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# Copyright 2020 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 <http://www.gnu.org/licenses/>.
# Various tests to check which register names are available after
# loading a new target description file, and which registers show up
# in the output of the 'info registers' command.
if {![istarget "riscv*-*-*"]} {
verbose "Skipping ${gdb_test_file_name}."
return
}
standard_testfile
if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
{debug quiet}] } {
unsupported "failed to compile"
return -1
}
if { ![runto_main] } {
untested "failed to runto main"
return -1
}
# First, figure out if we are 32-bit or 64-bit.
set xlen [get_valueof "/d" "sizeof (\$a0)" 0]
set flen [get_valueof "/d" "sizeof (\$fa0)" 0]
gdb_assert { $xlen != 0 && $flen != 0 } "read xlen and flen"
# We only handle 32-bit or 64-bit x-registers.
if { $xlen != 4 && $xlen != 8 } {
unsupported "unknown x-register size"
return -1
}
# If FLEN is 1 then the target doesn't have floating point support
# (the register $fa0 was not recognised). Otherwise, we can only
# proceed if FLEN equals XLEN, otherwise we'd need more test XML
# files.
if { $flen != 1 && $flen != $xlen } {
unsupport "unknown xlen/flen combination"
return -1
}
if { $xlen == 4 } {
set xml_tdesc "riscv-tdesc-regs-32.xml"
} else {
set xml_tdesc "riscv-tdesc-regs-64.xml"
}
set xml_tdesc "${srcdir}/${subdir}/${xml_tdesc}"
# Maybe copy the target over if we're remote testing.
if {[is_remote host]} {
set remote_file [remote_download host $xml_tdesc]
} else {
set remote_file $xml_tdesc
}
gdb_test_no_output "set tdesc filename $remote_file" \
"load the new target description"
# Check that an alias for an unknown CSR will give a suitable error.
gdb_test "info registers \$csr0" "Invalid register `csr0'"
# Return the number of times REGISTER should appear in GROUP, this
# will either be 0 or 1.
proc get_expected_result { register group } {
# Everything should appear once in the 'all' group.
if { $group == "all" || $group == "x_all" } {
return 1
}
if { $group == "save" || $group == "restore" } {
# Everything is in the save/restore groups except these two.
if { $register == "unknown_csr" || $register == "dscratch" } {
return 0
}
return 1
}
if { $group == "system" || $group == "csr" } {
# All the registers we check should be in these groups.
return 1
}
return 0
}
foreach rgroup {x_all all save restore general system csr} {
# Now use 'info registers all' to see how many times the floating
# point status registers show up in the output.
array set reg_counts {}
if {$rgroup == "x_all"} {
set test "info all-registers"
} else {
set test "info registers $rgroup"
}
gdb_test_multiple $test $test {
-re ".*info registers all\r\n" {
verbose -log "Skip to first register"
exp_continue
}
-re "^(\[^ \t\]+)\[ \t\]+\[^\r\n\]+\r\n" {
set reg $expect_out(1,string)
incr reg_counts($reg)
exp_continue
}
-re "^$gdb_prompt $" {
# Done.
}
}
foreach reg {fflags frm fcsr unknown_csr dscratch} {
if { [info exists reg_counts($reg) ] } {
set count $reg_counts($reg)
} else {
set count 0
}
set expected_count [ get_expected_result $reg $rgroup ]
gdb_assert {$count == $expected_count} \
"register $reg seen in reggroup $rgroup $expected_count times"
}
array unset reg_counts
}
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