uapi/asm/psr.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 /*
0003  * psr.h: This file holds the macros for masking off various parts of
0004  *        the processor status register on the Sparc. This is valid
0005  *        for Version 8. On the V9 this is renamed to the PSTATE
0006  *        register and its members are accessed as fields like
0007  *        PSTATE.PRIV for the current CPU privilege level.
0008  *
0009  * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu)
0010  */
0011
0012 #ifndef _UAPI__LINUX_SPARC_PSR_H
0013 #define _UAPI__LINUX_SPARC_PSR_H
0014
0015 /* The Sparc PSR fields are laid out as the following:
0016  *
0017  *  ------------------------------------------------------------------------
0018  *  | impl  | vers  | icc   | resv  | EC | EF | PIL  | S | PS | ET |  CWP  |
0019  *  | 31-28 | 27-24 | 23-20 | 19-14 | 13 | 12 | 11-8 | 7 | 6  | 5  |  4-0  |
0020  *  ------------------------------------------------------------------------
0021  */
0022 #define PSR_CWP     0x0000001f         /* current window pointer     */
0023 #define PSR_ET      0x00000020         /* enable traps field         */
0024 #define PSR_PS      0x00000040         /* previous privilege level   */
0025 #define PSR_S       0x00000080         /* current privilege level    */
0026 #define PSR_PIL     0x00000f00         /* processor interrupt level  */
0027 #define PSR_EF      0x00001000         /* enable floating point      */
0028 #define PSR_EC      0x00002000         /* enable co-processor        */
0029 #define PSR_SYSCALL 0x00004000         /* inside of a syscall        */
0030 #define PSR_LE      0x00008000         /* SuperSparcII little-endian */
0031 #define PSR_ICC     0x00f00000         /* integer condition codes    */
0032 #define PSR_C       0x00100000         /* carry bit                  */
0033 #define PSR_V       0x00200000         /* overflow bit               */
0034 #define PSR_Z       0x00400000         /* zero bit                   */
0035 #define PSR_N       0x00800000         /* negative bit               */
0036 #define PSR_VERS    0x0f000000         /* cpu-version field          */
0037 #define PSR_IMPL    0xf0000000         /* cpu-implementation field   */
0038
0039 #define PSR_VERS_SHIFT      24
0040 #define PSR_IMPL_SHIFT      28
0041 #define PSR_VERS_SHIFTED_MASK   0xf
0042 #define PSR_IMPL_SHIFTED_MASK   0xf
0043
0044 #define PSR_IMPL_TI     0x4
0045 #define PSR_IMPL_LEON       0xf
0046
0047
0048 #endif /* _UAPI__LINUX_SPARC_PSR_H */