http://sourceware.org/bugzilla/show_bug.cgi?id=12327
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-17 00:08:43 UTC --- Another testcase from: http://sourceware.org/ml/binutils/2010-12/msg00519.html -- > Your patch doesn't work. I got > > ./ld: kernel image bigger than KERNEL_IMAGE_SIZE > > due to arch/x86/kernel/vmlinux.lds: > > ---- > /* > * Build-time check on the image size: > */ > . = ASSERT((_end - _text <= (512 * 1024 * 1024)), > "kernel image bigger than KERNEL_IMAGE_SIZE"); Extracting the relevant parts from the kernel link script: SECTIONS { . = 0xc000; .text : { _text = .; *(.text) } _end = .; } ASSERT (_end - _text <= 0x100, "fail"); You'd think that under the new rules, this ought to work. "_end" is an absolute address, so when evaluating "_end - _text", "_text" ought to be converted from relative to absolute, the subtraction resuling in an absolute address. Then 0x100 gets converted from a number to absolute address before being compared. The trouble is that "_end" is *not* treated as an absolute address but as a plain number. That makes ld convert "_end" to a .text relative address when evaluation "_end - _text", which doesn't cause a problem at that stage, but the result is a relative address. That means 0x100 is converted to a .text relative address too, which gives the wrong result. The underlying problem is that we don't distinguish between plain numbers and absolute addresses once values are stored in symbols. -- -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-binutils
