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30 #ifndef _I386_CPU_CAPABILITIES_H
31 #define _I386_CPU_CAPABILITIES_H
38 * This API only supported for Apple internal use.
41 /* Bit definitions for _cpu_capabilities: */
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 /* in-order execution */
57 #define kSlow 0x00004000 /* tsc < nanosecond */
58 #define kUP 0x00008000 /* set if (kNumCPUs == 1) */
59 #define kNumCPUs 0x00FF0000 /* number of CPUs (see _NumCPUs() below) */
61 #define kNumCPUsShift 16 /* see _NumCPUs() below */
64 #include <sys/cdefs.h>
67 extern int _get_cpu_capabilities( void );
73 return (_get_cpu_capabilities() & kNumCPUs
) >> kNumCPUsShift
;
76 #endif /* __ASSEMBLER__ */
80 * The shared kernel/user "comm page(s)":
82 * The last several pages of every address space are reserved for the kernel/user
83 * "comm area". During system initialization, the kernel populates the comm pages with
84 * code customized for the particular processor and platform.
86 * Because Mach VM cannot map the last page of an address space, we don't use it.
89 #define _COMM_PAGE32_AREA_LENGTH ( 19 * 4096 ) /* reserved length of entire comm area */
90 #define _COMM_PAGE32_BASE_ADDRESS ( 0xfffec000 ) /* base address of allocated memory, -20 pages */
91 #define _COMM_PAGE32_START_ADDRESS ( 0xffff0000 ) /* address traditional commpage code starts on, -16 pages */
92 #define _COMM_PAGE32_AREA_USED ( 19 * 4096 ) /* this is the amt actually allocated */
93 #define _COMM_PAGE32_SIGS_OFFSET 0x8000 /* offset to routine signatures */
95 #define _COMM_PAGE64_AREA_LENGTH ( 2 * 1024 * 1024 ) /* reserved length of entire comm area (2MB) */
96 #define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000ULL ) /* base address of allocated memory */
97 #define _COMM_PAGE64_START_ADDRESS ( _COMM_PAGE64_BASE_ADDRESS ) /* address traditional commpage code starts on */
98 #define _COMM_PAGE64_AREA_USED ( 2 * 4096 ) /* this is the amt actually populated */
100 /* no need for an Objective-C area on Intel */
101 #define _COMM_PAGE32_OBJC_SIZE 0ULL
102 #define _COMM_PAGE32_OBJC_BASE 0ULL
103 #define _COMM_PAGE64_OBJC_SIZE 0ULL
104 #define _COMM_PAGE64_OBJC_BASE 0ULL
106 #ifdef KERNEL_PRIVATE
108 /* Inside the kernel, comm page addresses are absolute addresses
109 * assuming they are a part of the 32-bit commpage. They may
110 * be mapped somewhere else, especially for the 64-bit commpage.
112 #define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS
113 #define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET
115 #else /* !KERNEL_PRIVATE */
117 #if defined(__i386__)
119 #define _COMM_PAGE_AREA_LENGTH _COMM_PAGE32_AREA_LENGTH
120 #define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS
121 #define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS
122 #define _COMM_PAGE_AREA_USED _COMM_PAGE32_AREA_USED
123 #define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET
125 #elif defined(__x86_64__)
127 #define _COMM_PAGE_AREA_LENGTH _COMM_PAGE64_AREA_LENGTH
128 #define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS
129 #define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_START_ADDRESS
130 #define _COMM_PAGE_AREA_USED _COMM_PAGE64_AREA_USED
133 #error architecture not supported
136 #endif /* !KERNEL_PRIVATE */
138 /* data in the comm page */
140 #define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) /* first few bytes are a signature */
141 #define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) /* 16-bit version# */
142 #define _COMM_PAGE_THIS_VERSION 11 /* version of the commarea format */
144 #define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) /* uint32_t _cpu_capabilities */
145 #define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) /* uint8_t number of configured CPUs */
146 #define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) /* uint16_t cache line size */
148 #define _COMM_PAGE_SCHED_GEN (_COMM_PAGE_START_ADDRESS+0x028) /* uint32_t scheduler generation number (count of pre-emptions) */
149 #define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x02c) /* uint32_t copy of vm_memory_pressure */
150 #define _COMM_PAGE_SPIN_COUNT (_COMM_PAGE_START_ADDRESS+0x030) /* uint32_t max spin count for mutex's */
152 #define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x034) /* 12 unused bytes */
154 #ifdef KERNEL_PRIVATE
156 /* slots defined in all cases, but commpage setup code must not populate for 64-bit commpage */
157 #define _COMM_PAGE_2_TO_52 (_COMM_PAGE_START_ADDRESS+0x040) /* double float constant 2**52 */
158 #define _COMM_PAGE_10_TO_6 (_COMM_PAGE_START_ADDRESS+0x048) /* double float constant 10**6 */
160 #else /* !KERNEL_PRIVATE */
162 #if defined(__i386__) /* following are not defined in 64-bit */
163 #define _COMM_PAGE_2_TO_52 (_COMM_PAGE_START_ADDRESS+0x040) /* double float constant 2**52 */
164 #define _COMM_PAGE_10_TO_6 (_COMM_PAGE_START_ADDRESS+0x048) /* double float constant 10**6 */
166 #define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x040) /* 16 unused bytes */
169 #endif /* !KERNEL_PRIVATE */
171 #define _COMM_PAGE_TIME_DATA_START (_COMM_PAGE_START_ADDRESS+0x050) /* base of offsets below (_NT_SCALE etc) */
172 #define _COMM_PAGE_NT_TSC_BASE (_COMM_PAGE_START_ADDRESS+0x050) /* used by nanotime() */
173 #define _COMM_PAGE_NT_SCALE (_COMM_PAGE_START_ADDRESS+0x058) /* used by nanotime() */
174 #define _COMM_PAGE_NT_SHIFT (_COMM_PAGE_START_ADDRESS+0x05c) /* used by nanotime() */
175 #define _COMM_PAGE_NT_NS_BASE (_COMM_PAGE_START_ADDRESS+0x060) /* used by nanotime() */
176 #define _COMM_PAGE_NT_GENERATION (_COMM_PAGE_START_ADDRESS+0x068) /* used by nanotime() */
177 #define _COMM_PAGE_GTOD_GENERATION (_COMM_PAGE_START_ADDRESS+0x06c) /* used by gettimeofday() */
178 #define _COMM_PAGE_GTOD_NS_BASE (_COMM_PAGE_START_ADDRESS+0x070) /* used by gettimeofday() */
179 #define _COMM_PAGE_GTOD_SEC_BASE (_COMM_PAGE_START_ADDRESS+0x078) /* used by gettimeofday() */
181 /* Warning: kernel commpage.h has a matching c typedef for the following. They must be kept in sync. */
182 /* These offsets are from _COMM_PAGE_TIME_DATA_START */
184 #define _NT_TSC_BASE 0
187 #define _NT_NS_BASE 16
188 #define _NT_GENERATION 24
189 #define _GTOD_GENERATION 28
190 #define _GTOD_NS_BASE 32
191 #define _GTOD_SEC_BASE 40
193 /* jump table (jmp to this address, which may be a branch to the actual code somewhere else) */
194 /* When new jump table entries are added, corresponding symbols should be added below */
195 /* New slots should be allocated with at least 16-byte alignment. Some like bcopy require */
196 /* 32-byte alignment, and should be aligned as such in the assembly source before they are relocated */
197 #define _COMM_PAGE_COMPARE_AND_SWAP32 (_COMM_PAGE_START_ADDRESS+0x080) /* compare-and-swap word */
198 #define _COMM_PAGE_COMPARE_AND_SWAP64 (_COMM_PAGE_START_ADDRESS+0x0c0) /* compare-and-swap doubleword */
199 #define _COMM_PAGE_ENQUEUE (_COMM_PAGE_START_ADDRESS+0x100) /* enqueue */
200 #define _COMM_PAGE_DEQUEUE (_COMM_PAGE_START_ADDRESS+0x140) /* dequeue */
201 #define _COMM_PAGE_MEMORY_BARRIER (_COMM_PAGE_START_ADDRESS+0x180) /* memory barrier */
202 #define _COMM_PAGE_ATOMIC_ADD32 (_COMM_PAGE_START_ADDRESS+0x1a0) /* add atomic word */
203 #define _COMM_PAGE_ATOMIC_ADD64 (_COMM_PAGE_START_ADDRESS+0x1c0) /* add atomic doubleword */
205 #define _COMM_PAGE_CPU_NUMBER (_COMM_PAGE_START_ADDRESS+0x1e0) /* user-level cpu_number() */
207 #define _COMM_PAGE_ABSOLUTE_TIME (_COMM_PAGE_START_ADDRESS+0x200) /* mach_absolute_time() */
208 #define _COMM_PAGE_SPINLOCK_TRY (_COMM_PAGE_START_ADDRESS+0x220) /* spinlock_try() */
209 #define _COMM_PAGE_SPINLOCK_LOCK (_COMM_PAGE_START_ADDRESS+0x260) /* spinlock_lock() */
210 #define _COMM_PAGE_SPINLOCK_UNLOCK (_COMM_PAGE_START_ADDRESS+0x2a0) /* spinlock_unlock() */
211 #define _COMM_PAGE_PTHREAD_GETSPECIFIC (_COMM_PAGE_START_ADDRESS+0x2c0) /* pthread_getspecific() */
212 #define _COMM_PAGE_GETTIMEOFDAY (_COMM_PAGE_START_ADDRESS+0x2e0) /* used by gettimeofday() */
213 #define _COMM_PAGE_FLUSH_DCACHE (_COMM_PAGE_START_ADDRESS+0x4e0) /* sys_dcache_flush() */
214 #define _COMM_PAGE_FLUSH_ICACHE (_COMM_PAGE_START_ADDRESS+0x520) /* sys_icache_invalidate() */
215 #define _COMM_PAGE_PTHREAD_SELF (_COMM_PAGE_START_ADDRESS+0x580) /* pthread_self() */
217 #define _COMM_PAGE_PREEMPT (_COMM_PAGE_START_ADDRESS+0x5a0) /* used by PFZ code */
219 #define _COMM_PAGE_RELINQUISH (_COMM_PAGE_START_ADDRESS+0x5c0) /* used by spinlocks */
220 #define _COMM_PAGE_BTS (_COMM_PAGE_START_ADDRESS+0x5e0) /* bit test-and-set */
221 #define _COMM_PAGE_BTC (_COMM_PAGE_START_ADDRESS+0x5f0) /* bit test-and-clear */
223 #define _COMM_PAGE_BZERO (_COMM_PAGE_START_ADDRESS+0x600) /* bzero() */
224 #define _COMM_PAGE_BCOPY (_COMM_PAGE_START_ADDRESS+0x780) /* bcopy() */
225 #define _COMM_PAGE_MEMCPY (_COMM_PAGE_START_ADDRESS+0x7a0) /* memcpy() */
226 #define _COMM_PAGE_MEMMOVE (_COMM_PAGE_START_ADDRESS+0x7a0) /* memmove() */
227 #define _COMM_PAGE_BCOPY_END (_COMM_PAGE_START_ADDRESS+0xfff) /* used by rosetta */
229 #define _COMM_PAGE_MEMSET_PATTERN (_COMM_PAGE_START_ADDRESS+0x1000) /* used by nonzero memset() */
230 #define _COMM_PAGE_LONGCOPY (_COMM_PAGE_START_ADDRESS+0x1200) /* used by bcopy() for very long operands */
231 #define _COMM_PAGE_LONGCOPY_END (_COMM_PAGE_START_ADDRESS+0x15ff) /* used by rosetta */
233 #define _COMM_PAGE_BACKOFF (_COMM_PAGE_START_ADDRESS+0x1600) /* called from PFZ */
234 #define _COMM_PAGE_FIFO_ENQUEUE (_COMM_PAGE_START_ADDRESS+0x1680) /* FIFO enqueue */
235 #define _COMM_PAGE_FIFO_DEQUEUE (_COMM_PAGE_START_ADDRESS+0x16c0) /* FIFO dequeue */
236 #define _COMM_PAGE_NANOTIME (_COMM_PAGE_START_ADDRESS+0x1700) /* nanotime() */
237 #define _COMM_PAGE_MUTEX_LOCK (_COMM_PAGE_START_ADDRESS+0x1780) /* pthread_mutex_lock() */
239 #define _COMM_PAGE_UNUSED5 (_COMM_PAGE_START_ADDRESS+0x17e0) /* unused space for regular code up to 0x1c00 */
241 #define _COMM_PAGE_PFZ_START (_COMM_PAGE_START_ADDRESS+0x1c00) /* start of Preemption Free Zone */
243 #define _COMM_PAGE_PFZ_ENQUEUE (_COMM_PAGE_START_ADDRESS+0x1c00) /* internal routine for FIFO enqueue */
244 #define _COMM_PAGE_PFZ_DEQUEUE (_COMM_PAGE_START_ADDRESS+0x1c80) /* internal routine for FIFO dequeue */
245 #define _COMM_PAGE_PFZ_MUTEX_LOCK (_COMM_PAGE_START_ADDRESS+0x1d00) /* internal routine for pthread_mutex_lock() */
247 #define _COMM_PAGE_UNUSED6 (_COMM_PAGE_START_ADDRESS+0x1d80) /* unused space for PFZ code up to 0x1fff */
249 #define _COMM_PAGE_PFZ_END (_COMM_PAGE_START_ADDRESS+0x1fff) /* end of Preemption Free Zone */
251 #define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0x1fff) /* end of common page - insert new stuff here */
253 /* _COMM_PAGE_COMPARE_AND_SWAP{32,64}B are not used on x86 and are
254 * maintained here for source compatability. These will be removed at
255 * some point, so don't go relying on them. */
256 #define _COMM_PAGE_COMPARE_AND_SWAP32B (_COMM_PAGE_START_ADDRESS+0xf80) /* compare-and-swap word w barrier */
257 #define _COMM_PAGE_COMPARE_AND_SWAP64B (_COMM_PAGE_START_ADDRESS+0xfc0) /* compare-and-swap doubleword w barrier */
260 #ifdef __COMM_PAGE_SYMBOLS
262 #define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \
263 .org (symbol_address - (_COMM_PAGE_START_ADDRESS & 0xFFFFE000)) ;\
266 .text
/* Required to make a well behaved symbol file */
268 CREATE_COMM_PAGE_SYMBOL(___compare_and_swap32
, _COMM_PAGE_COMPARE_AND_SWAP32
)
269 CREATE_COMM_PAGE_SYMBOL(___compare_and_swap64
, _COMM_PAGE_COMPARE_AND_SWAP64
)
270 CREATE_COMM_PAGE_SYMBOL(___atomic_enqueue
, _COMM_PAGE_ENQUEUE
)
271 CREATE_COMM_PAGE_SYMBOL(___atomic_dequeue
, _COMM_PAGE_DEQUEUE
)
272 CREATE_COMM_PAGE_SYMBOL(___memory_barrier
, _COMM_PAGE_MEMORY_BARRIER
)
273 CREATE_COMM_PAGE_SYMBOL(___atomic_add32
, _COMM_PAGE_ATOMIC_ADD32
)
274 CREATE_COMM_PAGE_SYMBOL(___atomic_add64
, _COMM_PAGE_ATOMIC_ADD64
)
275 CREATE_COMM_PAGE_SYMBOL(___cpu_number
, _COMM_PAGE_CPU_NUMBER
)
276 CREATE_COMM_PAGE_SYMBOL(___mach_absolute_time
, _COMM_PAGE_ABSOLUTE_TIME
)
277 CREATE_COMM_PAGE_SYMBOL(___spin_lock_try
, _COMM_PAGE_SPINLOCK_TRY
)
278 CREATE_COMM_PAGE_SYMBOL(___spin_lock
, _COMM_PAGE_SPINLOCK_LOCK
)
279 CREATE_COMM_PAGE_SYMBOL(___spin_unlock
, _COMM_PAGE_SPINLOCK_UNLOCK
)
280 CREATE_COMM_PAGE_SYMBOL(___pthread_getspecific
, _COMM_PAGE_PTHREAD_GETSPECIFIC
)
281 CREATE_COMM_PAGE_SYMBOL(___gettimeofday
, _COMM_PAGE_GETTIMEOFDAY
)
282 CREATE_COMM_PAGE_SYMBOL(___sys_dcache_flush
, _COMM_PAGE_FLUSH_DCACHE
)
283 CREATE_COMM_PAGE_SYMBOL(___sys_icache_invalidate
, _COMM_PAGE_FLUSH_ICACHE
)
284 CREATE_COMM_PAGE_SYMBOL(___pthread_self
, _COMM_PAGE_PTHREAD_SELF
)
285 CREATE_COMM_PAGE_SYMBOL(___pfz_preempt
, _COMM_PAGE_PREEMPT
)
286 CREATE_COMM_PAGE_SYMBOL(___spin_lock_relinquish
, _COMM_PAGE_RELINQUISH
)
287 CREATE_COMM_PAGE_SYMBOL(___bit_test_and_set
, _COMM_PAGE_BTS
)
288 CREATE_COMM_PAGE_SYMBOL(___bit_test_and_clear
, _COMM_PAGE_BTC
)
289 CREATE_COMM_PAGE_SYMBOL(___bzero
, _COMM_PAGE_BZERO
)
290 CREATE_COMM_PAGE_SYMBOL(___bcopy
, _COMM_PAGE_BCOPY
)
291 CREATE_COMM_PAGE_SYMBOL(___memcpy
, _COMM_PAGE_MEMCPY
)
292 /* CREATE_COMM_PAGE_SYMBOL(___memmove, _COMM_PAGE_MEMMOVE) */
293 CREATE_COMM_PAGE_SYMBOL(___memset_pattern
, _COMM_PAGE_MEMSET_PATTERN
)
294 CREATE_COMM_PAGE_SYMBOL(___longcopy
, _COMM_PAGE_LONGCOPY
)
295 CREATE_COMM_PAGE_SYMBOL(___backoff
, _COMM_PAGE_BACKOFF
)
296 CREATE_COMM_PAGE_SYMBOL(___fifo_enqueue
, _COMM_PAGE_FIFO_ENQUEUE
)
297 CREATE_COMM_PAGE_SYMBOL(___fifo_dequeue
, _COMM_PAGE_FIFO_DEQUEUE
)
298 CREATE_COMM_PAGE_SYMBOL(___nanotime
, _COMM_PAGE_NANOTIME
)
299 CREATE_COMM_PAGE_SYMBOL(___mutex_lock
, _COMM_PAGE_MUTEX_LOCK
)
300 CREATE_COMM_PAGE_SYMBOL(___pfz_enqueue
, _COMM_PAGE_PFZ_ENQUEUE
)
301 CREATE_COMM_PAGE_SYMBOL(___pfz_dequeue
, _COMM_PAGE_PFZ_DEQUEUE
)
302 CREATE_COMM_PAGE_SYMBOL(___pfz_mutex_lock
, _COMM_PAGE_PFZ_MUTEX_LOCK
)
303 CREATE_COMM_PAGE_SYMBOL(___end_comm_page
, _COMM_PAGE_END
)
305 .data
/* Required to make a well behaved symbol file */
306 .long 0 /* Required to make a well behaved symbol file */
308 #endif /* __COMM_PAGE_SYMBOLS */
309 #endif /* __ASSEMBLER__ */
311 #endif /* _I386_CPU_CAPABILITIES_H */