/* preprocessor directive or macro procedure is preceded
* by a code label.
*/
ret_code WriteCodeLabel( char *line, struct asm_tok tokenarray[] )
/****************************************************************/
{
int oldcnt;
int oldtoken;
char oldchar;
if ( tokenarray[0].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[0].string_ptr ) );
}
/* ensure the listing is written with the FULL source line */
if ( CurrFile[LST] ) LstWrite( LSTTYPE_LABEL, 0, NULL );
/* v2.04: call ParseLine() to parse the "label" part of the line */
oldcnt = Token_Count;
oldtoken = tokenarray[2].token;
oldchar = *tokenarray[2].tokpos;
Token_Count = 2;
tokenarray[2].token = T_FINAL;
*tokenarray[2].tokpos = NULLC;
ParseLine( tokenarray );
if ( Options.preprocessor_stdout == TRUE )
WritePreprocessedLine( line );
Token_Count = oldcnt;
tokenarray[2].token = oldtoken;
*tokenarray[2].tokpos = oldchar;
return( NOT_ERROR );
}
static ret_code SetCurrSeg( int i, struct asm_tok tokenarray[] )
/**************************************************************/
{
struct asym *sym;
sym = SymSearch( tokenarray[0].string_ptr );
DebugMsg1(("SetCurrSeg(%s) sym=%p\n", tokenarray[0].string_ptr, sym));
if ( sym == NULL || sym->state != SYM_SEG ) {
EmitErr( SEG_NOT_DEFINED, tokenarray[0].string_ptr );
return( ERROR );
}
/* v2.04: added */
sym->isdefined = TRUE;
if ( CurrSeg && Options.output_format == OFORMAT_OMF ) {
omf_FlushCurrSeg();
if ( Options.no_comment_data_in_code_records == FALSE )
omf_OutSelect( FALSE );
}
push_seg( (struct dsym *)sym );
if ( ModuleInfo.list )
LstWrite( LSTTYPE_LABEL, 0, NULL );
return( SetOfssize() );
}
void PutMsg( FILE *fp, int severity, int msgnum, va_list args )
/********************************************************************/
{
int i,j;
char *type;
char msgbuf[MAXMSGSIZE];
char buffer[MAX_LINE_LEN];
if( fp != NULL ) {
MsgGet( msgnum, msgbuf );
switch (severity ) {
case 1: type = MsgGetEx( MSG_FATAL_PREFIX ); break;
case 2: type = MsgGetEx( MSG_ERROR_PREFIX ); break;
case 4: type = MsgGetEx( MSG_WARNING_PREFIX ); break;
default: type = NULL; i = 0; break;
}
if ( type )
i = sprintf( buffer, "%s A%4u: ", type, severity * 1000 + msgnum );
i += vsprintf( buffer+i, msgbuf, args );
//buffer[i] = NULLC;
if ( severity && (j = GetCurrSrcPos( msgbuf ))) {
fwrite( msgbuf, 1, j, fp );
} else
j = 0;
fwrite( buffer, 1, i, fp );
fwrite( "\n", 1, 1, fp );
/* if in Pass 1, add the error msg to the listing */
if ( FileInfo.file[LST] &&
severity &&
Parse_Pass == PASS_1 &&
fp == FileInfo.file[ERR] ) {
LstWrite( LSTTYPE_DIRECTIVE, GetCurrOffset(), 0 );
LstPrintf( " %s", buffer );
LstNL();
}
}
}
ret_code EndsDir( int i, struct asm_tok tokenarray[] )
/****************************************************/
{
if( CurrStruct != NULL ) {
return( EndstructDirective( i, tokenarray ) );
}
/* a label must precede ENDS */
if( i != 1 ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
return( ERROR );
}
if ( Parse_Pass != PASS_1 ) {
if ( ModuleInfo.list )
LstWrite( LSTTYPE_LABEL, 0, NULL );
}
if ( CloseSeg( tokenarray[0].string_ptr ) == ERROR )
return( ERROR );
i++;
if ( tokenarray[i].token != T_FINAL ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
}
return( SetOfssize() );
}
/* SizeStr()
* defines a numeric variable which contains size of a string
*/
ret_code SizeStrDir( int i, struct asm_tok tokenarray[] )
/*******************************************************/
{
struct asym *sym;
int sizestr;
DebugMsg1(("SizeStrDir entry\n"));
DebugCmd( sizstrcnt++ );
if ( i != 1 ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
#if 0 /* this is checked in ParseLine() */
if ( tokenarray[0].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[0].string_ptr ) );
}
#endif
if ( tokenarray[2].token != T_STRING || tokenarray[2].string_delim != '<' ) {
return( TextItemError( &tokenarray[2] ) );
}
if ( Token_Count > 3 ) {
DebugMsg(("SizeStrDir: syntax error, name=%s, Token_Count=%u\n", tokenarray[0].string_ptr, Token_Count));
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[3].string_ptr ) );
}
//sizestr = GetLiteralValue( StringBufferEnd, tokenarray[2].string_ptr );
sizestr = tokenarray[2].stringlen;
if ( sym = CreateVariable( tokenarray[0].string_ptr, sizestr ) ) {
DebugMsg1(("SizeStrDir(%s) exit, value=%u\n", tokenarray[0].string_ptr, sizestr));
LstWrite( LSTTYPE_EQUATE, 0, sym );
return( NOT_ERROR );
}
return( ERROR );
}
/* PreprocessLine() is the "preprocessor".
* 1. the line is tokenized with Tokenize(), Token_Count set
* 2. (text) macros are expanded by ExpandLine()
* 3. "preprocessor" directives are executed
*/
int PreprocessLine( char *line, struct asm_tok tokenarray[] )
/***********************************************************/
{
int i;
/* v2.11: GetTextLine() removed - this is now done in ProcessFile() */
/* v2.08: moved here from GetTextLine() */
ModuleInfo.CurrComment = NULL;
/* v2.06: moved here from Tokenize() */
ModuleInfo.line_flags = 0;
/* Token_Count is the number of tokens scanned */
Token_Count = Tokenize( line, 0, tokenarray, TOK_DEFAULT );
#ifdef DEBUG_OUT
cntppl0++;
if ( ModuleInfo.GeneratedCode )
DebugMsg1(("PreprocessLine: >%s<\n", line ));
else
DebugMsg1(("PreprocessLine(%s): >%s< cmt=%s\n", GetTopSrcName(), line, ModuleInfo.CurrComment ? ModuleInfo.CurrComment : "" ));
#endif
#if REMOVECOMENT == 0
if ( Token_Count == 0 && ( CurrIfState == BLOCK_ACTIVE || ModuleInfo.listif ) )
LstWriteSrcLine();
#endif
if ( Token_Count == 0 )
return( 0 );
#ifdef DEBUG_OUT
/* option -np, skip preprocessor? */
if ( Options.skip_preprocessor )
return( Token_Count );
#endif
/* CurrIfState != BLOCK_ACTIVE && Token_Count == 1 | 3 may happen
* if a conditional assembly directive has been detected by Tokenize().
* However, it's important NOT to expand then */
if ( CurrIfState == BLOCK_ACTIVE ) {
if ( ( tokenarray[Token_Count].bytval & TF3_EXPANSION ? ExpandText( line, tokenarray, TRUE ) : ExpandLine( line, tokenarray ) ) < NOT_ERROR )
return( 0 );
}
DebugCmd( cntppl1++ );
i = 0;
if ( Token_Count > 2 && ( tokenarray[1].token == T_COLON || tokenarray[1].token == T_DBL_COLON ) )
i = 2;
/* handle "preprocessor" directives:
* IF, ELSE, ENDIF, ...
* FOR, REPEAT, WHILE, ...
* PURGE
* INCLUDE
* since v2.05, error directives are no longer handled here!
*/
if ( tokenarray[i].token == T_DIRECTIVE &&
tokenarray[i].dirtype <= DRT_INCLUDE ) {
/* if i != 0, then a code label is located before the directive */
if ( i > 1 ) {
if ( ERROR == WriteCodeLabel( line, tokenarray ) )
return( 0 );
}
directive_tab[tokenarray[i].dirtype]( i, tokenarray );
return( 0 );
}
/* handle preprocessor directives which need a label */
if ( tokenarray[0].token == T_ID && tokenarray[1].token == T_DIRECTIVE ) {
struct asym *sym;
switch ( tokenarray[1].dirtype ) {
case DRT_EQU:
/*
* EQU is a special case:
* If an EQU directive defines a text equate
* it MUST be handled HERE and 0 must be returned to the caller.
* This will prevent further processing, nothing will be stored
* if FASTPASS is on.
* Since one cannot decide whether EQU defines a text equate or
* a number before it has scanned its argument, we'll have to
* handle it in ANY case and if it defines a number, the line
* must be stored and, if -EP is set, written to stdout.
*/
if ( sym = CreateConstant( tokenarray ) ) {
if ( sym->state != SYM_TMACRO ) {
#if FASTPASS
if ( StoreState ) FStoreLine( 0 );
#endif
if ( Options.preprocessor_stdout == TRUE )
WritePreprocessedLine( line );
}
/* v2.03: LstWrite() must be called AFTER StoreLine()! */
if ( ModuleInfo.list == TRUE ) {
LstWrite( sym->state == SYM_INTERNAL ? LSTTYPE_EQUATE : LSTTYPE_TMACRO, 0, sym );
}
}
return( 0 );
case DRT_MACRO:
case DRT_CATSTR: /* CATSTR + TEXTEQU directives */
case DRT_SUBSTR:
directive_tab[tokenarray[1].dirtype]( 1, tokenarray );
return( 0 );
}
}
DebugCmd( cntppl2++ );
return( Token_Count );
}
void LstWriteSrcLine( void )
/**************************/
{
LstWrite( LSTTYPE_MACRO, 0, NULL );
}
ret_code SegmentDir( int i, struct asm_tok tokenarray[] )
/*******************************************************/
{
char is_old;
char *token;
int typeidx;
const struct typeinfo *type; /* type of option */
int temp;
int temp2;
uint initstate = 0; /* flags for attribute initialization */
unsigned char oldreadonly; /* readonly value of a defined segment */
//unsigned char oldsegtype;
unsigned char oldOfssize;
char oldalign;
char oldcombine;
uint oldclassidx;
uint_8 oldcharacteristics;
struct dsym *dir;
char *name;
struct asym *sym;
struct expr opndx;
if ( Parse_Pass != PASS_1 )
return( SetCurrSeg( i, tokenarray ) );
if( i != 1 ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
return( ERROR );
}
name = tokenarray[0].string_ptr;
DebugMsg1(("SegmentDir(%s) enter: ModuleInfo.Ofssize=%u, num_seg=%u\n", name, ModuleInfo.Ofssize, ModuleInfo.g.num_segs ));
/* See if the segment is already defined */
sym = SymSearch( name );
if( sym == NULL || sym->state == SYM_UNDEFINED ) {
/* segment is not defined (yet) */
sym = (struct asym *)CreateSegment( (struct dsym *)sym, name, TRUE );
sym->list = TRUE; /* always list segments */
dir = (struct dsym *)sym;
dir->e.seginfo->seg_idx = ++ModuleInfo.g.num_segs;
is_old = FALSE;
/*
* initialize segment with values from the one without suffix
*/
#if COFF_SUPPORT || ELF_SUPPORT
if (Options.output_format == OFORMAT_COFF
#if ELF_SUPPORT
|| Options.output_format == OFORMAT_ELF
#endif
) {
char *p;
if ( p = strchr(sym->name, '$') ) {
char buffer[MAX_ID_LEN+1];
struct dsym *dir2;
memcpy(buffer, sym->name, p - sym->name);
buffer[p - sym->name] = NULLC;
if ((dir2 = (struct dsym *)SymSearch(buffer)) && dir2->sym.state == SYM_SEG) {
dir->e.seginfo->readonly = dir2->e.seginfo->readonly;
dir->e.seginfo->segtype = dir2->e.seginfo->segtype;
dir->e.seginfo->Ofssize = dir2->e.seginfo->Ofssize;
dir->e.seginfo->alignment= dir2->e.seginfo->alignment;
dir->e.seginfo->characteristics = dir2->e.seginfo->characteristics;
dir->e.seginfo->combine = dir2->e.seginfo->combine;
dir->e.seginfo->class_name_idx = dir2->e.seginfo->class_name_idx;
}
}
}
#endif
} else if ( sym->state == SYM_SEG ) {
/* segment already defined */
dir = (struct dsym *)sym;
is_old = TRUE;
oldreadonly = dir->e.seginfo->readonly;
//oldsegtype = dir->e.seginfo->segtype;
oldOfssize = dir->e.seginfo->Ofssize;
oldalign = dir->e.seginfo->alignment;
oldcharacteristics = dir->e.seginfo->characteristics;
oldcombine = dir->e.seginfo->combine;
oldclassidx = dir->e.seginfo->class_name_idx;
if( dir->e.seginfo->lname_idx == 0 ) {
/* segment was mentioned in a group statement, but not really set up */
is_old = FALSE;
/* the segment list is to be sorted.
* So unlink the segment and add it at the end.
*/
UnlinkSeg( dir );
dir->e.seginfo->seg_idx = ++ModuleInfo.g.num_segs;
dir->next = NULL;
if ( SymTables[TAB_SEG].head == NULL )
SymTables[TAB_SEG].head = SymTables[TAB_SEG].tail = dir;
else {
SymTables[TAB_SEG].tail->next = dir;
SymTables[TAB_SEG].tail = dir;
}
}
} else {
/* symbol is different kind, error */
DebugMsg(("SegmentDir(%s): symbol redefinition\n", name ));
EmitErr( SYMBOL_REDEFINITION, name );
return( ERROR );
}
i++; /* go past SEGMENT */
for( ; i < Token_Count; i++ ) {
token = tokenarray[i].string_ptr;
DebugMsg1(("SegmentDir(%s): i=%u, string=%s token=%X\n", name, i, token, tokenarray[i].token ));
if( tokenarray[i].token == T_STRING ) {
/* the class name - the only token which is of type STRING */
/* string must be delimited by [double]quotes */
if ( tokenarray[i].string_delim != '"' &&
tokenarray[i].string_delim != '\'' ) {
EmitErr( SYNTAX_ERROR_EX, token );
continue;
}
/* remove the quote delimiters */
token++;
*(token+tokenarray[i].stringlen) = NULLC;
SetSegmentClass( &dir->sym, token );
DebugMsg1(("SegmentDir(%s): class found: %s\n", name, token ));
continue;
}
/* check the rest of segment attributes.
*/
typeidx = FindToken( token, SegAttrToken, sizeof( SegAttrToken )/sizeof( SegAttrToken[0] ) );
if( typeidx < 0 ) {
EmitErr( UNKNOWN_SEGMENT_ATTRIBUTE, token );
continue;
}
type = &SegAttrValue[typeidx];
/* initstate is used to check if any field is already
* initialized
*/
if( initstate & INIT_EXCL_MASK & type->init ) {
EmitErr( SEGMENT_ATTRIBUTE_DEFINED_ALREADY, token );
continue;
} else {
initstate |= type->init; /* mark it initialized */
}
switch ( type->init ) {
case INIT_ATTR:
dir->e.seginfo->readonly = TRUE;
break;
case INIT_ALIGN:
DebugMsg1(("SegmentDir(%s): align attribute found\n", name ));
dir->e.seginfo->alignment = type->value;
break;
case INIT_ALIGN_PARAM:
DebugMsg1(("SegmentDir(%s): ALIGN() found\n", name ));
if ( Options.output_format == OFORMAT_OMF ) {
EmitErr( NOT_SUPPORTED_WITH_OMF_FORMAT, tokenarray[i].string_ptr );
i = Token_Count; /* stop further parsing of this line */
break;
}
i++;
if ( tokenarray[i].token != T_OP_BRACKET ) {
EmitErr( EXPECTED, "(" );
break;
}
i++;
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 ) == ERROR )
break;
if ( tokenarray[i].token != T_CL_BRACKET ) {
EmitErr( EXPECTED, ")" );
break;
}
if ( opndx.kind != EXPR_CONST ) {
EmitError( CONSTANT_EXPECTED );
break;
}
/*
COFF allows alignment values
1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192
*/
for( temp = 1, temp2 = 0; temp < opndx.value && temp < 8192 ; temp <<= 1, temp2++ );
if( temp != opndx.value ) {
EmitError( POWER_OF_2 );
}
dir->e.seginfo->alignment = temp2;
break;
case INIT_COMBINE:
DebugMsg1(("SegmentDir(%s): combine attribute found\n", name ));
dir->e.seginfo->combine = type->value;
break;
case INIT_COMBINE_AT:
DebugMsg1(("SegmentDir(%s): AT found\n", name ));
dir->e.seginfo->combine = type->value;
/* v2.05: always use MAX_SEGALIGNMENT */
//dir->e.seginfo->alignment = -1;
dir->e.seginfo->alignment = MAX_SEGALIGNMENT;
i++;
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 ) != ERROR ) {
if ( opndx.kind == EXPR_CONST ) {
dir->e.seginfo->abs_frame = opndx.value;
dir->e.seginfo->abs_offset = 0;
} else {
EmitError( CONSTANT_EXPECTED );
}
}
break;
#if COMDATSUPP
case INIT_COMBINE_COMDAT:
DebugMsg1(("SegmentDir(%s): COMDAT found\n", name ));
if ( Options.output_format != OFORMAT_COFF ) {
EmitErr( NOT_SUPPORTED_WITH_CURR_FORMAT, tokenarray[i].string_ptr );
i = Token_Count; /* stop further parsing of this line */
break;
}
i++;
if ( tokenarray[i].token != T_OP_BRACKET ) {
EmitErr( EXPECTED, "(" );
break;
}
i++;
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 ) == ERROR )
break;
if ( opndx.kind != EXPR_CONST ) {
EmitError( CONSTANT_EXPECTED );
i = Token_Count; /* stop further parsing of this line */
break;
}
if ( opndx.value < 1 || opndx.value > 6 ) {
EmitErr( VALUE_NOT_WITHIN_ALLOWED_RANGE, "1-6" );
} else {
/* if value is IMAGE_COMDAT_SELECT_ASSOCIATIVE,
* get the associated segment name argument.
*/
if ( opndx.value == 5 ) {
struct asym *sym2;
if ( tokenarray[i].token != T_COMMA ) {
EmitError( EXPECTING_COMMA );
i = Token_Count; /* stop further parsing of this line */
break;
}
i++;
if ( tokenarray[i].token != T_ID ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
i = Token_Count; /* stop further parsing of this line */
break;
}
/* associated segment must be COMDAT, but not associative */
sym2 = SymSearch( tokenarray[i].string_ptr );
if ( sym2 == NULL ||
sym2->state != SYM_SEG ||
((struct dsym *)sym2)->e.seginfo->comdat_selection == 0 ||
((struct dsym *)sym2)->e.seginfo->comdat_selection == 5 )
EmitErr( INVALID_ASSOCIATED_SEGMENT, tokenarray[i].string_ptr );
else
dir->e.seginfo->comdat_number = ((struct dsym *)sym2)->e.seginfo->seg_idx;
i++;
}
}
if ( tokenarray[i].token != T_CL_BRACKET ) {
EmitErr( EXPECTED, ")" );
break;
}
dir->e.seginfo->comdat_selection = opndx.value;
dir->e.seginfo->combine = type->value;
break;
#endif
case INIT_OFSSIZE:
case INIT_OFSSIZE_FLAT:
/* v2.07: check for compatible cpu mode */
if ( type->value == USE32 && ( ( ModuleInfo.curr_cpu & P_CPU_MASK ) < P_386 )
#if AMD64_SUPPORT
|| type->value == USE64 && ( ( ModuleInfo.curr_cpu & P_CPU_MASK ) < P_64 )
#endif
) {
EmitError( INSTRUCTION_OR_REGISTER_NOT_ACCEPTED_IN_CURRENT_CPU_MODE );
break;
}
if ( type->init == INIT_OFSSIZE_FLAT ) {
DefineFlatGroup();
#if AMD64_SUPPORT
dir->e.seginfo->Ofssize = ModuleInfo.defOfssize;
#else
dir->e.seginfo->Ofssize = USE32;
#endif
/* put the segment into the FLAT group.
* this is not quite Masm-compatible, because trying to put
* the segment into another group will cause an error.
*/
dir->e.seginfo->group = &ModuleInfo.flat_grp->sym;
} else
dir->e.seginfo->Ofssize = type->value;
break;
#if COFF_SUPPORT || ELF_SUPPORT
case INIT_CHAR_INFO:
dir->e.seginfo->info = TRUE;
break;
case INIT_CHAR:
DebugMsg1(("SegmentDir(%s): characteristics found\n", name ));
; /* characteristics are restricted to COFF/ELF */
if ( Options.output_format == OFORMAT_OMF || Options.output_format == OFORMAT_BIN ) {
EmitErr( NOT_SUPPORTED_WITH_CURR_FORMAT, tokenarray[i].string_ptr );
} else
dir->e.seginfo->characteristics |= type->value;
break;
case INIT_ALIAS:
DebugMsg1(("SegmentDir(%s): ALIAS found\n", name ));
if ( Options.output_format != OFORMAT_COFF &&
Options.output_format != OFORMAT_ELF ) {
EmitErr( NOT_SUPPORTED_WITH_CURR_FORMAT, tokenarray[i].string_ptr );
i = Token_Count; /* stop further parsing of this line */
break;
}
i++;
if ( tokenarray[i].token != T_OP_BRACKET ) {
EmitErr( EXPECTED, "(" );
break;
}
i++;
if ( tokenarray[i].token != T_STRING ||
( tokenarray[i].string_delim != '"' &&
tokenarray[i].string_delim != '\'' ) ) {
EmitErr( SYNTAX_ERROR_EX, token );
i = Token_Count; /* stop further parsing of this line */
break;
}
temp = i;
i++;
if ( tokenarray[i].token != T_CL_BRACKET ) {
EmitErr( EXPECTED, ")" );
break;
}
dir->e.seginfo->aliasname = LclAlloc( tokenarray[temp].stringlen );
memcpy( dir->e.seginfo->aliasname, tokenarray[temp].string_ptr+1, tokenarray[temp].stringlen );
*(dir->e.seginfo->aliasname+tokenarray[temp].stringlen) = NULLC;
break;
#endif
#ifdef DEBUG_OUT
default: /* shouldn't happen */
myassert( 0 );
break;
#endif
}
} /* end for */
/* make a guess about the segment's type */
if( dir->e.seginfo->segtype != SEGTYPE_CODE ) {
enum seg_type res;
token = GetLname( dir->e.seginfo->class_name_idx );
res = TypeFromClassName( dir, token );
if( res != SEGTYPE_UNDEF ) {
dir->e.seginfo->segtype = res;
}
#if 0 /* v2.03: removed */
else {
res = TypeFromSegmentName( name );
dir->e.seginfo->segtype = res;
}
#endif
}
if( is_old ) {
int txt = 0;
/* Check if new definition is different from previous one */
// oldobj = dir->e.seginfo->segrec;
if( oldreadonly != dir->e.seginfo->readonly )
txt = TXT_READONLY;
else if ( oldalign != dir->e.seginfo->alignment )
txt = TXT_ALIGNMENT;
else if ( oldcombine != dir->e.seginfo->combine )
txt = TXT_COMBINE;
else if ( oldOfssize != dir->e.seginfo->Ofssize )
txt = TXT_SEG_WORD_SIZE;
else if ( oldclassidx != dir->e.seginfo->class_name_idx )
txt = TXT_CLASS; /* Masm warns only! */
else if ( oldcharacteristics != dir->e.seginfo->characteristics )
txt = TXT_CHARACTERISTICS;
if ( txt ) {
EmitErr( SEGDEF_CHANGED, dir->sym.name, MsgGetEx( txt ) );
//return( ERROR ); /* v2: display error, but continue */
}
} else {
/* A new definition */
sym = &dir->sym;
sym->isdefined = TRUE;
sym->segment = sym;
sym->offset = 0;
if( dir->e.seginfo->lname_idx == 0 ) {
dir->e.seginfo->lname_idx = ++LnamesIdx;
AddLnameData( sym );
}
}
push_seg( dir ); /* set CurrSeg */
if ( ModuleInfo.list )
LstWrite( LSTTYPE_LABEL, 0, NULL );
return( SetOfssize() );
}
ret_code HllEndDef( int i )
/*************************/
{
//struct asm_sym *sym;
struct hll_list *hll;
int cmd = AsmBuffer[i]->value;
char buffer[MAX_ID_LEN+1+64];
DebugMsg(("HllEndDef(%s) enter\n", AsmBuffer[i]->string_ptr ));
if ( HllStack == NULL ) {
DebugMsg(("HllEndDef: hll stack is empty\n"));
AsmError( DIRECTIVE_MUST_BE_IN_CONTROL_BLOCK );
return( ERROR );
}
hll = HllStack;
HllStack = hll->next;
PushLineQueue();
switch (cmd) {
case T_DOT_ENDIF:
if ( hll->cmd != HLL_IF ) {
DebugMsg(("HllEndDef no .IF on the hll stack\n"));
AsmErr( BLOCK_NESTING_ERROR, AsmBuffer[i]->string_ptr );
return( ERROR );
}
/* if a test label isn't created yet, create it */
if ( hll->symtest ) {
MakeLabel( buffer, hll->symtest );
AddLineQueue( buffer );
}
/* create the exit label if it exists */
if ( hll->symexit ) {
MakeLabel( buffer, hll->symexit );
AddLineQueue( buffer );
}
i++;
break;
case T_DOT_ENDW:
if ( hll->cmd != HLL_WHILE ) {
DebugMsg(("HllEndDef no .WHILE on the hll stack\n"));
AsmErr( BLOCK_NESTING_ERROR, AsmBuffer[i]->string_ptr );
return( ERROR );
}
/* create test label */
if ( hll->symtest ) {
MakeLabel( buffer, hll->symtest );
DebugMsg(("HllEndDef: created: %s\n", buffer));
AddLineQueue( buffer );
}
HllPushTestLines( hll );
MakeLabel( buffer, hll->symexit );
AddLineQueue( buffer );
i++;
break;
case T_DOT_UNTILCXZ:
if ( hll->cmd != HLL_REPEAT ) {
DebugMsg(("HllEndDef no .REPEAT on the hll stack\n"));
AsmErr( BLOCK_NESTING_ERROR, AsmBuffer[i]->string_ptr );
return( ERROR );
}
MakeLabel( buffer, hll->symtest );
AddLineQueue( buffer );
i++;
/* read in optional (simple) expression */
if ( AsmBuffer[i]->token != T_FINAL ) {
if ( ERROR == EvaluateHllExpression( hll, &i, LABELFIRST, FALSE ) ) {
return( ERROR );
}
if ( HllCheckTestLines(hll) == ERROR ) {
AsmError( EXPR_TOO_COMPLEX_FOR_UNTILCXZ );
return( ERROR );
}
/* write condition lines */
HllPushTestLines( hll );
} else {
sprintf( buffer, " loop %s", hll->symfirst );
AddLineQueue( buffer );
}
MakeLabel( buffer, hll->symexit );
AddLineQueue( buffer );
break;
case T_DOT_UNTIL:
if ( hll->cmd != HLL_REPEAT ) {
DebugMsg(("HllEndDef no .REPEAT on the hll stack\n"));
AsmErr( BLOCK_NESTING_ERROR, AsmBuffer[i]->string_ptr );
return( ERROR );
}
MakeLabel( buffer, hll->symtest );
AddLineQueue( buffer );
i++;
/* read in (optional) expression */
/* if expression is missing, just generate nothing */
if ( AsmBuffer[i]->token != T_FINAL ) {
if ( ERROR == EvaluateHllExpression( hll, &i, LABELFIRST, FALSE ) ) {
return( ERROR );
}
/* write condition lines */
HllPushTestLines( hll );
}
#if 0
sprintf( buffer, " jmp %s", hll->symfirst );
AddLineQueue( buffer );
#endif
MakeLabel( buffer, hll->symexit );
AddLineQueue( buffer );
break;
}
AsmFree( hll->symfirst );
AsmFree( hll->symtest );
AsmFree( hll->symexit );
AsmFree( hll->condlines );
AsmFree( hll );
if ( AsmBuffer[i]->token != T_FINAL ) {
AsmErr( SYNTAX_ERROR_EX, AsmBuffer[i]->string_ptr );
return( ERROR );
}
if ( ModuleInfo.list )
LstWrite( LSTTYPE_DIRECTIVE, GetCurrOffset(), NULL );
if ( line_queue )
RunLineQueue();
return( NOT_ERROR );
}
ret_code HllStartDef( int i )
/***************************/
{
struct hll_list *hll;
int cmd = AsmBuffer[i]->value;
char buffer[MAX_ID_LEN+1+64];
DebugMsg(("HllStartDef(%u [=%s]) enter\n", i, AsmBuffer[i]->string_ptr ));
#if FASTPASS
/* make sure the directive is stored */
if ( StoreState == FALSE && Parse_Pass == PASS_1 ) {
SaveState();
}
#endif
switch (cmd) {
case T_DOT_REPEAT:
if ( AsmBuffer[i+1]->token != T_FINAL ) {
DebugMsg(("HllStartDef: unexpected tokens behind .REPEAT\n" ));
AsmError( SYNTAX_ERROR );
return( ERROR );
}
break;
case T_DOT_IF:
case T_DOT_WHILE:
#if 0 /* Masm allows a missing expression! */
if ( AsmBuffer[i+1]->token == T_FINAL ) {
AsmError( SYNTAX_ERROR );
return( ERROR );
}
#endif
break;
}
hll = AsmAlloc( sizeof(hll_list) );
hll->cmd = HLL_UNDEF;
/* create labels which are always needed */
/* for .IF -.ENDIF without .ELSE no symexit label is needed. */
hll->symfirst = NULL;
hll->symexit = NULL;
hll->symtest = MakeAnonymousLabel();
hll->condlines = NULL;
// structure for .IF .ELSE .ENDIF
// cond jump to symtest
// ...
// jmp symexit
// symtest:
// ...
// symexit:
// structure for .IF .ELSEIF
// cond jump to symtest
// ...
// jmp symexit
// symtest:
// cond jump to (new) symtest
// ...
// jmp symexit
// symtest:
// ...
// structure for .WHILE and .REPEAT:
// jmp symtest (for .WHILE only)
// symfirst:
// ...
// symtest: (jumped to by .continue)
// test end condition, cond jump to symfirst
// symexit: (jumped to by .break)
PushLineQueue();
switch (cmd) {
case T_DOT_IF:
hll->cmd = HLL_IF;
/* get the C-style expression, convert to ASM code lines */
i++;
if ( ERROR == EvaluateHllExpression( hll, &i, LABELTEST, FALSE ) ) {
return( ERROR );
}
HllPushTestLines( hll );
#if 1
/* if no lines have been created, the symtest label isn't needed */
if ( line_queue == NULL ) {
AsmFree( hll->symtest );
hll->symtest = NULL;
}
#endif
break;
case T_DOT_WHILE:
case T_DOT_REPEAT:
/* create the label to loop start */
hll->symfirst = MakeAnonymousLabel();
hll->symexit = MakeAnonymousLabel();
if ( cmd == T_DOT_WHILE ) {
i++;
hll->cmd = HLL_WHILE;
if ( AsmBuffer[i]->token != T_FINAL ) {
if ( ERROR == EvaluateHllExpression( hll, &i, LABELFIRST, TRUE ) ) {
return( ERROR );
}
} else
hll->condlines = "";
/* create a jump to second label */
/* optimisation: if second label is just a jump, dont jump! */
if ( hll->condlines && _memicmp(hll->condlines, "jmp", 3) ) {
sprintf( buffer, " jmp %s", hll->symtest );
AddLineQueue( buffer );
} else {
AsmFree( hll->symtest );
hll->symtest = NULL;
}
} else {
i++;
hll->cmd = HLL_REPEAT;
}
MakeLabel( buffer, hll->symfirst );
AddLineQueue( buffer );
break;
}
if ( AsmBuffer[i]->token != T_FINAL ) {
DebugMsg(("HllStartDef: unexpected token %u [%s]\n", AsmBuffer[i]->token, AsmBuffer[i]->string_ptr ));
AsmErr( SYNTAX_ERROR_EX, AsmBuffer[i]->string_ptr );
return( ERROR );
}
hll->next = HllStack;
HllStack = hll;
if ( ModuleInfo.list )
LstWrite( LSTTYPE_DIRECTIVE, GetCurrOffset(), NULL );
if ( line_queue ) /* might be NULL! (".if 1") */
RunLineQueue();
return( NOT_ERROR );
}
ret_code HllExitDef( int i )
/**************************/
{
//int level;
//struct asm_sym *sym;
struct hll_list *hll;
char *savedlines;
hll_cmd savedcmd;
int cmd = AsmBuffer[i]->value;
char buffer[MAX_ID_LEN+1+64];
DebugMsg(("HllExitDef(%s) enter\n", AsmBuffer[i]->string_ptr ));
hll = HllStack;
if ( hll == NULL ) {
DebugMsg(("HllExitDef stack error\n"));
AsmError( DIRECTIVE_MUST_BE_IN_CONTROL_BLOCK );
return( ERROR );
}
PushLineQueue();
switch (cmd) {
case T_DOT_ELSE:
case T_DOT_ELSEIF:
if ( hll->cmd != HLL_IF ) {
DebugMsg(("HllExitDef(%s): symtest=%X\n", AsmBuffer[i]->string_ptr, hll->symtest));
AsmErr( BLOCK_NESTING_ERROR, AsmBuffer[i]->string_ptr );
return( ERROR );
}
/* the "symexit" label is only needed if an .ELSE branch exists.
That's why it is created delayed.
*/
if ( hll->symexit == NULL)
hll->symexit = MakeAnonymousLabel();
sprintf( buffer," jmp %s", hll->symexit );
AddLineQueue( buffer );
if ( hll->symtest ) {
MakeLabel( buffer, hll->symtest );
AddLineQueue( buffer );
AsmFree( hll->symtest );
hll->symtest = NULL;
}
i++;
if (cmd == T_DOT_ELSEIF) {
/* create new symtest label */
hll->symtest = MakeAnonymousLabel();
if ( ERROR == EvaluateHllExpression( hll, &i, LABELTEST, FALSE ) ) {
return( ERROR );
}
HllPushTestLines( hll );
}
break;
case T_DOT_BREAK:
case T_DOT_CONTINUE:
for ( ; hll && hll->cmd == HLL_IF; hll = hll->next );
if ( hll == NULL ) {
AsmError( DIRECTIVE_MUST_BE_IN_CONTROL_BLOCK );
return( ERROR );
}
/* .BREAK .IF ... or .CONTINUE .IF ? */
i++;
if ( AsmBuffer[i]->token != T_FINAL ) {
if ( AsmBuffer[i]->token == T_DIRECTIVE && AsmBuffer[i]->value == T_DOT_IF ) {
savedlines = hll->condlines;
savedcmd = hll->cmd;
hll->condlines = NULL;
hll->cmd = HLL_BREAK;
i++;
if ( cmd == T_DOT_BREAK ) {
if ( ERROR == EvaluateHllExpression( hll, &i, LABELEXIT, TRUE ) ) {
return( ERROR );
}
} else { /* T_DOT_CONTINUE */
if ( ERROR == EvaluateHllExpression( hll, &i, LABELTEST, TRUE ) ) {
return( ERROR );
}
}
HllPushTestLines( hll );
AsmFree( hll->condlines );
hll->condlines = savedlines;
hll->cmd = savedcmd;
}
} else {
if ( cmd == T_DOT_BREAK ) {
sprintf( buffer," jmp %s", hll->symexit );
} else {
if ( hll->symtest )
sprintf( buffer," jmp %s", hll->symtest );
else
sprintf( buffer," jmp %s", hll->symfirst );
}
AddLineQueue( buffer );
}
break;
}
if ( AsmBuffer[i]->token != T_FINAL ) {
AsmErr( SYNTAX_ERROR_EX, AsmBuffer[i]->string_ptr );
return( ERROR );
}
if ( ModuleInfo.list )
LstWrite( LSTTYPE_DIRECTIVE, GetCurrOffset(), NULL );
RunLineQueue();
return( NOT_ERROR );
}
ret_code CatStrDir( int i, struct asm_tok tokenarray[] )
/******************************************************/
{
struct asym *sym;
int count;
char *p;
/* struct expr opndx; */
DebugMsg1(("CatStrDir(%u) enter\n", i ));
DebugCmd( catstrcnt++ );
#if 0 /* can't happen */
/* syntax must be <id> CATSTR textitem[,textitem,...] */
if ( i != 1 ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
if ( tokenarray[0].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[0].string_ptr ) );
}
#endif
i++; /* go past CATSTR/TEXTEQU */
/* v2.08: don't copy to temp buffer */
//*StringBufferEnd = NULLC;
/* check correct syntax and length of items */
for ( count = 0; i < Token_Count; ) {
DebugMsg1(("CatStrDir(%s): item[%u]=%s delim=0x%x\n", tokenarray[0].string_ptr, i, tokenarray[i].string_ptr, tokenarray[i].string_delim ));
if ( tokenarray[i].token != T_STRING || tokenarray[i].string_delim != '<' ) {
DebugMsg(("CatStrDir: error, not a <>-literal: %s\n", tokenarray[i].tokpos ));
return( TextItemError( &tokenarray[i] ) );
}
/* v2.08: using tokenarray.stringlen is not quite correct, since some chars
* are stored in 2 bytes (!) */
if ( ( count + tokenarray[i].stringlen ) >= MAX_LINE_LEN ) {
DebugMsg(("CatStrDir: error, literal too long: %u + %u >= %u\n", count, tokenarray[i].stringlen, MAX_LINE_LEN ));
return( EmitError( STRING_OR_TEXT_LITERAL_TOO_LONG ) );
}
/* v2.08: don't copy to temp buffer */
//strcpy( StringBufferEnd + count, tokenarray[i].string_ptr );
count = count + tokenarray[i].stringlen;
i++;
if ( ( tokenarray[i].token != T_COMMA ) &&
( tokenarray[i].token != T_FINAL ) ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
i++;
}
sym = SymSearch( tokenarray[0].string_ptr );
if ( sym == NULL ) {
sym = SymCreate( tokenarray[0].string_ptr );
DebugMsg1(( "CatStrDir: new symbol %s created\n", sym->name));
} else if( sym->state == SYM_UNDEFINED ) {
/* v2.01: symbol has been used already. Using
* a textmacro before it has been defined is
* somewhat problematic.
*/
sym_remove_table( &SymTables[TAB_UNDEF], (struct dsym *)sym );
#if FASTPASS
SkipSavedState(); /* further passes must be FULL! */
#endif
EmitWarn( 2, TEXT_MACRO_USED_PRIOR_TO_DEFINITION, sym->name );
} else if( sym->state != SYM_TMACRO ) {
/* it is defined as something else, get out */
DebugMsg(( "CatStrDir(%s) exit, symbol redefinition\n", sym->name));
return( EmitErr( SYMBOL_REDEFINITION, sym->name ) );
}
sym->state = SYM_TMACRO;
sym->isdefined = TRUE;
#if FASTMEM==0
if ( sym->string_ptr )
LclFree( sym->string_ptr );
sym->string_ptr = (char *)LclAlloc( count + 1 );
#else
/* v2.08: reuse string space if fastmem is on */
if ( sym->total_size < ( count+1 ) ) {
LclFree( sym->string_ptr ); /* is a noop if fastmem is on */
sym->string_ptr = (char *)LclAlloc( count + 1 );
sym->total_size = count + 1;
}
#endif
/* v2.08: don't use temp buffer */
//memcpy( sym->string_ptr, StringBufferEnd, count + 1 );
for ( i = 2, p = sym->string_ptr; i < Token_Count; i += 2 ) {
memcpy( p, tokenarray[i].string_ptr, tokenarray[i].stringlen );
p += tokenarray[i].stringlen;
}
*p = NULLC;
DebugMsg1(("CatStrDir(%s) (new) value: >%s<\n", sym->name, sym->string_ptr ));
if ( ModuleInfo.list )
LstWrite( LSTTYPE_TMACRO, 0, sym );
return( NOT_ERROR );
}
/* InStr()
* defines a numeric variable which contains position of substring.
* syntax:
* name INSTR [pos,]string, substr
*/
ret_code InStrDir( int i, struct asm_tok tokenarray[] )
/*****************************************************/
{
struct asym *sym;
int sizestr;
int j;
/* int commas; */
char *src;
char *p;
char *q;
char *string1;
struct expr opndx;
int start = 1;
int strpos;
DebugMsg1(("InStrDir entry\n"));
DebugCmd( instrcnt++ );
if ( i != 1) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
#if 0 /* this is checked in ParseLine() */
if ( tokenarray[0].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[0].string_ptr ) );
}
#endif
i++; /* go past INSTR */
if ( tokenarray[i].token != T_STRING || tokenarray[i].string_delim != '<' ) {
/* v2.11: flag NOUNDEF added - no forward reference accepted */
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, EXPF_NOUNDEF ) == ERROR )
return( ERROR );
if ( opndx.kind != EXPR_CONST ) {
return( EmitError( CONSTANT_EXPECTED ) );
}
start = opndx.value;
if ( start <= 0 ) {
/* v2.05: don't change the value. if it's invalid, the result
* is to be 0. Emit a level 3 warning instead.
*/
//start = 1;
EmitWarn( 3, POSITIVE_VALUE_EXPECTED );
}
if ( tokenarray[i].token != T_COMMA ) {
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
i++; /* skip comma */
}
if ( tokenarray[i].token != T_STRING || tokenarray[i].string_delim != '<' ) {
return( TextItemError( &tokenarray[i] ) );
}
/* to compare the strings, the "visible" format is needed, since
* the possible '!' operators inside the strings is optional and
* must be ignored.
*/
//src = StringBufferEnd;
//sizestr = GetLiteralValue( src, tokenarray[i].string_ptr );
src = tokenarray[i].string_ptr;
sizestr = tokenarray[i].stringlen;
DebugMsg1(("InStrDir: first string >%s< \n", src ));
if ( start > sizestr ) {
return( EmitErr( INDEX_VALUE_PAST_END_OF_STRING, start ) );
}
p = src + start - 1;
i++;
if ( tokenarray[i].token != T_COMMA ) {
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
i++;
if ( tokenarray[i].token != T_STRING || tokenarray[i].string_delim != '<' ) {
return( TextItemError( &tokenarray[i] ) );
}
//q = GetAlignedPointer( src, sizestr );
//j = GetLiteralValue( q, tokenarray[i].string_ptr );
q = tokenarray[i].string_ptr;
j = tokenarray[i].stringlen;
DebugMsg1(("InStrDir: second string >%s< \n", q ));
i++;
if ( tokenarray[i].token != T_FINAL ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
strpos = 0;
/* v2.05: check for start > 0 added */
/* v2.08: check for j > 0 added */
if ( ( start > 0 ) && ( sizestr >= j ) && j && ( string1 = strstr( p, q ) ))
strpos = string1 - src + 1;
if ( sym = CreateVariable( tokenarray[0].string_ptr, strpos ) ) {
DebugMsg1(("InStrDir(%s) exit, value=%u\n", tokenarray[0].string_ptr, strpos));
LstWrite( LSTTYPE_EQUATE, 0, sym );
return ( NOT_ERROR );
}
return( ERROR );
}
/* SubStr()
* defines a text equate.
* syntax: name SUBSTR <string>, pos [, size]
*/
ret_code SubStrDir( int i, struct asm_tok tokenarray[] )
/******************************************************/
{
struct asym *sym;
char *name;
char *p;
//char *newvalue;
int pos;
int size;
int cnt;
bool chksize;
struct expr opndx;
DebugMsg1(("SubStrDir enter\n"));
DebugCmd( substrcnt++ );
/* at least 5 items are needed
* 0 1 2 3 4 5 6
* ID SUBSTR SRC_ID , POS [, LENGTH]
*/
#if 0 /* can't happen */
if ( i != 1 ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
if ( tokenarray[0].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[0].string_ptr ) );
}
#endif
name = tokenarray[0].string_ptr;
i++; /* go past SUBSTR */
/* third item must be a string */
if ( tokenarray[i].token != T_STRING || tokenarray[i].string_delim != '<' ) {
DebugMsg(("SubStrDir: error, no text item\n"));
return( TextItemError( &tokenarray[i] ) );
}
p = tokenarray[i].string_ptr;
cnt = tokenarray[i].stringlen;
i++;
DebugMsg1(("SubStrDir(%s): src=>%s<\n", name, p));
if ( tokenarray[i].token != T_COMMA ) {
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
i++;
/* get pos, must be a numeric value and > 0 */
/* v2.11: flag NOUNDEF added - no forward ref possible */
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, EXPF_NOUNDEF ) == ERROR ) {
DebugMsg(("SubStrDir(%s): invalid pos value\n", name));
return( ERROR );
}
/* v2.04: "string" constant allowed as second argument */
//if ( opndx.kind != EXPR_CONST || opndx.string != NULL ) {
if ( opndx.kind != EXPR_CONST ) {
DebugMsg(("SubStrDir(%s): pos value is not a constant\n", name));
return( EmitError( CONSTANT_EXPECTED ) );
}
/* pos is expected to be 1-based */
pos = opndx.value;
if ( pos <= 0 ) {
return( EmitError( POSITIVE_VALUE_EXPECTED ) );
}
if ( tokenarray[i].token != T_FINAL ) {
if ( tokenarray[i].token != T_COMMA ) {
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
i++;
/* get size, must be a constant */
/* v2.11: flag NOUNDEF added - no forward ref possible */
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, EXPF_NOUNDEF ) == ERROR ) {
DebugMsg(("SubStrDir(%s): invalid size value\n", name));
return( ERROR );
}
/* v2.04: string constant ok */
//if ( opndx.kind != EXPR_CONST || opndx.string != NULL ) {
if ( opndx.kind != EXPR_CONST ) {
DebugMsg(("SubStrDir(%s): size value is not a constant\n", name));
return( EmitError( CONSTANT_EXPECTED ) );
}
size = opndx.value;
if ( tokenarray[i].token != T_FINAL ) {
DebugMsg(("SubStrDir(%s): additional items found\n", name));
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
if ( size < 0 ) {
return( EmitError( COUNT_MUST_BE_POSITIVE_OR_ZERO ) );
}
chksize = TRUE;
} else {
size = -1;
chksize = FALSE;
}
#if 0
cnt = pos;
/* position p to start of substring */
for ( pos--; pos > 0 && *p ; pos--, p++ )
if ( *p == '!' && *(p+1) != NULLC )
p++;
if ( *p == NULLC ) {
return( EmitErr( INDEX_VALUE_PAST_END_OF_STRING, cnt ) );
}
if ( *p == '!' && *(p+1) != NULLC )
p++;
for ( newvalue = p, cnt = size; *p && cnt; cnt--, p++ )
if ( *p == '!' && *(p+1) != NULLC )
p++;
/* v2.04: check added */
if ( chksize && cnt ) {
return( EmitError( COUNT_VALUE_TOO_LARGE ) );
}
size = p - newvalue;
p = newvalue;
#else
if ( pos > cnt ) {
return( EmitErr( INDEX_VALUE_PAST_END_OF_STRING, pos ) );
}
if ( chksize && (pos+size-1) > cnt ) {
return( EmitError( COUNT_VALUE_TOO_LARGE ) );
}
p += pos - 1;
if ( size == -1 )
size = cnt - pos + 1;
#endif
sym = SymSearch( name );
/* if we've never seen it before, put it in */
if( sym == NULL ) {
sym = SymCreate( name );
} else if( sym->state == SYM_UNDEFINED ) {
/* it was referenced before being defined. This is
* a bad idea for preprocessor text items, because it
* will require a full second pass!
*/
sym_remove_table( &SymTables[TAB_UNDEF], (struct dsym *)sym );
#if FASTPASS
SkipSavedState();
EmitWarn( 2, TEXT_MACRO_USED_PRIOR_TO_DEFINITION, sym->name );
#endif
} else if( sym->state != SYM_TMACRO ) {
/* it is defined as something incompatible, get out */
DebugMsg(( "SubStrDir(%s) error, incompatible type\n", sym->name));
return( EmitErr( SYMBOL_REDEFINITION, sym->name ) );
}
sym->state = SYM_TMACRO;
sym->isdefined = TRUE;
#if FASTMEM==0
if ( sym->string_ptr )
LclFree( sym->string_ptr );
sym->string_ptr = (char *)LclAlloc( size + 1 );
#else
if ( sym->total_size < ( size + 1 ) ) {
LclFree( sym->string_ptr );
sym->string_ptr = LclAlloc ( size + 1 );
sym->total_size = size + 1;
}
#endif
memcpy( sym->string_ptr, p, size );
*(sym->string_ptr + size) = NULLC;
DebugMsg1(("SubStrDir(%s): result=>%s<\n", sym->name, sym->string_ptr ));
LstWrite( LSTTYPE_TMACRO, 0, sym );
return( NOT_ERROR );
}
ret_code SimplifiedSegDir( int i, struct asm_tok tokenarray[] )
/*************************************************************/
/*
Handles simplified segment directives:
.CODE, .STACK, .DATA, .DATA?, .FARDATA, .FARDATA?, .CONST
*/
{
const char *name = NULL;
char init;
int type;
struct expr opndx;
DebugMsg1(("SimplifiedSegDir(%s) enter\n", tokenarray[i].string_ptr ));
LstWrite( LSTTYPE_DIRECTIVE, 0, NULL );
if( ModuleInfo.model == MODEL_NONE ) {
EmitError( MODEL_IS_NOT_DECLARED );
return( ERROR );
}
//type = tokenarray[i].value;
type = GetSflagsSp( tokenarray[i].tokval );
i++; /* get past the directive token */
if( type == SIM_STACK ) {
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 ) == ERROR )
return( ERROR );
if( opndx.kind == EXPR_EMPTY )
opndx.value = DEFAULT_STACK_SIZE;
else if( opndx.kind != EXPR_CONST ) {
EmitError( CONSTANT_EXPECTED );
return( ERROR );
}
} else {
/* Masm accepts a name argument for .CODE and .FARDATA[?] only.
* JWasm also accepts this for .DATA[?] and .CONST unless
* option -Zne is set.
*/
if( tokenarray[i].token == T_ID &&
( type == SIM_CODE || type == SIM_FARDATA || type == SIM_FARDATA_UN
|| ( Options.strict_masm_compat == FALSE &&
( type == SIM_DATA || type == SIM_DATA_UN || type == SIM_CONST )))) {
name = tokenarray[i].string_ptr;
i++;
}
}
if ( tokenarray[i].token != T_FINAL ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
return( ERROR );
}
NewLineQueue();
if( type != SIM_STACK )
close_currseg(); /* emit a "xxx ENDS" line to close current seg */
if ( name == NULL )
init = ( ModuleInfo.simseg_init & ( 1 << type ) );
switch( type ) {
case SIM_CODE: /* .code */
SetSimSeg( SIM_CODE, name );
if( ModuleInfo.model == MODEL_TINY ) {
/* v2.05: add the named code segment to DGROUP */
if ( name )
AddToDgroup( SIM_CODE, name );
name = szDgroup;
} else if( ModuleInfo.model == MODEL_FLAT ) {
name = "FLAT";
} else {
if( name == NULL )
name = SegmNames[SIM_CODE];
}
AddLineQueueX( "%r %r:%s", T_ASSUME, T_CS, name );
break;
case SIM_STACK: /* .stack */
/* if code is generated which does "emit" bytes,
* the original source line has to be saved.
* v2.05: must not be done after LstWrite() has been called!
* Also, there are no longer bytes "emitted".
*/
//FStoreLine();
SetSimSeg( SIM_STACK, NULL );
AddLineQueueX( "ORG 0%xh", NUMQUAL opndx.value );
EndSimSeg( SIM_STACK );
/* add stack to dgroup for some segmented models */
if ( !init )
if ( ModuleInfo.distance != STACK_FAR )
AddToDgroup( SIM_STACK, NULL );
break;
case SIM_DATA: /* .data */
case SIM_DATA_UN: /* .data? */
case SIM_CONST: /* .const */
SetSimSeg( type, name );
AddLineQueueX( "%r %r:ERROR", T_ASSUME, T_CS );
if ( name || (!init) )
AddToDgroup( type, name );
break;
case SIM_FARDATA: /* .fardata */
case SIM_FARDATA_UN: /* .fardata? */
SetSimSeg( type, name );
AddLineQueueX( "%r %r:ERROR", T_ASSUME, T_CS );
break;
default: /* shouldn't happen */
/**/myassert( 0 );
break;
}
RunLineQueue();
DebugMsg1(("SimplifiedSegDir exit\n"));
return( NOT_ERROR );
}
