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Annotation of XNU/iokit/Kernel/ppc/IOAsmSupport.s, revision 1.1.1.1

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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