vmlinuz/i386 support.

committer: ml1050 <ml1050> 976714560 +0000
2000-12-13 13:36:00 +00:00
parent c9430123d1
commit de30026bbe
7 changed files with 416 additions and 5 deletions
@@ -0,0 +1,111 @@
+;  l_vmlinz.asm -- loader & decompressor for the vmlinuz/i386 format
+;
+;  This file is part of the UPX executable compressor.
+;
+;  Copyright (C) 1996-2000 Markus Franz Xaver Johannes Oberhumer
+;  Copyright (C) 1996-2000 Laszlo Molnar
+;  All Rights Reserved.
+;
+;  UPX and the UCL library are free software; you can redistribute them
+;  and/or modify them under the terms of the GNU General Public License as
+;  published by the Free Software Foundation; either version 2 of
+;  the License, or (at your option) any later version.
+;
+;  This program is distributed in the hope that it will be useful,
+;  but WITHOUT ANY WARRANTY; without even the implied warranty of
+;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;  GNU General Public License for more details.
+;
+;  You should have received a copy of the GNU General Public License
+;  along with this program; see the file COPYING.
+;  If not, write to the Free Software Foundation, Inc.,
+;  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+;
+;  Markus F.X.J. Oberhumer                   Laszlo Molnar
+;  markus.oberhumer@jk.uni-linz.ac.at        ml1050@cdata.tvnet.hu
+;
+
+
+%define         jmps    jmp short
+%define         jmpn    jmp near
+%include        "macros.ash"
+
+                BITS    32
+                SECTION .text
+                ORG     0
+
+; =============
+; ============= ENTRY POINT
+; =============
+
+start:
+;       __LINUZ000__
+                cli
+                xor     eax, eax
+                mov     al, 0x18
+                mov     ds, eax
+                mov     es, eax
+                mov     ss, eax
+                mov     esp, 'STAK'     ; 0x90000
+
+                mov     eax, 'KEIP'     ; 0x100000 - address of startup_32
+                push    eax
+                push    edi
+                push    esi
+                or      ebp, byte -1
+
+%ifdef  __LBZIMAGE__
+                mov     esi, 'ESI0'
+                mov     edi, 'EDI0'
+                mov     ecx, 'ECX0'
+
+                std
+                rep
+                movsd
+                cld
+
+                mov     esi, 'ESI1'
+                xchg    eax, edi
+                jmp     .1 + 'JMPD'     ; jump to the copied decompressor
+.1:
+%else;  __LZIMAGE0__
+
+                cld
+                mov     esi, 'ESI1'
+                xchg    eax, edi
+
+; this checka20 stuff looks very unneccessary to me
+checka20:
+                inc     eax
+                mov     [ebp + 1], eax
+                cmp     [edi], eax
+                je      checka20
+
+%endif; __LZCUTPOI__
+
+; =============
+; ============= DECOMPRESSION
+; =============
+
+%include      "n2b_d32.ash"
+%include      "n2d_d32.ash"
+
+; =============
+;       __LINUZ990__
+                pop     esi
+                pop     edi
+                xor     ebx, ebx        ; booting the 1st cpu
+                retn
+
+; =============
+; ============= CUT HERE
+; =============
+
+%include        "header.ash"
+
+eof:
+;       __LITHEEND__
+                section .data
+                dd      -1
+                dw      eof
+