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Annotation of XNU/iokit/Kernel/ppc/IOAsmSupport.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22:  /*
        !            23:  * Copyright (c) 1997-1998 Apple Computer, Inc.
        !            24:  *
        !            25:  *
        !            26:  * HISTORY
        !            27:  *
        !            28:  * sdouglas  22 Oct 97 - first checked in from DriverServices
        !            29:  * sdouglas  28 Jul 98 - start IOKit
        !            30:  */
        !            31: 
        !            32: #include <architecture/ppc/asm_help.h>
        !            33: 
        !            34: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
        !            35: ;
        !            36: ; ENTRY                functionName
        !            37: ;
        !            38: ; Assembly directives to begin an exported function.
        !            39: ;
        !            40: ; Takes: functionName - name of the exported function
        !            41: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
        !            42: 
        !            43: .macro ENTRY
        !            44:        .text
        !            45:        .align          2
        !            46:        .globl          $0
        !            47: $0:
        !            48: .endmacro
        !            49: 
        !            50: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
        !            51: 
        !            52: /*
        !            53: 
        !            54: OSStatus SynchronizeIO( void )
        !            55: 
        !            56: */
        !            57: 
        !            58:        ENTRY   __eSynchronizeIO
        !            59: 
        !            60:        li      r0,     0
        !            61:        eieio
        !            62:        li      r3,     0
        !            63:        blr
        !            64: 
        !            65: /*
        !            66: 
        !            67: OSStatus CallTVector_NoRecover(
        !            68:            void * p1, void * p2, void * p3, void * p4, void * p5, void * p6,   // r3-8
        !            69:            LogicalAddress entry )                                              // r9
        !            70: 
        !            71: */
        !            72: 
        !            73: #define PARAM_SIZE     24
        !            74: #define FM_SIZE                64
        !            75: #define FM_LR_SAVE     8
        !            76: #define FM_TOC_SAVE    20
        !            77: 
        !            78:        ENTRY   _CallTVector
        !            79: 
        !            80: #if 1
        !            81:        stw     r2,     FM_TOC_SAVE(r1)
        !            82:        lwz     r0,     0(r9)
        !            83:        lwz     r2,     4(r9)
        !            84:        mtspr   ctr,    r0
        !            85:        bctr
        !            86: 
        !            87: #else
        !            88:        mflr    r0
        !            89:        stw     r0,     FM_LR_SAVE(r1)
        !            90:        stw     r2,     FM_TOC_SAVE(r1)
        !            91: 
        !            92:        stwu    r1,     -(PARAM_SIZE+FM_SIZE)(r1)
        !            93:        
        !            94:        lwz     r2,     4(r9)
        !            95:        lwz     r0,     0(r9)
        !            96:        mtspr   lr,     r0
        !            97:        mfspr   r12,    lr
        !            98:        blrl
        !            99: 
        !           100:        addi    r1,     r1,(PARAM_SIZE+FM_SIZE)
        !           101:        lwz     r2,     FM_TOC_SAVE(r1)
        !           102:        lwz     r0,     FM_LR_SAVE(r1)
        !           103:        mtlr    r0
        !           104:        blr
        !           105: #endif
        !           106: 
        !           107: /*
        !           108:  * Seemingly unused references from cpp statically initialized objects.
        !           109:  */
        !           110: 
        !           111: .globl .constructors_used
        !           112: .constructors_used = 0
        !           113: .globl .destructors_used
        !           114: .destructors_used = 0

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