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/usr/sparc64-linux-gnu/include/asm/psrcompat.h is in linux-libc-dev-sparc64-cross 4.9.25-1cross1.

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#ifndef _SPARC64_PSRCOMPAT_H
#define _SPARC64_PSRCOMPAT_H

#include <asm/pstate.h>

/* Old 32-bit PSR fields for the compatibility conversion code. */
#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_SYSCALL 0x00004000         /* inside of a syscall        */
#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   */

#define PSR_V8PLUS  0xff000000         /* fake impl/ver, meaning a 64bit CPU is present */
#define PSR_XCC	    0x000f0000         /* if PSR_V8PLUS, this is %xcc */

static __inline__ unsigned int tstate_to_psr(unsigned long tstate)
{
	return ((tstate & TSTATE_CWP)			|
		PSR_S					|
		((tstate & TSTATE_ICC) >> 12)		|
		((tstate & TSTATE_XCC) >> 20)		|
		((tstate & TSTATE_SYSCALL) ? PSR_SYSCALL : 0) |
		PSR_V8PLUS);
}

static __inline__ unsigned long psr_to_tstate_icc(unsigned int psr)
{
	unsigned long tstate = ((unsigned long)(psr & PSR_ICC)) << 12;
	if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS)
		tstate |= ((unsigned long)(psr & PSR_XCC)) << 20;
	return tstate;
}

#endif /* !(_SPARC64_PSRCOMPAT_H) */