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/*
* Copyright (c) 2010-2014 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Common toolchain abstraction
*
* Macros to abstract compiler capabilities (common to all toolchains).
*/
/* Abstract use of extern keyword for compatibility between C and C++ */
#ifdef __cplusplus
#define EXTERN_C extern "C"
#else
#define EXTERN_C extern
#endif
/* Use TASK_ENTRY_CPP to tag task entry points defined in C++ files. */
#ifdef __cplusplus
#define TASK_ENTRY_CPP extern "C"
#endif
/*
* Generate a reference to an external symbol.
* The reference indicates to the linker that the symbol is required
* by the module containing the reference and should be included
* in the image if the module is in the image.
*
* The assembler directive ".set" is used to define a local symbol.
* No memory is allocated, and the local symbol does not appear in
* the symbol table.
*/
#ifdef _ASMLANGUAGE
#define REQUIRES(sym) .set sym ## _Requires, sym
#else
#define REQUIRES(sym) __asm__ (".set " # sym "_Requires, " # sym "\n\t");
#endif
#ifdef _ASMLANGUAGE
#define SECTION .section
#endif
/*
* If the project is being built for speed (i.e. not for minimum size) then
* align functions and branches in executable sections to improve performance.
*/
#ifdef _ASMLANGUAGE
#ifdef CONFIG_X86
#ifdef PERF_OPT
#define PERFOPT_ALIGN .balign 16
#else
#define PERFOPT_ALIGN .balign 1
#endif
#elif defined(CONFIG_ARM)
#ifdef CONFIG_ISA_THUMB
#define PERFOPT_ALIGN .balign 2
#else
#define PERFOPT_ALIGN .balign 4
#endif
#elif defined(CONFIG_ARC)
#define PERFOPT_ALIGN .balign 4
#elif defined(CONFIG_NIOS2) || defined(CONFIG_RISCV32) || \
defined(CONFIG_XTENSA)
#define PERFOPT_ALIGN .balign 4
#else
#error Architecture unsupported
#endif
#define GC_SECTION(sym) SECTION .text.##sym, "ax"
#endif /* _ASMLANGUAGE */
/* force inlining a function */
#if !defined(_ASMLANGUAGE)
#define ALWAYS_INLINE inline __attribute__((always_inline))
#endif
#define _STRINGIFY(x) #x
#define STRINGIFY(s) _STRINGIFY(s)
/* Indicate that an array will be used for stack space. */
#define __stack __aligned(STACK_ALIGN)
/* concatenate the values of the arguments into one */
#define _DO_CONCAT(x, y) x ## y
#define _CONCAT(x, y) _DO_CONCAT(x, y)
/* compile-time assertion that makes the build fail */
#define BUILD_ASSERT(EXPR) typedef char __build_assert_failure[(EXPR) ? 1 : -1]
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