X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/ff6e181ae92fc6f1e89841290f461d1f2f9badd9..cf7d32b81c573a0536dc4da4157f9c26f8d0bed3:/osfmk/i386/thread.h?ds=sidebyside diff --git a/osfmk/i386/thread.h b/osfmk/i386/thread.h index 926bd0a13..badd5491f 100644 --- a/osfmk/i386/thread.h +++ b/osfmk/i386/thread.h @@ -1,14 +1,19 @@ /* - * 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 @@ -18,7 +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@ @@ -74,7 +79,7 @@ #include /* - * i386_saved_state: + * x86_saved_state32/64: * * Has been exported to servers. See: mach/i386/thread_status.h * @@ -84,120 +89,79 @@ * 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 @@ -206,9 +170,27 @@ struct machine_thread { 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); @@ -221,7 +203,7 @@ extern void act_thread_cfree(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; }; @@ -234,7 +216,7 @@ struct i386_exception_link { */ #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)