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