projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d506c26 | 1 | # Copyright 2018-2024 Free Software Foundation, Inc. |
| f5d420bb SM |
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 | # This test is in the same vein as amd64-pseudo-unwind, making sure we can | |
| 17 | # read write pseudo registers in outer frames. However, it tests a special | |
| 18 | # case where the debug info includes unwind information for a pseudo register | |
| 19 | # but not the underlying raw register. This can happen for the pseudo register | |
| 20 | # s16, which is the bottom half of the raw register d8. | |
| 21 | # | |
| 22 | # See "DWARF for the ARM architecture": | |
| 23 | # https://github.com/ARM-software/abi-aa/releases/download/2023Q3/aadwarf32.pdf | |
| 24 | ||
| 25 | if { ![istarget arm*-*-* ] } { | |
| 26 | verbose "Skipping arm pseudo register unwind." | |
| 27 | return | |
| 28 | } | |
| 29 | ||
| 30 | standard_testfile arm-pseudo-unwind-legacy.c arm-pseudo-unwind-legacy-asm.S | |
| 31 | ||
| 32 | if { [prepare_for_testing "failed to prepare" ${testfile} \ | |
| 33 | "${srcfile} ${srcfile2}" {debug additional_flags=-marm}] } { | |
| 34 | return -1 | |
| 35 | } | |
| 36 | ||
| 37 | clean_restart ${binfile} | |
| 38 | ||
| 39 | if ![runto_main] then { | |
| 40 | fail "could not run to main" | |
| 41 | } | |
| 42 | ||
| 43 | gdb_breakpoint break_here_asm temporary | |
| 44 | gdb_continue_to_breakpoint "continue to callee" | |
| 45 | ||
| 46 | # Verify the value of s16 in the inner frame (callee). | |
| 47 | with_test_prefix "callee, before change" { | |
| 48 | gdb_test "p/x \$s16" " = 0x20212223" | |
| 49 | } | |
| 50 | ||
| 51 | # Verify that we can change the value of s16 in the inner frame (callee). | |
| 52 | gdb_test_no_output "set \$s16 = 1.0" | |
| 53 | ||
| 54 | # Verify the value of s16 in the inner frame (callee) after the change. | |
| 55 | with_test_prefix "callee, after change" { | |
| 56 | gdb_test "p/x \$s16" " = 0x3f800000" | |
| 57 | } | |
| 58 | ||
| 59 | # Go up one frame, and do the same. | |
| 60 | gdb_test "up" | |
| 61 | ||
| 62 | # Verify the value of s16 in the outer frame (caller). | |
| 63 | with_test_prefix "caller, before change" { | |
| 64 | gdb_test "p/x \$s16" " = 0x10111213" | |
| 65 | } | |
| 66 | ||
| 67 | # Verify that we can change the value of s16 in the outer frame (caller). | |
| 68 | gdb_test_no_output "set \$s16 = 2.0" | |
| 69 | ||
| 70 | # Verify the value of s16 in the outer frame (caller) after the change. | |
| 71 | with_test_prefix "caller, after change" { | |
| 72 | gdb_test "p/x \$s16" " = 0x40000000" | |
| 73 | } | |
| 74 | ||
| 75 | # Go back to frame 0 (callee), check that the change to the outer frame didn't | |
| 76 | # mess up anything there. | |
| 77 | gdb_test "down" | |
| 78 | with_test_prefix "callee, after change in caller" { | |
| 79 | gdb_test "p/x \$s16" " = 0x3f800000" | |
| 80 | } | |
| 81 | ||
| 82 | # Verify that the value of the saved s16 we changed is correctly seen by the | |
| 83 | # inferior. | |
| 84 | gdb_breakpoint break_here_c temporary | |
| 85 | gdb_continue_to_breakpoint "continue to break_here_c" | |
| 86 | gdb_test "p/x value" " = 0x40000000" |