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     untested i386-prologue.exp
  51     return -1
  52 }
  53
  54
  55 # The code used by the tests here encodes some breakpoints by using
  56 # inline assembler.  This will generate a SIGTRAP which will be caught
  57 # by GDB.  At that point the instruction pointer will point at the
  58 # next instruction, and execution can continue without any problems.
  59 # Some systems however (QNX Neutrino, Solaris) will adjust the
  60 # instruction pointer to point at the breakpoint instruction instead.
  61 # On these systems we cannot continue unless we skip it.  This
  62 # procedure takes care of that.
  63
  64 proc skip_breakpoint { msg } {
  65     gdb_test "if (*(unsigned char *)\$pc == 0xcc)\nset \$pc = \$pc + 1\nend" \
  66             "" "skip breakpoint in ${msg}"
  67 }
  68
  69
  70 gdb_exit
  71 gdb_start
  72 gdb_reinitialize_dir $srcdir/$subdir
  73 gdb_load ${binfile}
  74
  75 #
  76 # Run to `main' where we begin our tests.
  77 #
  78
  79 if ![runto_main] then {
  80     gdb_suppress_tests
  81 }
  82
  83 # Testcase for standard prologue.
  84
  85 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to standard"
  86
  87 skip_breakpoint standard
  88
  89 gdb_test "backtrace 10" \
  90         "#0\[ \t\]*$hex in standard.*\r\n#1\[ \t\]*$hex in main.*" \
  91         "backtrace in standard"
  92
  93 gdb_test "info frame" \
  94         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
  95         "saved registers in standard"
  96
  97
  98 # Testcase from breakpoints/2080.
  99
 100 gdb_test "break *(stack_align + 7)" \
 101         "Breakpoint \[0-9\]* at $hex"
 102
 103 gdb_test "continue" \
 104         "Breakpoint \[0-9\]*.*stack_align.*" \
 105         "continue to stack_align + 7"
 106
 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 gdb_test "backtrace 10" \
 118         "#0\[ \t\]*$hex in stack_align.*\r\n#1\[ \t\]*$hex in main.*" \
 119         "second backtrace in stack_align"
 120
 121 gdb_test "info frame" \
 122         ".*Saved registers:.*ecx at.*ebp at.*edi at.*eip at.*" \
 123         "saved registers in stack_align"
 124
 125
 126 # Testcase from symtab/1253.
 127
 128 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1253"
 129
 130 skip_breakpoint gdb1253
 131
 132 gdb_test "backtrace 10" \
 133         "#0\[ \t\]*$hex in gdb1253.*\r\n#1\[ \t\]*$hex in main.*" \
 134         "backtrace in gdb1253"
 135
 136 gdb_test "info frame" \
 137         ".*Saved registers:.*ebp at.*edi at.*eip at.*" \
 138         "saved registers in gdb1253"
 139
 140
 141 # Testcase from backtrace/1718.
 142
 143 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1718"
 144
 145 skip_breakpoint gdb1718
 146
 147 gdb_test "backtrace 10" \
 148         "#0\[ \t\]*$hex in gdb1718.*\r\n#1\[ \t\]*$hex in main.*" \
 149         "backtrace in gdb1718"
 150
 151 setup_kfail *-*-* gdb/1718
 152 gdb_test "info frame" \
 153         ".*Saved registers:.*esi at.*ebx at.*eip at.*" \
 154         "saved registers in gdb1718"
 155
 156
 157 # Testcase from backtrace/1338.
 158
 159 gdb_test "continue" "Program received signal SIGTRAP.*" "continue to gdb1338"
 160
 161 skip_breakpoint gdb1338
 162
 163 gdb_test "backtrace 10" \
 164         "#0\[ \t\]*$hex in gdb1338.*\r\n#1\[ \t\]*$hex in main.*" \
 165         "backtrace in gdb1338"
 166
 167 gdb_test "info frame" \
 168         ".*Saved registers:.*ebx at.*esi at.*edi at.*eip at.*" \
 169         "saved registers in gdb1338"
 170
 171 # Testcase jump_at_beginning.
 172 gdb_test_multiple "break jump_at_beginning" \
 173         "set breakpoint in jump_at_beginning" {
 174     -re "Breakpoint \[0-9\]* at ($hex).*$gdb_prompt $" {
 175         gdb_test "x/i $expect_out(1,string)" \
 176                 ".*<jump_at_beginning.*>:.*jmp.*" \
 177                 "check jump_at_beginning prologue end"
 178     }
 179     default {
 180         fail "set breakpoint in jump_at_beginning"
 181     }
 182 }