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Diffstat (limited to 'gdb/testsuite/gdb.reverse/aarch64-mops.exp')
| -rw-r--r-- | gdb/testsuite/gdb.reverse/aarch64-mops.exp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.reverse/aarch64-mops.exp b/gdb/testsuite/gdb.reverse/aarch64-mops.exp new file mode 100644 index 0000000..05a991d --- /dev/null +++ b/gdb/testsuite/gdb.reverse/aarch64-mops.exp @@ -0,0 +1,186 @@ +# Copyright 2024 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/>. + +# Test instruction record for AArch64 FEAT_MOPS instructions. +# Based on gdb.reverse/ppc_record_test_isa_3_1.exp +# +# The basic flow of the record tests are: +# 1) Stop before executing the instructions of interest. Record +# the initial value of the registers that the instruction will +# change, i.e. the destination register. +# 2) Execute the instructions. Record the new value of the +# registers that changed. +# 3) Reverse the direction of the execution and execute back to +# just before the instructions of interest. Record the final +# value of the registers of interest. +# 4) Check that the initial and new values of the registers are +# different, i.e. the instruction changed the registers as expected. +# 5) Check that the initial and final values of the registers are +# the same, i.e. GDB record restored the registers to their +# original values. + +require allow_aarch64_mops_tests + +standard_testfile + +if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \ + [list debug additional_flags=-march=armv9.3-a]] } { + return -1 +} + +if ![runto_main] { + return -1 +} + +gdb_test_no_output "record full" + +foreach_with_prefix insn_prefix {"set" "cpy" "cpyf"} { + global decimal hex + + set before_seq [gdb_get_line_number "Before ${insn_prefix}p"] + set after_seq [gdb_get_line_number "After ${insn_prefix}e"] + + gdb_test "break $before_seq" \ + "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \ + "break before instruction sequence" + gdb_continue_to_breakpoint "about to execute instruction sequence" \ + [multi_line ".*/aarch64-mops.c:$decimal" \ + "$decimal\[ \t\]+__asm__ volatile \\(\"${insn_prefix}p \[^\r\n\]+\""] + + # Depending on the compiler, the line number information may put GDB a few + # instructions before the beginning of the asm statement. + arrive_at_instruction "${insn_prefix}p" + # Add a breakpoint that we're sure is at the prologue instruction. + gdb_test "break *\$pc" \ + "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \ + "break at prologue instruction" + + # Record the initial memory and register values. + set dest_initial [get_valueof "/x" "dest" "unable to read initial" \ + "get dest initial value"] + set x19_initial [capture_command_output "info register x19" ""] + set x21_initial [capture_command_output "info register x21" ""] + + # The set instructions use the ZERO variable, but not Q nor SOURCE, + # and the other instructions are the opposite. + if {[string compare $insn_prefix "set"] == 0} { + set x22_initial [capture_command_output "info register x22" ""] + } else { + set x20_initial [capture_command_output "info register x20" ""] + set source_initial [get_valueof "/x" "source" "unable to read initial" \ + "get source initial value"] + } + + gdb_test "break $after_seq" \ + "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \ + "break after instruction sequence" + gdb_continue_to_breakpoint "executed instruction sequence" \ + [multi_line ".*/aarch64-mops.c:$decimal" "$decimal\[ \t\]+p = dest;"] + + # Record the new memory and register values. + set dest_new [get_valueof "/x" "dest" "unable to read new" \ + "get dest new value"] + set x19_new [capture_command_output "info register x19" ""] + set x21_new [capture_command_output "info register x21" ""] + + if {[string compare $insn_prefix "set"] == 0} { + set x22_new [capture_command_output "info register x22" ""] + } else { + set x20_new [capture_command_output "info register x20" ""] + set source_new [get_valueof "/x" "source" "unable to read new" \ + "get source new value"] + } + + # Execute in reverse to before the instruction sequence. + gdb_test_no_output "set exec-direction reverse" + + gdb_continue_to_breakpoint "reversed execution of instruction sequence" \ + [multi_line ".*/aarch64-mops.c:$decimal" \ + "$decimal\[ \t\]+__asm__ volatile \\(\"${insn_prefix}p \[^\r\n\]+\""] + + # Record the final memory and register values. + set dest_final [get_valueof "/x" "dest" "unable to read final" \ + "get dest final value"] + set x19_final [capture_command_output "info register x19" ""] + set x21_final [capture_command_output "info register x21" ""] + + if {[string compare $insn_prefix "set"] == 0} { + set x22_final [capture_command_output "info register x22" ""] + } else { + set x20_final [capture_command_output "info register x20" ""] + set source_final [get_valueof "/x" "source" "unable to read final" \ + "get source final value"] + } + + # Check initial and new values of dest are different. + gdb_assert [string compare $dest_initial $dest_new] \ + "check dest initial value versus dest new value" + + # Check initial and new values of x19 are different. + gdb_assert [string compare $x19_initial $x19_new] \ + "check x19 initial value versus x19 new value" + + # Check initial and new values of x21 are different. + gdb_assert [string compare $x21_initial $x21_new] \ + "check x21 initial value versus x21 new value" + + if {[string compare $insn_prefix "set"] == 0} { + # Check initial and new values of x22 are the same. + # The register with the value to set shouldn't change. + gdb_assert ![string compare $x22_initial $x22_new] \ + "check x22 initial value versus x22 new value" + } else { + # Check initial and new values of x20 are different. + gdb_assert [string compare $x20_initial $x20_new] \ + "check x20 initial value versus x20 new value" + # Check initial and new values of source are the same. + gdb_assert ![string compare $source_initial $source_new] \ + "check source initial value versus source new value" + } + + # Check initial and final values of dest are the same. + gdb_assert ![string compare $dest_initial $dest_final] \ + "check dest initial value versus dest final value" + + # Check initial and final values of x19 are the same. + gdb_assert ![string compare $x19_initial $x19_final] \ + "check x19 initial value versus x19 final value" + + # Check initial and final values of x21 are the same. + gdb_assert ![string compare $x21_initial $x21_final] \ + "check x21 initial value versus x21 final value" + + if {[string compare $insn_prefix "set"] == 0} { + # Check initial and final values of x22 are the same. + gdb_assert ![string compare $x22_initial $x22_final] \ + "check x22 initial value versus x22 final value" + } else { + # Check initial and final values of x20 are the same. + gdb_assert ![string compare $x20_initial $x20_final] \ + "check x20 initial value versus x20 final value" + + # Check initial and final values of source are the same. + gdb_assert ![string compare $source_initial $source_final] \ + "check source initial value versus source final value" + } + + # Restore forward execution and go to end of recording. + gdb_test_no_output "set exec-direction forward" + gdb_test "record goto end" \ + [multi_line \ + "Go forward to insn number $decimal" \ + "#0 main \\(\\) at .*/aarch64-mops.c:$decimal" \ + "$decimal\[ \t\]+p = dest;"] +} |