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darling-gdb/opcodes/or32-opc.c
Nick Clifton 9b201bb5e5 Change source files over to GPLv3.
2007-07-05 09:49:03 +00:00

1019 lines
37 KiB
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/* Table of opcodes for the OpenRISC 1000 ISA.
Copyright 2002, 2004, 2005, 2007 Free Software Foundation, Inc.
Contributed by Damjan Lampret (lampret@opencores.org).
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 program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/* We treat all letters the same in encode/decode routines so
we need to assign some characteristics to them like signess etc. */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "safe-ctype.h"
#include "ansidecl.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "opcode/or32.h"
const struct or32_letter or32_letters[] =
{
{ 'A', NUM_UNSIGNED },
{ 'B', NUM_UNSIGNED },
{ 'D', NUM_UNSIGNED },
{ 'I', NUM_SIGNED },
{ 'K', NUM_UNSIGNED },
{ 'L', NUM_UNSIGNED },
{ 'N', NUM_SIGNED },
{ '0', NUM_UNSIGNED },
{ '\0', 0 } /* Dummy entry. */
};
/* Opcode encoding:
machine[31:30]: first two bits of opcode
00 - neither of source operands is GPR
01 - second source operand is GPR (rB)
10 - first source operand is GPR (rA)
11 - both source operands are GPRs (rA and rB)
machine[29:26]: next four bits of opcode
machine[25:00]: instruction operands (specific to individual instruction)
Recommendation: irrelevant instruction bits should be set with a value of
bits in same positions of instruction preceding current instruction in the
code (when assembling). */
#define EFN &l_none
#ifdef HAS_EXECUTION
#define EF(func) &(func)
#define EFI &l_invalid
#else /* HAS_EXECUTION */
#define EF(func) EFN
#define EFI EFN
#endif /* HAS_EXECUTION */
const struct or32_opcode or32_opcodes[] =
{
{ "l.j", "N", "00 0x0 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_j), OR32_IF_DELAY },
{ "l.jal", "N", "00 0x1 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_jal), OR32_IF_DELAY },
{ "l.bnf", "N", "00 0x3 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bnf), OR32_IF_DELAY | OR32_R_FLAG},
{ "l.bf", "N", "00 0x4 NNNNN NNNNN NNNN NNNN NNNN NNNN", EF(l_bf), OR32_IF_DELAY | OR32_R_FLAG },
{ "l.nop", "K", "00 0x5 01--- ----- KKKK KKKK KKKK KKKK", EF(l_nop), 0 },
{ "l.movhi", "rD,K", "00 0x6 DDDDD ----0 KKKK KKKK KKKK KKKK", EF(l_movhi), 0 }, /*MM*/
{ "l.macrc", "rD", "00 0x6 DDDDD ----1 0000 0000 0000 0000", EF(l_macrc), 0 }, /*MM*/
{ "l.sys", "K", "00 0x8 00000 00000 KKKK KKKK KKKK KKKK", EF(l_sys), 0 },
{ "l.trap", "K", "00 0x8 01000 00000 KKKK KKKK KKKK KKKK", EF(l_trap), 0 }, /* CZ 21/06/01 */
{ "l.msync", "", "00 0x8 10000 00000 0000 0000 0000 0000", EFN, 0 },
{ "l.psync", "", "00 0x8 10100 00000 0000 0000 0000 0000", EFN, 0 },
{ "l.csync", "", "00 0x8 11000 00000 0000 0000 0000 0000", EFN, 0 },
{ "l.rfe", "", "00 0x9 ----- ----- ---- ---- ---- ----", EF(l_rfe), OR32_IF_DELAY },
{ "lv.all_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
{ "lv.all_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
{ "lv.all_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
{ "lv.all_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
{ "lv.all_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
{ "lv.all_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
{ "lv.all_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
{ "lv.all_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
{ "lv.all_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
{ "lv.all_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
{ "lv.all_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
{ "lv.all_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
{ "lv.any_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x0", EFI, 0 },
{ "lv.any_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x1", EFI, 0 },
{ "lv.any_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x2", EFI, 0 },
{ "lv.any_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x3", EFI, 0 },
{ "lv.any_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x4", EFI, 0 },
{ "lv.any_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x5", EFI, 0 },
{ "lv.any_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x6", EFI, 0 },
{ "lv.any_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x7", EFI, 0 },
{ "lv.any_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x8", EFI, 0 },
{ "lv.any_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0x9", EFI, 0 },
{ "lv.any_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xA", EFI, 0 },
{ "lv.any_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x2 0xB", EFI, 0 },
{ "lv.add.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x0", EFI, 0 },
{ "lv.add.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x1", EFI, 0 },
{ "lv.adds.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x2", EFI, 0 },
{ "lv.adds.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x3", EFI, 0 },
{ "lv.addu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x4", EFI, 0 },
{ "lv.addu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x5", EFI, 0 },
{ "lv.addus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x6", EFI, 0 },
{ "lv.addus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x7", EFI, 0 },
{ "lv.and", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x8", EFI, 0 },
{ "lv.avg.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0x9", EFI, 0 },
{ "lv.avg.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x3 0xA", EFI, 0 },
{ "lv.cmp_eq.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x0", EFI, 0 },
{ "lv.cmp_eq.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x1", EFI, 0 },
{ "lv.cmp_ge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x2", EFI, 0 },
{ "lv.cmp_ge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x3", EFI, 0 },
{ "lv.cmp_gt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x4", EFI, 0 },
{ "lv.cmp_gt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x5", EFI, 0 },
{ "lv.cmp_le.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x6", EFI, 0 },
{ "lv.cmp_le.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x7", EFI, 0 },
{ "lv.cmp_lt.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x8", EFI, 0 },
{ "lv.cmp_lt.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0x9", EFI, 0 },
{ "lv.cmp_ne.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xA", EFI, 0 },
{ "lv.cmp_ne.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x4 0xB", EFI, 0 },
{ "lv.madds.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x4", EFI, 0 },
{ "lv.max.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x5", EFI, 0 },
{ "lv.max.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x6", EFI, 0 },
{ "lv.merge.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x7", EFI, 0 },
{ "lv.merge.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x8", EFI, 0 },
{ "lv.min.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0x9", EFI, 0 },
{ "lv.min.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xA", EFI, 0 },
{ "lv.msubs.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xB", EFI, 0 },
{ "lv.muls.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xC", EFI, 0 },
{ "lv.nand", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xD", EFI, 0 },
{ "lv.nor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xE", EFI, 0 },
{ "lv.or", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x5 0xF", EFI, 0 },
{ "lv.pack.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x0", EFI, 0 },
{ "lv.pack.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x1", EFI, 0 },
{ "lv.packs.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x2", EFI, 0 },
{ "lv.packs.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x3", EFI, 0 },
{ "lv.packus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x4", EFI, 0 },
{ "lv.packus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x5", EFI, 0 },
{ "lv.perm.n", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x6", EFI, 0 },
{ "lv.rl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x7", EFI, 0 },
{ "lv.rl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x8", EFI, 0 },
{ "lv.sll.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0x9", EFI, 0 },
{ "lv.sll.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xA", EFI, 0 },
{ "lv.sll", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xB", EFI, 0 },
{ "lv.srl.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xC", EFI, 0 },
{ "lv.srl.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xD", EFI, 0 },
{ "lv.sra.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xE", EFI, 0 },
{ "lv.sra.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x6 0xF", EFI, 0 },
{ "lv.srl", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x0", EFI, 0 },
{ "lv.sub.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x1", EFI, 0 },
{ "lv.sub.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x2", EFI, 0 },
{ "lv.subs.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x3", EFI, 0 },
{ "lv.subs.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x4", EFI, 0 },
{ "lv.subu.b", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x5", EFI, 0 },
{ "lv.subu.h", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x6", EFI, 0 },
{ "lv.subus.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x7", EFI, 0 },
{ "lv.subus.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x8", EFI, 0 },
{ "lv.unpack.b","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0x9", EFI, 0 },
{ "lv.unpack.h","rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xA", EFI, 0 },
{ "lv.xor", "rD,rA,rB", "00 0xA DDDDD AAAAA BBBB B--- 0x7 0xB", EFI, 0 },
{ "lv.cust1", "", "00 0xA ----- ----- ---- ---- 0xC ----", EFI, 0 },
{ "lv.cust2", "", "00 0xA ----- ----- ---- ---- 0xD ----", EFI, 0 },
{ "lv.cust3", "", "00 0xA ----- ----- ---- ---- 0xE ----", EFI, 0 },
{ "lv.cust4", "", "00 0xA ----- ----- ---- ---- 0xF ----", EFI, 0 },
{ "lf.add.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
{ "lf.sub.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
{ "lf.mul.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
{ "lf.div.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
{ "lf.itof.s", "rD,rA", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
{ "lf.ftoi.s", "rD,rA", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
{ "lf.rem.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
{ "lf.madd.s", "rD,rA,rB", "00 0xB DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
{ "lf.sfeq.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
{ "lf.sfne.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
{ "lf.sfgt.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
{ "lf.sfge.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
{ "lf.sflt.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xC", EFI, 0 },
{ "lf.sfle.s", "rA,rB", "00 0xB ----- AAAAA BBBB B--- 0x1 0xD", EFI, 0 },
{ "lf.cust1.s", "", "00 0xB ----- ----- ---- ---- 0xE ----", EFI, 0 },
{ "lf.add.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
{ "lf.sub.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
{ "lf.mul.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x2", EFI, 0 },
{ "lf.div.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x3", EFI, 0 },
{ "lf.itof.d", "rD,rA", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x4", EFI, 0 },
{ "lf.ftoi.d", "rD,rA", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x5", EFI, 0 },
{ "lf.rem.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x6", EFI, 0 },
{ "lf.madd.d", "rD,rA,rB", "00 0xC DDDDD AAAAA BBBB B--- 0x1 0x7", EFI, 0 },
{ "lf.sfeq.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0x8", EFI, 0 },
{ "lf.sfne.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0x9", EFI, 0 },
{ "lf.sfgt.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xA", EFI, 0 },
{ "lf.sfge.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xB", EFI, 0 },
{ "lf.sflt.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xC", EFI, 0 },
{ "lf.sfle.d", "rA,rB", "00 0xC ----- AAAAA BBBB B--- 0x1 0xD", EFI, 0 },
{ "lf.cust1.d", "", "00 0xC ----- ----- ---- ---- 0xE ----", EFI, 0 },
{ "lvf.ld", "rD,0(rA)", "00 0xD DDDDD AAAAA ---- ---- 0x0 0x0", EFI, 0 },
{ "lvf.lw", "rD,0(rA)", "00 0xD DDDDD AAAAA ---- ---- 0x0 0x1", EFI, 0 },
{ "lvf.sd", "0(rA),rB", "00 0xD ----- AAAAA BBBB B--- 0x1 0x0", EFI, 0 },
{ "lvf.sw", "0(rA),rB", "00 0xD ----- AAAAA BBBB B--- 0x1 0x1", EFI, 0 },
{ "l.jr", "rB", "01 0x1 ----- ----- BBBB B--- ---- ----", EF(l_jr), OR32_IF_DELAY },
{ "l.jalr", "rB", "01 0x2 ----- ----- BBBB B--- ---- ----", EF(l_jalr), OR32_IF_DELAY },
{ "l.maci", "rB,I", "01 0x3 IIIII ----- BBBB BIII IIII IIII", EF(l_mac), 0 },
{ "l.cust1", "", "01 0xC ----- ----- ---- ---- ---- ----", EF(l_cust1), 0 },
{ "l.cust2", "", "01 0xD ----- ----- ---- ---- ---- ----", EF(l_cust2), 0 },
{ "l.cust3", "", "01 0xE ----- ----- ---- ---- ---- ----", EF(l_cust3), 0 },
{ "l.cust4", "", "01 0xF ----- ----- ---- ---- ---- ----", EF(l_cust4), 0 },
{ "l.ld", "rD,I(rA)", "10 0x0 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
{ "l.lwz", "rD,I(rA)", "10 0x1 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lwz), 0 },
{ "l.lws", "rD,I(rA)", "10 0x2 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
{ "l.lbz", "rD,I(rA)", "10 0x3 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbz), 0 },
{ "l.lbs", "rD,I(rA)", "10 0x4 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lbs), 0 },
{ "l.lhz", "rD,I(rA)", "10 0x5 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhz), 0 },
{ "l.lhs", "rD,I(rA)", "10 0x6 DDDDD AAAAA IIII IIII IIII IIII", EF(l_lhs), 0 },
{ "l.addi", "rD,rA,I", "10 0x7 DDDDD AAAAA IIII IIII IIII IIII", EF(l_add), 0 },
{ "l.addic", "rD,rA,I", "10 0x8 DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
{ "l.andi", "rD,rA,K", "10 0x9 DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_and), 0 },
{ "l.ori", "rD,rA,K", "10 0xA DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_or), 0 },
{ "l.xori", "rD,rA,I", "10 0xB DDDDD AAAAA IIII IIII IIII IIII", EF(l_xor), 0 },
{ "l.muli", "rD,rA,I", "10 0xC DDDDD AAAAA IIII IIII IIII IIII", EFI, 0 },
{ "l.mfspr", "rD,rA,K", "10 0xD DDDDD AAAAA KKKK KKKK KKKK KKKK", EF(l_mfspr), 0 },
{ "l.slli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 00LL LLLL", EF(l_sll), 0 },
{ "l.srli", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 01LL LLLL", EF(l_srl), 0 },
{ "l.srai", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 10LL LLLL", EF(l_sra), 0 },
{ "l.rori", "rD,rA,L", "10 0xE DDDDD AAAAA ---- ---- 11LL LLLL", EFI, 0 },
{ "l.sfeqi", "rA,I", "10 0xF 00000 AAAAA IIII IIII IIII IIII", EF(l_sfeq), OR32_W_FLAG },
{ "l.sfnei", "rA,I", "10 0xF 00001 AAAAA IIII IIII IIII IIII", EF(l_sfne), OR32_W_FLAG },
{ "l.sfgtui", "rA,I", "10 0xF 00010 AAAAA IIII IIII IIII IIII", EF(l_sfgtu), OR32_W_FLAG },
{ "l.sfgeui", "rA,I", "10 0xF 00011 AAAAA IIII IIII IIII IIII", EF(l_sfgeu), OR32_W_FLAG },
{ "l.sfltui", "rA,I", "10 0xF 00100 AAAAA IIII IIII IIII IIII", EF(l_sfltu), OR32_W_FLAG },
{ "l.sfleui", "rA,I", "10 0xF 00101 AAAAA IIII IIII IIII IIII", EF(l_sfleu), OR32_W_FLAG },
{ "l.sfgtsi", "rA,I", "10 0xF 01010 AAAAA IIII IIII IIII IIII", EF(l_sfgts), OR32_W_FLAG },
{ "l.sfgesi", "rA,I", "10 0xF 01011 AAAAA IIII IIII IIII IIII", EF(l_sfges), OR32_W_FLAG },
{ "l.sfltsi", "rA,I", "10 0xF 01100 AAAAA IIII IIII IIII IIII", EF(l_sflts), OR32_W_FLAG },
{ "l.sflesi", "rA,I", "10 0xF 01101 AAAAA IIII IIII IIII IIII", EF(l_sfles), OR32_W_FLAG },
{ "l.mtspr", "rA,rB,K", "11 0x0 KKKKK AAAAA BBBB BKKK KKKK KKKK", EF(l_mtspr), 0 },
{ "l.mac", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x1", EF(l_mac), 0 }, /*MM*/
{ "l.msb", "rA,rB", "11 0x1 ----- AAAAA BBBB B--- ---- 0x2", EF(l_msb), 0 }, /*MM*/
{ "l.sd", "I(rA),rB", "11 0x4 IIIII AAAAA BBBB BIII IIII IIII", EFI, 0 },
{ "l.sw", "I(rA),rB", "11 0x5 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sw), 0 },
{ "l.sb", "I(rA),rB", "11 0x6 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sb), 0 },
{ "l.sh", "I(rA),rB", "11 0x7 IIIII AAAAA BBBB BIII IIII IIII", EF(l_sh), 0 },
{ "l.add", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x0", EF(l_add), 0 },
{ "l.addc", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x1", EFI, 0 },
{ "l.sub", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x2", EF(l_sub), 0 },
{ "l.and", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x3", EF(l_and), 0 },
{ "l.or", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x4", EF(l_or), 0 },
{ "l.xor", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x5", EF(l_xor), 0 },
{ "l.mul", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0x6", EF(l_mul), 0 },
{ "l.sll", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0x8", EF(l_sll), 0 },
{ "l.srl", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0x8", EF(l_srl), 0 },
{ "l.sra", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 10-- 0x8", EF(l_sra), 0 },
{ "l.ror", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 11-- 0x8", EFI, 0 },
{ "l.div", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0x9", EF(l_div), 0 },
{ "l.divu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xA", EF(l_divu), 0 },
{ "l.mulu", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-11 ---- 0xB", EFI, 0 },
{ "l.exths", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0xC", EFI, 0 },
{ "l.extbs", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0xC", EFI, 0 },
{ "l.exthz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 10-- 0xC", EFI, 0 },
{ "l.extbz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 11-- 0xC", EFI, 0 },
{ "l.extws", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 00-- 0xD", EFI, 0 },
{ "l.extwz", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 01-- 0xD", EFI, 0 },
{ "l.cmov", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xE", EFI, 0 },
{ "l.ff1", "rD,rA,rB", "11 0x8 DDDDD AAAAA BBBB B-00 ---- 0xF", EFI, 0 },
{ "l.sfeq", "rA,rB", "11 0x9 00000 AAAAA BBBB B--- ---- ----", EF(l_sfeq), OR32_W_FLAG },
{ "l.sfne", "rA,rB", "11 0x9 00001 AAAAA BBBB B--- ---- ----", EF(l_sfne), OR32_W_FLAG },
{ "l.sfgtu", "rA,rB", "11 0x9 00010 AAAAA BBBB B--- ---- ----", EF(l_sfgtu), OR32_W_FLAG },
{ "l.sfgeu", "rA,rB", "11 0x9 00011 AAAAA BBBB B--- ---- ----", EF(l_sfgeu), OR32_W_FLAG },
{ "l.sfltu", "rA,rB", "11 0x9 00100 AAAAA BBBB B--- ---- ----", EF(l_sfltu), OR32_W_FLAG },
{ "l.sfleu", "rA,rB", "11 0x9 00101 AAAAA BBBB B--- ---- ----", EF(l_sfleu), OR32_W_FLAG },
{ "l.sfgts", "rA,rB", "11 0x9 01010 AAAAA BBBB B--- ---- ----", EF(l_sfgts), OR32_W_FLAG },
{ "l.sfges", "rA,rB", "11 0x9 01011 AAAAA BBBB B--- ---- ----", EF(l_sfges), OR32_W_FLAG },
{ "l.sflts", "rA,rB", "11 0x9 01100 AAAAA BBBB B--- ---- ----", EF(l_sflts), OR32_W_FLAG },
{ "l.sfles", "rA,rB", "11 0x9 01101 AAAAA BBBB B--- ---- ----", EF(l_sfles), OR32_W_FLAG },
{ "l.cust5", "", "11 0xC ----- ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust6", "", "11 0xD ----- ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust7", "", "11 0xE ----- ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust8", "", "11 0xF ----- ----- ---- ---- ---- ----", EFI, 0 },
/* This section should not be defined in or1ksim, since it contains duplicates,
which would cause machine builder to complain. */
#ifdef HAS_CUST
{ "l.cust5_1", "rD", "11 0xC DDDDD ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust5_2", "rD,rA" , "11 0xC DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
{ "l.cust5_3", "rD,rA,rB", "11 0xC DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
{ "l.cust6_1", "rD", "11 0xD DDDDD ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust6_2", "rD,rA" , "11 0xD DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
{ "l.cust6_3", "rD,rA,rB", "11 0xD DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
{ "l.cust7_1", "rD", "11 0xE DDDDD ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust7_2", "rD,rA" , "11 0xE DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
{ "l.cust7_3", "rD,rA,rB", "11 0xE DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
{ "l.cust8_1", "rD", "11 0xF DDDDD ----- ---- ---- ---- ----", EFI, 0 },
{ "l.cust8_2", "rD,rA" , "11 0xF DDDDD AAAAA ---- ---- ---- ----", EFI, 0 },
{ "l.cust8_3", "rD,rA,rB", "11 0xF DDDDD AAAAA BBBB B--- ---- ----", EFI, 0 },
#endif
/* Dummy entry, not included in num_opcodes. This
lets code examine entry i+1 without checking
if we've run off the end of the table. */
{ "", "", "", EFI, 0 }
};
#undef EFI
#undef EFN
#undef EF
/* Define dummy, if debug is not defined. */
#if !defined HAS_DEBUG
static void ATTRIBUTE_PRINTF_2
debug (int level ATTRIBUTE_UNUSED, const char *format ATTRIBUTE_UNUSED, ...)
{
}
#endif
const unsigned int or32_num_opcodes = ((sizeof(or32_opcodes)) / (sizeof(struct or32_opcode))) - 1;
/* Calculates instruction length in bytes. Always 4 for OR32. */
int
insn_len (int insn_index ATTRIBUTE_UNUSED)
{
return 4;
}
/* Is individual insn's operand signed or unsigned? */
int
letter_signed (char l)
{
const struct or32_letter *pletter;
for (pletter = or32_letters; pletter->letter != '\0'; pletter++)
if (pletter->letter == l)
return pletter->sign;
printf ("letter_signed(%c): Unknown letter.\n", l);
return 0;
}
/* Number of letters in the individual lettered operand. */
int
letter_range (char l)
{
const struct or32_opcode *pinsn;
char *enc;
int range = 0;
for (pinsn = or32_opcodes; strlen (pinsn->name); pinsn ++)
{
if (strchr (pinsn->encoding,l))
{
for (enc = pinsn->encoding; *enc != '\0'; enc ++)
if ((*enc == '0') && (*(enc + 1) == 'x'))
enc += 2;
else if (*enc == l)
range++;
return range;
}
}
printf ("\nABORT: letter_range(%c): Never used letter.\n", l);
exit (1);
}
/* MM: Returns index of given instruction name. */
int
insn_index (char *insn)
{
unsigned int i;
int found = -1;
for (i = 0; i < or32_num_opcodes; i++)
if (!strcmp (or32_opcodes[i].name, insn))
{
found = i;
break;
}
return found;
}
const char *
insn_name (int index)
{
if (index >= 0 && index < (int) or32_num_opcodes)
return or32_opcodes[index].name;
else
return "???";
}
void
l_none (void)
{
}
/* Finite automata for instruction decoding building code. */
/* Find simbols in encoding. */
static unsigned long
insn_extract (char param_ch, char *enc_initial)
{
char *enc;
unsigned long ret = 0;
unsigned opc_pos = 32;
for (enc = enc_initial; *enc != '\0'; )
if ((*enc == '0') && (*(enc + 1) == 'x'))
{
unsigned long tmp = strtol (enc+2, NULL, 16);
opc_pos -= 4;
if (param_ch == '0' || param_ch == '1')
{
if (param_ch == '0')
tmp = 15 - tmp;
ret |= tmp << opc_pos;
}
enc += 3;
}
else
{
if (*enc == '0' || *enc == '1' || *enc == '-' || ISALPHA (*enc))
{
opc_pos--;
if (param_ch == *enc)
ret |= 1 << opc_pos;
}
enc++;
}
return ret;
}
#define MAX_AUTOMATA_SIZE 1200
#define MAX_OP_TABLE_SIZE 1200
#define LEAF_FLAG 0x80000000
#define MAX_LEN 8
#ifndef MIN
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#endif
unsigned long *automata;
int nuncovered;
int curpass = 0;
/* MM: Struct that hold runtime build information about instructions. */
struct temp_insn_struct
{
unsigned long insn;
unsigned long insn_mask;
int in_pass;
} *ti;
struct insn_op_struct *op_data, **op_start;
/* Recursive utility function used to find best match and to build automata. */
static unsigned long *
cover_insn (unsigned long * cur, int pass, unsigned int mask)
{
int best_first = 0, last_match = -1, ninstr = 0;
unsigned int best_len = 0;
unsigned int i;
unsigned long cur_mask = mask;
unsigned long *next;
for (i = 0; i < or32_num_opcodes; i++)
if (ti[i].in_pass == pass)
{
cur_mask &= ti[i].insn_mask;
ninstr++;
last_match = i;
}
debug (8, "%08X %08lX\n", mask, cur_mask);
if (ninstr == 0)
return 0;
if (ninstr == 1)
{
/* Leaf holds instruction index. */
debug (8, "%li>I%i %s\n",
(long)(cur - automata), last_match, or32_opcodes[last_match].name);
*cur = LEAF_FLAG | last_match;
cur++;
nuncovered--;
}
else
{
/* Find longest match. */
for (i = 0; i < 32; i++)
{
unsigned int len;
for (len = best_len + 1; len < MIN (MAX_LEN, 33 - i); len++)
{
unsigned long m = (1UL << ((unsigned long) len)) - 1;
debug (9, " (%i(%08lX & %08lX>>%i = %08lX, %08lX)",
len,m, cur_mask, i, (cur_mask >> (unsigned)i),
(cur_mask >> (unsigned) i) & m);
if ((m & (cur_mask >> (unsigned) i)) == m)
{
best_len = len;
best_first = i;
debug (9, "!");
}
else
break;
}
}
debug (9, "\n");
if (!best_len)
{
fprintf (stderr, "%i instructions match mask 0x%08X:\n", ninstr, mask);
for (i = 0; i < or32_num_opcodes; i++)
if (ti[i].in_pass == pass)
fprintf (stderr, "%s ", or32_opcodes[i].name);
fprintf (stderr, "\n");
exit (1);
}
debug (8, "%li> #### %i << %i (%i) ####\n",
(long)(cur - automata), best_len, best_first, ninstr);
*cur = best_first;
cur++;
*cur = (1 << best_len) - 1;
cur++;
next = cur;
/* Allocate space for pointers. */
cur += 1 << best_len;
cur_mask = (1 << (unsigned long) best_len) - 1;
for (i = 0; i < ((unsigned) 1 << best_len); i++)
{
unsigned int j;
unsigned long *c;
curpass++;
for (j = 0; j < or32_num_opcodes; j++)
if (ti[j].in_pass == pass
&& ((ti[j].insn >> best_first) & cur_mask) == (unsigned long) i
&& ((ti[j].insn_mask >> best_first) & cur_mask) == cur_mask)
ti[j].in_pass = curpass;
debug (9, "%08X %08lX %i\n", mask, cur_mask, best_first);
c = cover_insn (cur, curpass, mask & (~(cur_mask << best_first)));
if (c)
{
debug (8, "%li> #%X -> %lu\n", (long)(next - automata), i, (long)(cur - automata));
*next = cur - automata;
cur = c;
}
else
{
debug (8, "%li> N/A\n", (long)(next - automata));
*next = 0;
}
next++;
}
}
return cur;
}
/* Returns number of nonzero bits. */
static int
num_ones (unsigned long value)
{
int c = 0;
while (value)
{
if (value & 1)
c++;
value >>= 1;
}
return c;
}
/* Utility function, which converts parameters from or32_opcode
format to more binary form. Parameters are stored in ti struct. */
static struct insn_op_struct *
parse_params (const struct or32_opcode * opcode,
struct insn_op_struct * cur)
{
char *args = opcode->args;
int i, type;
i = 0;
type = 0;
/* In case we don't have any parameters, we add dummy read from r0. */
if (!(*args))
{
cur->type = OPTYPE_REG | OPTYPE_OP | OPTYPE_LAST;
cur->data = 0;
debug (9, "#%08lX %08lX\n", cur->type, cur->data);
cur++;
return cur;
}
while (*args != '\0')
{
if (*args == 'r')
{
args++;
type |= OPTYPE_REG;
}
else if (ISALPHA (*args))
{
unsigned long arg;
arg = insn_extract (*args, opcode->encoding);
debug (9, "%s : %08lX ------\n", opcode->name, arg);
if (letter_signed (*args))
{
type |= OPTYPE_SIG;
type |= ((num_ones (arg) - 1) << OPTYPE_SBIT_SHR) & OPTYPE_SBIT;
}
/* Split argument to sequences of consecutive ones. */
while (arg)
{
int shr = 0;
unsigned long tmp = arg, mask = 0;
while ((tmp & 1) == 0)
{
shr++;
tmp >>= 1;
}
while (tmp & 1)
{
mask++;
tmp >>= 1;
}
cur->type = type | shr;
cur->data = mask;
arg &= ~(((1 << mask) - 1) << shr);
debug (6, "|%08lX %08lX\n", cur->type, cur->data);
cur++;
}
args++;
}
else if (*args == '(')
{
/* Next param is displacement.
Later we will treat them as one operand. */
cur--;
cur->type = type | cur->type | OPTYPE_DIS | OPTYPE_OP;
debug (9, ">%08lX %08lX\n", cur->type, cur->data);
cur++;
type = 0;
i++;
args++;
}
else if (*args == OPERAND_DELIM)
{
cur--;
cur->type = type | cur->type | OPTYPE_OP;
debug (9, ">%08lX %08lX\n", cur->type, cur->data);
cur++;
type = 0;
i++;
args++;
}
else if (*args == '0')
{
cur->type = type;
cur->data = 0;
debug (9, ">%08lX %08lX\n", cur->type, cur->data);
cur++;
type = 0;
i++;
args++;
}
else if (*args == ')')
args++;
else
{
fprintf (stderr, "%s : parse error in args.\n", opcode->name);
exit (1);
}
}
cur--;
cur->type = type | cur->type | OPTYPE_OP | OPTYPE_LAST;
debug (9, "#%08lX %08lX\n", cur->type, cur->data);
cur++;
return cur;
}
/* Constructs new automata based on or32_opcodes array. */
void
build_automata (void)
{
unsigned int i;
unsigned long *end;
struct insn_op_struct *cur;
automata = malloc (MAX_AUTOMATA_SIZE * sizeof (unsigned long));
ti = malloc (sizeof (struct temp_insn_struct) * or32_num_opcodes);
nuncovered = or32_num_opcodes;
printf ("Building automata... ");
/* Build temporary information about instructions. */
for (i = 0; i < or32_num_opcodes; i++)
{
unsigned long ones, zeros;
char *encoding = or32_opcodes[i].encoding;
ones = insn_extract('1', encoding);
zeros = insn_extract('0', encoding);
ti[i].insn_mask = ones | zeros;
ti[i].insn = ones;
ti[i].in_pass = curpass = 0;
/*debug(9, "%s: %s %08X %08X\n", or32_opcodes[i].name,
or32_opcodes[i].encoding, ti[i].insn_mask, ti[i].insn);*/
}
/* Until all are covered search for best criteria to separate them. */
end = cover_insn (automata, curpass, 0xFFFFFFFF);
if (end - automata > MAX_AUTOMATA_SIZE)
{
fprintf (stderr, "Automata too large. Increase MAX_AUTOMATA_SIZE.");
exit (1);
}
printf ("done, num uncovered: %i/%i.\n", nuncovered, or32_num_opcodes);
printf ("Parsing operands data... ");
op_data = malloc (MAX_OP_TABLE_SIZE * sizeof (struct insn_op_struct));
op_start = malloc (or32_num_opcodes * sizeof (struct insn_op_struct *));
cur = op_data;
for (i = 0; i < or32_num_opcodes; i++)
{
op_start[i] = cur;
cur = parse_params (&or32_opcodes[i], cur);
if (cur - op_data > MAX_OP_TABLE_SIZE)
{
fprintf (stderr, "Operands table too small, increase MAX_OP_TABLE_SIZE.\n");
exit (1);
}
}
printf ("done.\n");
}
void
destruct_automata (void)
{
free (ti);
free (automata);
free (op_data);
free (op_start);
}
/* Decodes instruction and returns instruction index. */
int
insn_decode (unsigned int insn)
{
unsigned long *a = automata;
int i;
while (!(*a & LEAF_FLAG))
{
unsigned int first = *a;
debug (9, "%li ", (long)(a - automata));
a++;
i = (insn >> first) & *a;
a++;
if (!*(a + i))
{
/* Invalid instruction found? */
debug (9, "XXX\n");
return -1;
}
a = automata + *(a + i);
}
i = *a & ~LEAF_FLAG;
debug (9, "%i\n", i);
/* Final check - do we have direct match?
(based on or32_opcodes this should be the only possibility,
but in case of invalid/missing instruction we must perform a check) */
if ((ti[i].insn_mask & insn) == ti[i].insn)
return i;
else
return -1;
}
static char disassembled_str[50];
char *disassembled = &disassembled_str[0];
/* Automagically does zero- or sign- extension and also finds correct
sign bit position if sign extension is correct extension. Which extension
is proper is figured out from letter description. */
static unsigned long
extend_imm (unsigned long imm, char l)
{
unsigned long mask;
int letter_bits;
/* First truncate all bits above valid range for this letter
in case it is zero extend. */
letter_bits = letter_range (l);
mask = (1 << letter_bits) - 1;
imm &= mask;
/* Do sign extend if this is the right one. */
if (letter_signed(l) && (imm >> (letter_bits - 1)))
imm |= (~mask);
return imm;
}
static unsigned long
or32_extract (char param_ch, char *enc_initial, unsigned long insn)
{
char *enc;
unsigned long ret = 0;
int opc_pos = 0;
int param_pos = 0;
for (enc = enc_initial; *enc != '\0'; enc++)
if (*enc == param_ch)
{
if (enc - 2 >= enc_initial && (*(enc - 2) == '0') && (*(enc - 1) == 'x'))
continue;
else
param_pos++;
}
#if DEBUG
printf ("or32_extract: %x ", param_pos);
#endif
opc_pos = 32;
for (enc = enc_initial; *enc != '\0'; )
if ((*enc == '0') && (*(enc + 1) == 'x'))
{
opc_pos -= 4;
if ((param_ch == '0') || (param_ch == '1'))
{
unsigned long tmp = strtol (enc, NULL, 16);
#if DEBUG
printf (" enc=%s, tmp=%x ", enc, tmp);
#endif
if (param_ch == '0')
tmp = 15 - tmp;
ret |= tmp << opc_pos;
}
enc += 3;
}
else if ((*enc == '0') || (*enc == '1'))
{
opc_pos--;
if (param_ch == *enc)
ret |= 1 << opc_pos;
enc++;
}
else if (*enc == param_ch)
{
opc_pos--;
param_pos--;
#if DEBUG
printf ("\n ret=%x opc_pos=%x, param_pos=%x\n", ret, opc_pos, param_pos);
#endif
if (ISLOWER (param_ch))
ret -= ((insn >> opc_pos) & 0x1) << param_pos;
else
ret += ((insn >> opc_pos) & 0x1) << param_pos;
enc++;
}
else if (ISALPHA (*enc))
{
opc_pos--;
enc++;
}
else if (*enc == '-')
{
opc_pos--;
enc++;
}
else
enc++;
#if DEBUG
printf ("ret=%x\n", ret);
#endif
return ret;
}
/* Print register. Used only by print_insn. */
static void
or32_print_register (char param_ch, char *encoding, unsigned long insn)
{
int regnum = or32_extract(param_ch, encoding, insn);
sprintf (disassembled, "%sr%d", disassembled, regnum);
}
/* Print immediate. Used only by print_insn. */
static void
or32_print_immediate (char param_ch, char *encoding, unsigned long insn)
{
int imm = or32_extract (param_ch, encoding, insn);
imm = extend_imm (imm, param_ch);
if (letter_signed (param_ch))
{
if (imm < 0)
sprintf (disassembled, "%s%d", disassembled, imm);
else
sprintf (disassembled, "%s0x%x", disassembled, imm);
}
else
sprintf (disassembled, "%s%#x", disassembled, imm);
}
/* Disassemble one instruction from insn to disassemble.
Return the size of the instruction. */
int
disassemble_insn (unsigned long insn)
{
int index;
index = insn_decode (insn);
if (index >= 0)
{
struct or32_opcode const *opcode = &or32_opcodes[index];
char *s;
sprintf (disassembled, "%s ", opcode->name);
for (s = opcode->args; *s != '\0'; ++s)
{
switch (*s)
{
case '\0':
return 4;
case 'r':
or32_print_register (*++s, opcode->encoding, insn);
break;
default:
if (strchr (opcode->encoding, *s))
or32_print_immediate (*s, opcode->encoding, insn);
else
sprintf (disassembled, "%s%c", disassembled, *s);
}
}
}
else
{
/* This used to be %8x for binutils. */
sprintf (disassembled, "%s.word 0x%08lx", disassembled, insn);
}
return insn_len (insn);
}
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