[apple/xnu.git] / osfmk / ppc / cpu_capabilities.h

/*
 * Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#ifdef	PRIVATE

#ifndef _PPC_CPU_CAPABILITIES_H
#define _PPC_CPU_CAPABILITIES_H

/* _cpu_capabilities
 *
 * This is the authoritative way to determine from user mode what
 * implementation-specific processor features are available.
 * This API is only supported for Apple internal use.
 */

#ifndef	__ASSEMBLER__
 
extern int _cpu_capabilities;
 
#endif /* __ASSEMBLER__ */

/* Bit definitions for _cpu_capabilities: */

#define	kHasAltivec				0x00000001
#define	k64Bit					0x00000002	// 64-bit GPRs
#define	kCache32				0x00000004	// cache line size is 32 bytes
#define	kCache64				0x00000008
#define	kCache128				0x00000010
#define	kDcbaRecommended		0x00000020	// PPC: dcba is available and recommended
#define	kDcbaAvailable			0x00000040	// PPC: dcba is available (but may or may not be recommended)
#define	kDataStreamsRecommended	0x00000080	// PPC: dst, dstt, dstst, dss, and dssall instructions available and recommended
#define	kDataStreamsAvailable	0x00000100	// PPC: dst, dstt, dstst, dss, and dssall instructions available (may or may not be rec'd)
#define	kDcbtStreamsRecommended	0x00000200	// PPC: enhanced dcbt instruction available and recommended
#define	kDcbtStreamsAvailable	0x00000400	// PPC: enhanced dcbt instruction available (but may or may not be recommended)
#define	kFastThreadLocalStorage	0x00000800	// TLS ptr is kept in a user-mode-readable register

#define	kUP						0x00008000	// set if (kNumCPUs == 1)
#define	kNumCPUs				0x00FF0000	// number of CPUs (see _NumCPUs() below)

#define	kNumCPUsShift			16			// see _NumCPUs() below

#define	kHasGraphicsOps			0x08000000	// PPC: has fres, frsqrte, and fsel instructions
#define	kHasStfiwx				0x10000000	// PPC: has stfiwx instruction
#define	kHasFsqrt				0x20000000	// PPC: has fsqrt and fsqrts instructions

#ifndef	__ASSEMBLER__
 
static __inline__ int _NumCPUs( void ) { return (_cpu_capabilities & kNumCPUs) >> kNumCPUsShift; }

#endif /* __ASSEMBLER__ */


/*
 * The shared kernel/user "comm page(s)":
 *
 * The last eight pages of every address space are reserved for the kernel/user
 * "comm area".  Because they can be addressed via a sign-extended 16-bit field,
 * it is particularly efficient to access code or data in the comm area with
 * absolute branches (ba, bla, bca) or absolute load/stores ("lwz r0,-4096(0)").
 * Because the comm area can be reached from anywhere, dyld is not needed.
 * Although eight pages are reserved, presently only two are populated and mapped.
 *
 * Routines on the comm page(s) can be thought of as the firmware for extended processor
 * instructions, whose opcodes are special forms of "bla".  Ie, they are cpu
 * capabilities.  During system initialization, the kernel populates the comm page with
 * code customized for the particular processor and platform.
 *
 * Because Mach VM cannot map the last page of an address space, the max length of
 * the comm area is seven pages.
 */
 
#define _COMM_PAGE_BASE_ADDRESS			(-8*4096)						// start at page -8, ie 0xFFFF8000
#define	_COMM_PAGE_AREA_LENGTH			( 7*4096)						// reserved length of entire comm area
#define	_COMM_PAGE_AREA_USED			( 2*4096)						// we use two pages so far

/* The following set of definitions are used in the kernel, which needs to distinguish between
 * the 32 and 64-bit commpage addresses and lengths.  On PPC they are the same, but on Imtel
 * they are not.
 */
#define _COMM_PAGE32_BASE_ADDRESS		( _COMM_PAGE_BASE_ADDRESS )
#define _COMM_PAGE64_BASE_ADDRESS		( _COMM_PAGE_BASE_ADDRESS )
#define	_COMM_PAGE32_AREA_LENGTH		( _COMM_PAGE_AREA_LENGTH )
#define	_COMM_PAGE64_AREA_LENGTH		( _COMM_PAGE_AREA_LENGTH )
#define	_COMM_PAGE32_AREA_USED			( _COMM_PAGE_AREA_USED )
#define	_COMM_PAGE64_AREA_USED			( _COMM_PAGE_AREA_USED )

/* The Objective-C runtime fixed address page to optimize message dispatch */
#define _OBJC_PAGE_BASE_ADDRESS			(-20*4096)						// start at page -20, ie 0xFFFEC000
 
/* data in the comm page */
 
#define _COMM_PAGE_SIGNATURE			(_COMM_PAGE_BASE_ADDRESS+0x000)	// first few bytes are a signature
#define _COMM_PAGE_VERSION				(_COMM_PAGE_BASE_ADDRESS+0x01E)	// 16-bit version#
#define	_COMM_PAGE_THIS_VERSION			2								// this is version 2 of the commarea format
  
#define _COMM_PAGE_CPU_CAPABILITIES		(_COMM_PAGE_BASE_ADDRESS+0x020)	// mirror of extern int _cpu_capabilities
#define _COMM_PAGE_NCPUS				(_COMM_PAGE_BASE_ADDRESS+0x021)	// number of configured CPUs
#define _COMM_PAGE_ALTIVEC				(_COMM_PAGE_BASE_ADDRESS+0x024)	// nonzero if Altivec available
#define _COMM_PAGE_64_BIT				(_COMM_PAGE_BASE_ADDRESS+0x025)	// nonzero if 64-bit processor
#define _COMM_PAGE_CACHE_LINESIZE		(_COMM_PAGE_BASE_ADDRESS+0x026)	// cache line size (16-bit field)
 
#define _COMM_PAGE_UNUSED1				(_COMM_PAGE_BASE_ADDRESS+0x028)	// 24 unused bytes
 
#define _COMM_PAGE_2_TO_52				(_COMM_PAGE_BASE_ADDRESS+0x040)	// double float constant 2**52
#define _COMM_PAGE_10_TO_6				(_COMM_PAGE_BASE_ADDRESS+0x048)	// double float constant 10**6
#define _COMM_PAGE_MAGIC_FE             (_COMM_PAGE_BASE_ADDRESS+0x050) // magic constant 0xFEFEFEFEFEFEFEFF (to find 0s)
#define _COMM_PAGE_MAGIC_80             (_COMM_PAGE_BASE_ADDRESS+0x058) // magic constant 0x8080808080808080 (to find 0s)
 
#define _COMM_PAGE_TIMEBASE				(_COMM_PAGE_BASE_ADDRESS+0x060)	// used by gettimeofday()
#define _COMM_PAGE_TIMESTAMP			(_COMM_PAGE_BASE_ADDRESS+0x068)	// used by gettimeofday()
#define _COMM_PAGE_SEC_PER_TICK			(_COMM_PAGE_BASE_ADDRESS+0x070)	// used by gettimeofday()
 
 /* jump table (bla to this address, which may be a branch to the actual code somewhere else) */
 /* When new jump table entries are added, corresponding symbols should be added below         */
 
#define _COMM_PAGE_COMPARE_AND_SWAP32   (_COMM_PAGE_BASE_ADDRESS+0x080) // compare-and-swap word, no barrier
#define _COMM_PAGE_COMPARE_AND_SWAP64   (_COMM_PAGE_BASE_ADDRESS+0x0c0) // compare-and-swap doubleword, no barrier
#define _COMM_PAGE_ENQUEUE				(_COMM_PAGE_BASE_ADDRESS+0x100) // enqueue
#define _COMM_PAGE_DEQUEUE				(_COMM_PAGE_BASE_ADDRESS+0x140) // dequeue
#define _COMM_PAGE_MEMORY_BARRIER		(_COMM_PAGE_BASE_ADDRESS+0x180) // memory barrier
#define _COMM_PAGE_ATOMIC_ADD32			(_COMM_PAGE_BASE_ADDRESS+0x1a0) // add atomic word
#define _COMM_PAGE_ATOMIC_ADD64			(_COMM_PAGE_BASE_ADDRESS+0x1c0) // add atomic doubleword

#define _COMM_PAGE_UNUSED3				(_COMM_PAGE_BASE_ADDRESS+0x1e0) // 32 unused bytes

#define _COMM_PAGE_ABSOLUTE_TIME		(_COMM_PAGE_BASE_ADDRESS+0x200)	// mach_absolute_time()
#define _COMM_PAGE_SPINLOCK_TRY			(_COMM_PAGE_BASE_ADDRESS+0x220)	// spinlock_try()
#define _COMM_PAGE_SPINLOCK_LOCK		(_COMM_PAGE_BASE_ADDRESS+0x260)	// spinlock_lock()
#define _COMM_PAGE_SPINLOCK_UNLOCK		(_COMM_PAGE_BASE_ADDRESS+0x2a0)	// spinlock_unlock()
#define _COMM_PAGE_PTHREAD_GETSPECIFIC	(_COMM_PAGE_BASE_ADDRESS+0x2c0)	// pthread_getspecific()
#define _COMM_PAGE_GETTIMEOFDAY			(_COMM_PAGE_BASE_ADDRESS+0x2e0)	// used by gettimeofday()
#define _COMM_PAGE_FLUSH_DCACHE			(_COMM_PAGE_BASE_ADDRESS+0x4e0)	// sys_dcache_flush()
#define _COMM_PAGE_FLUSH_ICACHE			(_COMM_PAGE_BASE_ADDRESS+0x520)	// sys_icache_invalidate()
#define _COMM_PAGE_PTHREAD_SELF			(_COMM_PAGE_BASE_ADDRESS+0x580)	// pthread_self()

#define	_COMM_PAGE_UNUSED4				(_COMM_PAGE_BASE_ADDRESS+0x5a0)	// 32 unused bytes

#define	_COMM_PAGE_RELINQUISH			(_COMM_PAGE_BASE_ADDRESS+0x5c0)	// used by spinlocks
 
#define _COMM_PAGE_UNUSED5				(_COMM_PAGE_BASE_ADDRESS+0x5e0)	// 32 unused bytes
 
#define _COMM_PAGE_BZERO				(_COMM_PAGE_BASE_ADDRESS+0x600)	// bzero()
#define _COMM_PAGE_BCOPY				(_COMM_PAGE_BASE_ADDRESS+0x780)	// bcopy()
#define	_COMM_PAGE_MEMCPY				(_COMM_PAGE_BASE_ADDRESS+0x7a0)	// memcpy()
#define	_COMM_PAGE_MEMMOVE				(_COMM_PAGE_BASE_ADDRESS+0x7a0)	// memmove()

#define _COMM_PAGE_COMPARE_AND_SWAP32B  (_COMM_PAGE_BASE_ADDRESS+0xf80)	// compare-and-swap word w barrier
#define _COMM_PAGE_COMPARE_AND_SWAP64B  (_COMM_PAGE_BASE_ADDRESS+0xfc0)	// compare-and-swap doubleword w barrier

#define	_COMM_PAGE_MEMSET_PATTERN       (_COMM_PAGE_BASE_ADDRESS+0x1000)// used by nonzero memset()
#define	_COMM_PAGE_BIGCOPY				(_COMM_PAGE_BASE_ADDRESS+0x1140)// very-long-operand copies

#define _COMM_PAGE_END					(_COMM_PAGE_BASE_ADDRESS+0x1700)// end of commpage area

#ifdef __ASSEMBLER__
#ifdef __COMM_PAGE_SYMBOLS

#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address)		\
				.org	(symbol_address - _COMM_PAGE_BASE_ADDRESS) @\
symbol_name: nop

	.text		// Required to make a well behaved symbol file

	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap32, _COMM_PAGE_COMPARE_AND_SWAP32)
	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap64, _COMM_PAGE_COMPARE_AND_SWAP64)
	CREATE_COMM_PAGE_SYMBOL(___atomic_enqueue, _COMM_PAGE_ENQUEUE)
	CREATE_COMM_PAGE_SYMBOL(___atomic_dequeue, _COMM_PAGE_DEQUEUE)
	CREATE_COMM_PAGE_SYMBOL(___memory_barrier, _COMM_PAGE_MEMORY_BARRIER)
	CREATE_COMM_PAGE_SYMBOL(___atomic_add32, _COMM_PAGE_ATOMIC_ADD32)
	CREATE_COMM_PAGE_SYMBOL(___atomic_add64, _COMM_PAGE_ATOMIC_ADD64)
	CREATE_COMM_PAGE_SYMBOL(___mach_absolute_time, _COMM_PAGE_ABSOLUTE_TIME)
	CREATE_COMM_PAGE_SYMBOL(___spin_lock_try, _COMM_PAGE_SPINLOCK_TRY)
	CREATE_COMM_PAGE_SYMBOL(___spin_lock, _COMM_PAGE_SPINLOCK_LOCK)
	CREATE_COMM_PAGE_SYMBOL(___spin_unlock, _COMM_PAGE_SPINLOCK_UNLOCK)
	CREATE_COMM_PAGE_SYMBOL(___pthread_getspecific, _COMM_PAGE_PTHREAD_GETSPECIFIC)
	CREATE_COMM_PAGE_SYMBOL(___gettimeofday, _COMM_PAGE_GETTIMEOFDAY)
	CREATE_COMM_PAGE_SYMBOL(___sys_dcache_flush, _COMM_PAGE_FLUSH_DCACHE)
	CREATE_COMM_PAGE_SYMBOL(___sys_icache_invalidate, _COMM_PAGE_FLUSH_ICACHE)
	CREATE_COMM_PAGE_SYMBOL(___pthread_self, _COMM_PAGE_PTHREAD_SELF)
	CREATE_COMM_PAGE_SYMBOL(___spin_lock_relinquish, _COMM_PAGE_RELINQUISH)
	CREATE_COMM_PAGE_SYMBOL(___bzero, _COMM_PAGE_BZERO)
	CREATE_COMM_PAGE_SYMBOL(___bcopy, _COMM_PAGE_BCOPY)
	CREATE_COMM_PAGE_SYMBOL(___memcpy, _COMM_PAGE_MEMCPY)
//	CREATE_COMM_PAGE_SYMBOL(___memmove, _COMM_PAGE_MEMMOVE)
	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap32b, _COMM_PAGE_COMPARE_AND_SWAP32B)
	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap64b, _COMM_PAGE_COMPARE_AND_SWAP64B)
    CREATE_COMM_PAGE_SYMBOL(___memset_pattern, _COMM_PAGE_MEMSET_PATTERN)
	CREATE_COMM_PAGE_SYMBOL(___bigcopy, _COMM_PAGE_BIGCOPY)
	
	CREATE_COMM_PAGE_SYMBOL(___end_comm_page, _COMM_PAGE_END)

	.data		// Required to make a well behaved symbol file
	.long	0	// Required to make a well behaved symbol file

#endif /* __COMM_PAGE_SYMBOLS */
#endif /* __ASSEMBLER__ */

#endif /* _PPC_CPU_CAPABILITIES_H */
#endif /* PRIVATE */
Commit	Line	Data
43866e37	1	/*
0c530ab8	2	* Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved.
43866e37	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
43866e37	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
43866e37	21	*/
91447636	22	#ifdef PRIVATE
43866e37 A	23
	24	#ifndef _PPC_CPU_CAPABILITIES_H
	25	#define _PPC_CPU_CAPABILITIES_H
	26
43866e37 A	27	/* _cpu_capabilities
	28	*
	29	* This is the authoritative way to determine from user mode what
	30	* implementation-specific processor features are available.
91447636	31	* This API is only supported for Apple internal use.
43866e37 A	32	*/
	33
	34	#ifndef __ASSEMBLER__
	35
	36	extern int _cpu_capabilities;
	37
	38	#endif /* __ASSEMBLER__ */
	39
	40	/* Bit definitions for _cpu_capabilities: */
	41
	42	#define kHasAltivec 0x00000001
	43	#define k64Bit 0x00000002 // 64-bit GPRs
	44	#define kCache32 0x00000004 // cache line size is 32 bytes
	45	#define kCache64 0x00000008
	46	#define kCache128 0x00000010
	47	#define kDcbaRecommended 0x00000020 // PPC: dcba is available and recommended
91447636	48	#define kDcbaAvailable 0x00000040 // PPC: dcba is available (but may or may not be recommended)
43866e37	49	#define kDataStreamsRecommended 0x00000080 // PPC: dst, dstt, dstst, dss, and dssall instructions available and recommended
91447636	50	#define kDataStreamsAvailable 0x00000100 // PPC: dst, dstt, dstst, dss, and dssall instructions available (may or may not be rec'd)
43866e37	51	#define kDcbtStreamsRecommended 0x00000200 // PPC: enhanced dcbt instruction available and recommended
91447636 A	52	#define kDcbtStreamsAvailable 0x00000400 // PPC: enhanced dcbt instruction available (but may or may not be recommended)
91447636 A	53	#define kFastThreadLocalStorage 0x00000800 // TLS ptr is kept in a user-mode-readable register
43866e37 A	54
	55	#define kUP 0x00008000 // set if (kNumCPUs == 1)
	56	#define kNumCPUs 0x00FF0000 // number of CPUs (see _NumCPUs() below)
	57
	58	#define kNumCPUsShift 16 // see _NumCPUs() below
	59
	60	#define kHasGraphicsOps 0x08000000 // PPC: has fres, frsqrte, and fsel instructions
	61	#define kHasStfiwx 0x10000000 // PPC: has stfiwx instruction
	62	#define kHasFsqrt 0x20000000 // PPC: has fsqrt and fsqrts instructions
	63
	64	#ifndef __ASSEMBLER__
	65
	66	static __inline__ int _NumCPUs( void ) { return (_cpu_capabilities & kNumCPUs) >> kNumCPUsShift; }
	67
	68	#endif /* __ASSEMBLER__ */
55e303ae A	69
	70
	71	/*
	72	* The shared kernel/user "comm page(s)":
	73	*
	74	* The last eight pages of every address space are reserved for the kernel/user
	75	* "comm area". Because they can be addressed via a sign-extended 16-bit field,
	76	* it is particularly efficient to access code or data in the comm area with
	77	* absolute branches (ba, bla, bca) or absolute load/stores ("lwz r0,-4096(0)").
	78	* Because the comm area can be reached from anywhere, dyld is not needed.
	79	* Although eight pages are reserved, presently only two are populated and mapped.
	80	*
	81	* Routines on the comm page(s) can be thought of as the firmware for extended processor
	82	* instructions, whose opcodes are special forms of "bla". Ie, they are cpu
	83	* capabilities. During system initialization, the kernel populates the comm page with
	84	* code customized for the particular processor and platform.
	85	*
	86	* Because Mach VM cannot map the last page of an address space, the max length of
	87	* the comm area is seven pages.
	88	*/
	89
	90	#define _COMM_PAGE_BASE_ADDRESS (-8*4096) // start at page -8, ie 0xFFFF8000
	91	#define _COMM_PAGE_AREA_LENGTH ( 7*4096) // reserved length of entire comm area
	92	#define _COMM_PAGE_AREA_USED ( 2*4096) // we use two pages so far
91447636	93
0c530ab8 A	94	/* The following set of definitions are used in the kernel, which needs to distinguish between
	95	* the 32 and 64-bit commpage addresses and lengths. On PPC they are the same, but on Imtel
	96	* they are not.
	97	*/
	98	#define _COMM_PAGE32_BASE_ADDRESS ( _COMM_PAGE_BASE_ADDRESS )
	99	#define _COMM_PAGE64_BASE_ADDRESS ( _COMM_PAGE_BASE_ADDRESS )
	100	#define _COMM_PAGE32_AREA_LENGTH ( _COMM_PAGE_AREA_LENGTH )
	101	#define _COMM_PAGE64_AREA_LENGTH ( _COMM_PAGE_AREA_LENGTH )
	102	#define _COMM_PAGE32_AREA_USED ( _COMM_PAGE_AREA_USED )
	103	#define _COMM_PAGE64_AREA_USED ( _COMM_PAGE_AREA_USED )
	104
91447636 A	105	/* The Objective-C runtime fixed address page to optimize message dispatch */
91447636 A	106	#define _OBJC_PAGE_BASE_ADDRESS (-20*4096) // start at page -20, ie 0xFFFEC000
55e303ae A	107
	108	/* data in the comm page */
	109
	110	#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_BASE_ADDRESS+0x000) // first few bytes are a signature
	111	#define _COMM_PAGE_VERSION (_COMM_PAGE_BASE_ADDRESS+0x01E) // 16-bit version#
91447636	112	#define _COMM_PAGE_THIS_VERSION 2 // this is version 2 of the commarea format
55e303ae A	113
	114	#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_BASE_ADDRESS+0x020) // mirror of extern int _cpu_capabilities
	115	#define _COMM_PAGE_NCPUS (_COMM_PAGE_BASE_ADDRESS+0x021) // number of configured CPUs
	116	#define _COMM_PAGE_ALTIVEC (_COMM_PAGE_BASE_ADDRESS+0x024) // nonzero if Altivec available
	117	#define _COMM_PAGE_64_BIT (_COMM_PAGE_BASE_ADDRESS+0x025) // nonzero if 64-bit processor
	118	#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_BASE_ADDRESS+0x026) // cache line size (16-bit field)
	119
91447636	120	#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_BASE_ADDRESS+0x028) // 24 unused bytes
55e303ae A	121
	122	#define _COMM_PAGE_2_TO_52 (_COMM_PAGE_BASE_ADDRESS+0x040) // double float constant 2**52
	123	#define _COMM_PAGE_10_TO_6 (_COMM_PAGE_BASE_ADDRESS+0x048) // double float constant 10**6
91447636 A	124	#define _COMM_PAGE_MAGIC_FE (_COMM_PAGE_BASE_ADDRESS+0x050) // magic constant 0xFEFEFEFEFEFEFEFF (to find 0s)
91447636 A	125	#define _COMM_PAGE_MAGIC_80 (_COMM_PAGE_BASE_ADDRESS+0x058) // magic constant 0x8080808080808080 (to find 0s)
55e303ae A	126
	127	#define _COMM_PAGE_TIMEBASE (_COMM_PAGE_BASE_ADDRESS+0x060) // used by gettimeofday()
	128	#define _COMM_PAGE_TIMESTAMP (_COMM_PAGE_BASE_ADDRESS+0x068) // used by gettimeofday()
	129	#define _COMM_PAGE_SEC_PER_TICK (_COMM_PAGE_BASE_ADDRESS+0x070) // used by gettimeofday()
	130
55e303ae A	131	/* jump table (bla to this address, which may be a branch to the actual code somewhere else) */
	132	/* When new jump table entries are added, corresponding symbols should be added below */
	133
91447636 A	134	#define _COMM_PAGE_COMPARE_AND_SWAP32 (_COMM_PAGE_BASE_ADDRESS+0x080) // compare-and-swap word, no barrier
	135	#define _COMM_PAGE_COMPARE_AND_SWAP64 (_COMM_PAGE_BASE_ADDRESS+0x0c0) // compare-and-swap doubleword, no barrier
	136	#define _COMM_PAGE_ENQUEUE (_COMM_PAGE_BASE_ADDRESS+0x100) // enqueue
	137	#define _COMM_PAGE_DEQUEUE (_COMM_PAGE_BASE_ADDRESS+0x140) // dequeue
	138	#define _COMM_PAGE_MEMORY_BARRIER (_COMM_PAGE_BASE_ADDRESS+0x180) // memory barrier
	139	#define _COMM_PAGE_ATOMIC_ADD32 (_COMM_PAGE_BASE_ADDRESS+0x1a0) // add atomic word
	140	#define _COMM_PAGE_ATOMIC_ADD64 (_COMM_PAGE_BASE_ADDRESS+0x1c0) // add atomic doubleword
	141
	142	#define _COMM_PAGE_UNUSED3 (_COMM_PAGE_BASE_ADDRESS+0x1e0) // 32 unused bytes
	143
55e303ae A	144	#define _COMM_PAGE_ABSOLUTE_TIME (_COMM_PAGE_BASE_ADDRESS+0x200) // mach_absolute_time()
	145	#define _COMM_PAGE_SPINLOCK_TRY (_COMM_PAGE_BASE_ADDRESS+0x220) // spinlock_try()
	146	#define _COMM_PAGE_SPINLOCK_LOCK (_COMM_PAGE_BASE_ADDRESS+0x260) // spinlock_lock()
	147	#define _COMM_PAGE_SPINLOCK_UNLOCK (_COMM_PAGE_BASE_ADDRESS+0x2a0) // spinlock_unlock()
	148	#define _COMM_PAGE_PTHREAD_GETSPECIFIC (_COMM_PAGE_BASE_ADDRESS+0x2c0) // pthread_getspecific()
	149	#define _COMM_PAGE_GETTIMEOFDAY (_COMM_PAGE_BASE_ADDRESS+0x2e0) // used by gettimeofday()
	150	#define _COMM_PAGE_FLUSH_DCACHE (_COMM_PAGE_BASE_ADDRESS+0x4e0) // sys_dcache_flush()
	151	#define _COMM_PAGE_FLUSH_ICACHE (_COMM_PAGE_BASE_ADDRESS+0x520) // sys_icache_invalidate()
	152	#define _COMM_PAGE_PTHREAD_SELF (_COMM_PAGE_BASE_ADDRESS+0x580) // pthread_self()
91447636	153
55e303ae	154	#define _COMM_PAGE_UNUSED4 (_COMM_PAGE_BASE_ADDRESS+0x5a0) // 32 unused bytes
91447636	155
55e303ae A	156	#define _COMM_PAGE_RELINQUISH (_COMM_PAGE_BASE_ADDRESS+0x5c0) // used by spinlocks
	157
	158	#define _COMM_PAGE_UNUSED5 (_COMM_PAGE_BASE_ADDRESS+0x5e0) // 32 unused bytes
	159
	160	#define _COMM_PAGE_BZERO (_COMM_PAGE_BASE_ADDRESS+0x600) // bzero()
	161	#define _COMM_PAGE_BCOPY (_COMM_PAGE_BASE_ADDRESS+0x780) // bcopy()
	162	#define _COMM_PAGE_MEMCPY (_COMM_PAGE_BASE_ADDRESS+0x7a0) // memcpy()
	163	#define _COMM_PAGE_MEMMOVE (_COMM_PAGE_BASE_ADDRESS+0x7a0) // memmove()
	164
91447636 A	165	#define _COMM_PAGE_COMPARE_AND_SWAP32B (_COMM_PAGE_BASE_ADDRESS+0xf80) // compare-and-swap word w barrier
91447636 A	166	#define _COMM_PAGE_COMPARE_AND_SWAP64B (_COMM_PAGE_BASE_ADDRESS+0xfc0) // compare-and-swap doubleword w barrier
55e303ae	167
91447636 A	168	#define _COMM_PAGE_MEMSET_PATTERN (_COMM_PAGE_BASE_ADDRESS+0x1000)// used by nonzero memset()
91447636 A	169	#define _COMM_PAGE_BIGCOPY (_COMM_PAGE_BASE_ADDRESS+0x1140)// very-long-operand copies
55e303ae	170
91447636	171	#define _COMM_PAGE_END (_COMM_PAGE_BASE_ADDRESS+0x1700)// end of commpage area
55e303ae A	172
	173	#ifdef __ASSEMBLER__
	174	#ifdef __COMM_PAGE_SYMBOLS
	175
	176	#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \
	177	.org (symbol_address - _COMM_PAGE_BASE_ADDRESS) @\
	178	symbol_name: nop
	179
	180	.text // Required to make a well behaved symbol file
	181
91447636 A	182	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap32, _COMM_PAGE_COMPARE_AND_SWAP32)
	183	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap64, _COMM_PAGE_COMPARE_AND_SWAP64)
	184	CREATE_COMM_PAGE_SYMBOL(___atomic_enqueue, _COMM_PAGE_ENQUEUE)
	185	CREATE_COMM_PAGE_SYMBOL(___atomic_dequeue, _COMM_PAGE_DEQUEUE)
	186	CREATE_COMM_PAGE_SYMBOL(___memory_barrier, _COMM_PAGE_MEMORY_BARRIER)
	187	CREATE_COMM_PAGE_SYMBOL(___atomic_add32, _COMM_PAGE_ATOMIC_ADD32)
	188	CREATE_COMM_PAGE_SYMBOL(___atomic_add64, _COMM_PAGE_ATOMIC_ADD64)
55e303ae A	189	CREATE_COMM_PAGE_SYMBOL(___mach_absolute_time, _COMM_PAGE_ABSOLUTE_TIME)
	190	CREATE_COMM_PAGE_SYMBOL(___spin_lock_try, _COMM_PAGE_SPINLOCK_TRY)
	191	CREATE_COMM_PAGE_SYMBOL(___spin_lock, _COMM_PAGE_SPINLOCK_LOCK)
	192	CREATE_COMM_PAGE_SYMBOL(___spin_unlock, _COMM_PAGE_SPINLOCK_UNLOCK)
	193	CREATE_COMM_PAGE_SYMBOL(___pthread_getspecific, _COMM_PAGE_PTHREAD_GETSPECIFIC)
	194	CREATE_COMM_PAGE_SYMBOL(___gettimeofday, _COMM_PAGE_GETTIMEOFDAY)
	195	CREATE_COMM_PAGE_SYMBOL(___sys_dcache_flush, _COMM_PAGE_FLUSH_DCACHE)
	196	CREATE_COMM_PAGE_SYMBOL(___sys_icache_invalidate, _COMM_PAGE_FLUSH_ICACHE)
	197	CREATE_COMM_PAGE_SYMBOL(___pthread_self, _COMM_PAGE_PTHREAD_SELF)
	198	CREATE_COMM_PAGE_SYMBOL(___spin_lock_relinquish, _COMM_PAGE_RELINQUISH)
	199	CREATE_COMM_PAGE_SYMBOL(___bzero, _COMM_PAGE_BZERO)
	200	CREATE_COMM_PAGE_SYMBOL(___bcopy, _COMM_PAGE_BCOPY)
	201	CREATE_COMM_PAGE_SYMBOL(___memcpy, _COMM_PAGE_MEMCPY)
	202	// CREATE_COMM_PAGE_SYMBOL(___memmove, _COMM_PAGE_MEMMOVE)
91447636 A	203	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap32b, _COMM_PAGE_COMPARE_AND_SWAP32B)
	204	CREATE_COMM_PAGE_SYMBOL(___compare_and_swap64b, _COMM_PAGE_COMPARE_AND_SWAP64B)
	205	CREATE_COMM_PAGE_SYMBOL(___memset_pattern, _COMM_PAGE_MEMSET_PATTERN)
55e303ae	206	CREATE_COMM_PAGE_SYMBOL(___bigcopy, _COMM_PAGE_BIGCOPY)
91447636	207
55e303ae A	208	CREATE_COMM_PAGE_SYMBOL(___end_comm_page, _COMM_PAGE_END)
	209
	210	.data // Required to make a well behaved symbol file
	211	.long 0 // Required to make a well behaved symbol file
	212
	213	#endif /* __COMM_PAGE_SYMBOLS */
	214	#endif /* __ASSEMBLER__ */
	215
43866e37	216	#endif /* _PPC_CPU_CAPABILITIES_H */
91447636	217	#endif /* PRIVATE */