forked from Minki/linux
5457982641
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
46 lines
2.0 KiB
C
46 lines
2.0 KiB
C
#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) */
|