/* Opcode table for the TI MSP430 microcontrollers
Copyright 2002, 2004 Free Software Foundation, Inc.
Contributed by Dmitry Diky <diwil@mail.ru>
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef __MSP430_H_
#define __MSP430_H_
struct msp430_operand_s
{
int ol; /* Operand length words. */
int am; /* Addr mode. */
int reg; /* Register. */
int mode; /* Pperand mode. */
#define OP_REG 0
#define OP_EXP 1
#ifndef DASM_SECTION
expressionS exp;
#endif
};
#define BYTE_OPERATION (1 << 6) /* Byte operation flag for all instructions. */
struct msp430_opcode_s
{
char *name;
int fmt;
int insn_opnumb;
int bin_opcode;
int bin_mask;
};
#define MSP_INSN(name, size, numb, bin, mask) { #name, size, numb, bin, mask }
static struct msp430_opcode_s msp430_opcodes[] =
{
MSP_INSN (and, 1, 2, 0xf000, 0xf000),
MSP_INSN (inv, 0, 1, 0xe330, 0xfff0),
MSP_INSN (xor, 1, 2, 0xe000, 0xf000),
MSP_INSN (setz, 0, 0, 0xd322, 0xffff),
MSP_INSN (setc, 0, 0, 0xd312, 0xffff),
MSP_INSN (eint, 0, 0, 0xd232, 0xffff),
MSP_INSN (setn, 0, 0, 0xd222, 0xffff),
MSP_INSN (bis, 1, 2, 0xd000, 0xf000),
MSP_INSN (clrz, 0, 0, 0xc322, 0xffff),
MSP_INSN (clrc, 0, 0, 0xc312, 0xffff),
MSP_INSN (dint, 0, 0, 0xc232, 0xffff),
MSP_INSN (clrn, 0, 0, 0xc222, 0xffff),
MSP_INSN (bic, 1, 2, 0xc000, 0xf000),
MSP_INSN (bit, 1, 2, 0xb000, 0xf000),
MSP_INSN (dadc, 0, 1, 0xa300, 0xff30),
MSP_INSN (dadd, 1, 2, 0xa000, 0xf000),
MSP_INSN (tst, 0, 1, 0x9300, 0xff30),
MSP_INSN (cmp, 1, 2, 0x9000, 0xf000),
MSP_INSN (decd, 0, 1, 0x8320, 0xff30),
MSP_INSN (dec, 0, 1, 0x8310, 0xff30),
MSP_INSN (sub, 1, 2, 0x8000, 0xf000),
MSP_INSN (sbc, 0, 1, 0x7300, 0xff30),
MSP_INSN (subc, 1, 2, 0x7000, 0xf000),
MSP_INSN (adc, 0, 1, 0x6300, 0xff30),
MSP_INSN (rlc, 0, 2, 0x6000, 0xf000),
MSP_INSN (addc, 1, 2, 0x6000, 0xf000),
MSP_INSN (incd, 0, 1, 0x5320, 0xff30),
MSP_INSN (inc, 0, 1, 0x5310, 0xff30),
MSP_INSN (rla, 0, 2, 0x5000, 0xf000),
MSP_INSN (add, 1, 2, 0x5000, 0xf000),
MSP_INSN (nop, 0, 0, 0x4303, 0xffff),
MSP_INSN (clr, 0, 1, 0x4300, 0xff30),
MSP_INSN (ret, 0, 0, 0x4130, 0xff30),
MSP_INSN (pop, 0, 1, 0x4130, 0xff30),
MSP_INSN (br, 0, 3, 0x4000, 0xf000),
MSP_INSN (mov, 1, 2, 0x4000, 0xf000),
MSP_INSN (jmp, 3, 1, 0x3c00, 0xfc00),
MSP_INSN (jl, 3, 1, 0x3800, 0xfc00),
MSP_INSN (jge, 3, 1, 0x3400, 0xfc00),
MSP_INSN (jn, 3, 1, 0x3000, 0xfc00),
MSP_INSN (jc, 3, 1, 0x2c00, 0xfc00),
MSP_INSN (jhs, 3, 1, 0x2c00, 0xfc00),
MSP_INSN (jnc, 3, 1, 0x2800, 0xfc00),
MSP_INSN (jlo, 3, 1, 0x2800, 0xfc00),
MSP_INSN (jz, 3, 1, 0x2400, 0xfc00),
MSP_INSN (jeq, 3, 1, 0x2400, 0xfc00),
MSP_INSN (jnz, 3, 1, 0x2000, 0xfc00),
MSP_INSN (jne, 3, 1, 0x2000, 0xfc00),
MSP_INSN (reti, 2, 0, 0x1300, 0xffc0),
MSP_INSN (call, 2, 1, 0x1280, 0xffc0),
MSP_INSN (push, 2, 1, 0x1200, 0xff80),
MSP_INSN (sxt, 2, 1, 0x1180, 0xffc0),
MSP_INSN (rra, 2, 1, 0x1100, 0xff80),
MSP_INSN (swpb, 2, 1, 0x1080, 0xffc0),
MSP_INSN (rrc, 2, 1, 0x1000, 0xff80),
/* Simple polymorphs. */
MSP_INSN (beq, 4, 0, 0, 0xffff),
MSP_INSN (bne, 4, 1, 0, 0xffff),
MSP_INSN (blt, 4, 2, 0, 0xffff),
MSP_INSN (bltu, 4, 3, 0, 0xffff),
MSP_INSN (bge, 4, 4, 0, 0xffff),
MSP_INSN (bgeu, 4, 5, 0, 0xffff),
MSP_INSN (bltn, 4, 6, 0, 0xffff),
MSP_INSN (jump, 4, 7, 0, 0xffff),
/* Long polymorphs. */
MSP_INSN (bgt, 5, 0, 0, 0xffff),
MSP_INSN (bgtu, 5, 1, 0, 0xffff),
MSP_INSN (bleu, 5, 2, 0, 0xffff),
MSP_INSN (ble, 5, 3, 0, 0xffff),
/* End of instruction set. */
{ NULL, 0, 0, 0, 0 }
};
/* GCC uses the some condition codes which we'll
implement as new polymorph instructions.
COND EXPL SHORT JUMP LONG JUMP
===============================================
eq == jeq jne +4; br lab
ne != jne jeq +4; br lab
ltn honours no-overflow flag
ltn < jn jn +2; jmp +4; br lab
lt < jl jge +4; br lab
ltu < jlo lhs +4; br lab
le <= see below
leu <= see below
gt > see below
gtu > see below
ge >= jge jl +4; br lab
geu >= jhs jlo +4; br lab
===============================================
Therefore, new opcodes are (BranchEQ -> beq; and so on...)
beq,bne,blt,bltn,bltu,bge,bgeu
'u' means unsigned compares
Also, we add 'jump' instruction:
jump UNCOND -> jmp br lab
They will have fmt == 4, and insn_opnumb == number of instruction. */
struct rcodes_s
{
char * name;
int index; /* Corresponding insn_opnumb. */
int sop; /* Opcode if jump length is short. */
long lpos; /* Label position. */
long lop0; /* Opcode 1 _word_ (16 bits). */
long lop1; /* Opcode second word. */
long lop2; /* Opcode third word. */
};
#define MSP430_RLC(n,i,sop,o1) \
{#n, i, sop, 2, (o1 + 2), 0x4010, 0}
static struct rcodes_s msp430_rcodes[] =
{
MSP430_RLC (beq, 0, 0x2400, 0x2000),
MSP430_RLC (bne, 1, 0x2000, 0x2400),
MSP430_RLC (blt, 2, 0x3800, 0x3400),
MSP430_RLC (bltu, 3, 0x2800, 0x2c00),
MSP430_RLC (bge, 4, 0x3400, 0x3800),
MSP430_RLC (bgeu, 5, 0x2c00, 0x2800),
{"bltn", 6, 0x3000, 3, 0x3000 + 1, 0x3c00 + 2,0x4010},
{"jump", 7, 0x3c00, 1, 0x4010, 0, 0},
{0,0,0,0,0,0,0}
};
#undef MSP430_RLC
/* More difficult than above and they have format 5.
COND EXPL SHORT LONG
=================================================================
gt > jeq +2; jge label jeq +6; jl +4; br label
gtu > jeq +2; jhs label jeq +6; jlo +4; br label
leu <= jeq label; jlo label jeq +2; jhs +4; br label
le <= jeq label; jl label jeq +2; jge +4; br label
================================================================= */
struct hcodes_s
{
char * name;
int index; /* Corresponding insn_opnumb. */
int tlab; /* Number of labels in short mode. */
int op0; /* Opcode for first word of short jump. */
int op1; /* Opcode for second word of short jump. */
int lop0; /* Opcodes for long jump mode. */
int lop1;
int lop2;
};
static struct hcodes_s msp430_hcodes[] =
{
{"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x4010 },
{"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x4010 },
{"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x4010 },
{"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x4010 },
{0,0,0,0,0,0,0,0}
};
#endif