1# Copyright 2020 Free Software Foundation, Inc. 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 17# loading a new target description file, and which registers show up 18# in the output of the 'info registers' command. 19 20if {![istarget "riscv*-*-*"]} { 21 verbose "Skipping ${gdb_test_file_name}." 22 return 23} 24 25standard_testfile 26 27if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \ 28 {debug quiet}] } { 29 unsupported "failed to compile" 30 return -1 31} 32 33if { ![runto_main] } { 34 untested "failed to runto main" 35 return -1 36} 37 38# First, figure out if we are 32-bit or 64-bit. 39set xlen [get_valueof "/d" "sizeof (\$a0)" 0] 40set flen [get_valueof "/d" "sizeof (\$fa0)" 0] 41 42gdb_assert { $xlen != 0 && $flen != 0 } "read xlen and flen" 43 44# We only handle 32-bit or 64-bit x-registers. 45if { $xlen != 4 && $xlen != 8 } { 46 unsupported "unknown x-register size" 47 return -1 48} 49 50# If FLEN is 1 then the target doesn't have floating point support 51# (the register $fa0 was not recognised). Otherwise, we can only 52# proceed if FLEN equals XLEN, otherwise we'd need more test XML 53# files. 54if { $flen != 1 && $flen != $xlen } { 55 unsupport "unknown xlen/flen combination" 56 return -1 57} 58 59if { $xlen == 4 } { 60 set xml_tdesc "riscv-tdesc-regs-32.xml" 61} else { 62 set xml_tdesc "riscv-tdesc-regs-64.xml" 63} 64set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}" 65 66# Maybe copy the target over if we're remote testing. 67if {[is_remote host]} { 68 set remote_file [remote_download host $xml_tdesc] 69} else { 70 set remote_file $xml_tdesc 71} 72 73gdb_test_no_output "set tdesc filename $remote_file" \ 74 "load the new target description" 75 76# Check that an alias for an unknown CSR will give a suitable error. 77gdb_test "info registers \$csr0" "Invalid register `csr0'" 78 79# Check we can access the dscratch register using either of its names. 80gdb_test "info registers \$dscratch0" "dscratch0\[ \t\]+.*" 81gdb_test "info registers \$dscratch" "dscratch\[ \t\]+.*" 82 83foreach rgroup {x_all all save restore} { 84 # Now use 'info registers all' to see how many times the floating 85 # point status registers show up in the output. 86 array set reg_counts {} 87 if {$rgroup == "x_all"} { 88 set test "info all-registers" 89 } else { 90 set test "info registers $rgroup" 91 } 92 gdb_test_multiple $test $test { 93 -re ".*info registers all\r\n" { 94 verbose -log "Skip to first register" 95 exp_continue 96 } 97 -re "^(\[^ \t\]+)\[ \t\]+\[^\r\n\]+\r\n" { 98 set reg $expect_out(1,string) 99 incr reg_counts($reg) 100 exp_continue 101 } 102 -re "^$gdb_prompt $" { 103 # Done. 104 } 105 } 106 107 foreach reg {fflags frm fcsr unknown_csr dscratch} { 108 if { [info exists reg_counts($reg) ] } { 109 set count $reg_counts($reg) 110 } else { 111 set count 0 112 } 113 if {($reg == "unknown_csr" || $reg == "dscratch") \ 114 && $rgroup != "all" && $rgroup != "x_all"} { 115 gdb_assert {$count == 0} \ 116 "register $reg not seen in reggroup $rgroup" 117 } else { 118 gdb_assert {$count == 1} \ 119 "register $reg seen once in reggroup $rgroup" 120 } 121 } 122 array unset reg_counts 123} 124