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/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef _MACH_O_ARCH_H_
#define _MACH_O_ARCH_H_
/*
* Copyright (c) 1997 Apple Computer, Inc.
*
* Functions that deal with information about architectures.
*
*/
#include <stdint.h>
#include <mach/machine.h>
#include <architecture/byte_order.h>
/* The NXArchInfo structs contain the architectures symbolic name
* (such as "ppc"), its CPU type and CPU subtype as defined in
* mach/machine.h, the byte order for the architecture, and a
* describing string (such as "PowerPC").
* There will both be entries for specific CPUs (such as ppc604e) as
* well as generic "family" entries (such as ppc).
*/
typedef struct {
const char *name;
cpu_type_t cputype;
cpu_subtype_t cpusubtype;
enum NXByteOrder byteorder;
const char *description;
} NXArchInfo;
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
/* NXGetAllArchInfos() returns a pointer to an array of all known
* NXArchInfo structures. The last NXArchInfo is marked by a NULL name.
*/
extern const NXArchInfo *NXGetAllArchInfos(void);
/* NXGetLocalArchInfo() returns the NXArchInfo for the local host, or NULL
* if none is known.
*/
extern const NXArchInfo *NXGetLocalArchInfo(void);
/* NXGetArchInfoFromName() and NXGetArchInfoFromCpuType() return the
* NXArchInfo from the architecture's name or cputype/cpusubtype
* combination. A cpusubtype of CPU_SUBTYPE_MULTIPLE can be used
* to request the most general NXArchInfo known for the given cputype.
* NULL is returned if no matching NXArchInfo can be found.
*/
extern const NXArchInfo *NXGetArchInfoFromName(const char *name);
extern const NXArchInfo *NXGetArchInfoFromCpuType(cpu_type_t cputype,
cpu_subtype_t cpusubtype);
/* NXFindBestFatArch() is passed a cputype and cpusubtype and a set of
* fat_arch structs and selects the best one that matches (if any) and returns
* a pointer to that fat_arch struct (or NULL). The fat_arch structs must be
* in the host byte order and correct such that the fat_archs really points to
* enough memory for nfat_arch structs. It is possible that this routine could
* fail if new cputypes or cpusubtypes are added and an old version of this
* routine is used. But if there is an exact match between the cputype and
* cpusubtype and one of the fat_arch structs this routine will always succeed.
*/
extern struct fat_arch *NXFindBestFatArch(cpu_type_t cputype,
cpu_subtype_t cpusubtype,
struct fat_arch *fat_archs,
uint32_t nfat_archs);
/* NXCombineCpuSubtypes() returns the resulting cpusubtype when combining two
* different cpusubtypes for the specified cputype. If the two cpusubtypes
* can't be combined (the specific subtypes are mutually exclusive) -1 is
* returned indicating it is an error to combine them. This can also fail and
* return -1 if new cputypes or cpusubtypes are added and an old version of
* this routine is used. But if the cpusubtypes are the same they can always
* be combined and this routine will return the cpusubtype pass in.
*/
extern cpu_subtype_t NXCombineCpuSubtypes(cpu_type_t cputype,
cpu_subtype_t cpusubtype1,
cpu_subtype_t cpusubtype2);
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* _MACH_O_ARCH_H_ */
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