554 lines
14 KiB
C++
554 lines
14 KiB
C++
/*
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* Interactive disassembler (IDA).
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* Copyright (c) 1990-99 by Ilfak Guilfanov.
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* ALL RIGHTS RESERVED.
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* E-mail: ig@datarescue.com
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*
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*
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*/
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#include <ctype.h>
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#include "f2mc.hpp"
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#include <diskio.hpp>
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#include <segregs.hpp>
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int data_id;
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static const proctype_t ptypes[] =
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{
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F2MC16L,
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F2MC16LX
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};
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//--------------------------------------------------------------------------
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static const char *const register_names[] =
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{
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"A", // accumulator
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"AL", // accumulator
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"AH", // accumulator
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"PC", // program counter
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"SP", // stack pointer
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"R0",
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"R1",
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"R2",
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"R3",
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"R4",
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"R5",
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"R6",
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"R7",
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"RW0",
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"RW1",
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"RW2",
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"RW3",
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"RW4",
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"RW5",
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"RW6",
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"RW7",
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"RL0",
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"RL1",
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"RL2",
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"RL3",
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"PCB", // program bank register
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"DTB", // data bank register
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"ADB", // additional data bank register
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"SSB", // system stack bank register
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"USB", // user stack bank register
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"CCR", // condition code register
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"DPR", // direct page register
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"cs","ds", // virtual registers for code and data segments
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"SPB", // stack pointer bank register
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"PS", // processor status
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"ILM", // interrupt level mask register
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"RP" // register bank pointer
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};
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//--------------------------------------------------------------------------
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static const uchar retcode_0[] = { 0x66 }; // retp
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static const uchar retcode_1[] = { 0x67 }; // ret
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static const uchar retcode_2[] = { 0x6B }; // reti
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static const bytes_t retcodes[] =
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{
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{ sizeof(retcode_0), retcode_0 },
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{ sizeof(retcode_1), retcode_1 },
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{ sizeof(retcode_2), retcode_2 },
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{ 0, NULL }
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};
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//-----------------------------------------------------------------------
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// Fujitsu FASM
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//-----------------------------------------------------------------------
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static const asm_t fasm =
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{
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AS_N2CHR|AS_NCMAS|ASH_HEXF3|ASD_DECF0|ASO_OCTF1|ASB_BINF3|AS_ONEDUP,
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0,
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"Fujitsu FASM",
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0,
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NULL, // header lines
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".org", // org
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".end", // end
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";", // comment string
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'"', // string delimiter
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'\'', // char delimiter
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"'\"", // special symbols in char and string constants
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".ascii", // ascii string directive
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".data.b", // byte directive
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".data.w", // word directive
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".data.l", // double words
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NULL, // qwords
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NULL, // oword (16 bytes)
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NULL, // float (4 bytes)
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NULL, // double (8 bytes)
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NULL, // tbyte (10/12 bytes)
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NULL, // packed decimal real
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NULL, // arrays (#h,#d,#v,#s(...)
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".res.b %s", // uninited arrays
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".equ", // equ
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NULL, // 'seg' prefix (example: push seg seg001)
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"$", // current IP (instruction pointer)
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NULL, // func_header
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NULL, // func_footer
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NULL, // "public" name keyword
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NULL, // "weak" name keyword
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NULL, // "extrn" name keyword
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NULL, // "comm" (communal variable)
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NULL, // get_type_name
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".align", // "align" keyword
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'(', ')', // lbrace, rbrace
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"%", // mod
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"&", // and
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"|", // or
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"^", // xor
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"~", // not
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"<<", // shl
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">>", // shr
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NULL, // sizeof
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};
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static const asm_t *const asms[] = { &fasm, NULL };
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//--------------------------------------------------------------------------
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bool f2mc_iohandler_t::area_processing(ea_t start, ea_t end, const char *name, const char *aclass)
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{
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const bool split = end > start && (end - start) > 0x10000;
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for ( ea_t chunk_ea = start; chunk_ea < end; chunk_ea += 0x10000 )
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{
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ea_t segbase = (chunk_ea >> 16) << 12;
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sel_t sel = allocate_selector(segbase);
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qstring nm(name);
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if ( split )
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nm.cat_sprnt("_%02X", uint32((chunk_ea >> 16) & 0xFF));
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ea_t chunk_end = chunk_ea + 0x10000;
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if ( chunk_end > end )
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chunk_end = end;
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add_segm(sel, chunk_ea, chunk_end, nm.c_str(), aclass);
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}
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return true;
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}
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//-------------------------------------------------------------------------
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const char *f2mc_iohandler_t::iocallback(const ioports_t &iop, const char *line)
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{
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const char *ret = NULL;
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bool handled = false;
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int len;
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ea_t ea1;
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char word[MAXSTR];
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word[MAXSTR-1] = '\0';
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CASSERT(MAXSTR == 1024);
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if ( qsscanf(line, "interrupt %1023s %" FMT_EA "i%n", word, &ea1, &len) == 2 ) //lint !e706 nominally inconsistent format
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{
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if ( (respect_info & IORESP_INT) != 0 )
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{
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segment_t *s = getseg(ea1);
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ea_t proc;
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if ( s != NULL )
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{
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create_dword(ea1, 4);
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proc = get_dword(ea1);
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if ( proc != 0xFFFFFFFF )
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{
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op_plain_offset(ea1, 0, 0);
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add_entry(proc, proc, word, true);
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const char *ptr = &line[len];
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ptr = skip_spaces(ptr);
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if ( ptr[0] != '\0' )
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set_cmt(ea1, ptr, true);
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handled = true;
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}
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}
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}
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}
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if ( !handled )
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ret = standard_callback(iop, line);
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return ret;
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}
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//-------------------------------------------------------------------------
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void f2mc_t::load_symbols(int _respect_info)
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{
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if ( cfgname != NULL )
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{
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ioh.deviceparams.qclear();
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ioh.respect_info = _respect_info;
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if ( !inf_like_binary() )
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ioh.respect_info &= ~2;
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ioh.ports.clear();
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iohandler_t::ioports_loader_t ldr(&ioh);
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read_ioports2(&ioh.ports, &ioh.device, cfgname, &ldr);
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if ( ioh.respect_info )
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{
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for ( int i=0; i < ioh.ports.size(); i++ )
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{
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ea_t ea = ioh.ports[i].address;
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create_byte(ea, 1);
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const char *name = ioh.ports[i].name.c_str();
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if ( !set_name(ea, name, SN_NOCHECK|SN_NOWARN|SN_NODUMMY) )
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set_cmt(ea, name, 0);
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else
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set_cmt(ea, ioh.ports[i].cmt.c_str(), true);
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}
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}
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}
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}
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const char *f2mc_t::find_sym(ea_t address)
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{
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const ioport_t *port = find_ioport(ioh.ports, address);
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return port ? port->name.c_str() : NULL;
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}
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const char *f2mc_t::find_bit(ea_t address, int bit)
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{
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const ioport_bit_t *b = find_ioport_bit(ioh.ports, address, bit);
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return b ? b->name.c_str() : NULL;
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}
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//--------------------------------------------------------------------------
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void f2mc_t::f2mc_set_device_name(int _respect_info)
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{
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helper.supset(-1, ioh.device.c_str());
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load_symbols(_respect_info);
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}
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//-------------------------------------------------------------------------
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void f2mc_t::choose_and_set_device(int flags)
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{
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iohandler_t::parse_area_line0_t cb(ioh);
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if ( choose_ioport_device2(&ioh.device, cfgname, &cb) )
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f2mc_set_device_name(flags);
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}
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//--------------------------------------------------------------------------
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inline void f2mc_t::choose_device()
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{
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choose_and_set_device(IORESP_PORT|IORESP_INT);
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}
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//--------------------------------------------------------------------------
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static int idaapi choose_device_cb(int, form_actions_t &fa)
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{
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f2mc_t &pm = *(f2mc_t *)fa.get_ud();
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pm.choose_device();
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return 0;
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}
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//--------------------------------------------------------------------------
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const char *f2mc_t::set_idp_options(
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const char *keyword,
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int value_type,
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const void * value,
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bool idb_loaded)
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{
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if ( keyword == NULL )
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{
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static const char form[] =
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"HELP\n"
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"F2MC specific options\n"
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"\n"
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" Use macro instructions\n"
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"\n"
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" If this option is on, IDA will try to combine several instructions\n"
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" into a macro instruction\n"
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" For example,\n"
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"\n"
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" sbbs data:7, $1\n"
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" bra $2\n"
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" $1:\n"
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" jmp LABEL\n"
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" $2:\n"
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"\n"
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" will be replaced by\n"
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"\n"
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" sbbs16 data:7, LABEL\n"
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"\n"
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"ENDHELP\n"
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"F2MC specific options\n"
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"%*\n"
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" <Use ~m~acro instructions:C>>\n"
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"\n"
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" <~C~hoose device name:B:0::>\n"
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"\n"
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"\n";
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CASSERT(sizeof(idpflags) == sizeof(ushort));
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ask_form(form, this, &idpflags, choose_device_cb);
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OK:
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if ( idb_loaded )
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save_idpflags();
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return IDPOPT_OK;
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}
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else
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{
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if ( value_type != IDPOPT_BIT )
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return IDPOPT_BADTYPE;
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if ( streq(keyword, "F2MC_MACRO") )
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{
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setflag(idpflags, F2MC_MACRO, *(int*)value != 0);
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goto OK;
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}
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return IDPOPT_BADKEY;
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}
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}
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//----------------------------------------------------------------------
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void f2mc_t::load_from_idb()
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{
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idpflags = (ushort)helper.altval(-1);
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ioh.restore_device();
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}
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//----------------------------------------------------------------------
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// This old-style callback only returns the processor module object.
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static ssize_t idaapi notify(void *, int msgid, va_list)
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{
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if ( msgid == processor_t::ev_get_procmod )
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return size_t(SET_MODULE_DATA(f2mc_t));
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return 0;
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}
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//--------------------------------------------------------------------------
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ssize_t idaapi f2mc_t::on_event(ssize_t msgid, va_list va)
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{
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switch ( msgid )
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{
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case processor_t::ev_init:
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helper.create(PROCMOD_NODE_NAME);
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inf_set_wide_high_byte_first(true);
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break;
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case processor_t::ev_term:
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ioh.ports.clear();
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clr_module_data(data_id);
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break;
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case processor_t::ev_newfile: // new file loaded
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set_segm_name(get_first_seg(), "CODE");
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choose_and_set_device(IORESP_ALL);
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for ( int i = DTB; i <= rVds; i++ )
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{
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for ( segment_t *s=get_first_seg(); s != NULL; s=get_next_seg(s->start_ea) )
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set_default_sreg_value(s, i, 0);
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}
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save_idpflags();
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break;
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case processor_t::ev_ending_undo:
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// restore ptype
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ptype = ptypes[ph.get_proc_index()];
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//fall through
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case processor_t::ev_oldfile: // old file loaded
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ioh.upgrade_device_index();
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load_from_idb();
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break;
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case processor_t::ev_newprc: // new processor type
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{
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ptype = ptypes[va_arg(va, int)];
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// bool keep_cfg = va_argi(va, bool);
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switch ( ptype )
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{
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case F2MC16L:
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cfgname = "f2mc16l.cfg";
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break;
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case F2MC16LX:
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cfgname = "f2mc16lx.cfg";
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break;
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default:
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error("interr: setprc");
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}
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ioh.device.qclear();
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if ( get_first_seg() != NULL )
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choose_device();
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}
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break;
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case processor_t::ev_out_header:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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f2mc_header(*ctx);
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return 1;
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}
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case processor_t::ev_out_footer:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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f2mc_footer(*ctx);
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return 1;
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}
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case processor_t::ev_out_segstart:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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segment_t *seg = va_arg(va, segment_t *);
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f2mc_segstart(*ctx, seg);
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return 1;
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}
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case processor_t::ev_out_segend:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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segment_t *seg = va_arg(va, segment_t *);
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f2mc_segend(*ctx, seg);
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return 1;
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}
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case processor_t::ev_out_assumes:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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f2mc_assumes(*ctx);
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return 1;
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}
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case processor_t::ev_ana_insn:
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{
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insn_t *out = va_arg(va, insn_t *);
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return ana(out);
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}
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case processor_t::ev_emu_insn:
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{
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const insn_t *insn = va_arg(va, const insn_t *);
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return emu(*insn) ? 1 : -1;
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}
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case processor_t::ev_out_insn:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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out_insn(*ctx);
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return 1;
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}
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case processor_t::ev_out_operand:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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const op_t *op = va_arg(va, const op_t *);
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return out_opnd(*ctx, *op) ? 1 : -1;
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}
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case processor_t::ev_is_sp_based:
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{
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int *mode = va_arg(va, int *);
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const insn_t *insn = va_arg(va, const insn_t *);
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const op_t *op = va_arg(va, const op_t *);
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*mode = is_sp_based(*insn, *op);
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return 1;
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}
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case processor_t::ev_create_func_frame:
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{
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func_t *pfn = va_arg(va, func_t *);
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create_func_frame(pfn);
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return 1;
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}
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case processor_t::ev_set_idp_options:
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{
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const char *keyword = va_arg(va, const char *);
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int value_type = va_arg(va, int);
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const char *value = va_arg(va, const char *);
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const char **errmsg = va_arg(va, const char **);
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bool idb_loaded = va_argi(va, bool);
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const char *ret = set_idp_options(keyword, value_type, value, idb_loaded);
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if ( ret == IDPOPT_OK )
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return 1;
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if ( errmsg != NULL )
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*errmsg = ret;
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return -1;
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}
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default:
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break;
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}
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return 0;
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}
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//-----------------------------------------------------------------------
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#define FAMILY "Fujitsu F2MC:"
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static const char *const shnames[] =
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{ "F2MC16L",
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"F2MC16LX",
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NULL
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};
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static const char *const lnames[] =
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{ FAMILY"Fujitsu F2MC 16L",
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"Fujitsu F2MC 16LX",
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NULL
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};
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//-----------------------------------------------------------------------
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// Processor Definition
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//-----------------------------------------------------------------------
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processor_t LPH =
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{
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IDP_INTERFACE_VERSION, // version
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PLFM_F2MC, // id
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// flag
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PRN_HEX
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| PR_SEGS
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| PR_SGROTHER,
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// flag2
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PR2_IDP_OPTS, // the module has processor-specific configuration options
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8, // 8 bits in a byte for code segments
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8, // 8 bits in a byte for other segments
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shnames,
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lnames,
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asms,
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notify,
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register_names, // Register names
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qnumber(register_names), // Number of registers
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DTB, // first. We don't start at PCB, because
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// PCB == cs, and the way to get addresses
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// right is not to modify PCB, but rather
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// create the segmentation correctly.
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rVds, // last
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1, // size of a segment register
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rVcs, rVds,
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NULL, // No known code start sequences
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retcodes,
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F2MC_null,
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F2MC_last,
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Instructions, // instruc
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0, // int tbyte_size; -- doesn't exist
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{ 0, 0, 0, 0 }, // char real_width[4];
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// number of symbols after decimal point
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// 2byte float (0-does not exist)
|
|
// normal float
|
|
// normal double
|
|
// long double
|
|
F2MC_ret, // Icode of return instruction. It is ok to give any of possible return instructions
|
|
};
|