X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..d9a64523371fa019c4575bb400cbbc3a50ac9903:/osfmk/i386/cpu_data.h diff --git a/osfmk/i386/cpu_data.h b/osfmk/i386/cpu_data.h index e4ba6fd33..4201068f4 100644 --- a/osfmk/i386/cpu_data.h +++ b/osfmk/i386/cpu_data.h @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * 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. + * 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 @@ -20,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -30,161 +33,622 @@ #ifndef I386_CPU_DATA #define I386_CPU_DATA -#include #include -#if defined(__GNUC__) - #include #include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if CONFIG_VMX +#include +#endif + +#if MONOTONIC +#include +#endif /* MONOTONIC */ + +#include + +/* + * Data structures referenced (anonymously) from per-cpu data: + */ +struct cpu_cons_buffer; +struct cpu_desc_table; +struct mca_state; +struct prngContext; + +/* + * Data structures embedded in per-cpu data: + */ +typedef struct rtclock_timer { + mpqueue_head_t queue; + uint64_t deadline; + uint64_t when_set; + boolean_t has_expired; +} rtclock_timer_t; + +typedef struct { + /* The 'u' suffixed fields store the double-mapped descriptor addresses */ + struct x86_64_tss *cdi_ktssu; + struct x86_64_tss *cdi_ktssb; + x86_64_desc_register_t cdi_gdtu; + x86_64_desc_register_t cdi_gdtb; + x86_64_desc_register_t cdi_idtu; + x86_64_desc_register_t cdi_idtb; + struct fake_descriptor *cdi_ldtu; + struct fake_descriptor *cdi_ldtb; + vm_offset_t cdi_sstku; + vm_offset_t cdi_sstkb; +} cpu_desc_index_t; + +typedef enum { + TASK_MAP_32BIT, /* 32-bit user, compatibility mode */ + TASK_MAP_64BIT, /* 64-bit user thread, shared space */ +} task_map_t; + + +/* + * This structure is used on entry into the (uber-)kernel on syscall from + * a 64-bit user. It contains the address of the machine state save area + * for the current thread and a temporary place to save the user's rsp + * before loading this address into rsp. + */ +typedef struct { + addr64_t cu_isf; /* thread->pcb->iss.isf */ + uint64_t cu_tmp; /* temporary scratch */ + addr64_t cu_user_gs_base; +} cpu_uber_t; + +typedef uint16_t pcid_t; +typedef uint8_t pcid_ref_t; + +#define CPU_RTIME_BINS (12) +#define CPU_ITIME_BINS (CPU_RTIME_BINS) + +#define MAXPLFRAMES (16) +typedef struct { + boolean_t pltype; + int plevel; + uint64_t plbt[MAXPLFRAMES]; +} plrecord_t; -#if 0 -#ifndef __OPTIMIZE__ -#define extern static +/* + * Per-cpu data. + * + * Each processor has a per-cpu data area which is dereferenced through the + * current_cpu_datap() macro. For speed, the %gs segment is based here, and + * using this, inlines provides single-instruction access to frequently used + * members - such as get_cpu_number()/cpu_number(), and get_active_thread()/ + * current_thread(). + * + * Cpu data owned by another processor can be accessed using the + * cpu_datap(cpu_number) macro which uses the cpu_data_ptr[] array of per-cpu + * pointers. + */ +typedef struct { + pcid_t cpu_pcid_free_hint; +#define PMAP_PCID_MAX_PCID (0x800) + pcid_ref_t cpu_pcid_refcounts[PMAP_PCID_MAX_PCID]; + pmap_t cpu_pcid_last_pmap_dispatched[PMAP_PCID_MAX_PCID]; +} pcid_cdata_t; + +typedef struct cpu_data +{ + struct pal_cpu_data cpu_pal_data; /* PAL-specific data */ +#define cpu_pd cpu_pal_data /* convenience alias */ + struct cpu_data *cpu_this; /* pointer to myself */ + thread_t cpu_active_thread; + thread_t cpu_nthread; + volatile int cpu_preemption_level; + int cpu_number; /* Logical CPU */ + void *cpu_int_state; /* interrupt state */ + vm_offset_t cpu_active_stack; /* kernel stack base */ + vm_offset_t cpu_kernel_stack; /* kernel stack top */ + vm_offset_t cpu_int_stack_top; + int cpu_interrupt_level; + volatile int cpu_signals; /* IPI events */ + volatile int cpu_prior_signals; /* Last set of events, + * debugging + */ + ast_t cpu_pending_ast; + volatile int cpu_running; +#if !MONOTONIC + boolean_t cpu_fixed_pmcs_enabled; +#endif /* !MONOTONIC */ + rtclock_timer_t rtclock_timer; + uint64_t quantum_timer_deadline; + volatile addr64_t cpu_active_cr3 __attribute((aligned(64))); + union { + volatile uint32_t cpu_tlb_invalid; + struct { + volatile uint16_t cpu_tlb_invalid_local; + volatile uint16_t cpu_tlb_invalid_global; + }; + }; + volatile task_map_t cpu_task_map; + volatile addr64_t cpu_task_cr3; + addr64_t cpu_kernel_cr3; + volatile addr64_t cpu_ucr3; + boolean_t cpu_pagezero_mapped; + cpu_uber_t cpu_uber; +/* Double-mapped per-CPU exception stack address */ + uintptr_t cd_estack; + int cpu_xstate; +/* Address of shadowed, partially mirrored CPU data structures located + * in the double mapped PML4 + */ + void *cd_shadow; + struct processor *cpu_processor; +#if NCOPY_WINDOWS > 0 + struct cpu_pmap *cpu_pmap; #endif + struct real_descriptor *cpu_ldtp; + struct cpu_desc_table *cpu_desc_tablep; + cpu_desc_index_t cpu_desc_index; + int cpu_ldt; +#if NCOPY_WINDOWS > 0 + vm_offset_t cpu_copywindow_base; + uint64_t *cpu_copywindow_pdp; + + vm_offset_t cpu_physwindow_base; + uint64_t *cpu_physwindow_ptep; #endif -extern cpu_data_t cpu_data[NCPUS]; +#define HWINTCNT_SIZE 256 + uint32_t cpu_hwIntCnt[HWINTCNT_SIZE]; /* Interrupt counts */ + uint64_t cpu_hwIntpexits[HWINTCNT_SIZE]; + uint64_t cpu_dr7; /* debug control register */ + uint64_t cpu_int_event_time; /* intr entry/exit time */ + pal_rtc_nanotime_t *cpu_nanotime; /* Nanotime info */ +#if KPC + /* double-buffered performance counter data */ + uint64_t *cpu_kpc_buf[2]; + /* PMC shadow and reload value buffers */ + uint64_t *cpu_kpc_shadow; + uint64_t *cpu_kpc_reload; +#endif +#if MONOTONIC + struct mt_cpu cpu_monotonic; +#endif /* MONOTONIC */ + uint32_t cpu_pmap_pcid_enabled; + pcid_t cpu_active_pcid; + pcid_t cpu_last_pcid; + pcid_t cpu_kernel_pcid; + volatile pcid_ref_t *cpu_pmap_pcid_coherentp; + volatile pcid_ref_t *cpu_pmap_pcid_coherentp_kernel; + pcid_cdata_t *cpu_pcid_data; +#ifdef PCID_STATS + uint64_t cpu_pmap_pcid_flushes; + uint64_t cpu_pmap_pcid_preserves; +#endif + uint64_t cpu_aperf; + uint64_t cpu_mperf; + uint64_t cpu_c3res; + uint64_t cpu_c6res; + uint64_t cpu_c7res; + uint64_t cpu_itime_total; + uint64_t cpu_rtime_total; + uint64_t cpu_ixtime; + uint64_t cpu_idle_exits; + uint64_t cpu_rtimes[CPU_RTIME_BINS]; + uint64_t cpu_itimes[CPU_ITIME_BINS]; +#if !MONOTONIC + uint64_t cpu_cur_insns; + uint64_t cpu_cur_ucc; + uint64_t cpu_cur_urc; +#endif /* !MONOTONIC */ + uint64_t cpu_gpmcs[4]; + uint64_t cpu_max_observed_int_latency; + int cpu_max_observed_int_latency_vector; + volatile boolean_t cpu_NMI_acknowledged; + uint64_t debugger_entry_time; + uint64_t debugger_ipi_time; + /* A separate nested interrupt stack flag, to account + * for non-nested interrupts arriving while on the interrupt stack + * Currently only occurs when AICPM enables interrupts on the + * interrupt stack during processor offlining. + */ + uint32_t cpu_nested_istack; + uint32_t cpu_nested_istack_events; + x86_saved_state64_t *cpu_fatal_trap_state; + x86_saved_state64_t *cpu_post_fatal_trap_state; +#if CONFIG_VMX + vmx_cpu_t cpu_vmx; /* wonderful world of virtualization */ +#endif +#if CONFIG_MCA + struct mca_state *cpu_mca_state; /* State at MC fault */ +#endif + int cpu_type; + int cpu_subtype; + int cpu_threadtype; + boolean_t cpu_iflag; + boolean_t cpu_boot_complete; + int cpu_hibernate; +#define MAX_PREEMPTION_RECORDS (8) +#if DEVELOPMENT || DEBUG + int cpu_plri; + plrecord_t plrecords[MAX_PREEMPTION_RECORDS]; +#endif + void *cpu_console_buf; + struct x86_lcpu lcpu; + int cpu_phys_number; /* Physical CPU */ + cpu_id_t cpu_id; /* Platform Expert */ +#if DEBUG + uint64_t cpu_entry_cr3; + uint64_t cpu_exit_cr3; + uint64_t cpu_pcid_last_cr3; +#endif + boolean_t cpu_rendezvous_in_progress; +} cpu_data_t; + +extern cpu_data_t *cpu_data_ptr[]; + +/* Macro to generate inline bodies to retrieve per-cpu data fields. */ +#if defined(__clang__) +#define GS_RELATIVE volatile __attribute__((address_space(256))) +#ifndef offsetof +#define offsetof(TYPE,MEMBER) __builtin_offsetof(TYPE,MEMBER) +#endif -#define get_cpu_data() &cpu_data[cpu_number()] +#define CPU_DATA_GET(member,type) \ + cpu_data_t GS_RELATIVE *cpu_data = \ + (cpu_data_t GS_RELATIVE *)0UL; \ + type ret; \ + ret = cpu_data->member; \ + return ret; + +#define CPU_DATA_GET_INDEX(member,index,type) \ + cpu_data_t GS_RELATIVE *cpu_data = \ + (cpu_data_t GS_RELATIVE *)0UL; \ + type ret; \ + ret = cpu_data->member[index]; \ + return ret; + +#define CPU_DATA_SET(member,value) \ + cpu_data_t GS_RELATIVE *cpu_data = \ + (cpu_data_t GS_RELATIVE *)0UL; \ + cpu_data->member = value; + +#define CPU_DATA_XCHG(member,value,type) \ + cpu_data_t GS_RELATIVE *cpu_data = \ + (cpu_data_t GS_RELATIVE *)0UL; \ + type ret; \ + ret = cpu_data->member; \ + cpu_data->member = value; \ + return ret; + +#else /* !defined(__clang__) */ + +#ifndef offsetof +#define offsetof(TYPE,MEMBER) ((size_t) &((TYPE *)0)->MEMBER) +#endif /* offsetof */ +#define CPU_DATA_GET(member,type) \ + type ret; \ + __asm__ volatile ("mov %%gs:%P1,%0" \ + : "=r" (ret) \ + : "i" (offsetof(cpu_data_t,member))); \ + return ret; + +#define CPU_DATA_GET_INDEX(member,index,type) \ + type ret; \ + __asm__ volatile ("mov %%gs:(%1),%0" \ + : "=r" (ret) \ + : "r" (offsetof(cpu_data_t,member[index]))); \ + return ret; + +#define CPU_DATA_SET(member,value) \ + __asm__ volatile ("mov %0,%%gs:%P1" \ + : \ + : "r" (value), "i" (offsetof(cpu_data_t,member))); + +#define CPU_DATA_XCHG(member,value,type) \ + type ret; \ + __asm__ volatile ("xchg %0,%%gs:%P1" \ + : "=r" (ret) \ + : "i" (offsetof(cpu_data_t,member)), "0" (value)); \ + return ret; + +#endif /* !defined(__clang__) */ /* * Everyone within the osfmk part of the kernel can use the fast * inline versions of these routines. Everyone outside, must call * the real thing, */ -extern thread_t __inline__ current_thread_fast(void); -extern thread_t __inline__ current_thread_fast(void) -{ - register thread_t ct; - register int idx = (int)&((cpu_data_t *)0)->active_thread; - __asm__ volatile (" movl %%gs:(%1),%0" : "=r" (ct) : "r" (idx)); - return (ct); +/* + * The "volatile" flavor of current_thread() is intended for use by + * scheduler code which may need to update the thread pointer in the + * course of a context switch. Any call to current_thread() made + * prior to the thread pointer update should be safe to optimize away + * as it should be consistent with that thread's state to the extent + * the compiler can reason about it. Likewise, the context switch + * path will eventually result in an arbitrary branch to the new + * thread's pc, about which the compiler won't be able to reason. + * Thus any compile-time optimization of current_thread() calls made + * within the new thread should be safely encapsulated in its + * register/stack state. The volatile form therefore exists to cover + * the window between the thread pointer update and the branch to + * the new pc. + */ +static inline thread_t +get_active_thread_volatile(void) +{ + CPU_DATA_GET(cpu_active_thread,thread_t) +} + +static inline __pure2 thread_t +get_active_thread(void) +{ + CPU_DATA_GET(cpu_active_thread,thread_t) } -#define current_thread() current_thread_fast() +#define current_thread_fast() get_active_thread() +#define current_thread_volatile() get_active_thread_volatile() +#define current_thread() current_thread_fast() -extern int __inline__ get_preemption_level(void); -extern void __inline__ disable_preemption(void); -extern void __inline__ enable_preemption(void); -extern void __inline__ enable_preemption_no_check(void); -extern void __inline__ mp_disable_preemption(void); -extern void __inline__ mp_enable_preemption(void); -extern void __inline__ mp_enable_preemption_no_check(void); -extern int __inline__ get_simple_lock_count(void); -extern int __inline__ get_interrupt_level(void); +#define cpu_mode_is64bit() TRUE -extern int __inline__ get_preemption_level(void) +static inline int +get_preemption_level(void) +{ + CPU_DATA_GET(cpu_preemption_level,int) +} +static inline int +get_interrupt_level(void) { - register int idx = (int)&((cpu_data_t *)0)->preemption_level; - register int pl; + CPU_DATA_GET(cpu_interrupt_level,int) +} +static inline int +get_cpu_number(void) +{ + CPU_DATA_GET(cpu_number,int) +} +static inline int +get_cpu_phys_number(void) +{ + CPU_DATA_GET(cpu_phys_number,int) +} - __asm__ volatile (" movl %%gs:(%1),%0" : "=r" (pl) : "r" (idx)); +static inline cpu_data_t * +current_cpu_datap(void) { + CPU_DATA_GET(cpu_this, cpu_data_t *); +} - return (pl); +/* + * Facility to diagnose preemption-level imbalances, which are otherwise + * challenging to debug. On each operation that enables or disables preemption, + * we record a backtrace into a per-CPU ring buffer, along with the current + * preemption level and operation type. Thus, if an imbalance is observed, + * one can examine these per-CPU records to determine which codepath failed + * to re-enable preemption, enabled premption without a corresponding + * disablement etc. The backtracer determines which stack is currently active, + * and uses that to perform bounds checks on unterminated stacks. + * To enable, sysctl -w machdep.pltrace=1 on DEVELOPMENT or DEBUG kernels (DRK '15) + * The bounds check currently doesn't account for non-default thread stack sizes. + */ +#if DEVELOPMENT || DEBUG +static inline void pltrace_bt(uint64_t *rets, int maxframes, uint64_t stacklo, uint64_t stackhi) { + uint64_t *cfp = (uint64_t *) __builtin_frame_address(0); + int plbtf; + + assert(stacklo !=0 && stackhi !=0); + + for (plbtf = 0; plbtf < maxframes; plbtf++) { + if (((uint64_t)cfp == 0) || (((uint64_t)cfp < stacklo) || ((uint64_t)cfp > stackhi))) { + rets[plbtf] = 0; + continue; + } + rets[plbtf] = *(cfp + 1); + cfp = (uint64_t *) (*cfp); + } } -extern void __inline__ disable_preemption(void) -{ -#if MACH_ASSERT - extern void _disable_preemption(void); - _disable_preemption(); -#else /* MACH_ASSERT */ - register int idx = (int)&((cpu_data_t *)0)->preemption_level; +extern uint32_t low_intstack[]; /* bottom */ +extern uint32_t low_eintstack[]; /* top */ +extern char mp_slave_stack[PAGE_SIZE]; + +static inline void pltrace_internal(boolean_t enable) { + cpu_data_t *cdata = current_cpu_datap(); + int cpli = cdata->cpu_preemption_level; + int cplrecord = cdata->cpu_plri; + uint64_t kstackb, kstackt, *plbts; + + assert(cpli >= 0); + + cdata->plrecords[cplrecord].pltype = enable; + cdata->plrecords[cplrecord].plevel = cpli; + + plbts = &cdata->plrecords[cplrecord].plbt[0]; + + cplrecord++; + + if (cplrecord >= MAX_PREEMPTION_RECORDS) { + cplrecord = 0; + } + + cdata->cpu_plri = cplrecord; + /* Obtain the 'current' program counter, initial backtrace + * element. This will also indicate if we were unable to + * trace further up the stack for some reason + */ + __asm__ volatile("leaq 1f(%%rip), %%rax; mov %%rax, %0\n1:" + : "=m" (plbts[0]) + : + : "rax"); + + + thread_t cplthread = cdata->cpu_active_thread; + if (cplthread) { + uintptr_t csp; + __asm__ __volatile__ ("movq %%rsp, %0": "=r" (csp):); + /* Determine which stack we're on to populate stack bounds. + * We don't need to trace across stack boundaries for this + * routine. + */ + kstackb = cdata->cpu_active_stack; + kstackt = kstackb + KERNEL_STACK_SIZE; + if (csp < kstackb || csp > kstackt) { + kstackt = cdata->cpu_kernel_stack; + kstackb = kstackb - KERNEL_STACK_SIZE; + if (csp < kstackb || csp > kstackt) { + kstackt = cdata->cpu_int_stack_top; + kstackb = kstackt - INTSTACK_SIZE; + if (csp < kstackb || csp > kstackt) { + kstackt = (uintptr_t)low_eintstack; + kstackb = (uintptr_t)low_eintstack - INTSTACK_SIZE; + if (csp < kstackb || csp > kstackt) { + kstackb = (uintptr_t) mp_slave_stack; + kstackt = (uintptr_t) mp_slave_stack + PAGE_SIZE; + } + } + } + } + + if (kstackb) { + pltrace_bt(&plbts[1], MAXPLFRAMES - 1, kstackb, kstackt); + } + } +} - __asm__ volatile (" incl %%gs:(%0)" : : "r" (idx)); -#endif /* MACH_ASSERT */ +extern int plctrace_enabled; +#endif /* DEVELOPMENT || DEBUG */ + +static inline void pltrace(boolean_t plenable) { +#if DEVELOPMENT || DEBUG + if (__improbable(plctrace_enabled != 0)) { + pltrace_internal(plenable); + } +#else + (void)plenable; +#endif } -extern void __inline__ enable_preemption(void) -{ -#if MACH_ASSERT - extern void _enable_preemption(void); +static inline void +disable_preemption_internal(void) { + assert(get_preemption_level() >= 0); + +#if defined(__clang__) + cpu_data_t GS_RELATIVE *cpu_data = (cpu_data_t GS_RELATIVE *)0UL; + cpu_data->cpu_preemption_level++; +#else + __asm__ volatile ("incl %%gs:%P0" + : + : "i" (offsetof(cpu_data_t, cpu_preemption_level))); +#endif + pltrace(FALSE); +} +static inline void +enable_preemption_internal(void) { assert(get_preemption_level() > 0); - _enable_preemption(); -#else /* MACH_ASSERT */ - extern void kernel_preempt_check (void); - register int idx = (int)&((cpu_data_t *)0)->preemption_level; - register void (*kpc)(void)= kernel_preempt_check; - - __asm__ volatile ("decl %%gs:(%0); jne 1f; \ - call %1; 1:" + pltrace(TRUE); +#if defined(__clang__) + cpu_data_t GS_RELATIVE *cpu_data = (cpu_data_t GS_RELATIVE *)0UL; + if (0 == --cpu_data->cpu_preemption_level) + kernel_preempt_check(); +#else + __asm__ volatile ("decl %%gs:%P0 \n\t" + "jne 1f \n\t" + "call _kernel_preempt_check \n\t" + "1:" : /* no outputs */ - : "r" (idx), "r" (kpc) - : "%eax", "%ecx", "%edx", "cc", "memory"); -#endif /* MACH_ASSERT */ + : "i" (offsetof(cpu_data_t, cpu_preemption_level)) + : "eax", "ecx", "edx", "cc", "memory"); +#endif } -extern void __inline__ enable_preemption_no_check(void) +static inline void +enable_preemption_no_check(void) { -#if MACH_ASSERT - extern void _enable_preemption_no_check(void); - assert(get_preemption_level() > 0); - _enable_preemption_no_check(); -#else /* MACH_ASSERT */ - register int idx = (int)&((cpu_data_t *)0)->preemption_level; - __asm__ volatile ("decl %%gs:(%0)" + pltrace(TRUE); +#if defined(__clang__) + cpu_data_t GS_RELATIVE *cpu_data = (cpu_data_t GS_RELATIVE *)0UL; + cpu_data->cpu_preemption_level--; +#else + __asm__ volatile ("decl %%gs:%P0" : /* no outputs */ - : "r" (idx) + : "i" (offsetof(cpu_data_t, cpu_preemption_level)) : "cc", "memory"); -#endif /* MACH_ASSERT */ +#endif } -extern void __inline__ mp_disable_preemption(void) -{ -#if NCPUS > 1 - disable_preemption(); -#endif /* NCPUS > 1 */ +static inline void +_enable_preemption_no_check(void) { + enable_preemption_no_check(); } -extern void __inline__ mp_enable_preemption(void) +static inline void +mp_disable_preemption(void) { -#if NCPUS > 1 - enable_preemption(); -#endif /* NCPUS > 1 */ + disable_preemption_internal(); } -extern void __inline__ mp_enable_preemption_no_check(void) +static inline void +_mp_disable_preemption(void) { -#if NCPUS > 1 - enable_preemption_no_check(); -#endif /* NCPUS > 1 */ + disable_preemption_internal(); } -extern int __inline__ get_simple_lock_count(void) +static inline void +mp_enable_preemption(void) { - register int idx = (int)&((cpu_data_t *)0)->simple_lock_count; - register int pl; + enable_preemption_internal(); +} - __asm__ volatile (" movl %%gs:(%1),%0" : "=r" (pl) : "r" (idx)); +static inline void +_mp_enable_preemption(void) { + enable_preemption_internal(); +} - return (pl); +static inline void +mp_enable_preemption_no_check(void) { + enable_preemption_no_check(); } -extern int __inline__ get_interrupt_level(void) -{ - register int idx = (int)&((cpu_data_t *)0)->interrupt_level; - register int pl; +static inline void +_mp_enable_preemption_no_check(void) { + enable_preemption_no_check(); +} - __asm__ volatile (" movl %%gs:(%1),%0" : "=r" (pl) : "r" (idx)); +#ifdef XNU_KERNEL_PRIVATE +#define disable_preemption() disable_preemption_internal() +#define enable_preemption() enable_preemption_internal() +#define MACHINE_PREEMPTION_MACROS (1) +#endif - return (pl); +static inline cpu_data_t * +cpu_datap(int cpu) { + return cpu_data_ptr[cpu]; } -#if 0 -#ifndef __OPTIMIZE__ -#undef extern -#endif -#endif +static inline int +cpu_is_running(int cpu) { + return ((cpu_datap(cpu) != NULL) && (cpu_datap(cpu)->cpu_running)); +} -#else /* !defined(__GNUC__) */ +#ifdef MACH_KERNEL_PRIVATE +static inline cpu_data_t * +cpu_shadowp(int cpu) { + return cpu_data_ptr[cpu]->cd_shadow; +} -#endif /* defined(__GNUC__) */ +#endif +extern cpu_data_t *cpu_data_alloc(boolean_t is_boot_cpu); +extern void cpu_data_realloc(void); #endif /* I386_CPU_DATA */