| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2013-2018 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifdef SYMBOL_PREFIX |
| #define SYMBOL(str) SYMBOL_PREFIX #str |
| #else |
| #define SYMBOL(str) #str |
| #endif |
| |
| /* `set_point' further below is the label where we'll set tracepoints |
| at. The insn at the label must the large enough to fit a fast |
| tracepoint jump. */ |
| #if (defined __x86_64__ || defined __i386__) |
| # define NOP " .byte 0xe9,0x00,0x00,0x00,0x00\n" /* jmp $+5 (5-byte nop) */ |
| #elif (defined __aarch64__) |
| # define NOP " nop\n" |
| #else |
| # define NOP "" /* port me */ |
| #endif |
| |
| int |
| main(void) |
| { |
| /* Note: 'volatile' is used to make sure the compiler doesn't |
| optimize out these variables. We want to be sure instructions |
| are generated for accesses. */ |
| volatile int i = 0; |
| |
| /* Generate a single line with a label in the middle where we can |
| place either a trap tracepoint or a fast tracepoint. */ |
| #define LINE_WITH_FAST_TRACEPOINT \ |
| do { \ |
| i = 1; \ |
| asm (" .global " SYMBOL (set_point) "\n" \ |
| SYMBOL (set_point) ":\n" \ |
| NOP \ |
| ); \ |
| i = 2; \ |
| } while (0) |
| |
| LINE_WITH_FAST_TRACEPOINT; /* location 1 */ |
| |
| return 0; |
| } |