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author | cvs2svn <> | 2011-12-08 20:47:29 +0000 |
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committer | cvs2svn <> | 2011-12-08 20:47:29 +0000 |
commit | 043beeed5375bcc7982af475b1d599e475f0467a (patch) | |
tree | e4a3f7b6abc9819aaf88a8bb5ff54698f7d15200 /include/opcode/tic80.h | |
parent | ad0835bc5e9652f42535584b12137a955ac68789 (diff) | |
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Diffstat (limited to 'include/opcode/tic80.h')
-rw-r--r-- | include/opcode/tic80.h | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/include/opcode/tic80.h b/include/opcode/tic80.h deleted file mode 100644 index 43c84be57..000000000 --- a/include/opcode/tic80.h +++ /dev/null @@ -1,283 +0,0 @@ -/* tic80.h -- Header file for TI TMS320C80 (MV) opcode table - Copyright 1996, 1997, 2003, 2010 Free Software Foundation, Inc. - Written by Fred Fish (fnf@cygnus.com), Cygnus Support - - 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 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. - - 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 - -/* The opcode table is an array of struct tic80_opcode. */ - -struct tic80_opcode -{ - /* The opcode name. */ - - const char *name; - - /* The opcode itself. Those bits which will be filled in with operands - are zeroes. */ - - unsigned long opcode; - - /* The opcode mask. This is used by the disassembler. This is a mask - containing ones indicating those bits which must match the opcode - field, and zeroes indicating those bits which need not match (and are - presumably filled in by operands). */ - - unsigned long mask; - - /* Special purpose flags for this opcode. */ - - 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 - assembly code, and are terminated by a zero. FIXME: Adjust size to - match actual requirements when TIc80 support is complete */ - - unsigned char operands[8]; -}; - -/* The table itself is sorted by major opcode number, and is otherwise in - the order in which the disassembler should consider instructions. - FIXME: This isn't currently true. */ - -extern const struct tic80_opcode tic80_opcodes[]; -extern const int tic80_num_opcodes; - - -/* The operands table is an array of struct tic80_operand. */ - -struct tic80_operand -{ - /* The number of bits in the operand. */ - - int bits; - - /* How far the operand is left shifted in the instruction. */ - - int shift; - - /* 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 |= (op & ((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 (most operands - can accept any value). */ - - 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 & 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 - 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. */ - - long (*extract) (unsigned long instruction, int *invalid); - - /* One bit syntax flags. */ - - unsigned long flags; -}; - -/* Elements in the table are retrieved by indexing with values from - the operands field of the tic80_opcodes table. */ - -extern const struct tic80_operand tic80_operands[]; - - -/* 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 (1 << 2) - -/* 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. */ - -#define TIC80_OPERAND_NUM (1 << 3) - -/* 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)" */ - -#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 (1 << 6) - -/* This operand may have a ":m" modifier specified by bit 17 in a short - immediate form instruction. */ - -#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 (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) - - -/* 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 */ - - -/* 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); - -const struct predefined_symbol *tic80_next_predefined_symbol - (const struct predefined_symbol *); - -#endif /* TIC80_H */ |