Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 15 Jun 2015 19:17:50 +0200 | From | Borislav Petkov <> | Subject | Re: X86 GIT GCC 5 compilation warning |
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On Mon, Jun 15, 2015 at 01:30:11PM +0200, Michael Matz wrote: > This warning is in gas since 2009 (commit d85733c8). In this case > it only happens when the internal type to represent values is 32 > bit, which happens only when binutils is compiled for only non-64bit > architectures, _on_ a non-64bit architecture (e.g. when it's compiled > on i386 for i386).
Hmm, so I did start my oS13.2 i386 guest:
$ as --version GNU assembler (GNU Binutils; openSUSE 13.2) 2.24.0.20140403-6.1 Copyright 2013 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or later. This program has absolutely no warranty. This assembler was configured for a target of `i586-suse-linux'.
So this target is "i586-suse-linux" and you said "i386-unknown-linux-gnu". Could that be a difference?
$ gcc --version gcc (SUSE Linux) 4.8.3 20140627 [gcc-4_8-branch revision 212064] Copyright (C) 2013 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ file /usr/bin/as /usr/bin/as: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.0.0, BuildID[sha1]=92485c2176310e60e8c833b6a0a8d9f8b8e9aea2, stripped
$ make arch/x86/kernel/head_32.o CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h CHK include/generated/timeconst.h CHK include/generated/bounds.h CHK include/generated/asm-offsets.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h CC kernel/time/time.o AS arch/x86/kernel/head_32.o CHK kernel/config_data.h LD kernel/time/built-in.o LD kernel/built-in.o
No warnings.
If I do a separate .s test dummy, it doesn't bitch either:
$ cat t.s .text LOWMEM_PAGES = (((1<<32) - 0xc0000000) >> 12)
mov LOWMEM_PAGES, %eax
$ as t.s $
Do we have some bleeding edge gcc5 rpms somewhere I could try?
Thanks Micha.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply. --
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