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