aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-cris/arch-v10/system.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/arch-v10/system.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-cris/arch-v10/system.h')
-rw-r--r--include/asm-cris/arch-v10/system.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v10/system.h b/include/asm-cris/arch-v10/system.h
new file mode 100644
index 000000000000..781ca30229a8
--- /dev/null
+++ b/include/asm-cris/arch-v10/system.h
@@ -0,0 +1,62 @@
1#ifndef __ASM_CRIS_ARCH_SYSTEM_H
2#define __ASM_CRIS_ARCH_SYSTEM_H
3
4#include <linux/config.h>
5
6/* read the CPU version register */
7
8extern inline unsigned long rdvr(void) {
9 unsigned char vr;
10 __asm__ volatile ("move $vr,%0" : "=rm" (vr));
11 return vr;
12}
13
14/* read/write the user-mode stackpointer */
15
16extern inline unsigned long rdusp(void) {
17 unsigned long usp;
18 __asm__ __volatile__("move $usp,%0" : "=rm" (usp));
19 return usp;
20}
21
22#define wrusp(usp) \
23 __asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp))
24
25/* read the current stackpointer */
26
27extern inline unsigned long rdsp(void) {
28 unsigned long sp;
29 __asm__ __volatile__("move.d $sp,%0" : "=rm" (sp));
30 return sp;
31}
32
33extern inline unsigned long _get_base(char * addr)
34{
35 return 0;
36}
37
38#define nop() __asm__ __volatile__ ("nop");
39
40#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
41#define tas(ptr) (xchg((ptr),1))
42
43struct __xchg_dummy { unsigned long a[100]; };
44#define __xg(x) ((struct __xchg_dummy *)(x))
45
46/* interrupt control.. */
47#define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory");
48#define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory");
49#define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory");
50#define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory");
51
52#define irqs_disabled() \
53({ \
54 unsigned long flags; \
55 local_save_flags(flags); \
56 !(flags & (1<<5)); \
57})
58
59/* For spinlocks etc */
60#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory");
61
62#endif