/*
- * Copyright (c) 2000-2005 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@
*
* 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
* 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 <i386/eflags.h>
/*
- * i386_saved_state:
+ * x86_saved_state32/64:
*
* Has been exported to servers. See: mach/i386/thread_status.h
*
* For performance, it is also used directly in syscall exceptions
* if the server has requested i386_THREAD_STATE flavor for the exception
* port.
- *
- * We define the following as an alias for the "esp" field of the
- * structure, because we actually save cr2 here, not the kernel esp.
*/
-#define cr2 esp
/*
* Save area for user floating-point state.
* Allocated only when necessary.
*/
-struct i386_fpsave_state {
+struct x86_fpsave_state {
boolean_t fp_valid;
- struct i386_fp_save fp_save_state;
- struct i386_fp_regs fp_regs;
- struct i386_fx_save fx_save_state __attribute__ ((aligned (16)));
- int fp_save_flavor;
-};
-
-/*
- * v86_assist_state:
- *
- * This structure provides data to simulate 8086 mode
- * interrupts. It lives in the pcb.
- */
-
-struct v86_assist_state {
- vm_offset_t int_table;
- unsigned short int_count;
- unsigned short flags; /* 8086 flag bits */
+ enum {
+ FXSAVE32 = 1,
+ FXSAVE64 = 2
+ } fp_save_layout;
+ struct x86_fx_save fx_save_state __attribute__ ((aligned (16)));
};
-#define V86_IF_PENDING 0x8000 /* unused bit */
-
-/*
- * i386_interrupt_state:
- *
- * This structure describes the set of registers that must
- * be pushed on the current ring-0 stack by an interrupt before
- * we can switch to the interrupt stack.
- */
-struct i386_interrupt_state {
- int gs;
- int fs;
- int es;
- int ds;
- int edx;
- int ecx;
- int eax;
- int eip;
- int cs;
- int efl;
-};
/*
- * i386_kernel_state:
+ * 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 i386_kernel_state {
+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;
};
-/*
- * i386_machine_state:
- *
- * This structure corresponds to special machine state.
- * It lives in the pcb. It is not saved by default.
- */
-
-struct i386_machine_state {
- iopb_tss_t io_tss;
- struct user_ldt * ldt;
- struct i386_fpsave_state *ifps;
- struct v86_assist_state v86s;
-};
typedef struct pcb {
- struct i386_interrupt_state iis[2]; /* interrupt and NMI */
- struct i386_saved_state iss;
- struct i386_machine_state ims;
+ void *sf;
+ x86_saved_state_t *iss;
+ struct x86_fpsave_state *ifps;
#ifdef MACH_BSD
- unsigned long cthread_self; /* for use of cthread package */
+ 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)
+ 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_REGS(ThrAct) (&(ThrAct)->machine.pcb->iss)
+#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 act_machine_state_ptr(ThrAct) (thread_state_t)USER_REGS(ThrAct)
+#define user_pc(ThrAct) (is_saved_state32(USER_STATE(ThrAct)) ? \
+ USER_REGS32(ThrAct)->eip : \
+ USER_REGS64(ThrAct)->isf.rip )
-#define is_user_thread(ThrAct) \
- ((USER_REGS(ThrAct)->efl & EFL_VM) \
- || ((USER_REGS(ThrAct)->cs & 0x03) != 0))
-
-#define user_pc(ThrAct) (USER_REGS(ThrAct)->eip)
-#define user_sp(ThrAct) (USER_REGS(ThrAct)->uesp)
-
struct machine_thread {
/*
* pointer to process control block
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 struct i386_saved_state *get_user_regs(thread_t);
+
+extern void *get_user_regs(thread_t);
extern void *act_thread_csave(void);
extern void act_thread_catt(void *ctx);
* 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)
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