/* Opcode table for the ARC.
- Copyright 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1997, 2001 Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
-
- This program is free software; you can redistribute it and/or modify
+
+ This file is part of GAS, the GNU Assembler, GDB, the GNU debugger, and
+ the GNU Binutils.
+
+ GAS/GDB 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 2, or (at your option)
any later version.
- This program is distributed in the hope that it will be useful,
+ GAS/GDB 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
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with GAS or GDB; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
/* List of the various cpu types.
The tables currently use bit masks to say whether the instruction or
whatever is supported by a particular cpu. This lets us have one entry
apply to several cpus.
- There may be more ARCs in the future, beyond the current project.
-
- This duplicates bfd_mach_arc_xxx. For now I wish to isolate this from bfd
- and bfd from this. Also note that these numbers are bit values as we want
- to allow for things available on more than one ARC (but not necessarily all
- ARCs). */
-
-/* The `base' cpu must be 0 (table entries are omitted for the base cpu).
- The cpu type is treated independently of endianness.
- The complete `mach' number includes endianness. */
-#define ARC_MACH_BASE 0
-#define ARC_MACH_HOST 1
-#define ARC_MACH_GRAPHICS 2
-#define ARC_MACH_AUDIO 4
-#define ARC_MACH_BIG 8
+
+ The `base' cpu must be 0. The cpu type is treated independently of
+ endianness. The complete `mach' number includes endianness.
+ These values are internal to opcodes/bfd/binutils/gas. */
+#define ARC_MACH_5 0
+#define ARC_MACH_6 1
+#define ARC_MACH_7 2
+#define ARC_MACH_8 4
+
+/* Additional cpu values can be inserted here and ARC_MACH_BIG moved down. */
+#define ARC_MACH_BIG 16
/* Mask of number of bits necessary to record cpu type. */
-#define ARC_MACH_CPU_MASK 7
+#define ARC_MACH_CPU_MASK (ARC_MACH_BIG - 1)
+
/* Mask of number of bits necessary to record cpu type + endianness. */
-#define ARC_MACH_MASK 15
+#define ARC_MACH_MASK ((ARC_MACH_BIG << 1) - 1)
-/* Type to denote an ARC instruction (at least a 32 bit unsigned long). */
-typedef unsigned long arc_insn;
+/* Type to denote an ARC instruction (at least a 32 bit unsigned int). */
+
+typedef unsigned int arc_insn;
struct arc_opcode {
- char *syntax; /* syntax of insn */
- unsigned long mask, value; /* recognize instruction if (op&mask)==value */
- int flags; /* various flag bits */
+ char *syntax; /* syntax of insn */
+ unsigned long mask, value; /* recognize insn if (op&mask) == value */
+ int flags; /* various flag bits */
/* Values for `flags'. */
/* Return CPU number, given flag bits. */
#define ARC_OPCODE_CPU(bits) ((bits) & ARC_MACH_CPU_MASK)
+
/* Return MACH number, given flag bits. */
#define ARC_OPCODE_MACH(bits) ((bits) & ARC_MACH_MASK)
+
+/* First opcode flag bit available after machine mask. */
+#define ARC_OPCODE_FLAG_START (ARC_MACH_MASK + 1)
+
+/* This insn is a conditional branch. */
+#define ARC_OPCODE_COND_BRANCH (ARC_OPCODE_FLAG_START)
+#define SYNTAX_3OP (ARC_OPCODE_COND_BRANCH << 1)
+#define SYNTAX_LENGTH (SYNTAX_3OP )
+#define SYNTAX_2OP (SYNTAX_3OP << 1)
+#define OP1_MUST_BE_IMM (SYNTAX_2OP << 1)
+#define OP1_IMM_IMPLIED (OP1_MUST_BE_IMM << 1)
+#define SYNTAX_VALID (OP1_IMM_IMPLIED << 1)
+
+#define I(x) (((x) & 31) << 27)
+#define A(x) (((x) & ARC_MASK_REG) << ARC_SHIFT_REGA)
+#define B(x) (((x) & ARC_MASK_REG) << ARC_SHIFT_REGB)
+#define C(x) (((x) & ARC_MASK_REG) << ARC_SHIFT_REGC)
+#define R(x,b,m) (((x) & (m)) << (b)) /* value X, mask M, at bit B */
+
+/* These values are used to optimize assembly and disassembly. Each insn
+ is on a list of related insns (same first letter for assembly, same
+ insn code for disassembly). */
+
+ struct arc_opcode *next_asm; /* Next instr to try during assembly. */
+ struct arc_opcode *next_dis; /* Next instr to try during disassembly. */
+
+/* Macros to create the hash values for the lists. */
+#define ARC_HASH_OPCODE(string) \
+ ((string)[0] >= 'a' && (string)[0] <= 'z' ? (string)[0] - 'a' : 26)
+#define ARC_HASH_ICODE(insn) \
+ ((unsigned int) (insn) >> 27)
+
+ /* Macros to access `next_asm', `next_dis' so users needn't care about the
+ underlying mechanism. */
+#define ARC_OPCODE_NEXT_ASM(op) ((op)->next_asm)
+#define ARC_OPCODE_NEXT_DIS(op) ((op)->next_dis)
};
+/* this is an "insert at front" linked list per Metaware spec
+ that new definitions override older ones. */
+extern struct arc_opcode *arc_ext_opcodes;
+
struct arc_operand_value {
- char *name; /* eg: "eq" */
- short value; /* eg: 1 */
- unsigned char type; /* index into `arc_operands' */
- unsigned char flags; /* various flag bits */
+ char *name; /* eg: "eq" */
+ short value; /* eg: 1 */
+ unsigned char type; /* index into `arc_operands' */
+ unsigned char flags; /* various flag bits */
/* Values for `flags'. */
#define ARC_OPVAL_MACH(bits) ((bits) & ARC_MACH_MASK)
};
+struct arc_ext_operand_value {
+ struct arc_ext_operand_value *next;
+ struct arc_operand_value operand;
+};
+
+extern struct arc_ext_operand_value *arc_ext_operands;
+
struct arc_operand {
- /* One of the insn format chars. */
+/* One of the insn format chars. */
unsigned char fmt;
- /* The number of bits in the operand (may be unused for a modifier). */
+/* The number of bits in the operand (may be unused for a modifier). */
unsigned char bits;
- /* How far the operand is left shifted in the instruction, or
- the modifier's flag bit (may be unused for a modifier. */
+/* How far the operand is left shifted in the instruction, or
+ the modifier's flag bit (may be unused for a modifier. */
unsigned char shift;
- /* Various flag bits. */
+/* Various flag bits. */
int flags;
/* Values for `flags'. */
in special ways. */
#define ARC_OPERAND_FAKE 0x100
+/* separate flags operand for j and jl instructions */
+#define ARC_OPERAND_JUMPFLAGS 0x200
+
+/* allow warnings and errors to be issued after call to insert_xxxxxx */
+#define ARC_OPERAND_WARN 0x400
+#define ARC_OPERAND_ERROR 0x800
+
+/* this is a load operand */
+#define ARC_OPERAND_LOAD 0x8000
+
+/* this is a store operand */
+#define ARC_OPERAND_STORE 0x10000
+
/* Modifier values. */
/* A dot is required before a suffix. Eg: .le */
#define ARC_MOD_DOT 0x1000
/* Non-zero if the operand type is really a modifier. */
#define ARC_MOD_P(X) ((X) & ARC_MOD_BITS)
- /* Insertion function. This is used by the assembler. To insert an
- operand value into an instruction, check this field.
+/* enforce read/write only register restrictions */
+#define ARC_REGISTER_READONLY 0x01
+#define ARC_REGISTER_WRITEONLY 0x02
+#define ARC_REGISTER_NOSHORT_CUT 0x04
- If it is NULL, execute
- i |= (p & ((1 << o->bits) - 1)) << o->shift;
- (I is the instruction which we are filling in, O is a pointer to
- this structure, and OP is the opcode value; this assumes twos
- complement arithmetic).
+/* Insertion function. This is used by the assembler. To insert an
+ operand value into an instruction, check this field.
- If this field is not NULL, then simply call it with the
- instruction and the operand value. It will return the new value
- of the instruction. If the ERRMSG argument is not NULL, then if
- the operand value is illegal, *ERRMSG will be set to a warning
- string (the operand will be inserted in any case). If the
- operand value is legal, *ERRMSG will be unchanged.
+ If it is NULL, execute
+ i |= (p & ((1 << o->bits) - 1)) << o->shift;
+ (I is the instruction which we are filling in, O is a pointer to
+ this structure, and OP is the opcode value; this assumes twos
+ complement arithmetic).
+
+ If this field is not NULL, then simply call it with the
+ instruction and the operand value. It will return the new value
+ of the instruction. If the ERRMSG argument is not NULL, then if
+ the operand value is illegal, *ERRMSG will be set to a warning
+ string (the operand will be inserted in any case). If the
+ operand value is legal, *ERRMSG will be unchanged.
- REG is non-NULL when inserting a register value. */
+ REG is non-NULL when inserting a register value. */
arc_insn (*insert) PARAMS ((arc_insn insn,
const struct arc_operand *operand, int mods,
const struct arc_operand_value *reg, long value,
const char **errmsg));
- /* Extraction function. This is used by the disassembler. To
- extract this operand type from an instruction, check this field.
-
- If it is NULL, compute
- op = ((i) >> o->shift) & ((1 << o->bits) - 1);
- if ((o->flags & ARC_OPERAND_SIGNED) != 0
- && (op & (1 << (o->bits - 1))) != 0)
- op -= 1 << o->bits;
- (I is the instruction, O is a pointer to this structure, and OP
- is the result; this assumes twos complement arithmetic).
-
- If this field is not NULL, then simply call it with the
- instruction value. It will return the value of the operand. If
- the INVALID argument is not NULL, *INVALID will be set to
- non-zero if this operand type can not actually be extracted from
- this operand (i.e., the instruction does not match). If the
- operand is valid, *INVALID will not be changed.
+/* Extraction function. This is used by the disassembler. To
+ extract this operand type from an instruction, check this field.
+
+ If it is NULL, compute
+ op = ((i) >> o->shift) & ((1 << o->bits) - 1);
+ if ((o->flags & ARC_OPERAND_SIGNED) != 0
+ && (op & (1 << (o->bits - 1))) != 0)
+ op -= 1 << o->bits;
+ (I is the instruction, O is a pointer to this structure, and OP
+ is the result; this assumes twos complement arithmetic).
+
+ If this field is not NULL, then simply call it with the
+ instruction value. It will return the value of the operand. If
+ the INVALID argument is not NULL, *INVALID will be set to
+ non-zero if this operand type can not actually be extracted from
+ this operand (i.e., the instruction does not match). If the
+ operand is valid, *INVALID will not be changed.
- INSN is a pointer to an array of two `arc_insn's. The first element is
- the insn, the second is the limm if present.
+ INSN is a pointer to an array of two `arc_insn's. The first element is
+ the insn, the second is the limm if present.
- Operands that have a printable form like registers and suffixes have
- their struct arc_operand_value pointer stored in OPVAL. */
+ Operands that have a printable form like registers and suffixes have
+ their struct arc_operand_value pointer stored in OPVAL. */
long (*extract) PARAMS ((arc_insn *insn,
const struct arc_operand *operand,
int *invalid));
};
-/* Bits that say what version of cpu we have.
- These should be passed to arc_init_opcode_tables.
- At present, all there is is the cpu type. */
+/* Bits that say what version of cpu we have. These should be passed to
+ arc_init_opcode_tables. At present, all there is is the cpu type. */
/* CPU number, given value passed to `arc_init_opcode_tables'. */
#define ARC_HAVE_CPU(bits) ((bits) & ARC_MACH_CPU_MASK)
#define ARC_SHIFT_REGC 9
#define ARC_MASK_REG 63
+/* Delay slot types. */
+#define ARC_DELAY_NONE 0 /* no delay slot */
+#define ARC_DELAY_NORMAL 1 /* delay slot in both cases */
+#define ARC_DELAY_JUMP 2 /* delay slot only if branch taken */
+
/* Non-zero if X will fit in a signed 9 bit field. */
#define ARC_SHIMM_CONST_P(x) ((long) (x) >= -256 && (long) (x) <= 255)
extern const struct arc_operand arc_operands[];
extern const int arc_operand_count;
-extern const struct arc_opcode arc_opcodes[];
+extern struct arc_opcode arc_opcodes[];
extern const int arc_opcodes_count;
extern const struct arc_operand_value arc_suffixes[];
extern const int arc_suffixes_count;
/* Utility fns in arc-opc.c. */
int arc_get_opcode_mach PARAMS ((int, int));
+
/* `arc_opcode_init_tables' must be called before `arc_xxx_supported'. */
void arc_opcode_init_tables PARAMS ((int));
void arc_opcode_init_insert PARAMS ((void));
void arc_opcode_init_extract PARAMS ((void));
+const struct arc_opcode *arc_opcode_lookup_asm PARAMS ((const char *));
+const struct arc_opcode *arc_opcode_lookup_dis PARAMS ((unsigned int));
int arc_opcode_limm_p PARAMS ((long *));
-const struct arc_operand_value *arc_opcode_lookup_suffix PARAMS ((const struct arc_operand *type, int value));
+const struct arc_operand_value *arc_opcode_lookup_suffix
+ PARAMS ((const struct arc_operand *type, int value));
int arc_opcode_supported PARAMS ((const struct arc_opcode *));
int arc_opval_supported PARAMS ((const struct arc_operand_value *));
+int arc_limm_fixup_adjust PARAMS ((arc_insn));
+int arc_insn_is_j PARAMS ((arc_insn));
+int arc_insn_not_jl PARAMS ((arc_insn));
+int arc_operand_type PARAMS ((int));
+struct arc_operand_value *get_ext_suffix PARAMS ((char *));
+int arc_get_noshortcut_flag PARAMS ((void));
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