diff options
Diffstat (limited to 'gdb/testsuite')
| -rw-r--r-- | gdb/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/riscv-reg-aliases.c | 22 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/riscv-reg-aliases.exp | 130 |
3 files changed, 157 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index a917a6d..447578e 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-10-23 Andrew Burgess <andrew.burgess@embecosm.com> + + * gdb.arch/riscv-reg-aliases.c: New file. + * gdb.arch/riscv-reg-aliases.exp: New file. + 2018-10-19 Alan Hayward <alan.hayward@arm.com> * gdb.python/py-cmd.exp: Check for gdb_prompt. diff --git a/gdb/testsuite/gdb.arch/riscv-reg-aliases.c b/gdb/testsuite/gdb.arch/riscv-reg-aliases.c new file mode 100644 index 0000000..f6341e3 --- /dev/null +++ b/gdb/testsuite/gdb.arch/riscv-reg-aliases.c @@ -0,0 +1,22 @@ +/* This file is part of GDB, the GNU debugger. + + Copyright 2018 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/>. */ + +int +main () +{ + return 0; +} diff --git a/gdb/testsuite/gdb.arch/riscv-reg-aliases.exp b/gdb/testsuite/gdb.arch/riscv-reg-aliases.exp new file mode 100644 index 0000000..0b54723 --- /dev/null +++ b/gdb/testsuite/gdb.arch/riscv-reg-aliases.exp @@ -0,0 +1,130 @@ +# Copyright 2018 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/>. + +if {![istarget "riscv*-*-*"]} { + verbose "Skipping ${gdb_test_file_name}." + return +} + +standard_testfile + +if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} { + return -1 +} + +if ![runto_main] then { + fail "can't run to main" + return 0 +} + +# A list, each entry is itself a list, the first item being the +# primary name of a register (the name GDB uses by default), and the +# second entry being a list of register aliases. +set register_names \ +{ { ra {x1} } { sp {x2} } { gp {x3} } { tp {x4} } { t0 {x5} } \ + { t1 {x6} } { t2 {x7} } { fp {x8 s0} } { s1 {x9} } { a0 {x10} } \ + { a1 {x11} } { a2 {x12} } { a3 {x13} } { a4 {x14} } { a5 {x15} } \ + { a6 {x16} } { a7 {x17} } { s2 {x18} } { s3 {x19} } { s4 {x20} } \ + { s5 {x21} } { s6 {x22} } { s7 {x23} } { s8 {x24} } { s9 {x25} } \ + { s10 {x26} } { s11 {x27} } { t3 {x28} } { t4 {x29} } { t5 {x30} } \ + { t6 {x31} } { ft0 {f0} } { ft1 {f1} } { ft2 {f2} } { ft3 {f3} } \ + { ft4 {f4} } { ft5 {f5} } { ft6 {f6} } { ft7 {f7} } { fs0 {f8} } \ + { fs1 {f9} } { fa0 {f10} } { fa1 {f11} } { fa2 {f12} } { fa3 {f13} } \ + { fa4 {f14} } { fa5 {f15} } { fa6 {f16} } { fa7 {f17} } { fs2 {f18} } \ + { fs3 {f19} } { fs4 {f20} } { fs5 {f21} } { fs6 {f22} } { fs7 {f23} } \ + { fs8 {f24} } { fs9 {f25} } { fs10 {f26} } { fs11 {f27} } { ft8 {f28} } \ + { ft9 {f29} } { ft10 {f30} } { ft11 {f31} } } + +# Check that the zero register (and its x0 alias) both contain the +# value 0. + +proc check_zero_register_value {testname} { + gdb_test "p/d \$zero" " = 0" "check \$zero: ${testname}" + gdb_test "p/d \$x0" " = 0" "check \$x0: ${testname}" +} + +# First, some testing of the zero register. This register should +# always read as zero, and should swallow any attempt to write a +# non-zero value to the register. + +check_zero_register_value "before any writes" + +gdb_test_no_output "set \$zero = 123" \ + "write to the \$zero register" + +check_zero_register_value "after write to \$zero" + +gdb_test_no_output "set \$x0 = 123" \ + "write to the \$x0 register" + +check_zero_register_value "after write to \$x0" + +# Set all of the general registers to zero. Confirm that the value of +# zero can be read back from the primary name, and from all of the +# alias names. + +foreach reg_desc ${register_names} { + set primary_name [lindex ${reg_desc} 0] + set alias_names [lindex ${reg_desc} 1] + + gdb_test_no_output "set \$${primary_name} = 0" \ + "set register ${primary_name} to an initial value of zero" + gdb_test "p/d \$${primary_name}" " = 0" \ + "check the initial value of ${primary_name} is now zero" + + foreach reg_alias ${alias_names} { + gdb_test "p/d \$${reg_alias}" " = 0" \ + "check the initial value of ${reg_alias} is now zero" + } +} + +# Set each register in turn to a new value, and confirm that the new +# value can be read back from the primary name, and from all of the +# alias names. + +set reg_value 100 +foreach reg_desc ${register_names} { + set primary_name [lindex ${reg_desc} 0] + set alias_names [lindex ${reg_desc} 1] + + # Set value through the primary register name, and check that all + # the aliases see the same value. + set reg_value [incr reg_value] + gdb_test_no_output "set \$${primary_name} = $reg_value" \ + "write non-zero value to ${primary_name}" + gdb_test "p/d \$${primary_name}" " = $reg_value" \ + "read ${primary_name} after non-zero write to ${primary_name}" + foreach reg_alias ${alias_names} { + gdb_test "p/d \$${reg_alias}" " = $reg_value" \ + "read ${reg_alias} after non-zero write to ${primary_name}" + } + + # For each alias, set a new value, and check that the primary + # register name, and all the other aliases, see the new value. + foreach reg_alias ${alias_names} { + set reg_value [incr reg_value] + + gdb_test_no_output "set \$${reg_alias} = $reg_value" \ + "write non-zero value to ${reg_alias}" + + gdb_test "p/d \$${primary_name}" " = $reg_value" \ + "read ${primary_name} after non-zero write to ${reg_alias}" + + foreach other_reg_alias ${alias_names} { + gdb_test "p/d \$${other_reg_alias}" " = $reg_value" \ + "read ${other_reg_alias} after non-zero write to ${reg_alias}" + } + } +} |