xref: /freebsd/sys/arm/include/asmacros.h (revision eda14cbc264d6969b02f2b1994cef11148e914f1)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2012 Olivier Houchard <cognet@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef	_MACHINE_ASMACROS_H_
32 #define	_MACHINE_ASMACROS_H_
33 
34 #include <machine/asm.h>
35 
36 #ifdef _KERNEL
37 
38 #ifdef LOCORE
39 
40 #if __ARM_ARCH >= 6
41 #define GET_CURTHREAD_PTR(tmp) \
42     	mrc	p15, 0, tmp, c13, c0, 4
43 #else
44 #define GET_CURTHREAD_PTR(tmp)	\
45 	ldr	tmp, =_C_LABEL(__pcpu);\
46 	ldr	tmp, [tmp, #PC_CURTHREAD]
47 #endif
48 
49 #define	ELFNOTE(section, type, vendor, desctype, descdata...)	  \
50 	.pushsection section					; \
51 	    .balign 4						; \
52 	    .long 2f - 1f		/* namesz */		; \
53 	    .long 4f - 3f		/* descsz */		; \
54 	    .long type			/* type */		; \
55 	    1: .asciz vendor		/* vendor name */	; \
56 	    2: .balign 4					; \
57 	    3:  desctype descdata	/* node */		; \
58 	    4: .balign 4					; \
59 	.popsection
60 
61 #endif /* LOCORE */
62 
63 #endif /* _KERNEL */
64 
65 #endif /* !_MACHINE_ASMACROS_H_ */
66