Line data    Source code

       1            0 : /* 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