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[mirror_ubuntu-jammy-kernel.git] / arch / riscv / include / asm / asm.h
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50acfb2b 1/* SPDX-License-Identifier: GPL-2.0-only */
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2/*
3 * Copyright (C) 2015 Regents of the University of California
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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 SZREG __REG_SEL(8, 4)
26#define LGREG __REG_SEL(3, 2)
27
28#if __SIZEOF_POINTER__ == 8
29#ifdef __ASSEMBLY__
30#define RISCV_PTR .dword
31#define RISCV_SZPTR 8
32#define RISCV_LGPTR 3
33#else
34#define RISCV_PTR ".dword"
35#define RISCV_SZPTR "8"
36#define RISCV_LGPTR "3"
37#endif
38#elif __SIZEOF_POINTER__ == 4
39#ifdef __ASSEMBLY__
40#define RISCV_PTR .word
41#define RISCV_SZPTR 4
42#define RISCV_LGPTR 2
43#else
44#define RISCV_PTR ".word"
45#define RISCV_SZPTR "4"
46#define RISCV_LGPTR "2"
47#endif
48#else
49#error "Unexpected __SIZEOF_POINTER__"
50#endif
51
52#if (__SIZEOF_INT__ == 4)
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53#define RISCV_INT __ASM_STR(.word)
54#define RISCV_SZINT __ASM_STR(4)
55#define RISCV_LGINT __ASM_STR(2)
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56#else
57#error "Unexpected __SIZEOF_INT__"
58#endif
59
60#if (__SIZEOF_SHORT__ == 2)
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61#define RISCV_SHORT __ASM_STR(.half)
62#define RISCV_SZSHORT __ASM_STR(2)
63#define RISCV_LGSHORT __ASM_STR(1)
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64#else
65#error "Unexpected __SIZEOF_SHORT__"
66#endif
67
68#endif /* _ASM_RISCV_ASM_H */