/* * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <sys/appleapiopts.h> #include <ppc/asm.h> // EXT, LEXT #include <machine/cpu_capabilities.h> #include <machine/commpage.h> .text .align 2 #define USER_SPRG3 259 // user-mode-readable encoding for SPRG3 // *********************************************************** // * 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 * // *********************************************************** // // For processors with user-readable SPRG3, in 32-bit mode. Called with: // r3 = word number // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) pthread_getspecific_sprg3_32: slwi r5,r3,2 // convert word# to byte offset mfspr r3,USER_SPRG3 // get per-thread cookie add r5,r5,r4 // add in offset to first word lwzx r3,r3,r5 // get the thread-specific word blr COMMPAGE_DESCRIPTOR(pthread_getspecific_sprg3_32,_COMM_PAGE_PTHREAD_GETSPECIFIC,k64Bit,0,kCommPage32) // *********************************************************** // * 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 * // *********************************************************** // // For processors with user-readable SPRG3, in 64-bit mode. This may not be used // because the 64-bit ABI uses r13 for the thread-local-data pointer. Called with: // r3 = word number // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) pthread_getspecific_sprg3_64: sldi r5,r3,3 // convert double-word# to byte offset mfspr r3,USER_SPRG3 // get per-thread cookie add r5,r5,r4 // add in offset to first word ldx r3,r3,r5 // get the thread-specific doubleword blr COMMPAGE_DESCRIPTOR(pthread_getspecific_sprg3_64,_COMM_PAGE_PTHREAD_GETSPECIFIC,k64Bit,0,kCommPage64) // *************************************** // * P T H R E A D _ S E L F _ S P R G 3 * // *************************************** // // For processors with user-readable SPRG3. Useable both in 32 and 64-bit modes. pthread_self_sprg3: mfspr r3,USER_SPRG3 // get per-thread cookie blr COMMPAGE_DESCRIPTOR(pthread_self_sprg3,_COMM_PAGE_PTHREAD_SELF,k64Bit,0,kCommPageBoth) // ******************************************************* // * P T H R E A D _ G E T S P E C I F I C _ U F T R A P * // ******************************************************* // // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. // Called with: // r3 = word number // r4 = offset to thread specific data (_PTHREAD_TSD_OFFSET) pthread_getspecific_uftrap: slwi r5,r3,2 // convert word# to byte offset li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code sc add r5,r5,r4 // add in offset to first word lwzx r3,r3,r5 // get the thread-specific word blr COMMPAGE_DESCRIPTOR(pthread_getspecific_uftrap,_COMM_PAGE_PTHREAD_GETSPECIFIC,0,k64Bit,kCommPage32) // ***************************************** // * P T H R E A D _ S E L F _ U F T R A P * // ***************************************** // // For processors that use the Ultra-Fast-Trap to get the thread-specific ptr. pthread_self_uftrap: li r0,0x7FF2 // magic "pthread_self" ultra-fast trap code sc // get r3==TLDP blr COMMPAGE_DESCRIPTOR(pthread_self_uftrap,_COMM_PAGE_PTHREAD_SELF,0,k64Bit,kCommPage32)