-
-#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 */
-
-#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
+
+#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) /* first 16 bytes are a signature */
+#define _COMM_PAGE_SIGNATURELEN (0x10)
+#define _COMM_PAGE_CPU_CAPABILITIES64 (_COMM_PAGE_START_ADDRESS+0x010) /* uint64_t _cpu_capabilities */
+#define _COMM_PAGE_UNUSED (_COMM_PAGE_START_ADDRESS+0x018) /* 6 unused bytes */
+#define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) /* 16-bit version# */
+#define _COMM_PAGE_THIS_VERSION 14
+
+#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) /* uint32_t _cpu_capabilities (retained for compatibility) */
+#define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) /* uint8_t number of configured CPUs (hw.logicalcpu at boot time) */
+#define _COMM_PAGE_UNUSED0 (_COMM_PAGE_START_ADDRESS+0x024) /* 2 unused bytes, previouly reserved for expansion of cpu_capabilities */
+#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) /* uint16_t cache line size */
+
+#define _COMM_PAGE_UNUSED4 (_COMM_PAGE_START_ADDRESS+0x028) /* used to be _COMM_PAGE_SCHED_GEN: uint32_t scheduler generation number (count of pre-emptions) */
+#define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x02c) /* uint32_t copy of vm_memory_pressure */
+#define _COMM_PAGE_UNUSED3 (_COMM_PAGE_START_ADDRESS+0x030) /* used to be _COMM_PAGE_SPIN_COUNT: uint32_t max spin count for mutex's */
+
+#define _COMM_PAGE_ACTIVE_CPUS (_COMM_PAGE_START_ADDRESS+0x034) /* uint8_t number of active CPUs (hw.activecpu) */
+#define _COMM_PAGE_PHYSICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x035) /* uint8_t number of physical CPUs (hw.physicalcpu_max) */
+#define _COMM_PAGE_LOGICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x036) /* uint8_t number of logical CPUs (hw.logicalcpu_max) */
+#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x037) /* 1 unused bytes */
+#define _COMM_PAGE_MEMORY_SIZE (_COMM_PAGE_START_ADDRESS+0x038) /* uint64_t max memory size */
+
+#define _COMM_PAGE_CPUFAMILY (_COMM_PAGE_START_ADDRESS+0x040) /* uint32_t hw.cpufamily, x86*/
+#define _COMM_PAGE_KDEBUG_ENABLE (_COMM_PAGE_START_ADDRESS+0x044) /* uint32_t export "kdebug_enable" to userspace */
+#define _COMM_PAGE_ATM_DIAGNOSTIC_CONFIG (_COMM_PAGE_START_ADDRESS+0x48) /* uint32_t export "atm_diagnostic_config" to userspace */
+
+#define _COMM_PAGE_DTRACE_DOF_ENABLED (_COMM_PAGE_START_ADDRESS+0x04C) /* uint8_t 0 if userspace DOF disable, 1 if enabled */
+#define _COMM_PAGE_KERNEL_PAGE_SHIFT (_COMM_PAGE_START_ADDRESS+0x04D) /* uint8_t kernel vm page shift. COMM_PAGE_VERSION >= 14 */
+#define _COMM_PAGE_USER_PAGE_SHIFT_64 (_COMM_PAGE_START_ADDRESS+0x04E) /* uint8_t user vm page shift. COMM_PAGE_VERSION >= 14 */
+#define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x04F) /* 0x4F unused */
+
+#define _COMM_PAGE_TIME_DATA_START (_COMM_PAGE_START_ADDRESS+0x050) /* base of offsets below (_NT_SCALE etc) */
+#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_NT_GENERATION (_COMM_PAGE_START_ADDRESS+0x068) /* used by nanotime() */
+#define _COMM_PAGE_GTOD_GENERATION (_COMM_PAGE_START_ADDRESS+0x06c) /* used by gettimeofday() */
+#define _COMM_PAGE_GTOD_NS_BASE (_COMM_PAGE_START_ADDRESS+0x070) /* used by gettimeofday() */
+#define _COMM_PAGE_GTOD_SEC_BASE (_COMM_PAGE_START_ADDRESS+0x078) /* used by gettimeofday() */
+
+/* NOTE: APPROX_TIME must be aligned to 64-byte cache line size: */
+#define _COMM_PAGE_APPROX_TIME (_COMM_PAGE_START_ADDRESS+0x080) /* used by mach_approximate_time() */
+#define _COMM_PAGE_APPROX_TIME_SUPPORTED (_COMM_PAGE_START_ADDRESS+0x088) /* used by mach_approximate_time() */
+
+/* Align following entries to next cache line */
+#define _COMM_PAGE_CONT_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x0C0) /* used by mach_continuous_time() */
+#define _COMM_PAGE_BOOTTIME_USEC (_COMM_PAGE_START_ADDRESS+0x0C8) /* uint64_t boottime */
+#define _COMM_PAGE_NEWTIMEOFDAY_DATA (_COMM_PAGE_START_ADDRESS+0x0D0) /* used by gettimeofday(). Currently, sizeof(new_commpage_timeofday_data_t) = 40 */
+
+/* Resume packed values to the next cacheline */
+#define _COMM_PAGE_DYLD_FLAGS (_COMM_PAGE_START_ADDRESS+0x100) /* uint64_t export kern.dyld_system_flags to userspace */
+
+#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0xfff) /* end of common page */
+
+/* Warning: kernel commpage.h has a matching c typedef for the following. They must be kept in sync. */
+/* These offsets are from _COMM_PAGE_TIME_DATA_START */
+
+#define _NT_TSC_BASE 0
+#define _NT_SCALE 8
+#define _NT_SHIFT 12
+#define _NT_NS_BASE 16
+#define _NT_GENERATION 24
+#define _GTOD_GENERATION 28
+#define _GTOD_NS_BASE 32
+#define _GTOD_SEC_BASE 40
+
+/* 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 */
+/* New slots should be allocated with at least 16-byte alignment. Some like bcopy require */
+/* 32-byte alignment, and should be aligned as such in the assembly source before they are relocated */
+#define _COMM_PAGE_TEXT_START (_COMM_PAGE_START_ADDRESS+0x1000)
+#define _COMM_PAGE32_TEXT_START (_COMM_PAGE32_BASE_ADDRESS+0x1000) /* start of text section */
+#define _COMM_PAGE64_TEXT_START (_COMM_PAGE64_BASE_ADDRESS+0x1000)
+#define _COMM_PAGE_TEXT_AREA_USED ( 1 * 4096 )
+#define _COMM_PAGE_TEXT_AREA_LENGTH ( 1 * 4096 )
+#define _PFZ32_SLIDE_RANGE ( 14 ) /* pages between 0xfffff000 and _COMM_PAGE32_TEXT_START */
+#define _PFZ64_SLIDE_RANGE ( 510 ) /* pages between 0x00007ffffffff000 and _COMM_PAGE64_TEXT_START */
+
+/* setup start offset in the commpage text region for each jump table entry
+ * the Comm Page Offset is shortened to _COMM_TEXT_[label]_OFFSET
+ */
+
+#define _COMM_TEXT_PREEMPT_OFFSET (0x5a0) /* called from withing pfz */
+#define _COMM_TEXT_BACKOFF_OFFSET (0x600) /* called from PFZ */
+#define _COMM_TEXT_RET_OFFSET (0x680) /* called from PFZ */
+#define _COMM_TEXT_PFZ_START_OFFSET (0xc00) /* offset for Preemption Free Zone */
+#define _COMM_TEXT_PFZ_ENQUEUE_OFFSET (0xc00) /* internal FIFO enqueue */
+#define _COMM_TEXT_PFZ_DEQUEUE_OFFSET (0xc80) /* internal FIFO dequeue */
+#define _COMM_TEXT_UNUSED_OFFSET (0xd00) /* end of routines in text page */
+#define _COMM_TEXT_PFZ_END_OFFSET (0xd00) /* offset for end of PFZ */
+
+
+#define _COMM_PAGE_PREEMPT (_COMM_PAGE_TEXT_START+_COMM_TEXT_PREEMPT_OFFSET)
+#define _COMM_PAGE_BACKOFF (_COMM_PAGE_TEXT_START+_COMM_TEXT_BACKOFF_OFFSET)
+#define _COMM_PAGE_RET (_COMM_PAGE_TEXT_START+_COMM_TEXT_RET_OFFSET)
+
+#define _COMM_PAGE_PFZ_START (_COMM_PAGE_TEXT_START+_COMM_PAGE_PFZ_START_OFFSET)
+
+#define _COMM_PAGE_PFZ_ENQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_ENQUEUE_OFFSET)
+#define _COMM_PAGE_PFZ_DEQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_DEQUEUE_OFFSET)
+
+#define _COMM_PAGE_UNUSED6 (_COMM_PAGE_TEXT_START+_COMM_TEXT_UNUSED_OFFSET)
+#define _COMM_PAGE_PFZ_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET)
+#define _COMM_PAGE_TEXT_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET) /* end of common text page */
+
+/* _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 */
+
+/*
+ * _COMM_PAGE_USER_PAGE_SHIFT32 and _COMM_PAGE_USER_PAGE_SHIFT64 are the same on x86.
+ * But both defined to maintain compatability with the arm commpage.
+ */
+#define _COMM_PAGE_USER_PAGE_SHIFT_32 _COMM_PAGE_USER_PAGE_SHIFT_64
projects / apple / xnu.git / blobdiff