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1ba53b71 L |
1 | /* Test program for byte registers. |
2 | ||
b811d2c2 | 3 | Copyright 2010-2020 Free Software Foundation, Inc. |
1ba53b71 L |
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 | #include <stdio.h> | |
21 | ||
22 | int data[] = { | |
23 | 0x14131211, | |
24 | 0x24232221, | |
25 | 0x34333231, | |
26 | 0x44434241, | |
27 | }; | |
28 | ||
29 | int | |
30 | main (int argc, char **argv) | |
31 | { | |
fb0576e9 DE |
32 | register int eax asm ("eax"); |
33 | register int ebx asm ("ebx"); | |
34 | register int ecx asm ("ecx"); | |
35 | register int edx asm ("edx"); | |
36 | ||
1ba53b71 L |
37 | asm ("mov 0(%0), %%eax\n\t" |
38 | "mov 4(%0), %%ebx\n\t" | |
39 | "mov 8(%0), %%ecx\n\t" | |
40 | "mov 12(%0), %%edx\n\t" | |
41 | : /* no output operands */ | |
42 | : "r" (data) | |
43 | : "eax", "ebx", "ecx", "edx"); | |
fb0576e9 DE |
44 | |
45 | asm ("nop" /* first breakpoint here */ | |
46 | /* i386-{byte,word}.exp write eax-edx here. | |
47 | Tell gcc/clang they're live. */ | |
48 | : "=r" (eax), "=r" (ebx), "=r" (ecx), "=r" (edx) | |
49 | : /* no inputs */); | |
1ba53b71 L |
50 | |
51 | asm ("mov %%eax, 0(%0)\n\t" | |
52 | "mov %%ebx, 4(%0)\n\t" | |
53 | "mov %%ecx, 8(%0)\n\t" | |
54 | "mov %%edx, 12(%0)\n\t" | |
55 | : /* no output operands */ | |
fb0576e9 DE |
56 | : "r" (data), |
57 | /* Mark these as inputs so that gcc/clang won't try to use them as | |
58 | a temp to build %0. */ | |
59 | "r" (eax), "r" (ebx), "r" (ecx), "r" (edx)); | |
1ba53b71 L |
60 | puts ("Bye!"); /* second breakpoint here */ |
61 | ||
62 | return 0; | |
63 | } |