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authorAnshuman Khandual <khandual@linux.vnet.ibm.com>2016-09-30 10:33:01 +0800
committerMichael Ellerman <mpe@ellerman.id.au>2016-11-17 17:11:52 +1100
commita18b55bf51b32136fb9c5190b1cbf86c75117ead (patch)
treed647afffa176c28ad3997c4e23ada1cf255c2290 /tools/testing/selftests
parentselftests/powerpc: Add ptrace tests for VSX, VMX registers in TM (diff)
downloadlinux-dev-a18b55bf51b32136fb9c5190b1cbf86c75117ead.tar.xz
linux-dev-a18b55bf51b32136fb9c5190b1cbf86c75117ead.zip
selftests/powerpc: Add ptrace tests for VSX, VMX registers in suspended TM
This patch adds ptrace interface test for VSX, VMX registers inside suspended TM context. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r--tools/testing/selftests/powerpc/ptrace/.gitignore1
-rw-r--r--tools/testing/selftests/powerpc/ptrace/Makefile3
-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c185
3 files changed, 188 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/ptrace/.gitignore b/tools/testing/selftests/powerpc/ptrace/.gitignore
index f1f3055ca647..49439538e234 100644
--- a/tools/testing/selftests/powerpc/ptrace/.gitignore
+++ b/tools/testing/selftests/powerpc/ptrace/.gitignore
@@ -6,3 +6,4 @@ ptrace-tm-tar
ptrace-tm-spd-tar
ptrace-vsx
ptrace-tm-vsx
+ptrace-tm-spd-vsx
diff --git a/tools/testing/selftests/powerpc/ptrace/Makefile b/tools/testing/selftests/powerpc/ptrace/Makefile
index f82cfe12aaeb..f3f4129b3755 100644
--- a/tools/testing/selftests/powerpc/ptrace/Makefile
+++ b/tools/testing/selftests/powerpc/ptrace/Makefile
@@ -1,5 +1,6 @@
TEST_PROGS := ptrace-gpr ptrace-tm-gpr ptrace-tm-spd-gpr \
- ptrace-tar ptrace-tm-tar ptrace-tm-spd-tar ptrace-vsx ptrace-tm-vsx
+ ptrace-tar ptrace-tm-tar ptrace-tm-spd-tar ptrace-vsx ptrace-tm-vsx \
+ ptrace-tm-spd-vsx
include ../../lib.mk
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
new file mode 100644
index 000000000000..0df3c23b7888
--- /dev/null
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
@@ -0,0 +1,185 @@
+/*
+ * Ptrace test for VMX/VSX registers in the TM Suspend context
+ *
+ * Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include "ptrace.h"
+#include "tm.h"
+#include "ptrace-vsx.h"
+
+int shm_id;
+int *cptr, *pptr;
+
+unsigned long fp_load[VEC_MAX];
+unsigned long fp_load_new[VEC_MAX];
+unsigned long fp_store[VEC_MAX];
+unsigned long fp_load_ckpt[VEC_MAX];
+unsigned long fp_load_ckpt_new[VEC_MAX];
+
+__attribute__((used)) void load_vsx(void)
+{
+ loadvsx(fp_load, 0);
+}
+
+__attribute__((used)) void load_vsx_new(void)
+{
+ loadvsx(fp_load_new, 0);
+}
+
+__attribute__((used)) void load_vsx_ckpt(void)
+{
+ loadvsx(fp_load_ckpt, 0);
+}
+
+__attribute__((used)) void wait_parent(void)
+{
+ cptr[2] = 1;
+ while (!cptr[1])
+ asm volatile("" : : : "memory");
+}
+
+void tm_spd_vsx(void)
+{
+ unsigned long result, texasr;
+ int ret;
+
+ cptr = (int *)shmat(shm_id, NULL, 0);
+
+trans:
+ cptr[2] = 0;
+ asm __volatile__(
+ "bl load_vsx_ckpt;"
+
+ "1: ;"
+ "tbegin.;"
+ "beq 2f;"
+
+ "bl load_vsx_new;"
+ "tsuspend.;"
+ "bl load_vsx;"
+ "bl wait_parent;"
+ "tresume.;"
+
+ "tend.;"
+ "li 0, 0;"
+ "ori %[res], 0, 0;"
+ "b 3f;"
+
+ "2: ;"
+ "li 0, 1;"
+ "ori %[res], 0, 0;"
+ "mfspr %[texasr], %[sprn_texasr];"
+
+ "3: ;"
+ : [res] "=r" (result), [texasr] "=r" (texasr)
+ : [fp_load] "r" (fp_load), [fp_load_ckpt] "r" (fp_load_ckpt),
+ [sprn_texasr] "i" (SPRN_TEXASR)
+ : "memory", "r0", "r1", "r2", "r3", "r4",
+ "r8", "r9", "r10", "r11"
+ );
+
+ if (result) {
+ if (!cptr[0])
+ goto trans;
+ shmdt((void *)cptr);
+
+ storevsx(fp_store, 0);
+ ret = compare_vsx_vmx(fp_store, fp_load_ckpt_new);
+ if (ret)
+ exit(1);
+ exit(0);
+ }
+ shmdt((void *)cptr);
+ exit(1);
+}
+
+int trace_tm_spd_vsx(pid_t child)
+{
+ unsigned long vsx[VSX_MAX];
+ unsigned long vmx[VMX_MAX + 2][2];
+
+ FAIL_IF(start_trace(child));
+ FAIL_IF(show_vsx(child, vsx));
+ FAIL_IF(validate_vsx(vsx, fp_load));
+ FAIL_IF(show_vmx(child, vmx));
+ FAIL_IF(validate_vmx(vmx, fp_load));
+ FAIL_IF(show_vsx_ckpt(child, vsx));
+ FAIL_IF(validate_vsx(vsx, fp_load_ckpt));
+ FAIL_IF(show_vmx_ckpt(child, vmx));
+ FAIL_IF(validate_vmx(vmx, fp_load_ckpt));
+
+ memset(vsx, 0, sizeof(vsx));
+ memset(vmx, 0, sizeof(vmx));
+
+ load_vsx_vmx(fp_load_ckpt_new, vsx, vmx);
+
+ FAIL_IF(write_vsx_ckpt(child, vsx));
+ FAIL_IF(write_vmx_ckpt(child, vmx));
+
+ pptr[0] = 1;
+ pptr[1] = 1;
+ FAIL_IF(stop_trace(child));
+
+ return TEST_PASS;
+}
+
+int ptrace_tm_spd_vsx(void)
+{
+ pid_t pid;
+ int ret, status, i;
+
+ SKIP_IF(!have_htm());
+ shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT);
+
+ for (i = 0; i < 128; i++) {
+ fp_load[i] = 1 + rand();
+ fp_load_new[i] = 1 + 2 * rand();
+ fp_load_ckpt[i] = 1 + 3 * rand();
+ fp_load_ckpt_new[i] = 1 + 4 * rand();
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ perror("fork() failed");
+ return TEST_FAIL;
+ }
+
+ if (pid == 0)
+ tm_spd_vsx();
+
+ if (pid) {
+ pptr = (int *)shmat(shm_id, NULL, 0);
+ while (!pptr[2])
+ asm volatile("" : : : "memory");
+
+ ret = trace_tm_spd_vsx(pid);
+ if (ret) {
+ kill(pid, SIGKILL);
+ shmdt((void *)pptr);
+ shmctl(shm_id, IPC_RMID, NULL);
+ return TEST_FAIL;
+ }
+
+ shmdt((void *)pptr);
+ ret = wait(&status);
+ shmctl(shm_id, IPC_RMID, NULL);
+ if (ret != pid) {
+ printf("Child's exit status not captured\n");
+ return TEST_FAIL;
+ }
+
+ return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
+ TEST_PASS;
+ }
+ return TEST_PASS;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(ptrace_tm_spd_vsx, "ptrace_tm_spd_vsx");
+}