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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 "globals.h"
#include "memalloc.h"
#include "parser.h"
#include "expreval.h"
#include "input.h"
#include "fixup.h"
#include "listing.h"
#include "lqueue.h"
#include "proc.h"
#include "segment.h"
#include "types.h"
#include "fastpass.h"
#include "tokenize.h"
#include "macro.h"
#include "omf.h"
#include "atofloat.h"
#include "myassert.h"
#if defined(WINDOWSDDK)
#if defined(_WIN32)
typedef _W64 int INT_PTR, *PINT_PTR;
typedef _W64 unsigned int UINT_PTR, *PUINT_PTR;
typedef _W64 long LONG_PTR, *PLONG_PTR;
typedef _W64 unsigned long ULONG_PTR, *PULONG_PTR;
#define __int3264 __int32
#else
typedef __int64 INT_PTR, *PINT_PTR;
typedef unsigned __int64 UINT_PTR, *PUINT_PTR;
typedef __int64 LONG_PTR, *PLONG_PTR;
typedef unsigned __int64 ULONG_PTR, *PULONG_PTR;
#define __int3264 __int64
#endif
#else
#include <inttypes.h>
#if defined(_WIN32)
typedef _W64 int INT_PTR, *PINT_PTR;
typedef _W64 unsigned int UINT_PTR, *PUINT_PTR;
typedef _W64 long LONG_PTR, *PLONG_PTR;
typedef _W64 unsigned long ULONG_PTR, *PULONG_PTR;
#define __int3264 __int32
#else
typedef int64_t INT_PTR, *PINT_PTR;
typedef uint64_t UINT_PTR, *PUINT_PTR;
typedef int64_t LONG_PTR, *PLONG_PTR;
typedef uint64_t ULONG_PTR, *PULONG_PTR;
#define __int3264 int64_t
typedef int64_t __int64;
#endif
#endif
extern ret_code segm_override( const struct expr *, struct code_info * );
extern struct asym *SegOverride;
extern const char szNull[];
extern UINT_PTR UTF8toWideChar(const unsigned char *pSource, UINT_PTR nSourceLen, UINT_PTR *nSourceDone, unsigned short *szTarget, UINT_PTR nTargetMax);
static ret_code data_item( int *, struct asm_tok[], struct asym *, uint_32, const struct asym *, uint_32, bool inside_struct, bool, bool, int );
#define OutputDataBytes( x, y ) OutputBytes( x, y, NULL )
#define OutputInterleavedDataBytes( x, y ) OutputInterleavedBytes( x, y, NULL );
/* This function shifts left 128 for the RECORD */
void ShiftLeft (uint_64 *dstHi, uint_64 *dstLo,uint_64 num, int pos)
{
uint_64 orHi = 0;
uint_64 orLo = num;
if (pos >= 0x40){
orHi = orLo;
orLo = 0;
pos = pos - 0x40;
orHi = orHi << pos;
}
else {
orLo = orLo << pos;
num = num >> ~pos;
orHi |= num;
}
*dstHi |= orHi;
*dstLo |= orLo;
}
/* 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 sfield *f, int *pi, struct asm_tok tokenarray[] )
/*********************************************************************************************/
{
uint_32 oldofs;
uint_32 no_of_bytes;
int i = *pi;
int j;
int lvl;
int old_tokencount;
char bArray;
ret_code rc;
oldofs = GetCurrOffset();
no_of_bytes = SizeFromMemtype( f->sym.mem_type, USE_EMPTY, f->sym.type );
DebugMsg1(("InitializeArray(%s) enter, items=%" I32_SPEC "u size=%" I32_SPEC "u mem_type=%xh type=%s currofs=%" I32_SPEC "X [%s]\n",
f->sym.name, f->sym.total_length, no_of_bytes, f->sym.mem_type,
f->sym.type ? f->sym.type->name : "NULL", oldofs, tokenarray[i].tokpos ));
/* If current item is a literal enclosed in <> or {}, just use this
* item. Else, use all items until a comma or EOL is found.
*/
if ( tokenarray[i].token != T_STRING ||
( tokenarray[i].string_delim != '<' &&
tokenarray[i].string_delim != '{' )) {
/* scan for comma or final. Ignore commas inside DUP argument */
for( j = i, lvl = 0, bArray = FALSE; tokenarray[j].token != T_FINAL; j++ ) {
if ( tokenarray[j].token == T_OP_BRACKET )
lvl++;
else if ( tokenarray[j].token == T_CL_BRACKET )
lvl--;
else if ( lvl == 0 && tokenarray[j].token == T_COMMA )
break;
else if ( tokenarray[j].token == T_RES_ID && tokenarray[j].tokval == T_DUP )
bArray = TRUE;
else if ( no_of_bytes == 1 && tokenarray[j].token == T_STRING &&
( tokenarray[j].string_delim == '"' || tokenarray[j].string_delim == '\'' ))
bArray = TRUE;
}
*pi = j;
if ( bArray == FALSE ) {
DebugMsg1(("InitializeArray(%s): error, array init requires DUP, string or literal\n", f->sym.name ));
return( EmitErr( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM, tokenarray[i].tokpos ) );
}
lvl = tokenarray[j].tokpos - tokenarray[i].tokpos;
/* 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 == '\'' ) )
rc = NOT_ERROR;
else {
lvl = i; /* i must remain the start index */
rc = data_item( &lvl, tokenarray, NULL, no_of_bytes, f->sym.type, 1, FALSE, f->sym.mem_type & MT_FLOAT, FALSE, j );
}
} else {
/* initializer is a literal */
(*pi)++;
old_tokencount = Token_Count;
j = Token_Count + 1;
/* if the string is empty, use the default initializer */
if ( tokenarray[i].stringlen == 0 ) {
Token_Count = Tokenize( (char *)f->ivalue, j, tokenarray, TOK_RESCAN );
} else {
Token_Count = Tokenize( tokenarray[i].string_ptr, j, tokenarray, TOK_RESCAN );
}
rc = data_item( &j, tokenarray, NULL, no_of_bytes, f->sym.type, 1, FALSE, f->sym.mem_type & MT_FLOAT, FALSE, Token_Count );
Token_Count = old_tokencount;
}
/* get size of array items */
no_of_bytes = GetCurrOffset() - oldofs ;
DebugMsg1(("InitializeArray(%s): new offset=%X\n", f->sym.name, no_of_bytes + oldofs ));
if ( no_of_bytes > f->sym.total_size ) {
DebugMsg1(("InitializeArray(%s): error, cursize=%u total_size=%u\n", f->sym.name, no_of_bytes, f->sym.total_size ));
EmitErr( TOO_MANY_INITIAL_VALUES_FOR_ARRAY, tokenarray[i].tokpos );
rc = ERROR;
} else if ( no_of_bytes < f->sym.total_size ) {
char filler = NULLC;
DebugMsg1(("InitializeArray: remaining bytes=%" I32_SPEC "u\n", f->sym.total_size - no_of_bytes ));
if ( CurrSeg && CurrSeg->e.seginfo->segtype == SEGTYPE_BSS )
SetCurrOffset( CurrSeg, f->sym.total_size - no_of_bytes, TRUE, TRUE );
else {
/* 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->ivalue[0] == '"' || f->ivalue[0] == '\'' ) )
filler = ' ';
FillDataBytes( filler, f->sym.total_size - no_of_bytes );
}
}
DebugMsg1(("InitializeArray(%s) exit, curr ofs=%X\n", f->sym.name, GetCurrOffset() ));
return( rc );
}
/* initialize a STRUCT/UNION/RECORD data item
* index: index of initializer literal
* symtype: type of data item
* embedded: is != NULL if proc is called recursively
* up to v2.08, this proc did emit ASM lines with simple types
* to actually "fill" the structure.
* since v2.09, it calls data_item() directly.
* 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 sfield *f;
int_32 nextofs;
int i;
int old_tokencount = Token_Count;
char *old_stringbufferend = StringBufferEnd;
int lvl;
uint_64 dst128Hi;
uint_64 dst128Lo;
uint_64 dwRecIHi;
uint_64 dwRecILo;
uint_64 dwRecInit;
//#else
// uint_32 dwRecInit;
//#endif
bool is_record_set;
struct expr opndx;
//char line[MAX_LINE_LEN];
DebugMsg1(("InitStructuredVar(%s) enter, total_size=%" I32_SPEC "u, init=>%s<, embedded=%s, alignm=%u\n",
symtype->sym.name, symtype->sym.total_size, tokenarray[index].string_ptr, embedded ? embedded->name : "NULL", symtype->e.structinfo->alignment ));
/**/myassert( symtype->sym.state == SYM_TYPE && symtype->sym.typekind != TYPE_TYPEDEF );
if ( tokenarray[index].token == T_STRING ) {
/* v2.08: no special handling of {}-literals anymore */
if ( tokenarray[index].string_delim != '<' &&
tokenarray[index].string_delim != '{' ) {
return( EmitError( MISSING_ANGLE_BRACKET_OR_BRACE_IN_LITERAL ) );
}
i = Token_Count + 1;
//strcpy( line, tokenarray[index].string_ptr );
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++;
} else if ( embedded &&
( tokenarray[index].token == T_COMMA ||
tokenarray[index].token == T_FINAL)) {
i = Token_Count;
} else {
return( EmitErr( INITIALIZER_MUST_BE_A_STRING_OR_SINGLE_ITEM, embedded ? embedded->name : "" ) );
}
if ( symtype->sym.typekind == TYPE_RECORD ) {
dwRecInit = 0;
dst128Hi = 0; /* clear Hi 64 bit for the 128 bit RECORD */
dst128Lo = 0; /* clear Lo 64 bit for the 128 bit RECORD */
is_record_set = FALSE;
}
//__debugbreak();
/* scan the STRUCT/UNION/RECORD's members */
for( f = symtype->e.structinfo->head; f != NULL; f = f->next ) {
DebugMsg1(("InitStructuredVar(%s) field=%s ofs=%" I32_SPEC "u total_size=%" I32_SPEC "u total_len=%" I32_SPEC "u value=>%s< >%s<\n",
symtype->sym.name,
f->sym.name,
f->sym.offset,
f->sym.total_size,
f->sym.total_length,
//f->initializer ? f->initializer : "NULL",
f->ivalue, tokenarray[i].tokpos ));
/* 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->ivalue[0] ) {
int j = Token_Count + 1;
int max_item = Tokenize( f->ivalue, 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 );
/* fixme: max bits in 64-bit is 64 - see MAXRECBITS! */
if ( f->sym.total_size < 32 ) {
uint_32 dwMax = (1 << f->sym.total_size);
if ( opndx.value >= dwMax )
EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, f->sym.name );
}
if (symtype->sym.mem_type == MT_OWORD){
dwRecIHi = 0; /* clear Hi 64 bit for the 128 bit RECORD */
dwRecILo = 0; /* clear Lo 64 bit for the 128 bit RECORD */
ShiftLeft(&dwRecIHi,&dwRecILo,opndx.llvalue,f->sym.offset);
dst128Hi |= dwRecIHi; /* OR Hi 64 bit for the 128 bit RECORD */
dst128Lo |= dwRecILo; /* clear Lo 64 bit for the 128 bit RECORD */
}
else
dwRecInit |= opndx.llvalue << f->sym.offset;
//} else if ( f->init_dir == NULL ) { /* embedded struct? */
} else if ( f->ivalue[0] == NULLC ) { /* 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 {
//struct asym *sym;
uint_32 no_of_bytes = SizeFromMemtype( f->sym.mem_type, USE_EMPTY, f->sym.type );
/* v2.09: check for empty <> or {} string if a struct/union is embedded */
//for ( sym = f->sym->type; sym && sym->type; sym = sym->type );
if ( tokenarray[i].token == T_FINAL || tokenarray[i].token == T_COMMA ) {
int tc = Token_Count;
int j = Token_Count+1;
Token_Count = Tokenize( f->ivalue, j, tokenarray, TOK_RESCAN );
data_item( &j, tokenarray, NULL, no_of_bytes, f->sym.type, 1, FALSE, f->sym.mem_type & MT_FLOAT, FALSE, Token_Count );
Token_Count = tc;
} else {
char c;
int j = i;
/* ignore commas enclosed in () ( might occur inside DUP argument! ).
*/
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 );
} else
if ( ERROR == data_item( &j, tokenarray, NULL, no_of_bytes, f->sym.type, 1, FALSE, f->sym.mem_type & MT_FLOAT, FALSE, i ) ) {
EmitErr( INVALID_DATA_INITIALIZER, f->sym.name );
}
}
}
/* 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=%" I32_SPEC "X total=%" I32_SPEC "X nextofs=%" I32_SPEC "X\n",
f->sym.name, f->sym.offset, f->sym.total_size, nextofs ));
SetCurrOffset( CurrSeg, nextofs - (f->sym.offset + f->sym.total_size), TRUE, TRUE );
}
}
/* 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 ) {
int no_of_bytes;
switch ( symtype->sym.mem_type ) {
case MT_BYTE: no_of_bytes = 1; break;
case MT_WORD: no_of_bytes = 2; break;
#if AMD64_SUPPORT
case MT_QWORD: no_of_bytes = 8; break;
case MT_OWORD: no_of_bytes = 16; break;
#endif
default: no_of_bytes = 4;
}
if (is_record_set){
if (symtype->sym.mem_type == MT_OWORD){
/* output 128 bit data for RECORD */
OutputDataBytes((uint_8 *)&dst128Lo, no_of_bytes / 2);
OutputDataBytes((uint_8 *)&dst128Hi, no_of_bytes / 2);
}
else
OutputDataBytes((uint_8 *)&dwRecInit, no_of_bytes);
}
else
SetCurrOffset( CurrSeg, no_of_bytes, TRUE, TRUE );
}
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 */
Token_Count = old_tokencount;
StringBufferEnd = old_stringbufferend;
DebugMsg1(("InitStructuredVar(%s) exit, current ofs=%" I32_SPEC "X\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 );
}
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[32];
char tstr[32];
if ( opnd->mem_type != MT_EMPTY ) {
int i;
memset( buffer, 0, sizeof( buffer ) );
i = SizeFromMemtype( opnd->mem_type, USE_EMPTY, NULL );
if ( i > size )
EmitErr( INITIALIZER_OUT_OF_RANGE );
else {
atofloat( buffer, opnd->float_tok->string_ptr, i , opnd->negative, opnd->float_tok->floattype );
}
}
else if (opnd->kind == EXPR_FLOATI)
{
snprintf(tstr, sizeof(tstr), "%f", opnd->fvalue);
atofloat( buffer, tstr, size, opnd->negative, 0 );
}
else {
atofloat( buffer, opnd->float_tok->string_ptr, size, opnd->negative, opnd->float_tok->floattype );
}
OutputDataBytes( buffer, size );
return;
}
/*
* initialize a data item or struct member;
* - start_pos: contains tokenarray[] index [in/out]
* - tokenarray[]: token array
*
* - sym:
* for data item: label (may be NULL)
* for struct member: field/member (is never NULL)
*
* - no_of_bytes: size of item in bytes
* - type_sym:
* for data item: if != NULL, item is a STRUCT/UNION/RECORD.
* for struct member: if != NULL, item is a STRUCT/UNION/RECORD/TYPEDEF.
*
* - dup: array size if called by DUP operator, otherwise 1
* - inside_struct: TRUE=inside a STRUCT declaration
* - is_float: TRUE=item is float
* - first: TRUE=first item in a line
*
* 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, uint_32 no_of_bytes, const struct asym *type_sym, uint_32 dup, bool inside_struct, bool is_float, bool first, int end )
/***************************************************************************************************************************************************************************************************************/
{
int i;
int j;
int string_len;
uint_32 total = 0;
bool initwarn = FALSE;
bool half = FALSE;
//unsigned int count;
uint_8 *pchar,*p;
char tmp;
enum fixup_types fixup_type;
struct fixup *fixup;
struct expr opndx;
uint_16 buff[256];
DebugMsg1(("data_item( idx=%u [%s], label=%s, no_of_bytes=%" I32_SPEC "u, type=%s, dup=%" I32_SPEC "Xh, inside_struct=%u, is_float=%u ) enter\n",
*start_pos, tokenarray[*start_pos].tokpos, sym ? sym->name : "NULL",
no_of_bytes, type_sym ? type_sym->name : "NULL",
dup, inside_struct, is_float ));
for ( ; dup; dup-- ) {
i = *start_pos;
next_item: /* <--- continue scan if a comma has been detected */
/* 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( type_sym ) {
DebugMsg1(("data_item(%s): literal/brace found: >%s<, inside_struct=%u, no_of_bytes=%" I32_SPEC "u, curr_ofs=%" I32_SPEC "X\n",
type_sym->name, tokenarray[i].string_ptr, inside_struct, no_of_bytes, GetCurrOffset()));
/* it's either a real data item - then inside_struct is FALSE -
* or a structure FIELD of arbitrary type.
*
* v2.10: regression in v2.09: alias types weren't skipped for InitStructuredVar()
*/
while ( type_sym->type ) type_sym = type_sym->type;
if( inside_struct == FALSE ) {
if ( InitStructuredVar( i, tokenarray, (struct dsym *)type_sym, NULL ) == ERROR )
return( ERROR );
} else {
/* v2.09: emit a warning if a TYPEDEF member is a simple type,
* but is initialized with a literal.
* Note: Masm complains about such literals only if the struct is instanced OR -Fl is set.
* fixme: the best solution is to always set type_sym to NULL if
* the type is a TYPEDEF. if the item is a struct member, then
* sym is ALWAYS != NULL and the symbol's type can be gained from there.
* v2.10: aliases are now already skipped here ( see above ).
*/
//while ( type_sym->type ) /* skip alias types */
// type_sym = type_sym->type;
if( type_sym->typekind == TYPE_TYPEDEF && Parse_Pass == PASS_1 )
EmitWarn( 2, COUNT_MUST_BE_POSITIVE_OR_ZERO, tokenarray[i].tokpos );
}
total++;
i++;
goto item_done;
#if 0 /* v2.08: just let EvalOperand() emit 'Unexpected literal...' error */
} else {
DebugMsg(("data_item: invalid string initializer >%s<\n", tokenarray[i].tokpos ));
/* Masm accepts invalid initializer strings if they are actually never used
* for initialization.
*/
if( inside_struct && Parse_Pass == PASS_1 ) {
EmitWarn( 2, UNEXPECTED_LITERAL_FOUND_IN_EXPRESSION, tokenarray[i].tokpos );
tokenarray[i].token = T_QUESTION_MARK;
}
#endif
}
}
if (tokenarray[i].token == T_QUESTION_MARK)
{
opndx.kind = EXPR_EMPTY;
}
else
if ( EvalOperand( &i, tokenarray, end, &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, unexpected kind=%u of DUP's first operand\n", opndx.kind ));
/* v2.09: emit a better error msg if a forward ref was used */
if ( opndx.sym && opndx.sym->state == SYM_UNDEFINED )
EmitErr( SYMBOL_NOT_DEFINED, opndx.sym->name );
else
EmitError( CONSTANT_EXPECTED );
return( ERROR );
}
/* max dup is 0x7fffffff */
if ( opndx.value < 0 ) {
return( EmitError( COUNT_MUST_BE_POSITIVE_OR_ZERO ) );
}
i++;
if( tokenarray[i].token != T_OP_BRACKET ) {
DebugMsg(("data_item error, missing '('\n"));
return( EmitErr( EXPECTED, "(" ) );
}
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=%" I32_SPEC "Xh, calling data_item()\n", sym ? sym->name : "NULL", opndx.uvalue ));
if ( data_item( &i, tokenarray, sym, no_of_bytes, type_sym, opndx.uvalue, inside_struct, is_float, first, end ) == ERROR ) {
DebugMsg(("data_item(%s): op DUP, count=%" I32_SPEC "Xh, 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"));
return( EmitErr( EXPECTED, ")" ) );
}
/* v2.09: SIZE and LENGTH actually don't return values for "first initializer, but
* the "first dimension" values
* v2.11: fixme: if the first dimension is 0 ( opndx.value == 0),
* Masm ignores the expression - may be a Masm bug!
*/
if ( sym && first && Parse_Pass == PASS_1 ) {
sym->first_size = opndx.value * no_of_bytes;
sym->first_length = opndx.value;
first = FALSE;
}
i++;
goto item_done;
}
/* a STRUCT/UNION/RECORD data item needs a literal as initializer */
/* v2.06: changed */
//if( type_sym != NULL && inside_struct == FALSE ) {
//if( type_sym != NULL && type_sym->typekind != TYPE_TYPEDEF ) {
if( type_sym ) {
/* v2.10: use a temp symbol, so the original type name can be displayed in the error msg. */
const struct asym *tmp = type_sym;
/* v2.10: check if target type is a struct/union/record; if yes, it's an error. */
while ( tmp->type ) tmp = tmp->type;
if ( tmp->typekind != TYPE_TYPEDEF ) {
DebugMsg1(("data_item: error, type=%s needs literal, >%s<\n", type_sym->name, tokenarray[i].tokpos ));
return( EmitErr( STRUCTURE_IMPROPERLY_INITIALIZED, type_sym->name ) );
}
}
/* 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;
total += dup;
dup = 1; /* force loop exit */
} else {
total++;
}
if( !inside_struct ) {
SetCurrOffset( CurrSeg, opndx.uvalue, TRUE, TRUE );
}
i++;
goto item_done;
}
/* warn about initialized data in BSS/AT segments */
if ( Parse_Pass == PASS_2 &&
inside_struct == 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].tokpos );
else
EmitError( SYNTAX_ERROR );
return( ERROR );
case EXPR_FLOAT:
DebugMsg1(("data_item.FLOAT: >%s<, inside_struct=%u, no_of_bytes=%u, curr_ofs=%X\n",
opndx.float_tok->string_ptr, inside_struct, no_of_bytes, GetCurrOffset()));
if (!inside_struct)
output_float( &opndx, no_of_bytes );
total++;
break;
case EXPR_CONST:
if ( is_float ) {
opndx.fvalue = (float)opndx.value;
opndx.kind = EXPR_FLOATI;
opndx.negative = (opndx.fvalue < 0) ? 1 : 0;
if (opndx.negative)
opndx.fvalue *= -1;
output_float( &opndx, no_of_bytes); /* Coerce const integer value to float in data definitions */
total++;
break;
//return( EmitError( MUST_USE_FLOAT_INITIALIZER ) );
}
/* a string returned by the evaluator (enclosed in quotes!)? */
if ( opndx.quoted_string ) {
DebugMsg1(("data_item.CONST: string found: >%s<, inside_struct=%u, no_of_bytes=%u, curr_ofs=%X\n",
opndx.quoted_string->string_ptr, inside_struct, 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 ( inside_struct ) {
/* when the struct is declared, it's no error -
* but won't be accepted when the struct is instanced.
* v2.07: don't modify string_len! Instead
* mark field as array!
*/
//string_len = 1;
sym->isarray = TRUE;
} else {
return( EmitError( EMPTY_STRING ) ); /* MASM doesn't like "" */
}
}
/* 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 (Options.masm51_compat || Options.strict_masm_compat || !Options.literal_strings)
{
if (string_len > no_of_bytes)
return(EmitError(INITIALIZER_OUT_OF_RANGE));
}
else
{
if (string_len > no_of_bytes && sym && sym->mem_type != MT_WORD)
return(EmitError(INITIALIZER_OUT_OF_RANGE));
/* if characters are not single byte, 2 bytes are used for 1 size v2.38 */
p = pchar;
half = FALSE;
for (j = 0; j < string_len; j++,p++){
if ((unsigned char)*p > 0x7F){
half = TRUE;
break;
}
}
if (half){
memset( &buff, 0, string_len * 2 );
j = UTF8toWideChar(pchar, string_len, NULL,(unsigned short *) &buff, string_len);
opndx.quoted_string->stringlen = j;
string_len = j;
sym->mem_type = MT_BYTE; /* each byte must be stored without zeros between */
/* total has to be devided by 2 for the length */
}
}
}
if( sym && Parse_Pass == PASS_1 && string_len > 0 ) {
total++;
if ( no_of_bytes == 1 && string_len > 1 )
{
total += ( string_len - 1 );
sym->isarray = TRUE; /* v2.07: added */
if ( first ) {
sym->first_length = 1;
sym->first_size = 1;
first = FALSE; /* avoid to touch first_xxx fields below */
}
}
else if (no_of_bytes == 2 && string_len > 1)
{
sym->isarray = TRUE;
total += (string_len - 1);
if (first)
{
sym->first_length = 1;
sym->first_size = 2;
first = FALSE;
}
}
}
if( !inside_struct )
{
/* anything bigger than a byte must be stored in little-endian format -- LSB first */
if (Options.masm51_compat || Options.strict_masm_compat || !Options.literal_strings)
{
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
{
if (string_len > 1 && no_of_bytes > 1 && sym && sym->mem_type == MT_WORD)
{
OutputInterleavedDataBytes(pchar, string_len);
}
else
{
if (string_len > 1 && no_of_bytes > 1)
{
if (half) /* no need for little_endian, already converted, v2.38 */
OutputDataBytes((uint_8*)&buff, j * 2);
}
else
{
if(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=%" I32_SPEC "Xh, no_of_bytes=%u, curr_ofs=%" I32_SPEC "X\n", opndx.value, no_of_bytes, GetCurrOffset()));
if( !inside_struct ) {
/* the evaluator cannot handle types with size > 16.
* so if a (simple) type is larger ( YMMWORD? ),
* 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 %" I64_SPEC "X_%016" I64_SPEC "X\n", opndx.hlvalue, opndx.llvalue));
return( EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, opndx.sym ? opndx.sym->name : "" ) );
}
} else if ( no_of_bytes == 10 ) {
//if ( opndx.hlvalue > 0xffff ) {
if ( opndx.hlvalue > 0xffff && opndx.hlvalue < -0xffff ) {
return( EmitErr( INITIALIZER_MAGNITUDE_TOO_LARGE, opndx.sym ? opndx.sym->name : "" ) );
}
}
}
}
total++;
}
break;
case EXPR_ADDR:
/* since a fixup will be created, 8 bytes is max.
* there's no way to define an initialized tbyte "far64" address,
* because there's no fixup available for the selector part.
*/
if ( no_of_bytes > sizeof(uint_64) ) {
EmitErr( INVALID_DATA_INITIALIZER, sym ? sym->name : "" );
break;
}
/* indirect addressing (incl. stack variables) is 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 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: %" I64_SPEC "X\n", opndx.value64 ));
return( EmitConstError( &opndx ) );
}
if ( is_float ) {
DebugMsg(("data_item.ADDR: error, is_float=%u\n", is_float ));
EmitError( MUST_USE_FLOAT_INITIALIZER );
break;
}
total++;
/* for STRUCT fields, don't emit anything! */
if ( inside_struct ) {
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:
/* forward reference? */
if ( Parse_Pass == PASS_1 && opndx.sym && opndx.sym->state == SYM_UNDEFINED ) {
DebugMsg(("data_item.ADDR: forward reference + OFFSET operator + DB -> may become error in Pass 2\n" ));
fixup_type = FIX_VOID; /* v2.10: was regression in v2.09 */
} else {
DebugMsg(("data_item.ADDR: error, an 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