From patchwork Fri Jul 13 13:52:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pedro Franco de Carvalho X-Patchwork-Id: 28373 Received: (qmail 100152 invoked by alias); 13 Jul 2018 13:53:39 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 100027 invoked by uid 89); 13 Jul 2018 13:53:39 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-27.3 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.2 spammy=gdb.arch, UD:arch, UD:gdb.arch X-HELO: mx0a-001b2d01.pphosted.com Received: from mx0b-001b2d01.pphosted.com (HELO mx0a-001b2d01.pphosted.com) (148.163.158.5) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 13 Jul 2018 13:53:37 +0000 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w6DDn9Lv040317 for ; Fri, 13 Jul 2018 09:53:35 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0b-001b2d01.pphosted.com with ESMTP id 2k6vpxss0t-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 13 Jul 2018 09:53:35 -0400 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 13 Jul 2018 09:53:32 -0400 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w6DDrUru2032120 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 13 Jul 2018 13:53:30 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7B9C3AE067; Fri, 13 Jul 2018 09:53:00 -0400 (EDT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2BDA5AE063; Fri, 13 Jul 2018 09:53:00 -0400 (EDT) Received: from pedro.localdomain (unknown [9.85.180.127]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP; Fri, 13 Jul 2018 09:53:00 -0400 (EDT) Received: by pedro.localdomain (Postfix, from userid 1000) id F18C83C04B1; Fri, 13 Jul 2018 10:53:24 -0300 (-03) From: Pedro Franco de Carvalho To: gdb-patches@sourceware.org Cc: uweigand@de.ibm.com, edjunior@gmail.com Subject: [PATCH 08/17] [PowerPC] Add tests for PPR and DSCR Date: Fri, 13 Jul 2018 10:52:17 -0300 In-Reply-To: <20180713135226.2321-1-pedromfc@linux.ibm.com> References: <20180713135226.2321-1-pedromfc@linux.ibm.com> x-cbid: 18071313-0072-0000-0000-0000037F8CC4 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009363; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01060763; UDB=6.00544525; IPR=6.00838682; MB=3.00022128; MTD=3.00000008; XFM=3.00000015; UTC=2018-07-13 13:53:33 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18071313-0073-0000-0000-000048B35DFF Message-Id: <20180713135226.2321-9-pedromfc@linux.ibm.com> This patch adds a testcase for GDB access to the Program Priorty Register and Data Stream Control Register. gdb/ChangeLog: YYYY-MM-DD Pedro Franco de Carvalho * gdb.arch/powerpc-ppr-dscr.c: New file. * gdb.arch/powerpc-ppr-dscr.exp: New file. --- gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c | 32 ++++++++ gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp | 110 ++++++++++++++++++++++++++++ 2 files changed, 142 insertions(+) create mode 100644 gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c create mode 100644 gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp diff --git a/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c new file mode 100644 index 0000000000..b53bf0d4d3 --- /dev/null +++ b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c @@ -0,0 +1,32 @@ +/* This test is part of GDB, the GNU debugger. + + Copyright 2018 Free Software Foundation, Inc. + + 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 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +int main (void) +{ + /* Set Load Stream Disable bit in DSCR. */ + unsigned long dscr = 0x20; + + /* This is the non-privileged SPR number to access DSCR, + available since isa 207. */ + asm volatile ("mtspr 3,%0" : : "r" (dscr)); + + /* Set PPR to low priority (010 in bits 11:13, or + 0x0008000000000000). */ + asm volatile ("or 1,1,1"); + asm volatile ("nop"); // marker + asm volatile ("nop"); +} diff --git a/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp new file mode 100644 index 0000000000..14cfa344bd --- /dev/null +++ b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp @@ -0,0 +1,110 @@ +# Copyright 2018 Free Software Foundation, Inc. + +# 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 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This file is part of the gdb testsuite. + +# Test access to special purpose registers PPR and DSCR. + +if {![istarget "powerpc*-*-linux*"]} then { + verbose "Skipping PowerPC test for PPR and DSCR registers." + return +} + +standard_testfile .c + +if {[build_executable "compile" $binfile $srcfile {debug}] == -1} { + return +} + +proc check_register_access { regname } { + global gdb_prompt + + set test "$regname register access" + gdb_test_multiple "info reg $regname" "$test" { + -re "Invalid register.*\r\n$gdb_prompt $" { + unsupported "$test" + return 0 + } + -re "\r\n$regname.*\r\n$gdb_prompt $" { + pass "$test" + return 1 + } + } + return 0 +} + +clean_restart $binfile + +if ![runto_main] { + return +} + +if {![check_register_access "ppr"]} { + return +} + +if {![check_register_access "dscr"]} { + return +} + +# Do one pass to check if the instructions in our test programs are +# available to this processor (e.g. mtspr 3, RS for accessing DSCR). +proc ppr_dscr_available {} { + global gdb_prompt + global inferior_exited_re + + set test "PPR/DSCR available to inferior" + gdb_test_multiple "continue" "" { + -re "Illegal instruction.*\r\n$gdb_prompt $" { + unsupported "$test" + return 0 + } + -re "$inferior_exited_re normally.*$gdb_prompt $" { + pass "$test" + return 1 + } + } + return 0 +} + +if {![ppr_dscr_available]} { + return +} + +# Now do the actual test +clean_restart $binfile + +runto_main + +set bp_line [gdb_get_line_number "marker"] + +gdb_breakpoint ${srcfile}:${bp_line} + +gdb_continue_to_breakpoint "continue to marker" + +# At the breakpoint the inferior should have set the +# registers to these expected values. +gdb_test "info reg dscr" "dscr.*0x0*20\[ \t\]+.*" +gdb_test "info reg ppr" "ppr.*0x0*8000000000000\[ \t\]+.*" + +# Set Store Stream Enable in DSCR and set PPR to the medium-low +# priority. +gdb_test_no_output "set \$dscr = 0x8" +gdb_test_no_output "set \$ppr = 0xC000000000000" + +gdb_test "stepi" "asm.*" + +gdb_test "info reg dscr" "dscr.*0x0*8+\[ \t\]+.*" +gdb_test "info reg ppr" "ppr.*0x0*\[cC\]000000000000\[ \t\]+.*"