Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2015 Regents of the University of California
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14#ifndef _ASM_RISCV_ASM_H
15#define _ASM_RISCV_ASM_H
16
17#ifdef __ASSEMBLY__
18#define __ASM_STR(x) x
19#else
20#define __ASM_STR(x) #x
21#endif
22
23#if __riscv_xlen == 64
24#define __REG_SEL(a, b) __ASM_STR(a)
25#elif __riscv_xlen == 32
26#define __REG_SEL(a, b) __ASM_STR(b)
27#else
28#error "Unexpected __riscv_xlen"
29#endif
30
31#define REG_L __REG_SEL(ld, lw)
32#define REG_S __REG_SEL(sd, sw)
33#define SZREG __REG_SEL(8, 4)
34#define LGREG __REG_SEL(3, 2)
35
36#if __SIZEOF_POINTER__ == 8
37#ifdef __ASSEMBLY__
38#define RISCV_PTR .dword
39#define RISCV_SZPTR 8
40#define RISCV_LGPTR 3
41#else
42#define RISCV_PTR ".dword"
43#define RISCV_SZPTR "8"
44#define RISCV_LGPTR "3"
45#endif
46#elif __SIZEOF_POINTER__ == 4
47#ifdef __ASSEMBLY__
48#define RISCV_PTR .word
49#define RISCV_SZPTR 4
50#define RISCV_LGPTR 2
51#else
52#define RISCV_PTR ".word"
53#define RISCV_SZPTR "4"
54#define RISCV_LGPTR "2"
55#endif
56#else
57#error "Unexpected __SIZEOF_POINTER__"
58#endif
59
60#if (__SIZEOF_INT__ == 4)
61#define RISCV_INT __ASM_STR(.word)
62#define RISCV_SZINT __ASM_STR(4)
63#define RISCV_LGINT __ASM_STR(2)
64#else
65#error "Unexpected __SIZEOF_INT__"
66#endif
67
68#if (__SIZEOF_SHORT__ == 2)
69#define RISCV_SHORT __ASM_STR(.half)
70#define RISCV_SZSHORT __ASM_STR(2)
71#define RISCV_LGSHORT __ASM_STR(1)
72#else
73#error "Unexpected __SIZEOF_SHORT__"
74#endif
75
76#endif /* _ASM_RISCV_ASM_H */