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5 # the Free Software Foundation; either version 3 of the License, or
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
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16 # Test instruction record for AArch64 FEAT_MOPS instructions.
17 # Based on gdb.reverse/ppc_record_test_isa_3_1.exp
19 # The basic flow of the record tests are:
20 # 1) Stop before executing the instructions of interest. Record
21 # the initial value of the registers that the instruction will
22 # change, i.e. the destination register.
23 # 2) Execute the instructions. Record the new value of the
24 # registers that changed.
25 # 3) Reverse the direction of the execution and execute back to
26 # just before the instructions of interest. Record the final
27 # value of the registers of interest.
28 # 4) Check that the initial and new values of the registers are
29 # different, i.e. the instruction changed the registers as expected.
30 # 5) Check that the initial and final values of the registers are
31 # the same, i.e. GDB record restored the registers to their
34 require allow_aarch64_mops_tests
38 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
39 [list debug additional_flags=-march=armv9.3-a]] } {
47 gdb_test_no_output "record full"
49 foreach_with_prefix insn_prefix {"set" "cpy" "cpyf"} {
52 set before_seq [gdb_get_line_number "Before ${insn_prefix}p"]
53 set after_seq [gdb_get_line_number "After ${insn_prefix}e"]
55 gdb_test "break $before_seq" \
56 "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \
57 "break before instruction sequence"
58 gdb_continue_to_breakpoint "about to execute instruction sequence" \
59 [multi_line ".*/aarch64-mops.c:$decimal" \
60 "$decimal\[ \t\]+__asm__ volatile \\(\"${insn_prefix}p \[^\r\n\]+\""]
62 # Depending on the compiler, the line number information may put GDB a few
63 # instructions before the beginning of the asm statement.
64 arrive_at_instruction "${insn_prefix}p"
65 # Add a breakpoint that we're sure is at the prologue instruction.
66 gdb_test "break *\$pc" \
67 "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \
68 "break at prologue instruction"
70 # Record the initial memory and register values.
71 set dest_initial [get_valueof "/x" "dest" "unable to read initial" \
72 "get dest initial value"]
73 set x19_initial [capture_command_output "info register x19" ""]
74 set x21_initial [capture_command_output "info register x21" ""]
76 # The set instructions use the ZERO variable, but not Q nor SOURCE,
77 # and the other instructions are the opposite.
78 if {[string compare $insn_prefix "set"] == 0} {
79 set x22_initial [capture_command_output "info register x22" ""]
81 set x20_initial [capture_command_output "info register x20" ""]
82 set source_initial [get_valueof "/x" "source" "unable to read initial" \
83 "get source initial value"]
86 gdb_test "break $after_seq" \
87 "Breakpoint $decimal at $hex: file .*/aarch64-mops.c, line $decimal\\." \
88 "break after instruction sequence"
89 gdb_continue_to_breakpoint "executed instruction sequence" \
90 [multi_line ".*/aarch64-mops.c:$decimal" "$decimal\[ \t\]+p = dest;"]
92 # Record the new memory and register values.
93 set dest_new [get_valueof "/x" "dest" "unable to read new" \
95 set x19_new [capture_command_output "info register x19" ""]
96 set x21_new [capture_command_output "info register x21" ""]
98 if {[string compare $insn_prefix "set"] == 0} {
99 set x22_new [capture_command_output "info register x22" ""]
101 set x20_new [capture_command_output "info register x20" ""]
102 set source_new [get_valueof "/x" "source" "unable to read new" \
103 "get source new value"]
106 # Execute in reverse to before the instruction sequence.
107 gdb_test_no_output "set exec-direction reverse"
109 gdb_continue_to_breakpoint "reversed execution of instruction sequence" \
110 [multi_line ".*/aarch64-mops.c:$decimal" \
111 "$decimal\[ \t\]+__asm__ volatile \\(\"${insn_prefix}p \[^\r\n\]+\""]
113 # Record the final memory and register values.
114 set dest_final [get_valueof "/x" "dest" "unable to read final" \
115 "get dest final value"]
116 set x19_final [capture_command_output "info register x19" ""]
117 set x21_final [capture_command_output "info register x21" ""]
119 if {[string compare $insn_prefix "set"] == 0} {
120 set x22_final [capture_command_output "info register x22" ""]
122 set x20_final [capture_command_output "info register x20" ""]
123 set source_final [get_valueof "/x" "source" "unable to read final" \
124 "get source final value"]
127 # Check initial and new values of dest are different.
128 gdb_assert [string compare $dest_initial $dest_new] \
129 "check dest initial value versus dest new value"
131 # Check initial and new values of x19 are different.
132 gdb_assert [string compare $x19_initial $x19_new] \
133 "check x19 initial value versus x19 new value"
135 # Check initial and new values of x21 are different.
136 gdb_assert [string compare $x21_initial $x21_new] \
137 "check x21 initial value versus x21 new value"
139 if {[string compare $insn_prefix "set"] == 0} {
140 # Check initial and new values of x22 are the same.
141 # The register with the value to set shouldn't change.
142 gdb_assert ![string compare $x22_initial $x22_new] \
143 "check x22 initial value versus x22 new value"
145 # Check initial and new values of x20 are different.
146 gdb_assert [string compare $x20_initial $x20_new] \
147 "check x20 initial value versus x20 new value"
148 # Check initial and new values of source are the same.
149 gdb_assert ![string compare $source_initial $source_new] \
150 "check source initial value versus source new value"
153 # Check initial and final values of dest are the same.
154 gdb_assert ![string compare $dest_initial $dest_final] \
155 "check dest initial value versus dest final value"
157 # Check initial and final values of x19 are the same.
158 gdb_assert ![string compare $x19_initial $x19_final] \
159 "check x19 initial value versus x19 final value"
161 # Check initial and final values of x21 are the same.
162 gdb_assert ![string compare $x21_initial $x21_final] \
163 "check x21 initial value versus x21 final value"
165 if {[string compare $insn_prefix "set"] == 0} {
166 # Check initial and final values of x22 are the same.
167 gdb_assert ![string compare $x22_initial $x22_final] \
168 "check x22 initial value versus x22 final value"
170 # Check initial and final values of x20 are the same.
171 gdb_assert ![string compare $x20_initial $x20_final] \
172 "check x20 initial value versus x20 final value"
174 # Check initial and final values of source are the same.
175 gdb_assert ![string compare $source_initial $source_final] \
176 "check source initial value versus source final value"
179 # Restore forward execution and go to end of recording.
180 gdb_test_no_output "set exec-direction forward"
181 gdb_test "record goto end" \
183 "Go forward to insn number $decimal" \
184 "#0 main \\(\\) at .*/aarch64-mops.c:$decimal" \
185 "$decimal\[ \t\]+p = dest;"]