1 /* SPDX-License-Identifier: Apache-2.0 */ 2 /* 3 * Copyright (C) 2021 Synopsys, Inc. (www.synopsys.com) 4 * 5 * Author: Vineet Gupta <vgupta@synopsys.com> 6 * 7 * Top level include file providing ISA pseudo-mnemonics for use in assembler 8 * and inline assembly. 9 * 10 * - Helps code reuse across ARC64/ARC32/ARCv2 11 * e.g. "LDR" maps to 'LD' on 32-bit ISA, 'LDL' on 64-bit ARCv2/ARC64 12 * 13 * - Provides emulation with multiple instructions if the case be 14 * e.g. "DBNZ" implemented using 'SUB' and 'BRNE' 15 * 16 * - Looks more complex than it really is: mainly because Kconfig defines 17 * are not "honored" in inline assembly. So each variant is unconditional 18 * code in a standalone file with Kconfig based #ifdef'ry here. During the 19 * build process, the "C" preprocessor runs through this file, leaving 20 * just the final variant include in code fed to compiler/assembler. 21 */ 22 23 #ifndef __ASM_ARC_ASM_H 24 #define __ASM_ARC_ASM_H 1 25 26 #ifdef _ASMLANGUAGE 27 28 #if defined(CONFIG_ISA_ARCV3) && defined(CONFIG_64BIT) 29 #define ARC_PTR .xword 30 #define ARC_REGSZ 8 31 #define ARC_REGSHIFT 3 32 33 #if defined(__CCAC__) 34 #include "asm-macro-64-bit-mwdt.h" 35 #else 36 #include "asm-macro-64-bit-gnu.h" 37 #endif /* defined(__CCAC__) */ 38 39 #elif defined(CONFIG_ISA_ARCV3) && !defined(CONFIG_64BIT) 40 #define ARC_PTR .word 41 #define ARC_REGSZ 4 42 #define ARC_REGSHIFT 2 43 44 #if defined(__CCAC__) 45 #include "asm-macro-32-bit-mwdt.h" 46 #else 47 #include "asm-macro-32-bit-gnu.h" 48 #endif /* defined(__CCAC__) */ 49 50 #else 51 #define ARC_PTR .word 52 #define ARC_REGSZ 4 53 #define ARC_REGSHIFT 2 54 55 #if defined(__CCAC__) 56 #include "asm-macro-32-bit-mwdt.h" 57 #else 58 #include "asm-macro-32-bit-gnu.h" 59 #endif /* defined(__CCAC__) */ 60 61 #endif 62 63 #else /* !_ASMLANGUAGE */ 64 65 #error "asm-compat macroses used not in assembler code!" 66 67 #endif /* _ASMLANGUAGE */ 68 69 #endif 70
