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7ca18ed6 EBM |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2018-2020 Free Software Foundation, Inc. |
7ca18ed6 EBM |
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 | int main (void) | |
19 | { | |
20 | /* Set Load Stream Disable bit in DSCR. */ | |
21 | unsigned long dscr = 0x20; | |
22 | ||
23 | /* This is the non-privileged SPR number to access DSCR, | |
24 | available since isa 207. */ | |
25 | asm volatile ("mtspr 3,%0" : : "r" (dscr)); | |
26 | ||
27 | /* Set PPR to low priority (010 in bits 11:13, or | |
28 | 0x0008000000000000). */ | |
29 | asm volatile ("or 1,1,1"); | |
30 | asm volatile ("nop"); // marker | |
31 | asm volatile ("nop"); | |
32 | ||
33 | return 0; | |
34 | } |