2008-07-24 Bean <bean123ch@gmail.com>

* 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. Don't test for
	start symbol in non pc platform.

	* 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.

conf/i386-pc-cygwin-img-ld.sc

@@ -0,0 +1,53 @@
+/* Linker script to create grub .img files on Cygwin.  */
+
+SECTIONS
+{
+  .text :
+  {
+    start = . ;
+    *(.text)
+    etext = . ;
+  }
+  .data :
+  {
+    __data_start__ = . ;
+    *(.data)
+    __data_end__ = . ;
+  }
+  .rdata :
+  {
+    __rdata_start__ = . ;
+    *(.rdata)
+    __rdata_end__ = . ;
+  }
+  .pdata :
+  {
+    *(.pdata)
+    edata = . ;
+  }
+  .bss :
+  {
+    __bss_start__ = . ;
+    *(.bss)
+    __common_start__ = . ;
+    *(COMMON)
+    __bss_end__ = . ;
+  }
+  .edata :
+  {
+    *(.edata)
+    end = . ;
+  }
+  .stab :
+  {
+    *(.stab)
+  }
+  .stabstr :
+  {
+    *(.stabstr)
+  }
+}
+
+ASSERT("__rdata_end__"=="edata", ".pdata not empty")
+ASSERT("__bss_end__"  =="end"  , ".edata not empty")
+