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stub loader for Linux Elf PowerPC32
Added Files: m_lx_elfppc32.c l_lx_elfppc32.lds fold_elfppc32.S l_lx_elfppc32.S fold_elfppc32.h l_lx_elfppc32.h [these two created by Makefile] committer: jreiser <jreiser> 1108861182 +0000
This commit is contained in:
John Reiser
parent
9cb8d7bca6
commit
7818596271
89
src/stub/fold_elfppc32.S
Normal file
89
src/stub/fold_elfppc32.S
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@ -0,0 +1,89 @@
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#include "ppc_regs.h"
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sz_b_info= 12
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sz_unc= 0
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sz_cpr= 4
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sz_l_info= 12
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sz_p_info= 12
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OVERHEAD= 2048
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LINKAREA= 2*4 # SysV C linkage area: (sp, lr)
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/* In:
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r31= &decompress; also 8+ (char *)&(offset to {l_info; p_info; b_info})
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*/
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fold_begin:
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call L90
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#include "ppc_bxx.S"
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/* The SysV convention for argument registers after execve is nice:
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a0= argc
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a1= argv
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a2= envp
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a3= auxvp
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a4= fini
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sp= ~0xf & (-2*4 + (void *)&argc) # 0(sp): old_sp, pc
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Instead, Linux gives only
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sp= &{argc,argv...,0,env...,0,auxv...,strings} # 16-byte aligned?
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We must figure out the rest, particularly auxvp.
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*/
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zfind:
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lwz t0,0(a6); addi a6,a6,4
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cmpi cr7,t0,0; bne+ cr7,zfind
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ret
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L90:
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mflr a5 # &ppcbxx: f_unfilter
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lwz a6,0(sp) # sp at execve
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call zfind # a6= &env
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call zfind # a6= &Elf32_auxv
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mr a4,r31 # &decompress: f_expand
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la a2,-OVERHEAD(sp) # &Elf32_Ehdr temporary space
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lwz a1,-8(r31) # total size = offset to {l_info; p_info; b_info}
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subf a0,a1,r31 # &l_info
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lwz a3,sz_unc+sz_p_info+sz_l_info(a0) # sz_elf_headers
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addi sp,sp,-(LINKAREA+OVERHEAD)
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call upx_main # Out: a0= entry
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/* entry= upx_main(l_info *, total_size, Elf32_Ehdr *, sz_ehdr, f_decomp, f_unf, Elf32_auxv_t *) */
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mtlr a0 # entry address
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lmw r2,4+LINKAREA+OVERHEAD(sp) # restore registers r2 thru r31
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lwz r1, LINKAREA+OVERHEAD(sp) # restore r1; deallocate space
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trap # debugging
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ret # enter /lib/ld.so.1
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SYS_exit= 1
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SYS_fork= 2
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SYS_read= 3
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SYS_write= 4
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SYS_open= 5
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SYS_close= 6
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SYS_brk= 45
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SYS_mmap= 90
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SYS_munmap= 91
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SYS_mprotect= 125
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mmap: .globl mmap
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li 0,SYS_mmap
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sysgo:
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sc
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bns+ no_fail # 'bns': branch if No Summary[Overflow]
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li a0,-1 # failure; IGNORE errno
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no_fail:
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ret
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exit: .globl exit
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li 0,SYS_exit; b sysgo
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read: .globl read
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li 0,SYS_read; b sysgo
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open: .globl open
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li 0,SYS_open; b sysgo
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close: .globl close
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li 0,SYS_close; b sysgo
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mprotect: .globl mprotect
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li 0,SYS_mprotect; b sysgo
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munmap: .globl munmap
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li 0,SYS_munmap; b sysgo
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brk: .globl brk
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li 0,SYS_brk; b sysgo
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181
src/stub/fold_elfppc32.h
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181
src/stub/fold_elfppc32.h
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@ -0,0 +1,181 @@
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/* fold_elfppc32.h -- created from fold_elfppc32.bin, 2356 (0x934) bytes
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This file is part of the UPX executable compressor.
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Copyright (C) 1996-2005 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996-2005 Laszlo Molnar
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All Rights Reserved.
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UPX and the UCL library are free software; you can redistribute them
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and/or modify them under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer Laszlo Molnar
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<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
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*/
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#define LINUX_ELFPPC32_FOLD_ADLER32 0x15a29be0
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#define LINUX_ELFPPC32_FOLD_CRC32 0x2e07dd6d
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unsigned char linux_elfppc32_fold[2356] = {
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127, 69, 76, 70, 1, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 0 */
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0, 2, 0, 20, 0, 0, 0, 1, 0, 16, 0,128, 0, 0, 0, 52, /* 0x 10 */
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0, 0, 7,244, 0, 0, 0, 0, 0, 52, 0, 32, 0, 2, 0, 40, /* 0x 20 */
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0, 8, 0, 7, 0, 0, 0, 1, 0, 0, 0, 0, 0, 16, 0, 0, /* 0x 30 */
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0, 16, 0, 0, 0, 0, 7,164, 0, 0, 7,164, 0, 0, 0, 5, /* 0x 40 */
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0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 7,164, 0, 16, 7,164, /* 0x 50 */
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0, 16, 7,164, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, /* 0x 60 */
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0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 70 */
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72, 0, 0,113, 40, 6, 0,208, 76,130, 0, 32, 84,132,240,191, /* 0x 80 */
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77,130, 0, 32, 56,165, 1, 32,124,103, 27,120, 56, 99,255,252, /* 0x 90 */
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124,137, 3,166, 72, 0, 0, 32,125, 99, 16, 80,125,107, 58, 20, /* 0x a0 */
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85,107, 80, 42,125,107, 86,112, 81, 98, 1,186,144, 67, 0, 0, /* 0x b0 */
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78, 64, 0, 32,132, 67, 0, 4, 84, 75, 85,190,124, 11, 40, 64, /* 0x c0 */
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65,162,255,216, 66, 0,255,240, 78,128, 0, 32,128, 73, 0, 0, /* 0x d0 */
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57, 41, 0, 4, 47,130, 0, 0, 64,158,255,244, 78,128, 0, 32, /* 0x e0 */
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125, 8, 2,166,129, 33, 0, 0, 75,255,255,229, 75,255,255,225, /* 0x f0 */
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127,231,251,120, 56,161,248, 0,128,159,255,248,124,100,248, 80, /* 0x 100 */
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128,195, 0, 24, 56, 33,247,248, 72, 0, 5, 61,124,104, 3,166, /* 0x 110 */
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184, 65, 8, 12,128, 33, 8, 8,127,224, 0, 8, 78,128, 0, 32, /* 0x 120 */
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56, 0, 0, 90, 68, 0, 0, 2, 64,163, 0, 8, 56, 96,255,255, /* 0x 130 */
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78,128, 0, 32, 56, 0, 0, 1, 75,255,255,236, 56, 0, 0, 3, /* 0x 140 */
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75,255,255,228, 56, 0, 0, 5, 75,255,255,220, 56, 0, 0, 6, /* 0x 150 */
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75,255,255,212, 56, 0, 0,125, 75,255,255,204, 56, 0, 0, 91, /* 0x 160 */
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75,255,255,196, 56, 0, 0, 45, 75,255,255,188,124, 8, 2,166, /* 0x 170 */
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148, 33,255,240,144, 1, 0, 20,128, 3, 0, 0,129, 35, 0, 4, /* 0x 180 */
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127,128, 40, 64, 64,188, 0, 12, 56, 96, 0,127, 75,255,255,169, /* 0x 190 */
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47,133, 0, 0, 65,158, 0, 28,124,169, 3,166,136, 9, 0, 0, /* 0x 1a0 */
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57, 41, 0, 1,152, 4, 0, 0, 56,132, 0, 1, 66, 0,255,240, /* 0x 1b0 */
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128, 3, 0, 0,129, 35, 0, 4,124, 5, 0, 80,144, 3, 0, 0, /* 0x 1c0 */
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125, 41, 42, 20,128, 1, 0, 20, 56, 33, 0, 16,145, 35, 0, 4, /* 0x 1d0 */
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124, 8, 3,166, 78,128, 0, 32,124, 8, 2,166,148, 33,255,192, /* 0x 1e0 */
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191,129, 0, 48,124,159, 35,120,124,126, 27,120,124,188, 43,120, /* 0x 1f0 */
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144, 1, 0, 68,124,221, 51,120,128, 4, 0, 0, 47,128, 0, 0, /* 0x 200 */
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65,158, 1, 32, 56,160, 0, 12,127,195,243,120, 56,129, 0, 16, /* 0x 210 */
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75,255,255, 93,129, 33, 0, 16,128,161, 0, 20, 47,137, 0, 0, /* 0x 220 */
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64,190, 0, 36, 60, 0, 33, 88, 96, 0, 80, 85,127,133, 0, 0, /* 0x 230 */
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64,190, 0, 28,128, 30, 0, 0, 47,128, 0, 0, 65,190, 0,228, /* 0x 240 */
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72, 0, 0, 12, 47,133, 0, 0, 64,190, 0, 12, 56, 96, 0,127, /* 0x 250 */
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75,255,254,229,127, 5, 72, 64, 65,185,255,244,128, 31, 0, 0, /* 0x 260 */
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127,137, 0, 64, 65,189,255,232,128, 31, 0, 4, 64,152, 0,132, /* 0x 270 */
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124,164, 43,120,128,126, 0, 4,124, 5, 3,120, 56,193, 0, 32, /* 0x 280 */
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136,225, 0, 24,127,136, 3,166, 78,128, 0, 33, 47,131, 0, 0, /* 0x 290 */
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64,190,255,188,128,129, 0, 32,128, 1, 0, 16,127,132, 0, 0, /* 0x 2a0 */
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64,190,255,172,136,193, 0, 25, 49, 61,255,255,124, 9,233, 16, /* 0x 2b0 */
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125, 38, 0,208, 85, 41, 15,254,125, 43, 0, 57, 65,162, 0, 20, /* 0x 2c0 */
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128,127, 0, 4,127,168, 3,166,136,161, 0, 26, 78,128, 0, 33, /* 0x 2d0 */
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128, 30, 0, 4,129, 97, 0, 20,129, 62, 0, 0,124, 0, 90, 20, /* 0x 2e0 */
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125, 43, 72, 80,144, 30, 0, 4,145, 62, 0, 0, 72, 0, 0, 16, /* 0x 2f0 */
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124, 4, 3,120,127,195,243,120, 75,255,254,117,129, 97, 0, 16, /* 0x 300 */
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129, 63, 0, 0,128, 31, 0, 4,125, 43, 72, 80, 47,137, 0, 0, /* 0x 310 */
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124, 0, 90, 20,144, 31, 0, 4,145, 63, 0, 0, 75,255,254,228, /* 0x 320 */
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128, 1, 0, 68,187,129, 0, 48, 56, 33, 0, 64,124, 8, 3,166, /* 0x 330 */
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78,128, 0, 32,124,128, 35,121,124, 9, 3,166, 77,130, 0, 32, /* 0x 340 */
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56, 0, 0, 0,152, 3, 0, 0, 56, 99, 0, 1, 66, 0,255,248, /* 0x 350 */
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78,128, 0, 32, 44, 3, 0, 0, 77,130, 0, 32,112, 96, 0, 1, /* 0x 360 */
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76,130, 0, 32, 49, 68,255,255,125,106, 33, 16,128, 3, 0, 0, /* 0x 370 */
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127,128, 32, 0,104, 9, 0, 1, 33, 73, 0, 0,125, 42, 73, 20, /* 0x 380 */
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125, 42, 88, 57, 65,158, 0, 8, 65,162, 0, 16,144,163, 0, 4, /* 0x 390 */
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144,131, 0, 0, 78,128, 0, 32, 56, 99, 0, 8, 75,255,255,208, /* 0x 3a0 */
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124, 8, 2,166,148, 33,255,160,125,128, 0, 38,190, 65, 0, 40, /* 0x 3b0 */
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124,122, 27,120,124,151, 35,120,144, 1, 0,100,124,178, 43,120, /* 0x 3c0 */
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161, 67, 0, 44,124,211, 51,120,160, 3, 0, 16,124,244, 59,120, /* 0x 3d0 */
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53, 74,255,255,129, 35, 0, 28,104, 0, 0, 3,145,129, 0, 36, /* 0x 3e0 */
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124, 0, 0,208,127, 99, 74, 20, 84, 3, 46,246,125, 21, 67,120, /* 0x 3f0 */
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56, 99, 0, 34,127,107,219,120, 59,128,255,255, 59,192, 0, 0, /* 0x 400 */
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59,224, 0, 0, 65,128, 0, 72, 57, 74, 0, 1,125, 73, 3,166, /* 0x 410 */
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128, 11, 0, 0, 47,128, 0, 1, 64,190, 0, 44,129, 43, 0, 8, /* 0x 420 */
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127,137,224, 64, 64,156, 0, 12,131,235, 0, 16,125, 60, 75,120, /* 0x 430 */
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128, 11, 0, 20,124, 0, 74, 20,127,158, 0, 64, 64,156, 0, 8, /* 0x 440 */
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124, 30, 3,120, 57,107, 0, 32, 66, 0,255,200, 87,128, 5, 62, /* 0x 450 */
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87,156, 0, 38,125, 60,240, 80,127,255, 2, 20, 57, 41, 15,255, /* 0x 460 */
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56, 31, 15,255, 85, 62, 0, 38, 84, 31, 0, 38,124,102, 27,120, /* 0x 470 */
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127,196,243,120, 56,160, 0, 7, 56,224, 0, 0, 57, 0, 0, 0, /* 0x 480 */
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127,131,227,120, 75,255,252,157,124,159,240, 80,124, 3,242, 20, /* 0x 490 */
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124,125, 27,120,124, 99,250, 20,144, 1, 0, 8, 75,255,252,193, /* 0x 4a0 */
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160, 26, 0, 44, 58,192, 0, 0,127, 60,232, 80,127,150, 0, 0, /* 0x 4b0 */
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64,156, 1, 84, 46, 23, 0, 0, 65,146, 0, 40,128, 27, 0, 0, /* 0x 4c0 */
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47,128, 0, 6, 64,190, 0, 28,128,187, 0, 8,126, 99,155,120, /* 0x 4d0 */
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56,128, 0, 3,124,165,202, 20, 75,255,254,125, 72, 0, 1, 20, /* 0x 4e0 */
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128, 27, 0, 0, 47,128, 0, 1, 64,190, 1, 8,129, 27, 0, 8, /* 0x 4f0 */
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60, 0,115, 81,129, 59, 0, 24, 96, 0, 98, 64,129, 91, 0, 20, /* 0x 500 */
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85, 30, 5, 62,129,123, 0, 16, 85, 41, 22,250,124, 0, 76, 48, /* 0x 510 */
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127,136, 82, 20,127,254, 64, 80, 84, 24, 7,126,145, 97, 0, 16, /* 0x 520 */
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127,171,242, 20,145, 1, 0, 20,127,255,202, 20,127,156,202, 20, /* 0x 530 */
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65,146, 0, 12, 56,192, 0, 50, 72, 0, 0, 8, 56,192, 0, 18, /* 0x 540 */
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129, 27, 0, 4,127,227,251,120,127,164,235,120, 56,160, 0, 3, /* 0x 550 */
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125, 30, 64, 80,126, 71,147,120, 75,255,251,201,127,159, 24, 0, /* 0x 560 */
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64,158, 0, 84, 65,178, 0, 24,126,227,187,120, 56,129, 0, 16, /* 0x 570 */
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126,133,163,120,126,166,171,120, 75,255,252, 97,127,196,243,120, /* 0x 580 */
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127,227,251,120, 75,255,253,177,124, 29, 0,208, 84, 30, 5, 62, /* 0x 590 */
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124,127,234, 20,127,196,243,120, 75,255,253,157,127,227,251,120, /* 0x 5a0 */
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127,164,235,120,127, 5,195,120, 75,255,251,173, 47,131, 0, 0, /* 0x 5b0 */
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65,190, 0, 12, 56, 96, 0,127, 75,255,251,125,124, 29,242, 20, /* 0x 5c0 */
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127,255, 2, 20,127,159,224, 64, 64,188, 0, 40,124,159,224, 80, /* 0x 5d0 */
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127, 5,195,120,127,227,251,120, 56,192, 0, 50, 56,224, 0, 0, /* 0x 5e0 */
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57, 0, 0, 0, 75,255,251, 61,127,159, 24, 0, 64,190,255,200, /* 0x 5f0 */
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160, 26, 0, 44, 58,214, 0, 1, 59,123, 0, 32,127,150, 0, 0, /* 0x 600 */
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75,255,254,176, 47,151, 0, 0, 65,158, 0, 24,160, 26, 0, 16, /* 0x 610 */
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47,128, 0, 3, 65,158, 0, 12,128, 97, 0, 8, 75,255,251, 73, /* 0x 620 */
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128,122, 0, 24,128, 1, 0,100,129,129, 0, 36,124, 99,202, 20, /* 0x 630 */
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124, 8, 3,166,186, 65, 0, 40,125,128,129, 32, 56, 33, 0, 96, /* 0x 640 */
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78,128, 0, 32,124, 8, 2,166,148, 33,255,192, 56,132,255,232, /* 0x 650 */
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191, 97, 0, 44,144,129, 0, 8,124,191, 43,120,144, 1, 0, 68, /* 0x 660 */
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56, 3, 0, 24,144, 1, 0, 12,124,229, 59,120,128, 3, 0, 24, /* 0x 670 */
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56,192, 0, 0,200, 1, 0, 8, 56, 97, 0, 8, 56,129, 0, 16, /* 0x 680 */
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59,223, 0, 52,125, 61, 75,120,124,251, 59,120,144, 1, 0, 16, /* 0x 690 */
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125, 28, 67,120,216, 1, 0, 24,147,225, 0, 20, 75,255,251, 61, /* 0x 6a0 */
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128,190, 0, 8,127,163,235,120, 56,128, 0, 3, 56,165, 0, 52, /* 0x 6b0 */
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75,255,252,165,160,191, 0, 44,127,163,235,120, 56,128, 0, 5, /* 0x 6c0 */
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75,255,252,149,128,191, 0, 24,127,163,235,120, 56,128, 0, 9, /* 0x 6d0 */
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75,255,252,133,127,103,219,120,127,136,227,120,127,227,251,120, /* 0x 6e0 */
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127,166,235,120, 56,129, 0, 24, 56,160, 0, 0, 59, 96, 0, 0, /* 0x 6f0 */
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75,255,252,177,160, 31, 0, 44,124,124, 27,120,127,155, 0, 0, /* 0x 700 */
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64,156, 0,124,128, 30, 0, 0, 59,123, 0, 1, 56,128, 0, 0, /* 0x 710 */
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56,160, 0, 0, 47,128, 0, 3, 64,190, 0, 88,128,126, 0, 8, /* 0x 720 */
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75,255,250, 37,127,228,251,120,124,125, 27,121, 56,160, 2, 0, /* 0x 730 */
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65,128, 0, 40, 75,255,250, 9, 56,128, 0, 0, 47,131, 2, 0, /* 0x 740 */
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127,165,235,120,127,227,251,120, 56,192, 0, 0, 56,224, 0, 0, /* 0x 750 */
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57, 0, 0, 0, 65,190, 0, 12, 56, 96, 0,127, 75,255,249,217, /* 0x 760 */
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75,255,252, 65,124,124, 27,120,127,163,235,120, 75,255,249,225, /* 0x 770 */
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160, 31, 0, 44, 59,222, 0, 32, 75,255,255,132,128, 1, 0, 68, /* 0x 780 */
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127,131,227,120,187, 97, 0, 44, 56, 33, 0, 64,124, 8, 3,166, /* 0x 790 */
|
||||
78,128, 0, 32, 0, 71, 67, 67, 58, 32, 40, 71, 78, 85, 41, 32, /* 0x 7a0 */
|
||||
51, 46, 52, 46, 49, 0, 0, 46,115,104,115,116,114,116, 97, 98, /* 0x 7b0 */
|
||||
0, 46,116,101,120,116, 0, 46, 98,115,115, 0, 46,115,100, 97, /* 0x 7c0 */
|
||||
116, 97, 0, 46,115,100, 97,116, 97, 50, 0, 46,110,111,116,101, /* 0x 7d0 */
|
||||
46, 71, 78, 85, 45,115,116, 97, 99,107, 0, 46, 99,111,109,109, /* 0x 7e0 */
|
||||
101,110,116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 7f0 */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 800 */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, /* 0x 810 */
|
||||
0, 0, 0, 1, 0, 0, 0, 6, 0, 16, 0,128, 0, 0, 0,128, /* 0x 820 */
|
||||
0, 0, 7, 36, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, /* 0x 830 */
|
||||
0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 0, 8, 0, 0, 0, 3, /* 0x 840 */
|
||||
0, 16, 7,164, 0, 0, 7,164, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 850 */
|
||||
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 22, /* 0x 860 */
|
||||
0, 0, 0, 1, 0, 0, 0, 3, 0, 16, 7,164, 0, 0, 7,164, /* 0x 870 */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, /* 0x 880 */
|
||||
0, 0, 0, 0, 0, 0, 0, 29, 0, 0, 0, 1, 0, 0, 0, 2, /* 0x 890 */
|
||||
0, 16, 7,164, 0, 0, 7,164, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x 8a0 */
|
||||
0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 37, /* 0x 8b0 */
|
||||
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7,164, /* 0x 8c0 */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, /* 0x 8d0 */
|
||||
0, 0, 0, 0, 0, 0, 0, 53, 0, 0, 0, 1, 0, 0, 0, 0, /* 0x 8e0 */
|
||||
0, 0, 0, 0, 0, 0, 7,164, 0, 0, 0, 18, 0, 0, 0, 0, /* 0x 8f0 */
|
||||
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, /* 0x 900 */
|
||||
0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7,182, /* 0x 910 */
|
||||
0, 0, 0, 62, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, /* 0x 920 */
|
||||
0, 0, 0, 0 /* 0x 930 */
|
||||
};
|
||||
97
src/stub/l_lx_elfppc32.S
Normal file
97
src/stub/l_lx_elfppc32.S
Normal file
|
|
@ -0,0 +1,97 @@
|
|||
/* l_lx_elfppc.S -- Linux program entry point & decompressor (Elf binary)
|
||||
*
|
||||
* This file is part of the UPX executable compressor.
|
||||
*
|
||||
* Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
|
||||
* Copyright (C) 1996-2004 Laszlo Molnar
|
||||
* Copyright (C) 2000-2005 John F. Reiser
|
||||
* 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
|
||||
* <mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
|
||||
*
|
||||
* John F. Reiser
|
||||
* <jreiser@users.sourceforge.net>
|
||||
*/
|
||||
|
||||
#include "ppc_regs.h"
|
||||
|
||||
/*__MACOS000__*/
|
||||
_start: .globl _start
|
||||
call main # must be exactly 1 instruction; link_register= &decompress
|
||||
#include "ppc_d_nrv2e.S"
|
||||
|
||||
sz_b_info= 12
|
||||
sz_unc= 0
|
||||
sz_cpr= 4
|
||||
|
||||
PROT_READ= 1
|
||||
PROT_WRITE= 2
|
||||
PROT_EXEC= 4
|
||||
|
||||
MAP_PRIVATE= 2
|
||||
MAP_FIXED= 0x10
|
||||
MAP_ANONYMOUS= 0x20
|
||||
|
||||
SYS_mmap= 90
|
||||
|
||||
PAGE_SHIFT= 12
|
||||
PAGE_SIZE = -(~0<<PAGE_SHIFT)
|
||||
|
||||
/* Decompress the rest of this loader, and jump to it. */
|
||||
unfold:
|
||||
mflr r30 # &{ b_info={sz_unc, sz_cpr, {4 char}}, folded_loader...}
|
||||
|
||||
/* linux ignores fd and off_t when MAP_ANONYMOUS
|
||||
li a5,0 # off_t
|
||||
li a4,-1 # BSD fd
|
||||
*/
|
||||
li a3,MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS
|
||||
lwz a0,sz_cpr(r30)
|
||||
li a2,PROT_READ | PROT_WRITE | PROT_EXEC
|
||||
add a0,a0,r30
|
||||
li a1,PAGE_SIZE
|
||||
addi a0,a0,sz_b_info+PAGE_SIZE-1
|
||||
li 0,SYS_mmap
|
||||
rlwinm a0,a0,0,0,31-PAGE_SHIFT # next page boundary after fold
|
||||
sc
|
||||
bso- fail # Branch if SummaryOverflow (syscall failure), unlikely
|
||||
|
||||
mtlr a0 # &continuation
|
||||
la ldst,31*4(sp) # &do_not_care
|
||||
mr dst,a0
|
||||
mtctr r31
|
||||
lwz lsrc,sz_cpr(r30)
|
||||
addi src,r30,sz_b_info
|
||||
bctr # goto decomrpess; return to link register (mmap'ed page)
|
||||
fail:
|
||||
trap
|
||||
main:
|
||||
stwu r1,-32*4(sp) # allocate space (keeping 0 mod 16), save r1
|
||||
stmw r2,4(sp) # save registers r2 thru r31
|
||||
mflr r31 # &decompress
|
||||
call unfold
|
||||
/* { b_info={sz_unc, sz_cpr, {4 char}}, folded_loader...} */
|
||||
|
||||
eof:
|
||||
/*__XTHEENDX__*/
|
||||
|
||||
/*
|
||||
vi:ts=8:et:nowrap
|
||||
*/
|
||||
|
||||
60
src/stub/l_lx_elfppc32.h
Normal file
60
src/stub/l_lx_elfppc32.h
Normal file
|
|
@ -0,0 +1,60 @@
|
|||
/* l_lx_elfppc32.h -- created from l_lx_elfppc32.bin, 432 (0x1b0) bytes
|
||||
|
||||
This file is part of the UPX executable compressor.
|
||||
|
||||
Copyright (C) 1996-2005 Markus Franz Xaver Johannes Oberhumer
|
||||
Copyright (C) 1996-2005 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
|
||||
<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
|
||||
*/
|
||||
|
||||
|
||||
#define LINUX_ELFPPC32_LOADER_ADLER32 0xf2b08e0d
|
||||
#define LINUX_ELFPPC32_LOADER_CRC32 0x2364b765
|
||||
|
||||
unsigned char linux_elfppc32_loader[432] = {
|
||||
72, 0, 1,161,144,166, 0, 0,124,132, 26, 20, 60, 0,128, 0, /* 0x 0 */
|
||||
61, 32,128, 0, 56, 99,255,255, 56,165,255,255, 57, 64,255,255, /* 0x 10 */
|
||||
125,168, 2,166, 72, 0, 0, 40, 57, 32, 0, 1,125, 41, 28, 44, /* 0x 20 */
|
||||
56, 99, 0, 4,124, 9, 0, 64,125, 41, 72, 20, 97, 41, 0, 1, /* 0x 30 */
|
||||
78,128, 0, 32,141, 3, 0, 1,157, 5, 0, 1,124, 9, 0, 64, /* 0x 40 */
|
||||
125, 41, 74, 20, 65,162,255,213, 65,129,255,236, 56,224, 0, 1, /* 0x 50 */
|
||||
72, 0, 0, 20, 56,231,255,255,125, 41, 72, 21, 65,162,255,189, /* 0x 60 */
|
||||
124,231, 57, 20,125, 41, 72, 21, 65,162,255,177,124,231, 57, 20, /* 0x 70 */
|
||||
124, 9, 0, 64,125, 41, 74, 20, 65,162,255,161, 65,160,255,216, /* 0x 80 */
|
||||
57, 0, 0, 0, 52,231,255,253, 84,231, 64, 46, 65,128, 0, 32, /* 0x 90 */
|
||||
140, 67, 0, 1,124,234, 16,249,125, 74, 14,112, 65,130, 0,136, /* 0x a0 */
|
||||
112, 66, 0, 1, 65,162, 0, 80, 72, 0, 0, 20,124, 9, 0, 64, /* 0x b0 */
|
||||
125, 41, 74, 20, 65,162,255,101, 65,161, 0, 60, 57, 0, 0, 1, /* 0x c0 */
|
||||
124, 9, 0, 64,125, 41, 74, 20, 65,162,255, 81, 65,161, 0, 40, /* 0x d0 */
|
||||
125, 41, 72, 21, 65,162,255, 69,125, 8, 65, 20,124, 9, 0, 64, /* 0x e0 */
|
||||
125, 41, 74, 20, 65,162,255, 53, 65,160,255,232, 57, 8, 0, 2, /* 0x f0 */
|
||||
72, 0, 0, 16,125, 41, 72, 21, 65,162,255, 33,125, 8, 65, 20, /* 0x 100 */
|
||||
32,234,250,255, 57, 8, 0, 2,125, 8, 1,148,124,234, 42, 20, /* 0x 110 */
|
||||
125, 9, 3,166,141, 7, 0, 1,157, 5, 0, 1, 66, 0,255,248, /* 0x 120 */
|
||||
75,255,255, 28,128, 6, 0, 0,125,168, 3,166, 56,165, 0, 1, /* 0x 130 */
|
||||
56, 99, 0, 1,124,160, 40, 80,124,100, 24, 80,144,166, 0, 0, /* 0x 140 */
|
||||
78,128, 0, 32,127,200, 2,166, 56,192, 0, 50,128,126, 0, 4, /* 0x 150 */
|
||||
56,160, 0, 7,124, 99,242, 20, 56,128, 16, 0, 56, 99, 16, 11, /* 0x 160 */
|
||||
56, 0, 0, 90, 84, 99, 0, 38, 68, 0, 0, 2, 65,131, 0, 32, /* 0x 170 */
|
||||
124,104, 3,166, 56,193, 0,124,124,101, 27,120,127,233, 3,166, /* 0x 180 */
|
||||
128,158, 0, 4, 56,126, 0, 12, 78,128, 4, 32,127,224, 0, 8, /* 0x 190 */
|
||||
148, 33,255,128,188, 65, 0, 4,127,232, 2,166, 75,255,255,169 /* 0x 1a0 */
|
||||
};
|
||||
48
src/stub/l_lx_elfppc32.lds
Normal file
48
src/stub/l_lx_elfppc32.lds
Normal file
|
|
@ -0,0 +1,48 @@
|
|||
/* l_lx_elfppc.lds --
|
||||
|
||||
This file is part of the UPX executable compressor.
|
||||
|
||||
Copyright (C) 2000-2005 John F. Reiser
|
||||
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
|
||||
<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
|
||||
|
||||
John F. Reiser
|
||||
<jreiser@users.sourceforge.net>
|
||||
*/
|
||||
|
||||
|
||||
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
|
||||
OUTPUT_ARCH(powerpc:common)
|
||||
/*ENTRY(_start)*/
|
||||
PHDRS
|
||||
{
|
||||
text PT_LOAD FILEHDR PHDRS ;
|
||||
data PT_LOAD ; /* for setting brk(0) */
|
||||
}
|
||||
SECTIONS
|
||||
{
|
||||
. = 0x00100000 + SIZEOF_HEADERS + 12; /* 12==sizeof(l_info) */
|
||||
.text : {
|
||||
*(.text)
|
||||
*(.data)
|
||||
} : text
|
||||
.data : {
|
||||
} : data
|
||||
}
|
||||
364
src/stub/m_lx_elfppc32.c
Normal file
364
src/stub/m_lx_elfppc32.c
Normal file
|
|
@ -0,0 +1,364 @@
|
|||
/* m_lx_elfppc32.c -- stub loader for Linux ELF PowerPC32 executable
|
||||
|
||||
This file is part of the UPX executable compressor.
|
||||
|
||||
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
|
||||
Copyright (C) 1996-2004 Laszlo Molnar
|
||||
Copyright (C) 2000-2004 John F. Reiser
|
||||
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
|
||||
<mfx@users.sourceforge.net> <ml1050@users.sourceforge.net>
|
||||
|
||||
John F. Reiser
|
||||
<jreiser@users.sourceforge.net>
|
||||
*/
|
||||
|
||||
|
||||
#include "linux.hh"
|
||||
|
||||
/*************************************************************************
|
||||
// configuration section
|
||||
**************************************************************************/
|
||||
|
||||
// In order to make it much easier to move this code at runtime and execute
|
||||
// it at an address different from it load address: there must be no
|
||||
// static data, and no string constants.
|
||||
|
||||
#define MAX_ELF_HDR 512 // Elf32_Ehdr + n*Elf32_Phdr must fit in this
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
// "file" util
|
||||
**************************************************************************/
|
||||
|
||||
typedef struct {
|
||||
size_t size; // must be first to match size[0] uncompressed size
|
||||
char *buf;
|
||||
} Extent;
|
||||
|
||||
|
||||
static void
|
||||
xread(Extent *x, char *buf, size_t count)
|
||||
{
|
||||
char *p=x->buf, *q=buf;
|
||||
size_t j;
|
||||
if (x->size < count) {
|
||||
exit(127);
|
||||
}
|
||||
for (j = count; 0!=j--; ++p, ++q) {
|
||||
*q = *p;
|
||||
}
|
||||
x->buf += count;
|
||||
x->size -= count;
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
// util
|
||||
**************************************************************************/
|
||||
|
||||
#if 1 //{ save space
|
||||
#define ERR_LAB error: exit(127);
|
||||
#define err_exit(a) goto error
|
||||
#else //}{ save debugging time
|
||||
#define ERR_LAB
|
||||
static void
|
||||
err_exit(int a)
|
||||
{
|
||||
(void)a; // debugging convenience
|
||||
exit(127);
|
||||
}
|
||||
#endif //}
|
||||
|
||||
/*************************************************************************
|
||||
// UPX & NRV stuff
|
||||
**************************************************************************/
|
||||
|
||||
typedef void f_unfilter(
|
||||
nrv_byte *, // also addvalue
|
||||
nrv_uint,
|
||||
unsigned cto8, // junk in high 24 bits
|
||||
unsigned ftid
|
||||
);
|
||||
typedef int f_expand(
|
||||
const nrv_byte *, nrv_uint,
|
||||
nrv_byte *, nrv_uint *, unsigned );
|
||||
|
||||
static void
|
||||
unpackExtent(
|
||||
Extent *const xi, // input
|
||||
Extent *const xo, // output
|
||||
f_expand *const f_decompress,
|
||||
f_unfilter *f_unf
|
||||
)
|
||||
{
|
||||
while (xo->size) {
|
||||
struct b_info h;
|
||||
// Note: if h.sz_unc == h.sz_cpr then the block was not
|
||||
// compressible and is stored in its uncompressed form.
|
||||
|
||||
// Read and check block sizes.
|
||||
xread(xi, (char *)&h, sizeof(h));
|
||||
if (h.sz_unc == 0) { // uncompressed size 0 -> EOF
|
||||
if (h.sz_cpr != UPX_MAGIC_LE32) // h.sz_cpr must be h->magic
|
||||
err_exit(2);
|
||||
if (xi->size != 0) // all bytes must be written
|
||||
err_exit(3);
|
||||
break;
|
||||
}
|
||||
if (h.sz_cpr <= 0) {
|
||||
err_exit(4);
|
||||
ERR_LAB
|
||||
}
|
||||
if (h.sz_cpr > h.sz_unc
|
||||
|| h.sz_unc > xo->size ) {
|
||||
err_exit(5);
|
||||
}
|
||||
// Now we have:
|
||||
// assert(h.sz_cpr <= h.sz_unc);
|
||||
// assert(h.sz_unc > 0 && h.sz_unc <= blocksize);
|
||||
// assert(h.sz_cpr > 0 && h.sz_cpr <= blocksize);
|
||||
|
||||
if (h.sz_cpr < h.sz_unc) { // Decompress block
|
||||
nrv_uint out_len;
|
||||
int const j = (*f_decompress)(xi->buf, h.sz_cpr, xo->buf, &out_len,
|
||||
h.b_method);
|
||||
if (j != 0 || out_len != (nrv_uint)h.sz_unc)
|
||||
err_exit(7);
|
||||
if (h.b_ftid!=0 && f_unf) { // have filter
|
||||
(*f_unf)(xo->buf, out_len, h.b_cto8, h.b_ftid);
|
||||
}
|
||||
xi->buf += h.sz_cpr;
|
||||
xi->size -= h.sz_cpr;
|
||||
}
|
||||
else { // copy literal block
|
||||
xread(xi, xo->buf, h.sz_cpr);
|
||||
}
|
||||
xo->buf += h.sz_unc;
|
||||
xo->size -= h.sz_unc;
|
||||
}
|
||||
}
|
||||
|
||||
// Create (or find) an escape hatch to use when munmapping ourselves the stub.
|
||||
// Called by do_xmap to create it, and by assembler code to find it.
|
||||
static void *
|
||||
make_hatch(Elf32_Phdr const *const phdr)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
upx_bzero(char *p, size_t len)
|
||||
{
|
||||
if (len) do {
|
||||
*p++= 0;
|
||||
} while (--len);
|
||||
}
|
||||
#define bzero upx_bzero
|
||||
|
||||
|
||||
static void
|
||||
auxv_up(Elf32_auxv_t *av, int const type, unsigned const value)
|
||||
{
|
||||
if (av && 0==(1&(int)av)) /* PT_INTERP usually inhibits, except for hatch */
|
||||
for (;; ++av) {
|
||||
if (av->a_type==type || (av->a_type==AT_IGNORE && type!=AT_NULL)) {
|
||||
av->a_type = type;
|
||||
av->a_un.a_val = value;
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// The PF_* and PROT_* bits are {1,2,4}; the conversion table fits in 32 bits.
|
||||
#define REP8(x) \
|
||||
((x)|((x)<<4)|((x)<<8)|((x)<<12)|((x)<<16)|((x)<<20)|((x)<<24)|((x)<<28))
|
||||
#define EXP8(y) \
|
||||
((1&(y)) ? 0xf0f0f0f0 : (2&(y)) ? 0xff00ff00 : (4&(y)) ? 0xffff0000 : 0)
|
||||
#define PF_TO_PROT(pf) \
|
||||
((PROT_READ|PROT_WRITE|PROT_EXEC) & ( \
|
||||
( (REP8(PROT_EXEC ) & EXP8(PF_X)) \
|
||||
|(REP8(PROT_READ ) & EXP8(PF_R)) \
|
||||
|(REP8(PROT_WRITE) & EXP8(PF_W)) \
|
||||
) >> ((pf & (PF_R|PF_W|PF_X))<<2) ))
|
||||
|
||||
|
||||
// Find convex hull of PT_LOAD (the minimal interval which covers all PT_LOAD),
|
||||
// and mmap that much, to be sure that a kernel using exec-shield-randomize
|
||||
// won't place the first piece in a way that leaves no room for the rest.
|
||||
static unsigned long // returns relocation constant
|
||||
xfind_pages(unsigned mflags, Elf32_Phdr const *phdr, int phnum,
|
||||
char **const p_brk
|
||||
)
|
||||
{
|
||||
size_t lo= ~0, hi= 0, szlo= 0;
|
||||
char *addr;
|
||||
mflags += MAP_PRIVATE | MAP_ANONYMOUS; // '+' can optimize better than '|'
|
||||
for (; --phnum>=0; ++phdr) if (PT_LOAD==phdr->p_type) {
|
||||
if (phdr->p_vaddr < lo) {
|
||||
lo = phdr->p_vaddr;
|
||||
szlo = phdr->p_filesz;
|
||||
}
|
||||
if (hi < (phdr->p_memsz + phdr->p_vaddr)) {
|
||||
hi = phdr->p_memsz + phdr->p_vaddr;
|
||||
}
|
||||
}
|
||||
szlo += ~PAGE_MASK & lo; // page fragment on lo edge
|
||||
lo -= ~PAGE_MASK & lo; // round down to page boundary
|
||||
hi = PAGE_MASK & (hi - lo - PAGE_MASK -1); // page length
|
||||
szlo = PAGE_MASK & (szlo - PAGE_MASK -1); // page length
|
||||
addr = mmap((void *)lo, hi, PROT_READ|PROT_WRITE|PROT_EXEC, mflags, 0, 0);
|
||||
*p_brk = hi + addr; // the logical value of brk(0)
|
||||
munmap(szlo + addr, hi - szlo); // desirable if PT_LOAD non-contiguous
|
||||
return (unsigned long)addr - lo;
|
||||
}
|
||||
|
||||
static Elf32_Addr // entry address
|
||||
do_xmap(
|
||||
Elf32_Ehdr const *const ehdr,
|
||||
Extent *const xi,
|
||||
int const fdi,
|
||||
Elf32_auxv_t *const av,
|
||||
f_expand *const f_decompress,
|
||||
f_unfilter *const f_unf
|
||||
)
|
||||
{
|
||||
Elf32_Phdr const *phdr = (Elf32_Phdr const *) (ehdr->e_phoff +
|
||||
(char const *)ehdr);
|
||||
char *v_brk;
|
||||
unsigned long const reloc = xfind_pages(
|
||||
((ET_DYN!=ehdr->e_type) ? MAP_FIXED : 0), phdr, ehdr->e_phnum, &v_brk);
|
||||
int j;
|
||||
for (j=0; j < ehdr->e_phnum; ++phdr, ++j)
|
||||
if (xi && PT_PHDR==phdr->p_type) {
|
||||
auxv_up(av, AT_PHDR, phdr->p_vaddr + reloc);
|
||||
} else
|
||||
if (PT_LOAD==phdr->p_type) {
|
||||
unsigned const prot = PF_TO_PROT(phdr->p_flags);
|
||||
Extent xo;
|
||||
size_t mlen = xo.size = phdr->p_filesz;
|
||||
char *addr = xo.buf = (char *)phdr->p_vaddr;
|
||||
char *haddr = phdr->p_memsz + addr;
|
||||
size_t frag = (int)addr &~ PAGE_MASK;
|
||||
mlen += frag;
|
||||
addr -= frag;
|
||||
addr += reloc;
|
||||
haddr += reloc;
|
||||
|
||||
if (addr != mmap(addr, mlen, PROT_READ | PROT_WRITE,
|
||||
MAP_FIXED | MAP_PRIVATE | (xi ? MAP_ANONYMOUS : 0),
|
||||
fdi, phdr->p_offset - frag) ) {
|
||||
err_exit(8);
|
||||
}
|
||||
if (xi) {
|
||||
unpackExtent(xi, &xo, f_decompress, f_unf);
|
||||
}
|
||||
bzero(addr, frag); // fragment at lo end
|
||||
frag = (-mlen) &~ PAGE_MASK; // distance to next page boundary
|
||||
bzero(mlen+addr, frag); // fragment at hi end
|
||||
if (xi) {
|
||||
void *const hatch = make_hatch(phdr);
|
||||
if (0!=hatch) {
|
||||
/* always update AT_NULL, especially for compressed PT_INTERP */
|
||||
auxv_up((Elf32_auxv_t *)(~1 & (int)av), AT_NULL, (unsigned)hatch);
|
||||
}
|
||||
}
|
||||
if (0!=mprotect(addr, mlen, prot)) {
|
||||
err_exit(10);
|
||||
ERR_LAB
|
||||
}
|
||||
addr += mlen + frag; /* page boundary on hi end */
|
||||
if (addr < haddr) { // need pages for .bss
|
||||
if (addr != mmap(addr, haddr - addr, prot,
|
||||
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, 0, 0 ) ) {
|
||||
err_exit(9);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (xi) { // 1st call (main); also have (0!=av) here
|
||||
if (ET_DYN!=ehdr->e_type) {
|
||||
// Needed only if compressed shell script invokes compressed shell.
|
||||
brk(v_brk);
|
||||
}
|
||||
}
|
||||
return ehdr->e_entry + reloc;
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************************
|
||||
// upx_main - called by our entry code
|
||||
**************************************************************************/
|
||||
|
||||
void *upx_main(
|
||||
struct l_info const *const li,
|
||||
size_t const sz_compressed, // total length
|
||||
Elf32_Ehdr *const ehdr, // temp char[sz_ehdr] for decompressing
|
||||
size_t const sz_ehdr,
|
||||
f_expand *const f_decompress,
|
||||
f_unfilter *const f_unf,
|
||||
Elf32_auxv_t *const av
|
||||
)
|
||||
{
|
||||
Elf32_Phdr const *phdr = (Elf32_Phdr const *)(1+ ehdr);
|
||||
Elf32_Addr entry;
|
||||
|
||||
Extent xi, xo, xi0;
|
||||
xi.buf = (char *)(1+ (struct p_info const *)(1+ li)); // &b_info
|
||||
xi.size = sz_compressed - (sizeof(struct l_info) + sizeof(struct p_info));
|
||||
xo.buf = (char *)ehdr;
|
||||
xo.size = ((struct b_info const *)xi.buf)->sz_unc;
|
||||
xi0 = xi;
|
||||
|
||||
// ehdr = Uncompress Ehdr and Phdrs
|
||||
unpackExtent(&xi, &xo, f_decompress, 0); // never filtered?
|
||||
|
||||
// AT_PHDR.a_un.a_val is set again by do_xmap if PT_PHDR is present.
|
||||
auxv_up(av, AT_PHDR , (unsigned)(1+(Elf32_Ehdr *)phdr->p_vaddr));
|
||||
auxv_up(av, AT_PHNUM , ehdr->e_phnum);
|
||||
auxv_up(av, AT_ENTRY , (unsigned)ehdr->e_entry);
|
||||
//auxv_up(av, AT_PHENT , ehdr->e_phentsize); /* this can never change */
|
||||
//auxv_up(av, AT_PAGESZ, PAGE_SIZE); /* ld-linux.so.2 does not need this */
|
||||
|
||||
entry = do_xmap(ehdr, &xi0, 0, av, f_decompress, f_unf);
|
||||
|
||||
{ // Map PT_INTERP program interpreter
|
||||
int j;
|
||||
for (j=0; j < ehdr->e_phnum; ++phdr, ++j) if (PT_INTERP==phdr->p_type) {
|
||||
char const *const iname = (char const *)phdr->p_vaddr;
|
||||
int const fdi = open(iname, O_RDONLY, 0);
|
||||
if (0 > fdi) {
|
||||
err_exit(18);
|
||||
}
|
||||
if (MAX_ELF_HDR!=read(fdi, (void *)ehdr, MAX_ELF_HDR)) {
|
||||
ERR_LAB
|
||||
err_exit(19);
|
||||
}
|
||||
entry = do_xmap(ehdr, 0, fdi, 0, 0, 0);
|
||||
close(fdi);
|
||||
}
|
||||
}
|
||||
|
||||
return (void *)entry;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
vi:ts=4:et:nowrap
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user