From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23492 invoked by alias); 25 Jul 2008 20:16:33 -0000 Received: (qmail 23357 invoked by uid 22791); 25 Jul 2008 20:16:30 -0000 X-Spam-Check-By: sourceware.org Received: from igw3.br.ibm.com (HELO igw3.br.ibm.com) (32.104.18.26) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 25 Jul 2008 20:15:57 +0000 Received: from mailhub1.br.ibm.com (unknown [9.18.232.109]) by igw3.br.ibm.com (Postfix) with ESMTP id 719F339005D for ; Fri, 25 Jul 2008 16:57:16 -0300 (BRST) Received: from d24av02.br.ibm.com (d24av02.br.ibm.com [9.18.232.47]) by mailhub1.br.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m6PKFwNK2257158 for ; Fri, 25 Jul 2008 17:15:58 -0300 Received: from d24av02.br.ibm.com (loopback [127.0.0.1]) by d24av02.br.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m6PKFrL9001658 for ; Fri, 25 Jul 2008 17:15:53 -0300 Received: from [9.18.203.75] ([9.18.203.75]) by d24av02.br.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id m6PKFqcq001631 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 25 Jul 2008 17:15:52 -0300 Subject: [PATCH-ppc 4/5] Add VSX registers testcase From: Luis Machado Reply-To: luisgpm@linux.vnet.ibm.com To: gdb-patches@sourceware.org Content-Type: text/plain Date: Fri, 25 Jul 2008 20:16:00 -0000 Message-Id: <1217016951.29012.78.camel@gargoyle> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2008-07/txt/msg00450.txt.bz2 This one adds a small testcase to check if the VSX registers are being correctly read from/written. It also tests core-file support by writting and reading VSX registers back. There is also a small additional to lib/gdb.exp to check if both the compiler and machine has VSX support. -- 2008-07-25 Luis Machado * gdb.arch/vsx-regs.c: New source file. * gdb.arch/vsx-regs.exp: New testcase. * lib/gdb.exp (skip_vsx_tests): New function. Index: gdb/testsuite/gdb.arch/vsx-regs.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gdb/testsuite/gdb.arch/vsx-regs.c 2008-07-23 12:00:24.000000000 -0700 @@ -0,0 +1,41 @@ +#include +#include + +vector unsigned int +vector_fun (vector unsigned int a, vector unsigned int b) +{ + vector unsigned int c; + a = ((vector unsigned int) vec_splat_u8(2)); + b = ((vector unsigned int) vec_splat_u8(3)); + + c = vec_add (a, b); + return c; +} + +int +main () +{ + vector unsigned int y; + vector unsigned int x; + vector unsigned int z; + int a; + + /* This line may look unnecessary but we do need it, because we want to + have a line to do a next over (so that gdb refetches the registers) + and we don't want the code to change any vector registers. + The splat operations below modify the VRs,i + so we don't want to execute them yet. */ + a = 9; + x = ((vector unsigned int) vec_splat_u8 (-2)); + y = ((vector unsigned int) vec_splat_u8 (1)); + + z = vector_fun (x, y); + x = vec_sld (x,y,2); + + x = vec_add (x, ((vector unsigned int){5,6,7,8})); + z = (vector unsigned int) vec_splat_u8 ( -2); + y = vec_add (x, z); + z = (vector unsigned int) vec_cmpeq (x,y); + + return 0; +} Index: gdb/testsuite/gdb.arch/vsx-regs.exp =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gdb/testsuite/gdb.arch/vsx-regs.exp 2008-07-23 12:42:46.000000000 -0700 @@ -0,0 +1,193 @@ +# Copyright (C) 2008 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 . +# +# Please email any bugs, comments, and/or additions to this file to: +# bug-gdb@prep.ai.mit.edu +# + +# Tests for Powerpc AltiVec register setting and fetching + +if $tracelevel then { + strace $tracelevel +} + +# +# Test the use of VSX registers, for Powerpc. +# + +set prms_id 0 +set bug_id 0 + +if {![istarget "powerpc*"] || [skip_vsx_tests]} then { + verbose "Skipping vsx register tests." + verbose -log "Skipping vsx register tests." + return +} + +set testfile "vsx-regs" +set binfile ${objdir}/${subdir}/${testfile} +set srcfile ${testfile}.c + +set compile_flags {debug nowarnings quiet} +if [get_compiler_info $binfile] { + warning "get_compiler failed" + return -1 +} + +if [test_compiler_info gcc*] { + set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec" +} elseif [test_compiler_info xlc*] { + set compile_flags "$compile_flags additional_flags=-qaltivec" +} else { + warning "unknown compiler" + return -1 +} + +if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } { + untested vsx-regs.exp + return -1 +} + +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +# Run to `main' where we begin our tests. + +if ![runto_main] then { + gdb_suppress_tests +} + +# Data sets used throughout the test + +set vector_register1 ".uint128 = 0x3ff4cccccccccccc0000000000000000, v4_float = .0x1, 0xf99999a0, 0x0, 0x0., v4_int32 = .0x3ff4cccc, 0xcccccccc, 0x0, 0x0., v8_int16 = .0x3ff4, 0xcccc, 0xcccc, 0xcccc, 0x0, 0x0, 0x0, 0x0., v16_int8 = .0x3f, 0xf4, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0.." + +set vector_register2 "uint128 = 0xdeadbeefdeadbeefdeadbeefdeadbeef, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef., v8_int16 = .0xdead, 0xbeef, 0xdead, 0xbeef, 0xdead, 0xbeef, 0xdead, 0xbeef., v16_int8 = .0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef, 0xde, 0xad, 0xbe, 0xef.." + +set vector_register3 ".uint128 = 0x00000001000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.." + +set float_register ".raw 0xdeadbeefdeadbeef." + +# First run the F0~F31/VS0~VS31 tests + +# 1: Set F0~F31 registers and check if it reflects on VS0~VS31. +for {set i 0} {$i < 32} {incr i 1} { + send_gdb "set \$f$i = 1\.3" +} + +for {set i 0} {$i < 32} {incr i 1} { + gdb_test "info reg vs$i" "vs$i.*$vector_register1" "info reg vs$i (doubleword 0)" +} + +# 2: Set VS0~VS31 registers and check if it reflects on F0~F31. +for {set i 0} {$i < 32} {incr i 1} { + for {set j 0} {$j < 4} {incr j 1} { + send_gdb "set \$vs$i.v4_int32\[$j\] = 0xdeadbeef" + } +} + +for {set i 0} {$i < 32} {incr i 1} { + gdb_test "info reg f$i" "f$i.*$float_register" "info reg f$i" +} + +for {set i 0} {$i < 32} {incr i 1} { + gdb_test "info reg vs$i" "vs$i.*$vector_register2" "info reg vs$i (doubleword 1)" +} + +# Now run the VR0~VR31/VS32~VS63 tests + +# 1: Set VR0~VR31 registers and check if it reflects on VS32~VS63. +for {set i 0} {$i < 32} {incr i 1} { + for {set j 0} {$j < 4} {incr j 1} { + send_gdb "set \$vr$i.v4_int32\[$j\] = 1" + } +} + +for {set i 32} {$i < 64} {incr i 1} { + gdb_test "info reg vs$i" "vs$i.*$vector_register3" "info reg vs$i" +} +# 2: Set VS32~VS63 registers and check if it reflects on VR0~VR31. +for {set i 32} {$i < 64} {incr i 1} { + for {set j 0} {$j < 4} {incr j 1} { + send_gdb "set \$vs$i.v4_int32\[$j\] = 1" + } +} + +for {set i 0} {$i < 32} {incr i 1} { + gdb_test "info reg vr$i" "vr$i.*$vector_register3" "info reg vr$i" +} + +set escapedfilename [string_to_regexp ${objdir}/${subdir}/vsx-core.test] + +set core_supported 0 + +gdb_test_multiple "gcore ${objdir}/${subdir}/vsx-core.test" \ + "Save a VSX-enabled corefile" \ +{ + -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" { + pass "Save a VSX-enabled corefile" + global core_supported + set core_supported 1 + } + -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" { + unsupported "Save a VSX-enabled corefile" + global core_supported + set core_supported 0 + } +} + +if {!$core_supported} { + return -1 +} + +gdb_exit +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +gdb_test_multiple "core ${objdir}/${subdir}/vsx-core.test" \ + "re-load generated corefile" \ +{ + -re ".* is not a core dump:.*$gdb_prompt $" { + fail "re-load generated corefile (bad file format)" + # No use proceeding from here. + return; + } + -re ".*: No such file or directory.*$gdb_prompt $" { + fail "re-load generated corefile (file not found)" + # No use proceeding from here. + return; + } + -re ".*Couldn't find .* registers in core file.*$gdb_prompt $" { + fail "re-load generated corefile (incomplete note section)" + } + -re "Core was generated by .*$gdb_prompt $" { + pass "re-load generated corefile" + } + -re ".*$gdb_prompt $" { + fail "re-load generated corefile" + } + timeout { + fail "re-load generated corefile (timeout)" + } +} + +for {set i 0} {$i < 32} {incr i 1} { + gdb_test "info reg vs$i" "vs$i.*$vector_register2" "Restore vs$i from core file" +} + +for {set i 32} {$i < 64} {incr i 1} { + gdb_test "info reg vs$i" "vs$i.*$vector_register3" "Restore vs$i from core file" +} Index: gdb/testsuite/lib/gdb.exp =================================================================== --- gdb.orig/testsuite/lib/gdb.exp 2008-07-23 11:53:09.000000000 -0700 +++ gdb/testsuite/lib/gdb.exp 2008-07-23 12:00:24.000000000 -0700 @@ -1349,6 +1349,92 @@ return $skip_vmx_tests_saved } +# Run a test on the target to see if it supports vmx hardware. Return 0 if so, +# 1 if it does not. Based on 'check_vmx_hw_available' from the GCC testsuite. + +proc skip_vsx_tests {} { + global skip_vsx_tests_saved + global srcdir subdir gdb_prompt + + # Use the cached value, if it exists. + set me "skip_vsx_tests" + if [info exists skip_vmx_tests_saved] { + verbose "$me: returning saved $skip_vsx_tests_saved" 2 + return $skip_vsx_tests_saved + } + + # Some simulators are known to not support Altivec instructions, so + # they won't support VSX instructions as well. + if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } { + verbose "$me: target known to not support VSX, returning 1" 2 + return [set skip_vsx_tests_saved 1] + } + + # Make sure we have a compiler that understands altivec. + set compile_flags {debug nowarnings quiet} + if [get_compiler_info not-used] { + warning "Could not get compiler info" + return 1 + } + if [test_compiler_info gcc*] { + set compile_flags "$compile_flags additional_flags=-maltivec" + } elseif [test_compiler_info xlc*] { + set compile_flags "$compile_flags additional_flags=-qaltivec" + } else { + verbose "Could not compile with vsx support, returning 1" 2 + return 1 + } + + set src vsx[pid].c + set exe vsx[pid].x + + set f [open $src "w"] + puts $f "int main() {" + puts $f "#ifdef __MACH__" + puts $f " asm volatile (\"lxvd2x v0,v0,v0\");" + puts $f "#else" + puts $f " asm volatile (\"lxvd2x 0,0,0\");" + puts $f "#endif" + puts $f " return 0; }" + close $f + + verbose "$me: compiling testfile $src" 2 + set lines [gdb_compile $src $exe executable $compile_flags] + file delete $src + + if ![string match "" $lines] then { + verbose "$me: testfile compilation failed, returning 1" 2 + return [set skip_vsx_tests_saved 1] + } + + # No error message, compilation succeeded so now run it via gdb. + + gdb_exit + gdb_start + gdb_reinitialize_dir $srcdir/$subdir + gdb_load "$exe" + gdb_run_cmd + gdb_expect { + -re ".*Illegal instruction.*${gdb_prompt} $" { + verbose -log "\n$me VSX hardware not detected" + set skip_vsx_tests_saved 1 + } + -re ".*Program exited normally.*${gdb_prompt} $" { + verbose -log "\n$me: VSX hardware detected" + set skip_vsx_tests_saved 0 + } + default { + warning "\n$me: default case taken" + set skip_vsx_tests_saved 1 + } + } + gdb_exit + remote_file build delete $exe + + verbose "$me: returning $skip_vsx_tests_saved" 2 + return $skip_vsx_tests_saved +} + # Skip all the tests in the file if you are not on an hppa running # hpux target.