compiler.h

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/*
 * SPDX-License-Identifier: GPL-3.0-only
 * This file is part of Lazuli.
 */
 
#ifndef LAZULI_SYS_COMPILER_H
#define LAZULI_SYS_COMPILER_H
 
#ifdef __GNUC__
 
/*
 * The following macro functions definitions are an ugly hack to solve an ugly
 * compiler error: "section type conflict".
 *
 * TODO: Try a better way to solve this problem.
 */
#define COMPILER_H_STRINGIFY(X) #X
 
#define COMPILER_H_TOSTRING(X) COMPILER_H_STRINGIFY(X)
 
#define COMPILER_H_GENERATE_PROGMEM_SECTION_NAME() .progmem.__LINE__
 
#define NORETURN __attribute__((noreturn))
 
/*
 * We force the declaration of different ".progmem" sections by using all these
 * macro functions to eliminate the "section type conflict" error generated by
 * the compiler.
 * When linking, all these sections will be grouped into a unique ".progmem"
 * section.
 */
#define PROGMEM                                                         \
  __attribute__                                                         \
  ((section(COMPILER_H_TOSTRING(COMPILER_H_GENERATE_PROGMEM_SECTION_NAME()))))
 
#define NOINIT __attribute__((section(".noinit")))
 
#else /* __GNUC__ */
 
#define NORETURN
#define PROGMEM
#define NOINIT
 
#endif/* __GNUC__ */
 
#endif /* LAZULI_SYS_COMPILER_H */