opcodes/nds32-asm.h

   1 /* NDS32-specific support for 32-bit ELF.
   2    Copyright (C) 2012-2013 Free Software Foundation, Inc.
   3    Contributed by Andes Technology Corporation.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.*/
  21
  22
  23 #ifndef NDS32_ASM_H
  24 #define NDS32_ASM_H
  25
  26 /* Constant values for assembler.  */
  27 enum
  28 {
  29   /* Error code for assembling an instruction.  */
  30   NASM_OK = 0,
  31   NASM_ERR_UNKNOWN_OP,
  32   NASM_ERR_SYNTAX,
  33   NASM_ERR_OPERAND,
  34   NASM_ERR_OUT_OF_RANGE,
  35   NASM_ERR_REG_REDUCED,
  36   NASM_ERR_JUNK_EOL,
  37
  38   /* Results of parse_operand.  */
  39   NASM_R_CONST,
  40   NASM_R_SYMBOL,
  41   NASM_R_ILLEGAL,
  42
  43   /* Flags for open description.  */
  44   NASM_OPEN_ARCH_V1             = 0x0,
  45   NASM_OPEN_ARCH_V2             = 0x1,
  46   NASM_OPEN_ARCH_V3             = 0x2,
  47   NASM_OPEN_ARCH_V3M            = 0x3,
  48   NASM_OPEN_ARCH_MASK           = 0xf,
  49   NASM_OPEN_REDUCED_REG         = 0x10,
  50
  51   /* Common attributes.  */
  52   NASM_ATTR_ISA_V1              = 0x01,
  53   NASM_ATTR_ISA_V2              = 0x02,
  54   NASM_ATTR_ISA_V3              = 0x04,
  55   NASM_ATTR_ISA_V3M             = 0x08,
  56   NASM_ATTR_ISA_ALL             = 0x0f,
  57
  58   /* Attributes for instructions.  */
  59   NASM_ATTR_MAC                 = 0x0000100,
  60   NASM_ATTR_DIV                 = 0x0000200,
  61   NASM_ATTR_FPU                 = 0x0000400,
  62   NASM_ATTR_FPU_SP_EXT          = 0x0000800,
  63   NASM_ATTR_FPU_DP_EXT          = 0x0001000,
  64   NASM_ATTR_STR_EXT             = 0x0002000,
  65   NASM_ATTR_PERF_EXT            = 0x0004000,
  66   NASM_ATTR_PERF2_EXT           = 0x0008000,
  67   NASM_ATTR_AUDIO_ISAEXT        = 0x0010000,
  68   NASM_ATTR_IFC_EXT             = 0x0020000,
  69   NASM_ATTR_EX9_EXT             = 0x0040000,
  70   NASM_ATTR_FPU_FMA             = 0x0080000,
  71   NASM_ATTR_DXREG               = 0x0100000,
  72   NASM_ATTR_BRANCH              = 0x0200000,
  73   NASM_ATTR_RELAXABLE           = 0x0400000,
  74   NASM_ATTR_PCREL               = 0x0800000,
  75   NASM_ATTR_GPREL               = 0x1000000,
  76
  77   /* Attributes for relocations.  */
  78   NASM_ATTR_HI20                = 0x10000000,
  79   NASM_ATTR_LO12                = 0x20000000,
  80   NASM_ATTR_LO20                = 0x40000000,
  81
  82   /* Attributes for registers.  */
  83   NASM_ATTR_RDREG               = 0x000100
  84 };
  85
  86 /* Macro for instruction attribute.  */
  87 #define ATTR(attr)              NASM_ATTR_ ## attr
  88 #define ATTR_NONE               0
  89 #define ATTR_PCREL              (ATTR (PCREL) | ATTR (BRANCH))
  90
  91 #define ATTR_ALL                (ATTR (ISA_ALL))
  92 #define ATTR_V2UP               (ATTR_ALL & ~(ATTR (ISA_V1)))
  93 #define ATTR_V3MUP              (ATTR (ISA_V3) | ATTR (ISA_V3M))
  94 #define ATTR_V3                 (ATTR (ISA_V3))
  95 #define ATTR_V3MEX_V1           (ATTR_ALL & ~(ATTR (ISA_V3M)))
  96 #define ATTR_V3MEX_V2           (ATTR_V2UP & ~(ATTR (ISA_V3M)))
  97
  98 /* Lexical element in parsed syntax.  */
  99 typedef int lex_t;
 100
 101 /* Common header for hash entries.  */
 102 struct nds32_hash_entry
 103 {
 104   const char *name;
 105 };
 106
 107 typedef struct nds32_keyword
 108 {
 109   const char *name;
 110   int value;
 111   uint64_t attr;
 112 } keyword_t;
 113
 114 typedef struct nds32_opcode
 115 {
 116   /* Opcode for the instruction.  */
 117   const char *opcode;
 118   /* Human readable string of this instruction.  */
 119   const char *instruction;
 120   /* Base value of this instruction.  */
 121   uint32_t value;
 122   /* The byte-size of the instruction.  */
 123   int isize;
 124   /* Attributes of this instruction.  */
 125   uint64_t attr;
 126   /* Implicit define/use.  */
 127   uint64_t defuse;
 128   /* Parsed string for assembling.  */
 129   lex_t *syntax;
 130   /* Number of variant.  */
 131   int variant;
 132   /* Next form of the same mnemonic.  */
 133   struct nds32_opcode *next;
 134   /* TODO: Extra constrains and verification.
 135            For example, `mov55 $sp, $sp' is not allowed in v3.  */
 136 } opcode_t;
 137
 138 typedef struct nds32_asm_insn
 139 {
 140   /* Assembled instruction bytes.  */
 141   uint32_t insn;
 142   /* The opcode structure for this instruction.  */
 143   struct nds32_opcode *opcode;
 144   /* The field need special fix-up, used for relocation.  */
 145   const struct nds32_field *field;
 146   /* Attributes for relocation.  */
 147   uint64_t attr;
 148   /* Application-dependent data, e.g., expression.  */
 149   void *info;
 150   /* Input/output registers.  */
 151   uint64_t defuse;
 152 } nds32_asm_insn_t;
 153
 154 typedef struct nds32_asm_desc
 155 {
 156   /* The callback provided by assembler user for parse an operand,
 157      e.g., parse integer.  */
 158   int (*parse_operand) (struct nds32_asm_desc *,
 159                         struct nds32_asm_insn *,
 160                         char **, int64_t *);
 161
 162   /* Result of assembling.  */
 163   int result;
 164
 165   /* The mach for this assembling.  */
 166   int mach;
 167
 168   int flags;
 169 } nds32_asm_desc_t;
 170
 171 /* The field information for an operand.  */
 172 typedef struct nds32_field
 173 {
 174   /* Name of the field.  */
 175   const char *name;
 176
 177   int bitpos;
 178   int bitsize;
 179   int shift;
 180   int hw_res;
 181
 182   int (*parse) (struct nds32_asm_desc *,
 183                 struct nds32_asm_insn *,
 184                 char **, int64_t *);
 185 } field_t;
 186
 187 extern void nds32_assemble (nds32_asm_desc_t *, nds32_asm_insn_t *, char *);
 188 extern void nds32_asm_init (nds32_asm_desc_t *, int);
 189
 190 #endif