asmacros.h revision 89032
1273257Srpaulo/*- 2273257Srpaulo * Copyright (c) 2001 Jake Burkholder. 3273257Srpaulo * All rights reserved. 4273257Srpaulo * 5273257Srpaulo * Redistribution and use in source and binary forms, with or without 6273257Srpaulo * modification, are permitted provided that the following conditions 7273257Srpaulo * are met: 8273257Srpaulo * 1. Redistributions of source code must retain the above copyright 9273257Srpaulo * notice, this list of conditions and the following disclaimer. 10273257Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 11273257Srpaulo * notice, this list of conditions and the following disclaimer in the 12273257Srpaulo * documentation and/or other materials provided with the distribution. 13273257Srpaulo * 14273257Srpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15273257Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16273257Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17273257Srpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18273257Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19273257Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20273257Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21273257Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22273257Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23273257Srpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24273257Srpaulo * SUCH DAMAGE. 25273257Srpaulo * 26273257Srpaulo * $FreeBSD: head/sys/sparc64/include/asmacros.h 89032 2002-01-08 04:34:20Z jake $ 27273257Srpaulo */ 28273257Srpaulo 29273257Srpaulo#ifndef _MACHINE_ASMACROS_H_ 30273257Srpaulo#define _MACHINE_ASMACROS_H_ 31273257Srpaulo 32273257Srpaulo#ifdef _KERNEL 33273257Srpaulo 34273257Srpaulo/* 35273257Srpaulo * Normal and alternate %g6 point to the pcb of the current process. Normal, 36273257Srpaulo & alternate and interrupt %g7 point to per-cpu data. 37273257Srpaulo */ 38273257Srpaulo#define PCB_REG %g6 39273257Srpaulo#define PCPU_REG %g7 40273257Srpaulo 41273257Srpaulo/* 42273257Srpaulo * Alternate %g5 points to a per-cpu panic stack, which is used as a last 43273257Srpaulo * resort, and for temporarily saving alternate globals. 44273257Srpaulo */ 45273257Srpaulo#define ASP_REG %g5 46273257Srpaulo 47273257Srpaulo/* 48273257Srpaulo * MMU %g7 points to the user tsb. 49273257Srpaulo */ 50273257Srpaulo#define TSB_REG %g7 51273257Srpaulo 52273257Srpaulo#ifdef LOCORE 53273257Srpaulo 54273257Srpaulo/* 55273257Srpaulo * Atomically decrement an integer in memory. 56273257Srpaulo */ 57273257Srpaulo#define ATOMIC_DEC_INT(r1, r2, r3) \ 58273257Srpaulo lduw [r1], r2 ; \ 59273257Srpaulo9: sub r2, 1, r3 ; \ 60273257Srpaulo casa [r1] ASI_N, r2, r3 ; \ 61273257Srpaulo cmp r2, r3 ; \ 62273257Srpaulo bne,pn %xcc, 9b ; \ 63273257Srpaulo mov r3, r2 64273257Srpaulo 65273257Srpaulo/* 66273257Srpaulo * Atomically increment an integer in memory. 67273257Srpaulo */ 68273257Srpaulo#define ATOMIC_INC_INT(r1, r2, r3) \ 69273257Srpaulo lduw [r1], r2 ; \ 70273257Srpaulo9: add r2, 1, r3 ; \ 71273257Srpaulo casa [r1] ASI_N, r2, r3 ; \ 72273257Srpaulo cmp r2, r3 ; \ 73273257Srpaulo bne,pn %xcc, 9b ; \ 74273257Srpaulo mov r3, r2 75273257Srpaulo 76273257Srpaulo#define PCPU(member) %g7 + PC_ ## member 77273257Srpaulo#define PCPU_ADDR(member, reg) add %g7, PC_ ## member, reg 78273257Srpaulo 79273257Srpaulo#define DEBUGGER() ta %xcc, 1 80273257Srpaulo 81273257Srpaulo#define PANIC(msg, r1) \ 82273257Srpaulo .sect .rodata ; \ 83273257Srpaulo9: .asciz msg ; \ 84273257Srpaulo .previous ; \ 85273257Srpaulo SET(9b, r1, %o0) ; \ 86273257Srpaulo call panic ; \ 87273257Srpaulo nop 88273257Srpaulo 89273257Srpaulo#ifdef INVARIANTS 90273257Srpaulo#define KASSERT(r1, msg) \ 91273257Srpaulo brnz r1, 8f ; \ 92273257Srpaulo nop ; \ 93273257Srpaulo PANIC(msg, r1) ; \ 94273257Srpaulo8: 95273257Srpaulo#else 96273257Srpaulo#define KASSERT(r1, msg) 97276029Sian#endif 98273257Srpaulo 99273257Srpaulo#define PUTS(msg, r1) \ 100273281Srpaulo .sect .rodata ; \ 101273257Srpaulo9: .asciz msg ; \ 102273257Srpaulo .previous ; \ 103273257Srpaulo SET(9b, r1, %o0) ; \ 104273257Srpaulo call printf ; \ 105273257Srpaulo nop 106273257Srpaulo 107273281Srpaulo/* 108273257Srpaulo * If the kernel can be located above 4G, setx needs to be used to load 109273257Srpaulo * symbol values, otherwise set is sufficient. 110273257Srpaulo */ 111273257Srpaulo#ifdef HIGH_KERNEL 112273257Srpaulo#define SET(sym, tmp, dst) \ 113273257Srpaulo setx sym, tmp, dst 114273257Srpaulo#else 115273257Srpaulo#define SET(sym, tmp, dst) \ 116273257Srpaulo set sym, dst 117273281Srpaulo#endif 118273257Srpaulo 119273257Srpaulo#endif /* LOCORE */ 120273257Srpaulo 121273257Srpaulo#endif /* _KERNEL */ 122273257Srpaulo 123273257Srpaulo#define DATA(name) \ 124273257Srpaulo .data ; \ 125273281Srpaulo .globl name ; \ 126273257Srpaulo .type name, @object ; \ 127273257Srpauloname ## : 128273257Srpaulo 129273257Srpaulo#define EMPTY 130273257Srpaulo 131273257Srpaulo#define ENTRY(name) \ 132273257Srpaulo .text ; \ 133273257Srpaulo .align 16 ; \ 134273257Srpaulo .globl name ; \ 135273257Srpaulo .type name, @function ; \ 136273281Srpauloname ## : 137273257Srpaulo 138273257Srpaulo#define END(name) \ 139273257Srpaulo .size name, . - name 140273257Srpaulo 141273257Srpaulo#endif /* !_MACHINE_ASMACROS_H_ */ 142273257Srpaulo