From patchwork Tue May 19 15:08:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 473954 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 75E1B140D58 for ; Wed, 20 May 2015 01:21:18 +1000 (AEST) Received: from ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 5BD661A1A60 for ; Wed, 20 May 2015 01:21:18 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 671051A0859 for ; Wed, 20 May 2015 01:08:52 +1000 (AEST) Received: by ozlabs.org (Postfix) id 3310B140D58; Wed, 20 May 2015 01:08:52 +1000 (AEST) Delivered-To: linuxppc-dev@ozlabs.org Received: from e28smtp04.in.ibm.com (e28smtp04.in.ibm.com [122.248.162.4]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 95FFF140DEE for ; Wed, 20 May 2015 01:08:51 +1000 (AEST) Received: from /spool/local by e28smtp04.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 19 May 2015 20:38:48 +0530 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id A3C6A125804F for ; Tue, 19 May 2015 20:41:01 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay02.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t4JF8c3g58064944 for ; Tue, 19 May 2015 20:38:39 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t4JF8XJM028938 for ; Tue, 19 May 2015 20:38:37 +0530 Received: from localhost.in.ibm.com ([9.124.158.205]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t4JF8OHk027580; Tue, 19 May 2015 20:38:33 +0530 From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH V8 26/28] selftests, powerpc: Add ptrace tests for VSX, VMX registers in suspended TM Date: Tue, 19 May 2015 20:38:22 +0530 Message-Id: <1432048104-4695-27-git-send-email-khandual@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1432048104-4695-1-git-send-email-khandual@linux.vnet.ibm.com> References: <1432048104-4695-1-git-send-email-khandual@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15051915-0013-0000-0000-00000550E466 Cc: shuahkh@osg.samsung.com, mikey@neuling.org, james.hogan@imgtec.com, avagin@openvz.org, Paul.Clothier@imgtec.com, peterz@infradead.org, palves@redhat.com, nacc@linux.vnet.ibm.com, emachado@linux.vnet.ibm.com, oleg@redhat.com, davem@davemloft.net, dhowells@redhat.com, Ulrich.Weigand@de.ibm.com, kirjanov@gmail.com, davej@redhat.com, akpm@linux-foundation.org, sukadev@linux.vnet.ibm.com, tglx@linutronix.de, sam.bobroff@au1.ibm.com X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 | 211 +++++++++++++++++++++ 2 files changed, 213 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..1861199 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c @@ -0,0 +1,211 @@ +/* + * Ptrace test for VMX/VSX registers in the TM Suspend context + * + * Copyright 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; + + 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"); +}