| /* Test program for byte registers. |
| |
| Copyright 2010-2021 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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/>. */ |
| |
| #include <stdio.h> |
| |
| int data[] = { |
| 0x14131211, |
| 0x24232221, |
| 0x34333231, |
| 0x44434241, |
| }; |
| |
| int |
| main (int argc, char **argv) |
| { |
| register int eax asm ("eax"); |
| register int ebx asm ("ebx"); |
| register int ecx asm ("ecx"); |
| register int edx asm ("edx"); |
| |
| asm ("mov 0(%0), %%eax\n\t" |
| "mov 4(%0), %%ebx\n\t" |
| "mov 8(%0), %%ecx\n\t" |
| "mov 12(%0), %%edx\n\t" |
| : /* no output operands */ |
| : "r" (data) |
| : "eax", "ebx", "ecx", "edx"); |
| |
| asm ("nop" /* first breakpoint here */ |
| /* i386-{byte,word}.exp write eax-edx here. |
| Tell gcc/clang they're live. */ |
| : "=r" (eax), "=r" (ebx), "=r" (ecx), "=r" (edx) |
| : /* no inputs */); |
| |
| asm ("mov %%eax, 0(%0)\n\t" |
| "mov %%ebx, 4(%0)\n\t" |
| "mov %%ecx, 8(%0)\n\t" |
| "mov %%edx, 12(%0)\n\t" |
| : /* no output operands */ |
| : "r" (data), |
| /* Mark these as inputs so that gcc/clang won't try to use them as |
| a temp to build %0. */ |
| "r" (eax), "r" (ebx), "r" (ecx), "r" (edx)); |
| puts ("Bye!"); /* second breakpoint here */ |
| |
| return 0; |
| } |