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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: data definition. handles
* - directives DB,DW,DD,...
* - predefined types (BYTE, WORD, DWORD, ...)
* - arbitrary types
*
****************************************************************************/
#include <ctype.h>
#include <float.h>
#include "globals.h"
#include "memalloc.h"
#include "parser.h"
#include "expreval.h"
#include "input.h"
#include "tbyte.h"
#include "fixup.h"
#include "listing.h"
#include "segment.h"
#include "types.h"
#include "fastpass.h"
#include "tokenize.h"
#include "macro.h"
#include "omf.h"
#include "myassert.h"
//#ifndef min
//#define min(x,y) (((x) < (y)) ? (x) : (y))
//#endif
#if !defined(__GNUC__) && !defined(__POCC__)
#define tolower(c) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c )
#endif
extern ret_code segm_override( const struct expr *, struct code_info * );
extern struct asym *SegOverride;
extern const char szNull[];
/* initialize an array inside a structure
* if there are no brackets, the next comma, '>' or '}' will terminate
*
* valid initialization are:
* - an expression, might contain DUP or a string enclosed in quotes.
* - a literal enclosed in <> or {} which then is supposed to contain
* single items.
*/
static ret_code InitializeArray( const struct field_item *f, int *pi, struct asm_tok tokenarray[] )
/*************************************************************************************************/
{
//int count;
//char *ptr;
//char bArray = FALSE;
int oldofs;
int i = *pi;
int j;
int lvl;
char c;
DebugMsg1(("InitializeArray( %s ) enter, items=%lu, type=%s, tokenpos=%s\n", f->sym->name, f->sym->total_length, f->initializer, tokenarray[i].tokpos ));
/* empty the line queue to update the current offset */
if ( is_linequeue_populated() ) {
RunLineQueueEx();
}
oldofs = GetCurrOffset();
DebugMsg1(("InitializeArray(%s): current offset=%X\n", f->sym->name, oldofs ));
/* If current item is a literal enclosed in <> or {}, just use this
* item. Else, use all items until a comma or EOL is found.
* Prior to v2.04, EvalOperand() was called in the latter case. This
* was an error, because text macros might be found in the
* expression - which makes the expression evaluator complain.
*/
if ( tokenarray[i].token != T_STRING ||
( tokenarray[i].string_delim != '<' &&
tokenarray[i].string_delim != '{' )) {
DebugMsg1(("InitializeArray( %s ): i=%u token=%s\n", f->sym->name, i, tokenarray[i].string_ptr ));
/* copy items until a comma or EOL is found. */
for( j = i, lvl = 0; tokenarray[j].token != T_FINAL; j++ ) {
if ( tokenarray[j].token == T_OP_BRACKET )
lvl++;
else if ( tokenarray[j].token == T_CL_BRACKET )
lvl--;
#if 0
/* v2.05: a "single item" should cause an error.
* however, this can't be detected here, because the item
* may be a text macro. This is to be fixed yet.
*/
else if ( tokenarray[j].token == T_RES_ID && tokenarray[j].tokval == T_DUP )
bArray = TRUE;
else if ( tokenarray[j].token == T_STRING &&
( tokenarray[j].string_delim == '"' ||
tokenarray[j].string_delim == '\'') &&
(f->sym->mem_type & MT_SPECIAL_MASK) == 0 )
bArray = TRUE;
#endif
else if ( lvl == 0 && tokenarray[j].token == T_COMMA )
break;
}
lvl = tokenarray[j].tokpos - tokenarray[i].tokpos;
#if 0
if ( bArray == FALSE )
EmitErr( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM, tokenarray[i].tokpos );
#endif
*pi = j;
/* v2.07: accept an "empty" quoted string as array initializer for byte arrays */
if ( lvl == 2 &&
f->sym->total_size == f->sym->total_length &&
( tokenarray[i].string_delim == '"' || tokenarray[i].string_delim == '\'' ) )
;
else {
//memcpy( buffer, tokenarray[i].tokpos, lvl );
//buffer[lvl] = NULLC;
c = *tokenarray[j].tokpos;
*tokenarray[j].tokpos = NULLC;
AddLineQueueX( "%s %s", f->initializer, tokenarray[i].tokpos );
*tokenarray[j].tokpos = c;
RunLineQueueEx();
}
} else {
/* initializer is a literal */
(*pi)++;
/* if the string is empty, use the default initializer */
if ( tokenarray[i].stringlen == 0 )
AddLineQueueX( "%s %s", f->initializer, f->value );
else
AddLineQueueX( "%s %s", f->initializer, tokenarray[i].string_ptr );
RunLineQueueEx();
}
/* the generated line has been assembled and the true size
* of the array can be calculated now (may be 0).
*/
j = GetCurrOffset() - oldofs ;
DebugMsg1(("InitializeArray(%s): new offset=%X\n", f->sym->name, j + oldofs ));
if ( j > f->sym->total_size ) {
DebugMsg1(("InitializeArray(%s): error, j=%u total_size=%u\n", f->sym->name, j, f->sym->total_size ));
EmitErr( TOO_MANY_INITIAL_VALUES_FOR_ARRAY, tokenarray[i].tokpos );
} else if ( j < f->sym->total_size ) {
char *filler = "0";
DebugMsg1(("InitializeArray: remaining bytes=%lu\n", f->sym->total_size - j ));
/* v2.07: if element size is 1 and a string is used as initial value,
* pad array with spaces!
*/
if ( f->sym->total_size == f->sym->total_length &&
f->value && ( *f->value == '"' || *f->value == '\'' ) )
filler = "' '";
AddLineQueueX( "db %u dup (%s)",
f->sym->total_size - j,
CurrSeg && CurrSeg->e.seginfo->segtype != SEGTYPE_BSS ? filler : "?" );
}
DebugMsg1(("InitializeArray(%s) exit, curr ofs=%X\n", f->sym->name, GetCurrOffset() ));
return( NOT_ERROR );
}
#define EXPINIT 0
/* initialize a STRUCT/UNION/RECORD data item
* index: index of start item of initializer string
* symtype: type of data item
* embedded: is != NULL if proc is called recursively
* currently this proc emits ASM lines with simple types
* to actually "fill" the structure.
* Since this function may be reentered, it's necessary to save/restore
* global variable Token_Count.
*/
static ret_code InitStructuredVar( int index, struct asm_tok tokenarray[], const struct dsym *symtype, struct asym *embedded )
/****************************************************************************************************************************/
{
//char *ptr;
struct field_item *f;
int_32 nextofs;
int i;
int old_tokencount = Token_Count;
char *old_stringbufferend = StringBufferEnd;
int lvl;
#if AMD64_SUPPORT
uint_64 dwRecInit;
#else
uint_32 dwRecInit;
#endif
bool is_record_set;
struct expr opndx;
#ifdef DEBUG_OUT
#if FASTPASS
if ( Parse_Pass > PASS_1 && UseSavedState ) {
DebugMsg(("InitStructuredVar(%s): unexpectedly called in pass %u!!!!!\n", symtype->sym.name, Parse_Pass+1 ));
}
#endif
DebugMsg1(("InitStructuredVar(%s) enter, total=%" FU32 "/%" FU32 ", init=>%s<, embedded=%s, alignm=%u\n",
symtype->sym.name, symtype->sym.total_size, symtype->sym.total_length, tokenarray[index].string_ptr, embedded ? embedded->name : "NULL", symtype->e.structinfo->alignment ));
#endif
if ( tokenarray[index].token == T_STRING ) {
/* v2.08: no special handling of {}-literals anymore */
if ( tokenarray[index].string_delim != '<' &&
tokenarray[index].string_delim != '{' ) {
EmitError( MISSING_ANGLE_BRACKET_OR_BRACE_IN_LITERAL );
return( ERROR );
}
i = Token_Count + 1;
Token_Count = Tokenize( tokenarray[index].string_ptr, i, tokenarray, TOK_RESCAN );
/* once Token_Count has been modified, don't exit without
* restoring this value!
*/
index++;
#if EXPINIT
/* v2.05: expand the initialization string HERE!
* the problem is that the string may contain macro function calls.
* and it's crucial at what time the macro is evaluated.
*
* this doesn't fully work yet, but should be changed eventually.
*/
ExpandLineItems( ptr, i, tokenarray, FALSE, FALSE );
#endif
} else if ( embedded &&
( tokenarray[index].token == T_COMMA ||
tokenarray[index].token == T_FINAL)) {
i = Token_Count;
} else {
EmitErr( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM, embedded ? embedded->name : "" );
return( ERROR );
}
/*
* If embedded == NULL, then push the line queue.
* If embedded != NULL, InitStructuredVar was directly reentered
* due to an embedded structure/union within the structure. Then
* RunLineQueue() is NOT called and therefore the queue needn't be
* pushed.
*/
if ( embedded == NULL ) {
NewLineQueue();
}
if ( symtype->sym.typekind == TYPE_RECORD ) {
dwRecInit = 0;
is_record_set = FALSE;
}
ModuleInfo.StructInit++;
/* scan the STRUCT/UNION/RECORD's members */
for( f = symtype->e.structinfo->head; f != NULL; f = f->next ) {
DebugMsg1(("InitStructuredVar field=%s ofs=%" FU32 " total_size=%" FU32 " total_length=%" FU32 " initializer=%s default=>%s<\n",
f->sym->name,
f->sym->offset,
f->sym->total_size,
f->sym->total_length,
f->initializer ? f->initializer : "NULL",
f->value ));
/* is it a RECORD field? */
if ( f->sym->mem_type == MT_BITS ) {
if ( tokenarray[i].token == T_COMMA || tokenarray[i].token == T_FINAL ) {
if ( f->value ) {
int j = Token_Count + 1;
int max_item = Tokenize( f->value, j, tokenarray, TOK_RESCAN );
EvalOperand( &j, tokenarray, max_item, &opndx, 0 );
is_record_set = TRUE;
} else {
opndx.value = 0;
opndx.kind = EXPR_CONST;
opndx.quoted_string = NULL;
}
} else {
EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 );
is_record_set = TRUE;
}
if ( opndx.kind != EXPR_CONST || opndx.quoted_string != NULL )
EmitError( CONSTANT_EXPECTED );
if ( f->sym->total_size < 32 ) {
uint_32 dwMax = (1 << f->sym->total_size);
if ( opndx.value >= dwMax )
EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, opndx.sym ? opndx.sym->name : "" );
}
#if AMD64_SUPPORT
dwRecInit |= opndx.llvalue << f->sym->offset;
#else
dwRecInit |= opndx.value << f->sym->offset;
#endif
} else if ( f->initializer == NULL ) { /* embedded struct? */
InitStructuredVar( i, tokenarray, (struct dsym *)f->sym->type, f->sym );
if ( tokenarray[i].token == T_STRING )
i++;
} else if ( f->sym->isarray &&
tokenarray[i].token != T_FINAL &&
tokenarray[i].token != T_COMMA ) {
if ( ERROR == InitializeArray( f, &i, tokenarray ) )
break;
} else if ( f->sym->total_size == f->sym->total_length &&
tokenarray[i].token == T_STRING &&
tokenarray[i].stringlen > 1 &&
( tokenarray[i].string_delim == '"' ||
tokenarray[i].string_delim == '\'' ) ) {
/* v2.07: it's a byte type, but no array, string initializer must have true length 1 */
EmitError( STRING_OR_TEXT_LITERAL_TOO_LONG );
i++;
} else {
if ( tokenarray[i].token == T_FINAL || tokenarray[i].token == T_COMMA ) {
AddLineQueueX( "%s %s", f->initializer, f->value );
} else {
char c;
int j = i;
/* ignore commas enclosed in () */
/* might be a good idea to check the items:
* if DUP is found, call InitializeArray()
*/
for ( lvl = 0, c = 0; tokenarray[i].token != T_FINAL; i++ ) {
if ( tokenarray[i].token == T_OP_BRACKET )
lvl++;
else if ( tokenarray[i].token == T_CL_BRACKET )
lvl--;
else if ( lvl == 0 && tokenarray[i].token == T_COMMA )
break;
else if ( tokenarray[i].token == T_RES_ID && tokenarray[i].tokval == T_DUP )
c++; /* v2.08: check added */
}
if ( c ) {
EmitErr( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM, tokenarray[j].tokpos );
goto next_member;
}
c = *tokenarray[i].tokpos;
*tokenarray[i].tokpos = NULLC;
AddLineQueueX( "%s %s", f->initializer, tokenarray[j].tokpos );
*tokenarray[i].tokpos = c;
}
}
next_member:
/* Add padding bytes if necessary (never inside RECORDS!).
* f->next == NULL : it's the last field of the struct/union/record
*/
if ( symtype->sym.typekind != TYPE_RECORD ) {
if ( f->next == NULL || symtype->sym.typekind == TYPE_UNION )
nextofs = symtype->sym.total_size;
else
nextofs = f->next->sym->offset;
if ( f->sym->offset + f->sym->total_size < nextofs ) {
DebugMsg1(("InitStructuredVar: padding, field=%s ofs=%" FX32 " total=%" FX32 " nextofs=%" FX32 "\n",
f->sym->name, f->sym->offset, f->sym->total_size, nextofs ));
AddLineQueueX( "db %u dup (?) ;padding",
nextofs - (f->sym->offset + f->sym->total_size) );
}
}
/* for a union, just the first field is initialized */
if ( symtype->sym.typekind == TYPE_UNION )
break;
if ( f->next != NULL ) {
if ( tokenarray[i].token != T_FINAL )
if ( tokenarray[i].token == T_COMMA )
i++;
else {
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].tokpos );
while ( tokenarray[i].token != T_FINAL && tokenarray[i].token != T_COMMA)
i++;
}
}
} /* end for */
if ( symtype->sym.typekind == TYPE_RECORD ) {
short ddir;
switch ( symtype->sym.mem_type ) {
case MT_BYTE: ddir = T_DB; break;
case MT_WORD: ddir = T_DW; break;
#if AMD64_SUPPORT
case MT_QWORD: ddir = T_DQ; break;
#endif
default: ddir = T_DD;
}
#if AMD64_SUPPORT
/* AddLineQueueX() can't handle 64-bit numbers */
if ( ddir == T_DQ ) {
char buffer[32];
sprintf( buffer, "%0" I64x_SPEC "h", dwRecInit );
AddLineQueueX( is_record_set ? "%r %s" : "%r ?", ddir, buffer );
} else
AddLineQueueX( is_record_set ? "%r 0%xh" : "%r ?", ddir, (uint_32)dwRecInit );
#else
AddLineQueueX( is_record_set ? "%r 0%xh" : "%r ?", ddir, dwRecInit );
#endif
}
if ( tokenarray[i].token != T_FINAL ) {
DebugMsg1(("InitStructuredVar(%s): error, i=%u token=%s\n", symtype->sym.name, i, tokenarray[i].string_ptr ));
EmitErr( TOO_MANY_INITIAL_VALUES_FOR_STRUCTURE, tokenarray[i].tokpos );
}
/* restore token status before RunLineQueueEx(), to minimize mem usage */
Token_Count = old_tokencount;
StringBufferEnd = old_stringbufferend;
/* now run the generated code if embedded is NULL ... and
if at least one line has been generated */
if ( ( embedded == NULL ) && is_linequeue_populated() )
RunLineQueueEx();
ModuleInfo.StructInit--;
DebugMsg1(("InitStructuredVar(%s) exit, current ofs=%" FX32 "\n", symtype->sym.name, GetCurrOffset() ));
return( NOT_ERROR );
}
/*
* convert a string into little endian format - ( LSB 1st, LSW 1st ... etc ).
* <len> is the TYPE, may be 2,4,6,8,10?,16
*/
static char *little_endian( const char *src, unsigned len )
/*********************************************************/
{
/* v2.06: input and output buffer must be different! */
char *dst = StringBufferEnd;
for( ; len > 1; dst++, src++, len-- ) {
len--;
*dst = *(src + len);
*(dst + len) = *src;
}
if ( len )
*dst = *src;
return( StringBufferEnd );
}
#if 0 /* changed in v2.03 */
static void OutputDataBytes( const unsigned char *p, int len )
/************************************************************/
{
for( ; len; len-- )
OutputByte( *p++ );
}
#else
#define OutputDataBytes( x, y ) OutputBytes( x, y, NULL )
#endif
/* convert hex numbers with "real number designator" to binary.
* the tokenizer stores just the string.
*/
static void hex2float( void *out, const char *inp, int size )
/***********************************************************/
{
int val;
int i;
int j;
char *p = out;
const char *char_ptr = inp;
memset( (char *)out, 0, size );
for ( i = 0;
*char_ptr != NULLC && *char_ptr != 'r';
char_ptr++, i++ ) {
if( *char_ptr <= '9' )
val = *char_ptr - '0';
else
val = tolower( *char_ptr ) - 'a' + 10;
for ( j = 0, p = out; j < size; j++ ) {
val += *p * 16;
*(p++) = val;
val >>= 8;
}
}
}
void atofloat( void *out, const char *inp, unsigned size, bool negative, uint_8 ftype )
/*************************************************************************************/
{
//const char *inp;
double double_value;
float float_value;
/* v2.04: accept and handle 'real number designator' */
if ( ftype ) {
hex2float( out, inp, size );
} else {
switch ( size ) {
case 4:
double_value = strtod( inp, NULL );
/* v2.06: check added */
if ( double_value > FLT_MAX )
EmitErr( MAGNITUDE_TOO_LARGE_FOR_SPECIFIED_SIZE );
if( negative )
double_value *= -1;
float_value = double_value;
*(float *)out = float_value;
break;
case 8:
double_value = strtod( inp, NULL );
if( negative )
double_value *= -1;
*(double *)out = double_value;
break;
case 10:
strtotb( inp, (struct TB_LD *)out, negative );
break;
default:
/* sizes != 4,8 or 10 aren't accepted.
* Masm ignores silently, JWasm also unless -W4 is set.
*/
if ( Parse_Pass == PASS_1 )
EmitWarn( 4, FP_INITIALIZER_IGNORED );
memset( (char *)out, 0, size );
}
}
return;
}
static void output_float( const struct expr *opnd, unsigned size )
/****************************************************************/
{
/* v2.07: buffer extended to max size of a data item (=32).
* test case: XMMWORD REAL10 ptr 1.0
*/
//char buffer[12];
char buffer[32];
if ( opnd->mem_type != MT_EMPTY ) {
memset( buffer, 0, sizeof( buffer ) );
atofloat( buffer, opnd->float_tok->string_ptr, SizeFromMemtype( opnd->mem_type, USE_EMPTY, NULL ), opnd->negative, opnd->float_tok->floattype );
} else {
atofloat( buffer, opnd->float_tok->string_ptr, size, opnd->negative, opnd->float_tok->floattype );
}
OutputDataBytes( buffer, size );
return;
}
/* update a symbols's total_length (operator LENGTHOF) and
* first_length (operator LENGTH) fields.
* Called in Pass 1 only.
*/
static void update_sizes( struct asym *sym, bool first, uint_32 size )
/********************************************************************/
{
sym->total_length++;
sym->total_size += size;
if( first ) {
sym->first_length++;
sym->first_size += size;
}
}
/*
* initialize a data item or structure field;
* - sym:
* for data items: label (may be NULL)
* for STRUCT declarations: field/member (is never NULL)
* - start_pos: pointer to token array index [in/out]
* - tokenarray[]: token array
* - struct_sym: type of label/field if item is a STRUCT/UNION/RECORD, otherwise NULL.
* - no_of_bytes: size of type
* - dup: array size if called by DUP operator, otherwise 1
* - struct_field: 1=inside a STRUCT declaration
*
* the symbol will have its 'isarray' flag set if any of the following is true:
* 1. at least 2 items separated by a comma are used for initialization
* 2. the DUP operator occures
* 3. item size is 1 and a quoted string with len > 1 is used as initializer
*/
static ret_code data_item( int *start_pos, struct asm_tok tokenarray[], struct asym *sym, const struct dsym *struct_sym, uint_32 no_of_bytes, uint_32 dup, bool struct_field, bool float_initializer, bool first )
/****************************************************************************************************************************************************************************************************************/
{
int i;
int string_len;
#if FASTPASS
bool firstitem = TRUE;
#endif
bool initwarn = FALSE;
//unsigned int count;
uint_8 *pchar;
char tmp;
enum fixup_types fixup_type;
struct fixup *fixup;
struct expr opndx;
DebugMsg1(("data_item( label=%s, type=%s, pos=%d, size=%" FU32 ", dup=%" FX32 "h, struct=%u ) enter\n",
sym ? sym->name : "NULL",
struct_sym ? struct_sym->sym.name : "NULL",
*start_pos, no_of_bytes, dup, struct_field ));
if ( sym )
sym->isdata = TRUE;
for ( ; dup; dup-- ) {
i = *start_pos;
next_item:
/* since v1.94, the expression evaluator won't handle strings
* enclosed in <> or {}. That is, in previous versions syntax
* "mov eax,<1>" was accepted, now it's rejected.
*/
if ( tokenarray[i].token == T_STRING && ( tokenarray[i].string_delim == '<' || tokenarray[i].string_delim == '{' ) ) {
if( struct_sym != NULL ) {
DebugMsg1(("data_item(%s): literal/brace found: >%s<, struct_field=%u, no_of_bytes=%" FU32 ", curr_ofs=%" FX32 "\n",
struct_sym->sym.name, tokenarray[i].string_ptr, struct_field, no_of_bytes, GetCurrOffset()));
/* it's either a real data item - then struct_field is FALSE -
or a structure FIELD of arbitrary type */
if( struct_field == FALSE ) {
#if FASTPASS
DebugMsg1(("data_item: calling InitStructuredVar(%s, %u), firstitem=%u\n", struct_sym->sym.name, i, firstitem ));
if ( Parse_Pass == PASS_1 ) {
/* v2.05: severe error: ignore firstitem if first == 0! */
//if ( firstitem ) {
if ( first && firstitem ) {
/* "remove" the current line" */
firstitem = FALSE;
*LineStoreCurr->line = ';';
LstWriteSrcLine();
/* CurrSource holds the source line, which is not
* to reach pass 2
*/
*tokenarray[0].tokpos = ';'; /* v2.08: was CurrSource */
}
if ( sym && sym->first_length == 0 ) {
sprintf( StringBufferEnd, "%s label %s", sym->name, struct_sym->sym.name );
StoreLine( StringBufferEnd, list_pos, 0 );
if ( Options.preprocessor_stdout == TRUE )
WritePreprocessedLine( StringBufferEnd );
}
}
#endif
if ( InitStructuredVar( i, tokenarray, struct_sym, NULL ) == ERROR )
return( ERROR );
}
if( sym && Parse_Pass == PASS_1 )
update_sizes( sym, first, no_of_bytes );
i++;
goto item_done;
}
#if 0 /* just let EvalOperand() emit 'Unexpected literal...' error */
else {
DebugMsg(("data_item: invalid initializer for structure >%s<\n", tokenarray[i].tokpos ));
//EmitError( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM );
EmitErr( INVALID_DATA_INITIALIZER );
return( ERROR );
}
#endif
}
if ( tokenarray[i].token == T_QUESTION_MARK )
opndx.kind = EXPR_EMPTY;
else
if ( EvalOperand( &i, tokenarray, Token_Count, &opndx, 0 ) == ERROR )
return( ERROR );
//DebugMsg(("data_item, EvalOperand() returned, opndx.kind=%u\n", opndx.kind ));
/* handle DUP operator */
if ( tokenarray[i].token == T_RES_ID && tokenarray[i].tokval == T_DUP ) {
/* v2.03: db 'AB' dup (0) is valid syntax! */
//if ( opndx.kind != EXPR_CONST || opndx.string != NULL ) {
if ( opndx.kind != EXPR_CONST ) {
DebugMsg(("data_item, error, opndx.kind=%u, opndx.string=%X\n", opndx.kind, opndx.quoted_string));
EmitError( CONSTANT_EXPECTED );
return( ERROR );
}
/* max dup is 0x7fffffff */
if ( opndx.value < 0 ) {
EmitError( COUNT_MUST_BE_POSITIVE_OR_ZERO );
return( ERROR );
}
i++;
if( tokenarray[i].token != T_OP_BRACKET ) {
DebugMsg(("data_item error, missing '('\n"));
EmitErr( EXPECTED, "(" );
return( ERROR );
}
i++;
if ( sym )
sym->isarray = TRUE;
if ( opndx.value == 0 ) {
int level = 1;
for ( ; tokenarray[i].token != T_FINAL; i++ ) {
if ( tokenarray[i].token == T_OP_BRACKET )
level++;
else if ( tokenarray[i].token == T_CL_BRACKET )
level--;
if ( level == 0 )
break;
}
} else {
DebugMsg1(("data_item(%s): op DUP, count=%" FX32 "h, calling data_item()\n", sym ? sym->name : "NULL", opndx.uvalue ));
if ( data_item( &i, tokenarray, sym, struct_sym, no_of_bytes, opndx.uvalue, struct_field, float_initializer, first ) == ERROR ) {
DebugMsg(("data_item(%s): op DUP, count=%" FX32 "h, returned with error\n", sym ? sym->name : "NULL", opndx.uvalue ));
return( ERROR );
}
}
if( tokenarray[i].token != T_CL_BRACKET ) {
DebugMsg(("data_item: error 'missing ')', exit\n"));
EmitErr( EXPECTED, ")" );
return( ERROR );
}
i++;
} else {
/* a STRUCT/UNION/RECORD data item needs a literal as initializer */
/* v2.06: changed */
//if( struct_sym != NULL && struct_field == FALSE ) {
if( struct_sym != NULL && struct_sym->sym.typekind != TYPE_TYPEDEF ) {
EmitErr( STRUCTURE_IMPROPERLY_INITIALIZED, struct_sym->sym.name );
return( ERROR );
}
/* handle '?' */
if ( opndx.kind == EXPR_EMPTY && tokenarray[i].token == T_QUESTION_MARK ) {
DebugMsg1(("data_item: ? found, curr_ofs=%X\n", GetCurrOffset()));
opndx.uvalue = no_of_bytes;
/* tiny optimization for uninitialized arrays */
if ( tokenarray[i+1].token != T_COMMA && i == *start_pos ) {
opndx.uvalue *= dup;
if( sym && Parse_Pass == PASS_1 ) {
sym->total_length += dup;
sym->total_size += opndx.uvalue;
if( first ) {
sym->first_length += dup;
sym->first_size += opndx.uvalue;
}
}
dup = 1; /* force loop exit */
} else {
if( sym && Parse_Pass == PASS_1 )
update_sizes( sym, first, opndx.uvalue );
}
if( !struct_field ) {
SetCurrOffset( CurrSeg, opndx.uvalue, TRUE, TRUE );
}
i++;
goto item_done;
}
/* warn about initialized data in BSS/AT segments */
if ( Parse_Pass == PASS_2 &&
struct_field == FALSE &&
// CurrSeg != NULL && /* this is already ensured to be true */
(CurrSeg->e.seginfo->segtype == SEGTYPE_BSS ||
CurrSeg->e.seginfo->segtype == SEGTYPE_ABS) &&
initwarn == FALSE ) {
EmitWarn( 2,
INITIALIZED_DATA_NOT_SUPPORTED_IN_SEGMENT,
(CurrSeg->e.seginfo->segtype == SEGTYPE_BSS) ? "BSS" : "AT" );
initwarn = TRUE;
};
switch( opndx.kind ) {
case EXPR_EMPTY:
DebugMsg(("data_item.EMPTY: idx=%u, tokenarray.token=%X\n", i, tokenarray[i].token));
if ( tokenarray[i].token != T_FINAL )
EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr );
else
EmitError( SYNTAX_ERROR );
return( ERROR );
case EXPR_FLOAT:
DebugMsg1(("data_item.FLOAT: >%s<, struct_field=%u, no_of_bytes=%u, curr_ofs=%X\n",
opndx.float_tok->string_ptr, struct_field, no_of_bytes, GetCurrOffset()));
if (!struct_field)
output_float( &opndx, no_of_bytes );
if( sym && Parse_Pass == PASS_1 ) {
update_sizes( sym, first, no_of_bytes );
}
break;
case EXPR_CONST:
if ( float_initializer ) {
EmitError( MUST_USE_FLOAT_INITIALIZER );
return( ERROR );
}
/* a string returned by the evaluator (enclosed in quotes!)? */
if ( opndx.quoted_string ) {
DebugMsg1(("data_item.CONST: string found: >%s<, struct_field=%u, no_of_bytes=%u, curr_ofs=%X\n", opndx.quoted_string, struct_field, no_of_bytes, GetCurrOffset()));
pchar = (uint_8 *)opndx.quoted_string->string_ptr + 1;
string_len = opndx.quoted_string->stringlen; /* this is the length without quotes */
/* v2.07: check for empty string for ALL types */
if ( string_len == 0 ) {
if ( struct_field ) {
/* no error for struct field */
/* v2.07: don't modify string_len! Instead
* mark field as array!
*/
//string_len = 1;
sym->isarray = TRUE;
} else {
EmitError( EMPTY_STRING ); /* MASM doesn't like "" */
return( ERROR );
}
}
/* a string is only regarded as an array if item size is 1 */
/* else it is regarded as ONE item */
if( no_of_bytes != 1 ) {
if( string_len > no_of_bytes ) {
EmitError( INITIALIZER_OUT_OF_RANGE );
return( ERROR );
}
}
if( sym && Parse_Pass == PASS_1 && string_len > 0 ) {
update_sizes( sym, first, no_of_bytes );
if ( no_of_bytes == 1 && string_len > 1 ) {
int j;
sym->isarray = TRUE; /* v2.07: added */
for ( j = string_len-1; j; j-- )
update_sizes( sym, FALSE, no_of_bytes );
}
}
if( !struct_field ) {
/* anything bigger than a byte must be stored in little-endian
* format -- LSB first */
if ( string_len > 1 && no_of_bytes > 1 )
pchar = little_endian( (const char *)pchar, string_len );
OutputDataBytes( pchar, string_len );
if ( no_of_bytes > string_len )
FillDataBytes( 0, no_of_bytes - string_len );
}
} else {
/* it's NOT a string */
DebugMsg1(("data_item.CONST: const found, value=%" FX32 "h, no_of_bytes=%u, curr_ofs=%" FX32 "\n", opndx.value, no_of_bytes, GetCurrOffset()));
if( !struct_field ) {
/* the evaluator cannot handle types with size > 16.
* so if a simple type is larger (can't happen currently),
* clear anything which is above.
*/
if ( no_of_bytes > 16 ) {
OutputDataBytes( opndx.chararray, 16 );
tmp = ( opndx.chararray[15] < 0x80 ? 0 : 0xFF );
FillDataBytes( tmp, no_of_bytes - 16 );
} else {
/* v2.06: TBYTE/OWORD/XMMWORD: extend a negative value to 16-byte */
if ( no_of_bytes > sizeof( int_64 ) ) {
if ( opndx.negative && opndx.value64 < 0 && opndx.hlvalue == 0 )
opndx.hlvalue = -1;
}
OutputDataBytes( opndx.chararray, no_of_bytes );
/* check that there's no significant data left
* which hasn't been emitted.
*/
/* v2.06: rewritten, now more rigid and checks
* 1-8 and 10 bytes instead of just 1-4.
*/
if ( no_of_bytes <= sizeof( int_64 ) ) {
tmp = ( opndx.chararray[7] < 0x80 ? 0 : 0xFF );
memset( opndx.chararray, tmp, no_of_bytes );
if ( opndx.llvalue != 0 && opndx.llvalue != -1 ) {
DebugMsg(("data_item.CONST: error, unhandled data is %" I64X_SPEC "_%016" I64X_SPEC "\n", opndx.hlvalue, opndx.llvalue));
EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, opndx.sym ? opndx.sym->name : "" );
return( ERROR );
}
} else if ( no_of_bytes == 10 ) {
//if ( opndx.hlvalue > 0xffff ) {
if ( opndx.hlvalue > 0xffff && opndx.hlvalue < -0xffff ) {
EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, opndx.sym ? opndx.sym->name : "" );
return( ERROR );
}
}
}
}
if( sym && Parse_Pass == PASS_1 ) {
update_sizes( sym, first, no_of_bytes );
}
}
break;
case EXPR_ADDR:
/* since a fixup will be created, 8 bytes is max */
if ( no_of_bytes > sizeof(uint_64) ) {
EmitError( INVALID_DATA_INITIALIZER );
break;
}
#if AMD64_SUPPORT
if ( ModuleInfo.Ofssize != USE64 )
#endif
if ( opndx.hvalue && ( opndx.hvalue != -1 || opndx.value >= 0 ) ) {
/* v2.05: compared to Masm, the above is too restrictive.
* the line below might be better.
*/
//if ( opndx.hvalue != 0 && ( opndx.hvalue != -1 || opndx.value == 0 ) ) {
DebugMsg(("data_item.ADDR: displacement doesn't fit in 32 bits: %" I64X_SPEC "\n", opndx.value64 ));
EmitConstError( &opndx );
return( ERROR );
}
/* indirect addresses (incl. stack variables) are invalid */
if ( opndx.indirect == TRUE ) {
DebugMsg(("data_item.ADDR: error, indirect=%u, sym=%X\n", opndx.indirect, opndx.sym ));
EmitError( INVALID_USE_OF_REGISTER );
break;
}
if ( float_initializer ) {
DebugMsg(("data_item.ADDR: error, float_initializer=%u\n", float_initializer ));
EmitError( MUST_USE_FLOAT_INITIALIZER );
break;
}
if( sym && Parse_Pass == PASS_1 ) {
update_sizes( sym, first, no_of_bytes );
}
/* for STRUCT fields, don't emit anything! */
if ( struct_field ) {
break;
}
/* determine what type of fixup is to be created */
switch ( opndx.instr ) {
case T_SEG:
if ( no_of_bytes < 2 ) {
DebugMsg(("data_item.ADDR: error, a SEG wont fit in a BYTE\n" ));
EmitError( MAGNITUDE_TOO_LARGE_FOR_SPECIFIED_SIZE );
}
fixup_type = FIX_SEG;
break;
case T_OFFSET:
switch ( no_of_bytes ) {
case 1:
DebugMsg(("data_item.ADDR: error, a offset wont fit in a BYTE\n" ));
EmitError( OFFSET_MAGNITUDE_TOO_LARGE );
fixup_type = FIX_OFF8;
break;
case 2:
fixup_type = FIX_OFF16;
break;
#if AMD64_SUPPORT
case 8:
if ( ModuleInfo.Ofssize == USE64 ) {
fixup_type = FIX_OFF64;
break;
}
#endif
default:
if ( opndx.sym && ( GetSymOfssize(opndx.sym) == USE16 ) )
fixup_type = FIX_OFF16;
else
fixup_type = FIX_OFF32;
break;
}
break;
#if IMAGERELSUPP
case T_IMAGEREL:
if ( no_of_bytes < sizeof(uint_32) ) {
DebugMsg(("data_item.ADDR: IMAGEREL, error, size=%u (should be 4)\n", no_of_bytes ));
EmitError( OFFSET_MAGNITUDE_TOO_LARGE );
}
fixup_type = FIX_OFF32_IMGREL;
break;
#endif
#if SECTIONRELSUPP
case T_SECTIONREL:
if ( no_of_bytes < sizeof(uint_32) ) {
DebugMsg(("data_item.ADDR: SECTIONREL, error, size=%u (should be 4)\n", no_of_bytes ));
EmitError( OFFSET_MAGNITUDE_TOO_LARGE );
}
fixup_type = FIX_OFF32_SECREL;
break;