Return to thread.h CVS log

Up to [Apple Darwin 0.x] / kernel / machdep / ppc

Annotation of kernel/machdep/ppc/thread.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* 
        !            26:  * Mach Operating System
        !            27:  * Copyright (c) 1989 Carnegie-Mellon University
        !            28:  * Copyright (c) 1988 Carnegie-Mellon University
        !            29:  * Copyright (c) 1987 Carnegie-Mellon University
        !            30:  * All rights reserved.  The CMU software License Agreement specifies
        !            31:  * the terms and conditions for use and redistribution.
        !            32:  */
        !            33: /*
        !            34:  *     File:   vax/thread.h
        !            35:  *     Author: Avadis Tevanian, Jr.
        !            36:  *
        !            37:  *     Copyright (C) 1987, Avadis Tevanian, Jr.
        !            38:  *
        !            39:  *     This file defines machine specific, thread related structures,
        !            40:  *     variables and macros.
        !            41:  */
        !            42: 
        !            43: #ifndef        _MACHDEP_PPC_THREAD_
        !            44: #define _MACHDEP_PPC_THREAD_
        !            45: 
        !            46: #include <kern/kernel_stack.h>
        !            47: #include <mach/ppc/thread_status.h>
        !            48: 
        !            49: #define CURRENT_THREAD
        !            50: #include <machdep/ppc/cpu_data.h>
        !            51: 
        !            52: /*
        !            53:  * PPC process control block
        !            54:  *
        !            55:  * In the continuation model, the PCB holds the user context. It is used
        !            56:  * on entry to the kernel from user mode, either by system call or trap,
        !            57:  * to store the necessary user registers and other state.
        !            58:  */
        !            59: struct pcb
        !            60: {
        !            61:        struct ppc_saved_state ss;
        !            62:        struct ppc_exception_state es;
        !            63:        struct ppc_float_state fs;
        !            64:        unsigned ksp;                   /* points to TOP OF STACK or zero */
        !            65:        unsigned sr0;           /* TODO NMGS hack?? sort out user space */
        !            66:        unsigned long cthread_self;     /* for use of cthread package */
        !            67:         unsigned flags;
        !            68: };
        !            69: 
        !            70: typedef struct pcb *pcb_t;
        !            71: 
        !            72: struct ppc_kernel_state
        !            73: {
        !            74:         pcb_t    pcb;           /* Efficiency hack, I am told :-) */
        !            75:         unsigned r1;            /* Stack pointer */
        !            76:         unsigned r2;            /* TOC/GOT pointer */
        !            77:         unsigned r13[32-13];    /* Callee saved `non-volatile' registers */
        !            78:         unsigned lr;            /* `return address' used in continuation */
        !            79:         unsigned cr;
        !            80:                                 /* Floating point not used, so not saved */
        !            81: };
        !            82: 
        !            83: #include <machdep/ppc/fpu.h>
        !            84: #define pcb_synch(thread) fp_state_save(thread)
        !            85: 
        !            86: #define USER_REGS(thread)       (&(thread)->pcb->ss)
        !            87: 
        !            88: #define STACK_IKS(stack)                \
        !            89:         (((struct ppc_kernel_state *)(((vm_offset_t)stack)+KERNEL_STACK_SIZE))-1)
        !            90: 
        !            91: #ifndef __ASSEMBLER__
        !            92: /*
        !            93:  * These routines are called from from task_create() to 
        !            94:  * manage any pcb state common to all threads in a task 
        !            95:  * via the "task->pcb_common" pointer. Currently null for sparc.
        !            96:  */
        !            97: #define pcb_common_init(task)
        !            98: #define pcb_common_terminate(task)
        !            99: #endif  /* !__ASSEMBLER__ */
        !           100: 
        !           101: #endif /* _MACHDEP_PPC_THREAD_ */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.