mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
8ecb006f39
Adapted from patch by: David Cornejo <dcornejo@firetide.com> Reviewed by: freebsd-sparc64 (harti) Approved by: rwatson (mentor)
144 lines
3.4 KiB
C
144 lines
3.4 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 increment an u_long in memory.
|
|
*/
|
|
#define ATOMIC_INC_ULONG(r1, r2, r3) \
|
|
ldx [r1], r2 ; \
|
|
9: add r2, 1, r3 ; \
|
|
casxa [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, %o2) ; \
|
|
clr %o1 ; \
|
|
clr %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
|
|
|
|
#define _ALIGN_DATA .align 8
|
|
|
|
#define DATA(name) \
|
|
.data ; \
|
|
_ALIGN_DATA ; \
|
|
.globl name ; \
|
|
.type name, @object ; \
|
|
name:
|
|
|
|
#define EMPTY
|
|
|
|
#endif /* LOCORE */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_ASMACROS_H_ */
|