LXR linux-old/include/asm-sparc64/psrcompat.h

   1/* $Id: psrcompat.h,v 1.5 1998/10/06 09:28:39 jj Exp $ */
   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 compatability 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_LE      0x00008000         /* SuperSparcII little-endian */
  16#define PSR_ICC     0x00f00000         /* integer condition codes    */
  17#define PSR_C       0x00100000         /* carry bit                  */
  18#define PSR_V       0x00200000         /* overflow bit               */
  19#define PSR_Z       0x00400000         /* zero bit                   */
  20#define PSR_N       0x00800000         /* negative bit               */
  21#define PSR_VERS    0x0f000000         /* cpu-version field          */
  22#define PSR_IMPL    0xf0000000         /* cpu-implementation field   */
  23
  24#define PSR_V8PLUS  0xff000000         /* fake impl/ver, meaning a 64bit CPU is present */
  25#define PSR_XCC     0x000f0000         /* if PSR_V8PLUS, this is %xcc */
  26
  27extern inline unsigned int tstate_to_psr(unsigned long tstate)
  28{
  29        return ((tstate & TSTATE_CWP)                   |
  30                PSR_S                                   |
  31                ((tstate & TSTATE_ICC) >> 12)           |
  32                ((tstate & TSTATE_XCC) >> 20)           |
  33                PSR_V8PLUS);
  34}
  35
  36extern inline unsigned long psr_to_tstate_icc(unsigned int psr)
  37{
  38        unsigned long tstate = ((unsigned long)(psr & PSR_ICC)) << 12;
  39        if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS)
  40                tstate |= ((unsigned long)(psr & PSR_XCC)) << 20;
  41        return tstate;
  42}
  43
  44#endif /* !(_SPARC64_PSRCOMPAT_H) */
  45