Re: [PATCH][TRIVIAL] Remove bogus "value 0x37ffffff truncated to 0x37ffffff" warning.

[Martin Schlemmer <azarah@nosferatu.za.org>]

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On Sun, 2004-01-11 at 19:53, Davide Libenzi wrote:
> On Sun, 11 Jan 2004, Martin Schlemmer wrote:
> 
> > On Sun, 2004-01-11 at 18:53, Davide Libenzi wrote:
> > > On Sun, 11 Jan 2004, Bart Samwel wrote:
> > > 
> > > > Now it seems to behave correctly: for '~' it always warns, for '-' it 
> > > > only warns if the negative value is below -0x80000000. I'll submit a 
> > > > patch to this effect (including the format extensions) to the binutils 
> > > > people.
> > > 
> > > binutils 2.14 works fine, so I believe they already fixed it.
> > > 
> > 
> > I would beg to differ:
> > 
> > --
> > nosferatu linux # make
> > make[1]: `arch/i386/kernel/asm-offsets.s' is up to date.
> >   CHK     include/asm-i386/asm_offsets.h
> >   CHK     include/linux/compile.h
> >   AS      arch/i386/boot/setup.o
> > arch/i386/boot/setup.S: Assembler messages:
> > arch/i386/boot/setup.S:165: Warning: value 0x37ffffff truncated to 0x37ffffff
> >   LD      arch/i386/boot/setup
> >   BUILD   arch/i386/boot/bzImage
> > Root device is (8, 3)
> > Boot sector 512 bytes.
> > Setup is 4799 bytes.
> > System is 1366 kB
> > Kernel: arch/i386/boot/bzImage is ready
> >   Building modules, stage 2.
> >   MODPOST
> > nosferatu linux # ld --version
> > GNU ld version 2.14.90.0.7 20031029
> > Copyright 2002 Free Software Foundation, Inc.
> > This program is free software; you may redistribute it under the terms of
> > the GNU General Public License.  This program has absolutely no warranty.
> > nosferatu linux #
> 
> Ouch ! I have:
> 
> GNU assembler 2.14 20030612
> 
> and it works fine. Can you try:
> 
> $ as << EOF
> 
> 	PG=0xC0000000
> 	VM=(128 << 20)
> 
> 	.long (-PG -VM)
> 	.long (~PG + 1 - VM)
> EOF
> 
> $ objdump -D a.out
> 
> 

--
azarah@nosferatu tar $ as << EOF > PG=0xC0000000
> VM=(128 << 20)
> .long (-PG -VM)
> .long (~PG + 1 - VM)
> EOF
{standard input}: Assembler messages:
{standard input}:3: Warning: value 0x38000000 truncated to 0x38000000
{standard input}:4: Warning: value 0x38000000 truncated to 0x38000000
azarah@nosferatu tar $ objdump -D a.out
 
a.out:     file format elf32-i386
 
Disassembly of section .text:
 
00000000 <.text>:
   0:   00 00                   add    %al,(%eax)
   2:   00 38                   add    %bh,(%eax)
   4:   00 00                   add    %al,(%eax)
   6:   00 38                   add    %bh,(%eax)
azarah@nosferatu tar $
--



-- 
Martin Schlemmer

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