gdb/testsuite/gdb.arch/i386-prologue.exp

   1 # Copyright (C) 2003-2024 Free Software Foundation, Inc.
   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 # Please email any bugs, comments, and/or additions to this file to:
  17 # bug-gdb@gnu.org
  18
  19 # This file is part of the gdb testsuite.
  20
  21 # Test i386 prologue analyzer.
  22
  23
  24 require is_x86_like_target
  25
  26 set testfile "i386-prologue"
  27 set srcfile ${testfile}.c
  28 set binfile [standard_output_file ${testfile}]
  29
  30 # some targets have leading underscores on assembly symbols.
  31 set additional_flags [gdb_target_symbol_prefix_flags]
  32
  33 # Don't use "debug", so that we don't have line information for the assembly
  34 # fragments.
  35 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  36     untested "failed to compile"
  37     return -1
  38 }
  39
  40
  41 # The code used by the tests here encodes some breakpoints by using
  42 # inline assembler.  This will generate a SIGTRAP which will be caught
  43 # by GDB.  At that point the instruction pointer will point at the
  44 # next instruction, and execution can continue without any problems.
  45 # Some systems however (QNX Neutrino, Solaris) will adjust the
  46 # instruction pointer to point at the breakpoint instruction instead.
  47 # On these systems we cannot continue unless we skip it.  This
  48 # procedure takes care of that.
  49
  50 proc skip_breakpoint { msg } {
  51     gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
  52             "" "skip breakpoint in ${msg}"
  53 }
  54
  55
  56 clean_restart $binfile
  57
  58 #
  59 # Run to `main' where we begin our tests.
  60 #
  61
  62 if {![runto_main]} {
  63     return 0
  64 }
  65
  66 # Testcase for standard prologue.
  67
  68 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
  69
  70 skip_breakpoint standard
  71
  72 gdb_test "backtrace 10" \
  73         "#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
  74         "backtrace in standard"
  75
  76 gdb_test "info frame" \
  77         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
  78         "saved registers in standard"
  79
  80
  81 # Testcase from breakpoints/2080 (when %ecx is used)
  82
  83 gdb_test "break *(stack_align_ecx + 7)" \
  84         "Breakpoint \[0-9\]* at $hex"
  85
  86 gdb_test "continue" \
  87         "Breakpoint \[0-9\]*.*stack_align_ecx.*" \
  88         "continue to stack_align_ecx + 7"
  89
  90 gdb_test "backtrace 10" \
  91         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
  92         "first backtrace in stack_align_ecx"
  93
  94 gdb_test "continue" \
  95         "Program received signal SIGTRAP.*" \
  96         "continue in stack_align_ecx"
  97
  98 skip_breakpoint stack_align_ecx
  99
 100 gdb_test "backtrace 10" \
 101         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 102         "second backtrace in stack_align_ecx"
 103
 104 gdb_test "info frame" \
 105         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 106         "saved registers in stack_align_ecx"
 107
 108
 109 # Testcase from breakpoints/2080 (when %edx is used)
 110
 111 gdb_test "break *(stack_align_edx + 7)" \
 112         "Breakpoint \[0-9\]* at $hex"
 113
 114 gdb_test "continue" \
 115         "Breakpoint \[0-9\]*.*stack_align_edx.*" \
 116         "continue to stack_align_edx + 7"
 117
 118 gdb_test "backtrace 10" \
 119         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 120         "first backtrace in stack_align_edx"
 121
 122 gdb_test "continue" \
 123         "Program received signal SIGTRAP.*" \
 124         "continue in stack_align_edx"
 125
 126 skip_breakpoint stack_align_edx
 127
 128 gdb_test "backtrace 10" \
 129         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 130         "second backtrace in stack_align_edx"
 131
 132 gdb_test "info frame" \
 133         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 134         "saved registers in stack_align_edx"
 135
 136
 137 # Testcase from breakpoints/2080 (when %eax is used)
 138
 139 gdb_test "break *(stack_align_eax + 7)" \
 140         "Breakpoint \[0-9\]* at $hex"
 141
 142 gdb_test "continue" \
 143         "Breakpoint \[0-9\]*.*stack_align_eax.*" \
 144         "continue to stack_align_eax + 7"
 145
 146 gdb_test "backtrace 10" \
 147         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 148         "first backtrace in stack_align_eax"
 149
 150 gdb_test "continue" \
 151         "Program received signal SIGTRAP.*" \
 152         "continue in stack_align_eax"
 153
 154 skip_breakpoint stack_align_eax
 155
 156 gdb_test "backtrace 10" \
 157         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 158         "second backtrace in stack_align_eax"
 159
 160 gdb_test "info frame" \
 161         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 162         "saved registers in stack_align_eax"
 163
 164
 165 # Testcase from symtab/1253.
 166
 167 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 168
 169 skip_breakpoint gdb1253
 170
 171 gdb_test "backtrace 10" \
 172         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 173         "backtrace in gdb1253"
 174
 175 gdb_test "info frame" \
 176         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 177         "saved registers in gdb1253"
 178
 179
 180 # Testcase from backtrace/1718.
 181
 182 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 183
 184 skip_breakpoint gdb1718
 185
 186 gdb_test "backtrace 10" \
 187         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 188         "backtrace in gdb1718"
 189
 190 setup_kfail gdb/1718 *-*-*
 191 gdb_test "info frame" \
 192         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 193         "saved registers in gdb1718"
 194
 195
 196 # Testcase from backtrace/1338.
 197
 198 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 199
 200 skip_breakpoint gdb1338
 201
 202 gdb_test "backtrace 10" \
 203         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 204         "backtrace in gdb1338"
 205
 206 gdb_test "info frame" \
 207         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 208         "saved registers in gdb1338"
 209
 210 # Testcase jump_at_beginning.
 211 gdb_test_multiple "break jump_at_beginning" \
 212         "set breakpoint in jump_at_beginning" {
 213     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 214         gdb_test "x/i $expect_out(1,string)" \
 215                 ".*<jump_at_beginning.*>:.*jmp.*" \
 216                 "check jump_at_beginning prologue end"
 217     }
 218     default {
 219         fail "set breakpoint in jump_at_beginning"
 220     }
 221 }