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 */ 87