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-rwxr-xr-xsrc/cassembler.cpp754
1 files changed, 754 insertions, 0 deletions
diff --git a/src/cassembler.cpp b/src/cassembler.cpp
new file mode 100755
index 0000000..1175181
--- /dev/null
+++ b/src/cassembler.cpp
@@ -0,0 +1,754 @@
+/* The assembler works, but it ain't a pretty sight.
+ * Some day, I'll rewrite this part.
+ * -- M6
+ */
+
+#include "cassembler.h"
+#include "cpicoblaze.h"
+
+#include <stdio.h>
+
+#define NO_LINE_NR 0xFFFFFFFF
+
+const char *instructions[] = {
+ "ADD", "ADDCY", "AND", "CALL", "COMPARE", "DISABLE", "ENABLE", "FETCH", "INPUT",
+ "JUMP", "LOAD", "OR", "OUTPUT", "RETURN", "RETURNI", "ROTATE", "RL", "RR", "SL0",
+ "SL1", "SLA", "SLX", "SR0", "SR1", "SRA", "SRX", "STORE", "SUB", "SUBCY", "TEST",
+ "XOR"
+} ;
+
+/* Helper function to make a string uppercase */
+string toUpper( string str )
+{
+ string upperStr ;
+ unsigned int i ;
+
+ upperStr = "" ;
+ for ( i = 0 ; i < str.length() ; i++ )
+ upperStr += toupper( str[ i ] ) ;
+
+ return upperStr ;
+}
+
+CAssembler::CAssembler()
+{
+ m_messageList = 0 ;
+}
+
+CAssembler::~CAssembler()
+{
+}
+
+void CAssembler::error( unsigned int line, const char *description )
+{
+ cout << line << ": " << description << "\r\n" ;
+
+ if ( m_messageList ) {
+ char str[ 128 ] ;
+ sprintf( str, "%u", line + 1 ) ;
+ QListViewItem *item = new QListViewItem( m_messageList, m_messageList->lastChild() ) ;
+
+ if ( line != NO_LINE_NR )
+ item->setText( 0, str ) ;
+ item->setText( 1, description ) ;
+ }
+}
+
+int CAssembler::getRegister( string name )
+{
+ if ( name[ 0 ] != 's' || name.length() <= 1 )
+ return -1 ;
+
+ int reg ;
+
+ if ( sscanf( name.c_str() + 1, "%X", &reg ) != 1 )
+ return -1 ;
+
+ if ( reg < 0 || reg > 15 )
+ return -1 ;
+
+ return reg ;
+
+}
+
+int CAssembler::getInstruction( string name )
+{
+ unsigned int i ;
+ string str = toUpper( name ) ;
+ for ( i = 0 ; i < sizeof( instructions ) / sizeof( char *); i++ )
+ if ( str == instructions[ i ] )
+ return i ;
+ return -1 ;
+}
+
+bool CAssembler::buildSymbolTable()
+{
+ list<CSourceLine*>::iterator it ;
+ unsigned int address = 0 ;
+ bool ret = TRUE ;
+
+ for ( it = m_source.begin() ; it != m_source.end() ; it++ ) {
+ string name = toUpper( (*it)->getColumn( 0 ) ) ; // case insensitive
+
+ if ( name == "NAMEREG" ) {
+ if ( !(*it)->isColumn( 3 ) ) {
+ error( (*it)->m_lineNr, "'NAMEREG registername, newname' expected" ) ;
+ ret = FALSE ;
+ }
+
+ if ( (*it)->isColumn( 4 ) ) {
+ error( (*it)->m_lineNr, "Rubbish found at end of line" ) ;
+ ret = FALSE ;
+ }
+
+ if ( (*it)->getColumn( 2 ) != "," ) {
+ error( (*it)->m_lineNr, "Comma expected" ) ;
+ ret = FALSE ;
+ }
+
+
+ CNamereg *nr = new CNamereg ;
+ nr->reg = (*it)->getColumn( 1 ) ;
+ nr->name = (*it)->getColumn( 3 ) ;
+ m_registerTable.push_back( nr ) ;
+ (*it)->m_type = CSourceLine::stNamereg ;
+
+ } else if ( name == "CONSTANT" ) {
+ if ( !(*it)->isColumn( 3 ) ) {
+ error( (*it)->m_lineNr, "'CONSTANT name, valued' expected" ) ;
+ ret = FALSE ;
+ }
+
+ if ( (*it)->isColumn( 4 ) ) {
+ error( (*it)->m_lineNr, "Rubbish found at end of line" ) ;
+ ret = FALSE ;
+ }
+
+
+ if ( (*it)->getColumn( 2 ) != "," ) {
+ error( (*it)->m_lineNr, "Comma expected" ) ;
+ ret = FALSE ;
+ }
+
+ CConstant *nr = new CConstant ;
+ nr->value = (*it)->getColumn( 3 ) ;
+ nr->name = (*it)->getColumn( 1 ) ; ;
+ m_constantTable.push_back( nr ) ;
+ (*it)->m_type = CSourceLine::stConstant ;
+ } else if ( name == "ADDRESS" ) {
+ if ( !(*it)->isColumn( 1 ) ) {
+ error( (*it)->m_lineNr, "Value expected" ) ;
+ ret = FALSE ;
+ }
+
+ if ( (*it)->isColumn( 4 ) ) {
+ error( (*it)->m_lineNr, "Rubbish found at end of line" ) ;
+ ret = FALSE ;
+ }
+
+ if ( sscanf( (*it)->getColumn( 1 ).c_str(), "%X", &address ) != 1 ) {
+ error( (*it)->m_lineNr, "Invalid address" ) ;
+ ret = FALSE ;
+ }
+ (*it)->m_type = CSourceLine::stAddress ;
+ (*it)->m_address = address ;
+
+ } else if ( getInstruction( (*it)->getColumn( 0 ) ) < 0 ) {
+ CLabel *label = new CLabel ;
+ label->name = (*it)->getColumn( 0 ) ;
+ char buf[ 32 ] ;
+ sprintf( buf, "%d", address ) ;
+ label->value = buf ;
+ m_labelTable.push_back( label ) ;
+
+ (*it)->m_type = CSourceLine::stLabel ;
+ (*it)->m_address = address ;
+ if ( (*it)->isColumn( 1 ) && (*it)->getColumn( 1 ) == ":" ) {
+ if ( (*it)->isColumn( 2 ) ) {
+ if ( getInstruction( (*it)->getColumn( 2 ) ) < 0 ) {
+ error( (*it)->m_lineNr, "Instruction expected" ) ;
+ ret = FALSE ;
+ } else {
+ address = address + 1 ;
+ }
+ }
+ } else {
+ error( (*it)->m_lineNr, "Label or Instruction expected" ) ;
+ ret = FALSE ;
+ }
+ } else {
+ (*it)->m_address = address ;
+ address = address + 1 ;
+ }
+ }
+
+ cout << "Constants :\r\n" ;
+ list<CConstant*>::iterator it0 ;
+ for ( it0 = m_constantTable.begin() ; it0 != m_constantTable.end() ; it0++ ) {
+ cout << (*it0)->name << " = " << (*it0)->value << "\r\n" ;
+ }
+
+ cout << "Namereg :\r\n" ;
+ list<CNamereg*>::iterator it1 ;
+ for ( it1 = m_registerTable.begin() ; it1 != m_registerTable.end() ; it1++ ) {
+ cout << (*it1)->reg << " = " << (*it1)->name << "\r\n" ;
+ }
+
+ cout << "labels :\r\n" ;
+ list<CLabel*>::iterator it2 ;
+ for ( it2 = m_labelTable.begin() ; it2 != m_labelTable.end() ; it2++ ) {
+ cout << (*it2)->name << " = " << (*it2)->value << "\r\n" ;
+ }
+ return ret ;
+}
+
+string CAssembler::translateRegister( string name )
+{
+ list<CNamereg*>::iterator it1 ;
+ for ( it1 = m_registerTable.begin() ; it1 != m_registerTable.end() ; it1++ ) {
+ if ( (*it1)->name == name )
+ return (*it1)->reg ;
+ }
+
+ return name ;
+
+}
+
+string CAssembler::translateConstant( string name )
+{
+ list<CConstant*>::iterator it1 ;
+ for ( it1 = m_constantTable.begin() ; it1 != m_constantTable.end() ; it1++ ) {
+ if ( (*it1)->name == name )
+ return (*it1)->value ;
+ }
+
+ return name ;
+}
+
+string CAssembler::translateLabel( string label )
+{
+ list<CLabel*>::iterator it1 ;
+ for ( it1 = m_labelTable.begin() ; it1 != m_labelTable.end() ; it1++ ) {
+ if ( (*it1)->name == label )
+ return (*it1)->value ;
+ }
+
+ return label ;
+}
+
+bool CAssembler::addInstruction( instrNumber instr, CSourceLine sourceLine, int offset )
+{
+ char err_desc[ 256 ] ;
+ unsigned int address = sourceLine.m_address ;
+ int maxColumn = 0 ;
+ string s1 = sourceLine.getColumn( offset + 1 ) ;
+ string s2 = sourceLine.getColumn( offset + 2 ) ;
+ string s3 = sourceLine.getColumn( offset + 3 ) ;
+ int line = sourceLine.m_lineNr ;
+
+ uint32_t code ;
+ string s ;
+ bool b ;
+ switch( instr ) {
+
+ case ENABLE:
+ case DISABLE:
+ if ( toUpper( s1 ) != "INTERRUPT" ) {
+ error( line, "'INTERRUPT' expected" ) ;
+ return FALSE ;
+ }
+ if ( instr == ENABLE )
+ code = instrENABLE_INTERRUPT ;
+ else
+ code = instrDISABLE_INTERRUPT ;
+
+ maxColumn = 2 ;
+
+ break ;
+ case RETURNI:
+ if ( toUpper( s1 ) == "ENABLE" ) {
+ code = instrRETURNI_ENABLE ;
+ } else if ( toUpper( s1 ) == "DISABLE" ) {
+ code = instrRETURNI_DISABLE ;
+ } else {
+ error( line, "'ENABLE' or 'DISABLE' expected" ) ;
+ }
+ maxColumn = 2 ;
+
+ break ;
+
+ // Almost the same instructions
+ case CALL:
+ case JUMP:
+ case RETURN:
+ b = TRUE ;
+ maxColumn= 2 ;
+ if ( toUpper( s1 ) == "C" ) {
+ switch( instr ) {
+ case CALL : code = instrCALLC ; break ;
+ case JUMP : code = instrJUMPC ; break ;
+ case RETURN : code = instrRETURNC ; break ;
+ default: error( line, "'CALL', 'JUMP' or 'RETURN' expected" ) ; return FALSE ;
+ }
+ } else if ( toUpper( s1 ) == "NC" ) {
+ switch( instr ) {
+ case CALL : code = instrCALLNC ; break ;
+ case JUMP : code = instrJUMPNC ; break ;
+ case RETURN : code = instrRETURNNC ; break ;
+ default: error( line, "'CALL', 'JUMP' or 'RETURN' expected" ) ; return FALSE ;
+ }
+ } else if ( toUpper( s1 ) == "NZ" ) {
+ switch( instr ) {
+ case CALL : code = instrCALLNZ ; break ;
+ case JUMP : code = instrJUMPNZ ; break ;
+ case RETURN : code = instrRETURNNZ ; break ;
+ default: error( line, "'CALL', 'JUMP' or 'RETURN' expected" ) ; return FALSE ;
+ }
+ } else if ( toUpper( s1 ) == "Z" ) {
+ switch( instr ) {
+ case CALL : code = instrCALLZ ; break ;
+ case JUMP : code = instrJUMPZ ; break ;
+ case RETURN : code = instrRETURNZ ; break ;
+ default: error( line, "'CALL', 'JUMP' or 'RETURN' expected" ) ; return FALSE ;
+ }
+ } else {
+ switch( instr ) {
+ case CALL : code = instrCALL ; break ;
+ case JUMP : code = instrJUMP ; break ;
+ case RETURN : code = instrRETURN ; break ;
+ default: error( line, "'CALL', 'JUMP' or 'RETURN' expected" ) ; return FALSE ;
+ }
+ b = FALSE ;
+ maxColumn = 1 ;
+ }
+
+
+ if ( instr != RETURN ) {
+ if ( b ) {
+ if ( s2 != "," ) {
+ error( line, "Comma expected" ) ;
+ return FALSE ;
+ }
+ s = s3 ;
+ } else
+ s = s1 ;
+
+ maxColumn = b ? 4 : 2 ;
+
+ s = translateLabel( s ) ;
+ int labelVal ;
+
+ if ( sscanf( s.c_str(), "%d", &labelVal ) != 1 ) {
+ error( line, "Invalid label" ) ;
+ return FALSE ;
+ }
+
+ code |= labelVal ;
+ }
+ break ;
+
+ // Instruction that expect first an registername
+ default:
+ int reg = getRegister( translateRegister( s1 ) ) ;
+ if ( reg < 0 ) {
+ error( line, "Registername expected" ) ;
+ return FALSE ;
+ }
+
+ code = instrROTATE | (reg<<8) ;
+ maxColumn = 2 ;
+ switch ( instr ) {
+ case RL: code |= instrRL_SX ; break ;
+ case RR: code |= instrRR_SX ; break ;
+ case SL0: code |= instrSL0_SX ; break ;
+ case SL1: code |= instrSL1_SX ; break ;
+ case SLA: code |= instrSLA_SX ; break ;
+ case SLX: code |= instrSLX_SX ; break ;
+ case SR0: code |= instrSR0_SX ; break ;
+ case SR1: code |= instrSR1_SX ; break ;
+ case SRA: code |= instrSRA_SX ; break ;
+ case SRX: code |= instrSRX_SX ; break ;
+
+ // Instructions that expect a registername and then a comma
+ default:
+ if ( s2 != "," ) {
+ error( line, "Comma expected" ) ;
+ return FALSE ;
+ }
+
+ switch( instr ) {
+ // Instruction Register Comma '(' or value
+ case STORE:
+ case OUTPUT:
+ case INPUT:
+ case FETCH:
+ if ( sourceLine.getColumn( offset + 3 ) == "(" ) {
+ if ( !sourceLine.isColumn( offset + 5 ) || sourceLine.getColumn( offset + 5 ) != ")" ) {
+ error( line, "')' expected" ) ;
+ return FALSE ;
+ }
+
+ int reg2 = getRegister( translateRegister( sourceLine.getColumn( offset + 4 ) ) ) ;
+ if ( reg2 < 0 ) {
+ error( line, "Register expected" ) ;
+ return FALSE ;
+ }
+ code = (reg << 8) | (reg2 << 4) ;
+ switch( instr ) {
+ case STORE : code |= instrSTORE_SX_SY ; break ;
+ case OUTPUT: code |= instrOUTPUT_SX_SY ; break ;
+ case INPUT : code |= instrINPUT_SX_SY ; break ;
+ case FETCH : code |= instrFETCH_SX_SY ; break ;
+ default: error( line, "'STORE', 'OUTPUT', 'INPUT' or 'FETCH' expected" ) ; return FALSE ;
+ }
+ maxColumn = 6 ;
+ } else {
+
+ unsigned int value ;
+ if ( sscanf( translateConstant( s3 ).c_str(), "%X", &value ) != 1 ) {
+ sprintf( err_desc, "Value or (regname) expected, but \"%s\" found.", s3.c_str() ) ;
+ error( line, err_desc ) ;
+ return FALSE ;
+ }
+
+ code = (reg << 8) | value ;
+ switch( instr ) {
+ case STORE : code |= instrSTORE_SX_SS ; break ;
+ case OUTPUT: code |= instrOUTPUT_SX_PP ; break ;
+ case INPUT : code |= instrINPUT_SX_PP ; break ;
+ case FETCH : code |= instrFETCH_SX_SS ; break ;
+ default: error( line, "'STORE', 'OUTPUT', 'INPUT' or 'FETCH' expected" ) ; return FALSE ;
+ }
+ maxColumn = 4 ;
+ }
+ break ;
+ default:
+ // Instruction register comma register or value
+ int reg2 = getRegister( translateRegister( s3 ) ) ;
+
+ maxColumn = 4 ;
+ if ( reg2 < 0 ) {
+ unsigned int value ;
+ if ( sscanf( translateConstant( s3 ).c_str(), "%X", &value ) != 1 ) {
+ sprintf( err_desc, "Value expected, but \"%s\" found.", s3.c_str() ) ;
+ error( line, err_desc ) ;
+ return FALSE ;
+ }
+ code = (reg << 8) | value ;
+ switch( instr ) {
+ case ADD : code |= instrADD_SX_KK ; break ;
+ case ADDCY : code |= instrADDCY_SX_KK ; break ;
+ case AND : code |= instrAND_SX_KK ; break ;
+ case COMPARE : code |= instrCOMPARE_SX_KK ; break ;
+ case LOAD : code |= instrLOAD_SX_KK ; break ;
+ case OR : code |= instrOR_SX_KK ; break ;
+ case SUB : code |= instrSUB_SX_KK ; break ;
+ case SUBCY : code |= instrSUBCY_SX_KK ; break ;
+ case TEST : code |= instrTEST_SX_KK ; break ;
+ case XOR : code |= instrXOR_SX_KK ; break ;
+ default : error( line, "Unknown instruction" ) ; return FALSE ;
+ }
+ } else {
+ code = ( reg << 8 ) | ( reg2 << 4 ) ;
+ switch( instr ) {
+ case ADD : code |= instrADD_SX_SY ; break ;
+ case ADDCY : code |= instrADDCY_SX_SY ; break ;
+ case AND : code |= instrAND_SX_SY ; break ;
+ case COMPARE: code |= instrCOMPARE_SX_SY ; break ;
+ case LOAD : code |= instrLOAD_SX_SY ; break ;
+ case OR : code |= instrOR_SX_SY ; break ;
+ case SUB : code |= instrSUB_SX_SY ; break ;
+ case SUBCY : code |= instrSUBCY_SX_SY ; break ;
+ case TEST : code |= instrTEST_SX_SY ; break ;
+ case XOR : code |= instrXOR_SX_SY ; break ;
+ default : error( line, "Unknown instruction" ) ; return FALSE ;
+ }
+ }
+ }
+ }
+ }
+
+ // Check if there's is rubbish at the end of the line
+ if ( sourceLine.isColumn( maxColumn + offset ) ) {
+ sprintf( err_desc, "'%s' found at end of instruction", sourceLine.getColumn( maxColumn + offset ).c_str() ) ;
+ error( line, err_desc ) ;
+ return FALSE ;
+ }
+
+ // Finally
+ m_code->setInstruction( address, code, line ) ;
+
+ return TRUE ;
+}
+
+
+bool CAssembler::exportVHDL( string templateFile, string outputDir, string entityName )
+{
+ int addr, i, j, k, l, n ;
+ unsigned char INIT[ 32 ][ 64 ] ; /* 32 * 64 = 2048 bytes */
+ unsigned char INITP[ 32 ][ 8 ] ; /* 32 * 8 = 256 bytes (Parity Table)*/
+ unsigned int d ; /* 2304 Bytes Total = (18b * 1024 ) / 8 (1 instr = 18 bits )*/
+
+ CInstruction *instr ;
+
+ for ( i = 0 ; i < 32 ; i++ )
+ for( j = 0 ; j < 32 ; j++ )
+ INIT[ i ][ j ] = 0 ;
+
+ for ( i = 0 ; i < 32 ; i++ )
+ for ( j = 0 ; j < 8 ; j++ )
+ INITP[ i ][ j ] = 0 ;
+
+ /* Build up BRAM in memory */
+ for ( addr = i = j = k = l = 0, n = 0 ; addr < 1024 ; addr++ ) {
+ instr = m_code->getInstruction( addr ) ;
+
+ if ( instr == NULL ) d = 0 ;
+ else d = instr->getHexCode() ;
+
+
+ INIT[ i++ ][ j ] = d ; // instruction( 15 downto 0 )
+ INIT[ i++ ][ j ] = d >> 8;
+
+ INITP[ k ][ l ] |= ( ( d >> 16 ) & 0x3 ) << n ; // instruction( 17 downto 16 ) ;
+ n += 2 ;
+
+ if ( n >= 8 ) {
+ n = 0 ;
+ k++ ;
+ if ( k >= 32 ) {
+ l++ ;
+ k = 0 ;
+ }
+ }
+
+ if ( i >= 32 ) {
+ i = 0 ;
+ j++ ;
+ }
+ }
+
+ FILE * infile = fopen( templateFile.c_str(), "r" ) ;
+ if ( infile == NULL ) {
+ error( NO_LINE_NR, string( "Unable to open VHDL template file '" + templateFile + "'" ).c_str() ) ;
+ return FALSE ;
+ }
+
+ string exportFile = outputDir + "/" + entityName + ".vhd" ;
+ FILE * outfile = fopen( exportFile.c_str(), "w" ) ;
+ if ( outfile == NULL ) {
+ error( NO_LINE_NR , string( "Unable to open VHDL template file '%s'" + exportFile + ".vhd").c_str() ) ;
+ return FALSE ;
+ }
+
+ bool store = false, copy = false;
+ char varname[ 64 ] ;
+ int p = 0 ;
+ int line, c ;
+ while ( ( c = fgetc( infile ) ) != EOF ) {
+ if ( store && p < 64 )
+ varname[ p++ ] = c ;
+
+ if ( c == '{' ) {
+ store = true ;
+ p = 0 ;
+ }
+
+ if ( !store && copy )
+ fputc( c, outfile ) ;
+
+ if ( c == '}' ) {
+ store = false ;
+ if ( p > 0 )
+ varname[ p - 1 ] = '\0' ;
+ else
+ varname[ 0 ] = '\0' ;
+ if ( strncmp( "INIT_", varname, 5 ) == 0 ) {
+ sscanf( varname, "INIT_%02X", &line ) ;
+ if ( line >= 0 && line < 64 ) {
+ for( j = 31 ; j >= 0 ; j-- )
+ fprintf( outfile, "%02X", INIT[ j ][ line ] ) ;
+ }
+ } else if ( strncmp( "INITP_", varname, 6 ) == 0 ) {
+ sscanf( varname, "INITP_%02X", &line ) ;
+ if ( line >= 0 && line < 8 )
+ for( j = 31 ; j >= 0 ; j-- )
+ fprintf( outfile, "%02X", INITP[ j ][ line ] ) ;
+ } else if ( strcmp( "name", varname ) == 0 ) {
+ fprintf( outfile, entityName.c_str() ) ;
+ } else if ( strcmp( "begin template", varname ) == 0 ) {
+ copy = true ;
+ }
+ }
+ }
+
+ fclose( infile ) ;
+ fclose( outfile ) ;
+
+ return TRUE ;
+}
+
+bool CAssembler::exportHEX( string filename, bool mem )
+{
+ FILE * file = fopen( filename.c_str(), "w" ) ;
+ if ( file == NULL ) {
+ error( NO_LINE_NR , string( "Unable to write to file '" + filename + "'").c_str() ) ;
+ return FALSE ;
+ }
+
+ CInstruction * instr ;
+ uint32_t d ;
+ uint32_t addr ;
+
+ /* A mem file requires the @ sign */
+ if ( mem )
+ fprintf( file, "@0\r\n" ) ;
+
+ for ( addr = 0 ; addr < 1024 ; addr++ ) {
+ instr = m_code->getInstruction( addr ) ;
+
+ if ( instr == NULL ) d = 0 ;
+ else d = instr->getHexCode() ;
+
+ fprintf( file, "%05X\r\n", d ) ;
+ }
+
+ fclose( file ) ;
+
+ return TRUE ;
+}
+
+
+bool CAssembler::createOpcodes()
+{
+ list<CSourceLine*>::iterator it ;
+ int columnOffset ;
+ bool ret = TRUE ;
+
+ for ( it = m_source.begin() ; it != m_source.end() ; it++ ) {
+ if ( (*it)->m_type == CSourceLine::stNamereg ||
+ (*it)->m_type == CSourceLine::stConstant ||
+ (*it)->m_type == CSourceLine::stAddress )
+ continue ;
+
+ if ( (*it)->m_type == CSourceLine::stLabel )
+ columnOffset = 2 ;
+ else
+ columnOffset = 0 ;
+
+ if ( !(*it)->isColumn( columnOffset + 0 ) ) // just a label
+ continue ;
+
+ int instr = getInstruction( (*it)->getColumn( columnOffset + 0 ) ) ;
+
+ if ( instr < 0 ) {
+ error( (*it)->m_lineNr, "Unknown instruction" ) ;
+ ret = FALSE ;
+ }
+
+ if ( addInstruction( (instrNumber) instr, **it, columnOffset ) == FALSE )
+ ret = FALSE ;
+
+ }
+ return ret ;
+}
+
+bool CAssembler::assemble( )
+{
+ bool r1, r2 ;
+ if ( loadFile() == FALSE )
+ return FALSE ;
+
+ r1 = buildSymbolTable() ; // Even continue if symbol table failed..
+ r2 = createOpcodes() ; // .. this way we get the most errors/warnings in 1 compile cycle.
+ return ( r1 && r2 ) ;
+
+}
+
+char * CAssembler::getWord( char *s, char *word ) {
+ char *start, *end ;
+
+ *word = '\0' ;
+
+ while ( *s == ' ' || *s == '\t' ) // skip whitespaces
+ s++ ;
+
+ start = s ;
+
+ if ( *start == '\0' || *start == '\r' || *start == '\n' || *start == ';' ) // end of line
+ return NULL ;
+
+ while ( *s != ' ' && *s != '\t' && *s != '\0' && *s != '\r' && *s != '\n' &&
+ *s != ';' && *s != ',' && *s != ':' && *s != '(' && *s != ')' )
+ s++ ;
+
+ end = s ;
+
+ if ( start != end ) {
+ while ( start < end )
+ *word++ = *start++ ;
+ *word = '\0' ;
+ return end ;
+ } else if ( *s == ',' || *s == ':' || *s == '(' || *s == ')' ) {
+ *word++ = *s ;
+ *word = '\0' ;
+ return end + 1 ;
+ } else
+ return NULL ;
+}
+
+CSourceLine * CAssembler::formatLine( int lineNr, char *s )
+{
+ CSourceLine *sourceLine = new CSourceLine( lineNr ) ;
+ char *next, word[ 256 ] ;
+
+ next = getWord( s, word ) ;
+ if ( word[ 0 ] == '\0' ) { // empty line
+ delete sourceLine ;
+ return NULL ;
+ }
+
+ do {
+ sourceLine->addColumn( word ) ;
+ next = getWord( next, word ) ;
+ if ( word[ 0 ] == '\0' )
+ break ;
+ } while ( next != NULL ) ;
+
+ return sourceLine ;
+}
+
+bool CAssembler::loadFile()
+{
+ FILE *f ;
+
+ f = fopen( m_filename.c_str(), "r" ) ;
+
+ if ( f == NULL ) {
+ string str = "Unable to load file '" + m_filename + "'";
+ error( NO_LINE_NR, str.c_str() ) ; // No linenumber information
+ return FALSE ;
+ }
+ char buf[ 256 ] ;
+ int linenr = 0 ;
+ while( fgets( buf, sizeof( buf ), f ) ) {
+ CSourceLine *sourceLine = formatLine( linenr++, buf ) ;
+ if ( sourceLine != NULL )
+ m_source.push_back( sourceLine ) ;
+ }
+
+ list<CSourceLine*>::iterator it ;
+
+ for ( it = m_source.begin() ; it != m_source.end() ; it++ ) {
+ cout << "(" << (*it)->m_lineNr << ")" ;
+ int j = 0 ;
+ while ( (*it)->isColumn( j ) )
+ cout << "[" << (*it)->getColumn( j++ ) << "]";
+ cout << "\r\n" ;
+ }
+
+ cout << "File " << m_filename << " succesfully loaded\r\n" ;
+
+ return TRUE ;
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-16 20:02:19 +0000