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https://github.com/zephyrproject-rtos/zephyr
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77ba3c3b8b
Do not depend on environment variables and use a kconfig variable for defining the architecture. In addition, remove the X86_32 variable, it just duplicates X86 for not good reason, at least until start supporting MCUs with 64bit. Change-Id: Ia001db81ed007e6a43f34506fed9be1345b88a4b Signed-off-by: Anas Nashif <anas.nashif@intel.com>
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/* toolchain/common.h - common toolchain abstraction */
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/*
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* Copyright (c) 2010-2014 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* DESCRIPTION
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* Macros to abstract compiler capabilities (common to all toolchains).
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*/
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/*
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* Generate a reference to an external symbol.
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* The reference indicates to the linker that the symbol is required
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* by the module containing the reference and should be included
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* in the image if the module is in the image.
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*
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* The assembler directive ".set" is used to define a local symbol.
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* No memory is allocated, and the local symbol does not appear in
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* the symbol table.
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*/
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#ifdef _ASMLANGUAGE
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#define REQUIRES(sym) .set sym ## _Requires, sym
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#else
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#define REQUIRES(sym) __asm__ (".set " # sym "_Requires, " # sym "\n\t");
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#endif
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#ifdef _ASMLANGUAGE
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#define SECTION .section
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#endif
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/*
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* The following definitions are used for symbol name compatibility.
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*
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* When #if 1, sources are assembled assuming the compiler
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* you are using does not generate global symbols prefixed by "_".
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* (e.g. elf/dwarf)
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*
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* When #if 0, sources are assembled assuming the compiler
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* you are using generates global symbols prefixed by "_".
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* (e.g. coff/stabs)
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*/
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#ifdef _ASMLANGUAGE
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#ifndef TOOL_PREPENDS_UNDERSCORE
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#define FUNC(sym) sym
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#else
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#define FUNC(sym) _##sym
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#endif
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#endif
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/*
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* If the project is being built for speed (i.e. not for minimum size) then
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* align functions and branches in executable sections to improve performance.
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*/
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#ifdef _ASMLANGUAGE
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#ifdef CONFIG_X86
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#ifdef PERF_OPT
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#define PERFOPT_ALIGN .balign 16
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#else
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#define PERFOPT_ALIGN .balign 1
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#endif
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#elif defined(CONFIG_ARM)
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#ifdef CONFIG_ISA_THUMB
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#define PERFOPT_ALIGN .balign 2
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#else
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#define PERFOPT_ALIGN .balign 4
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#endif
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#elif defined(CONFIG_ARC)
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#define PERFOPT_ALIGN .balign 4
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#endif
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#define GC_SECTION(sym) SECTION .text.FUNC(sym), "ax"
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#define BRANCH_LABEL(sym) FUNC(sym) :
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#define VAR(sym) FUNC(sym)
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#endif /* _ASMLANGUAGE */
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/* force inlining a function */
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#if !defined(_ASMLANGUAGE)
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#define ALWAYS_INLINE inline __attribute__((always_inline))
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#endif
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#define _STRINGIFY(x) #x
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/* Indicate that an array will be used for stack space. */
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#define __stack __aligned(STACK_ALIGN)
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