powerpc-darwin.dylib
This commit is contained in:
John Reiser
@@ -102,6 +102,7 @@ STUBS += mips.r3000-linux.elf-fold.h
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STUBS += mipsel.r3000-linux.elf-entry.h
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STUBS += mipsel.r3000-linux.elf-fold.h
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STUBS += mipsel.r3000-ps1.h
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STUBS += powerpc-darwin.dylib-entry.h
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STUBS += powerpc-darwin.macho-entry.h
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STUBS += powerpc-darwin.macho-fold.h
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STUBS += powerpc-linux.elf-entry.h
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@@ -1050,6 +1051,19 @@ tmp/powerpc-darwin.macho-main.o : $(srcdir)/src/$$T.c
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$(call tc,objdump) -dr $(tc_objdump_disasm_options) $@ | $(RTRIM) > $@.disasm
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# /***********************************************************************
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# // powerpc-darwin.dylib
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# ************************************************************************/
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# info: we use the tc settings from powerpc-linux.elf
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powerpc-darwin.dylib%.h : tc_list = powerpc-linux.elf default
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powerpc-darwin.dylib%.h : tc_bfdname = elf32-powerpc
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powerpc-darwin.dylib-entry.h : $(srcdir)/src/$$T.S
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$(call tc,gcc) -c $< -o tmp/$T.bin
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$(call tc,f-embed_objinfo,tmp/$T.bin)
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$(call tc,bin2h) tmp/$T.bin $@
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# /***********************************************************************
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# // powerpc-linux.elf
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# ************************************************************************/
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@@ -0,0 +1,185 @@
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/*
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* powerpc-darwin.dylib-entry.S -- program entry point & decompressor (PowerPC32 dylib)
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*
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* This file is part of the UPX executable compressor.
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*
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* Copyright (C) 2005-2009 John F. Reiser
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* All Rights Reserved.
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*
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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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*
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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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*
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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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*
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* John F. Reiser
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* <jreiser@users.sourceforge.net>
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*
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*/
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#include "arch/powerpc/32/macros.S"
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#include "arch/powerpc/32/ppc_regs.h"
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/*************************************************************************
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// We have been CALLed as a subroutine from dyld; C-language rules apply.
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// -4*4+_start: .long offset(user_init_function)
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// -3*4+_start: .long offset(b_info of compressed Mach_headers)
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// -2*4+_start: .long length(compressed __TEXT)
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// -1*4+_start: .long 8+ total_length # 8+ number of preceding bytes in file
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**************************************************************************/
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section MACOS000
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_start: .globl _start
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mflr r2
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call main # must be exactly 1 instruction; link_register= &decompress
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decompressor:
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section NRV_HEAD
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SZ_DLINE=128 # size of data cache line in Apple G5
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/* PowerPC has no 'cmplis': compare logical [unsigned] immediate shifted [by 16] */
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#define hibit r0 /* holds 0x80000000 during decompress */
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#define src a0
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#define lsrc a1
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#define dst a2
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#define ldst a3 /* Out: actually a reference: &len_dst */
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#define meth a4
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#define off a4
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#define len a5
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#define bits a6
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#define disp a7
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section NRV2E
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#include "arch/powerpc/32/nrv2e_d.S"
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section NRV2D
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#include "arch/powerpc/32/nrv2d_d.S"
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section NRV2B
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#include "arch/powerpc/32/nrv2b_d.S"
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#include "arch/powerpc/32/lzma_d.S"
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section NRV_TAIL
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eof_nrv:
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#define dst0 a4
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#define tmp a1
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lwz dst0,0(ldst) // original dst
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mtlr t3 // return address
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subf a0,lsrc,src
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subf tmp,dst0,dst // -1+ dst length
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addi a0,a0,1 // return 0: good; else: bad [+1: correct for lbzu]
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addi tmp,tmp,1 // dst length
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stw tmp,0(ldst)
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#undef tmp
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// CACHELINE=32 is the observed minimum line size of any cache.
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// Some caches may have larger lines, but it is cumbersome to lookup
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// {AT_DCACHEBSIZE, AT_ICACHEBSIZE, AT_UCACHEBSIZE: /usr/include/elf.h},
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// then save the correct size in a variable {where to put it?}, or to modify
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// the two instructions here. If a cache has larger lines, then we expect
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// that the second dcbst (or icbi) on a the same line will be fast.
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// If not, then too bad.
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section CFLUSH // In: a2=dst= &highest stored byte; a4=dst0= &lowest stored byte
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CACHELINE=32
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ori dst0,dst0,-1+ CACHELINE // highest addr on cache line
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cfl_nrv:
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dcbst 0,dst0 // initiate store (modified) cacheline to memory
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cmpl cr0,dst0,dst // did we cover the highest-addressed byte?
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icbi 0,dst0 // discard instructions from cacheline
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addi dst0,dst0,CACHELINE // highest addr on next line
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blt cr0,cfl_nrv // not done yet
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#undef dst0
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sync // wait for all memory operations to finish
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isync // discard prefetched instructions (if any)
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cfl_ret:
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ret
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section ELFMAINY
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// IDENTSTR goes here
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section ELFMAINZ
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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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b_method= 8
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PROT_NONE =0x00
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PROT_READ =0x01
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PROT_WRITE =0x02
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PROT_EXEC =0x04
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MAP_SHARED =0x1
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MAP_PRIVATE =0x2
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MAP_ANON =0x1000
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SYS_mmap =197
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SYS_mprotect= 74
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main2:
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teq r0,r0 // debugging
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stwu r2,-4*(1+ 32-a0)(sp) # retaddr
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stmw a0,4*1(sp)
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mflr r31 # r31= &decompressor
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lwz r29, -4*1(r31) # "call main" at _start
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lwz r30,-4*1+ _start - decompressor(r31) # 4+ offset(_start)
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rlwinm r29,r29,0,6,29 # 4+ main - decompressor
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add r30,r30,r29 # offset(main); ASSUMES (8+_start)==decompressor
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addi r29,r29,-4 # main - decompressor
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li a0,0 # addr
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mr a1,r30 # length
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li a2,PROT_READ|PROT_WRITE
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li a3,MAP_ANON|MAP_PRIVATE
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li a4,-1
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li a5,0 # hi32(offset)
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li a6,0 # lo32(offset)
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li 0,SYS_mmap
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sc
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li a0,-1 # failure
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teq r0,r0 // debugging
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li a2,main - movup2
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mtctr a2
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add a1,a0 ,r30 # lwa(dst); new_page + offset(main)
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add a0,r29,r31 # lwa(src); &main
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movup1: # descending copy [moveup2, main)
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lbzu r0,-1(a0)
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stbu r0,-1(a1)
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bdnz+ movup1
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subf a2,a2,r30 # offset(movup2)
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mtlr a1 # &copied movup2
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mtctr a2 # offset(movup2)
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blr # goto the copied code
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movup2: # descending copy [base, movup2)
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lbzu r0,-1(a0)
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stbu r0,-1(a1)
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bdnz+ movup2
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subf r31,a0,r31
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add r31,a1,r31 # relocated decompressor
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teq r0,r0
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main:
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b main2
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dy_top:
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len_top = dy_top - main
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/*
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vi:ts=8:et:nowrap
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*/
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@@ -0,0 +1,52 @@
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file format elf32-powerpc
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Sections:
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Idx Name Size VMA LMA File off Algn Flags
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0 MACOS000 00000008 00000000 00000000 00000034 2**0 CONTENTS, RELOC, READONLY
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1 NRV_HEAD 00000000 00000000 00000000 0000003c 2**0 CONTENTS, READONLY
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2 NRV2E 00000148 00000000 00000000 0000003c 2**0 CONTENTS, RELOC, READONLY
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3 NRV2D 0000012c 00000000 00000000 00000184 2**0 CONTENTS, RELOC, READONLY
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4 NRV2B 000000f0 00000000 00000000 000002b0 2**0 CONTENTS, RELOC, READONLY
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5 LZMA_ELF00 0000008c 00000000 00000000 000003a0 2**0 CONTENTS, RELOC, READONLY
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6 LZMA_DEC10 0000099c 00000000 00000000 0000042c 2**0 CONTENTS, READONLY
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7 LZMA_DEC20 0000099c 00000000 00000000 00000dc8 2**0 CONTENTS, READONLY
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8 LZMA_DEC30 00000020 00000000 00000000 00001764 2**0 CONTENTS, READONLY
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9 NRV_TAIL 0000001c 00000000 00000000 00001784 2**0 CONTENTS, READONLY
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10 CFLUSH 00000024 00000000 00000000 000017a0 2**0 CONTENTS, READONLY
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11 ELFMAINY 00000000 00000000 00000000 000017c4 2**0 CONTENTS, READONLY
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12 ELFMAINZ 00000098 00000000 00000000 000017c4 2**0 CONTENTS, READONLY
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SYMBOL TABLE:
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00000000 l d LZMA_DEC30 00000000 LZMA_DEC30
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00000000 l d NRV_TAIL 00000000 NRV_TAIL
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00000000 l d ELFMAINZ 00000000 ELFMAINZ
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00000000 l d MACOS000 00000000 MACOS000
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00000000 l d NRV_HEAD 00000000 NRV_HEAD
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00000000 l d NRV2E 00000000 NRV2E
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00000000 l d NRV2D 00000000 NRV2D
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00000000 l d NRV2B 00000000 NRV2B
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00000000 l d LZMA_ELF00 00000000 LZMA_ELF00
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00000000 l d LZMA_DEC10 00000000 LZMA_DEC10
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00000000 l d LZMA_DEC20 00000000 LZMA_DEC20
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00000000 l d CFLUSH 00000000 CFLUSH
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00000000 l d ELFMAINY 00000000 ELFMAINY
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00000000 g MACOS000 00000000 _start
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RELOCATION RECORDS FOR [MACOS000]:
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OFFSET TYPE VALUE
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00000004 R_PPC_REL24 ELFMAINZ+0x00000094
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RELOCATION RECORDS FOR [NRV2E]:
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OFFSET TYPE VALUE
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000000b4 R_PPC_REL14 NRV_TAIL
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RELOCATION RECORDS FOR [NRV2D]:
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OFFSET TYPE VALUE
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000000b4 R_PPC_REL14 NRV_TAIL
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RELOCATION RECORDS FOR [NRV2B]:
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OFFSET TYPE VALUE
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00000090 R_PPC_REL14 NRV_TAIL
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RELOCATION RECORDS FOR [LZMA_ELF00]:
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OFFSET TYPE VALUE
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00000004 R_PPC_REL14 LZMA_DEC30+0x00000020
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