[Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Chen Gang]

Hello Maintainers:

When I build sh64 with allmodconfig (without "EXTRA_CFLAGS=-W"), it
report the warnings below:

    LD      arch/sh/kernel/cpu/sh5/built-in.o
  WARNING: arch/sh/kernel/cpu/sh5/built-in.o (.cranges): unexpected non-allocatable section.
  Did you forget to use "ax"/"aw" in a .S file?
  Note that for example <linux/init.h> contains
  section definitions for use in .S files.

Can it cause real world issue ?

Welcome any members suggestions or completions.


Thanks.
--
Chen Gang.

Re: [Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Chen Gang]

For sh, it will report error below:

  [root@dhcp122 linux-next]# make ARCH=sh CROSS_COMPILE=sh-linux-gnu-
  CC      scripts/mod/empty.o
  as: unrecognized option '-little'
  make[2]: *** [scripts/mod/empty.o] Error 2
  make[1]: *** [scripts/mod] Error 2
  make: *** [scripts] Error 2

The related binutils information:

  [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-ld
  binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
  [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-as
  binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64


Is it the binutils's issue ? is the warnings below is the binutils's
issue too? (now, I am downloading related tool chain source code of SH,
and will try again).


Thanks.

On 07/30/2013 10:15 AM, Chen Gang wrote:
> Hello Maintainers:
> 
> When I build sh64 with allmodconfig (without "EXTRA_CFLAGS=-W"), it
> report the warnings below:
> 
>     LD      arch/sh/kernel/cpu/sh5/built-in.o
>   WARNING: arch/sh/kernel/cpu/sh5/built-in.o (.cranges): unexpected non-allocatable section.
>   Did you forget to use "ax"/"aw" in a .S file?
>   Note that for example <linux/init.h> contains
>   section definitions for use in .S files.
> 
> Can it cause real world issue ?
> 
> Welcome any members suggestions or completions.
> 
> 
> Thanks.
> --
> Chen Gang.
> 


-- 
Chen Gang

Re: [Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Chen Gang]

On 07/30/2013 02:09 PM, Chen Gang wrote:
> 
> For sh, it will report error below:
> 
>   [root@dhcp122 linux-next]# make ARCH=sh CROSS_COMPILE=sh-linux-gnu-
>   CC      scripts/mod/empty.o
>   as: unrecognized option '-little'
>   make[2]: *** [scripts/mod/empty.o] Error 2
>   make[1]: *** [scripts/mod] Error 2
>   make: *** [scripts] Error 2
> 
> The related binutils information:
> 
>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-ld
>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-as
>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
> 

OH, sorry, for sh64, the related information is

  [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh64-linux-gnu-as 
  binutils-sh64-linux-gnu-2.23.51.0.3-1.fc17.x86_64


> 
> Is it the binutils's issue ? is the warnings below is the binutils's
> issue too? (now, I am downloading related tool chain source code of SH,
> and will try again).
> 
> 
> Thanks.
> 
> On 07/30/2013 10:15 AM, Chen Gang wrote:
>> Hello Maintainers:
>>
>> When I build sh64 with allmodconfig (without "EXTRA_CFLAGS=-W"), it
>> report the warnings below:
>>
>>     LD      arch/sh/kernel/cpu/sh5/built-in.o
>>   WARNING: arch/sh/kernel/cpu/sh5/built-in.o (.cranges): unexpected non-allocatable section.
>>   Did you forget to use "ax"/"aw" in a .S file?
>>   Note that for example <linux/init.h> contains
>>   section definitions for use in .S files.
>>
>> Can it cause real world issue ?
>>
>> Welcome any members suggestions or completions.
>>
>>
>> Thanks.
>> --
>> Chen Gang.
>>
> 
> 


-- 
Chen Gang

Re: [Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Chen Gang]

On 07/30/2013 02:11 PM, Chen Gang wrote:
> On 07/30/2013 02:09 PM, Chen Gang wrote:
>>
>> For sh, it will report error below:
>>
>>   [root@dhcp122 linux-next]# make ARCH=sh CROSS_COMPILE=sh-linux-gnu-
>>   CC      scripts/mod/empty.o
>>   as: unrecognized option '-little'
>>   make[2]: *** [scripts/mod/empty.o] Error 2
>>   make[1]: *** [scripts/mod] Error 2
>>   make: *** [scripts] Error 2
>>
>> The related binutils information:
>>
>>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-ld
>>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
>>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-as
>>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
>>
> 

It is really the original sh-linux-gnu- compiler's issue (not only for
allmodconfig, but also for sh own config files).

With my new build cross-compiler, It can work for sh architecture own
config files, but can not work with allmodconfig (I will analyze it).

The cross-tools which I build is:

[root@dhcp122 linux-next]# sh3-gchen-linux-gnu-ld -v
GNU ld (crosstool-NG hg+unknown-20130731.103227) 2.22
[root@dhcp122 linux-next]# sh3-gchen-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=sh3-gchen-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/gchen/x-tools/sh3-gchen-linux-gnu/bin/../libexec/gcc/sh3-gchen-linux-gnu/4.8.0/lto-wrapper
Target: sh3-gchen-linux-gnu
Configured with: /root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/src/gcc-4.8.0/configure --build=x86_64-build_unknown-linux-gnu --host=x86_64-build_unknown-linux-gnu --target=sh3-gchen-linux-gnu --prefix=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-local-prefix=/home/gchen/x-tools/sh3-gchen-linux-gnu/sh3-gchen-linux-gnu/sysroot --disable-libmudflap --with-sysroot=/home/gchen/x-tools/sh3-gchen-linux-gnu/sh3-gchen-linux-gnu/sysroot --enable-shared --with-pkgversion='crosstool-NG hg+unknown-20130731.103227' --enable-__cxa_atexit --with-gmp=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-mpfr=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-mpc=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-isl=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-c
 loog=/roo
t/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --with-libelf=/root/src/toolchain_sh/crosstool-ng-2685dfa9de14/.build/sh3-gchen-linux-gnu/buildtools --enable-lto --enable-target-optspace --disable-libgomp --disable-libmudflap --disable-nls --disable-multilib --enable-languages=c
Thread model: posix
gcc version 4.8.0 (crosstool-NG hg+unknown-20130731.103227) 


Next, I will make a confirmation for sh64 compiler whether is OK or not.

Welcome any members' suggestions or completions.

Thanks.

> OH, sorry, for sh64, the related information is
> 
>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh64-linux-gnu-as 
>   binutils-sh64-linux-gnu-2.23.51.0.3-1.fc17.x86_64
> 
> 
>>
>> Is it the binutils's issue ? is the warnings below is the binutils's
>> issue too? (now, I am downloading related tool chain source code of SH,
>> and will try again).
>>
>>
>> Thanks.
>>
>> On 07/30/2013 10:15 AM, Chen Gang wrote:
>>> Hello Maintainers:
>>>
>>> When I build sh64 with allmodconfig (without "EXTRA_CFLAGS=-W"), it
>>> report the warnings below:
>>>
>>>     LD      arch/sh/kernel/cpu/sh5/built-in.o
>>>   WARNING: arch/sh/kernel/cpu/sh5/built-in.o (.cranges): unexpected non-allocatable section.
>>>   Did you forget to use "ax"/"aw" in a .S file?
>>>   Note that for example <linux/init.h> contains
>>>   section definitions for use in .S files.
>>>
>>> Can it cause real world issue ?
>>>
>>> Welcome any members suggestions or completions.
>>>
>>>
>>> Thanks.
>>> --
>>> Chen Gang.
>>>
>>
>>
> 
> 


-- 
Chen Gang

Re: [Suggestion] sh64: kernel: about the warning: "unexpected non-allocatable section".

[Chen Gang]

On 07/31/2013 03:38 PM, Chen Gang wrote:
> On 07/30/2013 02:11 PM, Chen Gang wrote:
>> On 07/30/2013 02:09 PM, Chen Gang wrote:
>>>
>>> For sh, it will report error below:
>>>
>>>   [root@dhcp122 linux-next]# make ARCH=sh CROSS_COMPILE=sh-linux-gnu-
>>>   CC      scripts/mod/empty.o
>>>   as: unrecognized option '-little'
>>>   make[2]: *** [scripts/mod/empty.o] Error 2
>>>   make[1]: *** [scripts/mod] Error 2
>>>   make: *** [scripts] Error 2
>>>
>>> The related binutils information:
>>>
>>>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-ld
>>>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
>>>   [root@dhcp122 build-binutils-or32]# rpm -qf /usr/bin/sh-linux-gnu-as
>>>   binutils-sh-linux-gnu-2.23.51.0.3-1.fc17.x86_64
>>>
>>
> 
> It is really the original sh-linux-gnu- compiler's issue (not only for
> allmodconfig, but also for sh own config files).
> 
> With my new build cross-compiler, It can work for sh architecture own
> config files, but can not work with allmodconfig (I will analyze it).
> 

after delete "-m32" in "scripts/recordmcount.pl", it will be OK.

The related patch which I have sent:

----------------------------patch begin----------------------------------

diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 858966a..679218b 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -262,7 +262,6 @@ if ($arch eq "x86_64") {
     # force flags for this arch
     $ld .= " -m shlelf_linux";
     $objcopy .= " -O elf32-sh-linux";
-    $cc .= " -m32";
 
 } elsif ($arch eq "powerpc") {
     $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\.?\\S+)";
-- 
1.7.7.6

----------------------------patch end------------------------------------

...
> 
> Next, I will make a confirmation for sh64 compiler whether is OK or not.
> 
> Welcome any members' suggestions or completions.
> 
> Thanks.
> 
...
>>>
>>> On 07/30/2013 10:15 AM, Chen Gang wrote:
>>>> Hello Maintainers:
>>>>
>>>> When I build sh64 with allmodconfig (without "EXTRA_CFLAGS=-W"), it
>>>> report the warnings below:
>>>>
>>>>     LD      arch/sh/kernel/cpu/sh5/built-in.o
>>>>   WARNING: arch/sh/kernel/cpu/sh5/built-in.o (.cranges): unexpected non-allocatable section.
>>>>   Did you forget to use "ax"/"aw" in a .S file?
>>>>   Note that for example <linux/init.h> contains
>>>>   section definitions for use in .S files.
>>>>
>>>> Can it cause real world issue ?
>>>>
>>>> Welcome any members suggestions or completions.
>>>>
>>>>

I have built sh64 cross compiler, it also reports the related warning.

It is not cross compiler's issue, need permit ".cranges' section for
sh64 architecture in "scripts/mod/modpost.c".

The related patch which I have sent:

----------------------------patch begin----------------------------------

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 6216434..8247979 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -821,6 +821,7 @@ static const char *section_white_list[]  {
 	".comment*",
 	".debug*",
+	".cranges",		/* sh64 */
 	".zdebug*",		/* Compressed debug sections. */
 	".GCC-command-line",	/* mn10300 */
 	".GCC.command.line",	/* record-gcc-switches, non mn10300 */
-- 
1.7.7.6

----------------------------patch end------------------------------------

>>>> Thanks.
>>>> --
>>>> Chen Gang.
>>>>
>>>
>>>
>>
>>
> 
> 

Thanks.
-- 
Chen Gang