1 # Copyright 2020-2023 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 # Various tests to check which register names are available after
17 # loading a new target description file, and which registers show up
18 # in the output of the 'info registers' command.
20 if {![istarget "riscv*-*-*"]} {
21 verbose "Skipping ${gdb_test_file_name}."
27 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
29 unsupported "failed to compile"
33 if { ![runto_main] } {
37 # First, figure out if we are 32-bit or 64-bit.
38 set xlen [get_valueof "/d" "sizeof (\$a0)" 0]
39 set flen [get_valueof "/d" "sizeof (\$fa0)" 0]
41 gdb_assert { $xlen != 0 && $flen != 0 } "read xlen and flen"
43 # We only handle 32-bit or 64-bit x-registers.
44 if { $xlen != 4 && $xlen != 8 } {
45 unsupported "unknown x-register size"
49 # If FLEN is 1 then the target doesn't have floating point support
50 # (the register $fa0 was not recognised). Otherwise, we can only
51 # proceed if FLEN equals XLEN, otherwise we'd need more test XML
53 if { $flen != 1 && $flen != $xlen } {
54 unsupport "unknown xlen/flen combination"
59 set xml_tdesc "riscv-tdesc-regs-32.xml"
61 set xml_tdesc "riscv-tdesc-regs-64.xml"
63 set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}"
65 # Maybe copy the target over if we're remote testing.
66 if {[is_remote host]} {
67 set remote_file [remote_download host $xml_tdesc]
69 set remote_file $xml_tdesc
72 gdb_test_no_output "set tdesc filename $remote_file" \
73 "load the new target description"
75 # Check that an alias for an unknown CSR will give a suitable error.
76 gdb_test "info registers \$csr0" "Invalid register `csr0'"
78 # Return the number of times REGISTER should appear in GROUP, this
79 # will either be 0 or 1.
80 proc get_expected_result { register group } {
82 # Everything should appear once in the 'all' group.
83 if { $group == "all" || $group == "x_all" } {
87 if { $group == "save" || $group == "restore" } {
88 # Everything is in the save/restore groups except these two.
89 if { $register == "unknown_csr" || $register == "dscratch" } {
95 if { $group == "system" || $group == "csr" } {
96 # All the registers we check should be in these groups.
103 foreach rgroup {x_all all save restore general system csr} {
104 # Now use 'info registers all' to see how many times the floating
105 # point status registers show up in the output.
106 array set reg_counts {}
107 if {$rgroup == "x_all"} {
108 set test "info all-registers"
110 set test "info registers $rgroup"
112 gdb_test_multiple $test $test {
113 -re ".*info registers all\r\n" {
114 verbose -log "Skip to first register"
117 -re "^(\[^ \t\]+)\[ \t\]+\[^\r\n\]+\r\n" {
118 set reg $expect_out(1,string)
119 incr reg_counts($reg)
122 -re "^$gdb_prompt $" {
127 foreach reg {fflags frm fcsr unknown_csr dscratch} {
128 if { [info exists reg_counts($reg) ] } {
129 set count $reg_counts($reg)
134 set expected_count [ get_expected_result $reg $rgroup ]
135 gdb_assert {$count == $expected_count} \
136 "register $reg seen in reggroup $rgroup $expected_count times"
138 array unset reg_counts
141 # Next load a target description that contains fcsr, but not fflags or
142 # frm. Then check that GDB provides an fflags and frm registers using
143 # the pseudo-register mechanism.
145 set xml_tdesc "riscv-tdesc-fcsr-32.xml"
147 set xml_tdesc "riscv-tdesc-fcsr-64.xml"
149 set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}"
151 # Maybe copy the target over if we're remote testing.
152 if {[is_remote host]} {
153 set remote_file [remote_download host $xml_tdesc]
155 set remote_file $xml_tdesc
158 gdb_test_no_output "set tdesc filename $remote_file" \
159 "load the target description that lacks fflags and frm"
161 foreach reg {fflags frm} {
162 gdb_test_multiple "info registers $reg" "" {
163 -re "^info registers $reg\r\n" {
167 -wrap -re "^Invalid register `$reg`" {
171 -wrap -re "^$reg\\s+\[^\r\n\]+" {