/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_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. 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
- * 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
+ * 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.
+ *
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* 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 x86_fpsave_state {
+struct i386_fpsave_state {
boolean_t fp_valid;
- enum {
- FXSAVE32 = 1,
- FXSAVE64 = 2
- } fp_save_layout;
- struct x86_fx_save fx_save_state __attribute__ ((aligned (16)));
+ 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 */
+};
+#define V86_IF_PENDING 0x8000 /* unused bit */
/*
- * x86_kernel_state32:
+ * 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:
*
* 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 {
+struct i386_kernel_state {
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 {
- void *sf;
- x86_saved_state_t *iss;
- struct x86_fpsave_state *ifps;
+ struct i386_interrupt_state iis[2]; /* interrupt and NMI */
+ struct i386_saved_state iss;
+ struct i386_machine_state ims;
#ifdef MACH_BSD
- uint64_t cthread_self; /* for use of cthread package */
+ unsigned long 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 */
+ 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;
+ decl_simple_lock_data(,lock)
} *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_REGS(ThrAct) (&(ThrAct)->machine.pcb->iss)
-#define user_pc(ThrAct) (is_saved_state32(USER_STATE(ThrAct)) ? \
- USER_REGS32(ThrAct)->eip : \
- USER_REGS64(ThrAct)->isf.rip )
+#define act_machine_state_ptr(ThrAct) (thread_state_t)USER_REGS(ThrAct)
+#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
-
- 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 struct i386_saved_state *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 {
- x86_saved_state_t *saved_state;
+ struct i386_saved_state *saved_state;
};
*/
#define STACK_IKS(stack) \
- ((struct x86_kernel_state32 *)((stack) + KERNEL_STACK_SIZE) - 1)
+ ((struct i386_kernel_state *)((stack) + KERNEL_STACK_SIZE) - 1)
#define STACK_IEL(stack) \
((struct i386_exception_link *)STACK_IKS(stack) - 1)
projects / apple / xnu.git / blobdiff