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1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright 2013-2020 Free Software Foundation, Inc. |
bc5065a7 PA |
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) */ | |
7041adf4 PL |
29 | #elif (defined __aarch64__) |
30 | # define NOP " nop\n" | |
bc5065a7 PA |
31 | #else |
32 | # define NOP "" /* port me */ | |
33 | #endif | |
34 | ||
35 | int | |
36 | main(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 | } |