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

   1 # Copyright (C) 2003-2018 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 if { ![is_x86_like_target] } then {
  25     verbose "Skipping i386 prologue tests."
  26     return
  27 }
  28
  29 set testfile "i386-prologue"
  30 set srcfile ${testfile}.c
  31 set binfile [standard_output_file ${testfile}]
  32
  33 # some targets have leading underscores on assembly symbols.
  34 set additional_flags [gdb_target_symbol_prefix_flags]
  35
  36 # Don't use "debug", so that we don't have line information for the assembly
  37 # fragments.
  38 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  39     untested "failed to compile"
  40     return -1
  41 }
  42
  43
  44 # The code used by the tests here encodes some breakpoints by using
  45 # inline assembler.  This will generate a SIGTRAP which will be caught
  46 # by GDB.  At that point the instruction pointer will point at the
  47 # next instruction, and execution can continue without any problems.
  48 # Some systems however (QNX Neutrino, Solaris) will adjust the
  49 # instruction pointer to point at the breakpoint instruction instead.
  50 # On these systems we cannot continue unless we skip it.  This
  51 # procedure takes care of that.
  52
  53 proc skip_breakpoint { msg } {
  54     gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
  55             "" "skip breakpoint in ${msg}"
  56 }
  57
  58
  59 gdb_exit
  60 gdb_start
  61 gdb_reinitialize_dir $srcdir/$subdir
  62 gdb_load ${binfile}
  63
  64 #
  65 # Run to `main' where we begin our tests.
  66 #
  67
  68 if ![runto_main] then {
  69     gdb_suppress_tests
  70 }
  71
  72 # Testcase for standard prologue.
  73
  74 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
  75
  76 skip_breakpoint standard
  77
  78 gdb_test "backtrace 10" \
  79         "#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
  80         "backtrace in standard"
  81
  82 gdb_test "info frame" \
  83         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
  84         "saved registers in standard"
  85
  86
  87 # Testcase from breakpoints/2080 (when %ecx is used)
  88
  89 gdb_test "break *(stack_align_ecx + 7)" \
  90         "Breakpoint \[0-9\]* at $hex"
  91
  92 gdb_test "continue" \
  93         "Breakpoint \[0-9\]*.*stack_align_ecx.*" \
  94         "continue to stack_align_ecx + 7"
  95
  96 gdb_test "backtrace 10" \
  97         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
  98         "first backtrace in stack_align_ecx"
  99
 100 gdb_test "continue" \
 101         "Program received signal SIGTRAP.*" \
 102         "continue in stack_align_ecx"
 103
 104 skip_breakpoint stack_align_ecx
 105
 106 gdb_test "backtrace 10" \
 107         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 108         "second backtrace in stack_align_ecx"
 109
 110 gdb_test "info frame" \
 111         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 112         "saved registers in stack_align_ecx"
 113
 114
 115 # Testcase from breakpoints/2080 (when %edx is used)
 116
 117 gdb_test "break *(stack_align_edx + 7)" \
 118         "Breakpoint \[0-9\]* at $hex"
 119
 120 gdb_test "continue" \
 121         "Breakpoint \[0-9\]*.*stack_align_edx.*" \
 122         "continue to stack_align_edx + 7"
 123
 124 gdb_test "backtrace 10" \
 125         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 126         "first backtrace in stack_align_edx"
 127
 128 gdb_test "continue" \
 129         "Program received signal SIGTRAP.*" \
 130         "continue in stack_align_edx"
 131
 132 skip_breakpoint stack_align_edx
 133
 134 gdb_test "backtrace 10" \
 135         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 136         "second backtrace in stack_align_edx"
 137
 138 gdb_test "info frame" \
 139         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 140         "saved registers in stack_align_edx"
 141
 142
 143 # Testcase from breakpoints/2080 (when %eax is used)
 144
 145 gdb_test "break *(stack_align_eax + 7)" \
 146         "Breakpoint \[0-9\]* at $hex"
 147
 148 gdb_test "continue" \
 149         "Breakpoint \[0-9\]*.*stack_align_eax.*" \
 150         "continue to stack_align_eax + 7"
 151
 152 gdb_test "backtrace 10" \
 153         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 154         "first backtrace in stack_align_eax"
 155
 156 gdb_test "continue" \
 157         "Program received signal SIGTRAP.*" \
 158         "continue in stack_align_eax"
 159
 160 skip_breakpoint stack_align_eax
 161
 162 gdb_test "backtrace 10" \
 163         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 164         "second backtrace in stack_align_eax"
 165
 166 gdb_test "info frame" \
 167         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 168         "saved registers in stack_align_eax"
 169
 170
 171 # Testcase from symtab/1253.
 172
 173 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 174
 175 skip_breakpoint gdb1253
 176
 177 gdb_test "backtrace 10" \
 178         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 179         "backtrace in gdb1253"
 180
 181 gdb_test "info frame" \
 182         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 183         "saved registers in gdb1253"
 184
 185
 186 # Testcase from backtrace/1718.
 187
 188 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 189
 190 skip_breakpoint gdb1718
 191
 192 gdb_test "backtrace 10" \
 193         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 194         "backtrace in gdb1718"
 195
 196 setup_kfail gdb/1718 *-*-*
 197 gdb_test "info frame" \
 198         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 199         "saved registers in gdb1718"
 200
 201
 202 # Testcase from backtrace/1338.
 203
 204 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 205
 206 skip_breakpoint gdb1338
 207
 208 gdb_test "backtrace 10" \
 209         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 210         "backtrace in gdb1338"
 211
 212 gdb_test "info frame" \
 213         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 214         "saved registers in gdb1338"
 215
 216 # Testcase jump_at_beginning.
 217 gdb_test_multiple "break jump_at_beginning" \
 218         "set breakpoint in jump_at_beginning" {
 219     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 220         gdb_test "x/i $expect_out(1,string)" \
 221                 ".*<jump_at_beginning.*>:.*jmp.*" \
 222                 "check jump_at_beginning prologue end"
 223     }
 224     default {
 225         fail "set breakpoint in jump_at_beginning"
 226     }
 227 }