6ce70ec7f9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
227 lines
5.6 KiB
C
227 lines
5.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2001 Jake Burkholder.
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* Copyright (c) 2011 Marius Strobl <marius@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_ASMACROS_H_
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#define _MACHINE_ASMACROS_H_
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#ifdef _KERNEL
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/*
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* Normal and alternate %g6 point to the pcb of the current process. Normal,
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* alternate and interrupt %g7 point to per-cpu data.
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*/
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#define PCB_REG %g6
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#define PCPU_REG %g7
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/*
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* Alternate %g5 points to a per-cpu panic stack, which is used as a last
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* resort, and for temporarily saving alternate globals.
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*/
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#define ASP_REG %g5
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#ifdef LOCORE
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/*
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* Atomically decrement an integer in memory.
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*/
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#define ATOMIC_DEC_INT(r1, r2, r3) \
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lduw [r1], r2 ; \
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9: sub r2, 1, r3 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %icc, 9b ; \
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mov r3, r2
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/*
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* Atomically increment an integer in memory.
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*/
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#define ATOMIC_INC_INT(r1, r2, r3) \
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lduw [r1], r2 ; \
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9: add r2, 1, r3 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %icc, 9b ; \
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mov r3, r2
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/*
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* Atomically increment a long in memory.
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*/
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#define ATOMIC_INC_LONG(r1, r2, r3) \
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ldx [r1], r2 ; \
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9: add r2, 1, r3 ; \
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casxa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %xcc, 9b ; \
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mov r3, r2
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/*
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* Atomically clear a number of bits of an integer in memory.
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*/
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#define ATOMIC_CLEAR_INT(r1, r2, r3, bits) \
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lduw [r1], r2 ; \
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9: andn r2, bits, r3 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %icc, 9b ; \
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mov r3, r2
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/*
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* Atomically clear a number of bits of a long in memory.
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*/
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#define ATOMIC_CLEAR_LONG(r1, r2, r3, bits) \
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ldx [r1], r2 ; \
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9: andn r2, bits, r3 ; \
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casxa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %xcc, 9b ; \
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mov r3, r2
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/*
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* Atomically load an integer from memory.
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*/
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#define ATOMIC_LOAD_INT(r1, val) \
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clr val ; \
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casa [r1] ASI_N, %g0, val
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/*
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* Atomically load a long from memory.
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*/
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#define ATOMIC_LOAD_LONG(r1, val) \
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clr val ; \
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casxa [r1] ASI_N, %g0, val
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/*
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* Atomically set a number of bits of an integer in memory.
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*/
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#define ATOMIC_SET_INT(r1, r2, r3, bits) \
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lduw [r1], r2 ; \
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9: or r2, bits, r3 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %icc, 9b ; \
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mov r3, r2
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/*
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* Atomically set a number of bits of a long in memory.
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*/
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#define ATOMIC_SET_LONG(r1, r2, r3, bits) \
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ldx [r1], r2 ; \
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9: or r2, bits, r3 ; \
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casxa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %xcc, 9b ; \
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mov r3, r2
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/*
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* Atomically store an integer in memory.
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*/
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#define ATOMIC_STORE_INT(r1, r2, r3, val) \
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lduw [r1], r2 ; \
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9: mov val, r3 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %icc, 9b ; \
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mov r3, r2
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/*
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* Atomically store a long in memory.
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*/
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#define ATOMIC_STORE_LONG(r1, r2, r3, val) \
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ldx [r1], r2 ; \
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9: mov val, r3 ; \
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casxa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne,pn %xcc, 9b ; \
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mov r3, r2
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#define PCPU(member) PCPU_REG + PC_ ## member
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#define PCPU_ADDR(member, reg) \
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add PCPU_REG, PC_ ## member, reg
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#define DEBUGGER() \
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ta %xcc, 1
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#define PANIC(msg, r1) \
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.sect .rodata ; \
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9: .asciz msg ; \
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.previous ; \
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SET(9b, r1, %o0) ; \
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call panic ; \
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nop
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#ifdef INVARIANTS
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#define KASSERT(r1, msg) \
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brnz,pt r1, 8f ; \
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nop ; \
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PANIC(msg, r1) ; \
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8:
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#else
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#define KASSERT(r1, msg)
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#endif
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#define PUTS(msg, r1) \
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.sect .rodata ; \
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9: .asciz msg ; \
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.previous ; \
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SET(9b, r1, %o0) ; \
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call printf ; \
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nop
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#define _ALIGN_DATA .align 8
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#define DATA(name) \
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.data ; \
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_ALIGN_DATA ; \
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.globl name ; \
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.type name, @object ; \
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name:
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#define EMPTY
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/*
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* Generate atomic compare and swap, load and store instructions for the
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* corresponding width and ASI (or not). Note that we want to evaluate the
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* macro args before concatenating, so that EMPTY really turns into nothing.
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*/
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#define _LD(w, a) ld ## w ## a
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#define _ST(w, a) st ## w ## a
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#define _CAS(w, a) cas ## w ## a
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#define LD(w, a) _LD(w, a)
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#define ST(w, a) _ST(w, a)
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#define CAS(w, a) _CAS(w, a)
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#endif /* LOCORE */
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#endif /* _KERNEL */
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#endif /* !_MACHINE_ASMACROS_H_ */
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