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[src/trunk]: src/tests/lib/libc/sys Add tests for reading registers from x86 ...
details: https://anonhg.NetBSD.org/src/rev/0f8a41ec7521
branches: trunk
changeset: 847888:0f8a41ec7521
user: mgorny <mgorny%NetBSD.org@localhost>
date: Wed Jan 08 17:23:34 2020 +0000
description:
Add tests for reading registers from x86 core dumps
diffstat:
tests/lib/libc/sys/t_ptrace_x86_wait.h | 191 ++++++++++++++++++++++++--------
1 files changed, 143 insertions(+), 48 deletions(-)
diffs (truncated from 325 to 300 lines):
diff -r a2c931199305 -r 0f8a41ec7521 tests/lib/libc/sys/t_ptrace_x86_wait.h
--- a/tests/lib/libc/sys/t_ptrace_x86_wait.h Wed Jan 08 17:23:15 2020 +0000
+++ b/tests/lib/libc/sys/t_ptrace_x86_wait.h Wed Jan 08 17:23:34 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_x86_wait.h,v 1.17 2020/01/08 17:23:15 mgorny Exp $ */
+/* $NetBSD: t_ptrace_x86_wait.h,v 1.18 2020/01/08 17:23:34 mgorny Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -2225,7 +2225,8 @@
enum x86_test_regmode {
TEST_GETREGS,
- TEST_SETREGS
+ TEST_SETREGS,
+ TEST_COREDUMP
};
static __inline void get_gp32_regs(union x86_test_register out[])
@@ -2687,8 +2688,10 @@
#endif
struct xstate xst;
struct iovec iov;
- struct fxsave* fxs;
+ struct fxsave* fxs = NULL;
uint64_t xst_flags = 0;
+ char core_path[] = "/tmp/core.XXXXXX";
+ int core_fd;
const union x86_test_register expected[] __aligned(32) = {
{{ 0x0706050403020100, 0x0F0E0D0C0B0A0908,
@@ -2796,6 +2799,7 @@
DPRINTF("Before running assembly from child\n");
switch (regmode) {
case TEST_GETREGS:
+ case TEST_COREDUMP:
switch (regs) {
case GPREGS_32:
set_gp32_regs(expected);
@@ -2969,40 +2973,7 @@
validate_status_stopped(status, sigval);
- switch (regset) {
- case TEST_GPREGS:
- ATF_REQUIRE(regs < FPREGS_MM);
- DPRINTF("Call GETREGS for the child process\n");
- SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1);
- break;
- case TEST_XMMREGS:
-#if defined(__i386__)
- ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
- DPRINTF("Call GETXMMREGS for the child process\n");
- SYSCALL_REQUIRE(ptrace(PT_GETXMMREGS, child, &xmm, 0) != -1);
- fxs = &xmm.fxstate;
- break;
-#else
- /*FALLTHROUGH*/
-#endif
- case TEST_FPREGS:
-#if defined(__x86_64__)
- ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
- fxs = &fpr.fxstate;
-#else
- ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_XMM);
-#endif
- DPRINTF("Call GETFPREGS for the child process\n");
- SYSCALL_REQUIRE(ptrace(PT_GETFPREGS, child, &fpr, 0) != -1);
- break;
- case TEST_XSTATE:
- ATF_REQUIRE(regs >= FPREGS_MM);
- iov.iov_base = &xst;
- iov.iov_len = sizeof(xst);
-
- DPRINTF("Call GETXSTATE for the child process\n");
- SYSCALL_REQUIRE(ptrace(PT_GETXSTATE, child, &iov, 0) != -1);
-
+ if (regset == TEST_XSTATE) {
switch (regs) {
case FPREGS_MM:
xst_flags |= XCR0_X87;
@@ -3020,21 +2991,117 @@
__unreachable();
break;
}
-
- ATF_REQUIRE((xst.xs_rfbm & xst_flags) == xst_flags);
- switch (regmode) {
- case TEST_SETREGS:
- xst.xs_rfbm = xst_flags;
- xst.xs_xstate_bv = xst_flags;
+ }
+
+ switch (regmode) {
+ case TEST_GETREGS:
+ case TEST_SETREGS:
+ switch (regset) {
+ case TEST_GPREGS:
+ ATF_REQUIRE(regs < FPREGS_MM);
+ DPRINTF("Call GETREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0)
+ != -1);
+ break;
+ case TEST_XMMREGS:
+#if defined(__i386__)
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
+ DPRINTF("Call GETXMMREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETXMMREGS, child, &xmm, 0)
+ != -1);
+ fxs = &xmm.fxstate;
+ break;
+#else
+ /*FALLTHROUGH*/
+#endif
+ case TEST_FPREGS:
+#if defined(__x86_64__)
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
+ fxs = &fpr.fxstate;
+#else
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_XMM);
+#endif
+ DPRINTF("Call GETFPREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETFPREGS, child, &fpr, 0)
+ != -1);
break;
- case TEST_GETREGS:
+ case TEST_XSTATE:
+ ATF_REQUIRE(regs >= FPREGS_MM);
+ iov.iov_base = &xst;
+ iov.iov_len = sizeof(xst);
+
+ DPRINTF("Call GETXSTATE for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETXSTATE, child, &iov, 0)
+ != -1);
+
+ ATF_REQUIRE((xst.xs_rfbm & xst_flags) == xst_flags);
+ switch (regmode) {
+ case TEST_SETREGS:
+ xst.xs_rfbm = xst_flags;
+ xst.xs_xstate_bv = xst_flags;
+ break;
+ case TEST_GETREGS:
+ ATF_REQUIRE((xst.xs_xstate_bv & xst_flags)
+ == xst_flags);
+ break;
+ case TEST_COREDUMP:
+ __unreachable();
+ break;
+ }
+
+ fxs = &xst.xs_fxsave;
+ break;
+ }
+ break;
+ case TEST_COREDUMP:
+ SYSCALL_REQUIRE((core_fd = mkstemp(core_path)) != -1);
+ close(core_fd);
+
+ DPRINTF("Call DUMPCORE for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_DUMPCORE, child, core_path,
+ strlen(core_path)) != -1);
+
+ switch (regset) {
+ case TEST_GPREGS:
+ ATF_REQUIRE(regs < FPREGS_MM);
+ DPRINTF("Parse core file for PT_GETREGS\n");
+ ATF_REQUIRE_EQ(core_find_note(core_path,
+ "NetBSD-CORE@1", PT_GETREGS, &gpr, sizeof(gpr)),
+ sizeof(gpr));
+ break;
+ case TEST_XMMREGS:
+#if defined(__i386__)
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
+ unlink(core_path);
+ atf_tc_skip("XMMREGS not supported in core dumps");
+ break;
+#else
+ /*FALLTHROUGH*/
+#endif
+ case TEST_FPREGS:
+#if defined(__x86_64__)
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_YMM);
+ fxs = &fpr.fxstate;
+#else
+ ATF_REQUIRE(regs >= FPREGS_MM && regs < FPREGS_XMM);
+#endif
+ DPRINTF("Parse core file for PT_GETFPREGS\n");
+ ATF_REQUIRE_EQ(core_find_note(core_path,
+ "NetBSD-CORE@1", PT_GETFPREGS, &fpr, sizeof(fpr)),
+ sizeof(fpr));
+ break;
+ case TEST_XSTATE:
+ ATF_REQUIRE(regs >= FPREGS_MM);
+ DPRINTF("Parse core file for PT_GETXSTATE\n");
+ ATF_REQUIRE_EQ(core_find_note(core_path,
+ "NetBSD-CORE@1", PT_GETXSTATE, &xst, sizeof(xst)),
+ sizeof(xst));
ATF_REQUIRE((xst.xs_xstate_bv & xst_flags)
== xst_flags);
+ fxs = &xst.xs_fxsave;
break;
}
-
- fxs = &xst.xs_fxsave;
- break;
+ unlink(core_path);
}
#if defined(__x86_64__)
@@ -3045,6 +3112,7 @@
switch (regmode) {
case TEST_GETREGS:
+ case TEST_COREDUMP:
switch (regs) {
case GPREGS_32:
#if defined(__i386__)
@@ -3412,12 +3480,16 @@
X86_REGISTER_TEST(x86_gpregs32_write, TEST_GPREGS, GPREGS_32, TEST_SETREGS,
"Test writing basic 32-bit gp registers into debugged program "
"via PT_SETREGS.");
+X86_REGISTER_TEST(x86_gpregs32_core, TEST_GPREGS, GPREGS_32, TEST_COREDUMP,
+ "Test reading basic 32-bit gp registers from core dump.");
X86_REGISTER_TEST(x86_gpregs32_ebp_esp_read, TEST_GPREGS, GPREGS_32_EBP_ESP,
TEST_GETREGS, "Test reading ebp & esp registers from debugged program "
"via PT_GETREGS.");
X86_REGISTER_TEST(x86_gpregs32_ebp_esp_write, TEST_GPREGS, GPREGS_32_EBP_ESP,
TEST_SETREGS, "Test writing ebp & esp registers into debugged program "
"via PT_SETREGS.");
+X86_REGISTER_TEST(x86_gpregs32_ebp_esp_core, TEST_GPREGS, GPREGS_32_EBP_ESP,
+ TEST_COREDUMP, "Test reading ebp & esp registers from core dump.");
X86_REGISTER_TEST(x86_gpregs64_read, TEST_GPREGS, GPREGS_64, TEST_GETREGS,
"Test reading basic 64-bit gp registers from debugged program "
@@ -3425,11 +3497,15 @@
X86_REGISTER_TEST(x86_gpregs64_write, TEST_GPREGS, GPREGS_64, TEST_SETREGS,
"Test writing basic 64-bit gp registers into debugged program "
"via PT_SETREGS.");
+X86_REGISTER_TEST(x86_gpregs64_core, TEST_GPREGS, GPREGS_64, TEST_COREDUMP,
+ "Test reading basic 64-bit gp registers from core dump.");
X86_REGISTER_TEST(x86_gpregs64_r8_read, TEST_GPREGS, GPREGS_64_R8, TEST_GETREGS,
"Test reading r8..r15 registers from debugged program via PT_GETREGS.");
X86_REGISTER_TEST(x86_gpregs64_r8_write, TEST_GPREGS, GPREGS_64_R8,
TEST_SETREGS, "Test writing r8..r15 registers into debugged program "
"via PT_SETREGS.");
+X86_REGISTER_TEST(x86_gpregs64_r8_core, TEST_GPREGS, GPREGS_64_R8,
+ TEST_COREDUMP, "Test reading r8..r15 registers from core dump.");
X86_REGISTER_TEST(x86_fpregs_mm_read, TEST_FPREGS, FPREGS_MM, TEST_GETREGS,
"Test reading mm0..mm7 registers from debugged program "
@@ -3437,12 +3513,16 @@
X86_REGISTER_TEST(x86_fpregs_mm_write, TEST_FPREGS, FPREGS_MM, TEST_SETREGS,
"Test writing mm0..mm7 registers into debugged program "
"via PT_SETFPREGS.");
+X86_REGISTER_TEST(x86_fpregs_mm_core, TEST_FPREGS, FPREGS_MM, TEST_COREDUMP,
+ "Test reading mm0..mm7 registers from coredump.");
X86_REGISTER_TEST(x86_fpregs_xmm_read, TEST_XMMREGS, FPREGS_XMM, TEST_GETREGS,
"Test reading xmm0..xmm15 (..xmm7 on i386) from debugged program "
"via PT_GETFPREGS (PT_GETXMMREGS on i386).");
X86_REGISTER_TEST(x86_fpregs_xmm_write, TEST_XMMREGS, FPREGS_XMM, TEST_SETREGS,
"Test writing xmm0..xmm15 (..xmm7 on i386) into debugged program "
"via PT_SETFPREGS (PT_SETXMMREGS on i386).");
+X86_REGISTER_TEST(x86_fpregs_xmm_core, TEST_XMMREGS, FPREGS_XMM, TEST_COREDUMP,
+ "Test reading xmm0..xmm15 (..xmm7 on i386) from coredump.");
X86_REGISTER_TEST(x86_xstate_mm_read, TEST_XSTATE, FPREGS_MM, TEST_GETREGS,
"Test reading mm0..mm7 registers from debugged program "
@@ -3450,18 +3530,24 @@
X86_REGISTER_TEST(x86_xstate_mm_write, TEST_XSTATE, FPREGS_MM, TEST_SETREGS,
"Test writing mm0..mm7 registers into debugged program "
"via PT_SETXSTATE.");
+X86_REGISTER_TEST(x86_xstate_mm_core, TEST_XSTATE, FPREGS_MM, TEST_COREDUMP,
+ "Test reading mm0..mm7 registers from core dump via XSTATE note.");
X86_REGISTER_TEST(x86_xstate_xmm_read, TEST_XSTATE, FPREGS_XMM, TEST_GETREGS,
"Test reading xmm0..xmm15 (..xmm7 on i386) from debugged program "
"via PT_GETXSTATE.");
X86_REGISTER_TEST(x86_xstate_xmm_write, TEST_XSTATE, FPREGS_XMM, TEST_SETREGS,
"Test writing xmm0..xmm15 (..xmm7 on i386) into debugged program "
"via PT_SETXSTATE.");
+X86_REGISTER_TEST(x86_xstate_xmm_core, TEST_XSTATE, FPREGS_XMM, TEST_COREDUMP,
+ "Test reading xmm0..xmm15 (..xmm7 on i386) from coredump via XSTATE note.");
X86_REGISTER_TEST(x86_xstate_ymm_read, TEST_XSTATE, FPREGS_YMM, TEST_GETREGS,
"Test reading ymm0..ymm15 (..ymm7 on i386) from debugged program "
"via PT_GETXSTATE.");
X86_REGISTER_TEST(x86_xstate_ymm_write, TEST_XSTATE, FPREGS_YMM, TEST_SETREGS,
"Test writing ymm0..ymm15 (..ymm7 on i386) into debugged program "
"via PT_SETXSTATE.");
+X86_REGISTER_TEST(x86_xstate_ymm_core, TEST_XSTATE, FPREGS_YMM, TEST_COREDUMP,
+ "Test reading ymm0..ymm15 (..ymm7 on i386) from coredump via XSTATE note.");
/// ----------------------------------------------------------------------------
@@ -3530,22 +3616,31 @@
ATF_TP_ADD_TC_HAVE_DBREGS(tp, x86_cve_2018_8897); \
ATF_TP_ADD_TC(tp, x86_gpregs32_read); \
ATF_TP_ADD_TC(tp, x86_gpregs32_write); \
+ ATF_TP_ADD_TC(tp, x86_gpregs32_core); \
ATF_TP_ADD_TC(tp, x86_gpregs32_ebp_esp_read); \
ATF_TP_ADD_TC(tp, x86_gpregs32_ebp_esp_write); \
+ ATF_TP_ADD_TC(tp, x86_gpregs32_ebp_esp_core); \
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