1 /* Unwinder test program.
2 
3    Copyright 2003, 2004 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 2 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, write to the Free Software
19    Foundation, Inc., 59 Temple Place - Suite 330,
20    Boston, MA 02111-1307, USA.  */
21 
22 #ifdef SYMBOL_PREFIX
23 #define SYMBOL(str)	SYMBOL_PREFIX #str
24 #else
25 #define SYMBOL(str)	#str
26 #endif
27 
28 void gdb1253 (void);
29 void gdb1718 (void);
30 void gdb1338 (void);
31 void jump_at_beginning (void);
32 
33 int
34 main (void)
35 {
36   standard ();
37   gdb1253 ();
38   gdb1718 ();
39   gdb1338 ();
40   jump_at_beginning ();
41   return 0;
42 }
43 
44 /* A normal prologue.  */
45 
46 asm(".text\n"
47     "    .align 8\n"
48     SYMBOL (standard) ":\n"
49     "    pushl %ebp\n"
50     "    movl  %esp, %ebp\n"
51     "    pushl %edi\n"
52     "    int   $0x03\n"
53     "    leave\n"
54     "    ret\n");
55 
56 /* Relevant part of the prologue from symtab/1253.  */
57 
58 asm(".text\n"
59     "    .align 8\n"
60     SYMBOL (gdb1253) ":\n"
61     "    pushl %ebp\n"
62     "    xorl  %ecx, %ecx\n"
63     "    movl  %esp, %ebp\n"
64     "    pushl %edi\n"
65     "    int   $0x03\n"
66     "    leave\n"
67     "    ret\n");
68 
69 /* Relevant part of the prologue from backtrace/1718.  */
70 
71 asm(".text\n"
72     "    .align 8\n"
73     SYMBOL (gdb1718) ":\n"
74     "    pushl %ebp\n"
75     "    movl  $0x11111111, %eax\n"
76     "    movl  %esp, %ebp\n"
77     "    pushl %esi\n"
78     "    movl  $0x22222222, %esi\n"
79     "    pushl %ebx\n"
80     "    int   $0x03\n"
81     "    leave\n"
82     "    ret\n");
83 
84 /* Relevant part of the prologue from backtrace/1338.  */
85 
86 asm(".text\n"
87     "    .align 8\n"
88     SYMBOL (gdb1338) ":\n"
89     "    pushl %edi\n"
90     "    pushl %esi\n"
91     "    pushl %ebx\n"
92     "    int   $0x03\n"
93     "    popl  %ebx\n"
94     "    popl  %esi\n"
95     "    popl  %edi\n"
96     "    ret\n");
97 
98 /* The purpose of this function is to verify that, during prologue
99    skip, GDB does not follow a jump at the beginnning of the "real"
100    code.  */
101 
102 asm(".text\n"
103     "    .align 8\n"
104     SYMBOL (jump_at_beginning) ":\n"
105     "    pushl %ebp\n"
106     "    movl  %esp,%ebp\n"
107     "    jmp   .gdbjump\n"
108     "    nop\n"
109     ".gdbjump:\n"
110     "    movl  %ebp,%esp\n"
111     "    popl  %ebp\n"
112     "    ret\n");
113