/* $Id: psr.h,v 1.15 1997/10/04 08:54:22 ecd Exp $ * psr.h: This file holds the macros for masking off various parts of *        the processor status register on the Sparc. This is valid *        for Version 8. On the V9 this is renamed to the PSTATE *        register and its members are accessed as fields like *        PSTATE.PRIV for the current CPU privilege level. * * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu) */#ifndef __LINUX_SPARC_PSR_H#define __LINUX_SPARC_PSR_H/* The Sparc PSR fields are laid out as the following: * *  ------------------------------------------------------------------------ *  | impl  | vers  | icc   | resv  | EC | EF | PIL  | S | PS | ET |  CWP  | *  | 31-28 | 27-24 | 23-20 | 19-14 | 13 | 12 | 11-8 | 7 | 6  | 5  |  4-0  | *  ------------------------------------------------------------------------ */#define PSR_CWP     0x0000001f         /* current window pointer     */#define PSR_ET      0x00000020         /* enable traps field         */#define PSR_PS      0x00000040         /* previous privilege level   */#define PSR_S       0x00000080         /* current privilege level    */#define PSR_PIL     0x00000f00         /* processor interrupt level  */#define PSR_EF      0x00001000         /* enable floating point      */#define PSR_EC      0x00002000         /* enable co-processor        */#define PSR_LE      0x00008000         /* SuperSparcII little-endian */#define PSR_ICC     0x00f00000         /* integer condition codes    */#define PSR_C       0x00100000         /* carry bit                  */#define PSR_V       0x00200000         /* overflow bit               */#define PSR_Z       0x00400000         /* zero bit                   */#define PSR_N       0x00800000         /* negative bit               */#define PSR_VERS    0x0f000000         /* cpu-version field          */#define PSR_IMPL    0xf0000000         /* cpu-implementation field   */#ifdef __KERNEL__#ifndef __ASSEMBLY__/* Get the %psr register. */static inline unsigned int get_psr(void){	unsigned int psr;	__asm__ __volatile__(		"rd	%%psr, %0\n\t"		"nop\n\t"		"nop\n\t"		"nop\n\t"	: "=r" (psr)	: /* no inputs */	: "memory");	return psr;}static inline void put_psr(unsigned int new_psr){	__asm__ __volatile__(		"wr	%0, 0x0, %%psr\n\t"		"nop\n\t"		"nop\n\t"		"nop\n\t"	: /* no outputs */	: "r" (new_psr)	: "memory", "cc");}/* Get the %fsr register.  Be careful, make sure the floating point * enable bit is set in the %psr when you execute this or you will * incur a trap. */extern unsigned int fsr_storage;static inline unsigned int get_fsr(void){	unsigned int fsr = 0;	__asm__ __volatile__(		"st	%%fsr, %1\n\t"		"ld	%1, %0\n\t"	: "=r" (fsr)	: "m" (fsr_storage));	return fsr;}#endif /* !(__ASSEMBLY__) */#endif /* (__KERNEL__) */#endif /* !(__LINUX_SPARC_PSR_H) */