1/* 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_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. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24/* Get the cpu_capabilities bit vector out of the comm page */ 25 26#define __APPLE_API_PRIVATE 27#include <machine/cpu_capabilities.h> 28#undef __APPLE_API_PRIVATE 29 30#if defined(__x86_64__) 31 32 .text 33 .align 2, 0x90 34 .globl __get_cpu_capabilities 35__get_cpu_capabilities: 36 movq $(_COMM_PAGE_CPU_CAPABILITIES64), %rax 37 movq (%rax), %rax 38 ret 39 40#elif defined(__i386__) 41 42 .text 43 .align 2, 0x90 44 .globl __get_cpu_capabilities 45__get_cpu_capabilities: 46 movl _COMM_PAGE_CPU_CAPABILITIES64, %eax 47 movl _COMM_PAGE_CPU_CAPABILITIES64+4, %edx 48 ret 49 50#elif defined(__arm__) 51 52 .text 53 .align 2 54 .globl __get_cpu_capabilities 55__get_cpu_capabilities: 56 mov r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x000000ff) 57 orr r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x0000ff00) 58 orr r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x00ff0000) 59 orr r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0xff000000) 60 ldr r0, [r0] 61 bx lr 62 63#elif defined(__arm64__) 64 65 .text 66 .align 2 67 .globl __get_cpu_capabilities 68__get_cpu_capabilities: 69 ldr x0, Lcommpage_cc_addr 70 ldr x0, [x0] 71 ret 72Lcommpage_cc_addr: 73.quad _COMM_PAGE_CPU_CAPABILITIES64 74 75#else 76#error Unsupported architecture 77#endif 78