/*
- * Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_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@
+ * 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. The rights granted to you under the
+ * License may not be used to create, or enable the creation or
+ * redistribution of, unlawful or unlicensed copies of an Apple operating
+ * system, or to circumvent, violate, or enable the circumvention or
+ * violation of, any terms of an Apple operating system software license
+ * agreement.
+ *
+ * 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
+ * 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.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
*/
#ifdef PRIVATE
#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 kHasSSE 0x00000002
#define kHasSSE2 0x00000004
#define kHasSSE3 0x00000008
-#define kCache32 0x00000010 /* cache line size is 32 bytes */
+#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 kHasSupplementalSSE3 0x00000100
-#define kHasMNI kHasSupplementalSSE3
-#define k64Bit 0x00000200 /* processor supports EM64T (not what mode you're running in) */
+#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 kUP 0x00008000 // set if (kNumCPUs == 1)
+#define kNumCPUs 0x00FF0000 // number of CPUs (see _NumCPUs() below)
-#define kNumCPUsShift 16 /* see _NumCPUs() below */
+#define kNumCPUsShift 16 // see _NumCPUs() below
#ifndef __ASSEMBLER__
#include <sys/cdefs.h>
/*
* The shared kernel/user "comm page(s)":
*
- * The last several pages of every address space are reserved for the kernel/user
- * "comm area". During system initialization, the kernel populates the comm pages with
+ * 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, we don't use it.
+ * Because Mach VM cannot map the last page of an address space, the max length of
+ * the comm area is seven pages.
*/
-#define _COMM_PAGE32_AREA_LENGTH ( 19 * 4096 ) /* reserved length of entire comm area */
-#define _COMM_PAGE32_BASE_ADDRESS ( -20 * 4096 ) /* base address of allocated memory */
-#define _COMM_PAGE32_START_ADDRESS ( -16 * 4096 ) /* address traditional commpage code starts on */
-#define _COMM_PAGE32_AREA_USED ( 19 * 4096 ) /* this is the amt actually allocated */
-
-#define _COMM_PAGE64_AREA_LENGTH ( 2 * 1024 * 1024 ) /* reserved length of entire comm area (2MB) */
-#define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000ULL ) /* base address of allocated memory */
-#define _COMM_PAGE64_START_ADDRESS ( _COMM_PAGE64_BASE_ADDRESS ) /* address traditional commpage code starts on */
-#define _COMM_PAGE64_AREA_USED ( 2 * 4096 ) /* this is the amt actually populated */
-
-
-#if defined(__i386__)
-
-#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE32_AREA_LENGTH
-#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS
-#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS
-#define _COMM_PAGE_AREA_USED _COMM_PAGE32_AREA_USED
-#define _COMM_PAGE_SIGS_OFFSET 0x8000 /* offset to routine signatures */
-
-#elif defined(__x86_64__)
-
-#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE64_AREA_LENGTH
-#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS
-#define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_START_ADDRESS
-#define _COMM_PAGE_AREA_USED _COMM_PAGE64_AREA_USED
-
-#else
-#error architecture not supported
-#endif
+#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
/* 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 6 /* version of the commarea format */
+#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+0x022) /* uint8_t number of configured CPUs */
-#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) /* uint16_t cache line size */
-
-#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x028) /* 24 unused bytes */
+#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
-#if defined(__i386__) /* following are not defined in 64-bit */
-#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 */
-#else
-#define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x040) /* 16 unused bytes */
-#endif
-
-#define _COMM_PAGE_NT_TSC_BASE (_COMM_PAGE_START_ADDRESS+0x050) /* used by nanotime() */
-#define _COMM_PAGE_NT_SCALE (_COMM_PAGE_START_ADDRESS+0x058) /* used by nanotime() */
-#define _COMM_PAGE_NT_SHIFT (_COMM_PAGE_START_ADDRESS+0x05c) /* used by nanotime() */
-#define _COMM_PAGE_NT_NS_BASE (_COMM_PAGE_START_ADDRESS+0x060) /* used by nanotime() */
+#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x030) // 16 unused bytes
-#define _COMM_PAGE_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x068) /* used by gettimeofday() */
-#define _COMM_PAGE_TIMESTAMP (_COMM_PAGE_START_ADDRESS+0x070) /* used by gettimeofday() */
-#define _COMM_PAGE_TIMEENABLE (_COMM_PAGE_START_ADDRESS+0x078) /* used by gettimeofday() */
-
-#define _NT_TSC_BASE 0 /* offsets into nanotime data */
-#define _NT_SCALE 8
-#define _NT_SHIFT 12
-#define _NT_NS_BASE 16
-#define _TIMEBASE 0 /* offsets into gettimeofday data */
-#define _TIMESTAMP 8
-#define _TIMEENABLE 16
+#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
- /* jump table (jmp 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_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) /* memory barrier */
-#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_UNUSED3 (_COMM_PAGE_START_ADDRESS+0x1e0) /* 32 unused bytes */
-
-#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_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()
-#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() */
+ /* 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_OLD_NANOTIME (_COMM_PAGE_START_ADDRESS+0xf80) /* old nanotime location (deprecated) */
-#define _COMM_PAGE_MEMSET_PATTERN (_COMM_PAGE_START_ADDRESS+0x1000) /* used by nonzero memset() */
-#define _COMM_PAGE_LONGCOPY (_COMM_PAGE_START_ADDRESS+0x1200) /* used by bcopy() for very long operands */
+#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_SYSTEM_INTEGRITY (_COMM_PAGE_START_ADDRESS+0x1600) /* system integrity data, 256 bytes */
+#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+0x1700) /* nanotime() */
+#define _COMM_PAGE_NANOTIME (_COMM_PAGE_START_ADDRESS+0xF80) // nanotime()
-#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0x1780) /* end of common page - insert new stuff here */
+#define _COMM_PAGE_BIGCOPY (_COMM_PAGE_START_ADDRESS+0x1000)// very-long-operand copies
-/* _COMM_PAGE_COMPARE_AND_SWAP{32,64}B are not used on x86 and are
- * maintained here for source compatability. These will be removed at
- * some point, so don't go relying on them. */
-#define _COMM_PAGE_COMPARE_AND_SWAP32B (_COMM_PAGE_START_ADDRESS+0xf80) /* compare-and-swap word w barrier */
-#define _COMM_PAGE_COMPARE_AND_SWAP64B (_COMM_PAGE_START_ADDRESS+0xfc0) /* compare-and-swap doubleword w barrier */
+#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_START_ADDRESS & 0xFFFFE000)) ;\
+ .org (symbol_address - (_COMM_PAGE_BASE_ADDRESS & 0xFFFFE000)) ;\
symbol_name: nop
- .text /* Required to make a well behaved symbol file */
+ .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(___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(___old_nanotime, _COMM_PAGE_OLD_NANOTIME)
- CREATE_COMM_PAGE_SYMBOL(___memset_pattern, _COMM_PAGE_MEMSET_PATTERN)
- CREATE_COMM_PAGE_SYMBOL(___longcopy, _COMM_PAGE_LONGCOPY)
+// 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 */
+ .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__ */
projects / apple / xnu.git / blobdiff