psrcompat.h (2070B)
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2#ifndef _SPARC64_PSRCOMPAT_H 3#define _SPARC64_PSRCOMPAT_H 4 5#include <asm/pstate.h> 6 7/* Old 32-bit PSR fields for the compatibility conversion code. */ 8#define PSR_CWP 0x0000001f /* current window pointer */ 9#define PSR_ET 0x00000020 /* enable traps field */ 10#define PSR_PS 0x00000040 /* previous privilege level */ 11#define PSR_S 0x00000080 /* current privilege level */ 12#define PSR_PIL 0x00000f00 /* processor interrupt level */ 13#define PSR_EF 0x00001000 /* enable floating point */ 14#define PSR_EC 0x00002000 /* enable co-processor */ 15#define PSR_SYSCALL 0x00004000 /* inside of a syscall */ 16#define PSR_LE 0x00008000 /* SuperSparcII little-endian */ 17#define PSR_ICC 0x00f00000 /* integer condition codes */ 18#define PSR_C 0x00100000 /* carry bit */ 19#define PSR_V 0x00200000 /* overflow bit */ 20#define PSR_Z 0x00400000 /* zero bit */ 21#define PSR_N 0x00800000 /* negative bit */ 22#define PSR_VERS 0x0f000000 /* cpu-version field */ 23#define PSR_IMPL 0xf0000000 /* cpu-implementation field */ 24 25#define PSR_V8PLUS 0xff000000 /* fake impl/ver, meaning a 64bit CPU is present */ 26#define PSR_XCC 0x000f0000 /* if PSR_V8PLUS, this is %xcc */ 27 28static inline unsigned int tstate_to_psr(unsigned long tstate) 29{ 30 return ((tstate & TSTATE_CWP) | 31 PSR_S | 32 ((tstate & TSTATE_ICC) >> 12) | 33 ((tstate & TSTATE_XCC) >> 20) | 34 ((tstate & TSTATE_SYSCALL) ? PSR_SYSCALL : 0) | 35 PSR_V8PLUS); 36} 37 38static inline unsigned long psr_to_tstate_icc(unsigned int psr) 39{ 40 unsigned long tstate = ((unsigned long)(psr & PSR_ICC)) << 12; 41 if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) 42 tstate |= ((unsigned long)(psr & PSR_XCC)) << 20; 43 return tstate; 44} 45 46#endif /* !(_SPARC64_PSRCOMPAT_H) */