static struct dsym *CreateSegment( struct dsym *seg, const char *name, bool add_global )
/**************************************************************************************/
{
if ( seg == NULL )
seg = ( add_global ? (struct dsym *)SymCreate( name ) : (struct dsym *)SymAlloc( name ) );
else if ( seg->sym.state == SYM_UNDEFINED )
sym_remove_table( &SymTables[TAB_UNDEF], seg );
if ( seg ) {
seg->sym.state = SYM_SEG;
seg->e.seginfo = LclAlloc( sizeof( struct seg_info ) );
memset( seg->e.seginfo, 0, sizeof( struct seg_info ) );
seg->e.seginfo->Ofssize = ModuleInfo.defOfssize;
seg->e.seginfo->alignment = 4; /* this is PARA (2^4) */
seg->e.seginfo->combine = COMB_INVALID;
/* null class name, in case none is mentioned */
seg->e.seginfo->class_name_idx = 1;
seg->next = NULL;
/* don't use sym_add_table(). Thus the "prev" member
* becomes free for another use.
*/
if ( SymTables[TAB_SEG].head == NULL )
SymTables[TAB_SEG].head = SymTables[TAB_SEG].tail = seg;
else {
SymTables[TAB_SEG].tail->next = seg;
SymTables[TAB_SEG].tail = seg;
}
}
return( seg );
}
static struct dsym *CreateGroup( const char *name )
/*************************************************/
{
struct dsym *grp;
grp = (struct dsym *)SymSearch( name );
if( grp == NULL || grp->sym.state == SYM_UNDEFINED ) {
if ( grp == NULL )
grp = (struct dsym *)SymCreate( name );
else
sym_remove_table( &SymTables[TAB_UNDEF], grp );
grp->sym.state = SYM_GRP;
grp->e.grpinfo = LclAlloc( sizeof( struct grp_info ) );
grp->e.grpinfo->seglist = NULL;
//grp->e.grpinfo->grp_idx = 0;
//grp->e.grpinfo->lname_idx = 0;
grp->e.grpinfo->numseg = 0;
sym_add_table( &SymTables[TAB_GRP], grp );
grp->sym.list = TRUE;
grp->e.grpinfo->grp_idx = ++grpdefidx;
grp->e.grpinfo->lname_idx = ++LnamesIdx;
AddLnameData( &grp->sym );
} else if( grp->sym.state != SYM_GRP ) {
EmitErr( SYMBOL_REDEFINITION, name );
return( NULL );
}
grp->sym.isdefined = TRUE;
return( grp );
}
/* create external.
* sym must be NULL or of state SYM_UNDEFINED!
*/
static struct asym *CreateExternal( struct asym *sym, const char *name, char weak )
/*********************************************************************************/
{
if ( sym == NULL )
sym = SymCreate( name );
else
sym_remove_table( &SymTables[TAB_UNDEF], (struct dsym *)sym );
if ( sym ) {
sym->state = SYM_EXTERNAL;
sym->seg_ofssize = ModuleInfo.Ofssize;
sym->iscomm = FALSE;
sym->weak = weak;
sym_add_table( &SymTables[TAB_EXT], (struct dsym *)sym ); /* add EXTERNAL */
}
return( sym );
}
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 );
}
/* 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 );
}
/*
* used by EQU if the value to be assigned to a symbol is text.
* - sym: text macro name, may be NULL
* - name: identifer ( if sym == NULL )
* - value: value of text macro ( original line, BEFORE expansion )
*/
struct asym *SetTextMacro( struct asm_tok tokenarray[], struct asym *sym, const char *name, const char *value )
/*************************************************************************************************************/
{
int count;
//char *p;
DebugCmd( equcnt++ );
if ( sym == NULL )
sym = SymCreate( name );
else if ( sym->state == SYM_UNDEFINED ) {
sym_remove_table( &SymTables[TAB_UNDEF], (struct dsym *)sym );
#if FASTPASS
/* the text macro was referenced before being defined.
* this is valid usage, but it requires a full second pass.
* just simply deactivate the fastpass feature for this module!
*/
SkipSavedState();
#endif
EmitWarn( 2, TEXT_MACRO_USED_PRIOR_TO_DEFINITION, sym->name );
} else if ( sym->state != SYM_TMACRO ) {
EmitErr( SYMBOL_REDEFINITION, name );
return( NULL );
}
sym->state = SYM_TMACRO;
sym->isdefined = TRUE;
if ( tokenarray[2].token == T_STRING && tokenarray[2].string_delim == '<' ) {
/* the simplest case: value is a literal. define a text macro! */
/* just ONE literal is allowed */
if ( tokenarray[3].token != T_FINAL ) {
EmitErr( SYNTAX_ERROR_EX, tokenarray[3].tokpos );
return( NULL );
}
value = tokenarray[2].string_ptr;
count = tokenarray[2].stringlen;
} else {
/*
* the original source is used, since the tokenizer has
* deleted some information.
*/
//while ( isspace( *value ) ) value++; /* probably obsolete */
count = strlen( value );
/* skip trailing spaces */
for ( ; count; count-- )
if ( isspace( *( value + count - 1 ) ) == FALSE )
break;
}
#if FASTMEM==0
if ( sym->string_ptr )
LclFree( sym->string_ptr );
sym->string_ptr = (char *)LclAlloc( count + 1 );
#else
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
memcpy( sym->string_ptr, value, count );
*(sym->string_ptr + count) = NULLC;
DebugMsg1(( "SetTextMacro(%s): value is >%s<, exit\n", sym->name, sym->string_ptr ));
return( sym );
}
