xref: /linux/arch/sparc/include/uapi/asm/psr.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  * psr.h: This file holds the macros for masking off various parts of
4  *        the processor status register on the Sparc. This is valid
5  *        for Version 8. On the V9 this is renamed to the PSTATE
6  *        register and its members are accessed as fields like
7  *        PSTATE.PRIV for the current CPU privilege level.
8  *
9  * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu)
10  */
11 
12 #ifndef _UAPI__LINUX_SPARC_PSR_H
13 #define _UAPI__LINUX_SPARC_PSR_H
14 
15 /* The Sparc PSR fields are laid out as the following:
16  *
17  *  ------------------------------------------------------------------------
18  *  | impl  | vers  | icc   | resv  | EC | EF | PIL  | S | PS | ET |  CWP  |
19  *  | 31-28 | 27-24 | 23-20 | 19-14 | 13 | 12 | 11-8 | 7 | 6  | 5  |  4-0  |
20  *  ------------------------------------------------------------------------
21  */
22 #define PSR_CWP     0x0000001f         /* current window pointer     */
23 #define PSR_ET      0x00000020         /* enable traps field         */
24 #define PSR_PS      0x00000040         /* previous privilege level   */
25 #define PSR_S       0x00000080         /* current privilege level    */
26 #define PSR_PIL     0x00000f00         /* processor interrupt level  */
27 #define PSR_EF      0x00001000         /* enable floating point      */
28 #define PSR_EC      0x00002000         /* enable co-processor        */
29 #define PSR_SYSCALL 0x00004000         /* inside of a syscall        */
30 #define PSR_LE      0x00008000         /* SuperSparcII little-endian */
31 #define PSR_ICC     0x00f00000         /* integer condition codes    */
32 #define PSR_C       0x00100000         /* carry bit                  */
33 #define PSR_V       0x00200000         /* overflow bit               */
34 #define PSR_Z       0x00400000         /* zero bit                   */
35 #define PSR_N       0x00800000         /* negative bit               */
36 #define PSR_VERS    0x0f000000         /* cpu-version field          */
37 #define PSR_IMPL    0xf0000000         /* cpu-implementation field   */
38 
39 #define PSR_VERS_SHIFT		24
40 #define PSR_IMPL_SHIFT		28
41 #define PSR_VERS_SHIFTED_MASK	0xf
42 #define PSR_IMPL_SHIFTED_MASK	0xf
43 
44 #define PSR_IMPL_TI		0x4
45 #define PSR_IMPL_LEON		0xf
46 
47 
48 #endif /* _UAPI__LINUX_SPARC_PSR_H */
49