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

   1 # Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@gnu.org
  19
  20 # This file is part of the gdb testsuite.
  21
  22 if $tracelevel {
  23     strace $tracelevel
  24 }
  25
  26 # Test i386 prologue analyzer.
  27
  28
  29 if {(![istarget "x86_64-*-*"] && ![istarget "i?86-*-*"]) || ![is_ilp32_target] } then {
  30     verbose "Skipping i386 prologue tests."
  31     return
  32 }
  33
  34 set testfile "i386-prologue"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 # some targets have leading underscores on assembly symbols.
  39 # TODO: detect this automatically
  40 set additional_flags ""
  41 if { [istarget "*-*-cygwin*"] || [istarget "*-*-mingw*"] } then {
  42   set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
  43 }
  44
  45 # Don't use "debug", so that we don't have line information for the assembly
  46 # fragments.
  47 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  48     untested i386-prologue.exp
  49     return -1
  50 }
  51
  52
  53 # The code used by the tests here encodes some breakpoints by using
  54 # inline assembler.  This will generate a SIGTRAP which will be caught
  55 # by GDB.  At that point the instruction pointer will point at the
  56 # next instruction, and execution can continue without any problems.
  57 # Some systems however (QNX Neutrino, Solaris) will adjust the
  58 # instruction pointer to point at the breakpoint instruction instead.
  59 # On these systems we cannot continue unless we skip it.  This
  60 # procedure takes care of that.
  61
  62 proc skip_breakpoint { msg } {
  63     gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
  64             "" "skip breakpoint in ${msg}"
  65 }
  66
  67
  68 gdb_exit
  69 gdb_start
  70 gdb_reinitialize_dir $srcdir/$subdir
  71 gdb_load ${binfile}
  72
  73 #
  74 # Run to `main' where we begin our tests.
  75 #
  76
  77 if ![runto_main] then {
  78     gdb_suppress_tests
  79 }
  80
  81 # Testcase for standard prologue.
  82
  83 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
  84
  85 skip_breakpoint standard
  86
  87 gdb_test "backtrace 10" \
  88         "#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
  89         "backtrace in standard"
  90
  91 gdb_test "info frame" \
  92         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
  93         "saved registers in standard"
  94
  95
  96 # Testcase from breakpoints/2080 (when %ecx is used)
  97
  98 gdb_test "break *(stack_align_ecx + 7)" \
  99         "Breakpoint \[0-9\]* at $hex"
 100
 101 gdb_test "continue" \
 102         "Breakpoint \[0-9\]*.*stack_align_ecx.*" \
 103         "continue to stack_align_ecx + 7"
 104
 105 gdb_test "backtrace 10" \
 106         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 107         "first backtrace in stack_align_ecx"
 108
 109 gdb_test "continue" \
 110         "Program received signal SIGTRAP.*" \
 111         "continue in stack_align_ecx"
 112
 113 skip_breakpoint stack_align_ecx
 114
 115 gdb_test "backtrace 10" \
 116         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 117         "second backtrace in stack_align_ecx"
 118
 119 gdb_test "info frame" \
 120         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 121         "saved registers in stack_align_ecx"
 122
 123
 124 # Testcase from breakpoints/2080 (when %edx is used)
 125
 126 gdb_test "break *(stack_align_edx + 7)" \
 127         "Breakpoint \[0-9\]* at $hex"
 128
 129 gdb_test "continue" \
 130         "Breakpoint \[0-9\]*.*stack_align_edx.*" \
 131         "continue to stack_align_edx + 7"
 132
 133 gdb_test "backtrace 10" \
 134         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 135         "first backtrace in stack_align_edx"
 136
 137 gdb_test "continue" \
 138         "Program received signal SIGTRAP.*" \
 139         "continue in stack_align_edx"
 140
 141 skip_breakpoint stack_align_edx
 142
 143 gdb_test "backtrace 10" \
 144         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 145         "second backtrace in stack_align_edx"
 146
 147 gdb_test "info frame" \
 148         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 149         "saved registers in stack_align_edx"
 150
 151
 152 # Testcase from breakpoints/2080 (when %eax is used)
 153
 154 gdb_test "break *(stack_align_eax + 7)" \
 155         "Breakpoint \[0-9\]* at $hex"
 156
 157 gdb_test "continue" \
 158         "Breakpoint \[0-9\]*.*stack_align_eax.*" \
 159         "continue to stack_align_eax + 7"
 160
 161 gdb_test "backtrace 10" \
 162         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 163         "first backtrace in stack_align_eax"
 164
 165 gdb_test "continue" \
 166         "Program received signal SIGTRAP.*" \
 167         "continue in stack_align_eax"
 168
 169 skip_breakpoint stack_align_eax
 170
 171 gdb_test "backtrace 10" \
 172         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 173         "second backtrace in stack_align_eax"
 174
 175 gdb_test "info frame" \
 176         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 177         "saved registers in stack_align_eax"
 178
 179
 180 # Testcase from symtab/1253.
 181
 182 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 183
 184 skip_breakpoint gdb1253
 185
 186 gdb_test "backtrace 10" \
 187         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 188         "backtrace in gdb1253"
 189
 190 gdb_test "info frame" \
 191         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 192         "saved registers in gdb1253"
 193
 194
 195 # Testcase from backtrace/1718.
 196
 197 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 198
 199 skip_breakpoint gdb1718
 200
 201 gdb_test "backtrace 10" \
 202         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 203         "backtrace in gdb1718"
 204
 205 setup_kfail gdb/1718 *-*-*
 206 gdb_test "info frame" \
 207         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 208         "saved registers in gdb1718"
 209
 210
 211 # Testcase from backtrace/1338.
 212
 213 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 214
 215 skip_breakpoint gdb1338
 216
 217 gdb_test "backtrace 10" \
 218         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 219         "backtrace in gdb1338"
 220
 221 gdb_test "info frame" \
 222         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 223         "saved registers in gdb1338"
 224
 225 # Testcase jump_at_beginning.
 226 gdb_test_multiple "break jump_at_beginning" \
 227         "set breakpoint in jump_at_beginning" {
 228     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 229         gdb_test "x/i $expect_out(1,string)" \
 230                 ".*<jump_at_beginning.*>:.*jmp.*" \
 231                 "check jump_at_beginning prologue end"
 232     }
 233     default {
 234         fail "set breakpoint in jump_at_beginning"
 235     }
 236 }