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

   1 /* Unwinder test program.
   2
   3    Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifdef SYMBOL_PREFIX
  22 #define SYMBOL(str)     SYMBOL_PREFIX #str
  23 #else
  24 #define SYMBOL(str)     #str
  25 #endif
  26
  27 void gdb1253 (void);
  28 void gdb1718 (void);
  29 void gdb1338 (void);
  30 void jump_at_beginning (void);
  31
  32 int
  33 main (void)
  34 {
  35   standard ();
  36   stack_align_ecx ();
  37   stack_align_edx ();
  38   stack_align_eax ();
  39   gdb1253 ();
  40   gdb1718 ();
  41   gdb1338 ();
  42   jump_at_beginning ();
  43   return 0;
  44 }
  45
  46 /* A normal prologue.  */
  47
  48 asm(".text\n"
  49     "    .align 8\n"
  50     SYMBOL (standard) ":\n"
  51     "    pushl %ebp\n"
  52     "    movl  %esp, %ebp\n"
  53     "    pushl %edi\n"
  54     "    int   $0x03\n"
  55     "    leave\n"
  56     "    ret\n");
  57
  58 /* Relevant part of the prologue from symtab/1253.  */
  59
  60 asm(".text\n"
  61     "    .align 8\n"
  62     SYMBOL (gdb1253) ":\n"
  63     "    pushl %ebp\n"
  64     "    xorl  %ecx, %ecx\n"
  65     "    movl  %esp, %ebp\n"
  66     "    pushl %edi\n"
  67     "    int   $0x03\n"
  68     "    leave\n"
  69     "    ret\n");
  70
  71 /* Relevant part of the prologue from backtrace/1718.  */
  72
  73 asm(".text\n"
  74     "    .align 8\n"
  75     SYMBOL (gdb1718) ":\n"
  76     "    pushl %ebp\n"
  77     "    movl  $0x11111111, %eax\n"
  78     "    movl  %esp, %ebp\n"
  79     "    pushl %esi\n"
  80     "    movl  $0x22222222, %esi\n"
  81     "    pushl %ebx\n"
  82     "    int   $0x03\n"
  83     "    leave\n"
  84     "    ret\n");
  85
  86 /* Relevant part of the prologue from backtrace/1338.  */
  87
  88 asm(".text\n"
  89     "    .align 8\n"
  90     SYMBOL (gdb1338) ":\n"
  91     "    pushl %edi\n"
  92     "    pushl %esi\n"
  93     "    pushl %ebx\n"
  94     "    int   $0x03\n"
  95     "    popl  %ebx\n"
  96     "    popl  %esi\n"
  97     "    popl  %edi\n"
  98     "    ret\n");
  99
 100 /* The purpose of this function is to verify that, during prologue
 101    skip, GDB does not follow a jump at the beginnning of the "real"
 102    code.  */
 103
 104 asm(".text\n"
 105     "    .align 8\n"
 106     SYMBOL (jump_at_beginning) ":\n"
 107     "    pushl %ebp\n"
 108     "    movl  %esp,%ebp\n"
 109     "    jmp   .gdbjump\n"
 110     "    nop\n"
 111     ".gdbjump:\n"
 112     "    movl  %ebp,%esp\n"
 113     "    popl  %ebp\n"
 114     "    ret\n");
 115
 116 asm(".text\n"
 117     "    .align 8\n"
 118     SYMBOL (stack_align_ecx) ":\n"
 119     "    leal  4(%esp), %ecx\n"
 120     "    andl  $-16, %esp\n"
 121     "    pushl -4(%ecx)\n"
 122     "    pushl %ebp\n"
 123     "    movl  %esp, %ebp\n"
 124     "    pushl %edi\n"
 125     "    pushl %ecx\n"
 126     "    int   $0x03\n"
 127     "    popl  %ecx\n"
 128     "    popl  %edi\n"
 129     "    popl  %ebp\n"
 130     "    leal  -4(%ecx), %esp\n"
 131     "    ret\n");
 132
 133 asm(".text\n"
 134     "    .align 8\n"
 135     SYMBOL (stack_align_edx) ":\n"
 136     "    leal  4(%esp), %edx\n"
 137     "    andl  $-16, %esp\n"
 138     "    pushl -4(%edx)\n"
 139     "    pushl %ebp\n"
 140     "    movl  %esp, %ebp\n"
 141     "    pushl %edi\n"
 142     "    pushl %ecx\n"
 143     "    int   $0x03\n"
 144     "    popl  %ecx\n"
 145     "    popl  %edi\n"
 146     "    popl  %ebp\n"
 147     "    leal  -4(%edx), %esp\n"
 148     "    ret\n");
 149
 150 asm(".text\n"
 151     "    .align 8\n"
 152     SYMBOL (stack_align_eax) ":\n"
 153     "    leal  4(%esp), %eax\n"
 154     "    andl  $-16, %esp\n"
 155     "    pushl -4(%eax)\n"
 156     "    pushl %ebp\n"
 157     "    movl  %esp, %ebp\n"
 158     "    pushl %edi\n"
 159     "    pushl %ecx\n"
 160     "    int   $0x03\n"
 161     "    popl  %ecx\n"
 162     "    popl  %edi\n"
 163     "    popl  %ebp\n"
 164     "    leal  -4(%eax), %esp\n"
 165     "    ret\n");
 166