nios2-opc.c

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/* Altera Nios II opcode list.
   Copyright (C) 2012, 2013 Free Software Foundation, Inc.
   Contributed by Nigel Gray (ngray@altera.com).
   Contributed by Mentor Graphics, Inc.
 
   This file is part of the GNU opcodes library.
 
   This library 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 3, or (at your option)
   any later version.
 
   It 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 file; see the file COPYING.  If not, write to the
   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */
 
#include "sysdep.h"
#include <stdio.h>
#include "opcode/nios2.h"
 
/* Register string table */
 
const struct nios2_reg nios2_builtin_regs[] = {
  /* Standard register names.  */
  {"zero", 0},
  {"at", 1},            /* assembler temporary */
  {"r2", 2},
  {"r3", 3},
  {"r4", 4},
  {"r5", 5},
  {"r6", 6},
  {"r7", 7},
  {"r8", 8},
  {"r9", 9},
  {"r10", 10},
  {"r11", 11},
  {"r12", 12},
  {"r13", 13},
  {"r14", 14},
  {"r15", 15},
  {"r16", 16},
  {"r17", 17},
  {"r18", 18},
  {"r19", 19},
  {"r20", 20},
  {"r21", 21},
  {"r22", 22},
  {"r23", 23},
  {"et", 24},
  {"bt", 25},
  {"gp", 26},           /* global pointer */
  {"sp", 27},           /* stack pointer */
  {"fp", 28},           /* frame pointer */
  {"ea", 29},           /* exception return address */
  {"ba", 30},           /* breakpoint return address */
  {"ra", 31},           /* return address */
 
  /* Alternative names for special registers.  */
  {"r0", 0},
  {"r1", 1},
  {"r24", 24},
  {"r25", 25},
  {"r26", 26},
  {"r27", 27},
  {"r28", 28},
  {"r29", 29},
  {"r30", 30},
  {"sstatus", 30},
  {"r31", 31},
 
  /* Control register names.  */
  {"status", 0},
  {"estatus", 1},
  {"bstatus", 2},
  {"ienable", 3},
  {"ipending", 4},
  {"cpuid", 5},
  {"ctl6", 6},
  {"exception", 7},
  {"pteaddr", 8},
  {"tlbacc", 9},
  {"tlbmisc", 10},
  {"eccinj", 11},
  {"badaddr", 12},
  {"config", 13},
  {"mpubase", 14},
  {"mpuacc", 15},
  {"ctl16", 16},
  {"ctl17", 17},
  {"ctl18", 18},
  {"ctl19", 19},
  {"ctl20", 20},
  {"ctl21", 21},
  {"ctl22", 22},
  {"ctl23", 23},
  {"ctl24", 24},
  {"ctl25", 25},
  {"ctl26", 26},
  {"ctl27", 27},
  {"ctl28", 28},
  {"ctl29", 29},
  {"ctl30", 30},
  {"ctl31", 31},
 
  /* Alternative names for special control registers.  */
  {"ctl0", 0},
  {"ctl1", 1},
  {"ctl2", 2},
  {"ctl3", 3},
  {"ctl4", 4},
  {"ctl5", 5},
  {"ctl7", 7},
  {"ctl8", 8},
  {"ctl9", 9},
  {"ctl10", 10},
  {"ctl11", 11},
  {"ctl12", 12},
  {"ctl13", 13},
  {"ctl14", 14},
  {"ctl15", 15},
 
  /* Coprocessor register names.  */
  {"c0", 0},
  {"c1", 1},
  {"c2", 2},
  {"c3", 3},
  {"c4", 4},
  {"c5", 5},
  {"c6", 6},
  {"c7", 7},
  {"c8", 8},
  {"c9", 9},
  {"c10", 10},
  {"c11", 11},
  {"c12", 12},
  {"c13", 13},
  {"c14", 14},
  {"c15", 15},
  {"c16", 16},
  {"c17", 17},
  {"c18", 18},
  {"c19", 19},
  {"c20", 20},
  {"c21", 21},
  {"c22", 22},
  {"c23", 23},
  {"c24", 24},
  {"c25", 25},
  {"c26", 26},
  {"c27", 27},
  {"c28", 28},
  {"c29", 29},
  {"c30", 30},
  {"c31", 31},
};
 
#define NIOS2_NUM_REGS \
       ((sizeof nios2_builtin_regs) / (sizeof (nios2_builtin_regs[0])))
const int nios2_num_builtin_regs = NIOS2_NUM_REGS;
 
/* This is not const in order to allow for dynamic extensions to the
   built-in instruction set.  */
struct nios2_reg *nios2_regs = (struct nios2_reg *) nios2_builtin_regs;
int nios2_num_regs = NIOS2_NUM_REGS;
#undef NIOS2_NUM_REGS
 
/* This is the opcode table used by the Nios II GNU as, disassembler
   and GDB.  */
const struct nios2_opcode nios2_builtin_opcodes[] =
{
  /* { name, args, args_test, num_args,
       match, mask, pinfo, overflow_msg } */
  {"add", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_ADD, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"addi", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_ADDI, OP_MASK_IOP, NIOS2_INSN_ADDI, signed_immed16_overflow},
  {"subi", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_ADDI, OP_MASK_IOP, NIOS2_INSN_MACRO, signed_immed16_overflow},
  {"and", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_AND, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"andhi", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_ANDHI, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"andi", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_ANDI, OP_MASK_IOP, NIOS2_INSN_ANDI, unsigned_immed16_overflow},
  {"beq", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BEQ, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"bge", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BGE, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"bgeu", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BGEU, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"bgt", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BLT, OP_MASK_IOP, NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH,
   branch_target_overflow},
  {"bgtu", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BLTU, OP_MASK_IOP, NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH,
   branch_target_overflow},
  {"ble", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BGE, OP_MASK_IOP, NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH,
   branch_target_overflow},
  {"bleu", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BGEU, OP_MASK_IOP, NIOS2_INSN_MACRO|NIOS2_INSN_CBRANCH,
   branch_target_overflow},
  {"blt", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BLT, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"bltu", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BLTU, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"bne", "s,t,o", "s,t,o,E", 3,
   OP_MATCH_BNE, OP_MASK_IOP, NIOS2_INSN_CBRANCH, branch_target_overflow},
  {"br", "o", "o,E", 1,
   OP_MATCH_BR, OP_MASK_IOP, NIOS2_INSN_UBRANCH, branch_target_overflow},
  {"break", "b", "b,E", 1,
   OP_MATCH_BREAK, OP_MASK_BREAK, 0, no_overflow},
  {"bret", "", "E", 0,
   OP_MATCH_BRET, OP_MASK, 0, no_overflow},
  {"flushd", "i(s)", "i(s)E", 2,
   OP_MATCH_FLUSHD, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"flushda", "i(s)", "i(s)E", 2,
   OP_MATCH_FLUSHDA, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"flushi", "s", "s,E", 1,
   OP_MATCH_FLUSHI, OP_MASK_FLUSHI, 0, no_overflow},
  {"flushp", "", "E", 0,
   OP_MATCH_FLUSHP, OP_MASK, 0, no_overflow},
  {"initd", "i(s)", "i(s)E", 2,
   OP_MATCH_INITD, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"initda", "i(s)", "i(s)E", 2,
   OP_MATCH_INITDA, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"initi", "s", "s,E", 1,
   OP_MATCH_INITI, OP_MASK_INITI, 0, no_overflow},
  {"call", "m", "m,E", 1,
   OP_MATCH_CALL, OP_MASK_IOP, NIOS2_INSN_CALL, call_target_overflow},
  {"callr", "s", "s,E", 1,
   OP_MATCH_CALLR, OP_MASK_CALLR, 0, no_overflow},
  {"cmpeq", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPEQ, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmpeqi", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPEQI, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"cmpge", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPGE, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmpgei", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPGEI, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"cmpgeu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPGEU, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmpgeui", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_CMPGEUI, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"cmpgt", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPLT, OP_MASK_ROPX | OP_MASK_ROP, NIOS2_INSN_MACRO, no_overflow},
  {"cmpgti", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPGEI, OP_MASK_IOP, NIOS2_INSN_MACRO, signed_immed16_overflow},
  {"cmpgtu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPLTU, OP_MASK_ROPX | OP_MASK_ROP, NIOS2_INSN_MACRO, no_overflow},
  {"cmpgtui", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_CMPGEUI, OP_MASK_IOP, NIOS2_INSN_MACRO, unsigned_immed16_overflow},
  {"cmple", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPGE, OP_MASK_ROPX | OP_MASK_ROP, NIOS2_INSN_MACRO, no_overflow},
  {"cmplei", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPLTI, OP_MASK_IOP, NIOS2_INSN_MACRO, signed_immed16_overflow},
  {"cmpleu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPGEU, OP_MASK_ROPX | OP_MASK_ROP, NIOS2_INSN_MACRO, no_overflow},
  {"cmpleui", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_CMPLTUI, OP_MASK_IOP, NIOS2_INSN_MACRO, unsigned_immed16_overflow},
  {"cmplt", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPLT, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmplti", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPLTI, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"cmpltu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPLTU, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmpltui", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_CMPLTUI, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"cmpne", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_CMPNE, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"cmpnei", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_CMPNEI, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"div", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_DIV, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"divu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_DIVU, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"jmp", "s", "s,E", 1,
   OP_MATCH_JMP, OP_MASK_JMP, 0, no_overflow},
  {"jmpi", "m", "m,E", 1,
   OP_MATCH_JMPI, OP_MASK_IOP, 0, no_overflow},
  {"ldb", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDB, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldbio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDBIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldbu", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDBU, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldbuio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDBUIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldh", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDH, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldhio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDHIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldhu", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDHU, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldhuio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDHUIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldl", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDL, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldw", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDW, OP_MASK_IOP, 0, address_offset_overflow},
  {"ldwio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_LDWIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"mov", "d,s", "d,s,E", 2,
   OP_MATCH_ADD, OP_MASK_RRT|OP_MASK_ROPX|OP_MASK_ROP, NIOS2_INSN_MACRO_MOV,
   no_overflow},
  {"movhi", "t,u", "t,u,E", 2,
   OP_MATCH_ORHI, OP_MASK_IRS|OP_MASK_IOP, NIOS2_INSN_MACRO_MOVI,
   unsigned_immed16_overflow},
  {"movui", "t,u", "t,u,E", 2,
   OP_MATCH_ORI, OP_MASK_IRS|OP_MASK_IOP, NIOS2_INSN_MACRO_MOVI,
   unsigned_immed16_overflow},
  {"movi", "t,i", "t,i,E", 2,
   OP_MATCH_ADDI, OP_MASK_IRS|OP_MASK_IOP, NIOS2_INSN_MACRO_MOVI,
   signed_immed16_overflow},
  /* movia expands to two instructions so there is no mask or match */
  {"movia", "t,o", "t,o,E", 2,
   OP_MATCH_ORHI, OP_MASK_IOP, NIOS2_INSN_MACRO_MOVIA, no_overflow},
  {"mul", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_MUL, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"muli", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_MULI, OP_MASK_IOP, 0, signed_immed16_overflow},
  {"mulxss", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_MULXSS, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"mulxsu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_MULXSU, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"mulxuu", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_MULXUU, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"nextpc", "d", "d,E", 1,
   OP_MATCH_NEXTPC, OP_MASK_NEXTPC, 0, no_overflow},
  {"nop", "", "E", 0,
   OP_MATCH_ADD, OP_MASK, NIOS2_INSN_MACRO_MOV, no_overflow},
  {"nor", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_NOR, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"or", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_OR, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"orhi", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_ORHI, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"ori", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_ORI, OP_MASK_IOP, NIOS2_INSN_ORI, unsigned_immed16_overflow},
  {"rdctl", "d,c", "d,c,E", 2,
   OP_MATCH_RDCTL, OP_MASK_RDCTL, 0, no_overflow},
  {"rdprs", "t,s,i", "t,s,i,E", 3,
   OP_MATCH_RDPRS, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"ret", "", "E", 0,
   OP_MATCH_RET, OP_MASK, 0, no_overflow},
  {"rol", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_ROL, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"roli", "d,s,j", "d,s,j,E", 3,
   OP_MATCH_ROLI, OP_MASK_ROLI, 0, unsigned_immed5_overflow},
  {"ror", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_ROR, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"sll", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_SLL, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"slli", "d,s,j", "d,s,j,E", 3,
   OP_MATCH_SLLI, OP_MASK_SLLI, 0, unsigned_immed5_overflow},
  {"sra", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_SRA, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"srai", "d,s,j", "d,s,j,E", 3,
   OP_MATCH_SRAI, OP_MASK_SRAI, 0, unsigned_immed5_overflow},
  {"srl", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_SRL, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"srli", "d,s,j", "d,s,j,E", 3,
   OP_MATCH_SRLI, OP_MASK_SRLI, 0, unsigned_immed5_overflow},
  {"stb", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STB, OP_MASK_IOP, 0, address_offset_overflow},
  {"stbio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STBIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"stc", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STC, OP_MASK_IOP, 0, address_offset_overflow},
  {"sth", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STH, OP_MASK_IOP, 0, address_offset_overflow},
  {"sthio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STHIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"stw", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STW, OP_MASK_IOP, 0, address_offset_overflow},
  {"stwio", "t,i(s)", "t,i(s)E", 3,
   OP_MATCH_STWIO, OP_MASK_IOP, 0, address_offset_overflow},
  {"sub", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_SUB, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"sync", "", "E", 0,
   OP_MATCH_SYNC, OP_MASK_SYNC, 0, no_overflow},
  {"trap", "b", "b,E", 1,
   OP_MATCH_TRAP, OP_MASK_TRAP, 0, no_overflow},
  {"eret", "", "E", 0,
   OP_MATCH_ERET, OP_MASK, 0, no_overflow},
  {"custom", "l,d,s,t", "l,d,s,t,E", 4,
   OP_MATCH_CUSTOM, OP_MASK_ROP, 0, custom_opcode_overflow},
  {"wrctl", "c,s", "c,s,E", 2,
   OP_MATCH_WRCTL, OP_MASK_WRCTL, 0, no_overflow},
  {"wrprs", "d,s", "d,s,E", 2,
   OP_MATCH_WRPRS, OP_MASK_RRT|OP_MASK_ROPX|OP_MASK_ROP, 0, no_overflow},
  {"xor", "d,s,t", "d,s,t,E", 3,
   OP_MATCH_XOR, OP_MASK_ROPX | OP_MASK_ROP, 0, no_overflow},
  {"xorhi", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_XORHI, OP_MASK_IOP, 0, unsigned_immed16_overflow},
  {"xori", "t,s,u", "t,s,u,E", 3,
   OP_MATCH_XORI, OP_MASK_IOP, NIOS2_INSN_XORI, unsigned_immed16_overflow}
};
 
#define NIOS2_NUM_OPCODES \
       ((sizeof nios2_builtin_opcodes) / (sizeof (nios2_builtin_opcodes[0])))
const int bfd_nios2_num_builtin_opcodes = NIOS2_NUM_OPCODES;
 
/* This is not const to allow for dynamic extensions to the
   built-in instruction set. */
struct nios2_opcode *nios2_opcodes =
  (struct nios2_opcode *) nios2_builtin_opcodes;
int bfd_nios2_num_opcodes = NIOS2_NUM_OPCODES;
#undef NIOS2_NUM_OPCODES