libgcc for boot environment isn't always present and compatible.
libgcc is often absent if endianness or bit-size at boot is different
from running OS.
libgcc may use optimised opcodes that aren't available on boot time.
So instead of relying on libgcc shipped with the compiler, supply
the functions in GRUB directly.
Tests are present to ensure that those replacement functions behave the
way compiler expects them to.

	Do not explicitly check for symbol table as it's already checked in
	platform-independent layer.

	Move more code to common dl.c. Add missing veneers for arm and arm64.
	Decreases kernel size by 70 bytes on i386-pc (40-50 compressed)

	do essentially the same thing, do it in similar way.

	warnings.

	Reported by: Paulo Flabiano Smorigo.

	All users updated.

	of r0.

	on it.

	set but not used variable.

	* grub-core/kern/dl.c (grub_dl_load_segments) [__powerpc__]: Follow
	__ia64__ path.
	(grub_dl_load_segments): Set mod->sz.
	(grub_dl_flush_cache): Flush whole space occupied by module, not just
	segments.
	* grub-core/kern/ia64/dl.c (nopm): Make const while on it.
	(jump): Likewise.
	* grub-core/kern/powerpc/dl.c (grub_arch_dl_get_tramp_got_size): New
	function.
	(trampoline): New struct.
	(trampoline_template): New const.
	(grub_arch_dl_relocate_symbols): Create trampolines on overflow.
	* include/grub/dl.h (grub_dl): Add sz element.
	[__powerpc__]: Follow __ia64__.
	(GRUB_ARCH_DL_TRAMP_ALIGN): Define on ppc.
	(GRUB_ARCH_DL_GOT_ALIGN): Likewise.
	(GRUB_ARCH_DL_TRAMP_SIZE): Likewise.
	(grub_arch_dl_get_tramp_got_size) [__powerpc__]: New proto.

	some space.

	* grub-core/kern/emu/main.c (grub_prefix): Removed.
	* grub-core/kern/i386/coreboot/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/pc/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/qemu/startup.S (grub_prefix): Likewise.
	* grub-core/kern/ia64/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/mips/startup.S (grub_prefix): Likewise.
	* grub-core/kern/powerpc/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/sparc64/ieee1275/crt0.S (grub_prefix): Likewise.
	* grub-core/kern/x86_64/efi/startup.S (grub_prefix): Likewise.
	* include/grub/ia64/efi/kernel.h: Removed.
	* include/grub/kernel.h: New module type OBJ_TYPE_PREFIX.
	(grub_prefix): Removed.
	* include/grub/offsets.h (GRUB_KERNEL_I386_PC_PREFIX): Removed.
	(GRUB_KERNEL_I386_PC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX_END): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX_END): Likewise.
	* grub-core/kern/main.c (grub_set_prefix_and_root): Retrieve grub_prefix
	from module.
	* util/grub-mkimage.c (image_target_desc): Removed prefix and
	prefix_end.
	(image_targets): Likewise.
	(generate_image): Put prefix as a module.

	* grub-core/boot/i386/pc/lnxboot.S: Use
	GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE.
	* grub-core/kern/i386/pc/startup.S: Move grub_prefix to compressed part.
	* include/grub/offsets.h: Rename GRUB_MACHINE_DATA_END to
	GRUB_MACHINE_PREFIX_END. All users updated.
	(GRUB_KERNEL_I386_PC_PREFIX): Set to GRUB_KERNEL_I386_PC_RAW_SIZE.
	(GRUB_KERNEL_I386_PC_PREFIX_END): Set to GRUB_KERNEL_I386_PC_PREFIX
	+ 0x40.
	(GRUB_KERNEL_I386_PC_RAW_SIZE): Decrease.
	* util/grub-mkimage.c (image_target_desc): Change data_end to
	prefix_end. All users updated.