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committer: mfx <mfx> 1089731601 +0000
This commit is contained in:
Markus F.X.J. Oberhumer
2004-07-13 15:13:21 +00:00
parent b4b603819d
commit 4102cd7c91
2 changed files with 46 additions and 46 deletions
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src/p_vmlinx.cpp
+41 -41
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@@ -367,7 +367,7 @@ void PackVmlinuxI386::unpack(OutputFile *fo)
fo->write(obuf, ph.u_len);
obuf.dealloc();
ibuf.dealloc();
ph = ph_tmp;
fi->seek(p_text->sh_offset, SEEK_SET);
fi->readx(&call, 5);
@@ -412,39 +412,39 @@ void PackVmlinuxI386::unpack(OutputFile *fo)
//# create a compressed vmlinux image from the original vmlinux
//#
//
//targets := vmlinux upx-head.o upx-piggy.o
//targets := vmlinux upx-head.o upx-piggy.o
//
//LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32
//
//$(obj)/vmlinux: $(obj)/upx-head.o $(obj)/upx-piggy.o FORCE
// $(call if_changed,ld)
// @:
// $(call if_changed,ld)
// @:
//
//$(obj)/upx-piggy.o: vmlinux FORCE
// rm -f $(obj)/upx-piggy.o
// upx -o $(obj)/upx-piggy.o $<
// rm -f $(obj)/upx-piggy.o
// upx -o $(obj)/upx-piggy.o $<
//-----
//
//----- arch/i386/boot/compressed/upx-head.S
//#include <asm/segment.h>
//
// .text
// .text
//startup_32: .globl startup_32 # In: %esi=0x90000 setup data "real_mode pointer"
// cli # but if it matters, then there is a race!
// cli # but if it matters, then there is a race!
//
// movl $ __BOOT_DS,%eax
// movl %eax,%ss; movl $0x99000,%esp # 2.6.7 setup had ss:sp of 9000:8ffe
// /* Avoid EBDA (Extended BIOS Data Area) below 0xA0000. */
// movl $ __BOOT_DS,%eax
// movl %eax,%ss; movl $0x99000,%esp # 2.6.7 setup had ss:sp of 9000:8ffe
// /* Avoid EBDA (Extended BIOS Data Area) below 0xA0000. */
//
// pushl $0; popf # subsumes "cli; cld"; also clears NT for buggy BIOS
// pushl $0; popf # subsumes "cli; cld"; also clears NT for buggy BIOS
//
// movl %eax,%ds # all non-code segments identical
// movl %eax,%es
// movl %eax,%fs
// movl %eax,%gs
// movl %eax,%ds # all non-code segments identical
// movl %eax,%es
// movl %eax,%fs
// movl %eax,%gs
//
// movl $ 0x100000,%eax # destination of uncompression (and entry point)
// pushl $ __BOOT_CS
// movl $ 0x100000,%eax # destination of uncompression (and entry point)
// pushl $ __BOOT_CS
///* Fall into .text of upx-compressed vmlinux. */
//-----
@@ -458,32 +458,32 @@ void PackVmlinuxI386::unpack(OutputFile *fo)
//#include <asm/unistd.h>
//
//dump:
// movl $0x456789,%edx # length MODIFY THIS VALUE TO SUIT YOUR CASE
// movl $0x100000,%ecx # base
// movl $1,%ebx # stdout
// movl $ __NR_write,%eax
// int $0x80
// nop
// hlt
// movl $0x456789,%edx # length MODIFY THIS VALUE TO SUIT YOUR CASE
// movl $0x100000,%ecx # base
// movl $1,%ebx # stdout
// movl $ __NR_write,%eax
// int $0x80
// nop
// hlt
//mmap:
// pushl %ebx
// leal 2*4(%esp),%ebx
// pushl $ __NR_mmap; popl %eax
// int $0x80
// popl %ebx
// ret $6*4
// pushl %ebx
// leal 2*4(%esp),%ebx
// pushl $ __NR_mmap; popl %eax
// int $0x80
// popl %ebx
// ret $6*4
//
//_start: .globl _start
// nop
// int3 # enter debugger!
// pushl $0
// pushl $0
// pushl $ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED
// pushl $ PROT_EXEC | PROT_WRITE | PROT_READ
// pushl $0x600000 # 6MB
// pushl $0x100000 # 1MB
// call mmap
// push %cs
// nop
// int3 # enter debugger!
// pushl $0
// pushl $0
// pushl $ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED
// pushl $ PROT_EXEC | PROT_WRITE | PROT_READ
// pushl $0x600000 # 6MB
// pushl $0x100000 # 1MB
// call mmap
// push %cs
///* Fall into .text of upx-compressed vmlinux. */
//-----