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 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)
53 #define RISCV_INT		__ASM_STR(.word)
54 #define RISCV_SZINT		__ASM_STR(4)
55 #define RISCV_LGINT		__ASM_STR(2)
56 #else
57 #error "Unexpected __SIZEOF_INT__"
58 #endif
59 
60 #if (__SIZEOF_SHORT__ == 2)
61 #define RISCV_SHORT		__ASM_STR(.half)
62 #define RISCV_SZSHORT		__ASM_STR(2)
63 #define RISCV_LGSHORT		__ASM_STR(1)
64 #else
65 #error "Unexpected __SIZEOF_SHORT__"
66 #endif
67 
68 #endif /* _ASM_RISCV_ASM_H */
69