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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PARISC_SPECIAL_INSNS_H
3#define __PARISC_SPECIAL_INSNS_H
4
5#define lpa(va) ({ \
6 unsigned long pa; \
7 __asm__ __volatile__( \
8 "copy %%r0,%0\n\t" \
9 "lpa %%r0(%1),%0" \
10 : "=r" (pa) \
11 : "r" (va) \
12 : "memory" \
13 ); \
14 pa; \
15})
16
17#define lpa_user(va) ({ \
18 unsigned long pa; \
19 __asm__ __volatile__( \
20 "copy %%r0,%0\n\t" \
21 "lpa %%r0(%%sr3,%1),%0" \
22 : "=r" (pa) \
23 : "r" (va) \
24 : "memory" \
25 ); \
26 pa; \
27})
28
29#define mfctl(reg) ({ \
30 unsigned long cr; \
31 __asm__ __volatile__( \
32 "mfctl " #reg ",%0" : \
33 "=r" (cr) \
34 ); \
35 cr; \
36})
37
38#define mtctl(gr, cr) \
39 __asm__ __volatile__("mtctl %0,%1" \
40 : /* no outputs */ \
41 : "r" (gr), "i" (cr) : "memory")
42
43/* these are here to de-mystefy the calling code, and to provide hooks */
44/* which I needed for debugging EIEM problems -PB */
45#define get_eiem() mfctl(15)
46static inline void set_eiem(unsigned long val)
47{
48 mtctl(val, 15);
49}
50
51#define mfsp(reg) ({ \
52 unsigned long cr; \
53 __asm__ __volatile__( \
54 "mfsp " #reg ",%0" : \
55 "=r" (cr) \
56 ); \
57 cr; \
58})
59
60#define mtsp(val, cr) \
61 { if (__builtin_constant_p(val) && ((val) == 0)) \
62 __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
63 else \
64 __asm__ __volatile__("mtsp %0,%1" \
65 : /* no outputs */ \
66 : "r" (val), "i" (cr) : "memory"); }
67
68#endif /* __PARISC_SPECIAL_INSNS_H */