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 48pthread_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 67pthread_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 83pthread_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 99pthread_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 116pthread_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) 122