source: trunk/libs/newlib/src/libgloss/arm/arm.h @ 670

Last change on this file since 670 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 2.6 KB
Line 
1/*
2 * Copyright (c) 2011 ARM Ltd
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the company may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _LIBGLOSS_ARM_H
30#define _LIBGLOSS_ARM_H
31
32#include "acle-compat.h"
33
34/* Checking for targets supporting only Thumb instructions (eg. ARMv6-M) or
35   supporting Thumb-2 instructions, whether ARM instructions are available or
36   not, is done many times in libgloss/arm.  So factor it out and use
37   PREFER_THUMB instead.  */
38#if __thumb2__ || (__thumb__ && !__ARM_ARCH_ISA_ARM)
39# define PREFER_THUMB
40#endif
41
42/* Processor only capable of executing Thumb-1 instructions.  */
43#if __ARM_ARCH_ISA_THUMB == 1 && !__ARM_ARCH_ISA_ARM
44# define THUMB1_ONLY
45#endif
46
47/* M profile architectures.  This is a different set of architectures than
48   those not having ARM ISA because it does not contain ARMv7.  This macro is
49   necessary to test which architectures use bkpt as semihosting interface from
50   architectures using svc.  */
51#if !__ARM_ARCH_ISA_ARM && !__ARM_ARCH_7__
52# define THUMB_VXM
53#endif
54
55/* Defined if this target supports the BLX Rm instruction.  */
56#if  !defined(__ARM_ARCH_2__)   \
57  && !defined(__ARM_ARCH_3__)   \
58  && !defined(__ARM_ARCH_3M__)  \
59  && !defined(__ARM_ARCH_4__)   \
60  && !defined(__ARM_ARCH_4T__)
61# define HAVE_CALL_INDIRECT
62#endif
63
64#endif /* _LIBGLOSS_ARM_H */
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