Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 REG_ASM __REG_SEL(.dword, .word)
27#define SZREG __REG_SEL(8, 4)
28#define LGREG __REG_SEL(3, 2)
29
30#if __SIZEOF_POINTER__ == 8
31#ifdef __ASSEMBLY__
32#define RISCV_PTR .dword
33#define RISCV_SZPTR 8
34#define RISCV_LGPTR 3
35#else
36#define RISCV_PTR ".dword"
37#define RISCV_SZPTR "8"
38#define RISCV_LGPTR "3"
39#endif
40#elif __SIZEOF_POINTER__ == 4
41#ifdef __ASSEMBLY__
42#define RISCV_PTR .word
43#define RISCV_SZPTR 4
44#define RISCV_LGPTR 2
45#else
46#define RISCV_PTR ".word"
47#define RISCV_SZPTR "4"
48#define RISCV_LGPTR "2"
49#endif
50#else
51#error "Unexpected __SIZEOF_POINTER__"
52#endif
53
54#if (__SIZEOF_INT__ == 4)
55#define RISCV_INT __ASM_STR(.word)
56#define RISCV_SZINT __ASM_STR(4)
57#define RISCV_LGINT __ASM_STR(2)
58#else
59#error "Unexpected __SIZEOF_INT__"
60#endif
61
62#if (__SIZEOF_SHORT__ == 2)
63#define RISCV_SHORT __ASM_STR(.half)
64#define RISCV_SZSHORT __ASM_STR(2)
65#define RISCV_LGSHORT __ASM_STR(1)
66#else
67#error "Unexpected __SIZEOF_SHORT__"
68#endif
69
70#ifdef __ASSEMBLY__
71
72/* Common assembly source macros */
73
74/*
75 * NOP sequence
76 */
77.macro nops, num
78 .rept \num
79 nop
80 .endr
81.endm
82
83#endif /* __ASSEMBLY__ */
84
85#endif /* _ASM_RISCV_ASM_H */