projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d506c26 | 1 | # Copyright 2023-2024 Free Software Foundation, Inc. |
| cf141dd8 AB |
2 | |
| 3 | # This program is free software; you can redistribute it and/or modify | |
| 4 | # it under the terms of the GNU General Public License as published by | |
| 5 | # the Free Software Foundation; either version 3 of the License, or | |
| 6 | # (at your option) any later version. | |
| 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 | # Test amd64 displaced stepping over a call instruction that calls to | |
| 17 | # itself. This is pretty unlikely to be seen in the wild, but does | |
| 18 | # test a corner case of our displaced step handling. | |
| 19 | ||
| 20 | require is_x86_64_m64_target | |
| 21 | ||
| 22 | set newline "\[\r\n\]*" | |
| 23 | ||
| 24 | set opts {debug nopie} | |
| 25 | standard_testfile .S -alarm.c | |
| 26 | ||
| 27 | if { [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" $opts] } { | |
| 28 | return -1 | |
| 29 | } | |
| 30 | ||
| 31 | gdb_test "set displaced-stepping on" "" | |
| 32 | gdb_test "show displaced-stepping" ".* displaced stepping .* is on.*" | |
| 33 | ||
| 34 | if {![runto_main]} { | |
| 35 | return 0 | |
| 36 | } | |
| 37 | ||
| 38 | # Proceed to the test function. | |
| 39 | gdb_breakpoint "test_call" | |
| 40 | gdb_continue_to_breakpoint "test_call" | |
| 41 | ||
| 42 | # Get the current stack pointer value. | |
| 43 | set sp [get_hexadecimal_valueof "\$sp" "*UNKNOWN*"] | |
| 44 | ||
| 45 | # Get the address of the next instruction. | |
| 46 | set next_insn_addr "" | |
| 47 | gdb_test_multiple "x/2i \$pc" "get address of next insn" { | |
| 48 | -re "\r\n=> $hex \[^\r\n\]+\r\n" { | |
| 49 | exp_continue | |
| 50 | } | |
| 51 | -re "^ ($hex) \[^\r\n\]+\r\n" { | |
| 52 | set next_insn_addr $expect_out(1,string) | |
| 53 | exp_continue | |
| 54 | } | |
| 55 | -re "^$::gdb_prompt $" { | |
| 56 | gdb_assert {![string equal $next_insn_addr ""]} \ | |
| 57 | $gdb_test_name | |
| 58 | } | |
| 59 | } | |
| 60 | ||
| 61 | # Clear the slot on the stack and confirm it was set to zero. | |
| 62 | set sp [expr $sp - 0x8] | |
| 9340f361 AB |
63 | gdb_test_no_output "set {unsigned long long} $sp = 0" \ |
| 64 | "clear stack slot" | |
| cf141dd8 AB |
65 | set zero_val 0x[format %016x 0] |
| 66 | gdb_test "x/1gx 0x[format %x $sp]" "$hex:\\s+${zero_val}" \ | |
| 67 | "check return address slot was set to zero" | |
| 68 | ||
| 69 | # Single step. | |
| 70 | gdb_test "stepi" \ | |
| 71 | "Breakpoint $decimal, test_call \\(\\) at .*" | |
| 72 | ||
| 73 | # Check stack pointer was updated to the expected value. | |
| 74 | set new_sp [get_hexadecimal_valueof "\$sp" "*UNKNOWN*" \ | |
| 75 | "get stack pointer after step"] | |
| 76 | gdb_assert {[expr $sp == $new_sp]} \ | |
| 77 | "check stack pointer was updated as expected" | |
| 78 | ||
| 79 | # Check the contents of the stack were updated to the expected value. | |
| 80 | set next_insn_addr 0x[format %016X $next_insn_addr] | |
| 81 | gdb_test "x/1gx 0x[format %x $sp]" "$hex:\\s+$next_insn_addr" \ | |
| 82 | "check return address was updated correctly" |