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have ACLE support built in. The ACLE (ARM C Language Extensions) defines a set of standardized symbols which indicate the architecture version and features available. ACLE support is built in to modern compilers (both clang and gcc), but absent from gcc prior to 4.4. ARM (the company) provides the acle-compat.h header file to define the right symbols for older versions of gcc. Basically, acle-compat.h does for arm about the same thing cdefs.h does for freebsd: defines standardized macros that work no matter which compiler you use. If ARM hadn't provided this file we would have ended up with a big #ifdef __arm__ section in cdefs.h with our own compatibility shims. Remove #include <machine/acle-compat.h> from the zillion other places (an ever-growing list) that it appears. Since style(9) requires sys/types.h or sys/param.h early in the include list, and both of those lead to including cdefs.h, only a couple special cases still need to include acle-compat.h directly. Loves it: imp
99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink Exp $ */
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/*-
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* Copyright (c) 1996-1997 Mark Brinicombe.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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#ifndef _ARM_SYSARCH_H_
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#define _ARM_SYSARCH_H_
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#include <machine/armreg.h>
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/*
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* The ARM_TP_ADDRESS points to a special purpose page, which is used as local
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* store for the ARM per-thread data and Restartable Atomic Sequences support.
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* Put it just above the "high" vectors' page.
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* The cpu_switch() code assumes ARM_RAS_START is ARM_TP_ADDRESS + 4, and
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* ARM_RAS_END is ARM_TP_ADDRESS + 8, so if that ever changes, be sure to
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* update the cpu_switch() (and cpu_throw()) code as well.
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* In addition, code in arm/include/atomic.h and arm/arm/exception.S
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* assumes that ARM_RAS_END is at ARM_RAS_START+4, so be sure to update those
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* if ARM_RAS_END moves in relation to ARM_RAS_START (look for occurrences
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* of ldr/str rm,[rn, #4]).
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*/
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/* ARM_TP_ADDRESS is needed for processors that don't support
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* the exclusive-access opcodes introduced with ARMv6K. */
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#if __ARM_ARCH <= 5
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#define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000)
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#define ARM_RAS_START (ARM_TP_ADDRESS + 4)
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#define ARM_RAS_END (ARM_TP_ADDRESS + 8)
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#endif
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#ifndef LOCORE
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#ifndef __ASSEMBLER__
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#include <sys/cdefs.h>
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/*
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* Pickup definition of uintptr_t
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*/
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#include <sys/stdint.h>
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/*
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* Architecture specific syscalls (arm)
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*/
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#define ARM_SYNC_ICACHE 0
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#define ARM_DRAIN_WRITEBUF 1
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#define ARM_SET_TP 2
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#define ARM_GET_TP 3
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struct arm_sync_icache_args {
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uintptr_t addr; /* Virtual start address */
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size_t len; /* Region size */
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};
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#ifndef _KERNEL
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__BEGIN_DECLS
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int arm_sync_icache (u_int addr, int len);
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int arm_drain_writebuf (void);
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int sysarch(int, void *);
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__END_DECLS
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#endif
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#endif /* __ASSEMBLER__ */
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#endif /* LOCORE */
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#endif /* !_ARM_SYSARCH_H_ */
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