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[src/trunk]: src/tests/lib/libc/sys Add tests for PT_SETREGS
details: https://anonhg.NetBSD.org/src/rev/5ce5f61dbbd3
branches: trunk
changeset: 451218:5ce5f61dbbd3
user: mgorny <mgorny%NetBSD.org@localhost>
date: Fri May 10 16:24:35 2019 +0000
description:
Add tests for PT_SETREGS
diffstat:
tests/lib/libc/sys/t_ptrace_amd64_wait.h | 230 ++++++++++++++++++++++++++++++-
tests/lib/libc/sys/t_ptrace_i386_wait.h | 186 ++++++++++++++++++++++++-
2 files changed, 412 insertions(+), 4 deletions(-)
diffs (truncated from 467 to 300 lines):
diff -r e9933f4ecb55 -r 5ce5f61dbbd3 tests/lib/libc/sys/t_ptrace_amd64_wait.h
--- a/tests/lib/libc/sys/t_ptrace_amd64_wait.h Fri May 10 09:42:46 2019 +0000
+++ b/tests/lib/libc/sys/t_ptrace_amd64_wait.h Fri May 10 16:24:35 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_amd64_wait.h,v 1.9 2019/05/06 00:08:13 christos Exp $ */
+/* $NetBSD: t_ptrace_amd64_wait.h,v 1.10 2019/05/10 16:24:35 mgorny Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -198,6 +198,117 @@
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(x86_64_regs_gp_write);
+ATF_TC_HEAD(x86_64_regs_gp_write, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Set general-purpose reg values into a debugged program via "
+ "PT_SETREGS and compare the result against expected.");
+}
+
+ATF_TC_BODY(x86_64_regs_gp_write, tc)
+{
+ const int exitval = 5;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ const int sigval = SIGTRAP;
+ int status;
+#endif
+ struct reg gpr;
+
+ const uint64_t rax = 0x0001020304050607;
+ const uint64_t rbx = 0x1011121314151617;
+ const uint64_t rcx = 0x2021222324252627;
+ const uint64_t rdx = 0x3031323334353637;
+ const uint64_t rsi = 0x4041424344454647;
+ const uint64_t rdi = 0x5051525354555657;
+ const uint64_t rsp = 0x6061626364656667;
+ const uint64_t rbp = 0x7071727374757677;
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ const uint64_t fill = 0x0F0F0F0F0F0F0F0F;
+ uint64_t v_rax, v_rbx, v_rcx, v_rdx, v_rsi, v_rdi, v_rsp, v_rbp;
+
+ DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ DPRINTF("Before running assembly from child\n");
+
+ __asm__ __volatile__(
+ /* save rsp & rbp */
+ "movq %%rsp, %4\n\t"
+ "movq %%rbp, %5\n\t"
+ "\n\t"
+ /* fill registers with clobber pattern */
+ "movq %8, %%rax\n\t"
+ "movq %8, %%rbx\n\t"
+ "movq %8, %%rcx\n\t"
+ "movq %8, %%rdx\n\t"
+ "movq %8, %%rsp\n\t"
+ "movq %8, %%rbp\n\t"
+ "movq %8, %%rsi\n\t"
+ "movq %8, %%rdi\n\t"
+ "\n\t"
+ "int3\n\t"
+ "\n\t"
+ /* swap saved & current rsp & rbp */
+ "xchgq %%rsp, %4\n\t"
+ "xchgq %%rbp, %5\n\t"
+ : "=a"(v_rax), "=b"(v_rbx), "=c"(v_rcx), "=d"(v_rdx), "=r"(v_rsp),
+ "=r"(v_rbp), "=S"(v_rsi), "=D"(v_rdi)
+ : "g"(fill)
+ :
+ );
+
+ FORKEE_ASSERT_EQ(v_rax, rax);
+ FORKEE_ASSERT_EQ(v_rbx, rbx);
+ FORKEE_ASSERT_EQ(v_rcx, rcx);
+ FORKEE_ASSERT_EQ(v_rdx, rdx);
+ FORKEE_ASSERT_EQ(v_rsi, rsi);
+ FORKEE_ASSERT_EQ(v_rdi, rdi);
+ FORKEE_ASSERT_EQ(v_rsp, rsp);
+ FORKEE_ASSERT_EQ(v_rbp, rbp);
+
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ DPRINTF("Call GETREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1);
+
+ gpr.regs[_REG_RAX] = rax;
+ gpr.regs[_REG_RBX] = rbx;
+ gpr.regs[_REG_RCX] = rcx;
+ gpr.regs[_REG_RDX] = rdx;
+ gpr.regs[_REG_RSI] = rsi;
+ gpr.regs[_REG_RDI] = rdi;
+ gpr.regs[_REG_RSP] = rsp;
+ gpr.regs[_REG_RBP] = rbp;
+
+ DPRINTF("Call SETREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_SETREGS, child, &gpr, 0) != -1);
+
+ DPRINTF("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
ATF_TC(x86_64_regs_r8_read);
ATF_TC_HEAD(x86_64_regs_r8_read, tc)
{
@@ -285,13 +396,128 @@
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(x86_64_regs_r8_write);
+ATF_TC_HEAD(x86_64_regs_r8_write, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Set r8..r15 reg values into a debugged program via "
+ "PT_SETREGS and compare the result against expected.");
+}
+
+ATF_TC_BODY(x86_64_regs_r8_write, tc)
+{
+ const int exitval = 5;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ const int sigval = SIGTRAP;
+ int status;
+#endif
+ struct reg gpr;
+
+ const uint64_t r8[] = {
+ 0x0001020304050607,
+ 0x1011121314151617,
+ 0x2021222324252627,
+ 0x3031323334353637,
+ 0x4041424344454647,
+ 0x5051525354555657,
+ 0x6061626364656667,
+ 0x7071727374757677,
+ };
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ const uint64_t fill = 0x0F0F0F0F0F0F0F0F;
+ uint64_t v_r8[8];
+
+ DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ DPRINTF("Before running assembly from child\n");
+
+ __asm__ __volatile__(
+ /* fill registers with clobber pattern */
+ "movq %1, %%r8\n\t"
+ "movq %1, %%r9\n\t"
+ "movq %1, %%r10\n\t"
+ "movq %1, %%r11\n\t"
+ "movq %1, %%r12\n\t"
+ "movq %1, %%r13\n\t"
+ "movq %1, %%r14\n\t"
+ "movq %1, %%r15\n\t"
+ "\n\t"
+ "int3\n\t"
+ "\n\t"
+ "movq %%r8, 0x00(%0)\n\t"
+ "movq %%r9, 0x08(%0)\n\t"
+ "movq %%r10, 0x10(%0)\n\t"
+ "movq %%r11, 0x18(%0)\n\t"
+ "movq %%r12, 0x20(%0)\n\t"
+ "movq %%r13, 0x28(%0)\n\t"
+ "movq %%r14, 0x30(%0)\n\t"
+ "movq %%r15, 0x38(%0)\n\t"
+ :
+ : "a"(v_r8), "m"(fill)
+ : "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
+ );
+
+ FORKEE_ASSERT_EQ(v_r8[0], r8[0]);
+ FORKEE_ASSERT_EQ(v_r8[1], r8[1]);
+ FORKEE_ASSERT_EQ(v_r8[2], r8[2]);
+ FORKEE_ASSERT_EQ(v_r8[3], r8[3]);
+ FORKEE_ASSERT_EQ(v_r8[4], r8[4]);
+ FORKEE_ASSERT_EQ(v_r8[5], r8[5]);
+ FORKEE_ASSERT_EQ(v_r8[6], r8[6]);
+ FORKEE_ASSERT_EQ(v_r8[7], r8[7]);
+
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ DPRINTF("Call GETREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1);
+
+ gpr.regs[_REG_R8] = r8[0];
+ gpr.regs[_REG_R9] = r8[1];
+ gpr.regs[_REG_R10] = r8[2];
+ gpr.regs[_REG_R11] = r8[3];
+ gpr.regs[_REG_R12] = r8[4];
+ gpr.regs[_REG_R13] = r8[5];
+ gpr.regs[_REG_R14] = r8[6];
+ gpr.regs[_REG_R15] = r8[7];
+
+ DPRINTF("Call SETREGS for the child process\n");
+ SYSCALL_REQUIRE(ptrace(PT_SETREGS, child, &gpr, 0) != -1);
+
+ DPRINTF("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
/// ----------------------------------------------------------------------------
#define ATF_TP_ADD_TCS_PTRACE_WAIT_AMD64() \
ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs1); \
ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_gp_read); \
- ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_r8_read);
+ ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_gp_write); \
+ ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_r8_read); \
+ ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_r8_write);
#else
#define ATF_TP_ADD_TCS_PTRACE_WAIT_AMD64()
#endif
diff -r e9933f4ecb55 -r 5ce5f61dbbd3 tests/lib/libc/sys/t_ptrace_i386_wait.h
--- a/tests/lib/libc/sys/t_ptrace_i386_wait.h Fri May 10 09:42:46 2019 +0000
+++ b/tests/lib/libc/sys/t_ptrace_i386_wait.h Fri May 10 16:24:35 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_i386_wait.h,v 1.7 2019/05/06 00:08:13 christos Exp $ */
+/* $NetBSD: t_ptrace_i386_wait.h,v 1.8 2019/05/10 16:24:35 mgorny Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -174,6 +174,101 @@
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(i386_regs_gp_write);
+ATF_TC_HEAD(i386_regs_gp_write, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Set general-purpose reg values into a debugged program via "
+ "PT_SETREGS and compare the result against expected.");
+}
+
+ATF_TC_BODY(i386_regs_gp_write, tc)
+{
+ const int exitval = 5;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ const int sigval = SIGTRAP;
+ int status;
+#endif
+ struct reg gpr;
+
+ const uint32_t eax = 0x00010203;
+ const uint32_t ebx = 0x10111213;
+ const uint32_t ecx = 0x20212223;
+ const uint32_t edx = 0x30313233;
+ const uint32_t esi = 0x40414243;
+ const uint32_t edi = 0x50515253;
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ const uint64_t fill = 0x0F0F0F0F;
+ uint32_t v_eax, v_ebx, v_ecx, v_edx, v_esi, v_edi;
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