Exemple #1
0
void
asmbpe(void)
{
	IMAGE_SECTION_HEADER *t, *d;

	switch(thechar) {
	default:
		diag("unknown PE architecture");
		errorexit();
	case '6':
		fh.Machine = IMAGE_FILE_MACHINE_AMD64;
		break;
	case '8':
		fh.Machine = IMAGE_FILE_MACHINE_I386;
		break;
	}

	t = addpesection(".text", segtext.len, segtext.len);
	t->Characteristics = IMAGE_SCN_CNT_CODE|
		IMAGE_SCN_CNT_INITIALIZED_DATA|
		IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ;
	chksectseg(t, &segtext);
	textsect = nsect;

	d = addpesection(".data", segdata.len, segdata.filelen);
	d->Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA|
		IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE;
	chksectseg(d, &segdata);

	if(!debug['s'])
		dwarfaddpeheaders();

	cseek(nextfileoff);
	addimports(d);
	addexports();
	addsymtable();
	addpersrc();

	fh.NumberOfSections = nsect;
	fh.TimeDateStamp = time(0);
	fh.Characteristics = IMAGE_FILE_RELOCS_STRIPPED|
		IMAGE_FILE_EXECUTABLE_IMAGE|IMAGE_FILE_DEBUG_STRIPPED;
	if (pe64) {
		fh.SizeOfOptionalHeader = sizeof(oh64);
		fh.Characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
		set(Magic, 0x20b);	// PE32+
	} else {
		fh.SizeOfOptionalHeader = sizeof(oh);
		fh.Characteristics |= IMAGE_FILE_32BIT_MACHINE;
		set(Magic, 0x10b);	// PE32
		oh.BaseOfData = d->VirtualAddress;
	}
	set(MajorLinkerVersion, 3);
	set(MinorLinkerVersion, 0);
	set(SizeOfCode, t->SizeOfRawData);
	set(SizeOfInitializedData, d->SizeOfRawData);
	set(SizeOfUninitializedData, 0);
	set(AddressOfEntryPoint, entryvalue()-PEBASE);
	set(BaseOfCode, t->VirtualAddress);
	set(ImageBase, PEBASE);
	set(SectionAlignment, PESECTALIGN);
	set(FileAlignment, PEFILEALIGN);
	set(MajorOperatingSystemVersion, 4);
	set(MinorOperatingSystemVersion, 0);
	set(MajorImageVersion, 1);
	set(MinorImageVersion, 0);
	set(MajorSubsystemVersion, 4);
	set(MinorSubsystemVersion, 0);
	set(SizeOfImage, nextsectoff);
	set(SizeOfHeaders, PEFILEHEADR);
	if(strcmp(headstring, "windowsgui") == 0)
		set(Subsystem, IMAGE_SUBSYSTEM_WINDOWS_GUI);
	else
		set(Subsystem, IMAGE_SUBSYSTEM_WINDOWS_CUI);

	// Disable stack growth as we don't want Windows to
	// fiddle with the thread stack limits, which we set
	// ourselves to circumvent the stack checks in the
	// Windows exception dispatcher.
	// Commit size must be strictly less than reserve
	// size otherwise reserve will be rounded up to a
	// larger size, as verified with VMMap.

	// Go code would be OK with 64k stacks, but we need larger stacks for cgo.
	// That default stack reserve size affects only the main thread,
	// for other threads we specify stack size in runtime explicitly
	// (runtime knows whether cgo is enabled or not).
	// If you change stack reserve sizes here,
	// change STACKSIZE in runtime/cgo/gcc_windows_{386,amd64}.c as well.
	if(!iscgo) {
		set(SizeOfStackReserve, 0x00010000);
		set(SizeOfStackCommit, 0x0000ffff);
	} else {
		set(SizeOfStackReserve, pe64 ? 0x00200000 : 0x00100000);
		// account for 2 guard pages
		set(SizeOfStackCommit, (pe64 ? 0x00200000 : 0x00100000) - 0x2000);
	}
	set(SizeOfHeapReserve, 0x00100000);
	set(SizeOfHeapCommit, 0x00001000);
	set(NumberOfRvaAndSizes, 16);

	pewrite();
}
Exemple #2
0
void
asmbpe(void)
{
	IMAGE_SECTION_HEADER *t, *d;

	switch(thechar) {
	default:
		diag("unknown PE architecture");
		errorexit();
	case '6':
		fh.Machine = IMAGE_FILE_MACHINE_AMD64;
		break;
	case '8':
		fh.Machine = IMAGE_FILE_MACHINE_I386;
		break;
	}

	t = addpesection(".text", segtext.len, segtext.len, &segtext);
	t->Characteristics = IMAGE_SCN_CNT_CODE|
		IMAGE_SCN_CNT_INITIALIZED_DATA|
		IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ;

	d = addpesection(".data", segdata.len, segdata.filelen, &segdata);
	d->Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA|
		IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE;

	if(!debug['s'])
		dwarfaddpeheaders();

	addimports(nextfileoff, d);
	
	addexports(nextfileoff);
	
	addsymtable();
	
	addpersrc();
	
	fh.NumberOfSections = nsect;
	fh.TimeDateStamp = time(0);
	fh.Characteristics = IMAGE_FILE_RELOCS_STRIPPED|
		IMAGE_FILE_EXECUTABLE_IMAGE|IMAGE_FILE_DEBUG_STRIPPED;
	if (pe64) {
		fh.SizeOfOptionalHeader = sizeof(oh64);
		fh.Characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
		set(Magic, 0x20b);	// PE32+
	} else {
		fh.SizeOfOptionalHeader = sizeof(oh);
		fh.Characteristics |= IMAGE_FILE_32BIT_MACHINE;
		set(Magic, 0x10b);	// PE32
		oh.BaseOfData = d->VirtualAddress;
	}
	set(MajorLinkerVersion, 1);
	set(MinorLinkerVersion, 0);
	set(SizeOfCode, t->SizeOfRawData);
	set(SizeOfInitializedData, d->SizeOfRawData);
	set(SizeOfUninitializedData, 0);
	set(AddressOfEntryPoint, entryvalue()-PEBASE);
	set(BaseOfCode, t->VirtualAddress);
	set(ImageBase, PEBASE);
	set(SectionAlignment, PESECTALIGN);
	set(FileAlignment, PEFILEALIGN);
	set(MajorOperatingSystemVersion, 4);
	set(MinorOperatingSystemVersion, 0);
	set(MajorImageVersion, 1);
	set(MinorImageVersion, 0);
	set(MajorSubsystemVersion, 4);
	set(MinorSubsystemVersion, 0);
	set(SizeOfImage, nextsectoff);
	set(SizeOfHeaders, PEFILEHEADR);
	if(strcmp(headstring, "windowsgui") == 0)
		set(Subsystem, IMAGE_SUBSYSTEM_WINDOWS_GUI);
	else
		set(Subsystem, IMAGE_SUBSYSTEM_WINDOWS_CUI);
	set(SizeOfStackReserve, 0x0040000);
	set(SizeOfStackCommit, 0x00001000);
	set(SizeOfHeapReserve, 0x00100000);
	set(SizeOfHeapCommit, 0x00001000);
	set(NumberOfRvaAndSizes, 16);

	pewrite();
}