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[src/trunk]: src/tests/kernel Add new tests dbregs[12] in t_ptrace_wait{, 3, 4, ...
details: https://anonhg.NetBSD.org/src/rev/ccdf7c7616eb
branches: trunk
changeset: 349206:ccdf7c7616eb
user: kamil <kamil%NetBSD.org@localhost>
date: Tue Nov 29 21:58:13 2016 +0000
description:
Add new tests dbregs[12] in t_ptrace_wait{,3,4,6,id,pid}
dbregs1:
Verify plain PT_GETDBREGS call without further steps
dbregs2:
Verify PT_GETDBREGS and PT_SETDBREGS calls without changing regs
These tests are to be used to verify CPU Debug Register accessors in the
ptrace(2) interface.
Additionally fix also fpregs2 test to really call PT_SETFPREGS.
Sponsored by <The NetBSD Foundation>
diffstat:
tests/kernel/t_ptrace_wait.c | 135 +++++++++++++++++++++++++++++++++++++++++-
1 files changed, 131 insertions(+), 4 deletions(-)
diffs (184 lines):
diff -r 8d9df81be5d5 -r ccdf7c7616eb tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c Tue Nov 29 21:54:11 2016 +0000
+++ b/tests/kernel/t_ptrace_wait.c Tue Nov 29 21:58:13 2016 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.34 2016/11/29 21:31:45 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.35 2016/11/29 21:58:13 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.34 2016/11/29 21:31:45 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.35 2016/11/29 21:58:13 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -202,6 +202,12 @@
#define HAVE_FPREGS
#endif
+/* Add guards for cpu debug registers */
+#if defined(PT_GETDBREGS) \
+ && defined(PT_SETDBREGS)
+#define HAVE_DBREGS
+#endif
+
/*
* If waitid(2) returns because one or more processes have a state change to
* report, 0 is returned. If an error is detected, a value of -1 is returned
@@ -4414,7 +4420,7 @@
validate_status_stopped(status, sigval);
- printf("Call GETREGS for the child process\n");
+ printf("Call GETFPREGS for the child process\n");
ATF_REQUIRE(ptrace(PT_GETFPREGS, child, &r, 0) != -1);
printf("Before resuming the child process where it left off and "
@@ -4473,7 +4479,119 @@
ATF_REQUIRE(ptrace(PT_GETFPREGS, child, &r, 0) != -1);
printf("Call SETFPREGS for the child (without changed regs)\n");
- ATF_REQUIRE(ptrace(PT_GETFPREGS, child, &r, 0) != -1);
+ ATF_REQUIRE(ptrace(PT_SETFPREGS, child, &r, 0) != -1);
+
+ 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(dbregs1);
+ATF_TC_HEAD(dbregs1, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify plain PT_GETDBREGS call without further steps");
+}
+
+ATF_TC_BODY(dbregs1, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r;
+
+ printf("Before forking process PID=%d\n", getpid());
+ child = atf_utils_fork();
+ 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);
+
+ 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\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r, 0) != -1);
+
+ 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(dbregs2);
+ATF_TC_HEAD(dbregs2, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify PT_GETDBREGS and PT_SETDBREGS calls without changing "
+ "regs");
+}
+
+ATF_TC_BODY(dbregs2, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct dbreg r;
+
+ printf("Before forking process PID=%d\n", getpid());
+ child = atf_utils_fork();
+ 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);
+
+ 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\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r, 0) != -1);
+
+ printf("Call SETDBREGS for the child (without changed regs)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r, 0) != -1);
printf("Before resuming the child process where it left off and "
"without signal to be sent\n");
@@ -4775,6 +4893,12 @@
#define ATF_TP_ADD_TC_HAVE_FPREGS(a,b)
#endif
+#if defined(HAVE_DBREGS)
+#define ATF_TP_ADD_TC_HAVE_DBREGS(a,b) ATF_TP_ADD_TC(a,b)
+#else
+#define ATF_TP_ADD_TC_HAVE_DBREGS(a,b)
+#endif
+
#if defined(PT_STEP)
#define ATF_TP_ADD_TC_PT_STEP(a,b) ATF_TP_ADD_TC(a,b)
#else
@@ -4852,6 +4976,9 @@
ATF_TP_ADD_TC_HAVE_FPREGS(tp, fpregs1);
ATF_TP_ADD_TC_HAVE_FPREGS(tp, fpregs2);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs1);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs2);
+
ATF_TP_ADD_TC_PT_STEP(tp, step1);
ATF_TP_ADD_TC_PT_STEP(tp, step2);
ATF_TP_ADD_TC_PT_STEP(tp, step3);
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