gnu/dist/gdb6/gdb/testsuite/gdb.arch/i386-prologue.exp

   1 # Copyright (C) 2003, 2004, 2006 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  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 set prms_id 0
  29 set bug_id 0
  30
  31 if ![istarget "i?86-*-*"] then {
  32     verbose "Skipping i386 prologue tests."
  33     return
  34 }
  35
  36 set testfile "i386-prologue"
  37 set srcfile ${testfile}.c
  38 set binfile ${objdir}/${subdir}/${testfile}
  39
  40 # some targets have leading underscores on assembly symbols.
  41 # TODO: detect this automatically
  42 set additional_flags ""
  43 if [istarget "i?86-*-cygwin*"] then {
  44   set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
  45 }
  46
  47 # Don't use "debug", so that we don't have line information for the assembly
  48 # fragments.
  49 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list $additional_flags]] != "" } {
  50     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  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.
  98
  99 gdb_test "break *(stack_align + 7)" \
 100         "Breakpoint \[0-9\]* at $hex"
 101
 102 gdb_test "continue" \
 103         "Breakpoint \[0-9\]*.*stack_align.*" \
 104         "continue to stack_align + 7"
 105
 106 setup_kfail *-*-* gdb/2080
 107 gdb_test "backtrace 10" \
 108         "#0\[ \t\]*$hex in stack_align.*\r\n#1\[ \t\]*$hex in main.*" \
 109         "first backtrace in stack_align"
 110
 111 gdb_test "continue" \
 112         "Program received signal SIGTRAP.*" \
 113         "continue in stack_align"
 114
 115 skip_breakpoint stack_align
 116
 117 setup_kfail *-*-* gdb/2080
 118 gdb_test "backtrace 10" \
 119         "#0\[ \t\]*$hex in stack_align.*\r\n#1\[ \t\]*$hex in main.*" \
 120         "second backtrace in stack_align"
 121
 122 setup_kfail *-*-* gdb/2080
 123 gdb_test "info frame" \
 124         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 125         "saved registers in stack_align"
 126
 127
 128 # Testcase from symtab/1253.
 129
 130 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 131
 132 skip_breakpoint gdb1253
 133
 134 gdb_test "backtrace 10" \
 135         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 136         "backtrace in gdb1253"
 137
 138 gdb_test "info frame" \
 139         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 140         "saved registers in gdb1253"
 141
 142
 143 # Testcase from backtrace/1718.
 144
 145 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 146
 147 skip_breakpoint gdb1718
 148
 149 gdb_test "backtrace 10" \
 150         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 151         "backtrace in gdb1718"
 152
 153 setup_kfail *-*-* gdb/1718
 154 gdb_test "info frame" \
 155         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 156         "saved registers in gdb1718"
 157
 158
 159 # Testcase from backtrace/1338.
 160
 161 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 162
 163 skip_breakpoint gdb1338
 164
 165 gdb_test "backtrace 10" \
 166         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 167         "backtrace in gdb1338"
 168
 169 gdb_test "info frame" \
 170         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 171         "saved registers in gdb1338"
 172
 173 # Testcase jump_at_beginning.
 174 gdb_test_multiple "break jump_at_beginning" \
 175         "set breakpoint in jump_at_beginning" {
 176     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 177         gdb_test "x/i $expect_out(1,string)" \
 178                 ".*<jump_at_beginning.*>:.*jmp.*" \
 179                 "check jump_at_beginning prologue end"
 180     }
 181     default {
 182         fail "set breakpoint in jump_at_beginning"
 183     }
 184 }