mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-17 20:32:35 +03:00
69 lines
1.7 KiB
NASM
69 lines
1.7 KiB
NASM
|
filename equ '%EXENAME%'
|
||
|
|
|
||
|
|
virtual at 0
|
||
|
|
file filename:3Ch,4
|
||
|
|
load pehea dword from 0
|
||
|
|
file filename:pehea,0F8h+28h*3
|
||
|
|
load NumberOfSections word from 4+6
|
||
|
|
load SizeOfOptionalHeader word from 4+14h
|
||
|
|
if NumberOfSections<>3
|
||
|
|
error Expected three sections, .text, .bss and .reloc
|
||
|
|
end if
|
||
|
|
if SizeOfOptionalHeader<>0E0h
|
||
|
|
error Nonstandard PE header
|
||
|
|
end if
|
||
|
|
load RelocsRVA dword from 4+0A0h
|
||
|
|
load RelocsSize dword from 4+0A4h
|
||
|
|
load ImageBase dword from 4+34h
|
||
|
|
load TextRVA dword from 4+0F8h+0Ch
|
||
|
|
load TextSize dword from 4+0F8h+8
|
||
|
|
load TextOffs dword from 4+0F8h+14h
|
||
|
|
load BSSSize dword from 4+0F8h+28h+10h
|
||
|
|
load RelocRVA dword from 4+0F8h+28h*2+0Ch
|
||
|
|
load RelocOffs dword from 4+0F8h+28h*2+14h
|
||
|
|
if BSSSize
|
||
|
|
error Second section expected to be .bss
|
||
|
|
end if
|
||
|
|
if RelocRVA<>RelocsRVA
|
||
|
|
error Third section expected to be .reloc
|
||
|
|
end if
|
||
|
|
;file 'test.exe':pehea+0F8h,28h
|
||
|
|
;load physofs dword from 4+14h
|
||
|
|
;load mem dword from 4+8
|
||
|
|
;file 'test.exe':physofs+16,4
|
||
|
|
;load sz dword from $-4
|
||
|
|
end virtual
|
||
|
|
|
||
|
|
file filename:TextOffs,TextSize
|
||
|
|
|
||
|
|
while RelocsSize>8
|
||
|
|
virtual at 0
|
||
|
|
file filename:RelocOffs,8
|
||
|
|
load CurRelocPage dword from 0
|
||
|
|
load CurRelocChunkSize dword from 4
|
||
|
|
end virtual
|
||
|
|
RelocsSize=RelocsSize-CurRelocChunkSize
|
||
|
|
CurRelocChunkSize = CurRelocChunkSize-8
|
||
|
|
RelocOffs=RelocOffs+8
|
||
|
|
while CurRelocChunkSize
|
||
|
|
virtual at 0
|
||
|
|
file filename:RelocOffs,2
|
||
|
|
RelocOffs=RelocOffs+2
|
||
|
|
CurRelocChunkSize=CurRelocChunkSize-2
|
||
|
|
load s word from 0
|
||
|
|
end virtual
|
||
|
|
CurRelocType = s shr 12
|
||
|
|
RelocItem = CurRelocPage + (s and 0xFFF)
|
||
|
|
if CurRelocType=0
|
||
|
|
else if CurRelocType=3
|
||
|
|
load z dword from RelocItem-TextRVA
|
||
|
|
store dword z-(TextRVA+ImageBase) at RelocItem-TextRVA
|
||
|
|
else
|
||
|
|
error Unexpected relocation type
|
||
|
|
end if
|
||
|
|
end while
|
||
|
|
end while
|
||
|
|
|
||
|
|
store dword TextSize at 10h
|
||
|
|
store dword RelocRVA-TextRVA at 14h
|