xref: /xnu-8020.121.3/libsyscall/wrappers/__get_cpu_capabilities.s (revision fdd8201d7b966f0c3ea610489d29bd841d358941)
1*fdd8201dSApple OSS Distributions/*
2*fdd8201dSApple OSS Distributions * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
3*fdd8201dSApple OSS Distributions *
4*fdd8201dSApple OSS Distributions * @APPLE_LICENSE_HEADER_START@
5*fdd8201dSApple OSS Distributions *
6*fdd8201dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*fdd8201dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*fdd8201dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*fdd8201dSApple OSS Distributions * compliance with the License. Please obtain a copy of the License at
10*fdd8201dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this
11*fdd8201dSApple OSS Distributions * file.
12*fdd8201dSApple OSS Distributions *
13*fdd8201dSApple OSS Distributions * The Original Code and all software distributed under the License are
14*fdd8201dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*fdd8201dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*fdd8201dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*fdd8201dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*fdd8201dSApple OSS Distributions * Please see the License for the specific language governing rights and
19*fdd8201dSApple OSS Distributions * limitations under the License.
20*fdd8201dSApple OSS Distributions *
21*fdd8201dSApple OSS Distributions * @APPLE_LICENSE_HEADER_END@
22*fdd8201dSApple OSS Distributions */
23*fdd8201dSApple OSS Distributions
24*fdd8201dSApple OSS Distributions/* Get the cpu_capabilities bit vector out of the comm page */
25*fdd8201dSApple OSS Distributions
26*fdd8201dSApple OSS Distributions#define	__APPLE_API_PRIVATE
27*fdd8201dSApple OSS Distributions#include <machine/cpu_capabilities.h>
28*fdd8201dSApple OSS Distributions#undef	__APPLE_API_PRIVATE
29*fdd8201dSApple OSS Distributions
30*fdd8201dSApple OSS Distributions#if defined(__x86_64__)
31*fdd8201dSApple OSS Distributions
32*fdd8201dSApple OSS Distributions	.text
33*fdd8201dSApple OSS Distributions	.align 2, 0x90
34*fdd8201dSApple OSS Distributions	.globl __get_cpu_capabilities
35*fdd8201dSApple OSS Distributions__get_cpu_capabilities:
36*fdd8201dSApple OSS Distributions	movq	$(_COMM_PAGE_CPU_CAPABILITIES64), %rax
37*fdd8201dSApple OSS Distributions	movq	(%rax), %rax
38*fdd8201dSApple OSS Distributions	ret
39*fdd8201dSApple OSS Distributions
40*fdd8201dSApple OSS Distributions#elif defined(__i386__)
41*fdd8201dSApple OSS Distributions
42*fdd8201dSApple OSS Distributions	.text
43*fdd8201dSApple OSS Distributions	.align 2, 0x90
44*fdd8201dSApple OSS Distributions	.globl __get_cpu_capabilities
45*fdd8201dSApple OSS Distributions__get_cpu_capabilities:
46*fdd8201dSApple OSS Distributions	movl	_COMM_PAGE_CPU_CAPABILITIES64, %eax
47*fdd8201dSApple OSS Distributions	movl	_COMM_PAGE_CPU_CAPABILITIES64+4, %edx
48*fdd8201dSApple OSS Distributions	ret
49*fdd8201dSApple OSS Distributions
50*fdd8201dSApple OSS Distributions#elif defined(__arm__)
51*fdd8201dSApple OSS Distributions
52*fdd8201dSApple OSS Distributions	.text
53*fdd8201dSApple OSS Distributions	.align 2
54*fdd8201dSApple OSS Distributions	.globl __get_cpu_capabilities
55*fdd8201dSApple OSS Distributions__get_cpu_capabilities:
56*fdd8201dSApple OSS Distributions	mov	r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x000000ff)
57*fdd8201dSApple OSS Distributions	orr	r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x0000ff00)
58*fdd8201dSApple OSS Distributions	orr	r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0x00ff0000)
59*fdd8201dSApple OSS Distributions	orr	r0, r0, #(_COMM_PAGE_CPU_CAPABILITIES & 0xff000000)
60*fdd8201dSApple OSS Distributions	ldr	r0, [r0]
61*fdd8201dSApple OSS Distributions	bx	lr
62*fdd8201dSApple OSS Distributions
63*fdd8201dSApple OSS Distributions#elif defined(__arm64__)
64*fdd8201dSApple OSS Distributions
65*fdd8201dSApple OSS Distributions	.text
66*fdd8201dSApple OSS Distributions	.align 2
67*fdd8201dSApple OSS Distributions	.globl __get_cpu_capabilities
68*fdd8201dSApple OSS Distributions__get_cpu_capabilities:
69*fdd8201dSApple OSS Distributions	ldr x0, Lcommpage_cc_addr
70*fdd8201dSApple OSS Distributions	ldr	x0, [x0]
71*fdd8201dSApple OSS Distributions	ret
72*fdd8201dSApple OSS DistributionsLcommpage_cc_addr:
73*fdd8201dSApple OSS Distributions.quad _COMM_PAGE_CPU_CAPABILITIES64
74*fdd8201dSApple OSS Distributions
75*fdd8201dSApple OSS Distributions#else
76*fdd8201dSApple OSS Distributions#error Unsupported architecture
77*fdd8201dSApple OSS Distributions#endif
78