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expreval.c
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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: expression evaluator.
*
****************************************************************************/
#include <stddef.h>
#include <ctype.h>
#include "globals.h"
#include "parser.h"
#include "reswords.h"
#include "expreval.h"
#include "segment.h"
#include "proc.h"
#include "assume.h"
#include "tokenize.h"
#include "types.h"
#include "label.h"
#include "atofloat.h"
#include "myassert.h"
#include "lqueue.h"
#include "data.h"
#include "symbols.h"
#if defined(WINDOWSDDK)
#define PRIx64 "llx"
#else
#include <inttypes.h>
#endif
#define ALIAS_IN_EXPR 1 /* allow alias names in expression */
#define UNARY_PLUSMINUS 0
#define BINARY_PLUSMINUS 1
/* activate if a detailed error location is needed and -dt cant be used */
#if 0
#define ERRLOC( i ) printf("Error at %s.%u: %u >%s< >%s<\n", __FILE__, __LINE__, i, ModuleInfo.tokenarray[i].string_ptr, ModuleInfo.tokenarray[0].tokpos )
//#undef DebugMsg1
//#define DebugMsg1( x ) printf x
#else
#define ERRLOC( i )
#endif
#if STACKBASESUPP==0
extern enum special_token basereg[];
#else
extern uint_32 StackAdj;
#endif
bool gmaskflag;
#ifdef DEBUG_OUT
static int evallvl = 0;
#endif
extern uint_32 GetCurrOffset( void );
extern void ShiftLeft (uint_64 *dstHi, uint_64 *dstLo,uint_64 num, int pos);
//extern ret_code data_item( int *, struct asm_tok[], struct asym *, uint_32, const struct asym *, uint_32, bool inside_struct, bool, bool, int );
extern ret_code BackPatch( struct asym *sym );
/* the following static variables should be moved to ModuleInfo. */
static struct asym *thissym; /* helper symbol for THIS operator */
static struct asym *nullstruct; /* used for T_DOT if second op is a forward ref */
static struct asym *nullmbr; /* used for T_DOT if "current" struct is a forward ref */
static int (* fnEmitErr)( int, ... );
static int noEmitErr( int msg, ... );
/* code label type values - returned by SIZE and TYPE operators */
enum labelsize {
LS_SHORT = 0xFF01, /* it's documented, but can a label be "short"? */
//LS_NEAR16 = 0xFF02, /* v2.09: the near values are calculated */
//LS_NEAR32 = 0xFF04,
//LS_NEAR64 = 0xFF08,
LS_FAR16 = 0xFF05,
LS_FAR32 = 0xFF06,
};
static void init_expr( struct expr *opnd )
/****************************************/
{
opnd->value = 0;
opnd->hvalue = 0;
opnd->hlvalue = 0;
opnd->quoted_string = NULL;
opnd->base_reg = NULL;
opnd->idx_reg = NULL;
opnd->label_tok = NULL;
opnd->override = NULL;
opnd->instr = EMPTY;
opnd->kind = EXPR_EMPTY;
opnd->mem_type = MT_EMPTY;
opnd->scale = 0;
opnd->Ofssize = USE_EMPTY;
opnd->flags1 = 0;
opnd->sym = NULL;
opnd->mbr = NULL;
opnd->type = NULL;
opnd->isptr = FALSE;
}
static ret_code GetMask128(struct expr *opnd1, int index, struct asm_tok tokenarray[])
{
uint_64 dst128Hi = opnd1->hlvalue;
uint_64 dst128Lo = opnd1->llvalue;
struct asym *lbl = NULL;
char buffer[MAX_LINE_LEN];
char buffer1[MAX_LINE_LEN];
char buff[18];
char *ptr;
int i= Token_Count; /* i must remain the start index */
strcpy( buffer,tokenarray->tokpos);
/* if GTEMP is not created yet do it now */
if (Parse_Pass == PASS_1){
lbl = SymSearch("GMASK");
if (lbl == NULL){
strcpy(buffer1, ".data");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
strcpy(buffer1, "GMASK OWORD 0x");
num2hex64(dst128Hi, buff);
strcat(buffer1, buff);
num2hex64(dst128Lo, buff);
strcat(buffer1, buff);
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
strcpy(buffer1, ".code");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
ptr = tokenarray->tokpos;
while (*ptr != '\0')*(ptr++) = '\0';
ptr = buffer;
while (*ptr != ',')ptr++;
ptr++;
*ptr = '\0';
strcat(ptr, "GMASK");
AddLineQueue(buffer);
strcpy(tokenarray->tokpos, buffer);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
tokenarray[Token_Count+1].token = T_FINAL;
ParseLine(tokenarray);
}
else{ /* global variable GMASK exist, reuse it */
num2hex64(dst128Lo, buff);
strcpy(buffer1, "mov dword ptr ");
ptr = buffer1 + 14;
strcpy(ptr, "GMASK"); /* mov dword ptr rubi.rc */
ptr += 5;
strcpy(ptr, ", LOW32(0x"); /* mov dword ptr rubi.rc, LOW32( */
ptr += 10;
strcat(ptr, buff); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
strcat(ptr, ")");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* second DWORD */
ptr = buffer1 + 19;
strcpy(ptr, "+4 ,HIGH32(0x"); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 13;
strcat(ptr, buff); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
strcat(ptr, ")");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* third DWORD */
num2hex64(dst128Hi, buff);
ptr = buffer1 + 19;
strcpy(ptr, "+8, LOW32(0x"); /* mov dword ptr rubi.rc, LOW32( */
ptr += 12;
strcat(ptr, buff); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
strcat(ptr, ")");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* forth DWORD */
ptr = buffer1 + 19;
strcpy(ptr, "+8+4, HIGH32(0x"); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 15;
strcat(ptr, buff); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
strcat(ptr, ")");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
ptr = tokenarray->tokpos;
while (*ptr != '\0')*(ptr++) = '\0';
ptr = buffer;
while (*ptr != ',')ptr++;
ptr++;
*ptr = '\0';
strcat(ptr, "GMASK");
strcpy(tokenarray->tokpos, buffer);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
tokenarray[Token_Count+1].token = T_FINAL;
ParseLine(tokenarray);
}
}
//strcpy(buffer1, "nop");
strcpy(tokenarray->tokpos, "por ");
strcat(tokenarray->tokpos,tokenarray[1].string_ptr);
strcat(tokenarray->tokpos,", ");
strcat(tokenarray->tokpos,tokenarray[1].string_ptr);
//strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
tokenarray[Token_Count+1].token = T_FINAL;
gmaskflag = TRUE;
DebugMsg1(("GetMask128(%s) exit, current ofs=%" I32_SPEC "X\n", GetCurrOffset() ));
return( NOT_ERROR );
}
/* InitRecordVar is used for inline initialise RECORD to be compatibile with masm, v2.41
* now it can be used as :
* mov al, COLOR<1, 7, 0, 1> ;1 111 0 001 = F1
* mov cobalt.rc, COLOR<1, 7, 0, 1> ;1 111 0 001 = F1
*/
static ret_code InitRecordVar( struct expr *opnd1, int index, struct asm_tok tokenarray[], const struct dsym *symtype )
/****************************************************************************************************************************/
{
char *ptr, *ptr2, *ptr3;
struct sfield *f;
int_32 nextofs;
int i;
int nlabel;
struct asym *sym = NULL;
struct asym *lbl = NULL;
#if AMD64_SUPPORT
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 buffer[MAX_LINE_LEN];
char buffer1[MAX_LINE_LEN];
char buff[16];
int tok_start = index - 1;
int len;
char *oldptr;
/**/myassert( symtype->sym.state == SYM_TYPE && symtype->sym.typekind != TYPE_TYPEDEF );
if ( tokenarray[index].token == T_STRING ) {
if ( tokenarray[index].string_delim != '<' &&
tokenarray[index].string_delim != '{' ) {
return( EmitError( MISSING_ANGLE_BRACKET_OR_BRACE_IN_LITERAL ) );
}
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 ( 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;
}
/* scan the RECORD's members */
for( f = symtype->e.structinfo->head; f != NULL; f = f->next ) {
DebugMsg1(("InitRecordVar(%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->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 AMD64_SUPPORT
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
dwRecInit |= opndx.value << f->sym.offset;
#endif
}
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++;
}
/* 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(("InitRecordVar: 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 */
opnd1->llvalue = dwRecInit;
if (tokenarray[1].token == T_REG) {
ptr=tokenarray->tokpos + 4;
while (isspace(*ptr))ptr++;
if (*ptr == 'r' || *ptr == 'R')
goto all;
else if (opnd1->llvalue < 0x100000000)
goto all;
else
EmitErr(INITIALIZER_OUT_OF_RANGE);
all:
/* mov dword ptr rubi.rc, LOW32(dst128Lo)
* mov dword ptr rubi.rc+4 ,HIGH32(dst128Lo)
* mov dword ptr rubi.rc+8 , LOW32(dst128Hi)
* mov dword ptr rubi.rc+8+4,HIGH32(dst128Hi) */
if (0 == _stricmp(tokenarray->string_ptr, "movxmmr128")){
strcpy( buffer,tokenarray->tokpos+10);
ptr = buffer;
while (*ptr != ',')ptr++;
*ptr = '\0';
ptr++;
/* if not created global variable GTEMP create it */
lbl = SymSearch("GTEMP");
if (lbl == NULL){
strcpy(buffer1, ".data");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
sprintf(buff, "GTEMP");
strcpy(buffer1,buff);
strcat(buffer1,ptr);
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
strcpy(buffer1, ".code");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
}
else{ /* global variable GTEMP exist, reuse it */
strcpy(buffer1, "mov dword ptr ");
ptr = buffer1 + 14;
strcpy(ptr, "GTEMP"); /* mov dword ptr rubi.rc */
ptr += 5;
strcpy(ptr, ", LOW32("); /* mov dword ptr rubi.rc, LOW32( */
ptr += 8;
sprintf(ptr, "0x%" PRIx64, dst128Lo); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* second DWORD */
strcpy(buffer1, "mov dword ptr ");
ptr = buffer1 + 14;
strcpy(ptr, "GTEMP"); /* mov dword ptr rubi.rc */
ptr += 5;
strcpy(ptr, "+4 ,HIGH32("); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 11;
sprintf(ptr, "0x%" PRIx64, dst128Lo); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* third DWORD */
strcpy(buffer1, "mov dword ptr ");
ptr = buffer1 + 14;
strcpy(ptr, "GTEMP"); /* mov dword ptr rubi.rc */
ptr += 5;
strcpy(ptr, "+8, LOW32("); /* mov dword ptr rubi.rc, LOW32( */
ptr += 10;
sprintf(ptr, "0x%" PRIx64, dst128Hi); /* mov dword ptr rubi.rc, LOW32(dst128Hi */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
/* forth DWORD */
strcpy(buffer1, "mov dword ptr ");
ptr = buffer1 + 14;
strcpy(ptr, "GTEMP"); /* mov dword ptr rubi.rc */
ptr += 5;
strcpy(ptr, "+8+4, HIGH32("); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 13;
sprintf(ptr, "0x%" PRIx64, dst128Hi); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
ParseLine(tokenarray);
}
/* now write new line with "movups xmm1, GTEMP" */
strcpy(buffer1, MOVE_UNALIGNED_FLOAT());
strcat(buffer1,buffer);
strcat(buffer1," , ");
strcat(buffer1,"GTEMP");
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
goto exit;
}else if (0 == _stricmp(tokenarray->string_ptr, "mov128")){
strcpy( buffer,tokenarray->tokpos+6);
ptr = buffer;
while (*ptr != ',')ptr++;
*ptr = '\0';
strcpy(buffer1, "mov dword ptr " );
ptr = buffer1+14;
strcpy(ptr, buffer); /* mov dword ptr rubi.rc */
ptr += strlen(buffer);
strcpy(ptr, ", LOW32("); /* mov dword ptr rubi.rc, LOW32( */
ptr += 8;
sprintf(ptr, "0x%" PRIx64, dst128Lo); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
/* second DWORD */
strcpy(buffer1, "mov dword ptr " );
ptr = buffer1+14;
strcpy(ptr, buffer); /* mov dword ptr rubi.rc */
ptr += strlen(buffer);
strcpy(ptr, "+4 ,HIGH32("); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 11;
sprintf(ptr, "0x%" PRIx64, dst128Lo); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
/* third DWORD */
strcpy(buffer1, "mov dword ptr " );
ptr = buffer1+14;
strcpy(ptr, buffer); /* mov dword ptr rubi.rc */
ptr += strlen(buffer);
strcpy(ptr, "+8, LOW32("); /* mov dword ptr rubi.rc, LOW32( */
ptr += 10;
sprintf(ptr, "0x%" PRIx64, dst128Hi); /* mov dword ptr rubi.rc, LOW32(dst128Hi */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
ParseLine(tokenarray);
/* forth DWORD */
strcpy(buffer1, "mov dword ptr " );
ptr = buffer1+14;
strcpy(ptr, buffer); /* mov dword ptr rubi.rc */
ptr += strlen(buffer);
strcpy(ptr, "+8+4, HIGH32("); /* mov dword ptr rubi.rc, HIGH32( */
ptr += 13;
sprintf(ptr, "0x%" PRIx64, dst128Hi); /* mov dword ptr rubi.rc, LOW32(dst128Lo */
while (*ptr)ptr++;
*ptr = ')';
ptr++;
*ptr = '\0';
strcpy(tokenarray->tokpos, buffer1);
Token_Count = Tokenize( tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT );
goto exit;
}
else{
strcpy(buffer, tokenarray->tokpos);
ptr = strstr(buffer, tokenarray[tok_start].string_ptr);
oldptr = ptr;
len = 0;
while (*ptr != '>')
{
ptr++;
len++;
}
ptr = tokenarray->tokpos + (oldptr - buffer);
for (i = 0; i <= len; i++)
*ptr++ = 0x20;
ptr = buffer;
sprintf(ptr, "0x%" PRIx64, dwRecInit);
oldptr = tokenarray->tokpos + (oldptr - buffer);
len = strlen(buffer);
for (i = 0; i < len; i++)
*oldptr++ = *ptr++;
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);
goto exit;
}
}
else if (opnd1->llvalue < 0x100000000)
goto all;
else
{
goto all;
/* strcpy(buffer, tokenarray->tokpos);
ptr = buffer;
while (*ptr != ',') ptr++;
ptr++;
sprintf(ptr, "0x%" PRIx64, dwRecInit);
strcpy(tokenarray->tokpos, buffer);
Token_Count = Tokenize(tokenarray->tokpos, 0, tokenarray, TOK_DEFAULT);*/
}
exit:
DebugMsg1(("InitRecordVar(%s) exit, current ofs=%" I32_SPEC "X\n", symtype->sym.name, GetCurrOffset() ));
return( NOT_ERROR );
}
//push 253
//push 254
//movq xmm1, [esp]
static void TokenAssign( struct expr *opnd1, const struct expr *opnd2 )
/*********************************************************************/
{
#if 1
/* note that offsetof() is used. This means, don't change position
of field <type> in expr! */
memcpy( opnd1, opnd2, offsetof( struct expr, type ) );
#else
opnd1->llvalue = opnd2->llvalue;
opnd1->hlvalue = opnd2->hlvalue;
opnd1->quoted_string = opnd2->quoted_string; /* probably useless */
opnd1->base_reg = opnd2->base_reg;
opnd1->idx_reg = opnd2->idx_reg;
opnd1->label_tok = opnd2->label_tok;
opnd1->override = opnd2->override;
opnd1->instr = opnd2->instr;
opnd1->kind = opnd2->kind;
opnd1->mem_type = opnd2->mem_type;
opnd1->scale = opnd2->scale;
opnd1->Ofssize = opnd2->Ofssize;
opnd1->flags1 = opnd2->flags1;
opnd1->sym = opnd2->sym;
opnd1->mbr = opnd2->mbr;
// opnd1->type = opnd2->type;
#endif
}
//#define BRACKET_PRECEDENCE 1
//#define PTR_PRECEDENCE 4
//#define PLUS_PRECEDENCE 9
#define CMP_PRECEDENCE 10
static int get_precedence( const struct asm_tok *item )
/*****************************************************/
{
/* The following table is taken verbatim from MASM 6.1 Programmer's Guide,
* page 14, Table 1.3.
* 1 (), []
* 2 LENGTH, SIZE, WIDTH, MASK, LENGTHOF, SIZEOF
* 3 . (structure-field-name operator)
* 4 : (segment override operator), PTR
* 5 LROFFSET, OFFSET, SEG, THIS, TYPE
* 6 HIGH, HIGHWORD, LOW, LOWWORD
* 7 +, - (unary)
* 8 *, /, MOD, SHL, SHR
* 9 +, - (binary)
* 10 EQ, NE, LT, LE, GT, GE
* 11 NOT
* 12 AND
* 13 OR, XOR
* 14 OPATTR, SHORT, .TYPE
* The following table appears in QuickHelp online documentation for
* both MASM 6.0 and 6.1. It's slightly different!
* 1 LENGTH, SIZE, WIDTH, MASK
* 2 (), []
* 3 . (structure-field-name operator)
* 4 : (segment override operator), PTR
* 5 THIS, OFFSET, SEG, TYPE
* 6 HIGH, LOW
* 7 +, - (unary)
* 8 *, /, MOD, SHL, SHR
* 9 +, - (binary)
* 10 EQ, NE, LT, LE, GT, GE
* 11 NOT
* 12 AND
* 13 OR, XOR
* 14 SHORT, OPATTR, .TYPE, ADDR
* japheth: the first table is the prefered one. Reasons:
* - () and [] must be first.
* - it contains operators SIZEOF, LENGTHOF, HIGHWORD, LOWWORD, LROFFSET
* - ADDR is no operator for expressions. It's exclusively used inside
* INVOKE directive.
* However, what's wrong in both tables is the precedence of
* the dot operator: Actually for both Uasm and Wasm the dot precedence
* is 2 and LENGTH, SIZE, ... have precedence 3 instead.
* Precedence of operator TYPE was 5 in original Wasm source. It has
* been changed to 4, as described in the Masm docs. This allows syntax
* "TYPE DWORD ptr xxx"
* v2.02: another case which is problematic:
* mov al,BYTE PTR CS:[]
* Since PTR and ':' have the very same priority, the evaluator will
* first calculate 'BYTE PTR CS'. This is invalid, but didn't matter
* prior to v2.02 because register coercion was never checked for
* plausibility. Solution: priority of ':' is changed from 4 to 3.
*/
switch( item->token ) {
case T_UNARY_OPERATOR:
case T_BINARY_OPERATOR:
return( item->precedence );
case T_OP_BRACKET:
case T_OP_SQ_BRACKET:
/* v2.08: with -Zm, the priority of [] and (), if
* used as binary operator, is 9 (like binary +/-).
* test cases: mov ax,+5[bx]
* mov ax,-5[bx]
*/
//return( 1 );
return( ModuleInfo.m510 ? 9 : 1 );
case T_DOT:
return( 2 );
case T_COLON:
//return( 4 );
return( 3 ); /* changed for v2.02 */
case '*':
case '/':
return( 8 );
case '+':
case '-':
return( item->specval ? 9 : 7 );
}
/* shouldn't happen! */
DebugMsg(("get_precedence: unexpected operator=%s\n", item->string_ptr));
fnEmitErr( SYNTAX_ERROR_EX, item->string_ptr );
return( ERROR );
}
#if 0
static bool is_operator( enum tok_type tt )
/*****************************************/
/* determine if token is an operator */
{
/* T_OP_BRACKET and above: "(,[,],},:,.,+,-,*,/" */
/* rest: T_REG, T_STYPE, T_RES_ID, T_ID, T_STRING,
* T_NUM, T_FLOAT, T_BAD_NUM, T_DBL_COLON, T_PERCENT
*/
return( tt >= T_OP_BRACKET || tt == T_UNARY_OPERATOR || tt == T_BINARY_OPERATOR );
}
static bool is_unary_op( enum tok_type tt )
/*****************************************/
/* determine if token is an unary operator */
{
return( tt == T_OP_BRACKET || tt == T_OP_SQ_BRACKET || tt == '+' || tt == '-' || tt == T_UNARY_OPERATOR );
}
#else
#define is_operator( tt ) ( tt >= T_OP_BRACKET || tt == T_UNARY_OPERATOR || tt == T_BINARY_OPERATOR )
#define is_unary_op( tt ) ( tt == T_OP_BRACKET || tt == T_OP_SQ_BRACKET || tt == '+' || tt == '-' || tt == T_UNARY_OPERATOR )
#endif
/* get value for simple types
* NEAR, FAR and PROC are handled slightly differently:
* the HIBYTE is set to 0xFF, and PROC depends on the memory model
*/
static unsigned int GetTypeSize(enum memtype mem_type, int Ofssize)
/*******************************************************************/
{
if ((mem_type & MT_SPECIAL) == 0) {
#if AVXSUPP
if (mem_type == MT_ZMMWORD)
return (0x40);
else
#endif
return((mem_type & MT_SIZE_MASK) + 1);
}
if (Ofssize == USE_EMPTY)
Ofssize = ModuleInfo.Ofssize;
switch (mem_type) {
case MT_NEAR: return (0xFF00 | (2 << Ofssize));
case MT_FAR: return ((Ofssize == USE16) ? LS_FAR16 : 0xFF00 | ((2 << Ofssize) + 2));
}
/* shouldn't happen */
return(0);
}
#if AMD64_SUPPORT
static uint_64 GetRecordMask( struct dsym *record )
#else
static uint_32 GetRecordMask( struct dsym *record )
#endif
/*************************************************/
{
#if AMD64_SUPPORT
uint_64 mask = 0;
#else
uint_32 mask = 0;
#endif
int i;
struct sfield *fl;
for ( fl = record->e.structinfo->head; fl; fl = fl->next ) {
struct asym *sym = &fl->sym;
for ( i = sym->offset ;i < sym->offset + sym->total_size; i++ )
#if AMD64_SUPPORT
mask |= (1LL << (uint_64)i);
#else
mask |= (1 << i);
#endif
}
return( mask );
}
/* v2.06: the value of number strings is now evaluated here.
* Prior to v2.06, it was evaluated in the tokenizer and the
* value was stored in the token string buffer. Since the content
* of the token buffer is no longer destroyed when macros or
* generated code is run, the old strategy needed too much space.
*/
void myatoi128( const char *src, uint_64 dst[], int base, int size )
/******************************************************************/
{
uint_32 val;
unsigned len;
const char *end = src + size;
uint_16 *px;
dst[0] = 0;
dst[1] = 0;
#if CHEXPREFIX
if (((src[1] | 0x20) == 'x') && (*src == '0')){
src += 2;
end += 2;
}
#endif
do {
val = ( *src <= '9' ? *src - '0' : ( *src | 0x20 ) - 'a' + 10 );
px = (uint_16 *)dst;
for ( len = ( 2 * sizeof( uint_64 ) ) >> 1; len; len-- ) {
val += (uint_32)*px * base;
*(px++) = val;
val >>= 16;
};
//myassert( val == 0 ); /* if number doesn't fit in 128 bits */
src++;
} while( src < end );
return;
}
/* get an operand. operands are:
* - integer constant : EXPR_CONST
* - quoted string : EXPR_CONST
* - register : EXPR_REG (indirect = 1/0)
* - user identifier (T_ID): EXPR_ADDR | EXPR_CONST
* - reserved ID (T_RES_ID): EXPR_CONST ( EXPR_ADDR if id=FLAT )
* - float constant : EXPR_FLOAT
*
* valid user identifiers are
* - TYPE ( struct/union, typedef, record )
* - STRUCT FIELD (also bitfield)
* - variable (internal, external, stack ) or constant (EQU, '=')
* valid reserved IDs are types (BYTE, WORD, ... ) and FLAT
*/
static ret_code get_operand( struct expr *opnd, int *idx, struct asm_tok tokenarray[], const uint_8 flags )
/*********************************************************************************************************/
{
char *tmp;
struct asym *sym;
int i = *idx;
int j;
char labelbuff[16];/* for anonymous labels */
int cnt;
char *p;
char clabel[100];
struct asym *labelsym;
struct asym *labelsym2;
struct asm_tok tok;
DebugMsg1(("%u get_operand(idx=%u >%s<) enter [memtype=%Xh]\n", evallvl, i, tokenarray[i].tokpos, opnd->mem_type ));
switch( tokenarray[i].token ) {
case T_DOT:
/* Allow .labelname to be used as an operand */
if ((tokenarray[*idx].token == T_DOT && tokenarray[(*idx) + 1].token == T_ID))
{
// check that T_ID is a label
sprintf(clabel, "%s%s", ".", tokenarray[(*idx) + 1].string_ptr);
labelsym = SymFind(clabel);
labelsym2 = SymFind(tokenarray[(*idx) + 1].string_ptr);
if ((*idx) > 0)
{
tok = tokenarray[(*idx) - 1];
}
if (labelsym != NULL ||
(labelsym == NULL && tok.token != T_ID && tok.token != T_CL_SQ_BRACKET && tok.token != T_CL_BRACKET) ||
(labelsym != NULL && labelsym->label))
{
(*idx)++;
strcpy(clabel, tokenarray[(*idx)].string_ptr);
sprintf(tokenarray[(*idx)].string_ptr, "%s%s", ".", &clabel);
}
else if (labelsym == NULL && labelsym2 == NULL)
{
}
i++;
goto isNowID;
}
case T_NUM:
DebugMsg1(("%u get_operand: T_NUM, %s, base=%u, len=%u\n", evallvl, tokenarray[i].string_ptr, tokenarray[i].numbase, tokenarray[i].itemlen ));
opnd->kind = EXPR_CONST;
myatoi128( tokenarray[i].string_ptr, &opnd->llvalue, tokenarray[i].numbase, tokenarray[i].itemlen );
//opnd->llvalue = tokenarray[i].value64;
//opnd->hlvalue = ( tokenarray[i].numflg == NF_NULL ? 0 : *(uint_64 *)( tokenarray[i].string_ptr - sizeof(uint_64) ) );
break;
case T_STRING:
DebugMsg1(("%u get_operand: T_STRING, %s, size=%u\n", evallvl, tokenarray[i].string_ptr, tokenarray[i].stringlen ));
/* string enclosed in <> or {} are rejected since v1.94! */
if (tokenarray[i].string_delim != '"' && tokenarray[i].string_delim != '\'') {
/* here is handled EVEX Static Rounding Mode
* {sae}, {rn-sae},{rd-sae},{ru-sae} {rz-sae}
* ZLLBVAAA ZLLBVAAA ZLLBVAAA ZLLBVAAA ZLLBVAAA
* 00010000 00010000 00110000 01010000 01110000
* to destinguish between SAE and RN I added 0x10
* to all 4 other decorators
* which will be subtracted in codegen.c
*/
/* optimized and alowed white space after '{' and before '}', v2.38 */
if (tokenarray[i].string_delim == '{' && evex) {
p = tokenarray[i].string_ptr;
while (isspace(*p)) p++; /* skip white spaces*/
if (memcmp(p, "rn-sae", 6) == 0) {
opnd->kind = EXPR_DECORATOR;
opnd->saeflags = 0x20;
break;
}
else if (memcmp(p, "rd-sae", 6) == 0) {
opnd->kind = EXPR_DECORATOR;
opnd->saeflags = 0x40;
break;
}
else if (memcmp(p, "ru-sae", 6) == 0) {
opnd->kind = EXPR_DECORATOR;
opnd->saeflags = 0x60;
break;
}
else if (memcmp(p, "rz-sae", 6) == 0) {
opnd->kind = EXPR_DECORATOR;
opnd->saeflags = 0x80;
break;
}
else if (memcmp(p, "sae", 3) == 0) {
opnd->kind = EXPR_DECORATOR;
opnd->saeflags = 0x10;
break;
}
//EmitError(UNAUTHORISED_USE_OF_EVEX_ENCODING);
}
else if (opnd->is_opattr) /* OPATTR operator accepts anything! */
break;
/* v2.0: display a comprehensible error msg if a quote is missing */
if (tokenarray[i].string_delim == NULLC &&
(*tokenarray[i].string_ptr == '"' || *tokenarray[i].string_ptr == '\''))
fnEmitErr(MISSING_QUOTATION_MARK_IN_STRING);
else
fnEmitErr(MISSING_QUOTATION_MARK_IN_STRING, tokenarray[i].tokpos);
return(ERROR);
}
opnd->kind = EXPR_CONST;
opnd->quoted_string = &tokenarray[i];
//opnd->value = 0;
tmp = tokenarray[i].string_ptr + 1; /* skip the quote */
/* v2.06: use max. 16 bytes to create the "value".
* Prior to 2.06, max 8 bytes were used for 64-bit and
* max 4 bytes were used for 16-/32-bit.
*/
j = ( tokenarray[i].stringlen > sizeof( opnd->chararray ) ? sizeof( opnd->chararray ) : tokenarray[i].stringlen );
for( ; j; j-- )
opnd->chararray[j-1] = *tmp++;
break;
case T_REG:
DebugMsg1(( "%u get_operand: T_REG, string=%s, tokval=%u, regno=%u\n", evallvl, tokenarray[i].string_ptr, tokenarray[i].tokval, tokenarray[i].bytval ));
opnd->kind = EXPR_REG;
opnd->base_reg = &tokenarray[i];
j = tokenarray[i].tokval;
/* check if cpu is sufficient for register */
if( ( ( GetCpuSp( j ) & P_EXT_MASK ) &&
(( GetCpuSp( j ) & ModuleInfo.curr_cpu & P_EXT_MASK) == 0) ||
( ModuleInfo.curr_cpu & P_CPU_MASK ) < ( GetCpuSp( j ) & P_CPU_MASK ) ) ) {
/* v2.11: do not exit in indirect mode; avoids additional syntax error caused by ']' */
if ( flags & EXPF_IN_SQBR ) {
opnd->kind = EXPR_ERROR;
fnEmitErr( INSTRUCTION_OR_REGISTER_NOT_ACCEPTED_IN_CURRENT_CPU_MODE );
} else
return( fnEmitErr( INSTRUCTION_OR_REGISTER_NOT_ACCEPTED_IN_CURRENT_CPU_MODE ) );
}
if ((i > 0 && tokenarray[i - 1].tokval == T_TYPE) ||
(i > 1 && tokenarray[i - 1].token == T_OP_BRACKET
&& tokenarray[i - 2].tokval == T_TYPE))
; /* v2.26 [reg + type reg] | [reg + type(reg)] */
else if (flags & EXPF_IN_SQBR) {
//if( flags & EXPF_IN_SQBR && (i == 0 || tokenarray[i - 1].tokval != T_TYPE) )
//{
/* a valid index register? */
if ( GetSflagsSp( j ) & SFR_IREG ) {
opnd->indirect = TRUE;
opnd->assumecheck = TRUE;
} else if ( GetValueSp( j ) & OP_SR ) {
/* a segment register inside square brackets is only