1/* 2 * Copyright (c) 2003-2009 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28#ifdef PRIVATE 29 30#ifndef _I386_CPU_CAPABILITIES_H 31#define _I386_CPU_CAPABILITIES_H 32 33#ifndef __ASSEMBLER__ 34#include <stdint.h> 35#endif 36 37/* 38 * This API only supported for Apple internal use. 39 */ 40 41/* Bit definitions for _cpu_capabilities: */ 42 43#define kHasMMX 0x00000001 44#define kHasSSE 0x00000002 45#define kHasSSE2 0x00000004 46#define kHasSSE3 0x00000008 47#define kCache32 0x00000010 /* cache line size is 32 bytes */ 48#define kCache64 0x00000020 49#define kCache128 0x00000040 50#define kFastThreadLocalStorage 0x00000080 /* TLS ptr is kept in a user-mode-readable register */ 51#define kHasSupplementalSSE3 0x00000100 52#define k64Bit 0x00000200 /* processor supports EM64T (not what mode you're running in) */ 53#define kHasSSE4_1 0x00000400 54#define kHasSSE4_2 0x00000800 55#define kHasAES 0x00001000 56#define kInOrderPipeline 0x00002000 57#define kSlow 0x00004000 /* tsc < nanosecond */ 58#define kUP 0x00008000 /* set if (kNumCPUs == 1) */ 59#define kNumCPUs 0x00FF0000 /* number of CPUs (see _NumCPUs() below) */ 60#define kNumCPUsShift 16 61#define kHasAVX1_0 0x01000000 62#define kHasRDRAND 0x02000000 63#define kHasF16C 0x04000000 64#define kHasENFSTRG 0x08000000 65#define kHasFMA 0x10000000 66#define kHasAVX2_0 0x20000000 67#define kHasBMI1 0x40000000 68#define kHasBMI2 0x80000000 69/* Extending into 64-bits from here: */ 70#define kHasRTM 0x0000000100000000ULL 71#define kHasHLE 0x0000000200000000ULL 72 73 74#ifndef __ASSEMBLER__ 75#include <sys/cdefs.h> 76 77__BEGIN_DECLS 78extern uint64_t _get_cpu_capabilities( void ); 79__END_DECLS 80 81inline static 82int _NumCPUs( void ) 83{ 84 return (int) (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift; 85} 86 87#endif /* __ASSEMBLER__ */ 88 89/* The following macro is used to generate the 64-bit commpage address for a given 90 * routine, based on its 32-bit address. This is used in the kernel to compile 91 * the 64-bit commpage. Since the kernel can be a 32-bit object, cpu_capabilities.h 92 * only defines the 32-bit address. 93 */ 94#define _COMM_PAGE_32_TO_64( ADDRESS ) ( ADDRESS + _COMM_PAGE64_START_ADDRESS - _COMM_PAGE32_START_ADDRESS ) 95 96 97/* 98 * The shared kernel/user "comm page(s)": 99 * 100 * The last several pages of every address space are reserved for the kernel/user 101 * "comm area". During system initialization, the kernel populates the comm pages with 102 * code customized for the particular processor and platform. 103 * 104 * Because Mach VM cannot map the last page of an address space, we don't use it. 105 */ 106 107#define _COMM_PAGE32_AREA_LENGTH ( 1 * 4096 ) /* reserved length of entire comm area */ 108#define _COMM_PAGE32_BASE_ADDRESS ( 0xffff0000 ) /* base address of allocated memory */ 109#define _COMM_PAGE32_START_ADDRESS ( _COMM_PAGE32_BASE_ADDRESS ) /* address traditional commpage code starts on */ 110#define _COMM_PAGE32_AREA_USED ( 1 * 4096 ) /* this is the amt actually allocated */ 111#define _COMM_PAGE32_SIGS_OFFSET 0x8000 /* offset to routine signatures */ 112 113#define _COMM_PAGE64_AREA_LENGTH ( 1 * 4096 ) /* reserved length of entire comm area (2MB) */ 114#ifdef __ASSEMBLER__ 115#define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000 ) /* base address of allocated memory */ 116#else /* __ASSEMBLER__ */ 117#define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000ULL ) /* base address of allocated memory */ 118#endif /* __ASSEMBLER__ */ 119#define _COMM_PAGE64_START_ADDRESS ( _COMM_PAGE64_BASE_ADDRESS ) /* address traditional commpage code starts on */ 120#define _COMM_PAGE64_AREA_USED ( 1 * 4096 ) /* this is the amt actually populated */ 121 122/* no need for an Objective-C area on Intel */ 123#define _COMM_PAGE32_OBJC_SIZE 0ULL 124#define _COMM_PAGE32_OBJC_BASE 0ULL 125#define _COMM_PAGE64_OBJC_SIZE 0ULL 126#define _COMM_PAGE64_OBJC_BASE 0ULL 127 128#ifdef KERNEL_PRIVATE 129 130/* Inside the kernel, comm page addresses are absolute addresses 131 * assuming they are a part of the 32-bit commpage. They may 132 * be mapped somewhere else, especially for the 64-bit commpage. 133 */ 134#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS 135#define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET 136 137#else /* !KERNEL_PRIVATE */ 138 139#if defined(__i386__) 140 141#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE32_AREA_LENGTH 142#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS 143#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS 144#define _COMM_PAGE_AREA_USED _COMM_PAGE32_AREA_USED 145#define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET 146 147#elif defined(__x86_64__) 148 149#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE64_AREA_LENGTH 150#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS 151#define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_START_ADDRESS 152#define _COMM_PAGE_AREA_USED _COMM_PAGE64_AREA_USED 153 154#else 155#error architecture not supported 156#endif 157 158#endif /* !KERNEL_PRIVATE */ 159 160/* data in the comm page */ 161 162#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) /* first 16 bytes are a signature */ 163#define _COMM_PAGE_SIGNATURELEN (0x10) 164#define _COMM_PAGE_CPU_CAPABILITIES64 (_COMM_PAGE_START_ADDRESS+0x010) /* uint64_t _cpu_capabilities */ 165#define _COMM_PAGE_UNUSED (_COMM_PAGE_START_ADDRESS+0x018) /* 6 unused bytes */ 166#define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) /* 16-bit version# */ 167#define _COMM_PAGE_THIS_VERSION 13 /* in ver 13, _COMM_PAGE_NT_SHIFT defaults to 0 (was 32) */ 168 169#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) /* uint32_t _cpu_capabilities (retained for compatibility) */ 170#define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) /* uint8_t number of configured CPUs (hw.logicalcpu at boot time) */ 171#define _COMM_PAGE_UNUSED0 (_COMM_PAGE_START_ADDRESS+0x024) /* 2 unused bytes, previouly reserved for expansion of cpu_capabilities */ 172#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) /* uint16_t cache line size */ 173 174#define _COMM_PAGE_SCHED_GEN (_COMM_PAGE_START_ADDRESS+0x028) /* uint32_t scheduler generation number (count of pre-emptions) */ 175#define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x02c) /* uint32_t copy of vm_memory_pressure */ 176#define _COMM_PAGE_SPIN_COUNT (_COMM_PAGE_START_ADDRESS+0x030) /* uint32_t max spin count for mutex's */ 177 178#define _COMM_PAGE_ACTIVE_CPUS (_COMM_PAGE_START_ADDRESS+0x034) /* uint8_t number of active CPUs (hw.activecpu) */ 179#define _COMM_PAGE_PHYSICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x035) /* uint8_t number of physical CPUs (hw.physicalcpu_max) */ 180#define _COMM_PAGE_LOGICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x036) /* uint8_t number of logical CPUs (hw.logicalcpu_max) */ 181#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x037) /* 1 unused bytes */ 182#define _COMM_PAGE_MEMORY_SIZE (_COMM_PAGE_START_ADDRESS+0x038) /* uint64_t max memory size */ 183 184#define _COMM_PAGE_CPUFAMILY (_COMM_PAGE_START_ADDRESS+0x040) /* uint32_t hw.cpufamily, x86*/ 185#define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x044) /* [0x44,0x50) unused */ 186 187#define _COMM_PAGE_TIME_DATA_START (_COMM_PAGE_START_ADDRESS+0x050) /* base of offsets below (_NT_SCALE etc) */ 188#define _COMM_PAGE_NT_TSC_BASE (_COMM_PAGE_START_ADDRESS+0x050) /* used by nanotime() */ 189#define _COMM_PAGE_NT_SCALE (_COMM_PAGE_START_ADDRESS+0x058) /* used by nanotime() */ 190#define _COMM_PAGE_NT_SHIFT (_COMM_PAGE_START_ADDRESS+0x05c) /* used by nanotime() */ 191#define _COMM_PAGE_NT_NS_BASE (_COMM_PAGE_START_ADDRESS+0x060) /* used by nanotime() */ 192#define _COMM_PAGE_NT_GENERATION (_COMM_PAGE_START_ADDRESS+0x068) /* used by nanotime() */ 193#define _COMM_PAGE_GTOD_GENERATION (_COMM_PAGE_START_ADDRESS+0x06c) /* used by gettimeofday() */ 194#define _COMM_PAGE_GTOD_NS_BASE (_COMM_PAGE_START_ADDRESS+0x070) /* used by gettimeofday() */ 195#define _COMM_PAGE_GTOD_SEC_BASE (_COMM_PAGE_START_ADDRESS+0x078) /* used by gettimeofday() */ 196 197#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0xfff) /* end of common page */ 198 199/* Warning: kernel commpage.h has a matching c typedef for the following. They must be kept in sync. */ 200/* These offsets are from _COMM_PAGE_TIME_DATA_START */ 201 202#define _NT_TSC_BASE 0 203#define _NT_SCALE 8 204#define _NT_SHIFT 12 205#define _NT_NS_BASE 16 206#define _NT_GENERATION 24 207#define _GTOD_GENERATION 28 208#define _GTOD_NS_BASE 32 209#define _GTOD_SEC_BASE 40 210 211 /* jump table (jmp to this address, which may be a branch to the actual code somewhere else) */ 212 /* When new jump table entries are added, corresponding symbols should be added below */ 213 /* New slots should be allocated with at least 16-byte alignment. Some like bcopy require */ 214 /* 32-byte alignment, and should be aligned as such in the assembly source before they are relocated */ 215#define _COMM_PAGE_TEXT_START (_COMM_PAGE_START_ADDRESS+0x1000) 216#define _COMM_PAGE32_TEXT_START (_COMM_PAGE32_BASE_ADDRESS+0x1000) /* start of text section */ 217#define _COMM_PAGE64_TEXT_START (_COMM_PAGE64_BASE_ADDRESS+0x1000) 218#define _COMM_PAGE_TEXT_AREA_USED ( 1 * 4096 ) 219#define _COMM_PAGE_TEXT_AREA_LENGTH ( 1 * 4096 ) 220#define _PFZ32_SLIDE_RANGE ( 14 ) /* pages between 0xfffff000 and _COMM_PAGE32_TEXT_START */ 221#define _PFZ64_SLIDE_RANGE ( 510 ) /* pages between 0x00007ffffffff000 and _COMM_PAGE64_TEXT_START */ 222 223/* setup start offset in the commpage text region for each jump table entry 224 * the Comm Page Offset is shortened to _COMM_TEXT_[label]_OFFSET 225 */ 226 227#define _COMM_TEXT_PREEMPT_OFFSET (0x5a0) /* called from withing pfz */ 228#define _COMM_TEXT_BACKOFF_OFFSET (0x600) /* called from PFZ */ 229#define _COMM_TEXT_PFZ_START_OFFSET (0xc00) /* offset for Preemption Free Zone */ 230#define _COMM_TEXT_PFZ_ENQUEUE_OFFSET (0xc00) /* internal FIFO enqueue */ 231#define _COMM_TEXT_PFZ_DEQUEUE_OFFSET (0xc80) /* internal FIFO dequeue */ 232#define _COMM_TEXT_PFZ_MUTEX_LOCK_OFFSET (0xd00) /* internal pthread_mutex_lock() */ 233#define _COMM_TEXT_UNUSED_OFFSET (0xd80) /* end of routines in text page */ 234#define _COMM_TEXT_PFZ_END_OFFSET (0xfff) /* offset for end of PFZ */ 235 236 237#define _COMM_PAGE_PREEMPT (_COMM_PAGE_TEXT_START+_COMM_TEXT_PREEMPT_OFFSET) 238#define _COMM_PAGE_BACKOFF (_COMM_PAGE_TEXT_START+_COMM_TEXT_BACKOFF_OFFSET) 239 240#define _COMM_PAGE_PFZ_START (_COMM_PAGE_TEXT_START+_COMM_PAGE_PFZ_START_OFFSET) 241 242#define _COMM_PAGE_PFZ_ENQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_ENQUEUE_OFFSET) 243#define _COMM_PAGE_PFZ_DEQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_DEQUEUE_OFFSET) 244#define _COMM_PAGE_PFZ_MUTEX_LOCK (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_MUTEX_LOCK_OFFSET) 245 246#define _COMM_PAGE_UNUSED6 (_COMM_PAGE_TEXT_START+_COMM_TEXT_UNUSED_OFFSET) 247#define _COMM_PAGE_PFZ_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET) 248#define _COMM_PAGE_TEXT_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET) /* end of common text page */ 249 250/* _COMM_PAGE_COMPARE_AND_SWAP{32,64}B are not used on x86 and are 251 * maintained here for source compatability. These will be removed at 252 * some point, so don't go relying on them. */ 253#define _COMM_PAGE_COMPARE_AND_SWAP32B (_COMM_PAGE_START_ADDRESS+0xf80) /* compare-and-swap word w barrier */ 254#define _COMM_PAGE_COMPARE_AND_SWAP64B (_COMM_PAGE_START_ADDRESS+0xfc0) /* compare-and-swap doubleword w barrier */ 255 256#ifdef __ASSEMBLER__ 257#ifdef __COMM_PAGE_SYMBOLS 258 259#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \ 260 .org (symbol_address - (_COMM_PAGE_START_ADDRESS & 0xFFFFE000)) ;\ 261symbol_name: nop 262 263 .text /* Required to make a well behaved symbol file */ 264 265 CREATE_COMM_PAGE_SYMBOL(___preempt, _COMM_PAGE_PREEMPT) 266 CREATE_COMM_PAGE_SYMBOL(___backoff, _COMM_PAGE_BACKOFF) 267 CREATE_COMM_PAGE_SYMBOL(___pfz_enqueue, _COMM_PAGE_PFZ_ENQUEUE) 268 CREATE_COMM_PAGE_SYMBOL(___pfz_dequeue, _COMM_PAGE_PFZ_DEQUEUE) 269 CREATE_COMM_PAGE_SYMBOL(___pfz_mutex_lock, _COMM_PAGE_PFZ_MUTEX_LOCK) 270 CREATE_COMM_PAGE_SYMBOL(___end_comm_page, _COMM_PAGE_END) 271 272 .data /* Required to make a well behaved symbol file */ 273 .long 0 /* Required to make a well behaved symbol file */ 274 275#endif /* __COMM_PAGE_SYMBOLS */ 276#endif /* __ASSEMBLER__ */ 277 278#endif /* _I386_CPU_CAPABILITIES_H */ 279#endif /* PRIVATE */ 280