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

   1 # Copyright (C) 2003, 2004, 2006, 2007, 2008 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 if $tracelevel {
  22     strace $tracelevel
  23 }
  24
  25 # Test i386 prologue analyzer.
  26
  27 set prms_id 0
  28 set bug_id 0
  29
  30 if ![istarget "i?86-*-*"] then {
  31     verbose "Skipping i386 prologue tests."
  32     return
  33 }
  34
  35 set testfile "i386-prologue"
  36 set srcfile ${testfile}.c
  37 set binfile ${objdir}/${subdir}/${testfile}
  38
  39 # some targets have leading underscores on assembly symbols.
  40 # TODO: detect this automatically
  41 set additional_flags ""
  42 if [istarget "i?86-*-cygwin*"] then {
  43   set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
  44 }
  45
  46 # Don't use "debug", so that we don't have line information for the assembly
  47 # fragments.
  48 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  49     untested i386-prologue.exp
  50     return -1
  51 }
  52
  53
  54 # The code used by the tests here encodes some breakpoints by using
  55 # inline assembler.  This will generate a SIGTRAP which will be caught
  56 # by GDB.  At that point the instruction pointer will point at the
  57 # next instruction, and execution can continue without any problems.
  58 # Some systems however (QNX Neutrino, Solaris) will adjust the
  59 # instruction pointer to point at the breakpoint instruction instead.
  60 # On these systems we cannot continue unless we skip it.  This
  61 # procedure takes care of that.
  62
  63 proc skip_breakpoint { msg } {
  64     gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
  65             "" "skip breakpoint in ${msg}"
  66 }
  67
  68
  69 gdb_exit
  70 gdb_start
  71 gdb_reinitialize_dir $srcdir/$subdir
  72 gdb_load ${binfile}
  73
  74 #
  75 # Run to `main' where we begin our tests.
  76 #
  77
  78 if ![runto_main] then {
  79     gdb_suppress_tests
  80 }
  81
  82 # Testcase for standard prologue.
  83
  84 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
  85
  86 skip_breakpoint standard
  87
  88 gdb_test "backtrace 10" \
  89         "#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
  90         "backtrace in standard"
  91
  92 gdb_test "info frame" \
  93         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
  94         "saved registers in standard"
  95
  96
  97 # Testcase from breakpoints/2080 (when %ecx is used)
  98
  99 gdb_test "break *(stack_align_ecx + 7)" \
 100         "Breakpoint \[0-9\]* at $hex"
 101
 102 gdb_test "continue" \
 103         "Breakpoint \[0-9\]*.*stack_align_ecx.*" \
 104         "continue to stack_align_ecx + 7"
 105
 106 gdb_test "backtrace 10" \
 107         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 108         "first backtrace in stack_align_ecx"
 109
 110 gdb_test "continue" \
 111         "Program received signal SIGTRAP.*" \
 112         "continue in stack_align_ecx"
 113
 114 skip_breakpoint stack_align_ecx
 115
 116 gdb_test "backtrace 10" \
 117         "#0\[ \t\]*$hex in stack_align_ecx.*\r\n#1\[ \t\]*$hex in main.*" \
 118         "second backtrace in stack_align_ecx"
 119
 120 gdb_test "info frame" \
 121         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 122         "saved registers in stack_align_ecx"
 123
 124
 125 # Testcase from breakpoints/2080 (when %edx is used)
 126
 127 gdb_test "break *(stack_align_edx + 7)" \
 128         "Breakpoint \[0-9\]* at $hex"
 129
 130 gdb_test "continue" \
 131         "Breakpoint \[0-9\]*.*stack_align_edx.*" \
 132         "continue to stack_align_edx + 7"
 133
 134 gdb_test "backtrace 10" \
 135         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 136         "first backtrace in stack_align_edx"
 137
 138 gdb_test "continue" \
 139         "Program received signal SIGTRAP.*" \
 140         "continue in stack_align_edx"
 141
 142 skip_breakpoint stack_align_edx
 143
 144 gdb_test "backtrace 10" \
 145         "#0\[ \t\]*$hex in stack_align_edx.*\r\n#1\[ \t\]*$hex in main.*" \
 146         "second backtrace in stack_align_edx"
 147
 148 gdb_test "info frame" \
 149         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 150         "saved registers in stack_align_edx"
 151
 152
 153 # Testcase from breakpoints/2080 (when %eax is used)
 154
 155 gdb_test "break *(stack_align_eax + 7)" \
 156         "Breakpoint \[0-9\]* at $hex"
 157
 158 gdb_test "continue" \
 159         "Breakpoint \[0-9\]*.*stack_align_eax.*" \
 160         "continue to stack_align_eax + 7"
 161
 162 gdb_test "backtrace 10" \
 163         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 164         "first backtrace in stack_align_eax"
 165
 166 gdb_test "continue" \
 167         "Program received signal SIGTRAP.*" \
 168         "continue in stack_align_eax"
 169
 170 skip_breakpoint stack_align_eax
 171
 172 gdb_test "backtrace 10" \
 173         "#0\[ \t\]*$hex in stack_align_eax.*\r\n#1\[ \t\]*$hex in main.*" \
 174         "second backtrace in stack_align_eax"
 175
 176 gdb_test "info frame" \
 177         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 178         "saved registers in stack_align_eax"
 179
 180
 181 # Testcase from symtab/1253.
 182
 183 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 184
 185 skip_breakpoint gdb1253
 186
 187 gdb_test "backtrace 10" \
 188         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 189         "backtrace in gdb1253"
 190
 191 gdb_test "info frame" \
 192         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 193         "saved registers in gdb1253"
 194
 195
 196 # Testcase from backtrace/1718.
 197
 198 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 199
 200 skip_breakpoint gdb1718
 201
 202 gdb_test "backtrace 10" \
 203         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 204         "backtrace in gdb1718"
 205
 206 setup_kfail *-*-* gdb/1718
 207 gdb_test "info frame" \
 208         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 209         "saved registers in gdb1718"
 210
 211
 212 # Testcase from backtrace/1338.
 213
 214 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 215
 216 skip_breakpoint gdb1338
 217
 218 gdb_test "backtrace 10" \
 219         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 220         "backtrace in gdb1338"
 221
 222 gdb_test "info frame" \
 223         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 224         "saved registers in gdb1338"
 225
 226 # Testcase jump_at_beginning.
 227 gdb_test_multiple "break jump_at_beginning" \
 228         "set breakpoint in jump_at_beginning" {
 229     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 230         gdb_test "x/i $expect_out(1,string)" \
 231                 ".*<jump_at_beginning.*>:.*jmp.*" \
 232                 "check jump_at_beginning prologue end"
 233     }
 234     default {
 235         fail "set breakpoint in jump_at_beginning"
 236     }
 237 }