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Annotation of kernel/mach/i386/thread_status.h, revision 1.1.1.1

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:  * Copyright (c) 1992 NeXT Computer, Inc.
                     27:  *
                     28:  * Intel386 Family:    External thread state.
                     29:  *
                     30:  * HISTORY
                     31:  *
                     32:  * 5 April 1992 ? at NeXT
                     33:  *     Created.
                     34:  */
                     35: 
                     36: #import <architecture/i386/frame.h>
                     37: #import <architecture/i386/fpu.h>
                     38: 
                     39: /*
                     40:  * Main thread state consists of
                     41:  * general registers, segment registers,
                     42:  * eip and eflags.
                     43:  */
                     44: 
                     45: #define i386_THREAD_STATE      -1
                     46: 
                     47: typedef struct {
                     48:     unsigned int       eax;
                     49:     unsigned int       ebx;
                     50:     unsigned int       ecx;
                     51:     unsigned int       edx;
                     52:     unsigned int       edi;
                     53:     unsigned int       esi;
                     54:     unsigned int       ebp;
                     55:     unsigned int       esp;
                     56:     unsigned int       ss;
                     57:     unsigned int       eflags;
                     58:     unsigned int       eip;
                     59:     unsigned int       cs;
                     60:     unsigned int       ds;
                     61:     unsigned int       es;
                     62:     unsigned int       fs;
                     63:     unsigned int       gs;
                     64: } i386_thread_state_t;
                     65: 
                     66: #define i386_THREAD_STATE_COUNT                \
                     67:     ( sizeof (i386_thread_state_t) / sizeof (int) )
                     68: 
                     69: /*
                     70:  * Default segment register values.
                     71:  */
                     72:     
                     73: #define USER_CODE_SELECTOR     0x000f
                     74: #define USER_DATA_SELECTOR     0x0017
                     75: #define KERN_CODE_SELECTOR     0x0008
                     76: #define KERN_DATA_SELECTOR     0x0010
                     77: 
                     78: /*
                     79:  * Thread floating point state
                     80:  * includes FPU environment as
                     81:  * well as the register stack.
                     82:  */
                     83:  
                     84: #define i386_THREAD_FPSTATE    -2
                     85: 
                     86: typedef struct {
                     87:     fp_env_t           environ;
                     88:     fp_stack_t         stack;
                     89: } i386_thread_fpstate_t;
                     90: 
                     91: #define i386_THREAD_FPSTATE_COUNT      \
                     92:     ( sizeof (i386_thread_fpstate_t) / sizeof (int) )
                     93: 
                     94: /*
                     95:  * Extra state that may be
                     96:  * useful to exception handlers.
                     97:  */
                     98: 
                     99: #define i386_THREAD_EXCEPTSTATE        -3
                    100: 
                    101: typedef struct {
                    102:     unsigned int       trapno;
                    103:     err_code_t         err;
                    104: } i386_thread_exceptstate_t;
                    105: 
                    106: #define i386_THREAD_EXCEPTSTATE_COUNT  \
                    107:     ( sizeof (i386_thread_exceptstate_t) / sizeof (int) )
                    108: 
                    109: /*
                    110:  * Per-thread variable used
                    111:  * to store 'self' id for cthreads.
                    112:  */
                    113:  
                    114: #define i386_THREAD_CTHREADSTATE       -4
                    115:  
                    116: typedef struct {
                    117:     unsigned int       self;
                    118: } i386_thread_cthreadstate_t;
                    119: 
                    120: #define i386_THREAD_CTHREADSTATE_COUNT \
                    121:     ( sizeof (i386_thread_cthreadstate_t) / sizeof (int) )

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