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psr.h
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1 /*
2  * psr.h: This file holds the macros for masking off various parts of
3  * the processor status register on the Sparc. This is valid
4  * for Version 8. On the V9 this is renamed to the PSTATE
5  * register and its members are accessed as fields like
6  * PSTATE.PRIV for the current CPU privilege level.
7  *
8  * Copyright (C) 1994 David S. Miller ([email protected])
9  */
10 
11 #ifndef _UAPI__LINUX_SPARC_PSR_H
12 #define _UAPI__LINUX_SPARC_PSR_H
13 
14 /* The Sparc PSR fields are laid out as the following:
15  *
16  * ------------------------------------------------------------------------
17  * | impl | vers | icc | resv | EC | EF | PIL | S | PS | ET | CWP |
18  * | 31-28 | 27-24 | 23-20 | 19-14 | 13 | 12 | 11-8 | 7 | 6 | 5 | 4-0 |
19  * ------------------------------------------------------------------------
20  */
21 #define PSR_CWP 0x0000001f /* current window pointer */
22 #define PSR_ET 0x00000020 /* enable traps field */
23 #define PSR_PS 0x00000040 /* previous privilege level */
24 #define PSR_S 0x00000080 /* current privilege level */
25 #define PSR_PIL 0x00000f00 /* processor interrupt level */
26 #define PSR_EF 0x00001000 /* enable floating point */
27 #define PSR_EC 0x00002000 /* enable co-processor */
28 #define PSR_SYSCALL 0x00004000 /* inside of a syscall */
29 #define PSR_LE 0x00008000 /* SuperSparcII little-endian */
30 #define PSR_ICC 0x00f00000 /* integer condition codes */
31 #define PSR_C 0x00100000 /* carry bit */
32 #define PSR_V 0x00200000 /* overflow bit */
33 #define PSR_Z 0x00400000 /* zero bit */
34 #define PSR_N 0x00800000 /* negative bit */
35 #define PSR_VERS 0x0f000000 /* cpu-version field */
36 #define PSR_IMPL 0xf0000000 /* cpu-implementation field */
37 
38 #define PSR_VERS_SHIFT 24
39 #define PSR_IMPL_SHIFT 28
40 #define PSR_VERS_SHIFTED_MASK 0xf
41 #define PSR_IMPL_SHIFTED_MASK 0xf
42 
43 #define PSR_IMPL_TI 0x4
44 #define PSR_IMPL_LEON 0xf
45 
46 
47 #endif /* _UAPI__LINUX_SPARC_PSR_H */