On Wed, Mar 18, 2009 at 2:08 PM, Kevin O'Connor <[email protected]> wrote:
> The bug is in src/arch/i386/boot/boot.c. The inline assembly in > jmp_to_elf_entry uses the "g" flag to pass in parameters. However, > "g" allows gcc to use stack relative addressing of parameters. > Unfortunately, the inline assembly modifies %esp - and thus the stack > relative values become incorrect. > > As a guess, without -fomit-frame-pointer, gcc would pass use %ebp > relative values and this wouldn't trigger - but regardless it is still > a bug. That's a mighty nice catch. This code has worked unchanged for a long time -- it's amazing how something can just break on you like this. Thanks ron -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
