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ecbf02791f
Most of this file was a pile of defines, apparently from Solaris that controlled nothing in the source tree. A few things controlled the definition of unused types or macros which I have removed. Considerable further cleanup is possible including removal of architectures FreeBSD never supported. This file should likely converge with the Linux version to the extent possible. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Brooks Davis <brooks.davis@sri.com> Closes #14127
298 lines
7.4 KiB
C
298 lines
7.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_ISA_DEFS_H
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#define _SYS_ISA_DEFS_H
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#include <sys/endian.h>
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/*
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* This header file serves to group a set of well known defines and to
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* set these for each instruction set architecture. These defines may
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* be divided into two groups; characteristics of the processor and
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* implementation choices for Solaris on a processor.
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*
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* Processor Characteristics:
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*
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* _LITTLE_ENDIAN / _BIG_ENDIAN:
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* The natural byte order of the processor. A pointer to an int points
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* to the least/most significant byte of that int.
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*
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*
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* Implementation Choices:
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*
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* _ILP32 / _LP64:
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* This specifies the compiler data type implementation as specified in
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* the relevant ABI. The choice between these is strongly influenced
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* by the underlying hardware, but is not absolutely tied to it.
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* Currently only two data type models are supported:
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*
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* _ILP32:
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* Int/Long/Pointer are 32 bits. This is the historical UNIX
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* and Solaris implementation. Due to its historical standing,
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* this is the default case.
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*
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* _LP64:
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* Long/Pointer are 64 bits, Int is 32 bits. This is the chosen
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* implementation for 64-bit ABIs such as SPARC V9.
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*
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* In all cases, Char is 8 bits and Short is 16 bits.
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*
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* _SUNOS_VTOC_8 / _SUNOS_VTOC_16 / _SVR4_VTOC_16:
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* This specifies the form of the disk VTOC (or label):
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*
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* _SUNOS_VTOC_8:
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* This is a VTOC form which is upwardly compatible with the
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* SunOS 4.x disk label and allows 8 partitions per disk.
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*
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* _SUNOS_VTOC_16:
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* In this format the incore vtoc image matches the ondisk
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* version. It allows 16 slices per disk, and is not
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* compatible with the SunOS 4.x disk label.
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*
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* Note that these are not the only two VTOC forms possible and
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* additional forms may be added. One possible form would be the
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* SVr4 VTOC form. The symbol for that is reserved now, although
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* it is not implemented.
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*
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* _SVR4_VTOC_16:
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* This VTOC form is compatible with the System V Release 4
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* VTOC (as implemented on the SVr4 Intel and 3b ports) with
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* 16 partitions per disk.
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*
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*
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* __x86
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* This is ONLY a synonym for defined(__i386) || defined(__amd64)
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* which is useful only insofar as these two architectures share
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* common attributes. Analogous to __sparc.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* The following set of definitions characterize Solaris on AMD's
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* 64-bit systems.
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*/
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#if defined(__x86_64) || defined(__amd64)
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#if !defined(__amd64)
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#define __amd64 /* preferred guard */
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#endif
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#if !defined(__x86)
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#define __x86
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#endif
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/*
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* Define the appropriate "implementation choices".
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*/
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#if !defined(_LP64)
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#error "_LP64 not defined"
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#endif
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#define _SUNOS_VTOC_16
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/*
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* The feature test macro __i386 is generic for all processors implementing
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* the Intel 386 instruction set or a superset of it. Specifically, this
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* includes all members of the 386, 486, and Pentium family of processors.
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*/
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#elif defined(__i386) || defined(__i386__)
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#if !defined(__i386)
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#define __i386
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#endif
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#if !defined(__x86)
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#define __x86
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#endif
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/*
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* Define the appropriate "implementation choices".
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*/
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#if !defined(_ILP32)
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#define _ILP32
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#endif
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#define _SUNOS_VTOC_16
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#elif defined(__aarch64__)
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/*
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* Define the appropriate "implementation choices"
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*/
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#if !defined(_LP64)
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#error "_LP64 not defined"
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#endif
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#define _SUNOS_VTOC_16
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#elif defined(__riscv)
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/*
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* Define the appropriate "implementation choices"
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*/
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#if !defined(_LP64)
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#define _LP64
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#endif
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#define _SUNOS_VTOC_16
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#elif defined(__arm__)
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/*
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* Define the appropriate "implementation choices".
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*/
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#if !defined(_ILP32)
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#define _ILP32
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#endif
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#define _SUNOS_VTOC_16
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#elif defined(__mips__)
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#if defined(__mips_n64)
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/*
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* Define the appropriate "implementation choices".
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*/
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#if !defined(_LP64)
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#error "_LP64 not defined"
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#endif
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#else
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/*
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* Define the appropriate "implementation choices".
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*/
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#if !defined(_ILP32)
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#define _ILP32
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#endif
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#endif
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#define _SUNOS_VTOC_16
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#elif defined(__powerpc__)
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#if !defined(__powerpc)
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#define __powerpc
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#endif
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#define _SUNOS_VTOC_16 1
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/*
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* The following set of definitions characterize the Solaris on SPARC systems.
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*
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* The symbol __sparc indicates any of the SPARC family of processor
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* architectures. This includes SPARC V7, SPARC V8 and SPARC V9.
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*
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* The symbol __sparcv8 indicates the 32-bit SPARC V8 architecture as defined
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* by Version 8 of the SPARC Architecture Manual. (SPARC V7 is close enough
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* to SPARC V8 for the former to be subsumed into the latter definition.)
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*
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* The symbol __sparcv9 indicates the 64-bit SPARC V9 architecture as defined
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* by Version 9 of the SPARC Architecture Manual.
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*
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* The symbols __sparcv8 and __sparcv9 are mutually exclusive, and are only
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* relevant when the symbol __sparc is defined.
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*/
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/*
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* XXX Due to the existence of 5110166, "defined(__sparcv9)" needs to be added
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* to support backwards builds. This workaround should be removed in s10_71.
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*/
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#elif defined(__sparc) || defined(__sparcv9) || defined(__sparc__)
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#if !defined(__sparc)
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#define __sparc
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#endif
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/*
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* You can be 32-bit or 64-bit, but not both at the same time.
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*/
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#if defined(__sparcv8) && defined(__sparcv9)
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#error "SPARC Versions 8 and 9 are mutually exclusive choices"
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#endif
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/*
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* Existing compilers do not set __sparcv8. Years will transpire before
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* the compilers can be depended on to set the feature test macro. In
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* the interim, we'll set it here on the basis of historical behaviour;
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* if you haven't asked for SPARC V9, then you must've meant SPARC V8.
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*/
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#if !defined(__sparcv9) && !defined(__sparcv8)
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#define __sparcv8
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#endif
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/*
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* Define the appropriate "implementation choices" shared between versions.
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*/
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#define _SUNOS_VTOC_8
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/*
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* The following set of definitions characterize the implementation of
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* 32-bit Solaris on SPARC V8 systems.
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*/
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#if defined(__sparcv8)
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/*
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* Define the appropriate "implementation choices"
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*/
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#define _ILP32
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/*
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* The following set of definitions characterize the implementation of
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* 64-bit Solaris on SPARC V9 systems.
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*/
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#elif defined(__sparcv9)
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/*
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* Define the appropriate "implementation choices"
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*/
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#if !defined(_LP64)
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#error "_LP64 not defined"
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#endif
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#else
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#error "unknown SPARC version"
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#endif
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/*
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* #error is strictly ansi-C, but works as well as anything for K&R systems.
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*/
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#else
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#error "ISA not supported"
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#endif
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#if defined(_ILP32) && defined(_LP64)
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#error "Both _ILP32 and _LP64 are defined"
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#endif
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#if BYTE_ORDER == _BIG_ENDIAN
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#define _ZFS_BIG_ENDIAN
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#elif BYTE_ORDER == _LITTLE_ENDIAN
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#define _ZFS_LITTLE_ENDIAN
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#else
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#error "unknown byte order"
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ISA_DEFS_H */
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