Re: [PATCH] New tool to convert pe image to elf

[Bean]

On Wed, Jul 23, 2008 at 1:54 PM, Bean <address@hidden> wrote:
> Hi,
>
> I change the structure of grub-pe2elf, now it uses sub function to do
> various task instead of one huge trunk.
>
> I also include the build script by Christian Franke, as it's needed to
> compile successfully in cygwin. I make some adjustment:
>
> 1, use grub-pe2elf to generate module file instead of objdump
> 2, remove the "_" patch for gensymlist.sh.in, it's not needed anymore
> as grub-pe2elf have removed the underscope, but the genkernsyms.sh.in
> patch is still needed.
>
> With this patch, grub2 works OOTB in cygwin.
>
> Changelog:
>
> 2008-07-23  Bean  <address@hidden>
>
>        * common.rmk (bin_UTILITIES): Add grub-pe2elf.
>        (grub_pe2elf_SOURCES): New macro.
>        (CLEANFILES): Add grub-pe2elf.
>
>        * include/grub/efi/pe32.h (GRUB_PE32_SCN_ALIGN_1BYTES): New constant.
>        (GRUB_PE32_SCN_ALIGN_2BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_4BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_8BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_16BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_32BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_64BYTES): Likewise.
>        (GRUB_PE32_SCN_ALIGN_SHIFT): Likewise.
>        (GRUB_PE32_SCN_ALIGN_MASK): Likewise.
>        (GRUB_PE32_SYM_CLASS_EXTERNAL): Likewise.
>        (GRUB_PE32_SYM_CLASS_STATIC): Likewise.
>        (GRUB_PE32_SYM_CLASS_FILE): Likewise.
>        (GRUB_PE32_DT_FUNCTION): Likewise.
>        (GRUB_PE32_REL_I386_DIR32): Likewise.
>        (GRUB_PE32_REL_I386_REL32): Likewise.
>        (grub_pe32_symbol): New structure.
>        (grub_pe32_reloc): Likewise.
>
>        * util/grub-pe2elf.c: New file.
>
>        * configure.ac: Set TARGET_OBJ2ELF if host os is cygwin.
>
>        * genmk.rb: Use TARGET_OBJ2ELF to convert native object format to elf.
>
>        The following patches are from Christian Franke.
>
>        * include/grub/dl.h: Remove .previous, gas supports this only
>        for ELF format.
>
>        * include/grub/symbol.h [__CYGWIN__] (#define FUNCTION/VARIABLE):
>        Remove .type, gas supports this only for ELF format.
>
>        * kern/dl.c (grub_dl_resolve_dependencies): Add check for trailing 
> nullbytes
>        in symbol table. This fixes an infinite loop if table is zero filled.
>
>        * Makefile.in: Add autoconf replacements TARGET_IMG_LDSCRIPT,
>        TARGET_IMG_LDFLAGS and EXEEXT.
>
>        * aclocal.m4 (grub_PROG_OBJCOPY_ABSOLUTE): Replace -Wl,-N by
>        TARGET_IMG_LDFLAGS_AC.
>        (grub_CHECK_STACK_ARG_PROBE): New function.
>
>        * conf/i386-pc.rmk: Replace -Wl,-N by TARGET_IMG_LDFLAGS.
>
>        * conf/i386-pc-cygwin-ld-img.sc: New linker script.
>
>        * configure.ac: Add check for linker script "conf/${target}-img-ld.c"
>        to set TARGET_IMG_LD* accordingly.
>        Add check for Cygwin to set TARGET_MOD_OBJCOPY accordingly.
>        Add call to grub_CHECK_STACK_ARG_PROBE.
>        Use TARGET_IMG_LDFLAGS to check start, bss_start, end symbols.
>
>        * genkernsyms.sh.in: Handle HAVE_ASM_USCORE case.
>
>        * genmk.rb: Add EXEEXT to CLEANFILES.

Hi,

I have fixed a few bugs in grub-pe2elf in this new patch,it should
work as expected now.

-- 
Bean

pe2elf_3.diff
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