From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933952AbbJHOvZ (ORCPT ); Thu, 8 Oct 2015 10:51:25 -0400 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:47103 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933622AbbJHOvU (ORCPT ); Thu, 8 Oct 2015 10:51:20 -0400 X-Helo: d23dlp02.au.ibm.com X-MailFrom: khandual@linux.vnet.ibm.com X-RcptTo: linux-kernel@vger.kernel.org From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Cc: peterz@infradead.org, akpm@linux-foundation.org, tglx@linutronix.de, james.hogan@imgtec.com, avagin@openvz.org, Paul.Clothier@imgtec.com, palves@redhat.com, oleg@redhat.com, dhowells@redhat.com, davej@redhat.com, davem@davemloft.net, mikey@neuling.org, benh@kernel.crashing.org, sukadev@linux.vnet.ibm.com, mpe@ellerman.id.au, sam.bobroff@au1.ibm.com, kirjanov@gmail.com, shuahkh@osg.samsung.com, Ulrich.Weigand@de.ibm.com, emachado@linux.vnet.ibm.com Subject: [PATCH V9 26/28] selftests, powerpc: Add ptrace tests for VSX, VMX registers in suspended TM Date: Thu, 8 Oct 2015 20:17:47 +0530 Message-Id: <1444315669-23487-27-git-send-email-khandual@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1444315669-23487-1-git-send-email-khandual@linux.vnet.ibm.com> References: <1444315669-23487-1-git-send-email-khandual@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15100814-0021-0000-0000-000001FAFF0C Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds ptrace interface test for VSX, VMX registers inside suspended TM context. Signed-off-by: Anshuman Khandual --- tools/testing/selftests/powerpc/ptrace/Makefile | 3 +- .../selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c | 212 +++++++++++++++++++++ 2 files changed, 214 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c diff --git a/tools/testing/selftests/powerpc/ptrace/Makefile b/tools/testing/selftests/powerpc/ptrace/Makefile index 092fbef..ea57351 100644 --- a/tools/testing/selftests/powerpc/ptrace/Makefile +++ b/tools/testing/selftests/powerpc/ptrace/Makefile @@ -1,5 +1,6 @@ TEST_PROGS := ptrace-ebb 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 all: $(TEST_PROGS) 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 0000000..e52a309 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c @@ -0,0 +1,212 @@ +/* + * 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 "ptrace-vsx.h" + +int shm_id; +volatile int *cptr, *pptr; + +extern void loadvsx(void *p, int tmp); +extern void storevsx(void *p, int tmp); + +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) +{ + while(!cptr[1]); +} + +void tm_spd_vsx(void) +{ + unsigned long result, texasr; + int ret; + + cptr = (int *)shmat(shm_id, NULL, 0); +trans: + 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); + } + exit(1); +} + +int trace_tm_spd_vsx(pid_t child) +{ + unsigned long vsx[VSX_MAX]; + unsigned long vmx[VMX_MAX + 2][2]; + int ret; + + sleep(1); + ret = start_trace(child); + if (ret) + return TEST_FAIL; + + ret = show_vsx(child, vsx); + if (ret) + return TEST_FAIL; + + ret = validate_vsx(vsx, fp_load); + if (ret) + return TEST_FAIL; + + ret = show_vmx(child, vmx); + if (ret) + return TEST_FAIL; + + ret = validate_vmx(vmx, fp_load); + if (ret) + return TEST_FAIL; + + ret = show_vsx_ckpt(child, vsx); + if (ret) + return TEST_FAIL; + + ret = validate_vsx(vsx, fp_load_ckpt); + if (ret) + return TEST_FAIL; + + ret = show_vmx_ckpt(child, vmx); + if (ret) + return TEST_FAIL; + + ret = validate_vmx(vmx, fp_load_ckpt); + if (ret) + return TEST_FAIL; + + memset(vsx, 0, sizeof(vsx)); + memset(vmx, 0, sizeof(vmx)); + + load_vsx_vmx(fp_load_ckpt_new, vsx, vmx); + + ret = write_vsx_ckpt(child, vsx); + if (ret) + return TEST_FAIL; + + ret = write_vmx_ckpt(child, vmx); + if (ret) + return TEST_FAIL; + + ret = stop_trace(child); + if (ret) + return TEST_FAIL; + + return TEST_PASS; +} + +int ptrace_tm_spd_vsx(void) +{ + pid_t pid; + int ret, status, i; + + SKIP_IF(!((long)get_auxv_entry(AT_HWCAP2) & PPC_FEATURE2_HTM)); + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 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); + ret = trace_tm_spd_vsx(pid); + if (ret) { + kill(pid, SIGKILL); + return TEST_FAIL; + } + + pptr[0] = 1; + pptr[1] = 1; + shmdt((void *)pptr); + ret = wait(&status); + if (ret != pid) { + printf("Child's exit status not captured\n"); + return TEST_FAIL; + } + + if (WIFEXITED(status)) { + if(WEXITSTATUS(status)) + return TEST_FAIL; + } + return TEST_PASS; + } + return TEST_PASS; +} + +int main(int argc, char *argv[]) +{ + return test_harness(ptrace_tm_spd_vsx, "ptrace_tm_spd_vsx"); +} -- 2.1.0