/* $NetBSD: psl.h,v 1.65 2024/04/07 17:08:00 rillig Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)psl.h 8.1 (Berkeley) 6/11/93
*/
#ifndef PSR_IMPL
/*
* SPARC Process Status Register (in psl.h for hysterical raisins). This
* doesn't exist on the V9.
*
* The picture in the Sun manuals looks like this:
* 1 1
* 31 28 27 24 23 20 19 14 3 2 11 8 7 6 5 4 0
* +-------+-------+-------+-----------+-+-+-------+-+-+-+---------+
* | impl | ver | icc | reserved |E|E| pil |S|P|E| CWP |
* | | |n z v c| |C|F| | |S|T| |
* +-------+-------+-------+-----------+-+-+-------+-+-+-+---------+
*/
#define PSR_IMPL 0xf0000000 /* implementation */
#define PSR_VER 0x0f000000 /* version */
#define PSR_ICC 0x00f00000 /* integer condition codes */
#define PSR_N 0x00800000 /* negative */
#define PSR_Z 0x00400000 /* zero */
#define PSR_O 0x00200000 /* overflow */
#define PSR_C 0x00100000 /* carry */
#define PSR_EC 0x00002000 /* coprocessor enable */
#define PSR_EF 0x00001000 /* FP enable */
#define PSR_PIL 0x00000f00 /* interrupt level */
#define PSR_S 0x00000080 /* supervisor (kernel) mode */
#define PSR_PS 0x00000040 /* previous supervisor mode (traps) */
#define PSR_ET 0x00000020 /* trap enable */
#define PSR_CWP 0x0000001f /* current window pointer */
#define PSR_BITS "\20\16EC\15EF\10S\7PS\6ET"
/* Interesting spl()s */
#define PIL_BIO 5
#define PIL_VIDEO 5
#define PIL_TTY 6
#define PIL_LPT 6
#define PIL_NET 6
#define PIL_VM 7
#define PIL_AUD 8
#define PIL_CLOCK 10
#define PIL_FD 11
#define PIL_SER 12
#define PIL_STATCLOCK 14
#define PIL_HIGH 15
#define PIL_SCHED PIL_CLOCK
#define PIL_LOCK PIL_HIGH
/*
* SPARC V9 CCR register
*/
#define ICC_C 0x01L
#define ICC_V 0x02L
#define ICC_Z 0x04L
#define ICC_N 0x08L
#define XCC_SHIFT 4
#define XCC_C (ICC_C<<XCC_SHIFT)
#define XCC_V (ICC_V<<XCC_SHIFT)
#define XCC_Z (ICC_Z<<XCC_SHIFT)
#define XCC_N (ICC_N<<XCC_SHIFT)
/*
* SPARC V9 PSTATE register (what replaces the PSR in V9)
*
* Here's the layout:
*
* 11 10 9 8 7 6 5 4 3 2 1 0
* +------------------------------------------------------------+
* | IG | MG | CLE | TLE | MM | RED | PEF | AM | PRIV | IE | AG |
* +------------------------------------------------------------+
*/
#define PSTATE_IG 0x800 /* enable spitfire interrupt globals */
#define PSTATE_MG 0x400 /* enable spitfire MMU globals */
#define PSTATE_CLE 0x200 /* current little endian */
#define PSTATE_TLE 0x100 /* traps little endian */
#define PSTATE_MM 0x0c0 /* memory model */
#define PSTATE_MM_TSO 0x000 /* total store order */
#define PSTATE_MM_PSO 0x040 /* partial store order */
#define PSTATE_MM_RMO 0x080 /* Relaxed memory order */
#define PSTATE_RED 0x020 /* RED state */
#define PSTATE_PEF 0x010 /* enable floating point */
#define PSTATE_AM 0x008 /* 32-bit address masking */
#define PSTATE_PRIV 0x004 /* privileged mode */
#define PSTATE_IE 0x002 /* interrupt enable */
#define PSTATE_AG 0x001 /* enable alternate globals */
#define PSTATE_BITS "\177\020" \
"b\013IG\0" "b\012MG\0" "b\011CLE\0" "b\010TLE\0" \
"F\006\002\0" ":\000MM_TSO\0" ":\001MM_PSO\0" \
":\002MM_RMO\0" "*?\0" "b\005RED\0" "b\004PEF\0" \
"b\003AM\0" "b\002PRIV\0" "b\001IE\0" "b\000AG\0"
/*
* 32-bit code requires TSO or at best PSO since that's what's supported on
* SPARC V8 and earlier machines.
*
* 64-bit code sets the memory model in the ELF header.
*
* We're running kernel code in TSO for the moment so we don't need to worry
* about possible memory barrier bugs.
*/
#ifdef __arch64__
#define PSTATE_PROM (PSTATE_MM_TSO|PSTATE_PRIV)
#define PSTATE_NUCLEUS (PSTATE_MM_TSO|PSTATE_PRIV|PSTATE_AG)
#define PSTATE_KERN (PSTATE_MM_TSO|PSTATE_PRIV)
#define PSTATE_INTR (PSTATE_KERN|PSTATE_IE)
#define PSTATE_USER32 (PSTATE_MM_TSO|PSTATE_AM|PSTATE_IE)
#define PSTATE_USER (PSTATE_MM_RMO|PSTATE_IE)
#else
#define PSTATE_PROM (PSTATE_MM_TSO|PSTATE_PRIV)
#define PSTATE_NUCLEUS (PSTATE_MM_TSO|PSTATE_AM|PSTATE_PRIV|PSTATE_AG)
#define PSTATE_KERN (PSTATE_MM_TSO|PSTATE_AM|PSTATE_PRIV)
#define PSTATE_INTR (PSTATE_KERN|PSTATE_IE)
#define PSTATE_USER32 (PSTATE_MM_TSO|PSTATE_AM|PSTATE_IE)
#define PSTATE_USER (PSTATE_MM_TSO|PSTATE_AM|PSTATE_IE)
#endif
/*
* SPARC V9 TSTATE register
*
* 39 32 31 24 23 20 19 8 7 5 4 0
* +-----+-----+-----+--------+---+-----+
* | CCR | ASI | - | PSTATE | - | CWP |
* +-----+-----+-----+--------+---+-----+
*/
#define TSTATE_CWP 0x01f
#define TSTATE_PSTATE 0xfff00
#define TSTATE_PSTATE_SHIFT 8
#define TSTATE_ASI 0xff000000LL
#define TSTATE_ASI_SHIFT 24
#define TSTATE_CCR 0xff00000000LL
#define TSTATE_CCR_SHIFT 32
#define PSRCC_TO_TSTATE(x) (((int64_t)(x)&PSR_ICC)<<(TSTATE_CCR_SHIFT-20))
#define TSTATECCR_TO_PSR(x) (((x)&TSTATE_CCR)>>(TSTATE_CCR_SHIFT-20))
/*
* These are here to simplify life.
*/
#define TSTATE_IG (PSTATE_IG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MG (PSTATE_MG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_CLE (PSTATE_CLE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_TLE (PSTATE_TLE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM (PSTATE_MM<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_TSO (PSTATE_MM_TSO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_PSO (PSTATE_MM_PSO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_MM_RMO (PSTATE_MM_RMO<<TSTATE_PSTATE_SHIFT)
#define TSTATE_RED (PSTATE_RED<<TSTATE_PSTATE_SHIFT)
#define TSTATE_PEF (PSTATE_PEF<<TSTATE_PSTATE_SHIFT)
#define TSTATE_AM (PSTATE_AM<<TSTATE_PSTATE_SHIFT)
#define TSTATE_PRIV (PSTATE_PRIV<<TSTATE_PSTATE_SHIFT)
#define TSTATE_IE (PSTATE_IE<<TSTATE_PSTATE_SHIFT)
#define TSTATE_AG (PSTATE_AG<<TSTATE_PSTATE_SHIFT)
#define TSTATE_BITS "\20\14IG\13MG\12CLE\11TLE\10\7MM\6RED\5PEF\4AM\3PRIV\2IE\1AG"
#define TSTATE_KERN ((PSTATE_KERN)<<TSTATE_PSTATE_SHIFT)
#define TSTATE_USER ((PSTATE_USER)<<TSTATE_PSTATE_SHIFT)
/*
* SPARC V9 VER version register.
*
* 63 48 47 32 31 24 23 16 15 8 7 5 4 0
* +-------+------+------+-----+-------+---+--------+
* | manuf | impl | mask | - | maxtl | - | maxwin |
* +-------+------+------+-----+-------+---+--------+
*
*/
#define VER_MANUF 0xffff000000000000LL
#define VER_MANUF_SHIFT 48
#define VER_IMPL 0x0000ffff00000000LL
#define VER_IMPL_SHIFT 32
#define VER_MASK 0x00000000ff000000LL
#define VER_MASK_SHIFT 24
#define VER_MAXTL 0x000000000000ff00LL
#define VER_MAXTL_SHIFT 8
#define VER_MAXWIN 0x000000000000001fLL
#define MANUF_FUJITSU 0x04 /* Fujitsu SPARC64 */
#define MANUF_SUN 0x17 /* Sun UltraSPARC */
#define IMPL_SPARC64 0x01 /* SPARC64 */
#define IMPL_SPARC64_II 0x02 /* SPARC64-II */
#define IMPL_SPARC64_III 0x03 /* SPARC64-III */
#define IMPL_SPARC64_IV 0x04 /* SPARC64-IV */
#define IMPL_ZEUS 0x05 /* SPARC64-V */
#define IMPL_OLYMPUS_C 0x06 /* SPARC64-VI */
#define IMPL_JUPITER 0x07 /* SPARC64-VII */
#define IMPL_SPITFIRE 0x10 /* UltraSPARC-I */
#define IMPL_BLACKBIRD 0x11 /* UltraSPARC-II */
#define IMPL_SABRE 0x12 /* UltraSPARC-IIi */
#define IMPL_HUMMINGBIRD 0x13 /* UltraSPARC-IIe */
#define IMPL_CHEETAH 0x14 /* UltraSPARC-III */
#define IMPL_CHEETAH_PLUS 0x15 /* UltraSPARC-III+ */
#define IMPL_JALAPENO 0x16 /* UltraSPARC-IIIi */
#define IMPL_JAGUAR 0x18 /* UltraSPARC-IV */
#define IMPL_PANTHER 0x19 /* UltraSPARC-IV+ */
#define IMPL_SERRANO 0x22 /* UltraSPARC-IIIi+ */
/*
* Here are a few things to help us transition between user and kernel mode:
*/
/* Memory models */
#define KERN_MM PSTATE_MM_TSO
#define USER_MM PSTATE_MM_RMO
/*
* Register window handlers. These point to generic routines that check the
* stack pointer and then vector to the real handler. We could optimize this
* if we could guarantee only 32-bit or 64-bit stacks.
*/
#define WSTATE_KERN 026
#define WSTATE_USER 022
#define CWP 0x01f
/*
* UltraSPARC Ancillary State Registers
*/
#define SET_SOFTINT %asr20 /* Set Software Interrupt register bits */
#define CLEAR_SOFTINT %asr21 /* Clear Software Interrupt register bits */
#define SOFTINT %asr22 /* Software Interrupt register */
#define TICK_CMPR %asr23 /* TICK Compare register */
#define STICK %asr24 /* STICK register */
#define STICK_CMPR %asr25 /* STICK Compare register */
/* SOFTINT bit descriptions */
#define TICK_INT 0x01 /* CPU clock timer interrupt */
#define STICK_INT (0x1<<16) /* system clock timer interrupt */
/* 64-byte alignment -- this seems the best place to put this. */
#define SPARC64_BLOCK_SIZE 64
#define SPARC64_BLOCK_ALIGN 0x3f
#if (defined(_KERNEL) || defined(_KMEMUSER)) && !defined(_LOCORE)
typedef uint8_t ipl_t;
typedef struct {
ipl_t _ipl;
} ipl_cookie_t;
#endif /* _KERNEL|_KMEMUSER&!_LOCORE */
#if defined(_KERNEL) && !defined(_LOCORE)
#if defined(_KERNEL_OPT)
#include "opt_sparc_arch.h"
#endif
/*
* Put "memory" to asm inline on sun4v to avoid issuing rdpr %ver
* before checking cputyp as a result of code moving by compiler
* optimization.
*/
#ifdef SUN4V
#define constasm_clobbers "memory"
#else
#define constasm_clobbers
#endif
/*
* Inlines for manipulating privileged and ancillary state registers
*/
#define SPARC64_RDCONST_DEF(rd, name, reg, type) \
static __inline __constfunc type get##name(void) \
{ \
type _val; \
__asm(#rd " %" #reg ",%0" : "=r" (_val) : : constasm_clobbers); \
return _val; \
}
#define SPARC64_RD_DEF(rd, name, reg, type) \
static __inline type get##name(void) \
{ \
type _val; \
__asm volatile(#rd " %" #reg ",%0" : "=r" (_val)); \
return _val; \
}
#define SPARC64_WR_DEF(wr, name, reg, type) \
static __inline void set##name(type _val) \
{ \
__asm volatile(#wr " %0,0,%" #reg : : "r" (_val) : "memory"); \
}
#ifdef __arch64__
#define SPARC64_RDCONST64_DEF(rd, name, reg) \
SPARC64_RDCONST_DEF(rd, name, reg, uint64_t)
#define SPARC64_RD64_DEF(rd, name, reg) SPARC64_RD_DEF(rd, name, reg, uint64_t)
#define SPARC64_WR64_DEF(wr, name, reg) SPARC64_WR_DEF(wr, name, reg, uint64_t)
#else
#define SPARC64_RDCONST64_DEF(rd, name, reg) \
static __inline __constfunc uint64_t get##name(void) \
{ \
uint32_t _hi, _lo; \
__asm(#rd " %" #reg ",%0; srl %0,0,%1; srlx %0,32,%0" \
: "=r" (_hi), "=r" (_lo) : : constasm_clobbers); \
return ((uint64_t)_hi << 32) | _lo; \
}
#define SPARC64_RD64_DEF(rd, name, reg) \
static __inline uint64_t get##name(void) \
{ \
uint32_t _hi, _lo; \
__asm volatile(#rd " %" #reg ",%0; srl %0,0,%1; srlx %0,32,%0" \
: "=r" (_hi), "=r" (_lo)); \
return ((uint64_t)_hi << 32) | _lo; \
}
#define SPARC64_WR64_DEF(wr, name, reg) \
static __inline void set##name(uint64_t _val) \
{ \
uint32_t _hi = _val >> 32, _lo = _val; \
__asm volatile("sllx %1,32,%0; or %0,%2,%0; " #wr " %0,0,%" #reg\
: "=&r" (_hi) /* scratch register */ \
: "r" (_hi), "r" (_lo) : "memory"); \
}
#endif
#define SPARC64_RDPR_DEF(name, reg, type) SPARC64_RD_DEF(rdpr, name, reg, type)
#define SPARC64_WRPR_DEF(name, reg, type) SPARC64_WR_DEF(wrpr, name, reg, type)
#define SPARC64_RDPR64_DEF(name, reg) SPARC64_RD64_DEF(rdpr, name, reg)
#define SPARC64_WRPR64_DEF(name, reg) SPARC64_WR64_DEF(wrpr, name, reg)
#define SPARC64_RDASR64_DEF(name, reg) SPARC64_RD64_DEF(rd, name, reg)
#define SPARC64_WRASR64_DEF(name, reg) SPARC64_WR64_DEF(wr, name, reg)
/* Tick Register (PR 4) */
SPARC64_RDPR64_DEF(tick, %tick) /* gettick() */
SPARC64_WRPR64_DEF(tick, %tick) /* settick() */
/* Processor State Register (PR 6) */
SPARC64_RDPR_DEF(pstate, %pstate, int) /* getpstate() */
SPARC64_WRPR_DEF(pstate, %pstate, int) /* setpstate() */
/* Trap Level Register (PR 7) */
SPARC64_RDPR_DEF(tl, %tl, int) /* gettl() */
/* Current Window Pointer Register (PR 9) */
SPARC64_RDPR_DEF(cwp, %cwp, int) /* getcwp() */
SPARC64_WRPR_DEF(cwp, %cwp, int) /* setcwp() */
/* Version Register (PR 31) */
SPARC64_RDCONST64_DEF(rdpr, ver, %ver) /* getver() */
/* System Tick Register (ASR 24) */
SPARC64_RDASR64_DEF(stick, STICK) /* getstick() */
SPARC64_WRASR64_DEF(stick, STICK) /* setstick() */
/* System Tick Compare Register (ASR 25) */
SPARC64_RDASR64_DEF(stickcmpr, STICK_CMPR) /* getstickcmpr() */
/* Some simple macros to check the cpu type. */
#define GETVER_CPU_MASK() ((getver() & VER_MASK) >> VER_MASK_SHIFT)
#define GETVER_CPU_IMPL() ((getver() & VER_IMPL) >> VER_IMPL_SHIFT)
#define GETVER_CPU_MANUF() ((getver() & VER_MANUF) >> VER_MANUF_SHIFT)
#define CPU_IS_SPITFIRE() (GETVER_CPU_IMPL() == IMPL_SPITFIRE)
#define CPU_IS_HUMMINGBIRD() (GETVER_CPU_IMPL() == IMPL_HUMMINGBIRD)
#define CPU_IS_USIIIi() ((GETVER_CPU_IMPL() == IMPL_JALAPENO) || \
(GETVER_CPU_IMPL() == IMPL_SERRANO))
#define CPU_IS_USIII_UP() (GETVER_CPU_IMPL() >= IMPL_CHEETAH)
#define CPU_IS_SPARC64_V_UP() (GETVER_CPU_MANUF() == MANUF_FUJITSU && \
GETVER_CPU_IMPL() >= IMPL_ZEUS)
static __inline int
intr_disable(void)
{
int pstate = getpstate();
setpstate(pstate & ~PSTATE_IE);
return pstate;
}
static __inline void
intr_restore(int pstate)
{
setpstate(pstate);
}
/*
* GCC pseudo-functions for manipulating PIL
*/
#ifdef SPLDEBUG
void prom_printf(const char *fmt, ...);
extern int printspl;
#define SPLPRINT(x) \
{ \
if (printspl) { \
int i = 10000000; \
prom_printf x ; \
while (i--) \
; \
} \
}
#define SPL(name, newpil) \
static __inline int name##X(const char* file, int line) \
{ \
int oldpil; \
__asm volatile("rdpr %%pil,%0" : "=r" (oldpil)); \
SPLPRINT(("{%s:%d %d=>%d}", file, line, oldpil, newpil)); \
__asm volatile("wrpr %%g0,%0,%%pil" : : "n" (newpil) : "memory"); \
return (oldpil); \
}
/* A non-priority-decreasing version of SPL */
#define SPLHOLD(name, newpil) \
static __inline int name##X(const char* file, int line) \
{ \
int oldpil; \
__asm volatile("rdpr %%pil,%0" : "=r" (oldpil)); \
if (newpil <= oldpil) \
return oldpil; \
SPLPRINT(("{%s:%d %d->!d}", file, line, oldpil, newpil)); \
__asm volatile("wrpr %%g0,%0,%%pil" : : "n" (newpil) : "memory"); \
return (oldpil); \
}
#else
#define SPLPRINT(x)
#define SPL(name, newpil) \
static __inline __always_inline int name(void) \
{ \
int oldpil; \
__asm volatile("rdpr %%pil,%0" : "=r" (oldpil)); \
__asm volatile("wrpr %%g0,%0,%%pil" : : "n" (newpil) : "memory"); \
return (oldpil); \
}
/* A non-priority-decreasing version of SPL */
#define SPLHOLD(name, newpil) \
static __inline __always_inline int name(void) \
{ \
int oldpil; \
__asm volatile("rdpr %%pil,%0" : "=r" (oldpil)); \
if (newpil <= oldpil) \
return oldpil; \
__asm volatile("wrpr %%g0,%0,%%pil" : : "n" (newpil) : "memory"); \
return (oldpil); \
}
#endif
static __inline ipl_cookie_t
makeiplcookie(ipl_t ipl)
{
return (ipl_cookie_t){._ipl = ipl};
}
static __inline int __attribute__((__unused__))
splraiseipl(ipl_cookie_t icookie)
{
int newpil = icookie._ipl;
int oldpil;
/*
* NetBSD/sparc64's IPL_* constants equate directly to the
* corresponding PIL_* names; no need to map them here.
*/
__asm volatile("rdpr %%pil,%0" : "=r" (oldpil));
if (newpil <= oldpil)
return (oldpil);
__asm volatile("wrpr %0,0,%%pil" : : "r" (newpil) : "memory");
return (oldpil);
}
SPL(spl0, 0)
SPLHOLD(splsoftint, 1)
#define splsoftclock splsoftint
#define splsoftnet splsoftint
SPLHOLD(splsoftserial, 4)
/*
* Memory allocation (must be as high as highest network, tty, or disk device)
*/
SPLHOLD(splvm, PIL_VM)
SPLHOLD(splsched, PIL_SCHED)
SPLHOLD(splhigh, PIL_HIGH)
/* splx does not have a return value */
#ifdef SPLDEBUG
#define spl0() spl0X(__FILE__, __LINE__)
#define splsoftint() splsoftintX(__FILE__, __LINE__)
#define splsoftserial() splsoftserialX(__FILE__, __LINE__)
#define splausoft() splausoftX(__FILE__, __LINE__)
#define splfdsoft() splfdsoftX(__FILE__, __LINE__)
#define splvm() splvmX(__FILE__, __LINE__)
#define splclock() splclockX(__FILE__, __LINE__)
#define splfd() splfdX(__FILE__, __LINE__)
#define splzs() splzsX(__FILE__, __LINE__)
#define splserial() splzerialX(__FILE__, __LINE__)
#define splaudio() splaudioX(__FILE__, __LINE__)
#define splstatclock() splstatclockX(__FILE__, __LINE__)
#define splsched() splschedX(__FILE__, __LINE__)
#define spllock() spllockX(__FILE__, __LINE__)
#define splhigh() splhighX(__FILE__, __LINE__)
#define splx(x) splxX((x),__FILE__, __LINE__)
static __inline void splxX(int newpil, const char *file, int line)
#else
static __inline __always_inline void splx(int newpil)
#endif
{
#ifdef SPLDEBUG
int pil;
__asm volatile("rdpr %%pil,%0" : "=r" (pil));
SPLPRINT(("{%d->%d}", pil, newpil));
#endif
__asm volatile("wrpr %%g0,%0,%%pil" : : "rn" (newpil) : "memory");
}
#endif /* KERNEL && !_LOCORE */
#endif /* PSR_IMPL */