X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..ff6e181ae92fc6f1e89841290f461d1f2f9badd9:/osfmk/i386/cpu_capabilities.h diff --git a/osfmk/i386/cpu_capabilities.h b/osfmk/i386/cpu_capabilities.h index bd0297633..d6b380bec 100644 --- a/osfmk/i386/cpu_capabilities.h +++ b/osfmk/i386/cpu_capabilities.h @@ -1,10 +1,8 @@ /* - * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2003-2005 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. - * * 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 @@ -22,38 +20,176 @@ * * @APPLE_LICENSE_HEADER_END@ */ +#ifdef PRIVATE #ifndef _I386_CPU_CAPABILITIES_H #define _I386_CPU_CAPABILITIES_H -/* Sadly, some clients of this interface misspell __APPLE_API_PRIVATE. - * To avoid breaking them, we accept the incorrect _APPLE_API_PRIVATE. - */ -#ifdef _APPLE_API_PRIVATE -#ifndef __APPLE_API_PRIVATE -#define __APPLE_API_PRIVATE -#endif /* __APPLE_API_PRIVATE */ -#endif /* _APPLE_API_PRIVATE */ - -#ifndef __APPLE_API_PRIVATE -#error cpu_capabilities.h is for Apple Internal use only -#else /* __APPLE_API_PRIVATE */ - -/* _cpu_capabilities - * +#ifndef __ASSEMBLER__ +#include +#endif + +/* * This is the authoritative way to determine from user mode what * implementation-specific processor features are available. * This API only supported for Apple internal use. * */ +/* Bit definitions for _cpu_capabilities: */ + +#define kHasMMX 0x00000001 +#define kHasSSE 0x00000002 +#define kHasSSE2 0x00000004 +#define kHasSSE3 0x00000008 +#define kCache32 0x00000010 // cache line size is 32 bytes +#define kCache64 0x00000020 +#define kCache128 0x00000040 +#define kFastThreadLocalStorage 0x00000080 // 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 + #ifndef __ASSEMBLER__ +#include + +__BEGIN_DECLS +extern int _get_cpu_capabilities( void ); +__END_DECLS + +inline static +int _NumCPUs( void ) +{ + return (_get_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". 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. + */ -extern int _cpu_capabilities; +#define _COMM_PAGE_AREA_LENGTH (19*4096) + // reserved length of entire comm area +#define _COMM_PAGE_BASE_ADDRESS (-20*4096) + // VM_MAX_ADDRESS-_COMM_PAGE_AREA_LENGTH +#define _COMM_PAGE_START_ADDRESS (-16*4096) + // VM_MAX_ADDRESS-_COMM_PAGE_AREA_LENGTH +#define _COMM_PAGE_SIGS_OFFSET 0x8000 + // offset to routine signatures -#endif +/* data in the comm page */ + +#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) // first few bytes are a signature +#define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) // 16-bit version# +#define _COMM_PAGE_THIS_VERSION 3 // version of the commarea format + +#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) // uint32_t _cpu_capabilities +#define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x021) // uint8_t number of configured CPUs +#define _COMM_PAGE_VECTOR_FLAVOR (_COMM_PAGE_START_ADDRESS+0x024) // uint8_t SSE/SSE2/SSE3 +#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) // uint16_t cache line size + +#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x030) // 16 unused bytes + +#define _COMM_PAGE_2_TO_52 (_COMM_PAGE_START_ADDRESS+0x040) // double float constant 2**52 +#define _COMM_PAGE_10_TO_6 (_COMM_PAGE_START_ADDRESS+0x048) // double float constant 10**6 + +#define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x050) // 16 unused bytes + +#define _COMM_PAGE_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x060) // used by gettimeofday() +#define _COMM_PAGE_TIMESTAMP (_COMM_PAGE_START_ADDRESS+0x068) // used by gettimeofday() +#define _COMM_PAGE_SEC_PER_TICK (_COMM_PAGE_START_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 */ -/* Bit definitions for _cpu_capabilities: */ +#define _COMM_PAGE_COMPARE_AND_SWAP32 (_COMM_PAGE_START_ADDRESS+0x080) // compare-and-swap word +#define _COMM_PAGE_COMPARE_AND_SWAP64 (_COMM_PAGE_START_ADDRESS+0x0c0) // compare-and-swap doubleword +#define _COMM_PAGE_ENQUEUE (_COMM_PAGE_START_ADDRESS+0x100) // enqueue +#define _COMM_PAGE_DEQUEUE (_COMM_PAGE_START_ADDRESS+0x140) // dequeue +#define _COMM_PAGE_MEMORY_BARRIER (_COMM_PAGE_START_ADDRESS+0x180) // add atomic doubleword +#define _COMM_PAGE_ATOMIC_ADD32 (_COMM_PAGE_START_ADDRESS+0x1a0) // add atomic word +#define _COMM_PAGE_ATOMIC_ADD64 (_COMM_PAGE_START_ADDRESS+0x1c0) // add atomic doubleword + +#define _COMM_PAGE_NANOTIME_INFO (_COMM_PAGE_START_ADDRESS+0x1e0) // 32 bytes used by nanotime() + +#define _COMM_PAGE_ABSOLUTE_TIME (_COMM_PAGE_START_ADDRESS+0x200) // mach_absolute_time() +#define _COMM_PAGE_SPINLOCK_TRY (_COMM_PAGE_START_ADDRESS+0x220) // spinlock_try() +#define _COMM_PAGE_SPINLOCK_LOCK (_COMM_PAGE_START_ADDRESS+0x260) // spinlock_lock() +#define _COMM_PAGE_SPINLOCK_UNLOCK (_COMM_PAGE_START_ADDRESS+0x2a0) // spinlock_unlock() +#define _COMM_PAGE_PTHREAD_GETSPECIFIC (_COMM_PAGE_START_ADDRESS+0x2c0) // pthread_getspecific() +#define _COMM_PAGE_GETTIMEOFDAY (_COMM_PAGE_START_ADDRESS+0x2e0) // used by gettimeofday() +#define _COMM_PAGE_FLUSH_DCACHE (_COMM_PAGE_START_ADDRESS+0x4e0) // sys_dcache_flush() +#define _COMM_PAGE_FLUSH_ICACHE (_COMM_PAGE_START_ADDRESS+0x520) // sys_icache_invalidate() +#define _COMM_PAGE_PTHREAD_SELF (_COMM_PAGE_START_ADDRESS+0x580) // pthread_self() +#define _COMM_PAGE_UNUSED4 (_COMM_PAGE_START_ADDRESS+0x5a0) // 32 unused bytes +#define _COMM_PAGE_RELINQUISH (_COMM_PAGE_START_ADDRESS+0x5c0) // used by spinlocks + +#define _COMM_PAGE_BTS (_COMM_PAGE_START_ADDRESS+0x5e0) // bit test-and-set +#define _COMM_PAGE_BTC (_COMM_PAGE_START_ADDRESS+0x5f0) // bit test-and-clear + +#define _COMM_PAGE_BZERO (_COMM_PAGE_START_ADDRESS+0x600) // bzero() +#define _COMM_PAGE_BCOPY (_COMM_PAGE_START_ADDRESS+0x780) // bcopy() +#define _COMM_PAGE_MEMCPY (_COMM_PAGE_START_ADDRESS+0x7a0) // memcpy() +#define _COMM_PAGE_MEMMOVE (_COMM_PAGE_START_ADDRESS+0x7a0) // memmove() + +#define _COMM_PAGE_NANOTIME (_COMM_PAGE_START_ADDRESS+0xF80) // nanotime() + +#define _COMM_PAGE_BIGCOPY (_COMM_PAGE_START_ADDRESS+0x1000)// very-long-operand copies + +#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0x1600)// end of common page + +#ifdef __ASSEMBLER__ +#ifdef __COMM_PAGE_SYMBOLS + +#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \ + .org (symbol_address - (_COMM_PAGE_BASE_ADDRESS & 0xFFFFE000)) ;\ +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(___bit_test_and_set, _COMM_PAGE_BTS) + CREATE_COMM_PAGE_SYMBOL(___bit_test_and_clear, _COMM_PAGE_BTC) + 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(___bigcopy, _COMM_PAGE_BIGCOPY) + CREATE_COMM_PAGE_SYMBOL(___nanotime, _COMM_PAGE_NANOTIME) + 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 /* __APPLE_API_PRIVATE */ #endif /* _I386_CPU_CAPABILITIES_H */ +#endif /* PRIVATE */