 0b00 -- 1 byte */
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0_yield);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1_yield);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2_yield);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3_yield);
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0_continued);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1_continued);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2_continued);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3_continued);
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_byte);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_byte);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_byte);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_byte);
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_2bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_2bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_2bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_2bytes);
+ watchme = 1;
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_4bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_4bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_4bytes);
- ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_4bytes);
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[0] = (long)(intptr_t)&watchme;
+ printf("Set DR0 (r1.dr[0]) to new value %#lx\n", r1.dr[0]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr1_trap_variable_readwrite_write_byte);
+ATF_TC_HEAD(dbregs_dr1_trap_variable_readwrite_write_byte, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR1 triggers SIGTRAP "
+ "(break on data read/write trap in read 1 byte mode)");
+}
+
+ATF_TC_BODY(dbregs_dr1_trap_variable_readwrite_write_byte, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr1_breakpoint = 1;
+ dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr1 = 0; /* 0b00 -- 1 byte */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[1] = (long)(intptr_t)&watchme;
+ printf("Set DR1 (r1.dr[1]) to new value %#lx\n", r1.dr[1]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr2_trap_variable_readwrite_write_byte);
+ATF_TC_HEAD(dbregs_dr2_trap_variable_readwrite_write_byte, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR2 triggers SIGTRAP "
+ "(break on data read/write trap in read 1 byte mode)");
+}
+
+ATF_TC_BODY(dbregs_dr2_trap_variable_readwrite_write_byte, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr2_breakpoint = 1;
+ dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr2 = 0; /* 0b00 -- 1 byte */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[2] = (long)(intptr_t)&watchme;
+ printf("Set DR2 (r1.dr[2]) to new value %#lx\n", r1.dr[2]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr3_trap_variable_readwrite_write_byte);
+ATF_TC_HEAD(dbregs_dr3_trap_variable_readwrite_write_byte, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR3 triggers SIGTRAP "
+ "(break on data read/write trap in read 1 byte mode)");
+}
+
+ATF_TC_BODY(dbregs_dr3_trap_variable_readwrite_write_byte, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr3_breakpoint = 1;
+ dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr3 = 0; /* 0b00 -- 1 byte */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[3] = (long)(intptr_t)&watchme;
+ printf("Set DR3 (r1.dr[3]) to new value %#lx\n", r1.dr[3]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr0_trap_variable_readwrite_write_2bytes);
+ATF_TC_HEAD(dbregs_dr0_trap_variable_readwrite_write_2bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR0 triggers SIGTRAP "
+ "(break on data read/write trap in read 2 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr0_trap_variable_readwrite_write_2bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr0_breakpoint = 1;
+ dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr0 = 1; /* 0b01 -- 2 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[0] = (long)(intptr_t)&watchme;
+ printf("Set DR0 (r1.dr[0]) to new value %#lx\n", r1.dr[0]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr1_trap_variable_readwrite_write_2bytes);
+ATF_TC_HEAD(dbregs_dr1_trap_variable_readwrite_write_2bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR1 triggers SIGTRAP "
+ "(break on data read/write trap in read 2 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr1_trap_variable_readwrite_write_2bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr1_breakpoint = 1;
+ dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr1 = 1; /* 0b01 -- 2 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[1] = (long)(intptr_t)&watchme;
+ printf("Set DR1 (r1.dr[1]) to new value %#lx\n", r1.dr[1]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr2_trap_variable_readwrite_write_2bytes);
+ATF_TC_HEAD(dbregs_dr2_trap_variable_readwrite_write_2bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR2 triggers SIGTRAP "
+ "(break on data read/write trap in read 2 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr2_trap_variable_readwrite_write_2bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr2_breakpoint = 1;
+ dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr2 = 1; /* 0b01 -- 2 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[2] = (long)(intptr_t)&watchme;
+ printf("Set DR2 (r1.dr[2]) to new value %#lx\n", r1.dr[2]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr3_trap_variable_readwrite_write_2bytes);
+ATF_TC_HEAD(dbregs_dr3_trap_variable_readwrite_write_2bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR3 triggers SIGTRAP "
+ "(break on data read/write trap in read 2 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr3_trap_variable_readwrite_write_2bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr3_breakpoint = 1;
+ dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr3 = 1; /* 0b01 -- 2 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[3] = (long)(intptr_t)&watchme;
+ printf("Set DR3 (r1.dr[3]) to new value %#lx\n", r1.dr[3]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr0_trap_variable_readwrite_write_4bytes);
+ATF_TC_HEAD(dbregs_dr0_trap_variable_readwrite_write_4bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR0 triggers SIGTRAP "
+ "(break on data read/write trap in read 4 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr0_trap_variable_readwrite_write_4bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr0_breakpoint = 1;
+ dr7.bits.condition_dr0 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr0 = 3; /* 0b11 -- 4 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[0] = (long)(intptr_t)&watchme;
+ printf("Set DR0 (r1.dr[0]) to new value %#lx\n", r1.dr[0]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr1_trap_variable_readwrite_write_4bytes);
+ATF_TC_HEAD(dbregs_dr1_trap_variable_readwrite_write_4bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR1 triggers SIGTRAP "
+ "(break on data read/write trap in read 4 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr1_trap_variable_readwrite_write_4bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr1_breakpoint = 1;
+ dr7.bits.condition_dr1 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr1 = 3; /* 0b11 -- 4 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[1] = (long)(intptr_t)&watchme;
+ printf("Set DR1 (r1.dr[1]) to new value %#lx\n", r1.dr[1]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr2_trap_variable_readwrite_write_4bytes);
+ATF_TC_HEAD(dbregs_dr2_trap_variable_readwrite_write_4bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR2 triggers SIGTRAP "
+ "(break on data read/write trap in read 4 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr2_trap_variable_readwrite_write_4bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr2_breakpoint = 1;
+ dr7.bits.condition_dr2 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr2 = 3; /* 0b11 -- 4 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[2] = (long)(intptr_t)&watchme;
+ printf("Set DR2 (r1.dr[2]) to new value %#lx\n", r1.dr[2]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr3_trap_variable_readwrite_write_4bytes);
+ATF_TC_HEAD(dbregs_dr3_trap_variable_readwrite_write_4bytes, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that setting trap with DR3 triggers SIGTRAP "
+ "(break on data read/write trap in read 4 bytes mode)");
+}
+
+ATF_TC_BODY(dbregs_dr3_trap_variable_readwrite_write_4bytes, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r1;
+ struct dbreg r2;
+ /* Number of available CPU Debug Registers on AMD64 */
+ const size_t len = 16;
+ size_t i;
+ volatile int watchme;
+ union u dr7;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ dr7.raw = 0;
+ dr7.bits.global_dr3_breakpoint = 1;
+ dr7.bits.condition_dr3 = 3; /* 0b11 -- break on data write&read */
+ dr7.bits.len_dr3 = 3; /* 0b11 -- 4 bytes */
+
+ printf("Assert that known number of Debug Registers (%zu) is valid\n",
+ len);
+ ATF_REQUIRE_EQ(__arraycount(r1.dr), len);
+ ATF_REQUIRE_EQ(__arraycount(r2.dr), len);
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ watchme = 1;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[3] = (long)(intptr_t)&watchme;
+ printf("Set DR3 (r1.dr[3]) to new value %#lx\n", r1.dr[3]);
+
+ r1.dr[7] = dr7.raw;
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ printf("Before checking siginfo_t\n");
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_DBREG);
+
+ printf("Call CONTINUE for the child process\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Call GETDBREGS for the child process (r2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("Assert that (r1) and (r2) are the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, len) == 0);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+ATF_TP_ADD_TCS(tp)
+{
+ setvbuf(stdout, NULL, _IONBF, 0);
+ setvbuf(stderr, NULL, _IONBF, 0);
+
+ ATF_TP_ADD_TC_HAVE_GPREGS(tp, regs1);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_print);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0_yield);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1_yield);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2_yield);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3_yield);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr0_continued);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr1_continued);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr2_continued);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_preserve_dr3_continued);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_byte);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_2bytes);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_writeonly_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_writeonly_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_writeonly_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_writeonly_4bytes);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_readwrite_write_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_readwrite_write_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_readwrite_write_byte);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_readwrite_write_byte);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_readwrite_write_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_readwrite_write_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_readwrite_write_2bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_readwrite_write_2bytes);
+
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_trap_variable_readwrite_write_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_trap_variable_readwrite_write_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_trap_variable_readwrite_write_4bytes);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_trap_variable_readwrite_write_4bytes);
return atf_no_error();
}
