| # Copyright 2021-2024 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/>. |
| |
| # Set a breakpoint on a local copy of glibc's _exit, and verify that it |
| # triggers. The function does a syscall immediately after the prologue, and |
| # if the breakpoint is set past the syscall due to faulty prologue skipping, |
| # the breakpoint will not trigger. |
| # |
| # In particular, we're trying to excercise the instruction analysis |
| # functionality of prologue skipping. If non-minimal symbols are |
| # read, then that functionality might not be used because f.i. |
| # line-info is used instead. So, we use nodebug. |
| |
| require {istarget "powerpc*"} is_lp64_target |
| |
| set flags { nodebug } |
| if [info exists COMPILE] { |
| standard_testfile .c -main.c |
| lappend flags optimize=-O2 |
| lappend flags additional_flags=-fno-stack-protector |
| lappend flags additional_flags=-mlong-double-128 |
| lappend flags additional_flags=-fpic |
| lappend flags additional_flags=-ftls-model=initial-exec |
| } else { |
| standard_testfile .s -main.c |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile} \ |
| [list $srcfile $srcfile2] $flags] } { |
| return -1 |
| } |
| |
| if {![runto_main]} { |
| return 0 |
| } |
| |
| gdb_breakpoint "_exit" |
| |
| # If the skip_prologue analysis of _exit is too eager, we may not hit the |
| # breakpoint. |
| gdb_continue_to_breakpoint "_exit" "_exit \\(\\).*" |