1/* Unwinder test program.
2
3   Copyright (C) 2003-2020 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
26void gdb1253 (void);
27void gdb1718 (void);
28void gdb1338 (void);
29void jump_at_beginning (void);
30void standard (void);
31void stack_align_ecx (void);
32void stack_align_edx (void);
33void stack_align_eax (void);
34
35int
36main (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
51asm(".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
63asm(".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
76asm(".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
91asm(".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
107asm(".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
119asm(".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
136asm(".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
153asm(".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