gdb/testsuite/gdb.arch/riscv-default-tdesc.exp

   1 # Copyright 2021 Free Software Foundation, Inc.
   2 #
   3 # This program is free software; you can redistribute it and/or modify
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   5 # the Free Software Foundation; either version 3 of the License, or
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   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 # Check the size of the $pc register as the user changes the selected
  17 # architecture.  As no executable is provided then the size of the $pc
  18 # register is defined by the default target description selected by
  19 # GDB.
  20 #
  21 # This test ensures that GDB is selecting an RV32 default if the user
  22 # has forced the current architecture to be riscv:rv32.
  23 #
  24 # In all other cases the default will be RV64.
  25
  26 if {![istarget "riscv*-*-*"]} {
  27     verbose "Skipping ${gdb_test_file_name}."
  28     return
  29 }
  30
  31 # Start GDB with no executable.
  32 gdb_start
  33
  34 # The tests are defined by a list of architecture names to switch too
  35 # and the expected size of $pc.  The first list entry is special and
  36 # has an empty architecture string, this checks GDB's default value on
  37 # startup.
  38 foreach data {{"" 8} {"riscv:rv32" 4} {"riscv:rv64" 8} {"riscv" 8} \
  39                   {"auto" 8}} {
  40     set arch [lindex $data 0]
  41     set size [lindex $data 1]
  42
  43     # Switch architecture.
  44     if { $arch != "" && $arch != "auto" } {
  45         gdb_test "set architecture $arch" \
  46             "The target architecture is set to \"$arch\"\\."
  47     } elseif { $arch == "auto" } {
  48         gdb_test "set architecture $arch" \
  49             "The target architecture is set to \"auto\" \\(currently \"riscv\"\\)\\."
  50     } else {
  51         set arch "default architecture"
  52     }
  53
  54     # Check the size of $pc.
  55     with_test_prefix "$arch" {
  56         gdb_test "p sizeof (\$pc)" " = $size" \
  57             "size of \$pc register is $size"
  58     }
  59 }