/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_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 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
#include <mach/boolean.h>
#include <mach/i386/vm_types.h>
#include <mach/i386/fp_reg.h>
+#include <mach/thread_status.h>
#include <kern/lock.h>
#include <i386/seg.h>
#include <i386/tss.h>
#include <i386/eflags.h>
-#include <i386/thread_act.h>
+
+/*
+ * x86_saved_state32/64:
+ *
+ * Has been exported to servers. See: mach/i386/thread_status.h
+ *
+ * This structure corresponds to the state of user registers
+ * as saved upon kernel entry. It lives in the pcb.
+ * It is also pushed onto the stack for exceptions in the kernel.
+ * For performance, it is also used directly in syscall exceptions
+ * if the server has requested i386_THREAD_STATE flavor for the exception
+ * port.
+ */
+
+/*
+ * Save area for user floating-point state.
+ * Allocated only when necessary.
+ */
+
+struct x86_fpsave_state {
+ boolean_t fp_valid;
+ enum {
+ FXSAVE32 = 1,
+ FXSAVE64 = 2
+ } fp_save_layout;
+ struct x86_fx_save fx_save_state __attribute__ ((aligned (16)));
+};
+
+
+/*
+ * x86_kernel_state32:
+ *
+ * This structure corresponds to the state of kernel registers
+ * as saved in a context-switch. It lives at the base of the stack.
+ * kernel only runs in 32 bit mode for now
+ */
+
+struct x86_kernel_state32 {
+ int k_ebx; /* kernel context */
+ int k_esp;
+ int k_ebp;
+ int k_edi;
+ int k_esi;
+ int k_eip;
+ /*
+ * Kernel stacks are 16-byte aligned with a 4-byte i386_exception_link at
+ * the top, followed by an x86_kernel_state32. After both structs have
+ * been pushed, we want to be 16-byte aligned. A dummy int gets us there.
+ */
+ int dummy;
+};
+
+
+typedef struct pcb {
+ void *sf;
+ x86_saved_state_t *iss;
+ struct x86_fpsave_state *ifps;
+#ifdef MACH_BSD
+ uint64_t cthread_self; /* for use of cthread package */
+ struct real_descriptor cthread_desc;
+ unsigned long uldt_selector; /* user ldt selector to set */
+ struct real_descriptor uldt_desc; /* the actual user setable ldt data */
+#endif
+ decl_simple_lock_data(,lock);
+ uint64_t iss_pte0;
+ uint64_t iss_pte1;
+ void *ids;
+ uint32_t arg_store_valid;
+} *pcb_t;
+
+
+/*
+ * Maps state flavor to number of words in the state:
+ */
+__private_extern__ unsigned int _MachineStateCount[];
+
+#define USER_STATE(ThrAct) ((ThrAct)->machine.pcb->iss)
+#define USER_REGS32(ThrAct) (saved_state32(USER_STATE(ThrAct)))
+#define USER_REGS64(ThrAct) (saved_state64(USER_STATE(ThrAct)))
+
+#define user_pc(ThrAct) (is_saved_state32(USER_STATE(ThrAct)) ? \
+ USER_REGS32(ThrAct)->eip : \
+ USER_REGS64(ThrAct)->isf.rip )
+
+
+struct machine_thread {
+ /*
+ * pointer to process control block
+ * (actual storage may as well be here, too)
+ */
+ struct pcb xxx_pcb;
+ pcb_t pcb;
+
+ uint32_t specFlags;
+#define OnProc 0x1
+#if CONFIG_DTRACE
+#define CopyIOActive 0x2 /* Checked to ensure DTrace actions do not re-enter copyio(). */
+#endif /* CONFIG_DTRACE */
+
+ struct {
+ user_addr_t user_base;
+ } copy_window[NCOPY_WINDOWS];
+ int nxt_window;
+ int copyio_state;
+#define WINDOWS_DIRTY 0
+#define WINDOWS_CLEAN 1
+#define WINDOWS_CLOSED 2
+#define WINDOWS_OPENED 3
+ uint64_t physwindow_pte;
+ int physwindow_busy;
+};
+
+
+extern void *get_user_regs(thread_t);
+
+extern void *act_thread_csave(void);
+extern void act_thread_catt(void *ctx);
+extern void act_thread_cfree(void *ctx);
/*
* i386_exception_link:
* It points to the current thread`s user registers.
*/
struct i386_exception_link {
- struct i386_saved_state *saved_state;
+ x86_saved_state_t *saved_state;
};
*/
#define STACK_IKS(stack) \
- ((struct i386_kernel_state *)((stack) + KERNEL_STACK_SIZE) - 1)
+ ((struct x86_kernel_state32 *)((stack) + KERNEL_STACK_SIZE) - 1)
#define STACK_IEL(stack) \
((struct i386_exception_link *)STACK_IKS(stack) - 1)
-#if NCPUS > 1
-#include <i386/mp_desc.h>
-#endif
-
-/*
- * Boot-time data for master (or only) CPU
- */
-extern struct fake_descriptor idt[IDTSZ];
-extern struct fake_descriptor gdt[GDTSZ];
-extern struct fake_descriptor ldt[LDTSZ];
-extern struct i386_tss ktss;
-#if MACH_KDB
-extern char db_stack_store[];
-extern char db_task_stack_store[];
-extern struct i386_tss dbtss;
-extern void db_task_start(void);
-#endif /* MACH_KDB */
-#if NCPUS > 1
-#define curr_gdt(mycpu) (mp_gdt[mycpu])
-#define curr_ktss(mycpu) (mp_ktss[mycpu])
-#else
-#define curr_gdt(mycpu) (gdt)
-#define curr_ktss(mycpu) (&ktss)
-#endif
-
-#define gdt_desc_p(mycpu,sel) \
- ((struct real_descriptor *)&curr_gdt(mycpu)[sel_idx(sel)])
-
/*
* Return address of the function that called current function, given
* address of the first parameter of current function.
*/
#define MACHINE_FAST_EXCEPTION 1
-/*
- * MD Macro to fill up global stack state,
- * keeping the MD structure sizes + games private
- */
-#define MACHINE_STACK_STASH(stack) \
-MACRO_BEGIN \
- mp_disable_preemption(); \
- kernel_stack[cpu_number()] = (stack) + \
- (KERNEL_STACK_SIZE - sizeof (struct i386_exception_link) \
- - sizeof (struct i386_kernel_state)), \
- active_stacks[cpu_number()] = (stack); \
- mp_enable_preemption(); \
-MACRO_END
-
#endif /* _I386_THREAD_H_ */
projects / apple / xnu.git / blobdiff