Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756401AbbESPKF (ORCPT ); Tue, 19 May 2015 11:10:05 -0400 Received: from e28smtp09.in.ibm.com ([122.248.162.9]:33992 "EHLO e28smtp09.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756366AbbESPJ6 (ORCPT ); Tue, 19 May 2015 11:09:58 -0400 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, nacc@linux.vnet.ibm.com Subject: [PATCH V8 19/28] selftests, powerpc: Add ptrace tests for GPR/FPR registers in TM Date: Tue, 19 May 2015 20:38:15 +0530 Message-Id: <1432048104-4695-20-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: 15051915-0033-0000-0000-000005DADD31 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7468 Lines: 327 This patch adds ptrace interface test for GPR/FPR registers inside TM context. This adds ptrace interface based helper functions related to checkpointed GPR/FPR access. Signed-off-by: Anshuman Khandual --- tools/testing/selftests/powerpc/ptrace/Makefile | 3 +- .../selftests/powerpc/ptrace/ptrace-tm-gpr.c | 287 +++++++++++++++++++++ 2 files changed, 289 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c diff --git a/tools/testing/selftests/powerpc/ptrace/Makefile b/tools/testing/selftests/powerpc/ptrace/Makefile index dfeb36e..4d7cbe8 100644 --- a/tools/testing/selftests/powerpc/ptrace/Makefile +++ b/tools/testing/selftests/powerpc/ptrace/Makefile @@ -1,8 +1,9 @@ -TEST_PROGS := ptrace-ebb ptrace-gpr +TEST_PROGS := ptrace-ebb ptrace-gpr ptrace-tm-gpr all: $(TEST_PROGS) $(TEST_PROGS): ../harness.c ptrace.S ptrace-ebb: ../pmu/event.c ../pmu/lib.c ../pmu/ebb/ebb_handler.S ../pmu/ebb/busy_loop.S + clean: rm -f $(TEST_PROGS) *.o diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c new file mode 100644 index 0000000..a94c413 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c @@ -0,0 +1,287 @@ +/* + * Ptrace test for GPR/FPR registers in TM 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-gpr.h" + +/* Tracer and Tracee Shared Data */ +int shm_id; +volatile int *cptr, *pptr; + +extern void store_gpr(unsigned long *addr); +extern void store_fpr(float *addr); + +float a = FPR_1; +float b = FPR_2; +float c = FPR_3; + +void tm_gpr(void) +{ + unsigned long gpr_buf[18]; + unsigned long result, texasr; + float fpr_buf[32]; + + printf("Starting the child\n"); + cptr = (int *)shmat(shm_id, NULL, 0); + +trans: + asm __volatile__( + + "li 14, %[gpr_1];" + "li 15, %[gpr_1];" + "li 16, %[gpr_1];" + "li 17, %[gpr_1];" + "li 18, %[gpr_1];" + "li 19, %[gpr_1];" + "li 20, %[gpr_1];" + "li 21, %[gpr_1];" + "li 22, %[gpr_1];" + "li 23, %[gpr_1];" + "li 24, %[gpr_1];" + "li 25, %[gpr_1];" + "li 26, %[gpr_1];" + "li 27, %[gpr_1];" + "li 28, %[gpr_1];" + "li 29, %[gpr_1];" + "li 30, %[gpr_1];" + "li 31, %[gpr_1];" + + "lfs 0, 0(%[flt_1]);" + "lfs 1, 0(%[flt_1]);" + "lfs 2, 0(%[flt_1]);" + "lfs 3, 0(%[flt_1]);" + "lfs 4, 0(%[flt_1]);" + "lfs 5, 0(%[flt_1]);" + "lfs 6, 0(%[flt_1]);" + "lfs 7, 0(%[flt_1]);" + "lfs 8, 0(%[flt_1]);" + "lfs 9, 0(%[flt_1]);" + "lfs 10, 0(%[flt_1]);" + "lfs 11, 0(%[flt_1]);" + "lfs 12, 0(%[flt_1]);" + "lfs 13, 0(%[flt_1]);" + "lfs 14, 0(%[flt_1]);" + "lfs 15, 0(%[flt_1]);" + "lfs 16, 0(%[flt_1]);" + "lfs 17, 0(%[flt_1]);" + "lfs 18, 0(%[flt_1]);" + "lfs 19, 0(%[flt_1]);" + "lfs 20, 0(%[flt_1]);" + "lfs 21, 0(%[flt_1]);" + "lfs 22, 0(%[flt_1]);" + "lfs 23, 0(%[flt_1]);" + "lfs 24, 0(%[flt_1]);" + "lfs 25, 0(%[flt_1]);" + "lfs 26, 0(%[flt_1]);" + "lfs 27, 0(%[flt_1]);" + "lfs 28, 0(%[flt_1]);" + "lfs 29, 0(%[flt_1]);" + "lfs 30, 0(%[flt_1]);" + "lfs 31, 0(%[flt_1]);" + + "1: ;" + TBEGIN + "beq 2f;" + + "li 14, %[gpr_2];" + "li 15, %[gpr_2];" + "li 16, %[gpr_2];" + "li 17, %[gpr_2];" + "li 18, %[gpr_2];" + "li 19, %[gpr_2];" + "li 20, %[gpr_2];" + "li 21, %[gpr_2];" + "li 22, %[gpr_2];" + "li 23, %[gpr_2];" + "li 24, %[gpr_2];" + "li 25, %[gpr_2];" + "li 26, %[gpr_2];" + "li 27, %[gpr_2];" + "li 28, %[gpr_2];" + "li 29, %[gpr_2];" + "li 30, %[gpr_2];" + "li 31, %[gpr_2];" + + + "lfs 0, 0(%[flt_2]);" + "lfs 1, 0(%[flt_2]);" + "lfs 2, 0(%[flt_2]);" + "lfs 3, 0(%[flt_2]);" + "lfs 4, 0(%[flt_2]);" + "lfs 5, 0(%[flt_2]);" + "lfs 6, 0(%[flt_2]);" + "lfs 7, 0(%[flt_2]);" + "lfs 8, 0(%[flt_2]);" + "lfs 9, 0(%[flt_2]);" + "lfs 10, 0(%[flt_2]);" + "lfs 11, 0(%[flt_2]);" + "lfs 12, 0(%[flt_2]);" + "lfs 13, 0(%[flt_2]);" + "lfs 14, 0(%[flt_2]);" + "lfs 15, 0(%[flt_2]);" + "lfs 16, 0(%[flt_2]);" + "lfs 17, 0(%[flt_2]);" + "lfs 18, 0(%[flt_2]);" + "lfs 19, 0(%[flt_2]);" + "lfs 20, 0(%[flt_2]);" + "lfs 21, 0(%[flt_2]);" + "lfs 22, 0(%[flt_2]);" + "lfs 23, 0(%[flt_2]);" + "lfs 24, 0(%[flt_2]);" + "lfs 25, 0(%[flt_2]);" + "lfs 26, 0(%[flt_2]);" + "lfs 27, 0(%[flt_2]);" + "lfs 28, 0(%[flt_2]);" + "lfs 29, 0(%[flt_2]);" + "lfs 30, 0(%[flt_2]);" + "lfs 31, 0(%[flt_2]);" + TSUSPEND + TRESUME + "b .;" + + TEND + "li 0, 0;" + "ori %[res], 0, 0;" + "b 3f;" + + /* Transaction abort handler */ + "2: ;" + "li 0, 1;" + "ori %[res], 0, 0;" + "mfspr %[texasr], %[sprn_texasr];" + + "3: ;" + :[res] "=r" (result), [texasr] "=r" (texasr) + :[gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2), [sprn_texasr] "i" (SPRN_TEXASR), + [flt_1] "r" (&a), [flt_2] "r" (&b) + : "memory", "r6", "r7", "r8", "r9", "r10", + "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", + "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" + ); + + if (result) { + if (!cptr[0]) + goto trans; + + store_gpr(gpr_buf); + store_fpr(fpr_buf); + + if (validate_gpr(gpr_buf, GPR_3)) + exit(1); + + if (validate_fpr_float(fpr_buf, c)) + exit(1); + exit(0); + } + exit(1); +} + +int trace_tm_gpr(pid_t child) +{ + unsigned long gpr[18]; + unsigned long fpr[32]; + int ret; + + sleep(1); + ret = start_trace(child); + if (ret) + return TEST_FAIL; + + ret = show_gpr(child, gpr); + if (ret) + return TEST_FAIL; + + ret = validate_gpr(gpr, GPR_2); + if (ret) + return TEST_FAIL; + + ret = show_fpr(child, fpr); + if (ret) + return TEST_FAIL; + + ret = validate_fpr(fpr, FPR_2_REP); + if (ret) + return TEST_FAIL; + + ret = show_ckpt_fpr(child, fpr); + if (ret) + return TEST_FAIL; + + ret = validate_fpr(fpr, FPR_1_REP); + if (ret) + return TEST_FAIL; + + ret = show_ckpt_gpr(child, gpr); + if (ret) + return TEST_FAIL; + + ret = validate_gpr(gpr, GPR_1); + if (ret) + return TEST_FAIL; + + ret = write_ckpt_gpr(child, GPR_3); + if (ret) + return TEST_FAIL; + + ret = write_ckpt_fpr(child, FPR_3_REP); + if (ret) + return TEST_FAIL; + + ret = stop_trace(child); + if (ret) + return TEST_FAIL; + + return TEST_PASS; +} + +int ptrace_tm_gpr(void) +{ + pid_t pid; + int ret, status; + + shm_id = shmget(IPC_PRIVATE, sizeof(int) * 1, 0777|IPC_CREAT); + pid = fork(); + if (pid < 0) { + perror("fork() failed"); + return TEST_FAIL; + } + if (pid == 0) + tm_gpr(); + + if (pid) { + pptr = (int *)shmat(shm_id, NULL, 0); + ret = trace_tm_gpr(pid); + if (ret) { + kill(pid, SIGTERM); + return TEST_FAIL; + } + + pptr[0] = 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_gpr, "ptrace_tm_gpr"); +} -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/