LXR linux/arch/riscv/include/asm/asm.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2015 Regents of the University of California
   4 */
   5
   6#ifndef _ASM_RISCV_ASM_H
   7#define _ASM_RISCV_ASM_H
   8
   9#ifdef __ASSEMBLY__
  10#define __ASM_STR(x)    x
  11#else
  12#define __ASM_STR(x)    #x
  13#endif
  14
  15#if __riscv_xlen == 64
  16#define __REG_SEL(a, b) __ASM_STR(a)
  17#elif __riscv_xlen == 32
  18#define __REG_SEL(a, b) __ASM_STR(b)
  19#else
  20#error "Unexpected __riscv_xlen"
  21#endif
  22
  23#define REG_L           __REG_SEL(ld, lw)
  24#define REG_S           __REG_SEL(sd, sw)
  25#define REG_SC          __REG_SEL(sc.d, sc.w)
  26#define SZREG           __REG_SEL(8, 4)
  27#define LGREG           __REG_SEL(3, 2)
  28
  29#if __SIZEOF_POINTER__ == 8
  30#ifdef __ASSEMBLY__
  31#define RISCV_PTR               .dword
  32#define RISCV_SZPTR             8
  33#define RISCV_LGPTR             3
  34#else
  35#define RISCV_PTR               ".dword"
  36#define RISCV_SZPTR             "8"
  37#define RISCV_LGPTR             "3"
  38#endif
  39#elif __SIZEOF_POINTER__ == 4
  40#ifdef __ASSEMBLY__
  41#define RISCV_PTR               .word
  42#define RISCV_SZPTR             4
  43#define RISCV_LGPTR             2
  44#else
  45#define RISCV_PTR               ".word"
  46#define RISCV_SZPTR             "4"
  47#define RISCV_LGPTR             "2"
  48#endif
  49#else
  50#error "Unexpected __SIZEOF_POINTER__"
  51#endif
  52
  53#if (__SIZEOF_INT__ == 4)
  54#define RISCV_INT               __ASM_STR(.word)
  55#define RISCV_SZINT             __ASM_STR(4)
  56#define RISCV_LGINT             __ASM_STR(2)
  57#else
  58#error "Unexpected __SIZEOF_INT__"
  59#endif
  60
  61#if (__SIZEOF_SHORT__ == 2)
  62#define RISCV_SHORT             __ASM_STR(.half)
  63#define RISCV_SZSHORT           __ASM_STR(2)
  64#define RISCV_LGSHORT           __ASM_STR(1)
  65#else
  66#error "Unexpected __SIZEOF_SHORT__"
  67#endif
  68
  69#endif /* _ASM_RISCV_ASM_H */
  70