projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 88b9d363 | 1 | # Copyright 2019-2022 Free Software Foundation, Inc. |
| 312617a3 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 | # This tests GDB's ability to handle 6 and 8 byte instructions in the | |
| 17 | # RISC-V prologue scanner. These instruction should be ignored, but | |
| 18 | # should not result in an error that interrupts the debug session. | |
| 19 | # | |
| 20 | # Each of the files riscv-unwind-long-insn-*.s include a function | |
| 21 | # (func) that contains a fake long instruction (6 or 8 bytes) in the | |
| 22 | # prologue. We trick GDB into parsing the fake instruction by tail | |
| 23 | # calling from a different function, 'bar' to the middle of 'func'. | |
| 24 | ||
| 25 | if {![istarget "riscv*-*-*"]} { | |
| 26 | verbose "Skipping ${gdb_test_file_name}." | |
| 27 | return | |
| 28 | } | |
| 29 | ||
| 30 | foreach_with_prefix {insn_size} {6 8} { | |
| 31 | standard_testfile riscv-unwind-long-insn.c \ | |
| 32 | riscv-unwind-long-insn-${insn_size}.s | |
| 33 | ||
| 34 | set testfile "${testfile}-${insn_size}" | |
| 35 | if {[prepare_for_testing "failed to prepare" $testfile \ | |
| 36 | "$srcfile $srcfile2" debug]} { | |
| 37 | return -1 | |
| 38 | } | |
| 39 | ||
| 40 | if ![runto_main] then { | |
| 41 | fail "can't run to main" | |
| 42 | return 0 | |
| 43 | } | |
| 44 | ||
| 45 | gdb_breakpoint "bar" | |
| 46 | gdb_continue_to_breakpoint "bar" | |
| 47 | ||
| 48 | # This next single instruction step takes us through a tail-call | |
| 49 | # from 'bar' into 'func'. | |
| 50 | gdb_test "si" "func \(\).*" | |
| 51 | ||
| 52 | # Now check that we have a sane backtrace. | |
| 53 | gdb_test "bt" \ | |
| 54 | [multi_line \ | |
| 55 | "#0\[ \t\]*func \\\(\\\) at .*$srcfile2:\[0-9\]+" \ | |
| 56 | "#1\[ \t\]*$hex in main \\\(\\\) at .*$srcfile:\[0-9\]+"] \ | |
| 57 | "Backtrace to the main frame" | |
| 58 | ||
| 59 | # Finally finish, and we should end up back in main. | |
| 60 | gdb_test "finish" "main \\\(\\\) at .*$srcfile:.*" | |
| 61 | } |