>>>>> "thiemo" == Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de> writes: thiemo> Juan Quintela wrote: >> >>>>> "thiemo" == Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de> writes: >> thiemo> Juan Quintela wrote: >> >> >> >> Hi >> >> this small patch made possible to compile a 64bit kernel for >> >> people that have old proms that only accept ecoff. As usual >> >> stolen from the 32 bits version. >> >> >> >> The easiest way is creating the file in arch/mips/boot, >> >> otherwise we need to copy elf2ecoff.c to mips64. >> thiemo> Sorry, but I plainly doubt you have tested this. >> thiemo> I tried such a method today, and elf2ecoff failed to work on ELF64 files. thiemo> Maybe a recent enough objcopy is the better choice for this purpose. >> >> I tested it and it works :) thiemo> How is this possible, given that elf2ecoff uses Elf32_* variables to thiemo> process the ELF file? elf2ecoff might be bad enough at error checking thiemo> to produce some binary garbage. >> Notice that I am using egcs for MIPS64 as I am not able to compile the >> kernel with gcc-3.2 :( thiemo> I don't think this is compiler dependent. :-) from arch/mips64/Makefile: # # Some machines like the Indy need 32-bit ELF binaries for booting purposes. # Other need ECOFF, so we build a 32-bit ELF binary for them which we then # convert to ECOFF using elf2ecoff. # ifdef CONFIG_BOOT_ELF32 GCCFLAGS += -Wa,-32 $(shell if $(CC) -Wa,-mgp64 -c -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "-Wa,-mgp64"; fi) LINKFLAGS += -T arch/mips64/ld.script.elf32 endif -- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy
