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libobj.cpp
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libobj.cpp
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#include "coff.h"
#include "tok.h"
char *meserr = "Plese, send this obj and sources files to me ([email protected])";
struct LISTINCLFILE {
char *name;
int typefind;
int type;
};
enum { s_extern, s_code, s_data, s_bss };
struct LISTNAMESYMBOL {
int idx; //¨¤¥ªá ¨¬¥¨
int seg;
int adr;
idrec *rec;
int dbg;
char name[IDLENGTH];
} * listnamesymbol;
char *curobjname;
int numobj = 0, numname;
LISTINCLFILE *listobj;
unsigned int adr_end;
void LoadObj();
void AddPost(unsigned long loc, int type, unsigned int num);
int searchtree2(idrec *fptr, ITOK *itok4, int *tok4, unsigned char *string4);
int GetSegm(int seg) {
OBJECT_ENTRY *obj;
if (seg) {
seg--;
obj = (OBJECT_ENTRY *)(input +
(sizeof(COFF_HEADER) + sizeof(OBJECT_ENTRY) * seg));
seg = obj->vsize;
}
return seg;
}
int GetOffSec(int seg) {
OBJECT_ENTRY *obj;
if (seg) {
seg--;
obj = (OBJECT_ENTRY *)(input +
(sizeof(COFF_HEADER) + sizeof(OBJECT_ENTRY) * seg));
seg = obj->sectionRVA;
}
return seg;
}
void AddNameObj(char *name, int typefind, int type) {
if (!numobj)
listobj = (LISTINCLFILE *)MALLOC(sizeof(LISTINCLFILE));
else
listobj =
(LISTINCLFILE *)REALLOC(listobj, sizeof(LISTINCLFILE) * (numobj + 1));
(listobj + numobj)->name = BackString(name);
(listobj + numobj)->typefind = typefind;
(listobj + numobj)->type = type;
numobj++;
}
void AddObj() {
int hold;
for (int i = 0; i < numobj; i++) {
curobjname = (listobj + i)->name;
// puts(curobjname);
hold = loadfile(curobjname, (listobj + i)->typefind);
if (hold == 1 || hold == -1) {
unableopenfile(curobjname);
continue;
}
if ((listobj + i)->type == 0)
LoadObj();
free(input);
}
}
int GetAlighSize(long flag) {
int align = 0;
int i = (flag & IMAGE_SCN_ALIGN_MASK) >> 20;
if (i)
align = 1 << (i - 1);
if (align == 1)
align = 0;
return align;
}
void ConvertName(char *name) {
int i1, i2;
char c;
tok = tk_ID;
i1 = i2 = 0;
c = name[i1];
if (c == '?') {
i1++;
c = name[i1];
if (c == '?') {
i1 = 2;
c = name[i1];
}
} else if (c == '_') {
if (strncmp(name, "__imp__", 7) == 0) {
i1 = 7;
c = name[i1];
} else if (name[1] == '$') {
i1 = 2;
c = name[i1];
}
}
while (c != 0) {
if (c >= 'a' && c <= 'z')
tok = tk_id;
name[i2] = c;
i1++;
i2++;
c = name[i1];
if (c == '@' || c == '$')
break;
}
name[i2] = 0;
}
void AddPost(unsigned long loc, int type, unsigned int num) {
CheckPosts();
(postbuf + posts)->num = num;
(postbuf + posts)->type = type;
(postbuf + posts)->loc = loc;
posts++;
}
void ScanSection(int numobj) {
int poutptr, poutptrdata, ppostsize, align;
OBJECT_ENTRY *obj;
long flag;
poutptr = outptr;
poutptrdata = outptrdata;
ppostsize = postsize;
for (int i = 0; i < numobj; i++) {
obj = (OBJECT_ENTRY *)(input +
(sizeof(COFF_HEADER) + sizeof(OBJECT_ENTRY) * i));
flag = obj->flags;
align = GetAlighSize(flag);
obj->vsize = -1;
if ((flag & IMAGE_SCN_CNT_CODE) &&
(flag & IMAGE_SCN_MEM_EXECUTE)) { //ᥪæ¨ï ª®¤
obj->vsize = s_code;
obj->sectionRVA = poutptr = Align(poutptr, align);
poutptr += obj->psize;
if (splitdata == FALSE)
poutptrdata = poutptr;
} else {
if ((flag & IMAGE_SCN_MEM_READ) && (flag & IMAGE_SCN_MEM_WRITE)) {
if (flag &
IMAGE_SCN_CNT_INITIALIZED_DATA) { //ᥪæ¨ï ¨¨æ¨ «¨§¨à®¢ ëå ¤ ëå
obj->vsize = s_data;
obj->sectionRVA = poutptrdata = Align(poutptrdata, align);
poutptrdata += obj->psize;
if (splitdata == FALSE)
poutptr = poutptrdata;
} else if (flag & IMAGE_SCN_CNT_UNINITIALIZED_DATA) { //ᥪæ¨ï bss
obj->vsize = s_bss;
obj->sectionRVA = ppostsize = Align(postsize, align);
postsize += obj->psize;
}
}
}
}
}
void AddLstName(int numname) {
unsigned int minofs;
int i, j, minname;
int oseg;
unsigned int ooutptr, ooutptrdata;
ooutptr = outptr;
ooutptrdata = outptrdata;
for (i = 0; i < numname; i++) {
if ((listnamesymbol + i)->dbg == 0) {
oseg = (listnamesymbol + i)->seg;
minofs = (listnamesymbol + i)->adr;
minname = i;
for (j = i + 1; j < numname; j++) {
if (splitdata == FALSE)
goto checkadr;
else if ((listnamesymbol + j)->seg == oseg) {
checkadr:
if (minofs >= (listnamesymbol + j)->adr &&
(listnamesymbol + j)->dbg == 0) {
if (minofs == (listnamesymbol + j)->adr) {
(listnamesymbol + minname)->dbg = 1;
}
minofs = (listnamesymbol + j)->adr;
minname = j;
oseg = (listnamesymbol + j)->seg;
}
}
}
if (minname != i)
i--;
// printf("seg=%d adr=%d
//%s\n",oseg,(listnamesymbol+minname)->adr,(listnamesymbol+minname)->name);
if (oseg == s_code) {
if ((listnamesymbol + minname)->rec) {
idrec *ptr;
ptr = (listnamesymbol + minname)->rec;
if (ptr->rectok == tk_undefproc || ptr->rectok == tk_proc ||
ptr->rectok == tk_interruptproc)
goto dproc;
outptrdata = (listnamesymbol + minname)->adr;
if (splitdata == FALSE)
outptr = outptrdata;
AddDataNullLine(3, (listnamesymbol + minname)->name);
} else {
dproc:
outptr = (listnamesymbol + minname)->adr; // 12.08.04 00:05 +ooutptr;
AddCodeNullLine((listnamesymbol + minname)->name);
}
} else if (oseg == s_data) {
outptrdata =
(listnamesymbol + minname)->adr; // 12.08.04 01:19 +ooutptrdata;
if (splitdata == FALSE)
outptr = outptrdata;
AddDataNullLine(3, (listnamesymbol + minname)->name);
}
(listnamesymbol + minname)->dbg = 1;
}
}
outptr = ooutptr;
outptrdata = ooutptrdata;
}
int ScanName(COFF_HEADER *head) {
int size, i, j, numname, seg, count;
IMAGE_SYMBOL *tsym;
unsigned int ooutptr, ooutptrdata, opostsize;
idrec *rec;
ooutptr = outptr;
ooutptrdata = outptrdata;
opostsize = postsize;
numname = head->COFFsize;
size = numname * sizeof(IMAGE_SYMBOL) + head->pCOFF;
listnamesymbol = (LISTNAMESYMBOL *)MALLOC(sizeof(LISTNAMESYMBOL) * numname);
for (i = 0, j = 0; i < numname; i++) {
tsym = (IMAGE_SYMBOL *)(input + head->pCOFF + i * sizeof(IMAGE_SYMBOL));
(listnamesymbol + j)->rec = 0;
if (tsym->SectionNumber >= 0) {
(listnamesymbol + j)->idx = i;
if (tsym->N.Name.Short == 0) {
strcpy((char *)string, (char *)(input + size + tsym->N.Name.Long));
} else {
strncpy((char *)string, (char *)tsym->N.sname, 8);
string[8] = 0;
}
//¯à¥®¡à §®¢ âì ¨¬ï
ConvertName((char *)string);
seg = (listnamesymbol + j)->seg = GetSegm(tsym->SectionNumber);
// printf("find name \"%s\" seg=%d type=%d
// class=%d\n",(char *)string,seg,tsym->Type,tsym->StorageClass);
(listnamesymbol + j)->adr = tsym->Value + GetOffSec(tsym->SectionNumber);
(listnamesymbol + j)->dbg = 0;
strcpy((listnamesymbol + j)->name, (char *)string);
if (seg == s_data) {
outptrdata = (listnamesymbol + j)->adr; // 12.08.04 01:20 +ooutptrdata;
count = FindOff(string, DS);
} else if (seg == s_bss) {
postsize = (listnamesymbol + j)->adr; // 12.08.04 01:20 +opostsize;
count = FindOff(string, VARPOST);
} else if (seg == s_code) {
outptr = (listnamesymbol + j)->adr; // 11.08.04 23:59 +ooutptr;
count = FindOff(string, CS);
// printf("adr=%08X
// count=%d\n",outptr,count);
}
displaytokerrors = FALSE;
if (searchtree2(treestart, &itok, &tok, string)) {
rec = (listnamesymbol + j)->rec = itok.rec;
rec->count += count;
if (tok == tk_undefproc || tok == tk_declare) {
tok = tk_proc;
itok.number = outptr;
// printf("%08X %08X
//%s\n",(listnamesymbol+j)->adr,ooutptr,itok.name);
updatecall(updatetree(), (unsigned int)itok.number, 0);
} else if (tok != tk_apiproc && tsym->SectionNumber != 0)
idalreadydefined();
// if(tok==tk_proc||(tok>=tk_charvar&&tok<=tk_floatvar))
// printf("tok=%d %s\n",tok,itok.name);
} else {
if (seg == s_extern /*&&tsym->Type==32*/) { //¢¥è¨© ®¡ê¥ªâ «î¡®£® ⨯
strcpy(itok.name, (char *)string);
// printf("undef proc
//\"%s\"\n",itok.name);
string[0] = 0;
itok.flag =
(unsigned char)(tok == tk_ID ? tp_fastcall
: (comfile == file_w32 ? tp_stdcall
: tp_pascal));
tok = tk_undefproc;
itok.number = secondcallnum;
itok.segm = NOT_DYNAMIC;
itok.rm = tk_void;
itok.post = 0;
rec = (listnamesymbol + j)->rec = addtotree(itok.name);
rec->count = count;
secondcallnum++;
} else {
// printf("type=%d
// seg=%d\n",tsym->Type,seg);
if (/*tsym->Type==32*/ tsym->StorageClass != 3 && seg == s_code) {
tok = tk_proc;
itok.number = outptr;
itok.segm = NOT_DYNAMIC;
itok.rm = tk_void;
itok.post = 0;
strcpy(itok.name, (char *)string);
string[0] = 0;
itok.flag = (unsigned char)(tok == tk_ID ? tp_fastcall
: (comfile == file_w32
? tp_stdcall
: tp_pascal));
rec = (listnamesymbol + j)->rec = addtotree(itok.name);
rec->count = count;
} else {
(listnamesymbol + j)->rec = NULL;
// printf("undef
//\"%s\"\n",string);
if (seg == s_extern) {
// puts("323");
preerror(meserr);
// printf("Type=%d Class=%d seg=%d
//%s\n",tsym->Type,tsym->StorageClass,seg,string);
//printf("??? %s\n",string);
}
}
}
}
// printf("Type=%d Class=%d
//%s\n",tsym->Type,tsym->StorageClass,string);
j++;
}
i += tsym->NumberOfAuxSymbols;
}
if (j != numname) {
listnamesymbol =
(LISTNAMESYMBOL *)REALLOC(listnamesymbol, sizeof(LISTNAMESYMBOL) * j);
}
outptr = ooutptr;
outptrdata = ooutptrdata;
postsize = opostsize;
if (dbg & 2)
AddLstName(j);
return j;
}
void LoadObj() {
COFF_HEADER *head;
int numobj, align, size, i, j, numrel;
OBJECT_ENTRY *obj;
unsigned char *buf;
IMAGE_RELOCATION *trel;
head = (COFF_HEADER *)input;
if (head->cpu != 0x14C) {
sprintf((char *)string, "file %s is not supported format", curobjname);
preerror((char *)string);
return;
}
if (comfile != file_w32) {
preerror("include obj file posible only for windows programs");
return;
}
linenumber = 0;
numobj = head->numobj;
ScanSection(numobj);
numname = ScanName(head);
for (i = 0; i < numobj; i++) {
obj = (OBJECT_ENTRY *)(input +
(sizeof(COFF_HEADER) + sizeof(OBJECT_ENTRY) * i));
align = GetAlighSize(obj->flags);
size = obj->psize;
adr_end = outptr + size;
numrel = obj->NumberOfRelocations;
trel = (IMAGE_RELOCATION *)(input + obj->PointerToRelocations);
buf = (unsigned char *)(input + obj->pOffset);
// printf("type=%d section=%d\n",(trel+j)->Type,obj->vsize);
switch (obj->vsize) {
case s_code:
if (align)
AlignCD(CS, align);
adr_end = Align(outptr + size, 4);
for (j = 0; j < numrel; j++) {
int adr;
LISTNAMESYMBOL *lns;
int ii;
for (ii = 0; ii < numname; ii++) {
if ((listnamesymbol + ii)->idx == (trel + j)->SymbolTableIndex)
break;
}
lns = (LISTNAMESYMBOL *)(listnamesymbol + ii);
idrec *rec = lns->rec;
// printf("type=%d seg=%d tok=%d
//num=%d
//%s\n",(trel+j)->Type,lns->seg,rec->rectok,rec->recnumber,lns->name);
switch ((trel + j)->Type) {
case IMAGE_REL_I386_DIR32:
*(long *)&buf[(trel + j)->VirtualAddress] += lns->adr;
switch (lns->seg) {
case s_code:
adr = (trel + j)->VirtualAddress + outptr;
AddPost(adr, FIX_CODE32, 0);
break;
case s_data:
adr = (trel + j)->VirtualAddress + outptrdata;
AddPost(adr, FIX_VAR32, 0);
break;
case s_bss:
adr = (trel + j)->VirtualAddress + outptr;
AddPost(adr, POST_VAR32, 0);
*(long *)&buf[(trel + j)->VirtualAddress] += postsize;
break;
default:
if (rec != NULL) {
adr = (trel + j)->VirtualAddress + outptr;
if (rec->rectok == tk_apiproc) {
AddPost(adr, CALL_32I, rec->recnumber);
} else if (rec->rectok == tk_undefproc) {
AddPost(adr, CALL_32, rec->recnumber);
} else if (rec->rectok == tk_proc) {
AddPost(adr, FIX_CODE_ADD, adr_end);
AddPost(adr_end, FIX_CODE32, 0);
if (dbg & 2) {
int ooutptr = outptr;
outptr = adr_end;
AddDataNullLine(4, lns->name);
outptr = ooutptr;
}
*(long *)&output[adr_end] = rec->recnumber;
adr_end += 4;
}
rec->count++;
}
break;
}
break;
case IMAGE_REL_I386_REL32:
adr = (trel + j)->VirtualAddress + outptr;
if (rec != NULL) {
if (rec->rectok != tk_proc) {
AddPost(adr, CALL_32, rec->recnumber);
} else {
*(long *)&buf[(trel + j)->VirtualAddress] =
rec->recnumber - adr - 4;
}
} else {
*(long *)&buf[(trel + j)->VirtualAddress] = lns->adr - adr - 4;
}
if (rec)
rec->count++;
break;
default:
// puts("432");
preerror(meserr);
break;
}
}
/* if(dbg&2){
sprintf((char *)string,"code from
%s",curobjname); AddCodeNullLine((char *)string);
}*/
for (j = 0; j < size; j++)
op(buf[j]);
outptr = adr_end;
break;
case s_data:
if (align)
AlignCD(DS, align);
for (j = 0; j < numrel; j++) {
int adr;
LISTNAMESYMBOL *lns;
int ii;
for (ii = 0; ii < numname; ii++) {
if ((listnamesymbol + ii)->idx == (trel + j)->SymbolTableIndex)
break;
}
lns = (LISTNAMESYMBOL *)(listnamesymbol + ii);
// idrec *rec = lns->rec;
switch ((trel + j)->Type) {
case IMAGE_REL_I386_DIR32:
*(long *)&buf[(trel + j)->VirtualAddress] += lns->adr;
switch (lns->seg) {
case s_code:
adr = (trel + j)->VirtualAddress + outptr;
AddPost(adr, FIX_CODE32, 0);
break;
case s_data:
adr = (trel + j)->VirtualAddress + outptrdata;
AddPost(adr, FIX_VAR32, 0);
break;
case s_bss:
adr = (trel + j)->VirtualAddress + outptr;
AddPost(adr, POST_VAR32, 0);
*(long *)&buf[(trel + j)->VirtualAddress] += postsize;
break;
default:
// puts("472");
preerror(meserr);
/* if(rec!=NULL){
adr=(trel+j)->VirtualAddress+outptr;
if(rec->rectok==tk_apiproc){
AddPost(adr,CALL_32I,rec->recnumber);
}
else if(rec->rectok==tk_undefproc){
AddPost(adr,CALL_32,rec->recnumber);
}
rec->count++;
}*/
break;
}
break;
case IMAGE_REL_I386_REL32:
// puts("488");
preerror(meserr);
/* adr=(trel+j)->VirtualAddress+outptr;
if(rec!=NULL){
if(rec->rectok!=tk_proc){
AddPost(adr,CALL_32,rec->recnumber);
}
else{
*(long *)&buf[(trel+j)->VirtualAddress]=rec->recnumber-adr-4;
}
}
else{
*(long
*)&buf[(trel+j)->VirtualAddress]=lns->adr-adr-4;
}
if(rec)rec->count++;*/
break;
}
}
for (j = 0; j < size; j++)
opd(buf[j]);
break;
case s_bss:
if (align)
postsize = Align(postsize, align);
postsize += size;
break;
}
}
}