mirror/upx
1
0
Fork 0
mirror of https://github.com/upx/upx synced 2025-09-28 19:06:07 +08:00
Code Issues Releases Wiki Activity

PackVmlinuxBase my_boot_label; kernel Makefiles

Browse Source
This commit is contained in:
John Reiser 2006-12-25 13:55:28 -08:00
parent 3a6c574376
commit 11b92172fe
2 changed files with 19 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
src/p_vmlinx.cpp
View File

@ -52,9 +52,11 @@ static const
template <class T>
PackVmlinuxBase<T>::PackVmlinuxBase(InputFile *f,
unsigned e_machine, unsigned elfclass, unsigned elfdata) :
unsigned e_machine, unsigned elfclass, unsigned elfdata,
char const *const boot_label) :
super(f),
my_e_machine(e_machine), my_elfclass(elfclass), my_elfdata(elfdata),
my_boot_label(boot_label),
n_ptload(0), phdri(NULL), shdri(NULL), shstrtab(NULL)
{
ElfClass::compileTimeAssertions();
@ -370,16 +372,16 @@ void PackVmlinuxBase<T>::pack(OutputFile *fo)
unc_ker.st_shndx = 1; // .text
fo->write(&unc_ker, sizeof(unc_ker)); fo_off += sizeof(unc_ker);
// '\0' before and after the name we want
char const strtab[] = "\0decompress_kernel";
unsigned const lablen = strlen(my_boot_label);
while (0!=*p++) ;
shdro[6].sh_name = ptr_diff(p, shstrtab);
shdro[6].sh_type = Shdr::SHT_STRTAB;
shdro[6].sh_offset = fo_off;
shdro[6].sh_size = sizeof(strtab); // includes both '\0'
shdro[6].sh_size = 2+ lablen; // '\0' before and after
shdro[6].sh_addralign = 1;
fo->write(strtab, sizeof(strtab)); fo_off += sizeof(strtab);
fo->seek(1, SEEK_CUR); // the '\0' before
fo->write(my_boot_label, 1+ lablen); // include the '\0' terminator
fo_off += 2+ lablen;
fo->seek(0, SEEK_SET);
fo->write(&ehdro, sizeof(ehdro));
@ -738,18 +740,16 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
//# create a compressed vmlinux image from the original vmlinux
//#
//
//targets := vmlinux upx-head.o upx-piggy.o
//targets := vmlinux upx-piggy.o
//
//LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32
//
//$(obj)/vmlinux: $(obj)/upx-head.o $(obj)/upx-piggy.o FORCE
//$(obj)/vmlinux: $(obj)/upx-piggy.o FORCE
// $(call if_changed,ld)
// @:
//
//$(obj)/upx-piggy.o: vmlinux FORCE
// rm -f $@
// upx --best -o $@ $<
// touch $@
// upx --lzma -f -o $@ $<; touch $@
//
//#
//# The ORIGINAL build sequence using gzip is:
@ -776,17 +776,12 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
//# boot/compressed/upx-piggy.o by upx format vmlinux/386
//#
//# In arch/i386/boot:
//# boot/compressed/vmlinux by ld upx-head.o upx-piggy.o
//# boot/compressed/vmlinux by ld upx-piggy.o
//# boot/vmlinux.bin by objcopy
//# boot/bzImage by arch/i386/boot/tools/build with
//# bootsect and setup
//#
//-----
//
//----- arch/i386/boot/compressed/upx-head.S
//startup_32: .globl startup_32 # In: %esi=0x90000 setup data "real_mode pointer"
// /* All code is in stub/src/i386-linux.kernel.vmlinux-head.S */
//-----
#if 0 /*{*/
// For Debian nslu2-linux (2.6.19), only this Makefile changes:
@ -828,7 +823,7 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
-
-$(obj)/piggy.o: $(obj)/piggy.gz FORCE
+$(obj)/upx-piggy.o: vmlinux FORCE
+ rm -f $@; upx --lzma -o $@ $<; touch $@
+ upx --lzma -f -o $@ $<; touch $@
CFLAGS_font_acorn_8x8.o := -Dstatic=
@ -848,7 +843,7 @@ bool PackVmlinuxAMD64::has_valid_vmlinux_head()
//# create a compressed vmlinux image from the original vmlinux
//#
//
//HEAD = upx-head.o
//HEAD =
//SYSTEM = $(TOPDIR)/vmlinux
//
//OBJECTS = $(HEAD)

9
src/p_vmlinx.h
View File

@ -57,7 +57,7 @@ protected:
typedef typename ElfClass::Sym Sym;
public:
PackVmlinuxBase(InputFile *, unsigned, unsigned, unsigned);
PackVmlinuxBase(InputFile *, unsigned, unsigned, unsigned, char const *);
virtual ~PackVmlinuxBase();
virtual int getVersion() const { return 13; }
@ -65,6 +65,7 @@ protected:
unsigned int const my_e_machine;
unsigned char const my_elfclass;
unsigned char const my_elfdata;
char const *const my_boot_label;
int n_ptload;
unsigned sz_ptload;
@ -97,7 +98,7 @@ class PackVmlinuxI386 : public PackVmlinuxBase<ElfClass_LE32>
typedef PackVmlinuxBase<ElfClass_LE32> super;
public:
PackVmlinuxI386(InputFile *f) : super(f, Ehdr::EM_386,
Ehdr::ELFCLASS32, Ehdr::ELFDATA2LSB) { }
Ehdr::ELFCLASS32, Ehdr::ELFDATA2LSB, "startup_32") { }
virtual int getFormat() const { return UPX_F_VMLINUX_i386; }
virtual const char *getName() const { return "vmlinux/386"; }
virtual const char *getFullName(const options_t *) const { return "i386-linux.kernel.vmlinux"; }
@ -121,7 +122,7 @@ class PackVmlinuxARM : public PackVmlinuxBase<ElfClass_LE32>
typedef PackVmlinuxBase<ElfClass_LE32> super;
public:
PackVmlinuxARM(InputFile *f) : super(f, Ehdr::EM_ARM,
Ehdr::ELFCLASS32, Ehdr::ELFDATA2LSB) { }
Ehdr::ELFCLASS32, Ehdr::ELFDATA2LSB, "decompress_kernel") { }
virtual int getFormat() const { return UPX_F_VMLINUX_ARM; }
virtual const char *getName() const { return "vmlinux/ARM"; }
virtual const char *getFullName(const options_t *) const { return "ARM-linux.kernel.vmlinux"; }
@ -146,7 +147,7 @@ class PackVmlinuxAMD64 : public PackVmlinuxBase<ElfClass_LE64>
typedef PackVmlinuxBase<ElfClass_LE64> super;
public:
PackVmlinuxAMD64(InputFile *f) : super(f, Ehdr::EM_X86_64,
Ehdr::ELFCLASS64, Ehdr::ELFDATA2LSB) { }
Ehdr::ELFCLASS64, Ehdr::ELFDATA2LSB, "startup_32") { }
virtual int getFormat() const { return UPX_F_VMLINUX_AMD64; }
virtual const char *getName() const { return "vmlinux/AMD64"; }
virtual const char *getFullName(const options_t *) const { return "amd64-linux.kernel.vmlinux"; }