source: trunk/libs/newlib/src/libgloss/sparc_leon/asm-leon/contextswitch.h @ 444

Last change on this file since 444 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 1.9 KB
Line 
1/*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26#ifndef H_LEONBARE_CONTEXTSWITCH_H
27#define H_LEONBARE_CONTEXTSWITCH_H
28
29
30/*
31 * for this version, the index of THREAD_JB_SP must be even !!!
32 * This way, we can speed up the context switch (using std).
33 */
34#define THREAD_JB_SP     0      /* aligned */
35#define THREAD_JB_PC     1
36#define THREAD_JB_SVMASK 3
37#define THREAD_JB_MASK   4
38#define THREAD_JB_FP     5
39#define THREAD_JB_I7     6
40
41#define THREAD_JB_PSR    8      /* aligned */
42#define THREAD_JB_WIM    9
43
44#define THREAD_JB_FPUCTX 10
45
46#ifndef __ASSEMBLER__
47
48extern unsigned long fpustate_current;
49
50typedef int threadctx_t[14 + 2] __attribute__ ((aligned (8)));
51
52int thread_setjmp (threadctx_t env, int val);
53void thread_longjmp (threadctx_t env, int val);
54void _switch_to (threadctx_t env, int val);
55
56#endif /* __ASSEMBLER__ */
57
58#endif
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