109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/*
|
|
* 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]
|
|
|