Module Name: src
Committed By: mgorny
Date: Sun May 5 18:16:39 UTC 2019
Modified Files:
src/tests/lib/libc/sys: t_ptrace_amd64_wait.h
Log Message:
Introduce tests for reading r8..r15 registers.
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/tests/lib/libc/sys/t_ptrace_amd64_wait.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/lib/libc/sys/t_ptrace_amd64_wait.h
diff -u src/tests/lib/libc/sys/t_ptrace_amd64_wait.h:1.7 src/tests/lib/libc/sys/t_ptrace_amd64_wait.h:1.8
--- src/tests/lib/libc/sys/t_ptrace_amd64_wait.h:1.7 Sun May 5 10:04:11 2019
+++ src/tests/lib/libc/sys/t_ptrace_amd64_wait.h Sun May 5 18:16:39 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_amd64_wait.h,v 1.7 2019/05/05 10:04:11 mgorny Exp $ */
+/* $NetBSD: t_ptrace_amd64_wait.h,v 1.8 2019/05/05 18:16:39 mgorny Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -198,12 +198,100 @@ ATF_TC_BODY(x86_64_regs_gp_read, tc)
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)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Set r8..r15 reg values from debugged program and read "
+ "them via PT_GETREGS, comparing values against expected.");
+}
+
+ATF_TC_BODY(x86_64_regs_r8_read, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ 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) {
+ 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__(
+ "movq 0x00(%%rbx), %%r8\n\t"
+ "movq 0x08(%%rbx), %%r9\n\t"
+ "movq 0x10(%%rbx), %%r10\n\t"
+ "movq 0x18(%%rbx), %%r11\n\t"
+ "movq 0x20(%%rbx), %%r12\n\t"
+ "movq 0x28(%%rbx), %%r13\n\t"
+ "movq 0x30(%%rbx), %%r14\n\t"
+ "movq 0x38(%%rbx), %%r15\n\t"
+ "int3\n\t"
+ :
+ : "b"(r8)
+ : "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
+ );
+
+ 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);
+
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R8], r8[0]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R9], r8[1]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R10], r8[2]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R11], r8[3]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R12], r8[4]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R13], r8[5]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R14], r8[6]);
+ ATF_CHECK_EQ((uint64_t)gpr.regs[_REG_R15], r8[7]);
+
+ 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_gp_read); \
+ ATF_TP_ADD_TC_HAVE_GPREGS(tp, x86_64_regs_r8_read);
#else
#define ATF_TP_ADD_TCS_PTRACE_WAIT_AMD64()
#endif
