source: rtems/cpukit/score/cpu/sparc/sparc-counter-asm.S @ 2afb22b

5
Last change on this file since 2afb22b was 9460333e, checked in by Sebastian Huber <sebastian.huber@…>, on 06/20/16 at 08:08:39

sparc: Rework CPU counter support

Rework CPU counter support to enable use of the GR740 up-counter via
%asr22 and %asr23.
  • Property mode set to 100644
File size: 716 bytes
Line 
1/*
2 * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
3 *
4 *  embedded brains GmbH
5 *  Dornierstr. 4
6 *  82178 Puchheim
7 *  Germany
8 *  <rtems@embedded-brains.de>
9 *
10 * The license and distribution terms for this file may be
11 * found in the file LICENSE in this distribution or at
12 * http://www.rtems.org/license/LICENSE.
13 */
14
15#if HAVE_CONFIG_H
16#include "config.h"
17#endif
18
19#include <rtems/asm.h>
20
21        .section        ".text"
22        .align  4
23
24        PUBLIC(_SPARC_Counter_read_address)
25SYM(_SPARC_Counter_read_address):
26        sethi   %hi(_SPARC_Counter + 8), %o0
27        ld      [%o0 + %lo(_SPARC_Counter + 8)], %o0
28        jmp     %o7 + 8
29         ld     [%o0], %o0
30
31        PUBLIC(_SPARC_Counter_read_asr23)
32SYM(_SPARC_Counter_read_asr23):
33        jmp     %o7 + 8
34         mov    %asr23, %o0
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