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

[Bean]

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.

-- 
Bean

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