Why vmlinux.bin are changed from raw image to elf for x86 ?

[Jacky]

And I just double check, the transition happened from 2.6.25 to 2.6.26:

This is makefile fragment of 2.6.25:

linux-2.6.25/arch/x86/boot/compressed/Makefile
OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
$(obj)/vmlinux.bin: vmlinux FORCE
    $(call if_changed,objcopy)

while the following is makefile fragment of 2.6.26:

linux-2.6.26/arch/x86/boot/compressed/Makefile:
OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
$(obj)/vmlinux.bin: vmlinux FORCE
    $(call if_changed,objcopy)

The "-O binary" is removed. And I don't find any changelog.

Jacky

At 2013-03-02 15:54:33,Jacky <jackyclivia at 163.com> wrote:

 Hi All,

Recently, I found that x86 vmlinux.bin are changed from raw image to elf, we can got it from the following objcopy flags:

linux-3.7.x/arch/x86/boot/compressed/Makefile：
OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
$(obj)/vmlinux.bin: vmlinux FORCE
    $(call if_changed,objcopy)

we can see that kbuild pass no "-O binary" to objcopy.

And I double check the vmlinux.bin as following:

linux-3.7.x/arch/x86/boot/compressed$ file vmlinux.bin
vmlinux.bin: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, BuildID[sha1]=0x7ad967473a9b36bc529551eecd326b5dfd15a426, stripped

Make sure the vmlinux.bin is elf, not raw binary. Anyone knows the rootcause ?

Thanks,
Jacky







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