+#define _COMM_PAGE_SCHED_GEN (_COMM_PAGE_START_ADDRESS+0x028) /* 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_SPIN_COUNT (_COMM_PAGE_START_ADDRESS+0x030) /* 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_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x04C) /* [0x4C,0x50) 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() */
+
+
+#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_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 (0xd80) /* end of routines in text page */
+#define _COMM_TEXT_PFZ_END_OFFSET (0xfff) /* 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_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 */
+
+#ifdef __ASSEMBLER__
+#ifdef __COMM_PAGE_SYMBOLS
+
+#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \
+ .org (symbol_address - (_COMM_PAGE_START_ADDRESS & 0xFFFFE000)) ;\
+symbol_name: nop
+
+ .text /* Required to make a well behaved symbol file */
+
+ CREATE_COMM_PAGE_SYMBOL(___preempt, _COMM_PAGE_PREEMPT)
+ CREATE_COMM_PAGE_SYMBOL(___backoff, _COMM_PAGE_BACKOFF)
+ CREATE_COMM_PAGE_SYMBOL(___pfz_enqueue, _COMM_PAGE_PFZ_ENQUEUE)
+ CREATE_COMM_PAGE_SYMBOL(___pfz_dequeue, _COMM_PAGE_PFZ_DEQUEUE)
+ 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__ */
projects / apple / xnu.git / blobdiff