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 provding ISA pseudo-mnemonics for use in assemmler 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 varaint 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 #include "asm-macro-64-bit-gnu.h" 33 #else 34 #define ARC_PTR .word 35 #define ARC_REGSZ 4 36 #define ARC_REGSHIFT 2 37 38 #if defined(__CCAC__) 39 #include "asm-macro-32-bit-mwdt.h" 40 #else 41 #include "asm-macro-32-bit-gnu.h" 42 #endif /* defined(__CCAC__) */ 43 44 #endif 45 46 #else /* !_ASMLANGUAGE */ 47 48 #error "asm-compat macroses used not in assembler code!" 49 50 #endif /* _ASMLANGUAGE */ 51 52 #endif 53
