X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/55e303ae13a4cf49d70f2294092726f2fffb9ef2..91447636331957f3d9b5ca5b508f07c526b0074d:/osfmk/i386/cpu_data.h
diff --git a/osfmk/i386/cpu_data.h b/osfmk/i386/cpu_data.h
index 878789bb2..7d455b4a1 100644
--- a/osfmk/i386/cpu_data.h
+++ b/osfmk/i386/cpu_data.h
@@ -1,24 +1,21 @@
/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @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@
*/
@@ -30,38 +27,120 @@
#ifndef I386_CPU_DATA
#define I386_CPU_DATA
-#include <cpus.h>
#include <mach_assert.h>
#if defined(__GNUC__)
#include <kern/assert.h>
#include <kern/kern_types.h>
+#include <kern/processor.h>
#include <pexpert/pexpert.h>
-typedef struct
-{
- thread_act_t *active_thread;
- int preemption_level;
- int simple_lock_count;
- int interrupt_level;
- int cpu_number; /* Logical CPU number */
- int cpu_phys_number; /* Physical CPU Number */
- cpu_id_t cpu_id; /* Platform Expert handle */
- int cpu_status; /* Boot Status */
- int cpu_signals; /* IPI events */
- int mcount_off; /* mcount recursion flag */
+
+/*
+ * Data structures referenced (anonymously) from per-cpu data:
+ */
+struct cpu_core;
+struct cpu_cons_buffer;
+struct mp_desc_table;
+
+
+/*
+ * Data structures embedded in per-cpu data:
+ */
+typedef struct rtclock_timer {
+ uint64_t deadline;
+ boolean_t is_set;
+ boolean_t has_expired;
+} rtclock_timer_t;
+
+typedef struct {
+ uint64_t rnt_tsc; /* timestamp */
+ uint64_t rnt_nanos; /* nanoseconds */
+ uint32_t rnt_scale; /* tsc -> nanosec multiplier */
+ uint32_t rnt_shift; /* tsc -> nanosec shift/div */
+ uint64_t rnt_step_tsc; /* tsc when scale applied */
+ uint64_t rnt_step_nanos; /* ns when scale applied */
+} rtc_nanotime_t;
+
+typedef struct {
+ struct i386_tss *cdi_ktss;
+#if MACH_KDB
+ struct i386_tss *cdi_dbtss;
+#endif /* MACH_KDB */
+ struct fake_descriptor *cdi_gdt;
+ struct fake_descriptor *cdi_idt;
+ struct fake_descriptor *cdi_ldt;
+} cpu_desc_index_t;
+
+
+/*
+ * 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 cpu_data
+{
+ struct cpu_data *cpu_this; /* pointer to myself */
+ thread_t cpu_active_thread;
+ thread_t cpu_active_kloaded;
+ vm_offset_t cpu_active_stack;
+ vm_offset_t cpu_kernel_stack;
+ vm_offset_t cpu_int_stack_top;
+ int cpu_preemption_level;
+ int cpu_simple_lock_count;
+ int cpu_interrupt_level;
+ int cpu_number; /* Logical CPU */
+ int cpu_phys_number; /* Physical CPU */
+ cpu_id_t cpu_id; /* Platform Expert */
+ int cpu_signals; /* IPI events */
+ int cpu_mcount_off; /* mcount recursion */
+ ast_t cpu_pending_ast;
+ int cpu_type;
+ int cpu_subtype;
+ int cpu_threadtype;
+ int cpu_running;
+ struct cpu_core *cpu_core; /* cpu's parent core */
+ uint64_t cpu_rtc_tick_deadline;
+ uint64_t cpu_rtc_intr_deadline;
+ rtclock_timer_t cpu_rtc_timer;
+ rtc_nanotime_t cpu_rtc_nanotime;
+ void *cpu_console_buf;
+ struct processor *cpu_processor;
+ struct cpu_pmap *cpu_pmap;
+ struct mp_desc_table *cpu_desc_tablep;
+ cpu_desc_index_t cpu_desc_index;
+ boolean_t cpu_iflag;
+#ifdef MACH_KDB
+ /* XXX Untested: */
+ int cpu_db_pass_thru;
+ vm_offset_t cpu_db_stacks;
+ struct i386_saved_state *cpu_kdb_saved_state;
+ spl_t cpu_kdb_saved_ipl;
+ int cpu_kdb_is_slave;
+ int cpu_kdb_active;
+#endif /* MACH_KDB */
+ int cpu_reserved1;
} cpu_data_t;
-extern cpu_data_t cpu_data[NCPUS];
+extern cpu_data_t *cpu_data_ptr[];
+extern cpu_data_t cpu_data_master;
/* Macro to generate inline bodies to retrieve per-cpu data fields. */
#define offsetof(TYPE,MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#define CPU_DATA_GET(field,type) \
+#define CPU_DATA_GET(member,type) \
type ret; \
__asm__ volatile ("movl %%gs:%P1,%0" \
: "=r" (ret) \
- : "i" (offsetof(cpu_data_t,field))); \
+ : "i" (offsetof(cpu_data_t,member))); \
return ret;
/*
@@ -69,95 +148,110 @@ extern cpu_data_t cpu_data[NCPUS];
* inline versions of these routines. Everyone outside, must call
* the real thing,
*/
-extern thread_act_t __inline__ get_active_thread(void)
+static inline thread_t
+get_active_thread(void)
{
- CPU_DATA_GET(active_thread,thread_act_t)
+ CPU_DATA_GET(cpu_active_thread,thread_t)
}
-#define current_act_fast() get_active_thread()
-#define current_act() current_act_fast()
-#define current_thread() current_act_fast()->thread
+#define current_thread_fast() get_active_thread()
+#define current_thread() current_thread_fast()
-extern int __inline__ get_preemption_level(void)
+static inline int
+get_preemption_level(void)
{
- CPU_DATA_GET(preemption_level,int)
+ CPU_DATA_GET(cpu_preemption_level,int)
}
-extern int __inline__ get_simple_lock_count(void)
+static inline int
+get_simple_lock_count(void)
{
- CPU_DATA_GET(simple_lock_count,int)
+ CPU_DATA_GET(cpu_simple_lock_count,int)
}
-extern int __inline__ get_interrupt_level(void)
+static inline int
+get_interrupt_level(void)
{
- CPU_DATA_GET(interrupt_level,int)
+ CPU_DATA_GET(cpu_interrupt_level,int)
}
-extern int __inline__ get_cpu_number(void)
+static inline int
+get_cpu_number(void)
{
CPU_DATA_GET(cpu_number,int)
}
-extern int __inline__ get_cpu_phys_number(void)
+static inline int
+get_cpu_phys_number(void)
{
CPU_DATA_GET(cpu_phys_number,int)
}
-
-extern void __inline__ disable_preemption(void)
+static inline struct
+cpu_core * get_cpu_core(void)
{
- register int idx = (int)&((cpu_data_t *)0)->preemption_level;
-
- __asm__ volatile (" incl %%gs:(%0)" : : "r" (idx));
+ CPU_DATA_GET(cpu_core,struct cpu_core *)
}
-extern void __inline__ enable_preemption(void)
+static inline void
+disable_preemption(void)
{
- 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 ("incl %%gs:%P0"
+ :
+ : "i" (offsetof(cpu_data_t, cpu_preemption_level)));
+}
+static inline void
+enable_preemption(void)
+{
assert(get_preemption_level() > 0);
- __asm__ volatile ("decl %%gs:(%0); jne 1f; \
- call %1; 1:"
+ __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");
+ : "i" (offsetof(cpu_data_t, cpu_preemption_level))
+ : "eax", "ecx", "edx", "cc", "memory");
}
-extern void __inline__ enable_preemption_no_check(void)
+static inline void
+enable_preemption_no_check(void)
{
- register int idx = (int)&((cpu_data_t *)0)->preemption_level;
-
assert(get_preemption_level() > 0);
- __asm__ volatile ("decl %%gs:(%0)"
+ __asm__ volatile ("decl %%gs:%P0"
: /* no outputs */
- : "r" (idx)
+ : "i" (offsetof(cpu_data_t, cpu_preemption_level))
: "cc", "memory");
}
-extern void __inline__ mp_disable_preemption(void)
+static inline void
+mp_disable_preemption(void)
{
-#if NCPUS > 1
disable_preemption();
-#endif /* NCPUS > 1 */
}
-extern void __inline__ mp_enable_preemption(void)
+static inline void
+mp_enable_preemption(void)
{
-#if NCPUS > 1
enable_preemption();
-#endif /* NCPUS > 1 */
}
-extern void __inline__ mp_enable_preemption_no_check(void)
+static inline void
+mp_enable_preemption_no_check(void)
{
-#if NCPUS > 1
enable_preemption_no_check();
-#endif /* NCPUS > 1 */
}
-#if 0
-#ifndef __OPTIMIZE__
-#undef extern
-#endif
-#endif
+static inline cpu_data_t *
+current_cpu_datap(void)
+{
+ CPU_DATA_GET(cpu_this, cpu_data_t *);
+}
+
+static inline cpu_data_t *
+cpu_datap(int cpu)
+{
+ assert(cpu_data_ptr[cpu]);
+ return cpu_data_ptr[cpu];
+}
+
+extern cpu_data_t *cpu_data_alloc(boolean_t is_boot_cpu);
#else /* !defined(__GNUC__) */