unsigned DIGENTRY MIDisasmFormat( mad_disasm_data *dd, mad_disasm_piece dp, unsigned radix, unsigned max, char *buff )
{
char nbuff[20];
char obuff[256];
char *np;
char *op;
unsigned nlen;
unsigned olen;
unsigned len;
dis_format_flags ff;
nbuff[0] = '\0';
obuff[0] = '\0';
np = (dp & MDP_INSTRUCTION) ? nbuff : NULL;
op = (dp & MDP_OPERANDS) ? obuff : NULL;
ff = DFF_ASM;
if( MADState->disasm_state & DT_UPPER ) ff |= DFF_INS_UP | DFF_REG_UP;
if( MADState->disasm_state & DT_INSIDE ) ff |= DFF_ALT_INDEXING;
dd->radix = radix;
if( DisFormat( &DH, dd, &dd->ins, ff, np, op ) != DR_OK ) {
return( 0 );
}
olen = strlen( obuff );
nlen = strlen( nbuff );
if( dp == MDP_ALL ) nbuff[ nlen++ ] = ' ';
len = nlen + olen;
if( max > 0 ) {
--max;
if( max > len ) max = len;
if( nlen > max ) nlen = max;
memcpy( buff, nbuff, nlen );
buff += nlen;
max -= nlen;
if( olen > max ) olen = max;
memcpy( buff, obuff, olen );
buff[max] = '\0';
}
return( len );
}
static void dumpCodeBuff( void (*output)( char ),
code_buff *buff )
{
dis_handle handle;
dis_dec_ins ins;
char name[ MAX_INS_NAME ];
char ops[ MAX_OBJ_NAME + 24 ];
DisInit( buff->cpu, &handle );
while( buff->offset < buff->length ){
DisDecodeInit( &handle, &ins );
if( buff->cpu == DISCPU_x86 ) {
ins.flags |= DIF_X86_USE32_FLAGS;
}
DisDecode( &handle, buff, &ins );
DisFormat( &handle, buff, &ins, DFF_AXP_SYMBOLIC_REG|DFF_PSEUDO, &name, &ops );
myPrintf( output, "\t%4.4x:", buff->offset );
dumpOpcodes( output, buff->start+buff->offset, ins.size );
myPrintf( output, "\t%s\t%s\n", name, ops );
buff->offset += ins.size;
}
DisFini( &handle );
}
num_errors DoPass2( section_ptr sec, unsigned_8 *contents, orl_sec_size size,
label_list sec_label_list, ref_list sec_ref_list )
// perform pass 2 on one section
{
struct pass2 data;
label_entry l_entry;
dis_dec_ins decoded;
char name[ MAX_INS_NAME ];
char ops[ MAX_OBJ_NAME + 24 ]; // at most 1 label/relocation per instruction, plus room for registers, brackets and other crap
dis_inst_flags flags;
scantab_ptr st;
int is_intel;
sa_disasm_struct sds;
char *FPU_fixup;
int pos_tabs;
bool is32bit;
routineBase = 0;
st = sec->scan;
data.size = size;
sds.data = contents;
sds.last = size - 1;
l_entry = NULL;
if( sec_label_list != NULL ) {
l_entry = sec_label_list->first;
}
if( sec_ref_list != NULL ) {
data.r_entry = sec_ref_list->first;
} else {
data.r_entry = NULL;
}
data.disassembly_errors = 0;
if( source_mix ) {
GetSourceFile( sec );
}
PrintHeader( sec );
if( size && sec_label_list )
PrintAssumeHeader( sec );
flags.u.all = DIF_NONE;
if( GetMachineType() == ORL_MACHINE_TYPE_I386 ) {
if( ( GetFormat() != ORL_OMF ) ||
( ORLSecGetFlags( sec->shnd ) & ORL_SEC_FLAG_USE_32 ) ) {
flags.u.x86 = DIF_X86_USE32_FLAGS;
}
is_intel = 1;
} else {
is_intel = IsIntelx86();
}
is32bit = ( size >= 0x10000 );
for( data.loop = 0; data.loop < size; data.loop += decoded.size ) {
// process data in code segment
while( st && ( data.loop > st->end ) ) {
st = st->next;
}
if( st && ( data.loop >= st->start ) ) {
decoded.size = 0;
processDataInCode( sec, contents, &data, st->end - data.loop, &l_entry );
st = st->next;
continue;
}
// data may not be listed in scan table, but a fixup at this offset will
// give it away
while( data.r_entry && ( data.r_entry->offset < data.loop ) ) {
data.r_entry = data.r_entry->next;
}
FPU_fixup = processFpuEmulatorFixup( &data.r_entry, data.loop );
if( data.r_entry && ( data.r_entry->offset == data.loop ) ) {
if( is_intel || IsDataReloc( data.r_entry ) ) {
// we just skip the data
decoded.size = 0;
processDataInCode( sec, contents, &data, RelocSize( data.r_entry ), &l_entry );
continue;
}
}
if( source_mix ) {
MixSource( data.loop );
}
DisDecodeInit( &DHnd, &decoded );
decoded.flags.u.all |= flags.u.all;
sds.offs = data.loop;
DisDecode( &DHnd, &sds, &decoded );
if( sec_label_list ) {
l_entry = handleLabels( sec->name, data.loop, data.loop + decoded.size, l_entry, size );
if( ( l_entry != NULL )
&& ( l_entry->offset > data.loop )
&& ( l_entry->offset < data.loop + decoded.size ) ) {
/*
If we have a label planted in the middle of this
instruction (see inline memchr for example), put
out a couple of data bytes, and then restart decode
and label process from offset of actual label.
*/
decoded.size = 0;
processDataInCode( sec, contents, &data, l_entry->offset - data.loop, &l_entry );
continue;
}
}
DisFormat( &DHnd, &data, &decoded, DFormat, name, sizeof( name ), ops, sizeof( ops ) );
if( FPU_fixup != NULL ) {
if( !(DFormat & DFF_ASM) ) {
BufferAlignToTab( PREFIX_SIZE_TABS );
}
BufferStore( "\t%sFPU fixup %s\n", CommentString, FPU_fixup );
}
if( !(DFormat & DFF_ASM) ) {
unsigned_64 *tmp_64;
unsigned_32 *tmp_32;
unsigned_16 *tmp_16;
tmp_64 = (unsigned_64 *)(contents + data.loop);
tmp_32 = (unsigned_32 *)(contents + data.loop);
tmp_16 = (unsigned_16 *)(contents + data.loop);
if( DHnd.need_bswap ) {
switch( DisInsSizeInc( &DHnd ) ) {
//case 8: SWAP_64( *tmp_64 );
// break;
case 4: SWAP_32( *tmp_32 );
break;
case 2: SWAP_16( *tmp_16 );
break;
default:
break;
}
}
PrintLinePrefixAddress( data.loop, is32bit );
PrintLinePrefixData( contents, data.loop, size, DisInsSizeInc( &DHnd ), decoded.size );
BufferAlignToTab( PREFIX_SIZE_TABS );
}
BufferStore( "\t%s", name );
if( *ops != '\0' ) {
pos_tabs = ( DisInsNameMax( &DHnd ) + TAB_WIDTH ) / TAB_WIDTH + 1;
if( !(DFormat & DFF_ASM) ) {
pos_tabs += PREFIX_SIZE_TABS;
}
BufferAlignToTab( pos_tabs );
BufferConcat( ops );
}
BufferConcatNL();
BufferPrint();
}
if( sec_label_list ) {
l_entry = handleLabels( sec->name, size, (orl_sec_offset)-1, l_entry, size );
}
if( !(DFormat & DFF_ASM) ) {
routineSize = data.loop - routineBase;
BufferConcatNL();
BufferMsg( ROUTINE_SIZE );
BufferStore(" %d ", routineSize );
BufferMsg( BYTES );
BufferConcat(", ");
BufferMsg( ROUTINE_BASE );
BufferStore(" %s + %04X\n\n", sec->name, routineBase );
BufferPrint();
}
if( source_mix ) {
EndSourceMix();
}
PrintTail( sec );
return( data.disassembly_errors );
}
