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1d506c26 | 1 | # Copyright 2020-2024 Free Software Foundation, Inc. |
767a879e AB |
2 | # |
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. | |
7 | # | |
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. | |
12 | # | |
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/>. | |
15 | ||
16 | # Various tests to check which register names are available after | |
ed69cbc8 AB |
17 | # loading a new target description file, and which registers show up |
18 | # in the output of the 'info registers' command. | |
767a879e | 19 | |
73c06197 | 20 | require {istarget "riscv*-*-*"} |
767a879e AB |
21 | |
22 | standard_testfile | |
23 | ||
24 | if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \ | |
25 | {debug quiet}] } { | |
26 | unsupported "failed to compile" | |
27 | return -1 | |
28 | } | |
29 | ||
30 | if { ![runto_main] } { | |
767a879e AB |
31 | return -1 |
32 | } | |
33 | ||
34 | # First, figure out if we are 32-bit or 64-bit. | |
35 | set xlen [get_valueof "/d" "sizeof (\$a0)" 0] | |
36 | set flen [get_valueof "/d" "sizeof (\$fa0)" 0] | |
37 | ||
38 | gdb_assert { $xlen != 0 && $flen != 0 } "read xlen and flen" | |
39 | ||
40 | # We only handle 32-bit or 64-bit x-registers. | |
41 | if { $xlen != 4 && $xlen != 8 } { | |
42 | unsupported "unknown x-register size" | |
43 | return -1 | |
44 | } | |
45 | ||
46 | # If FLEN is 1 then the target doesn't have floating point support | |
47 | # (the register $fa0 was not recognised). Otherwise, we can only | |
48 | # proceed if FLEN equals XLEN, otherwise we'd need more test XML | |
49 | # files. | |
50 | if { $flen != 1 && $flen != $xlen } { | |
51 | unsupport "unknown xlen/flen combination" | |
52 | return -1 | |
53 | } | |
54 | ||
55 | if { $xlen == 4 } { | |
56 | set xml_tdesc "riscv-tdesc-regs-32.xml" | |
57 | } else { | |
58 | set xml_tdesc "riscv-tdesc-regs-64.xml" | |
59 | } | |
60 | set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}" | |
61 | ||
62 | # Maybe copy the target over if we're remote testing. | |
63 | if {[is_remote host]} { | |
64 | set remote_file [remote_download host $xml_tdesc] | |
65 | } else { | |
66 | set remote_file $xml_tdesc | |
67 | } | |
68 | ||
69 | gdb_test_no_output "set tdesc filename $remote_file" \ | |
70 | "load the new target description" | |
71 | ||
72 | # Check that an alias for an unknown CSR will give a suitable error. | |
73 | gdb_test "info registers \$csr0" "Invalid register `csr0'" | |
74 | ||
e4502042 AB |
75 | # Return the number of times REGISTER should appear in GROUP, this |
76 | # will either be 0 or 1. | |
77 | proc get_expected_result { register group } { | |
78 | ||
79 | # Everything should appear once in the 'all' group. | |
80 | if { $group == "all" || $group == "x_all" } { | |
81 | return 1 | |
82 | } | |
83 | ||
84 | if { $group == "save" || $group == "restore" } { | |
85 | # Everything is in the save/restore groups except these two. | |
86 | if { $register == "unknown_csr" || $register == "dscratch" } { | |
87 | return 0 | |
88 | } | |
89 | return 1 | |
90 | } | |
91 | ||
92 | if { $group == "system" || $group == "csr" } { | |
93 | # All the registers we check should be in these groups. | |
94 | return 1 | |
95 | } | |
96 | ||
97 | return 0 | |
98 | } | |
99 | ||
100 | foreach rgroup {x_all all save restore general system csr} { | |
ed69cbc8 AB |
101 | # Now use 'info registers all' to see how many times the floating |
102 | # point status registers show up in the output. | |
103 | array set reg_counts {} | |
6d74da72 AB |
104 | if {$rgroup == "x_all"} { |
105 | set test "info all-registers" | |
106 | } else { | |
107 | set test "info registers $rgroup" | |
108 | } | |
ed69cbc8 AB |
109 | gdb_test_multiple $test $test { |
110 | -re ".*info registers all\r\n" { | |
111 | verbose -log "Skip to first register" | |
112 | exp_continue | |
113 | } | |
114 | -re "^(\[^ \t\]+)\[ \t\]+\[^\r\n\]+\r\n" { | |
115 | set reg $expect_out(1,string) | |
116 | incr reg_counts($reg) | |
117 | exp_continue | |
118 | } | |
119 | -re "^$gdb_prompt $" { | |
120 | # Done. | |
121 | } | |
122 | } | |
123 | ||
2e52d038 | 124 | foreach reg {fflags frm fcsr unknown_csr dscratch} { |
ed69cbc8 AB |
125 | if { [info exists reg_counts($reg) ] } { |
126 | set count $reg_counts($reg) | |
127 | } else { | |
128 | set count 0 | |
129 | } | |
e4502042 AB |
130 | |
131 | set expected_count [ get_expected_result $reg $rgroup ] | |
132 | gdb_assert {$count == $expected_count} \ | |
133 | "register $reg seen in reggroup $rgroup $expected_count times" | |
ed69cbc8 AB |
134 | } |
135 | array unset reg_counts | |
136 | } | |
4749b84b AB |
137 | |
138 | # Next load a target description that contains fcsr, but not fflags or | |
139 | # frm. Then check that GDB provides an fflags and frm registers using | |
140 | # the pseudo-register mechanism. | |
141 | if { $xlen == 4 } { | |
142 | set xml_tdesc "riscv-tdesc-fcsr-32.xml" | |
143 | } else { | |
144 | set xml_tdesc "riscv-tdesc-fcsr-64.xml" | |
145 | } | |
146 | set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}" | |
147 | ||
148 | # Maybe copy the target over if we're remote testing. | |
149 | if {[is_remote host]} { | |
150 | set remote_file [remote_download host $xml_tdesc] | |
151 | } else { | |
152 | set remote_file $xml_tdesc | |
153 | } | |
154 | ||
155 | gdb_test_no_output "set tdesc filename $remote_file" \ | |
156 | "load the target description that lacks fflags and frm" | |
157 | ||
158 | foreach reg {fflags frm} { | |
159 | gdb_test_multiple "info registers $reg" "" { | |
160 | -re "^info registers $reg\r\n" { | |
161 | exp_continue | |
162 | } | |
163 | ||
164 | -wrap -re "^Invalid register `$reg`" { | |
165 | fail $gdb_test_name | |
166 | } | |
167 | ||
168 | -wrap -re "^$reg\\s+\[^\r\n\]+" { | |
169 | pass $gdb_test_name | |
170 | } | |
171 | } | |
172 | } |