1 /* Unwinder test program. 2 3 Copyright (C) 2003-2019 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifdef SYMBOL_PREFIX 21 #define SYMBOL(str) SYMBOL_PREFIX #str 22 #else 23 #define SYMBOL(str) #str 24 #endif 25 26 void gdb1253 (void); 27 void gdb1718 (void); 28 void gdb1338 (void); 29 void jump_at_beginning (void); 30 void standard (void); 31 void stack_align_ecx (void); 32 void stack_align_edx (void); 33 void stack_align_eax (void); 34 35 int 36 main (void) 37 { 38 standard (); 39 stack_align_ecx (); 40 stack_align_edx (); 41 stack_align_eax (); 42 gdb1253 (); 43 gdb1718 (); 44 gdb1338 (); 45 jump_at_beginning (); 46 return 0; 47 } 48 49 /* A normal prologue. */ 50 51 asm(".text\n" 52 " .align 8\n" 53 SYMBOL (standard) ":\n" 54 " pushl %ebp\n" 55 " movl %esp, %ebp\n" 56 " pushl %edi\n" 57 " int $0x03\n" 58 " leave\n" 59 " ret\n"); 60 61 /* Relevant part of the prologue from symtab/1253. */ 62 63 asm(".text\n" 64 " .align 8\n" 65 SYMBOL (gdb1253) ":\n" 66 " pushl %ebp\n" 67 " xorl %ecx, %ecx\n" 68 " movl %esp, %ebp\n" 69 " pushl %edi\n" 70 " int $0x03\n" 71 " leave\n" 72 " ret\n"); 73 74 /* Relevant part of the prologue from backtrace/1718. */ 75 76 asm(".text\n" 77 " .align 8\n" 78 SYMBOL (gdb1718) ":\n" 79 " pushl %ebp\n" 80 " movl $0x11111111, %eax\n" 81 " movl %esp, %ebp\n" 82 " pushl %esi\n" 83 " movl $0x22222222, %esi\n" 84 " pushl %ebx\n" 85 " int $0x03\n" 86 " leave\n" 87 " ret\n"); 88 89 /* Relevant part of the prologue from backtrace/1338. */ 90 91 asm(".text\n" 92 " .align 8\n" 93 SYMBOL (gdb1338) ":\n" 94 " pushl %edi\n" 95 " pushl %esi\n" 96 " pushl %ebx\n" 97 " int $0x03\n" 98 " popl %ebx\n" 99 " popl %esi\n" 100 " popl %edi\n" 101 " ret\n"); 102 103 /* The purpose of this function is to verify that, during prologue 104 skip, GDB does not follow a jump at the beginnning of the "real" 105 code. */ 106 107 asm(".text\n" 108 " .align 8\n" 109 SYMBOL (jump_at_beginning) ":\n" 110 " pushl %ebp\n" 111 " movl %esp,%ebp\n" 112 " jmp .gdbjump\n" 113 " nop\n" 114 ".gdbjump:\n" 115 " movl %ebp,%esp\n" 116 " popl %ebp\n" 117 " ret\n"); 118 119 asm(".text\n" 120 " .align 8\n" 121 SYMBOL (stack_align_ecx) ":\n" 122 " leal 4(%esp), %ecx\n" 123 " andl $-16, %esp\n" 124 " pushl -4(%ecx)\n" 125 " pushl %ebp\n" 126 " movl %esp, %ebp\n" 127 " pushl %edi\n" 128 " pushl %ecx\n" 129 " int $0x03\n" 130 " popl %ecx\n" 131 " popl %edi\n" 132 " popl %ebp\n" 133 " leal -4(%ecx), %esp\n" 134 " ret\n"); 135 136 asm(".text\n" 137 " .align 8\n" 138 SYMBOL (stack_align_edx) ":\n" 139 " leal 4(%esp), %edx\n" 140 " andl $-16, %esp\n" 141 " pushl -4(%edx)\n" 142 " pushl %ebp\n" 143 " movl %esp, %ebp\n" 144 " pushl %edi\n" 145 " pushl %ecx\n" 146 " int $0x03\n" 147 " popl %ecx\n" 148 " popl %edi\n" 149 " popl %ebp\n" 150 " leal -4(%edx), %esp\n" 151 " ret\n"); 152 153 asm(".text\n" 154 " .align 8\n" 155 SYMBOL (stack_align_eax) ":\n" 156 " leal 4(%esp), %eax\n" 157 " andl $-16, %esp\n" 158 " pushl -4(%eax)\n" 159 " pushl %ebp\n" 160 " movl %esp, %ebp\n" 161 " pushl %edi\n" 162 " pushl %ecx\n" 163 " int $0x03\n" 164 " popl %ecx\n" 165 " popl %edi\n" 166 " popl %ebp\n" 167 " leal -4(%eax), %esp\n" 168 " ret\n"); 169 170