*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * 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 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
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
*/
#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
- *
+/*
* 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 kHasPNI 0x00000008 // Prescott New Instructions
+#define kCache32 0x00000010 // cache line size is 32 bytes
+#define kCache64 0x00000020
+#define kCache128 0x00000040
+
+#define kUP 0x00008000 // set if (kNumCPUs == 1)
+#define kNumCPUs 0x00FF0000 // number of CPUs (see _NumCPUs() below)
+
+#define kNumCPUsShift 16 // see _NumCPUs() below
+
#ifndef __ASSEMBLER__
-extern int _cpu_capabilities;
+extern uint32_t _get_cpu_capabilities( void );
+
+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.
+ */
+
+#define _COMM_PAGE_BASE_ADDRESS 0xBFFF9000 // VM_MAX_ADDRESS - 7 * 4096
+#define _COMM_PAGE_SIGS_OFFSET 0x4000 // offset to routine signatures
+#define _COMM_PAGE_AREA_LENGTH ( 7*4096) // reserved length of entire comm area
-#endif
+/* 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 1 // this is version 1 of the commarea format
+
+#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_BASE_ADDRESS+0x020) // uint32_t _cpu_capabilities
+#define _COMM_PAGE_NCPUS (_COMM_PAGE_BASE_ADDRESS+0x021) // uint8_t number of configured CPUs
+#define _COMM_PAGE_VECTOR_FLAVOR (_COMM_PAGE_BASE_ADDRESS+0x024) // uint8_t SSE/SSE2/PNI
+#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_BASE_ADDRESS+0x026) // uint16_t cache line size
+
+#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_BASE_ADDRESS+0x030) // 16 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_UNUSED2 (_COMM_PAGE_BASE_ADDRESS+0x050) // 16 unused bytes
+
+#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()
+
+#define _COMM_PAGE_UNUSED3 (_COMM_PAGE_BASE_ADDRESS+0x080) // 384 unused bytes
+
+ /* 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_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()
-/* Bit definitions for _cpu_capabilities: */
+#define _COMM_PAGE_UNUSED6 (_COMM_PAGE_BASE_ADDRESS+0xF80) // 128 unused bytes
+
+#define _COMM_PAGE_BIGCOPY (_COMM_PAGE_BASE_ADDRESS+0x1000)// very-long-operand copies
+
+#define _COMM_PAGE_END (_COMM_PAGE_BASE_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(___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(___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 /* __APPLE_API_PRIVATE */
#endif /* _I386_CPU_CAPABILITIES_H */
projects / apple / xnu.git / blobdiff