1 # Copyright 2015-2019 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Test vector register access for s390 platforms.
18 if { ![istarget s390-*-*] && ![istarget s390x-*-* ] } {
19 verbose "Skipping s390 vector register tests."
26 # Create a temporary directory, to take a core dump there later.
27 set coredir [standard_output_file ${testfile}.d]
28 remote_exec build "rm -rf $coredir"
29 remote_exec build "mkdir $coredir"
32 if { [prepare_for_testing "failed to prepare" $testfile $srcfile \
33 [list "additional_flags=-mzarch"]] } {
38 untested "could not run to main"
42 # Run to the first vector instruction and step it. If the inferior
43 # doesn't crash, we have vector support.
45 gdb_breakpoint "check_vx"
46 gdb_continue_to_breakpoint "first vector insn"
48 gdb_test_multiple "x/i \$pc" "get PC at vector insn" {
49 -re "(0x\\S+)\\s+\\S+\\s+vlr\\s+.*$gdb_prompt $" {
50 set before_pc $expect_out(1,string)
54 gdb_test_multiple "stepi" "check for vector support" {
55 -re "Program received signal SIGILL,.*\r\n$gdb_prompt $" {
56 unsupported "no vector support."
59 -re "\[0-9\]+.*\r\n$gdb_prompt $" {
60 pass "vector support available"
63 fail "no vector support (unknown error)"
68 # Has the PC advanced by the expected amount? The kernel may do
69 # something special for the first vector insn in the process.
72 gdb_test_multiple "x/i \$pc" "get PC after vector insn" {
73 -re "(0x\\S+)\\s+.*$gdb_prompt $" {
74 set after_pc $expect_out(1,string)
78 if [expr $before_pc + 6 != $after_pc] {
79 fail "stepping first vector insn"
82 # Lift the core file limit, if possible, and change into the temporary
85 if { $coredir != "" } {
86 gdb_test {print (int) setrlimit (4, &(unsigned long [2]){~0UL, ~0UL})} \
88 gdb_test "print (int) chdir (\"${coredir}\")" " = 0" "chdir"
91 # Initialize all vector registers with GDB "set" commands, using
92 # distinct values. Handle left and right halves separately, in
93 # pseudo-random order.
100 set a [expr ($a_high << 32) | $a_low]
101 set b [expr ($b_high << 32) | $b_low]
103 for {set j 0} {$j < 32} {incr j 1} {
104 set i [expr 17 * $j % 32]
106 "set \$v$i.v2_int64\[0\] = [expr $a * ($i + 1)]" \
108 set i [expr 19 * (31 - $j) % 32]
110 "set \$v$i.v2_int64\[1\] = [expr $b * (32 - $i)]" \
114 # Verify a vector register's union members.
116 gdb_test "info register v0 v31" \
117 "v4_float .* v2_double .* v16_int8 .* v8_int16 .* v4_int32 .* v2_int64 .* uint128\
118 .*v4_float .* v2_double .* v16_int8 .* v8_int16 .* v4_int32 .* v2_int64 .* uint128 .*"
120 # Let the inferior store all vector registers in a buffer, then dump
121 # the buffer and check it.
123 gdb_continue_to_breakpoint "store vrs"
124 set vregs [capture_command_output "x/64xg &save_area" ""]
127 foreach {- left right} [regexp -all -inline -line {^.*:\s+(\w+)\s+(\w+)} $vregs] {
128 if [expr $left != $a * ($i + 1) || $right != $b * (32 - $i)] {
129 fail "verify \$v$i after set"
132 # Check that the FP register was updated accordingly.
133 gdb_test "info register f$i" "raw ${left}.*"
139 fail "dump save area (bad output)"
142 # Let the inferior change all VRs according to a simple algorithm,
143 # then print all VRs and compare their values with our result of the
146 gdb_continue_to_breakpoint "change vrs"
147 set vregs [capture_command_output "info registers vector" ""]
149 # Format a 128-bit value, given individual 4-byte values, as hex.
150 # Suppress leading zeros.
151 proc hex128 {a_high a_low b_high b_low} {
152 set result [format "%x%08x%08x%08x" $a_high $a_low $b_high $b_low]
153 regsub -- "^0*" $result "" result
154 if { $result eq "" } { set result 0 }
159 foreach {- r i val} [regexp -all -inline -line \
160 {^(\D*)(\d+)\s+.*?uint128 = 0x([0-9a-f]+?)} $vregs] {
162 fail "info registers vector: bad line $j"
163 } elseif { $val ne [hex128 \
164 [expr $a_high * ($i + 1) * $a_high ] \
165 [expr $a_low * ($i + 1) * $a_low ] \
166 [expr $b_high * (32 - $i) * $b_high * 32] \
167 [expr $b_low * (32 - $i) * $b_low * 32] ] } {
174 fail "info registers vector"
177 if { $coredir == "" } {
183 gdb_test "signal SIGABRT" "Program terminated with signal SIGABRT, .*"
186 # Find the core file and rename it (avoid accumulating core files).
188 set cores [glob -nocomplain -directory $coredir *core*]
189 if {[llength $cores] != 1} {
190 untested "core file not found"
191 remote_exec build "rm -rf $coredir"
194 set destcore [standard_output_file ${testfile}.core]
195 remote_exec build "mv [file join $coredir [lindex $cores 0]] $destcore"
196 remote_exec build "rm -rf $coredir"
198 # Restart gdb and load the core file. Compare the VRs.
200 clean_restart ${testfile}
202 with_test_prefix "core" {
203 set core_loaded [gdb_core_cmd $destcore "load"]
204 if { $core_loaded != -1 } {
205 set vregs_from_core [capture_command_output "info registers vector" ""]
206 if { $vregs_from_core eq $vregs } {
207 pass "compare vector registers"
209 fail "vector registers mismatch"