From 32a0dad5b4766cc6369dbca2cab90fa0fd388acc Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Fri, 10 Feb 1995 03:02:09 +0000 Subject: [PATCH 1/1] * arc.h (ARC_MACH_{BASE,HOST,GRAPHICS,AUDIO}): Define. (ARC_MACH_MASK, ARC_OPCODE_MACH, ARC_OPVAL_MACH): Define. (ARC_HAVE_MULT_SHIFT): Delete. (ARC_HAVE_MACH): Define. (struct arc_opcode): New field `flags'. (struct arc_operand_value): Ditto. (arc_opcode_supported): New function. (arc_opval_supported): Ditto. --- include/opcode/ChangeLog | 13 +++ include/opcode/arc.h | 217 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 230 insertions(+) create mode 100644 include/opcode/arc.h diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog index d9606dad9e8..5694c3252bb 100644 --- a/include/opcode/ChangeLog +++ b/include/opcode/ChangeLog @@ -1,3 +1,16 @@ +start-sanitize-arc +Thu Feb 9 18:55:59 1995 Doug Evans + + * arc.h (ARC_MACH_{BASE,HOST,GRAPHICS,AUDIO}): Define. + (ARC_MACH_MASK, ARC_OPCODE_MACH, ARC_OPVAL_MACH): Define. + (ARC_HAVE_MULT_SHIFT): Delete. + (ARC_HAVE_MACH): Define. + (struct arc_opcode): New field `flags'. + (struct arc_operand_value): Ditto. + (arc_opcode_supported): New function. + (arc_opval_supported): Ditto. +end-sanitize-arc + Mon Feb 6 10:35:23 1995 J.T. Conklin * i386.h: added cpuid instruction , and dr[0-7] aliases for the diff --git a/include/opcode/arc.h b/include/opcode/arc.h new file mode 100644 index 00000000000..edc7f5c3774 --- /dev/null +++ b/include/opcode/arc.h @@ -0,0 +1,217 @@ +/* Opcode table for the ARC. + Copyright 1994, 1995 Free Software Foundation, Inc. + Contributed by Doug Evans (dje@cygnus.com). + + 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 2, 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., 675 Mass Ave, Cambridge, MA 02139, 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. */ + +/* The `base' cpu must be 0 (table entries are omitted for the base cpu). */ +#define ARC_MACH_BASE 0 +#define ARC_MACH_HOST 1 +#define ARC_MACH_GRAPHICS 2 +#define ARC_MACH_AUDIO 4 + +/* Mask of number of bits necessary to record cpu type. */ +#define ARC_MACH_MASK 7 + +/* Type to denote an ARC instruction (at least a 32 bit unsigned long). */ +typedef unsigned long 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 */ + +/* Values for `flags'. */ + +/* Return MACH number, given flag bits. */ +#define ARC_OPCODE_MACH(bits) ((bits) & ARC_MACH_MASK) +}; + +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 */ + +/* Values for `flags'. */ + +/* Return MACH number, given flag bits. */ +#define ARC_OPVAL_MACH(bits) ((bits) & ARC_MACH_MASK) +}; + +struct arc_operand { + /* One of the insn format chars. */ + unsigned char fmt; + + /* 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. */ + unsigned char shift; + + /* Various flag bits. */ + int flags; + +/* Values for `flags'. */ + +/* This operand is a suffix to the opcode. */ +#define ARC_OPERAND_SUFFIX 1 + +/* This operand is a relative branch displacement. The disassembler + prints these symbolically if possible. */ +#define ARC_OPERAND_RELATIVE 2 + +/* This operand is an absolute branch address. The disassembler + prints these symbolically if possible. */ +#define ARC_OPERAND_ABSOLUTE 4 + +/* This operand takes signed values. */ +#define ARC_OPERAND_SIGNED 8 + +/* This operand takes signed values, but also accepts a full positive + range of values. That is, if bits is 16, it takes any value from + -0x8000 to 0xffff. */ +#define ARC_OPERAND_SIGNOPT 0x10 + +/* This operand should be regarded as a negative number for the + purposes of overflow checking (i.e., the normal most negative + number is disallowed and one more than the normal most positive + number is allowed). This flag will only be set for a signed + operand. */ +#define ARC_OPERAND_NEGATIVE 0x20 + +/* This operand doesn't really exist. The program uses these operands + in special ways. */ +#define ARC_OPERAND_FAKE 0x40 + +/* Modifier values. */ +/* A dot is required before a suffix. Eg: .le */ +#define ARC_MOD_DOT 0x1000 + +/* A normal register is allowed (not used, but here for completeness). */ +#define ARC_MOD_REG 0x2000 + +/* An auxiliary register name is expected. */ +#define ARC_MOD_AUXREG 0x4000 + +/* Sum of all ARC_MOD_XXX bits. */ +#define ARC_MOD_BITS 0x7000 + +/* 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. + + 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. */ + + long (*extract) PARAMS ((arc_insn *insn, + const struct arc_operand *operand, + int mods, const struct arc_operand_value **opval, + 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. */ + +/* MACH number, given value passed to `arc_init_opcode_tables'. */ +#define ARC_HAVE_MACH(bits) ((bits) & ARC_MACH_MASK) + +/* Special register values: */ +#define ARC_REG_SHIMM_UPDATE 61 +#define ARC_REG_SHIMM 63 +#define ARC_REG_LIMM 62 + +/* Non-zero if REG is a constant marker. */ +#define ARC_REG_CONSTANT_P(REG) ((REG) >= 61) + +/* Positions and masks of various fields: */ +#define ARC_SHIFT_REGA 21 +#define ARC_SHIFT_REGB 15 +#define ARC_SHIFT_REGC 9 +#define ARC_MASK_REG 63 + +/* 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 const int arc_opcodes_count; +extern const struct arc_operand_value arc_suffixes[]; +extern const int arc_suffixes_count; +extern const struct arc_operand_value arc_reg_names[]; +extern const int arc_reg_names_count; +extern unsigned char arc_operand_map[]; + +/* Utility fns in arc-opc.c. */ +/* `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)); +int arc_opcode_limm_p PARAMS ((long *)); +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 *)); -- 2.30.2