freebsd-dev/sys/sparc64/include/asmacros.h
Jake Burkholder 8b53c815ec Add pmap support for user mappings of multiple page sizes (super pages).
This supports all hardware page sizes (8K, 64K, 512K, 4MB), but only 8k
pages are actually used as of yet.
2002-08-18 02:09:27 +00:00

158 lines
3.6 KiB
C

/*-
* Copyright (c) 2001 Jake Burkholder.
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_ASMACROS_H_
#define _MACHINE_ASMACROS_H_
#ifdef _KERNEL
/*
* Normal and alternate %g6 point to the pcb of the current process. Normal,
& alternate and interrupt %g7 point to per-cpu data.
*/
#define PCB_REG %g6
#define PCPU_REG %g7
/*
* Alternate %g5 points to a per-cpu panic stack, which is used as a last
* resort, and for temporarily saving alternate globals.
*/
#define ASP_REG %g5
#ifdef LOCORE
/*
* Atomically decrement an integer in memory.
*/
#define ATOMIC_DEC_INT(r1, r2, r3) \
lduw [r1], r2 ; \
9: sub r2, 1, r3 ; \
casa [r1] ASI_N, r2, r3 ; \
cmp r2, r3 ; \
bne,pn %icc, 9b ; \
mov r3, r2
/*
* Atomically increment an integer in memory.
*/
#define ATOMIC_INC_INT(r1, r2, r3) \
lduw [r1], r2 ; \
9: add r2, 1, r3 ; \
casa [r1] ASI_N, r2, r3 ; \
cmp r2, r3 ; \
bne,pn %icc, 9b ; \
mov r3, r2
/*
* Atomically clear a number of bits of an integer in memory.
*/
#define ATOMIC_CLEAR_INT(r1, r2, r3, bits) \
lduw [r1], r2 ; \
9: andn r2, bits, r3 ; \
casa [r1] ASI_N, r2, r3 ; \
cmp r2, r3 ; \
bne,pn %icc, 9b ; \
mov r3, r2
#define PCPU(member) PCPU_REG + PC_ ## member
#define PCPU_ADDR(member, reg) \
add PCPU_REG, PC_ ## member, reg
#define DEBUGGER() \
ta %xcc, 1
#define PANIC(msg, r1) \
.sect .rodata ; \
9: .asciz msg ; \
.previous ; \
SET(9b, r1, %o0) ; \
call panic ; \
nop
#ifdef INVARIANTS
#define KASSERT(r1, msg) \
brnz r1, 8f ; \
nop ; \
PANIC(msg, r1) ; \
8:
#else
#define KASSERT(r1, msg)
#endif
#define PUTS(msg, r1) \
.sect .rodata ; \
9: .asciz msg ; \
.previous ; \
SET(9b, r1, %o0) ; \
call printf ; \
nop
/*
* If the kernel can be located above 4G, setx needs to be used to load
* symbol values, otherwise set is sufficient.
*/
#ifdef HIGH_KERNEL
#define SET(sym, tmp, dst) \
setx sym, tmp, dst
#else
#define SET(sym, tmp, dst) \
set sym, dst
#endif
#define _ALIGN_DATA .align 8
#ifdef GPROF
#define _ALIGN_TEXT .align 32
#else
#define _ALIGN_TEXT .align 16
#endif
#define DATA(name) \
.data ; \
_ALIGN_DATA ; \
.globl name ; \
.type name, @object ; \
name ## :
#define EMPTY
#define ENTRY(name) \
.text ; \
_ALIGN_TEXT ; \
.globl name ; \
.type name, @function ; \
name ## :
#define END(name) \
.size name, . - name
#endif /* LOCORE */
#endif /* _KERNEL */
#endif /* !_MACHINE_ASMACROS_H_ */