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okuji
b225b42f05
Define the behavior of the boot loader when the load end address and the bss end address are zero in the Multiboot Specification, and add the support into GRUB. I've modified a patch from Yuri Zaporogets <yuriz@ukr.net>. * stage2/boot.c (load_image): In the case of Multiboot a.out kludge, set the load end address to the load address plus the size of the OS image file, if it is zero. Similarly, set the bss end address to the load end address, if it is zero. * util/mbchk.c (check_multiboot): Don't check if the load address is greater than or equal to the load end address, if the load end address is zero. Don't check if the load end address is greater than the bss end address, if the bss end address is zero. And, don't check if the load end address is less than or equal to the entry address, if the load end address is zero. * docs/multiboot.texi (The address fields of Multiboot header): Added descriptions about the behavior of the boot loader when LOAD_END_ADDR is zero and BSS_END_ADDR is zero.