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/**
* @namespace biew
* @file refs.c
* @brief This file contains basic level routines for resolving references.
* @version -
* @remark this source file is part of Binary vIEW project (BIEW).
* The Binary vIEW (BIEW) is copyright (C) 1995 Nick Kurshev.
* All rights reserved. This software is redistributable under the
* licence given in the file "Licence.en" ("Licence.ru" in russian
* translation) distributed in the BIEW archive.
* @note Requires POSIX compatible development system
*
* @author Nick Kurshev
* @since 1995
* @note Development, fixes and improvements
**/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "bmfile.h"
#include "reg_form.h"
#include "bconsole.h"
#include "biewutil.h"
#include "codeguid.h"
#include "biewlib/biewlib.h"
#include "biewlib/pmalloc.h"
/***************************************************************************/
/************************ FOR MZ *****************************************/
/***************************************************************************/
long __HUGE__ * CurrMZChain = 0;
static unsigned long CurrMZCount;
static char __codelen;
static tCompare __FASTCALL__ compare_ptr(const void __HUGE__ *e1,const void __HUGE__ *e2)
{
unsigned long v1,v2;
tCompare ret;
v1 = *((const unsigned long __HUGE__ *)e1);
v2 = *((const unsigned long __HUGE__ *)e2);
if(v1 < v2) ret = -1;
else
if(v1 > v2) ret = 1;
else ret = 0;
return ret;
}
static void __NEAR__ __FASTCALL__ BuildMZChain( void )
{
unsigned i;
unsigned long fpos;
TWindow * w,*usd;
usd = twUsedWin();
w = CrtDlgWndnls(" System is busy ",49,1);
twUseWin(w);
twGotoXY(1,1);
twPutS(" Building reference chains for MZ part");
twUseWin(usd);
CurrMZCount = 0;
fpos = bmGetCurrFilePos();
for(i = 0;i < oldh.mz.mzRelocationCount;i++)
{
unsigned off,seg,j;
unsigned long ptr;
void __HUGE__ * tptr;
if(!CurrMZChain) tptr = PHMalloc(sizeof(void *));
else tptr = PHRealloc(CurrMZChain,(CurrMZCount + 1)*sizeof(void *));
if(!tptr) break;
CurrMZChain = tptr;
j = oldh.mz.mzTableOffset + i*4;
bmSeek(j,BM_SEEK_SET);
off = bmReadWord();
seg = bmReadWord();
ptr = (((long)seg) << 4) + off + (((long)oldh.mz.mzHeaderSize) << 4);
CurrMZChain[CurrMZCount++] = ptr;
}
HQSort(CurrMZChain,CurrMZCount,sizeof(void *),compare_ptr);
bmSeek(fpos,BM_SEEK_SET);
CloseWnd(w);
}
static tCompare __FASTCALL__ compare_mz(const void __HUGE__ *e1,const void __HUGE__ *e2)
{
long l1,l2;
tCompare ret;
l1 = *(const long __HUGE__ *)e1;
l2 = *(const long __HUGE__ *)e2;
if(l1 >= l2 && l1 < l2 + __codelen) ret = 0;
else
if(l1 < l2) ret = -1;
else ret = 1;
return ret;
}
static tBool __NEAR__ __FASTCALL__ isMZReferenced(unsigned long shift,char len)
{
if(FType == OLD_EXE && oldh.mz.mzRelocationCount)
{
unsigned long mz_size;
mz_size = (long)(oldh.mz.mzPageCount)*512 + oldh.mz.mzPartLastPage;
if(shift <= mz_size && shift >= ((unsigned long)oldh.mz.mzHeaderSize) << 4)
{
if(!CurrMZChain) BuildMZChain();
__codelen = len;
return HLFind(&shift,CurrMZChain,CurrMZCount,sizeof(long),compare_mz) != 0;
}
}
return False;
}
static tBool __NEAR__ __FASTCALL__ AppendMZRef(char *str,unsigned long ulShift,char codelen)
{
tBool ret = False;
if(isMZReferenced(ulShift,codelen))
{
unsigned wrd;
wrd = bmReadWordEx(ulShift,BM_SEEK_SET);
strcat(str,Get4Digit(wrd));
strcat(str,"+PID");
ret = True;
}
return ret;
}
extern REGISTRY_BIN binTable;
int __FASTCALL__ AppendAsmRef(char *str,unsigned long ulShift,int mode,char codelen,unsigned long r_sh)
{
static tBool warn_displayed = False;
int ret = RAPREF_NONE;
if(detectedFormat->bind) ret = detectedFormat->bind(str,ulShift,mode,codelen,r_sh);
else
{
if(detectedFormat != &binTable && !warn_displayed)
{
WarnMessageBox("Sorry! References resolving for this format still not supported",NULL);
warn_displayed = True;
}
if(FType == OLD_EXE) ret = AppendMZRef(str,ulShift,codelen) ? RAPREF_PROCEEDCMT : RAPREF_NONE;
}
return ret;
}
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