/* tic80.h -- Header file for TI TMS320C80 (MV) opcode table
- Copyright 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996-2019 Free Software Foundation, Inc.
Written by Fred Fish (fnf@cygnus.com), Cygnus Support
-This file is part of GDB, GAS, and the GNU binutils.
+ This file is part of GDB, GAS, and the GNU binutils.
-GDB, GAS, and the GNU binutils are free software; you can redistribute
-them and/or modify them under the terms of the GNU General Public
-License as published by the Free Software Foundation; either version
-1, or (at your option) any later version.
+ GDB, GAS, and the GNU binutils are free software; you can redistribute
+ them and/or modify them under the terms of the GNU General Public
+ License as published by the Free Software Foundation; either version 3,
+ or (at your option) any later version.
-GDB, GAS, and the GNU binutils are distributed in the hope that they
-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.
+ GDB, GAS, and the GNU binutils are distributed in the hope that they
+ 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 file; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this file; see the file COPYING3. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef TIC80_H
#define TIC80_H
unsigned long mask;
- /* The format of this opcode. I.E. short-immediate, register, long
- immediate, etc. FIXME: Will this ever be used? */
+ /* Special purpose flags for this opcode. */
- unsigned char format;
+ unsigned char flags;
/* An array of operand codes. Each code is an index into the operand
table. They appear in the order which the operands must appear in
operand value is legal, *ERRMSG will be unchanged (most operands
can accept any value). */
- unsigned long (*insert) PARAMS ((unsigned long instruction, long op,
- const char **errmsg));
+ unsigned long (*insert)
+ (unsigned long instruction, long op, 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 & PPC_OPERAND_SIGNED) != 0
+ if ((o->flags & TIC80_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
this operand (i.e., the instruction does not match). If the
operand is valid, *INVALID will not be changed. */
- long (*extract) PARAMS ((unsigned long instruction, int *invalid));
+ long (*extract) (unsigned long instruction, int *invalid);
/* One bit syntax flags. */
extern const struct tic80_operand tic80_operands[];
-/* Values defined for the flags field of a struct tic80_operand. */
+\f
+/* Values defined for the flags field of a struct tic80_operand.
+
+ Note that flags for all predefined symbols, such as the general purpose
+ registers (ex: r10), control registers (ex: FPST), condition codes (ex:
+ eq0.b), bit numbers (ex: gt.b), etc are large enough that they can be
+ or'd into an int where the lower bits contain the actual numeric value
+ that correponds to this predefined symbol. This way a single int can
+ contain both the value of the symbol and it's type.
+ */
+
+/* This operand must be an even register number. Floating point numbers
+ for example are stored in even/odd register pairs. */
+
+#define TIC80_OPERAND_EVEN (1 << 0)
+
+/* This operand must be an odd register number and must be one greater than
+ the register number of the previous operand. I.E. the second register in
+ an even/odd register pair. */
+
+#define TIC80_OPERAND_ODD (1 << 1)
/* This operand takes signed values. */
-#define TIC80_OPERAND_SIGNED (01)
-/* The next operand should be wrapped in parentheses rather than separated
- from this one by a comma. This is used for various instructions, like
- the load and store instructions, which want their operands to look like
- "displacement(reg)" */
-#define TIC80_OPERAND_PARENS (02)
+#define TIC80_OPERAND_SIGNED (1 << 2)
-/* This operand is a bit number and may use symbolic names such as "eq.b",
- "or.f", etc. */
-#define TIC80_OPERAND_BITNUM (04)
+/* This operand may be either a predefined constant name or a numeric value.
+ An example would be a condition code like "eq0.b" which has the numeric
+ value 0x2. */
-/* This operand names a register. The disassembler uses this to print
- register names with a leading 'r'. */
-#define TIC80_OPERAND_GPR (010)
+#define TIC80_OPERAND_NUM (1 << 3)
-/* This operand names a floating point accumulator register. The disassembler
- prints these with a leading 'a'. */
-#define TIC80_OPERAND_FPA (020)
+/* This operand should be wrapped in parentheses rather than separated
+ from the previous one by a comma. This is used for various
+ instructions, like the load and store instructions, which want
+ their operands to look like "displacement(reg)" */
-/* This operand is a relative branch displacement. The disassembler
- prints these symbolically if possible. */
-#define TIC80_OPERAND_RELATIVE (040)
+#define TIC80_OPERAND_PARENS (1 << 4)
+
+/* This operand is a PC relative branch offset. The disassembler prints
+ these symbolically if possible. Note that the offsets are taken as word
+ offsets. */
+
+#define TIC80_OPERAND_PCREL (1 << 5)
/* This flag is a hint to the disassembler for using hex as the prefered
printing format, even for small positive or negative immediate values.
Normally values in the range -999 to 999 are printed as signed decimal
values and other values are printed in hex. */
-#define TIC80_OPERAND_BITFIELD (0100)
-
-/* This operand is a condition code, which may be given symbolically as
- "eq0.b", "ne0.w", etc. */
-#define TIC80_OPERAND_CC (0200)
-/* This operand is a control register number, or may also be given
- symbolically as "EIP", "EPC", etc. */
-#define TIC80_OPERAND_CR (0400)
+#define TIC80_OPERAND_BITFIELD (1 << 6)
/* This operand may have a ":m" modifier specified by bit 17 in a short
immediate form instruction. */
-#define TIC80_OPERAND_M_SI (01000)
+
+#define TIC80_OPERAND_M_SI (1 << 7)
/* This operand may have a ":m" modifier specified by bit 15 in a long
immediate or register form instruction. */
-#define TIC80_OPERAND_M_LI (02000)
-/* Values which go in the struct tic80_opcode format field to distinguish
- between various types of instructions with the same mnemonic. FIXME: Not
- currently used? */
+#define TIC80_OPERAND_M_LI (1 << 8)
+
+/* This operand may have a ":s" modifier specified in bit 11 in a long
+ immediate or register form instruction. */
+
+#define TIC80_OPERAND_SCALED (1 << 9)
+
+/* This operand is a floating point value */
+
+#define TIC80_OPERAND_FLOAT (1 << 10)
+
+/* This operand is an byte offset from a base relocation. The lower
+ two bits of the final relocated address are ignored when the value is
+ written to the program counter. */
+
+#define TIC80_OPERAND_BASEREL (1 << 11)
+
+/* This operand is an "endmask" field for a shift instruction.
+ It is treated special in that it can have values of 0-32,
+ where 0 and 32 result in the same instruction. The assembler
+ must be able to accept both endmask values. This disassembler
+ has no way of knowing from the instruction which value was
+ given at assembly time, so it just uses '0'. */
+
+#define TIC80_OPERAND_ENDMASK (1 << 12)
+
+/* This operand is one of the 32 general purpose registers.
+ The disassembler prints these with a leading 'r'. */
+
+#define TIC80_OPERAND_GPR (1 << 27)
+
+/* This operand is a floating point accumulator register.
+ The disassembler prints these with a leading 'a'. */
+
+#define TIC80_OPERAND_FPA ( 1 << 28)
+
+/* This operand is a control register number, either numeric or
+ symbolic (like "EIF", "EPC", etc).
+ The disassembler prints these symbolically. */
+
+#define TIC80_OPERAND_CR (1 << 29)
+
+/* This operand is a condition code, either numeric or
+ symbolic (like "eq0.b", "ne0.w", etc).
+ The disassembler prints these symbolically. */
+
+#define TIC80_OPERAND_CC (1 << 30)
+
+/* This operand is a bit number, either numeric or
+ symbolic (like "eq.b", "or.f", etc).
+ The disassembler prints these symbolically.
+ Note that they appear in the instruction in 1's complement relative
+ to the values given in the manual. */
+
+#define TIC80_OPERAND_BITNUM (1 << 31)
+
+/* This mask is used to strip operand bits from an int that contains
+ both operand bits and a numeric value in the lsbs. */
+
+#define TIC80_OPERAND_MASK (TIC80_OPERAND_GPR | TIC80_OPERAND_FPA | TIC80_OPERAND_CR | TIC80_OPERAND_CC | TIC80_OPERAND_BITNUM)
+
+\f
+/* Flag bits for the struct tic80_opcode flags field. */
+
+#define TIC80_VECTOR 01 /* Is a vector instruction */
+#define TIC80_NO_R0_DEST 02 /* Register r0 cannot be a destination register */
+
+\f
+/* The opcodes library contains a table that allows translation from predefined
+ symbol names to numeric values, and vice versa. */
+
+/* Structure to hold information about predefined symbols. */
+
+struct predefined_symbol
+{
+ char *name; /* name to recognize */
+ int value;
+};
+
+#define PDS_NAME(pdsp) ((pdsp) -> name)
+#define PDS_VALUE(pdsp) ((pdsp) -> value)
+
+/* Translation array. */
+extern const struct predefined_symbol tic80_predefined_symbols[];
+/* How many members in the array. */
+extern const int tic80_num_predefined_symbols;
+
+/* Translate value to symbolic name. */
+const char *tic80_value_to_symbol (int val, int class);
+
+/* Translate symbolic name to value. */
+int tic80_symbol_to_value (char *name, int class);
-#define FMT_UNUSED 0 /* Unused */
-#define FMT_SI 1 /* Short immediate format */
-#define FMT_LI 2 /* Long immediate format */
-#define FMT_REG 3 /* Register format */
+const struct predefined_symbol *tic80_next_predefined_symbol
+ (const struct predefined_symbol *);
#endif /* TIC80_H */
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