/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_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 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. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ * */ #ifndef _PPC_THREAD_ACT_H_ #define _PPC_THREAD_ACT_H_ #include <mach_kgdb.h> #include <mach/boolean.h> #include <mach/ppc/vm_types.h> #include <mach/thread_status.h> #include <kern/lock.h> #include <kern/clock.h> /* * Kernel state structure * * This holds the kernel state that is saved and restored across context * switches. */ /* * PPC process control block * * In the continuation model, the PCB holds the user context. It is used * on entry to the kernel from user mode, either by system call or trap, * to store the necessary user registers and other state. * * Note that this structure overlays a savearea. Make sure that these * guys are updated in concert with that. */ struct pcb { struct ppc_saved_state ss; struct ppc_exception_state es; struct ppc_float_state fs; unsigned int gas1[6]; /* Force alignment with savearea */ struct ppc_vector_state vec; }; typedef struct pcb *pcb_t; /* * Maps state flavor to number of words in the state: */ extern unsigned int state_count[]; #define USER_REGS(ThrAct) (&(ThrAct)->mact.pcb->ss) #define user_pc(ThrAct) ((ThrAct)->mact.pcb->ss.srr0) #define act_machine_state_ptr(ThrAct) (thread_state_t)USER_REGS(ThrAct) typedef struct MachineThrAct { /* * pointer to process control block control blocks. Potentially * one for each active facility context. They may point to the * same saveareas. */ pcb_t pcb; /* The "normal" savearea */ pcb_t FPU_pcb; /* The floating point savearea */ pcb_t FPU_lvl; /* The floating point context level */ unsigned int FPU_cpu; /* The last processor to enable floating point */ pcb_t VMX_pcb; /* The VMX savearea */ pcb_t VMX_lvl; /* The VMX context level */ unsigned int VMX_cpu; /* The last processor to enable vector */ 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 ksp; /* points to TOP OF STACK or zero */ 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 */ /* 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 /* 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 (1<<(31-ignoreZeroFaultbit)) #define floatUsed (1<<(31-floatUsedbit)) #define vectorUsed (1<<(31-vectorUsedbit)) #define runningVM (1<<(31-runningVMbit)) #define floatCng (1<<(31-floatCngbit)) #define vectorCng (1<<(31-vectorCngbit)) #define timerPop (1<<(31-timerPopbit)) #define userProtKey (1<<(31-userProtKeybit)) #define bbThread (1<<(31-bbThreadbit)) #define bbNoMachSC (1<<(31-bbNoMachSCbit)) #define bbPreemptive (1<<(31-bbPreemptivebit)) #define fvChkb 0 #define fvChk 0x80000000 #ifdef MACH_BSD unsigned long cthread_self; /* for use of cthread package */ #endif } MachineThrAct, *MachineThrAct_t; extern struct ppc_saved_state * find_user_regs(thread_act_t act); extern struct ppc_float_state * find_user_fpu(thread_act_t act); extern void *act_thread_csave(void); extern void act_thread_catt(void *ctx); extern void act_thread_cfree(void *ctx); #endif /* _PPC_THREAD_ACT_H_ */