| | 1 | /* |
| | 2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | |
| | 29 | #include <sys/appleapiopts.h> |
| | 30 | #include <ppc/asm.h> // EXT, LEXT |
| | 31 | #include <machine/cpu_capabilities.h> |
| | 32 | #include <machine/commpage.h> |
| | 33 | |
| | 34 | .text |
| | 35 | .align 2 |
| | 36 | |
| | 37 | #define USER_SPRG3 259 // user-mode-readable encoding for SPRG3 |
| | 38 | |
| | 39 | |
| | 40 | // *********************************************************** |
| | 41 | // * P T H R E A D _ G E T S P E C I F I C _ S P R G 3 _ 3 2 * |
| | 42 | // *********************************************************** |
| | 43 | // |
| | 44 | // For processors with user-readable SPRG3, in 32-bit mode. Called with: |
| | 45 | // r3 = word number |
| | 46 | // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) |
| | 47 | |
| | 48 | pthread_getspecific_sprg3_32: |
| | 49 | slwi r5,r3,2 // convert word# to byte offset |
| | 50 | mfspr r3,USER_SPRG3 // get per-thread cookie |
| | 51 | add r5,r5,r4 // add in offset to first word |
| | 52 | lwzx r3,r3,r5 // get the thread-specific word |
| | 53 | blr |
| | 54 | |
| | 55 | COMMPAGE_DESCRIPTOR(pthread_getspecific_sprg3_32,_COMM_PAGE_PTHREAD_GETSPECIFIC,k64Bit,0,kCommPage32) |
| | 56 | |
| | 57 | |
| | 58 | // *********************************************************** |
| | 59 | // * P T H R E A D _ G E T S P E C I F I C _ S P R G 3 _ 6 4 * |
| | 60 | // *********************************************************** |
| | 61 | // |
| | 62 | // For processors with user-readable SPRG3, in 64-bit mode. This may not be used |
| | 63 | // because the 64-bit ABI uses r13 for the thread-local-data pointer. Called with: |
| | 64 | // r3 = word number |
| | 65 | // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) |
| | 66 | |
| | 67 | pthread_getspecific_sprg3_64: |
| | 68 | sldi r5,r3,3 // convert double-word# to byte offset |
| | 69 | mfspr r3,USER_SPRG3 // get per-thread cookie |
| | 70 | add r5,r5,r4 // add in offset to first word |
| | 71 | ldx r3,r3,r5 // get the thread-specific doubleword |
| | 72 | blr |
| | 73 | |
| | 74 | COMMPAGE_DESCRIPTOR(pthread_getspecific_sprg3_64,_COMM_PAGE_PTHREAD_GETSPECIFIC,k64Bit,0,kCommPage64) |
| | 75 | |
| | 76 | |
| | 77 | // *************************************** |
| | 78 | // * P T H R E A D _ S E L F _ S P R G 3 * |
| | 79 | // *************************************** |
| | 80 | // |
| | 81 | // For processors with user-readable SPRG3. Useable both in 32 and 64-bit modes. |
| | 82 | |
| | 83 | pthread_self_sprg3: |
| | 84 | mfspr r3,USER_SPRG3 // get per-thread cookie |
| | 85 | blr |
| | 86 | |
| | 87 | COMMPAGE_DESCRIPTOR(pthread_self_sprg3,_COMM_PAGE_PTHREAD_SELF,k64Bit,0,kCommPageBoth) |
| | 88 | |
| | 89 | |
| | 90 | // ******************************************************* |
| | 91 | // * P T H R E A D _ G E T S P E C I F I C _ U F T R A P * |
| | 92 | // ******************************************************* |
| | 93 | // |
| | 94 | // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. |
| | 95 | // Called with: |
| | 96 | // r3 = word number |
| | 97 | // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) |
| | 98 | |
| | 99 | pthread_getspecific_uftrap: |
| | 100 | slwi r5,r3,2 // convert word# to byte offset |
| | 101 | li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code |
| | 102 | sc |
| | 103 | add r5,r5,r4 // add in offset to first word |
| | 104 | lwzx r3,r3,r5 // get the thread-specific word |
| | 105 | blr |
| | 106 | |
| | 107 | COMMPAGE_DESCRIPTOR(pthread_getspecific_uftrap,_COMM_PAGE_PTHREAD_GETSPECIFIC,0,k64Bit,kCommPage32) |
| | 108 | |
| | 109 | |
| | 110 | // ***************************************** |
| | 111 | // * P T H R E A D _ S E L F _ U F T R A P * |
| | 112 | // ***************************************** |
| | 113 | // |
| | 114 | // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. |
| | 115 | |
| | 116 | pthread_self_uftrap: |
| | 117 | li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code |
| | 118 | sc // get r3==TLDP |
| | 119 | blr |
| | 120 | |
| | 121 | COMMPAGE_DESCRIPTOR(pthread_self_uftrap,_COMM_PAGE_PTHREAD_SELF,0,k64Bit,kCommPage32) |
projects / apple / xnu.git / blame_incremental