projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| d7e50217 A |
1 | /* |
| 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. | |
| 7 | * | |
| 8 | * This file contains Original Code and/or Modifications of Original Code | |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| 22 | * | |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | ||
| 26 | #include <sys/appleapiopts.h> | |
| 27 | #include <ppc/asm.h> // EXT, LEXT | |
| 28 | #include <machine/cpu_capabilities.h> | |
| 29 | #include <machine/commpage.h> | |
| 30 | ||
| 31 | .text | |
| 32 | .align 2 | |
| 33 | .globl EXT(pthread_getspecific_sprg3) | |
| 34 | .globl EXT(pthread_getspecific_uftrap) | |
| 35 | .globl EXT(pthread_self_sprg3) | |
| 36 | .globl EXT(pthread_self_uftrap) | |
| 37 | ||
| 38 | #define USER_SPRG3 259 // user-mode-readable encoding for SPRG3 | |
| 39 | ||
| 40 | ||
| 41 | // ***************************************************** | |
| 42 | // * P T H R E A D _ G E T S P E C I F I C _ S P R G 3 * | |
| 43 | // ***************************************************** | |
| 44 | // | |
| 45 | // For processors with user-readable SPRG3. Called with: | |
| 46 | // r3 = word number | |
| 47 | // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) | |
| 48 | ||
| 49 | pthread_getspecific_sprg3: | |
| 50 | slwi r5,r3,2 // convert word# to byte offset | |
| 51 | mfspr r3,USER_SPRG3 // get per-thread cookie | |
| 52 | add r5,r5,r4 // add in offset to first word | |
| 53 | lwzx r3,r3,r5 // get the thread-specific word | |
| 54 | blr | |
| 55 | ||
| 56 | COMMPAGE_DESCRIPTOR(pthread_getspecific_sprg3,_COMM_PAGE_PTHREAD_GETSPECIFIC,k64Bit,0,0) | |
| 57 | ||
| 58 | ||
| 59 | // *************************************** | |
| 60 | // * P T H R E A D _ S E L F _ S P R G 3 * | |
| 61 | // *************************************** | |
| 62 | // | |
| 63 | // For processors with user-readable SPRG3. | |
| 64 | ||
| 65 | pthread_self_sprg3: | |
| 66 | mfspr r3,USER_SPRG3 // get per-thread cookie | |
| 67 | blr | |
| 68 | ||
| 69 | COMMPAGE_DESCRIPTOR(pthread_self_sprg3,_COMM_PAGE_PTHREAD_SELF,k64Bit,0,0) | |
| 70 | ||
| 71 | ||
| 72 | // ******************************************************* | |
| 73 | // * P T H R E A D _ G E T S P E C I F I C _ U F T R A P * | |
| 74 | // ******************************************************* | |
| 75 | // | |
| 76 | // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. | |
| 77 | // Called with: | |
| 78 | // r3 = word number | |
| 79 | // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) | |
| 80 | ||
| 81 | pthread_getspecific_uftrap: | |
| 82 | slwi r5,r3,2 // convert word# to byte offset | |
| 83 | li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code | |
| 84 | sc | |
| 85 | add r5,r5,r4 // add in offset to first word | |
| 86 | lwzx r3,r3,r5 // get the thread-specific word | |
| 87 | blr | |
| 88 | ||
| 89 | COMMPAGE_DESCRIPTOR(pthread_getspecific_uftrap,_COMM_PAGE_PTHREAD_GETSPECIFIC,0,k64Bit,0) | |
| 90 | ||
| 91 | ||
| 92 | // ***************************************** | |
| 93 | // * P T H R E A D _ S E L F _ U F T R A P * | |
| 94 | // ***************************************** | |
| 95 | // | |
| 96 | // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. | |
| 97 | ||
| 98 | pthread_self_uftrap: | |
| 99 | li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code | |
| 100 | sc // get r3==TLDP | |
| 101 | blr | |
| 102 | ||
| 103 | COMMPAGE_DESCRIPTOR(pthread_self_uftrap,_COMM_PAGE_PTHREAD_SELF,0,k64Bit,0) |