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https://github.com/upx/upx
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Remove Makefile fragment from p_vmlinx.cpp.
This commit is contained in:
Markus F.X.J. Oberhumer
parent
c97765de14
commit
272fe5488c
220
src/p_vmlinx.cpp
220
src/p_vmlinx.cpp
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@ -1282,226 +1282,6 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
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return true;
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}
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//
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// Example usage within build system of Linux kernel-2.6.18:
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//
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//----- arch/i386/boot/compressed/Makefile
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//#
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//# linux/arch/i386/boot/compressed/Makefile
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//#
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//# create a compressed vmlinux image from the original vmlinux
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//#
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//
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//targets := vmlinux upx-piggy.o
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//
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//LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32
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//
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//$(obj)/vmlinux: $(obj)/upx-piggy.o FORCE
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// $(call if_changed,ld)
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// @:
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//
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//$(obj)/upx-piggy.o: vmlinux FORCE
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// upx --lzma -f -o $@ $<; touch $@
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//
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//#
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//# The ORIGINAL build sequence using gzip is:
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//# vmlinux Elf executable at top level in tree
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//# (in same directory as MAINTAINERS)
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//# In arch/i386:
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//# boot/compressed/vmlinux.bin by objcopy -O binary
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//# boot/compressed/vmlinux.bin.gz by gzip
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//# boot/compressed/piggy.o by ld --format binary --oformat elf32-i386
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//#
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//# The 3 steps above create a linkable
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//# compressed blob.
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//# In arch/i386:
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//# boot/compressed/vmlinux by ld head.o misc.o piggy.o
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//# boot/vmlinux.bin by objcopy
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//# boot/bzImage by arch/i386/boot/tools/build with
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//# bootsect and setup
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//#
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//#
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//# The MODIFIED build sequence using upx is:
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//# vmlinux Elf executable at top level in tree
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//# (in same directory as MAINTAINERS)
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//# In arch/i386:
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//# boot/compressed/upx-piggy.o by upx format vmlinux/386
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//#
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//# In arch/i386/boot:
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//# boot/compressed/vmlinux by ld upx-piggy.o
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//# boot/vmlinux.bin by objcopy
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//# boot/bzImage by arch/i386/boot/tools/build with
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//# bootsect and setup
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//#
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//-----
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#if 0 /*{*/
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// For Debian nslu2-linux (2.6.19), only this Makefile changes:
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--- ./debian/build/build-arm-none-ixp4xx/arch/arm/boot/compressed/Makefile.orig 2006-11-29 13:57:37.000000000 -0800
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+++ ./debian/build/build-arm-none-ixp4xx/arch/arm/boot/compressed/Makefile 2006-12-16 02:39:38.000000000 -0800
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@@ -5,7 +5,7 @@
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#
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HEAD = head.o
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-OBJS = misc.o
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+OBJS =
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FONTC = drivers/video/console/font_acorn_8x8.c
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FONT = $(addprefix ../../../../drivers/video/console/, font_acorn_8x8.o)
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@@ -73,8 +73,8 @@
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SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
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-targets := vmlinux vmlinux.lds piggy.gz piggy.o $(FONT) \
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- head.o misc.o $(OBJS)
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+targets := vmlinux vmlinux.lds upx-piggy.o $(FONT) \
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+ head.o $(OBJS)
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EXTRA_CFLAGS := -fpic
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EXTRA_AFLAGS :=
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@@ -95,20 +95,16 @@
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# would otherwise mess up our GOT table
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CFLAGS_misc.o := -Dstatic=
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-$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \
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- $(addprefix $(obj)/, $(OBJS)) FORCE
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+$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) \
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+ $(addprefix $(obj)/, $(OBJS)) $(obj)/upx-piggy.o FORCE
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$(call if_changed,ld)
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@:
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-$(obj)/piggy.gz: $(obj)/../Image FORCE
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- $(call if_changed,gzip)
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-
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-$(obj)/piggy.o: $(obj)/piggy.gz FORCE
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+$(obj)/upx-piggy.o: vmlinux FORCE
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+ upx --lzma -f -o $@ $<; touch $@
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CFLAGS_font_acorn_8x8.o := -Dstatic=
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$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile .config
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@sed "$(SEDFLAGS)" < $< > $@
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-$(obj)/misc.o: $(obj)/misc.c include/asm/arch/uncompress.h lib/inflate.c
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-
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#endif /*}*/
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// Approximate translation for Linux 2.4.x:
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// - - -
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// arch/i386/Makefile: LD_FLAGS=-e startup_32
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//----- arch/i386/boot/compressed/Makefile
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//# linux/arch/i386/boot/compressed/Makefile
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//#
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//# create a compressed vmlinux image from the original vmlinux
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//#
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//
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//HEAD =
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//SYSTEM = $(TOPDIR)/vmlinux
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//
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//OBJECTS = $(HEAD)
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//
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//ZLDFLAGS = -e startup_32
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//
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//#
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//# ZIMAGE_OFFSET is the load offset of the compression loader
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//# BZIMAGE_OFFSET is the load offset of the high loaded compression loader
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//#
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//ZIMAGE_OFFSET = 0x1000
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//BZIMAGE_OFFSET = 0x100000
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//
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//ZLINKFLAGS = -Ttext $(ZIMAGE_OFFSET) $(ZLDFLAGS)
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//BZLINKFLAGS = -Ttext $(BZIMAGE_OFFSET) $(ZLDFLAGS)
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//
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//all: vmlinux
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//
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//vmlinux: upx-piggy.o $(OBJECTS)
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// $(LD) $(ZLINKFLAGS) -o vmlinux $(OBJECTS) upx-piggy.o
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//
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//bvmlinux: upx-piggy.o $(OBJECTS)
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// $(LD) $(BZLINKFLAGS) -o bvmlinux $(OBJECTS) upx-piggy.o
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//
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//upx-piggy.o: $(SYSTEM)
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// $(RM) -f $@
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// upx --best -o $@ $<
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// touch $@
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//
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//clean:
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// rm -f vmlinux bvmlinux _tmp_*
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//-----
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//
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// Example test jig:
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// $ gcc -m32 -o test-piggy -nostartfiles -nostdlib test-piggy.o piggy.o
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// $ gdb test-piggy
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// (gdb) run >dumped
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// (gdb) /* Execute [single step, etc.; the decompressor+unfilter moves!]
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// * until reaching the 'lret' at the end of unfilter.
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// */
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// (gdb) set $pc= &dump
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// (gdb) stepi
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// (gdb) set $edx=<actual_uncompressed_length>
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// (gdb) continue
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// (gdb) q
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// $ # Compare file 'dumped' with the portion of vmlinux that made piggy.o.
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// $ dd if=vmlinux bs=<leader_size> skip=1 | cmp - dumped
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// cmp: EOF on dumped
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// $
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//----- test-piggy.S
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//#include <asm/mman.h>
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//#include <asm/unistd.h>
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//
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//dump:
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// movl $0x456789,%edx # length MODIFY THIS VALUE TO SUIT YOUR CASE
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// movl $0x100000,%ecx # base
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// movl $1,%ebx # stdout
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// movl $ __NR_write,%eax
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// int $0x80
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// nop
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// hlt
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//mmap:
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// pushl %ebx
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// leal 2*4(%esp),%ebx
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// pushl $ __NR_mmap; popl %eax
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// int $0x80
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// popl %ebx
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// ret $6*4
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//
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//_start: .globl _start
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// nop
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// int3 # enter debugger!
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// pushl $0
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// pushl $0
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// pushl $ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED
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// pushl $ PROT_EXEC | PROT_WRITE | PROT_READ
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// pushl $0x600000 # 6 MiB length
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// pushl $0x100000 # 1 MiB address
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// call mmap
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// leal -0x9000(%esp),%esi # expect "lea 0x9000(%esi),%esp" later
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///* Fall into .text of upx-compressed vmlinux. */
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//-----
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// Example test jig for ARM:
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//-----main.c
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//unsigned work[(1<<16)/sizeof(unsigned)];
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//unsigned kernel[(3<<20)/sizeof(unsigned)];
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//
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///* In order to avoid complaints such as
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// /usr/bin/ld: ERROR: libgcc_s.so uses hardware FP, whereas main uses software FP
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// when building this test program, then you must change the .e_flags
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// in the header of the compressed, relocatble output from upx, from
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// Flags: 0x202, has entry point, GNU EABI, software FP
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// to
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// Flags: 0x0
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//*/
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//
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//main()
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//{
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// char *const end = decompress_kernel(kernel, work, (1<<(16-2))+work, 0x1234);
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// write(1, kernel, (char *)end - (char *)kernel);
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// return 0;
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//}
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//-----
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/*************************************************************************
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//
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