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# Copyright (C) 2003-2024 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/>.
# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@gnu.org
# This file is part of the gdb testsuite.
# Test i386 prologue analyzer.
require is_x86_like_target
set testfile "i386-prologue"
set srcfile ${testfile}.c
set binfile [standard_output_file ${testfile}]
# some targets have leading underscores on assembly symbols.
set additional_flags [gdb_target_symbol_prefix_flags]
# Don't use "debug", so that we don't have line information for the assembly
# fragments.
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
untested "failed to compile"
return -1
}
# The code used by the tests here encodes some breakpoints by using
# inline assembler. This will generate a SIGTRAP which will be caught
# by GDB. At that point the instruction pointer will point at the
# next instruction, and execution can continue without any problems.
# Some systems however (QNX Neutrino, Solaris) will adjust the
# instruction pointer to point at the breakpoint instruction instead.
# On these systems we cannot continue unless we skip it. This
# procedure takes care of that.
proc skip_breakpoint { msg } {
gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
"" "skip breakpoint in ${msg}"
}
clean_restart $binfile
#
# Run to `main' where we begin our tests.
#
if {![runto_main]} {
return 0
}
# Testcase for standard prologue.
gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
skip_breakpoint standard
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
"backtrace in standard"
gdb_test "info frame" \
".*Saved registers:.*ebp at.*edi at.*eip at.*" \
"saved registers in standard"
# Testcase from breakpoints/2080 (when %ecx is used)
gdb_test "break *(stack_align_ecx + 7)" \
"Breakpoint \[0-9\]* at $hex"
gdb_test "continue" \
"Breakpoint \[0-9\]*.*stack_align_ecx.*" \
"continue to stack_align_ecx + 7"
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
"first backtrace in stack_align_ecx"
gdb_test "continue" \
"Program received signal SIGTRAP.*" \
"continue in stack_align_ecx"
skip_breakpoint stack_align_ecx
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
"second backtrace in stack_align_ecx"
gdb_test "info frame" \
".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
"saved registers in stack_align_ecx"
# Testcase from breakpoints/2080 (when %edx is used)
gdb_test "break *(stack_align_edx + 7)" \
"Breakpoint \[0-9\]* at $hex"
gdb_test "continue" \
"Breakpoint \[0-9\]*.*stack_align_edx.*" \
"continue to stack_align_edx + 7"
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
"first backtrace in stack_align_edx"
gdb_test "continue" \
"Program received signal SIGTRAP.*" \
"continue in stack_align_edx"
skip_breakpoint stack_align_edx
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
"second backtrace in stack_align_edx"
gdb_test "info frame" \
".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
"saved registers in stack_align_edx"
# Testcase from breakpoints/2080 (when %eax is used)
gdb_test "break *(stack_align_eax + 7)" \
"Breakpoint \[0-9\]* at $hex"
gdb_test "continue" \
"Breakpoint \[0-9\]*.*stack_align_eax.*" \
"continue to stack_align_eax + 7"
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
"first backtrace in stack_align_eax"
gdb_test "continue" \
"Program received signal SIGTRAP.*" \
"continue in stack_align_eax"
skip_breakpoint stack_align_eax
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
"second backtrace in stack_align_eax"
gdb_test "info frame" \
".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
"saved registers in stack_align_eax"
# Testcase from symtab/1253.
gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
skip_breakpoint gdb1253
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
"backtrace in gdb1253"
gdb_test "info frame" \
".*Saved registers:.*ebp at.*edi at.*eip at.*" \
"saved registers in gdb1253"
# Testcase from backtrace/1718.
gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
skip_breakpoint gdb1718
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
"backtrace in gdb1718"
setup_kfail gdb/1718 *-*-*
gdb_test "info frame" \
".*Saved registers:.*esi at.*ebx at.*eip at.*" \
"saved registers in gdb1718"
# Testcase from backtrace/1338.
gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
skip_breakpoint gdb1338
gdb_test "backtrace 10" \
"#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
"backtrace in gdb1338"
gdb_test "info frame" \
".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
"saved registers in gdb1338"
# Testcase jump_at_beginning.
gdb_test_multiple "break jump_at_beginning" \
"set breakpoint in jump_at_beginning" {
-re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
gdb_test "x/i $expect_out(1,string)" \
".*<jump_at_beginning.*>:.*jmp.*" \
"check jump_at_beginning prologue end"
}
default {
fail "set breakpoint in jump_at_beginning"
}
}
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