1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2013-2020 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#ifdef SYMBOL_PREFIX
19#define SYMBOL(str)     SYMBOL_PREFIX #str
20#else
21#define SYMBOL(str)     #str
22#endif
23
24/* `set_point' further below is the label where we'll set tracepoints
25   at.  The insn at the label must the large enough to fit a fast
26   tracepoint jump.  */
27#if (defined __x86_64__ || defined __i386__)
28#  define NOP "   .byte 0xe9,0x00,0x00,0x00,0x00\n" /* jmp $+5 (5-byte nop) */
29#elif (defined __aarch64__)
30#  define NOP "    nop\n"
31#else
32#  define NOP "" /* port me */
33#endif
34
35int
36main(void)
37{
38  /* Note: 'volatile' is used to make sure the compiler doesn't
39     optimize out these variables.  We want to be sure instructions
40     are generated for accesses.  */
41  volatile int i = 0;
42
43  /* Generate a single line with a label in the middle where we can
44     place either a trap tracepoint or a fast tracepoint.  */
45#define LINE_WITH_FAST_TRACEPOINT					\
46  do {									\
47    i = 1;								\
48    asm ("    .global " SYMBOL (set_point) "\n"			\
49	 SYMBOL (set_point) ":\n"					\
50	 NOP								\
51    );									\
52    i = 2;								\
53 } while (0)
54
55  LINE_WITH_FAST_TRACEPOINT; /* location 1 */
56
57  return 0;
58}
59