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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | /* * 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. */ #if !defined(_ASMLANGUAGE) #define __stack __aligned(STACK_ALIGN) #endif /* concatenate the values of the arguments into one */ #define _DO_CONCAT(x, y) x ## y #define _CONCAT(x, y) _DO_CONCAT(x, y) #ifndef BUILD_ASSERT /* compile-time assertion that makes the build fail */ #define BUILD_ASSERT(EXPR) typedef char __build_assert_failure[(EXPR) ? 1 : -1] #endif #ifndef BUILD_ASSERT_MSG /* build assertion with message -- common implementation swallows message. */ #define BUILD_ASSERT_MSG(EXPR, MSG) BUILD_ASSERT(EXPR) #endif |