mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-15 19:33:59 +03:00
102 lines
2.5 KiB
NASM
102 lines
2.5 KiB
NASM
;
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; KolibriOS Dll load support
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;
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; (C) 2020-2021 Coldy
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; Thank's you for use this code and software based on it!
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; I will glad if it's will be helpful.
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;
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; Distributed under terms of GPL
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;
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format MS COFF
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public @EXPORT as 'EXPORTS'
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include '../../../proc32.inc'
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include '../../../macros.inc'
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section '.flat' code readable align 16
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app_version equ word[8]
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i_table_min_size = 1
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sizeof.kx_header = 8
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APP_STARTUP_THUNK:
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; First make shure that app
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; have header version 2.0 or more
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cmp app_version,2
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jl .denied ; App with app_version < 2 shouldn't be here
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; Then make shure that we first
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mov eax, @EXPORT
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cmp dword[eax-4],0
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je .denied
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; Don't allow second time
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mov dword[eax-4],0
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; Early app initialization
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;{ Test KX header
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;xor eax, eax
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mov esi,0x24
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lodsw
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cmp ax, 'KX'
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jne @f ; Not KX
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lodsw
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cmp ax, 0
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jne @f ; Bad magic
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lodsw
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bt ax, 6 ; Have import?
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jnc .app_start
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;}
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; Test import table (use legacy style)
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mov eax, [sizeof.kx_header + 0x24] ; i_table_ptr
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test eax, eax
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jz .app_start ; i_table_ptr = 0 ?
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;js .error
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mov esi, [0x10]
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cmp esi, eax
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jbe @f ; i_table_ptr >= img_size ?
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mov ebx, eax
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add ebx, i_table_min_size
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cmp esi, ebx
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jb @f ; i_table_ptr + i_table_min_size > img_size ?
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; Link app/dependent libs import tables with libs export table
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; TODO: need revision of the exists lib format and dll.Load (for libs import binds)
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stdcall dll.Load,eax
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test eax, eax
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jnz .import_error
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.app_start:
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; Start of app code
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mov eax, [0x0C]
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; TODO: test start_ptr + min_code_size < img_size
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call eax
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@@:
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mov eax, -1
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int 0x40
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.import_error:
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; Run @NOTIFY and tell user then error occured
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; BOARD will contaits details
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jmp @b
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.denied:
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; Kolibri has no ability kill app if this enter from no from main thread
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; So just alert and return
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;DEBUGF 1, 'APP_STARTUP_THUNK@dll.obj: App twice/with app_version < 2 has entered!\n'
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ret
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; } APP_STARTUP_THUNK
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; WARNING! This code must be after app initialization thunk!
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include '../../../dll.inc'
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align 4
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;dd 0xdeadbeef
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dd APP_STARTUP_THUNK
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@EXPORT:
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export \
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dll.Load, 'dll_load', \
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dll.Link, 'dll_link', \
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dll.GetProcAddress, 'dll_sym' ; |