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 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 */