/* * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. * * @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 * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * File: machine/thread.h * * This file contains the structure definitions for the thread * state as applied to PPC processors. */ #ifndef _PPC_THREAD_H_ #define _PPC_THREAD_H_ #include <mach/boolean.h> #include <mach/ppc/vm_types.h> #include <mach/thread_status.h> #include <kern/lock.h> #include <kern/clock.h> #include <ppc/savearea.h> /* * Kernel state structure * * This holds the kernel state that is saved and restored across context * switches. */ /* * PPC process control block * * The PCB holds normal context. It does not contain vector or floating point * registers. * */ typedef struct savearea pcb; typedef struct savearea *pcb_t; struct facility_context { savearea_fpu *FPUsave; /* The floating point savearea */ savearea *FPUlevel; /* The floating point context level */ unsigned int FPUcpu; /* The last processor to enable floating point */ unsigned int FPUsync; /* Sync lock */ savearea_vec *VMXsave; /* The VMX savearea */ savearea *VMXlevel; /* The VMX context level */ unsigned int VMXcpu; /* The last processor to enable vector */ unsigned int VMXsync; /* Sync lock */ struct thread *facAct; }; typedef struct facility_context facility_context; /* * Maps state flavor to number of words in the state: */ __private_extern__ unsigned int _MachineStateCount[]; #define USER_REGS(ThrAct) ((ThrAct)->machine.pcb) #define user_pc(ThrAct) ((ThrAct)->machine.pcb->save_srr0) #define act_machine_state_ptr(ThrAct) (thread_state_t)USER_REGS(ThrAct) struct machine_thread { /* * pointer to process control block control blocks. Potentially * one for each active facility context. They may point to the * same saveareas. */ savearea *pcb; /* The "normal" savearea */ savearea *upcb; /* The "normal" user savearea */ facility_context *curctx; /* Current facility context */ facility_context *deferctx; /* Deferred facility context */ facility_context facctx; /* "Normal" facility context */ struct vmmCntrlEntry *vmmCEntry; /* Pointer current emulation context or 0 */ struct vmmCntrlTable *vmmControl; /* Pointer to virtual machine monitor control table */ uint64_t qactTimer; /* Time thread needs to interrupt. This is a single-shot timer. Zero is unset */ unsigned int umwSpace; /* Address space ID for user memory window */ #define umwSwitchAway 0x80000000 /* Context switched away from thread since MapUserAddressWindow */ #define umwSwitchAwayb 0 addr64_t umwRelo; /* Relocation value for user memory window */ unsigned int ksp; /* points to TOP OF STACK or zero */ unsigned int preemption_count; /* preemption count */ struct per_proc_info *PerProc; /* current per processor data */ unsigned int bbDescAddr; /* Points to Blue Box Trap descriptor area in kernel (page aligned) */ unsigned int bbUserDA; /* Points to Blue Box Trap descriptor area in user (page aligned) */ unsigned int bbTableStart; /* Points to Blue Box Trap dispatch area in user */ unsigned int emPendRupts; /* Number of pending emulated interruptions */ unsigned int bbTaskID; /* Opaque task ID for Blue Box threads */ unsigned int bbTaskEnv; /* Opaque task data reference for Blue Box threads */ unsigned int specFlags; /* Special flags */ unsigned int pmcovfl[8]; /* PMC overflow count */ unsigned int perfmonFlags; /* Perfmon facility flags */ unsigned int bbTrap; /* Blue Box trap vector */ unsigned int bbSysCall; /* Blue Box syscall vector */ unsigned int bbInterrupt; /* Blue Box interrupt vector */ unsigned int bbPending; /* Blue Box pending interrupt vector */ /* special flags bits */ #define ignoreZeroFaultbit 0 #define floatUsedbit 1 #define vectorUsedbit 2 #define runningVMbit 4 #define floatCngbit 5 #define vectorCngbit 6 #define timerPopbit 7 #define userProtKeybit 8 #define FamVMenabit 11 #define FamVMmodebit 12 #define perfMonitorbit 13 #define OnProcbit 14 /* NOTE: Do not move or assign bit 31 without changing exception vector ultra fast path code */ #define bbThreadbit 28 #define bbNoMachSCbit 29 #define bbPreemptivebit 30 #define spfReserved1 31 /* See note above */ #define ignoreZeroFault 0x80000000 /* (1<<(31-ignoreZeroFaultbit)) */ #define floatUsed 0x40000000 /* (1<<(31-floatUsedbit)) */ #define vectorUsed 0x20000000 /* (1<<(31-vectorUsedbit)) */ #define runningVM 0x08000000 /* (1<<(31-runningVMbit)) */ #define floatCng 0x04000000 /* (1<<(31-floatCngbit)) */ #define vectorCng 0x02000000 /* (1<<(31-vectorCngbit)) */ #define timerPop 0x01000000 /* (1<<(31-timerPopbit)) */ #define userProtKey 0x00800000 /* (1<<(31-userProtKeybit)) */ #define FamVMena 0x00100000 /* (1<<(31-FamVMenabit)) */ #define FamVMmode 0x00080000 /* (1<<(31-FamVMmodebit)) */ #define perfMonitor 0x00040000 /* (1<<(31-perfMonitorbit)) */ #define OnProc 0x00020000 /* (1<<(31-OnProcbit)) */ #define bbThread 0x00000008 /* (1<<(31-bbThreadbit)) */ #define bbNoMachSC 0x00000004 /* (1<<(31-bbNoMachSCbit)) */ #define bbPreemptive 0x00000002 /* (1<<(31-bbPreemptivebit)) */ #define fvChkb 0 #define fvChk 0x80000000 #ifdef MACH_BSD uint64_t cthread_self; /* for use of cthread package */ #endif }; extern struct savearea *find_user_regs(thread_t); extern struct savearea *get_user_regs(thread_t); extern struct savearea_fpu *find_user_fpu(thread_t); extern struct savearea_vec *find_user_vec(thread_t); extern struct savearea_vec *find_user_vec_curr(void); extern int thread_enable_fpe(thread_t act, int onoff); extern struct savearea *find_kern_regs(thread_t); extern void *act_thread_csave(void); extern void act_thread_catt(void *ctx); extern void act_thread_cfree(void *ctx); /* * Return address of the function that called current function, given * address of the first parameter of current function. We can't * do it this way, since parameter was copied from a register * into a local variable. Call an assembly sub-function to * return this. */ extern vm_offset_t getrpc(void); #define GET_RETURN_PC(addr) getrpc() #define STACK_IKS(stack) \ ((vm_offset_t)(((vm_offset_t)stack)+KERNEL_STACK_SIZE)-FM_SIZE) /* * Defining this indicates that MD code will supply an exception() * routine, conformant with kern/exception.c (dependency alert!) * but which does wonderfully fast, machine-dependent magic. */ #define MACHINE_FAST_EXCEPTION 1 #endif /* _PPC_THREAD_H_ */