projects / apple / xnu.git / blame
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|---|---|---|
| 55e303ae A |
1 | /* |
| 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
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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. | |
| 55e303ae | 11 | * |
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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 | |
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14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
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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. | |
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19 | * |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | ||
| 23 | #define ASSEMBLER | |
| 24 | #include <sys/appleapiopts.h> | |
| 25 | #include <ppc/asm.h> // EXT, LEXT | |
| 26 | #include <machine/cpu_capabilities.h> | |
| 27 | #include <machine/commpage.h> | |
| 28 | ||
| 29 | .text | |
| 30 | .align 2 | |
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31 | |
| 32 | ||
| 33 | // ********************************************* | |
| 34 | // * M A C H _ A B S O L U T E _ T I M E _ 3 2 * | |
| 35 | // ********************************************* | |
| 36 | ||
| 37 | mach_absolute_time_32: | |
| 38 | 1: | |
| 39 | mftbu r3 | |
| 40 | mftb r4 | |
| 41 | mftbu r5 | |
| 42 | cmplw r3,r5 | |
| 43 | beqlr+ | |
| 44 | b 1b | |
| 45 | ||
| 91447636 | 46 | COMMPAGE_DESCRIPTOR(mach_absolute_time_32,_COMM_PAGE_ABSOLUTE_TIME,0,k64Bit,kCommPage32) |
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47 | |
| 48 | ||
| 49 | // ********************************************* | |
| 50 | // * M A C H _ A B S O L U T E _ T I M E _ 6 4 * | |
| 51 | // ********************************************* | |
| 52 | // | |
| 91447636 | 53 | // This is the version that is called in 32-bit mode, so we return the TBR in r3 and r4. |
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54 | |
| 55 | mach_absolute_time_64: | |
| 56 | mftb r4 | |
| 57 | srdi r3,r4,32 | |
| 58 | blr | |
| 59 | ||
| 91447636 A |
60 | COMMPAGE_DESCRIPTOR(mach_absolute_time_64,_COMM_PAGE_ABSOLUTE_TIME,k64Bit,0,kCommPage32) |
| 61 | ||
| 62 | ||
| 63 | // ************************************************* | |
| 64 | // * M A C H _ A B S O L U T E _ T I M E _ L P 6 4 * | |
| 65 | // ************************************************* | |
| 66 | // | |
| 67 | // This is the version that is called in 64-bit mode, so we return the TBR in r3. | |
| 68 | ||
| 69 | mach_absolute_time_lp64: | |
| 70 | mftb r3 | |
| 71 | blr | |
| 72 | ||
| 73 | COMMPAGE_DESCRIPTOR(mach_absolute_time_lp64,_COMM_PAGE_ABSOLUTE_TIME,k64Bit,0,kCommPage64) | |
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74 | |
| 75 |