static void TouchArg( op_t &x, int isload )
{
switch( x.type )
{
case o_imm:
case o_displ:
if ( isOff(uFlag, x.n) ) ua_add_off_drefs(x, dr_O);
break;
case o_mem:
case o_ind_mem:
{
ulong dea = intmem + x.addr;
ua_dodata( dea, x.dtyp );
if( !isload ) doVar( dea );
ua_add_dref( x.offb, dea, isload ? dr_R : dr_W );
}
break;
case o_near:
ulong ea = toEA( cmd.cs, x.addr );
int iscall = InstrIsSet( cmd.itype, CF_CALL );
ua_add_cref( x.offb, ea, iscall ? fl_CN : fl_JN );
if( flow && iscall )
{
if ( !func_does_return(ea) )
flow = false;
}
}
}
static void TouchArg( op_t &x, int isload )
{
switch( x.type )
{
case o_displ:
case o_imm:
if ( isOff(uFlag, x.n) )
{
int outf = x.type != o_imm ? OOF_ADDR : 0;
ua_add_off_drefs2(x, dr_O, outf|OOF_SIGNED);
}
break;
case o_mem:
case o_ind_mem:
{
ea_t dea = intmem + x.addr;
ua_dodata2(x.offb, dea, x.dtyp);
if( !isload )
doVar( dea );
ua_add_dref( x.offb, dea, isload ? dr_R : dr_W );
}
break;
case o_near:
ea_t ea = toEA( cmd.cs, x.addr );
int iscall = InstrIsSet( cmd.itype, CF_CALL );
ua_add_cref( x.offb, ea, iscall ? fl_CN : fl_JN );
if( flow && iscall )
{
if ( !func_does_return(ea) )
flow = false;
}
}
}
//----------------------------------------------------------------------
static void process_operand(op_t &x, bool isload)
{
ea_t ea;
dref_t dref;
if ( is_forced_operand(cmd.ea, x.n) ) return;
switch ( x.type )
{
case o_reg:
case o_phrase:
break;
case o_imm:
if ( !isload ) interr("emu1");
process_immediate_number(x.n);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, OOFS_IFSIGN|OOFW_IMM);
break;
case o_mem:
ea = calc_mem(x.addr);
ua_dodata2(x.offb, ea, x.dtyp);
dref = cmd.itype == I960_lda ? dr_O : isload ? dr_R : dr_W;
ua_add_dref(x.offb, ea, dref);
break;
case o_near:
{
cref_t ftype = fl_JN;
ea = calc_mem(x.addr);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
flow = func_does_return(ea);
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
break;
case o_displ:
dref = cmd.itype == I960_lda ? dr_O : isload ? dr_R : dr_W;
process_immediate_number(x.n);
if ( x.reg == IP )
{
ea_t ea = cmd.ea + 8 + x.addr;
ua_add_dref(x.offb, ea, dref);
}
else
{
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dref, OOFS_IFSIGN|OOF_SIGNED|OOF_ADDR|OOFW_32);
}
break;
default:
interr("emu");
}
}
//----------------------------------------------------------------------
static void add_code_xref(op_t &x, ea_t ea)
{
cref_t ftype = fl_JN;
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
//----------------------------------------------------------------------
static void TouchArg( op_t &x, int isload )
{
switch( x.type )
{
case o_imm:
doImmd(cmd.ea);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, OOF_SIGNED);
break;
case o_indexed: // addr[value]
doImmd(cmd.ea);
if ( x.value == 0 && !isDefArg(uFlag, x.n) )
set_offset(cmd.ea, x.n, toEA(cmd.cs, 0));
if ( isOff(uFlag, x.n) ) // xref to addr
{
uval_t saved = x.value;
x.value = x.addr;
ua_add_off_drefs2(x, saved ? dr_O : isload ? dr_R : dr_W, OOF_SIGNED|OOF_ADDR);
x.value = saved;
}
if ( x.value != 0 ) // xref to value
{ // no references to ZERO_REG
ea_t ea = toEA(cmd.cs, x.value);
ua_add_dref(x.offb, ea, isload ? dr_R : dr_W );
ua_dodata2(x.offb, ea, x.dtyp);
}
break;
case o_indirect:
case o_indirect_inc:
case o_mem:
{
ea_t dea = toEA( cmd.cs, x.addr );
ua_dodata2(x.offb, dea, x.dtyp);
if( !isload )
doVar(dea);
ua_add_dref( x.offb, dea, isload ? dr_R : dr_W );
if ( !isload && (x.addr == 0x14 || x.addr == 0x15) )
{
sel_t wsrval = BADSEL;
if ( cmd.Op2.type == o_imm ) wsrval = sel_t(cmd.Op2.value);
splitSRarea1(cmd.ea, x.addr == 0x14 ? WSR : WSR1, wsrval, SR_auto);
}
}
break;
case o_near:
ea_t ea = toEA( cmd.cs, x.addr );
int iscall = InstrIsSet( cmd.itype, CF_CALL );
ua_add_cref( x.offb, ea, iscall ? fl_CN : fl_JN );
if ( flow && iscall )
flow = func_does_return(ea);
}
}
//----------------------------------------------------------------------
static void TouchArg(op_t &x,int isAlt,int isload)
{
switch ( x.type )
{
case o_reg:
case o_phrase:
case o_port:
break;
case o_imm:
if ( !isload ) goto badTouch;
doImmdValue(x.n);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, OOF_SIGNED);
break;
case o_displ:
doImmdValue(x.n);
if ( isAlt ) break;
if ( isOff(uFlag, x.n) )
{
ua_add_off_drefs2(x, isload ? dr_R : dr_W, OOF_ADDR);
ea_t ea = calc_target(cmd.ea+x.offb, cmd.ea, x.n, x.addr);
ua_dodata2(x.offb, ea, x.dtyp);
if ( !isload )
doVar(ea);
}
break;
case o_near:
{
cref_t ftype = fl_JN;
ea_t ea = toEA(cmd.cs, x.addr);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
break;
case o_mem:
{
ea_t ea = toEA(dataSeg(), x.addr);
ua_add_dref(x.offb, ea, isload ? dr_R : dr_W);
}
break;
default:
badTouch:
if ( cmd.itype != AVR_lpm && cmd.itype != AVR_elpm )
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
}
//----------------------------------------------------------------------
static bool TouchArg(op_t &x,int isload)
{
dref_t xreftype;
uchar outf;
switch ( x.type )
{
case o_phrase: // 2 registers
case o_reg:
break;
case o_imm:
if ( !isload )
goto badTouch;
xreftype = dr_O;
outf = OOF_SIGNED;
goto makeImm;
case o_displ:
xreftype = isload ? dr_R : dr_W;
outf = OOF_SIGNED|OOF_ADDR;
makeImm:
doImmdValue();
if ( op_adds_xrefs(uFlag, x.n) )
ua_add_off_drefs2(x, xreftype, outf);
break;
case o_mem:
ua_dodata2(x.offb, x.addr, x.dtyp);
if ( !isload )
doVar(x.addr);
ua_add_dref(x.offb,x.addr,isload ? dr_R : dr_W);
break;
case o_near:
{
int iscall = InstrIsSet(cmd.itype,CF_CALL);
ua_add_cref(x.offb,x.addr,iscall ? fl_CN : fl_JN);
if ( iscall && !func_does_return(x.addr) )
return false;
}
break;
default:
badTouch:
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
return true;
}
//----------------------------------------------------------------------
static void process_operand(op_t &x,int isAlt,int isload)
{
switch ( x.type )
{
case o_reg:
case o_reglist:
return;
case o_imm:
QASSERT(10090, isload);
process_immediate_number(x.n);
if ( op_adds_xrefs(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, calc_opimm_flags());
break;
case o_phrase:
case o_displ:
process_immediate_number(x.n);
if ( isAlt ) break;
if ( op_adds_xrefs(uFlag, x.n) )
{
ea_t ea = ua_add_off_drefs2(x, isload ? dr_R : dr_W, calc_opdispl_flags());
if ( ea != BADADDR )
{
ua_dodata2(x.offb, ea, x.dtyp);
if ( !isload )
doVar(ea);
}
}
// create stack variables if required
if ( x.type == o_displ
&& may_create_stkvars()
&& !isDefArg(uFlag, x.n) )
{
func_t *pfn = get_func(cmd.ea);
if ( pfn != NULL
&& (issp(x.phrase)
|| isbp(x.phrase) && (pfn->flags & FUNC_FRAME) != 0) )
{
if ( ua_stkvar2(x, x.addr, STKVAR_VALID_SIZE) )
op_stkvar(cmd.ea, x.n);
}
}
break;
case o_near:
case o_far:
{
cref_t ftype = x.type == o_near ? fl_JN : fl_JF;
ea_t ea = calc_mem(x);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = x.type == o_near ? fl_CN : fl_CF;
}
ua_add_cref(x.offb, ea, ftype);
}
break;
case o_mem:
{
ea_t ea = calc_mem(x);
ua_add_dref(x.offb, ea, isload ? dr_R : dr_W);
ua_dodata2(x.offb, ea, x.dtyp);
if ( !isload ) doVar(ea);
}
break;
default:
INTERR(10091);
}
}
//----------------------------------------------------------------------
static int LoadArg(op_t &x)
{
dref_t xreftype;
switch ( x.type ) {
case o_reg:
{
if ( x.reg == R_sp ) goto Undefined;
// AbstractRegister *in = &i5_getreg(x.reg);
// if ( ! in->isDef() ) goto Undefined;
// r.doInt(in->value());
return 1;
}
case o_imm:
// r.doInt(unsigned(x.value));
xreftype = dr_O;
MakeImm:
doImmdValue(x.n);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, xreftype, 0);
return 1;
case o_displ:
// r.undef();
xreftype = dr_R;
goto MakeImm;
case o_mem:
{
ea_t ea = toEA(dataSeg_op(x.n),x.addr);
ua_add_dref(x.offb,ea,dr_R);
ua_dodata2(x.offb, ea, x.dtyp);
if ( !isVar(get_flags_novalue(ea)) && isLoaded(ea) )
{
// r.doInt( x.dtyp != dt_byte ? get_word(ea) : char(get_byte(ea)) );
return 1;
}
}
case o_phrase:
Undefined:
// r.undef();
break;
case o_near:
{
ea_t segbase = codeSeg(x.addr,x.n);
ea_t ea = toEA(segbase,x.addr);
ea_t thisseg = cmd.cs;
int iscall = InstrIsSet(cmd.itype,CF_CALL);
ua_add_cref(x.offb,
ea,
iscall ? ((segbase == thisseg) ? fl_CN : fl_CF)
: ((segbase == thisseg) ? fl_JN : fl_JF));
if ( iscall && !func_does_return(ea) )
flow = false;
// r.doInt(unsigned(x.addr));
}
return 1;
default:
// warning("%a: %s,%d: bad load optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
return 0;
}
//----------------------------------------------------------------------
static void TouchArg(op_t &x,int isAlt,int isload)
{
switch (x.type)
{
case o_phrase:
//Добавляем в список ошибок(выводим сообщение)
//ошибку и адресс где это случилось
//QueueMark(Q_jumps, cmd.ea);
case o_void:
case o_reg:
break;
case o_imm:
{
//Установить для данного байта признак immedia
doImmd(cmd.ea);
//Получить флаг для указанного линейного адресса
if(!isAlt)
{
uint32 offb;
ushort addr = ushort(x.addr);
if(x.type == o_displ )
{
addr += (ushort)cmd.ip;
addr += cmd.size;
//Получить линейный адресс
offb = (uint32)toEA(codeSeg(addr,x.n), 0);
DataSet(x, offb+addr, isload);
}
else if ( isOff(uFlag, x.n) )
{
reref:
ua_add_off_drefs(x, dr_O);
if ( x.type == o_displ )
//Преобразовать данные по указанному линейному адрессу в указанный тип
ua_dodata2(x.offb, calc_target(cmd.ea+x.offb, cmd.ea, x.n, x.addr), x.dtyp);
}
else if(x.type == o_displ && !x.reg && !isDefArg(uFlag, x.n) &&
set_offset(cmd.ea, x.n, toEA(cmd.cs,0))) goto reref;
}
} break;
case o_bit:
case o_mem:
// Конвертирование в данные(указан адресс) по указанному типу,
//добавить крос референсы для текущей инструкции
DataSet(x, toEA(codeSeg(x.addr,x.n), x.addr), isload);
break;
case o_near:
{
//Получить линейный адресс
ea_t ea = toEA(cmd.cs, x.addr);
//Проверить является ли значение по указанному линейному адрессу - инструкцией
int iscall = InstrIsSet(cmd.itype, CF_CALL);
//добавить крос референсы для текущей инструкции
ua_add_cref(x.offb, ea, iscall ? fl_CN : fl_JN);
if ( iscall ) flow = func_does_return(ea);
} break;
default:
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
}
//----------------------------------------------------------------------
static void handle_operand(op_t &x, bool read_access)
{
ea_t ea;
dref_t dreftype;
switch ( x.type )
{
case o_void:
case o_reg:
break;
case o_imm:
QASSERT(557, read_access);
dreftype = dr_O;
MAKE_IMMD:
doImmdValue();
if ( isOff(uFlag, x.n) )
ua_add_off_drefs(x, dreftype);
break;
case o_displ:
dreftype = read_access ? dr_R : dr_W;
switch ( x.phrase )
{
case rD: // "dp"
case rDX: // "dp, X"
case rDY: // "dp, Y"
case riDX: // "(dp, X)"
case rDi: // "(dp,n)"
case rDiL: // "long(dp,n)"
case rDiY: // "(dp,n), Y"
case rDiLY: // "long(dp,n), Y"
{
sel_t dp = get_segreg(cmd.ea, rD);
if ( dp != BADSEL )
{
ea_t orig_ea = dp + x.addr;
ea = xlat(orig_ea);
goto MAKE_DREF;
}
else
{
goto MAKE_IMMD;
}
}
case rAbsi: // "(abs)"
case rAbsX: // "abs, X"
case rAbsY: // "abs, Y"
case rAbsiL: // "long(abs)"
ea = toEA(dataSeg_op(x.n), x.addr);
goto MAKE_DREF;
case rAbsXi: // "(abs,X)"
ea = toEA(codeSeg(cmd.ea, x.n), x.addr); // jmp, jsr
goto MAKE_DREF;
case rAbsLX: // "long abs, X"
ea = x.addr;
goto MAKE_DREF;
default:
goto MAKE_IMMD;
}
case o_mem:
case o_mem_far:
ea = calc_addr(x);
MAKE_DREF:
ua_dodata2(x.offb, ea, x.dtyp);
if ( !read_access )
doVar(ea);
ua_add_dref(x.offb, ea, read_access ? dr_R : dr_W);
break;
case o_near:
case o_far:
{
ea_t orig_ea;
ea = calc_addr(x, &orig_ea);
if ( cmd.itype == M65816_per )
{
ua_add_dref(x.offb, ea, dr_O);
}
else
{
bool iscall = InstrIsSet(cmd.itype, CF_CALL);
cref_t creftype = x.type == o_near
? iscall ? fl_CN : fl_JN
: iscall ? fl_CF : fl_JF;
ua_add_cref(x.offb, ea, creftype);
if ( flow && iscall )
flow = func_does_return(ea);
}
}
break;
default:
INTERR(558);
}
}
static void op_emu(op_t& x, int fIsLoad)
{
char szLabel[128];
cref_t ftype;
ea_t ea;
switch (x.type)
{
case o_reg:
case o_phrase:
return;
case o_imm:
if (!fIsLoad) break;
op_imm(cmd.ea);
return;
case o_displ:
case o_mem:
switch (cmd.itype)
{
case M8B_IORD:
case M8B_IOWR:
case M8B_IOWX:
case M8B_IPRET:
ea = toIOP(x.addr);
if (ea != BADADDR)
{
ua_dodata2(x.offb, ea, x.dtyp);
if (!fIsLoad) doVar(ea);
ua_add_dref(x.offb, ea, cmd.itype == M8B_IORD ? dr_R : dr_W);
}
break;
default:
ea = toRAM(x.addr);
if (ea != BADADDR)
{
if (!has_any_name(get_flags_novalue(ea)))
{
qsnprintf(szLabel, sizeof(szLabel), "ram_%0.2X", x.addr);
set_name(ea, szLabel, SN_NOWARN);
}
ua_dodata2(x.offb, ea, x.dtyp);
if (!fIsLoad) doVar(ea);
ua_add_dref(x.offb, ea, cmd.itype == M8B_IORD ? dr_R : dr_W);
}
}
return;
case o_near:
ea = toROM(x.addr);
if (ea != BADADDR)
{
switch (cmd.itype)
{
case M8B_INDEX:
if (!has_any_name(get_flags_novalue(ea)))
{
qsnprintf(szLabel, sizeof(szLabel), "tbl_%0.4X", x.addr);
set_name(ea, szLabel, SN_NOWARN);
}
ua_add_dref(x.offb, ea, dr_R);
break;
default:
ftype = fl_JN;
if (InstrIsSet(cmd.itype, CF_CALL))
{
if (!func_does_return(ea))
fFlow = false;
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
}
return;
}
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
}
//----------------------------------------------------------------------
int emu(void)
{
if ( segtype(cmd.ea) == SEG_XTRN ) return 1;
//uint32 Feature = cmd.get_canon_feature();
int flag1 = is_forced_operand(cmd.ea, 0);
int flag2 = is_forced_operand(cmd.ea, 1);
int flag3 = is_forced_operand(cmd.ea, 2);
// Determine if the next instruction should be executed
flow = (InstrIsSet(cmd.itype, CF_STOP) != true);
if ( InstrIsSet(cmd.itype,CF_USE1) ) process_operand(cmd.Op1, flag1, 1);
if ( InstrIsSet(cmd.itype,CF_USE2) ) process_operand(cmd.Op2, flag2, 1);
if ( InstrIsSet(cmd.itype,CF_USE3) ) process_operand(cmd.Op3, flag3, 1);
if ( InstrIsSet(cmd.itype,CF_CHG1) ) process_operand(cmd.Op1, flag1, 0);
if ( InstrIsSet(cmd.itype,CF_CHG2) ) process_operand(cmd.Op2, flag2, 0);
if ( InstrIsSet(cmd.itype,CF_CHG3) ) process_operand(cmd.Op3, flag3, 0);
// check for DP changes
if ( cmd.itype == OAK_Dsp_lpg )
splitSRarea1(get_item_end(cmd.ea), PAGE, cmd.Op1.value & 0xFF, SR_auto);
if ( ( cmd.itype == OAK_Dsp_mov ) && (cmd.Op1.type == o_imm) && (cmd.Op2.type == o_reg) && (cmd.Op2.reg == ST1) )
splitSRarea1(get_item_end(cmd.ea), PAGE, cmd.Op1.value & 0xFF, SR_auto);
//Delayed Return
insn_t saved = cmd;
cycles = cmd.cmd_cycles;
delayed = false;
if ( decode_prev_insn(cmd.ea) != BADADDR )
{
if ( (cmd.itype == OAK_Dsp_retd) || (cmd.itype == OAK_Dsp_retid) )
delayed = true;
else
cycles += cmd.cmd_cycles;
if (!delayed)
if ( decode_prev_insn(cmd.ea) != BADADDR )
if ( (cmd.itype == OAK_Dsp_retd) || (cmd.itype == OAK_Dsp_retid) )
delayed = true;
}
if (delayed && (cycles > 1) )
flow = 0;
cmd = saved;
//mov #imm, pc
if ( ( cmd.itype == OAK_Dsp_mov ) && (cmd.Op2.type == o_reg) && (cmd.Op2.reg == PC) )
flow = 0;
if ( flow ) ua_add_cref(0,cmd.ea+cmd.size,fl_F);
if ( may_trace_sp() )
{
if ( !flow )
recalc_spd(cmd.ea); // recalculate SP register for the next insn
else
trace_sp();
}
return 1;
}
//----------------------------------------------------------------------
static void process_operand(op_t &x, int use)
{
switch ( x.type )
{
case o_bit:
case o_reg:
case o_cond8:
case o_cond2:
return;
case o_near:
case o_far:
{
if (cmd.itype != TMS320C54_rptb && cmd.itype != TMS320C54_rptbd)
{
cref_t ftype = fl_JN;
ea_t ea = calc_code_mem(x.addr, x.type == o_near);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = fl_CN;
}
#ifndef TMS320C54_NO_NAME_NO_REF
if ( x.dtyp == dt_byte )
ua_add_dref(x.offb, ea, dr_R);
else
ua_add_cref(x.offb, ea, ftype);
#endif
}
#ifndef TMS320C54_NO_NAME_NO_REF
else // evaluate RPTB[D] loops as dref
ua_add_dref(x.offb, calc_code_mem(x.addr), dr_I);
#endif
}
break;
case o_imm:
if ( !use ) error("interr: emu");
process_imm(x);
#ifndef TMS320C54_NO_NAME_NO_REF
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, x.Signed ? OOF_SIGNED : 0);
#endif
break;
case o_mem:
case o_farmem:
case o_mmr:
{
ea_t ea = calc_data_mem(x.addr, x.type == o_mem);
if (ea != BADADDR)
{
#ifndef TMS320C54_NO_NAME_NO_REF
ua_add_dref(x.offb, ea, use ? dr_R : dr_W);
#endif
ua_dodata2(x.offb, ea, x.dtyp);
if ( !use )
doVar(ea);
}
}
break;
case o_local: // local variables
if ( may_create_stkvars()
&& (get_func(cmd.ea) != NULL)
&& ua_stkvar2(x, x.addr, STKVAR_VALID_SIZE) )
{
op_stkvar(cmd.ea, x.n);
}
break;
case o_displ:
doImmd(cmd.ea);
break;
default:
warning("interr: emu2 address:%a operand:%d type:%d", cmd.ea, x.n, x.type);
}
}
bool
handle_operand(const op_t &op, enum opRefType ref_type)
{
ea_t ea;
sel_t data_selector;
bool flow = true;
switch ( op.type ) {
case o_reg:
//
// Register operand.
//
//
// Nothing needs to be calculated or examined for this
// operand.
//
break;
case o_imm:
//
// Immediate operand.
//
// Make sure that this operand reference isn't a write reference.
// (Writing to an immediate value is not allowed and is a sure
// sign of a badly decoded instruction).
//
if ( ref_type == hop_WRITE ) {
//
// Attempt to write to an immediate value.
// Error.
//
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), op.n, op.type);
break;
}
//
// SPECIAL INSTRUCTION CASE:
//
// The LDPK instruction is decoded by ana() to have an immediate
// value as an operand. However, this immediate value is to be
// the new data page pointer, which we must track for proper
// memory referencing.
//
if ( cmd.itype == I_LDPK ) {
//
// This is an LDPK instruction. Let the kernel know that
// we are changing the current data page pointer. We track
// this bit as though it were a virtual segment register named
// I_VDS, although it is not a true register in the CPU.
//
// Determine into which data page the instruction is attempting
// to point.
//
if ( op.value == 0 ) {
//
// Data page 0 is being loaded.
//
data_selector = tms320c1x_dpage0;
} else {
//
// Data page 1 is being loaded.
//
data_selector = tms320c1x_dpage1;
}
//
// Notify the IDA kernel of the change.
//
split_srarea(
cmd.ea, // The current instruction's address
IREG_VDS, // The segment register being modified
data_selector, // The new selector value being loaded
SR_auto // How the new value was determined
);
}
//
// Let the kernel know that the instruction's address should
// be marked with a 'has immediate value' flag.
// (Useful during search?)
//
doImmd(cmd.ea);
break;
case o_phrase:
//
// Processor-specific phrase.
//
// These operands have no currently trackable side effect.
//
break;
case o_mem:
//
// Direct memory reference.
//
//
// Ask the IDA kernel for the current data page pointer selector.
//
data_selector = get_segreg(cmd.ea, IREG_VDS);
//
// Is it known?
//
if ( data_selector == BADSEL ) {
//
// The current data page pointer is unknown.
// There is nothing to do.
//
} else {
//
// The current data page pointer is known.
// Calculate the full effective address being referenced
// by this operand.
//
ea = sel2ea(data_selector) + op.addr;
//
// Generate a data cross reference from this instruction
// to the target address.
//
ua_add_dref(op.offb, ea, ref_type == hop_READ ? dr_R : dr_W);
}
//
// TODO: DMOV, ...
// These instructions read from the address in their operands
// and write to the address ADJACENT to it.
//
break;
case o_near:
//
// Code reference in current segment.
//
//
// Determine the effective address of the reference.
//
ea = toEA(cmd.cs, op.addr);
//
// Is this a 'CALL' type reference, or a branch type reference?
//
if ( InstrIsSet(cmd.itype, CF_CALL) ) {
//
// This is a CALL type reference. Make a cross reference
// that notes it.
//
ua_add_cref(op.offb, ea, fl_CN);
if ( !func_does_return(ea) )
flow = false;
} else {
//
// This is a branch type reference. Make a cross reference
// that notes it.
//
ua_add_cref(op.offb, ea, fl_JN);
}
break;
default:
//
// Unhandled operand type.
// Error.
//
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), op.n, op.type);
break;
}
return flow;
}
//----------------------------------------------------------------------
static void process_operand(op_t &x, int use)
{
switch ( x.type )
{
case o_reg:
return;
case o_near:
{
if (cmd.itype != TMS320C3X_RPTB )
{
cref_t ftype = fl_JN;
ea_t ea = calc_code_mem(x);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
else // evaluate RPTB loops as dref
ua_add_dref(x.offb, calc_code_mem(x), dr_I);
}
break;
case o_imm:
if ( !use ) error("interr: emu");
process_imm(x);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, 0);
break;
case o_mem:
{
ea_t ea = calc_data_mem(x);
if (ea != BADADDR)
{
ua_add_dref(x.offb, ea, use ? dr_R : dr_W);
ua_dodata2(x.offb, ea, x.dtyp);
if ( !use )
doVar(ea);
}
}
break;
case o_phrase:
break;
case o_displ:
doImmd(cmd.ea);
break;
default:
if ( x.type == o_void )
{
if ( cmd.itype == TMS320C3X_ABSF )
break;
if ( cmd.itype == TMS320C3X_ABSI )
break;
}
warning("interr: emu2 address:%a operand:%d type:%d", cmd.ea, x.n, x.type);
}
}
//----------------------------------------------------------------------
static void TouchArg(op_t &x,int isload)
{
ea_t ea;
switch ( x.type )
{
case o_phrase: // 2 registers or indirect addressing
if ( cmd.itype != TMS_mar && cmd.itype != TMS2_mar
&& find_ar(&ea) ) goto set_dref;
case o_reg:
case o_bit:
case o_cond:
break;
case o_imm:
if ( ! isload ) goto badTouch;
doImmdValue();
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, is_mpy() ? OOF_SIGNED : 0);
break;
case o_mem:
ea = toEA(dataSeg_op(x.n),x.addr);
set_dref:
ua_dodata2(x.offb, ea, x.dtyp);
if ( ! isload )
doVar(ea);
ua_add_dref(x.offb,ea,isload ? dr_R : dr_W);
if ( x.type == o_mem )
if ( cmd.itype == TMS_dmov ||
cmd.itype == TMS_ltd ||
cmd.itype == TMS_macd ||
cmd.itype == TMS_madd ||
cmd.itype == TMS2_dmov ||
cmd.itype == TMS2_macd ) ua_add_dref(x.offb,ea+1,dr_W);
break;
case o_near:
{
ea_t segbase = codeSeg(x.addr, x.n);
ea = toEA(segbase, x.addr);
if ( cmd.itype == TMS_blpd ||
cmd.itype == TMS_mac ||
cmd.itype == TMS_macd ||
cmd.itype == TMS2_blkp ||
cmd.itype == TMS2_mac ||
cmd.itype == TMS2_macd
) goto set_dref;
uval_t thisseg = cmd.cs;
int iscall = InstrIsSet(cmd.itype,CF_CALL);
if ( cmd.itype == TMS_rptb && isTail(get_flags_novalue(ea)) )
{
// small hack to display end_loop-1 instead of before_end_loop+1
ea++;
}
ua_add_cref(x.offb,
ea,
iscall ? ((segbase == thisseg) ? fl_CN : fl_CF)
: ((segbase == thisseg) ? fl_JN : fl_JF));
if ( iscall )
{
if ( !func_does_return(ea) )
flow = false;
}
}
break;
default:
badTouch:
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
}
static void handle_operand(op_t &x,int loading)
{
switch ( x.type )
{
case o_phrase: // no special hanlding for these types
case o_reg:
break;
case o_imm: // an immediate number as an operand
if ( !loading ) goto BAD_LOGIC; // this can't happen!
doImmdValue(); // handle immediate number
// if the value was converted to an offset, then create a data xref:
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, OOFS_IFSIGN);
break;
case o_displ:
doImmdValue(); // handle immediate number
// if the value was converted to an offset, then create a data xref:
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, loading?dr_R:dr_W, OOFS_IFSIGN|OOF_ADDR);
break;
case o_bit: // 8051 specific operand types - bits
case o_bitnot:
x.addr = (x.reg & 0xF8);
if( (x.addr & 0x80) == 0 ) x.addr = x.addr/8 + 0x20;
attach_bit_comment(x.addr, x.reg & 7); // attach a comment if necessary
goto MEM_XREF;
case o_bit251:
attach_bit_comment(x.addr, x.b251_bit);
/* no break */
case o_mem: // an ordinary memory data reference
MEM_XREF:
{
ea_t dea = map_addr(x.addr, x.n, true);
ua_dodata2(x.offb, dea, x.dtyp);
if ( !loading )
doVar(dea); // write access
ua_add_dref(x.offb, dea, loading ? dr_R : dr_W);
}
break;
case o_near: // a code reference
{
ea_t ea = map_addr(x.addr, x.n, false);
int iscall = InstrIsSet(cmd.itype, CF_CALL);
ua_add_cref(x.offb, ea, iscall ? fl_CN : fl_JN);
if ( flow && iscall )
flow = func_does_return(ea);
}
break;
default:
BAD_LOGIC:
warning("%a: %s,%d: bad optype %d", cmd.ea, cmd.get_canon_mnem(), x.n, x.type);
break;
}
}
//----------------------------------------------------------------------
// поставим использование/изменение операндов
static void near TouchArg(op_t &x,int isAlt,int isload)
{
ea_t ea = toEA(codeSeg(x.addr,x.n), x.addr);
switch ( x.type ) {
// эта часть не используется !
case o_void: break;
// тут тоже нечего делать
case o_reg: break;
// непосредственный операнд
case o_imm: // непосредственный не может меняться
if ( ! isload ) goto badTouch;
// поставим флажок непосредственного операнда
doImmd(cmd.ea);
// если не форсирован и помечен смещением
if ( !isAlt && isOff(uFlag,x.n) )
// это смещение !
ua_add_dref(x.offb,ea,dr_O);
break;
// переход или вызов
case o_near: // это вызов ? (или переход)
if(InstrIsSet(cmd.itype,CF_CALL)){
// поставим ссылку на код
ua_add_cref(x.offb,ea,fl_CN);
// это функция без возврата ?
#if IDP_INTERFACE_VERSION > 37
flow = func_does_return(ea);
#else
// получим описатель функции
func_t *pfn = get_func(ea);
// если функция описана и не имеет возврата - остановим
if(pfn != NULL && (pfn->flags & FUNC_NORET) ) flow = false;
#endif
}
else ua_add_cref(x.offb,ea,fl_JN);
break;
// ссылка на ячейку памяти
case o_mem: // сделаем данные по указанному адресу
ua_dodata2(x.offb, ea, x.dtyp);
// если изменяется - поставим переменную
if ( ! isload ) doVar(ea);
// добавим ссылку на память
ua_add_dref(x.offb,ea,isload ? dr_R : dr_W);
break;
// прочее - сообщим ошибку
default:
badTouch:
#if IDP_INTERFACE_VERSION > 37
warning("%a %s,%d: bad optype %d",
cmd.ea, cmd.get_canon_mnem(),
#else
warning("%08lX %s,%d: bad optype (%x)",
cmd.ea,(char far *)Instructions[cmd.itype].name,
#endif
x.n, x.type);
break;
}
}
//----------------------------------------------------------------------
static void process_operand(op_t &x,int ,int isload)
{
if ( cmd.Op2.type == o_reg && cmd.Op2.reg == F || cmd.itype == PIC_swapf ) isload = 0;
switch ( x.type )
{
case o_reg:
return;
case o_imm:
if ( !isload ) error("interr: emu");
process_immediate_number(x.n);
if ( isOff(uFlag, x.n) )
ua_add_off_drefs2(x, dr_O, calc_outf(x));
break;
case o_near:
{
cref_t ftype = fl_JN;
ea_t ea = calc_code_mem(x.addr);
if ( InstrIsSet(cmd.itype, CF_CALL) )
{
if ( !func_does_return(ea) )
flow = false;
ftype = fl_CN;
}
ua_add_cref(x.offb, ea, ftype);
}
break;
case o_mem:
{
ea_t ea = calc_data_mem(x.addr);
destroy_if_unnamed_array(ea);
ua_add_dref(x.offb, ea, isload ? dr_R : dr_W);
ua_dodata2(x.offb, ea, x.dtyp);
if ( !isload )
doVar(ea);
if ( may_create_stkvars())
{
if ( x.addr == PIC16_INDF2 )
{
func_t *pfn = get_func(cmd.ea);
if ( pfn != NULL && (pfn->flags & FUNC_FRAME) != 0 )
{
ua_stkvar2(cmd.Op1, 0, STKVAR_VALID_SIZE);
}
}
else if ( x.addr == PIC16_PLUSW2 )
{
insn_t saved = cmd;
if ( decode_prev_insn(cmd.ea) != BADADDR && cmd.itype == PIC_movlw )
{
func_t *pfn = get_func(cmd.ea);
if ( pfn != NULL && (pfn->flags & FUNC_FRAME) != 0 )
{
if ( ua_stkvar2(cmd.Op1, cmd.Op1.value, STKVAR_VALID_SIZE) )
op_stkvar(cmd.ea, cmd.Op1.n);
}
}
cmd = saved;
}
}
}
break;
default:
warning("interr: emu2 %a", cmd.ea);
}
}