[src/trunk]: src/tests/kernel/arch/amd64 Add checks for si_code in dbregs_dr[...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a1e132993ac8
branches:  trunk
changeset: 351602:a1e132993ac8
user:      kamil <kamil%NetBSD.org@localhost>
date:      Sun Feb 19 22:09:29 2017 +0000

description:
Add checks for si_code in dbregs_dr[0123]_trap_variable in ATF arch/amd64

Validate that debug register traps generate appropriate SIGTRAP signal with
TRAP_DBREG property in si_code.

Sponsored by <The NetBSD Foundation>

diffstat:

 tests/kernel/arch/amd64/t_ptrace_wait.c |  64 +++++++++++++++++++++++++++++++-
 1 files changed, 62 insertions(+), 2 deletions(-)

diffs (134 lines):

diff -r f0ab202b3394 -r a1e132993ac8 tests/kernel/arch/amd64/t_ptrace_wait.c
--- a/tests/kernel/arch/amd64/t_ptrace_wait.c   Sun Feb 19 20:27:22 2017 +0000
+++ b/tests/kernel/arch/amd64/t_ptrace_wait.c   Sun Feb 19 22:09:29 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace_wait.c,v 1.14 2017/02/18 04:30:34 kamil Exp $ */
+/*     $NetBSD: t_ptrace_wait.c,v 1.15 2017/02/19 22:09:29 kamil Exp $ */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.14 2017/02/18 04:30:34 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.15 2017/02/19 22:09:29 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -1330,6 +1330,9 @@
        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 */
@@ -1392,6 +1395,18 @@
 
        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);
 
@@ -1444,6 +1459,9 @@
        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 */
@@ -1506,6 +1524,18 @@
 
        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);
 
@@ -1558,6 +1588,9 @@
        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 */
@@ -1620,6 +1653,18 @@
 
        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);
 
@@ -1672,6 +1717,9 @@
        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 */
@@ -1734,6 +1782,18 @@
 
        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);