diff options
Diffstat (limited to 'include/opcode/arc.h')
| -rw-r--r-- | include/opcode/arc.h | 243 |
1 files changed, 101 insertions, 142 deletions
diff --git a/include/opcode/arc.h b/include/opcode/arc.h index d396b2a82..a1e0ca152 100644 --- a/include/opcode/arc.h +++ b/include/opcode/arc.h @@ -1,110 +1,93 @@ /* Opcode table for the ARC. - Copyright 1994, 1995, 1997, 2000 Free Software Foundation, Inc. + Copyright 1994, 1995, 1997 Free Software Foundation, Inc. Contributed by Doug Evans (dje@cygnus.com). - This file is part of GAS, the GNU Assembler, GDB, the GNU debugger, and - the GNU Binutils. +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. +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. - 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 - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - 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. */ +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 +GNU General Public License for more details. +You should have received a copy of the GNU General Public License +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. - 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 + 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. + These values are internal to opcodes/bfd/binutils/gas. */ +#define ARC_MACH_BASE 0 +#define ARC_MACH_UNUSED1 1 +#define ARC_MACH_UNUSED2 2 +#define ARC_MACH_UNUSED4 4 /* Additional cpu values can be inserted here and ARC_MACH_BIG moved down. */ -#define ARC_MACH_BIG 16 +#define ARC_MACH_BIG 8 /* Mask of number of bits necessary to record cpu type. */ -#define ARC_MACH_CPU_MASK (ARC_MACH_BIG - 1) - +#define ARC_MACH_CPU_MASK 7 /* Mask of number of bits necessary to record cpu type + endianness. */ -#define ARC_MACH_MASK ((ARC_MACH_BIG << 1) - 1) +#define ARC_MACH_MASK 15 /* 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 insn 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) - +#define ARC_OPCODE_FLAG_START ((ARC_MACH_MASK + 1) << 0) /* 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. */ + + /* 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 instruction to try during assembly. */ + struct arc_opcode *next_dis; /* Next instruction 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. */ + /* 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. */ -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'. */ @@ -114,23 +97,18 @@ struct arc_operand_value { #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; -} *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'. */ @@ -172,19 +150,6 @@ struct arc_operand { 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 @@ -201,57 +166,52 @@ struct arc_operand { /* Non-zero if the operand type is really a modifier. */ #define ARC_MOD_P(X) ((X) & ARC_MOD_BITS) -/* enforce read/write only register restrictions */ -#define ARC_REGISTER_READONLY 0x01 -#define ARC_REGISTER_WRITEONLY 0x02 -#define ARC_REGISTER_NOSHORT_CUT 0x04 - -/* Insertion function. This is used by the assembler. To insert an - operand value into an instruction, check this field. - - 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. */ + /* Insertion function. This is used by the assembler. To insert an + operand value into an instruction, check this field. + + 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. */ 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. - - 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. */ + /* 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. + + 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, @@ -259,8 +219,9 @@ struct arc_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) @@ -282,16 +243,16 @@ struct arc_operand { #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 */ +#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 struct arc_opcode arc_opcodes[]; +extern /*const*/ 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; @@ -301,7 +262,6 @@ extern unsigned char arc_operand_map[]; /* 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)); @@ -309,7 +269,6 @@ 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 *)); |