arch/riscv/include/asm/asm.h

/*
 * Copyright (C) 2015 Regents of the University of California
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 */

#ifndef _ASM_RISCV_ASM_H
#define _ASM_RISCV_ASM_H

#ifdef __ASSEMBLY__
#define __ASM_STR(x)	x
#else
#define __ASM_STR(x)	#x
#endif

#if __riscv_xlen == 64
#define __REG_SEL(a, b)	__ASM_STR(a)
#elif __riscv_xlen == 32
#define __REG_SEL(a, b)	__ASM_STR(b)
#else
#error "Unexpected __riscv_xlen"
#endif

#define REG_L		__REG_SEL(ld, lw)
#define REG_S		__REG_SEL(sd, sw)
#define SZREG		__REG_SEL(8, 4)
#define LGREG		__REG_SEL(3, 2)

#if __SIZEOF_POINTER__ == 8
#ifdef __ASSEMBLY__
#define RISCV_PTR		.dword
#define RISCV_SZPTR		8
#define RISCV_LGPTR		3
#else
#define RISCV_PTR		".dword"
#define RISCV_SZPTR		"8"
#define RISCV_LGPTR		"3"
#endif
#elif __SIZEOF_POINTER__ == 4
#ifdef __ASSEMBLY__
#define RISCV_PTR		.word
#define RISCV_SZPTR		4
#define RISCV_LGPTR		2
#else
#define RISCV_PTR		".word"
#define RISCV_SZPTR		"4"
#define RISCV_LGPTR		"2"
#endif
#else
#error "Unexpected __SIZEOF_POINTER__"
#endif

#if (__SIZEOF_INT__ == 4)
#define RISCV_INT		__ASM_STR(.word)
#define RISCV_SZINT		__ASM_STR(4)
#define RISCV_LGINT		__ASM_STR(2)
#else
#error "Unexpected __SIZEOF_INT__"
#endif

#if (__SIZEOF_SHORT__ == 2)
#define RISCV_SHORT		__ASM_STR(.half)
#define RISCV_SZSHORT		__ASM_STR(2)
#define RISCV_LGSHORT		__ASM_STR(1)
#else
#error "Unexpected __SIZEOF_SHORT__"
#endif

#endif /* _ASM_RISCV_ASM_H */