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/* NDS32-specific support for 32-bit ELF.
Copyright (C) 2012-2013 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA.*/
#ifndef NDS32_ASM_H
#define NDS32_ASM_H
/* Constant values for assembler. */
enum
{
/* Error code for assembling an instruction. */
NASM_OK = 0,
NASM_ERR_UNKNOWN_OP,
NASM_ERR_SYNTAX,
NASM_ERR_OPERAND,
NASM_ERR_OUT_OF_RANGE,
NASM_ERR_REG_REDUCED,
NASM_ERR_JUNK_EOL,
/* Results of parse_operand. */
NASM_R_CONST,
NASM_R_SYMBOL,
NASM_R_ILLEGAL,
/* Flags for open description. */
NASM_OPEN_ARCH_V1 = 0x0,
NASM_OPEN_ARCH_V2 = 0x1,
NASM_OPEN_ARCH_V3 = 0x2,
NASM_OPEN_ARCH_V3M = 0x3,
NASM_OPEN_ARCH_MASK = 0xf,
NASM_OPEN_REDUCED_REG = 0x10,
/* Common attributes. */
NASM_ATTR_ISA_V1 = 0x01,
NASM_ATTR_ISA_V2 = 0x02,
NASM_ATTR_ISA_V3 = 0x04,
NASM_ATTR_ISA_V3M = 0x08,
NASM_ATTR_ISA_ALL = 0x0f,
/* Attributes for instructions. */
NASM_ATTR_MAC = 0x0000100,
NASM_ATTR_DIV = 0x0000200,
NASM_ATTR_FPU = 0x0000400,
NASM_ATTR_FPU_SP_EXT = 0x0000800,
NASM_ATTR_FPU_DP_EXT = 0x0001000,
NASM_ATTR_STR_EXT = 0x0002000,
NASM_ATTR_PERF_EXT = 0x0004000,
NASM_ATTR_PERF2_EXT = 0x0008000,
NASM_ATTR_AUDIO_ISAEXT = 0x0010000,
NASM_ATTR_IFC_EXT = 0x0020000,
NASM_ATTR_EX9_EXT = 0x0040000,
NASM_ATTR_FPU_FMA = 0x0080000,
NASM_ATTR_DXREG = 0x0100000,
NASM_ATTR_BRANCH = 0x0200000,
NASM_ATTR_RELAXABLE = 0x0400000,
NASM_ATTR_PCREL = 0x0800000,
NASM_ATTR_GPREL = 0x1000000,
/* Attributes for relocations. */
NASM_ATTR_HI20 = 0x10000000,
NASM_ATTR_LO12 = 0x20000000,
NASM_ATTR_LO20 = 0x40000000,
/* Attributes for registers. */
NASM_ATTR_RDREG = 0x000100
};
/* Macro for instruction attribute. */
#define ATTR(attr) NASM_ATTR_ ## attr
#define ATTR_NONE 0
#define ATTR_PCREL (ATTR (PCREL) | ATTR (BRANCH))
#define ATTR_ALL (ATTR (ISA_ALL))
#define ATTR_V2UP (ATTR_ALL & ~(ATTR (ISA_V1)))
#define ATTR_V3MUP (ATTR (ISA_V3) | ATTR (ISA_V3M))
#define ATTR_V3 (ATTR (ISA_V3))
#define ATTR_V3MEX_V1 (ATTR_ALL & ~(ATTR (ISA_V3M)))
#define ATTR_V3MEX_V2 (ATTR_V2UP & ~(ATTR (ISA_V3M)))
/* Lexical element in parsed syntax. */
typedef int lex_t;
/* Common header for hash entries. */
struct nds32_hash_entry
{
const char *name;
};
typedef struct nds32_keyword
{
const char *name;
int value;
uint64_t attr;
} keyword_t;
typedef struct nds32_opcode
{
/* Opcode for the instruction. */
const char *opcode;
/* Human readable string of this instruction. */
const char *instruction;
/* Base value of this instruction. */
uint32_t value;
/* The byte-size of the instruction. */
int isize;
/* Attributes of this instruction. */
uint64_t attr;
/* Implicit define/use. */
uint64_t defuse;
/* Parsed string for assembling. */
lex_t *syntax;
/* Number of variant. */
int variant;
/* Next form of the same mnemonic. */
struct nds32_opcode *next;
/* TODO: Extra constrains and verification.
For example, `mov55 $sp, $sp' is not allowed in v3. */
} opcode_t;
typedef struct nds32_asm_insn
{
/* Assembled instruction bytes. */
uint32_t insn;
/* The opcode structure for this instruction. */
struct nds32_opcode *opcode;
/* The field need special fix-up, used for relocation. */
const struct nds32_field *field;
/* Attributes for relocation. */
uint64_t attr;
/* Application-dependent data, e.g., expression. */
void *info;
/* Input/output registers. */
uint64_t defuse;
} nds32_asm_insn_t;
typedef struct nds32_asm_desc
{
/* The callback provided by assembler user for parse an operand,
e.g., parse integer. */
int (*parse_operand) (struct nds32_asm_desc *,
struct nds32_asm_insn *,
char **, int64_t *);
/* Result of assembling. */
int result;
/* The mach for this assembling. */
int mach;
int flags;
} nds32_asm_desc_t;
/* The field information for an operand. */
typedef struct nds32_field
{
/* Name of the field. */
const char *name;
int bitpos;
int bitsize;
int shift;
int hw_res;
int (*parse) (struct nds32_asm_desc *,
struct nds32_asm_insn *,
char **, int64_t *);
} field_t;
extern void nds32_assemble (nds32_asm_desc_t *, nds32_asm_insn_t *, char *);
extern void nds32_asm_init (nds32_asm_desc_t *, int);
#endif
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