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Annotation of kernel/machdep/ppc/PseudoKernel.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:        File:           PseudoKernelPriv.h
        !            27: 
        !            28:        Contains:       Interfaces for the TruBlue environment's PseudoKernel
        !            29: 
        !            30:        Version:        Rhapsody
        !            31: 
        !            32:        Copyright:      ) 1996-1997 by Apple Computer, Inc., all rights reserved.
        !            33: 
        !            34:        File Ownership:
        !            35: 
        !            36:                DRI:            Bob Abeles
        !            37: 
        !            38:                Other Contact:  Jeff Robbin
        !            39: 
        !            40:                Technology:     TruBlue& Virtual Machine
        !            41: 
        !            42:        Writers:
        !            43: 
        !            44:                (JM3)   Jim Murphy
        !            45:                (BEA)   Bob Abeles
        !            46: 
        !            47:        Change History (most recent first):
        !            48: 
        !            49: */
        !            50: 
        !            51: 
        !            52: typedef unsigned char  UInt8;
        !            53: typedef unsigned short UInt16;
        !            54: typedef unsigned long  UInt32;
        !            55: 
        !            56: 
        !            57: /* Support firmware CallPseudoKernel architectural extension */
        !            58: 
        !            59: struct CallPseudoKernelDescriptor {
        !            60:        UInt32                          pc;
        !            61:        UInt32                          gpr0;
        !            62:        UInt32                          intControlAddr;
        !            63:        UInt32                          newState;
        !            64:        UInt32                          intStateMask;
        !            65:        UInt32                          intCR2Mask;
        !            66:        UInt32                          intCR2Shift;
        !            67:        UInt32                          sysContextState;
        !            68: };
        !            69: typedef struct CallPseudoKernelDescriptor CallPseudoKernelDescriptor;
        !            70: typedef CallPseudoKernelDescriptor * CallPseudoKernelDescriptorPtr;
        !            71: typedef CallPseudoKernelDescriptor CPKD_t;
        !            72: 
        !            73: 
        !            74: 
        !            75: /* Support firmware ExitPseudoKernel architectural extension */
        !            76: 
        !            77: struct ExitPseudoKernelDescriptor {
        !            78:        UInt32                          pc;
        !            79:        UInt32                          sp;
        !            80:        UInt32                          gpr0;
        !            81:        UInt32                          gpr3;
        !            82:        UInt32                          cr;
        !            83:        UInt32                          intControlAddr;
        !            84:        UInt32                          newState;
        !            85:        UInt32                          intStateMask;
        !            86:        UInt32                          intCR2Mask;
        !            87:        UInt32                          intCR2Shift;
        !            88:        UInt32                          sysContextState;
        !            89:        UInt32                          intPendingMask;
        !            90:        UInt32                          intPendingPC;
        !            91:        UInt32                          msrUpdate;
        !            92: };
        !            93: typedef struct ExitPseudoKernelDescriptor ExitPseudoKernelDescriptor;
        !            94: typedef ExitPseudoKernelDescriptor * ExitPseudoKernelDescriptorPtr;
        !            95: typedef ExitPseudoKernelDescriptor EPKD_t;
        !            96: 
        !            97: 
        !            98: //
        !            99: //     EmulatorDescriptor
        !           100: //
        !           101: //     Emulator image descriptor record appended to the 68K emulator
        !           102: //     image by the BootPowerPC project. 
        !           103: //
        !           104: struct EmulatorDescriptor {
        !           105:        UInt8           regMap[16];             // table mapping 68K D0..D7, A0..A7 register to PowerPC registers
        !           106:        UInt32          bootstrapVersionOffset; // offset within emulator data page of the bootstrap version string
        !           107:        UInt32          ecbOffset;              // offset within emulator data page of the ECB
        !           108:        UInt32          intModeLevelOffset;     // offset within emulator data page of the interrupt mode level
        !           109:        UInt32          entryAddress;           // offset within text of the emulator's main entry point
        !           110:        UInt32          kcallTrapTableOffset;   // offset within text of the nanokernel(!) call trap table
        !           111:        UInt32          postIntMask;            // post interrupt mask
        !           112:        UInt32          clearIntMask;           // clear interrupt mask
        !           113:        UInt32          testIntMask;            // test interrupt mask
        !           114:        UInt32          codeSize;               // total size of emulator object code (interpretive + DR)
        !           115:        UInt32          hashTableSize;          // size of DR emulator's hash table
        !           116:        UInt32          drCodeStartOffset;      // offset within text of the DR emulator's object code
        !           117:        UInt32          drInitOffset;           // offset within DR emulator of its initialization entry point
        !           118:        UInt32          drAllocateCache;        // offset within DR emulator of its cache allocation entry point
        !           119:        UInt32          dispatchTableOffset;    // offset within text of the encoded instruction dispatch table 
        !           120: };
        !           121: typedef struct EmulatorDescriptor EmulatorDescriptor;
        !           122: typedef EmulatorDescriptor *EmulatorDescriptorPtr;
        !           123: 
        !           124:        
        !           125: enum {
        !           126:                                                                                        // The following define the UInt32 gInterruptState
        !           127:        kInUninitialized        =       0,                      // State not yet initialized
        !           128:        kInPseudoKernel         =       1,                      // Currently executing within pseudo kernel
        !           129:        kInSystemContext        =       2,                      // Currently executing within the system (emulator) context
        !           130:        kInAlternateContext     =       3,                      // Currently executing within an alternate (native) context
        !           131:        kInExceptionHandler     =       4,                      // Currently executing an exception handler
        !           132:        kOutsideBlue            =       5,                      // Currently executing outside of the blue box
        !           133: 
        !           134:        kInterruptStateMask     =       0x000F0000,     // Mask to extract interrupt state from gInterruptState
        !           135:        kInterruptStateShift    =       16,                     // Shift count to align interrupt state
        !           136: 
        !           137:        kBackupCR2Mask          =       0x0000000F,     // Mask to extract backup CR2 from gInterruptState
        !           138:        kCR2ToBackupShift       =       31-11,          // Shift count to align CR2 into the backup CR2 of gInterruptState
        !           139:                                                                                        //  (and vice versa)
        !           140:        kCR2Mask                =       0x00F00000  // Mask to extract CR2 from the PPC CR register 
        !           141: };
        !           142: 
        !           143: 
        !           144: enum {
        !           145:        kcReturnFromException           = 0,    
        !           146:        kcRunAlternateContext           = 1,
        !           147:        kcResetSystem                           = 2,
        !           148:        kcVMDispatch                            = 3,
        !           149:        kcPrioritizeInterrupts          = 4,
        !           150:        kcPowerDispatch                         = 5,
        !           151:        kcRTASDispatch                          = 6,
        !           152:        kcGetAdapterProcPtrsPPC         = 12,
        !           153:        kcGetAdapterProcPtrs            = 13,
        !           154:        kcCallAdapterProc                       = 14,
        !           155:        kcSystemCrash                           = 15
        !           156: };

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