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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __CROS_EC_COMMON_ASM_DEFINE_H
#define __CROS_EC_COMMON_ASM_DEFINE_H
#include "stddef.h"
/*
* Use an immediate integer constraint
* (https://gcc.gnu.org/onlinedocs/gcc/Simple-Constraints.html) to write the
* value. This file is compiled with the "-S" flag, which stops the compiler
* after generating assembly. The resulting assembly is then grepped for the
* "__ASM_DEFINE__" strings, which is used to create a header file with the
* value.
*/
#define ASM_DEFINE(NAME, VAL) \
__asm__ volatile(".ascii \" __ASM_DEFINE__ " NAME " %0\"" : : "i"(VAL))
#define ASM_DEFINE_OFFSET(NAME, TYPE, MEMBER) \
ASM_DEFINE(NAME, offsetof(TYPE, MEMBER))
#endif /* __CROS_EC_COMMON_ASM_DEFINE_H */
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