Commit Graph

16 Commits

Author SHA1 Message Date
Geert Uytterhoeven 84ed8a9905 sh: always link in helper functions extracted from libgcc
E.g. landisk_defconfig, which has CONFIG_NTFS_FS=m:

  ERROR: "__ashrdi3" [fs/ntfs/ntfs.ko] undefined!

For "lib-y", if no symbols in a compilation unit are referenced by other
units, the compilation unit will not be included in vmlinux.  This
breaks modules that do reference those symbols.

Use "obj-y" instead to fix this.

http://kisskb.ellerman.id.au/kisskb/buildresult/8838077/

This doesn't fix all cases. There are others, e.g. udivsi3.
This is also not limited to sh, many architectures handle this in the
same way.

A simple solution is to unconditionally include all helper functions.
A more complex solution is to make the choice of "lib-y" or "obj-y" depend
on CONFIG_MODULES:

  obj-$(CONFIG_MODULES) += ...
  lib-y($CONFIG_MODULES) += ...

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Tested-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-18 19:04:51 -08:00
matt mooney a234ca0faa sh: change to new flag variable
Replace EXTRA_CFLAGS with ccflags-y.

Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-09-23 16:18:18 +09:00
Stuart Menefy dfc349402d sh: Optimised memset for SH4
Optimised version of memset for the SH4 which uses movca.l.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-24 16:28:43 +09:00
Paul Mundt 221c007b02 sh: Rename arch/sh/lib/clear_page.S -> __clear_user.S.
Now that this only contains the __clear_user() function, rename it
accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-27 20:55:46 +09:00
Paul Mundt 473d1cf4ee sh: Decouple mcount from ftrace.
This adds a general CONFIG_MCOUNT in order to permit mcount generation
without ftrace support. This is primarily for allowing platforms to
enable aggressive stack overflow checking without having to enable ftrace
support. Based on the sparc64 implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 19:56:58 +09:00
Matt Fleming 327933f5d6 sh: Function graph tracer support
Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 10:08:01 +09:00
Takashi YOSHII 3b041227f7 sh: Add plain udivsi3 (not _i4*) for gcc-4.1 and lower.
We chan't share code for udivsi3 and udivsi3_i4, because they
have a different clobber list. Copy udivsi3 from gcc-4.1.2.

As shown in arch/sh/lib/udivsi3.S (and -Os.S),

  .global __udivsi3_i4i
  .global __udivsi3_i4
  .global __udivsi3
__udivsi3_i4i:
  ...

Three symbols are sharing one code, which is actually udivsi3_i4i.
But, this results unwanted code with gcc 4.1.

In gcc, these three are treated as pseudo instructions that have
their own clobber list apart from the usual calling convention.

According to sh's machine description. The clobber list is as
follows:

 - udivsi3_i4i : t,r1,pr,mach,macl
 - udivsi3_i4  : t,r0,r1,r4,r5,pr,dr0,dr2,dr4
 - udivsi3     : t,r4,pr

The caller of udivsi3 will be left with a broken r1 and mac*.

gcc-4.1.x and older(at least to 3.4) generate udivsi3.
ST's gcc-4.1.1 seems to be OK because it has _i4i.

Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:43:53 +09:00
Paul Mundt 1aad54a99b sh: Migrate necessary libgcc bits in to arch/sh/lib for SUPERH32.
This moves in the necessary libgcc bits for SUPERH32 and drops the
libgcc linking for the regular targets. This in turn allows us to rip
out quite a few hacks both in sh_ksyms_32 and arch/sh/Makefile.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:42:53 +09:00
Matt Fleming fad57feba7 sh: dynamic ftrace support.
First cut at dynamic ftrace support.

Signed-off-by: Matt Fleming <mjf@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:42:52 +09:00
Adrian Bunk e3b0860090 move arch/sh/lib/io.o to obj-y
EXPORT_SYMBOL's in lib-y considered harmful:

<--  snip  -->

...
  MODPOST 1837 modules
ERROR: "__raw_readsl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/ssb/ssb.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/smc91x.ko] undefined!
ERROR: "__raw_writesl" [drivers/net/3c59x.ko] undefined!
ERROR: "__raw_readsl" [drivers/net/3c59x.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:28 +09:00
Paul Mundt 9895f9429c sh: clear/copy_page renames in lib and lib64.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:54 +09:00
Paul Mundt 62d6b66edc sh: Move sh32 optimized I/O routines to arch/sh/lib/
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:18:41 +09:00
Paul Mundt 98366c20a2 sh: Add -Werror for clean directories.
Follow the MIPS and sparc64 changes for -Werror instrumentation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-07 11:13:55 +09:00
Paul Mundt cdf50b23bf sh: Kill off udivdi3 div64_32 wrapping.
Previously we've been handling udivdi3 references and wrapping
them in to div64_32() automatically. This doesn't get a lot of
use, however, and as akpm noted in the recent thread on l-k:

	http://lkml.org/lkml/2007/2/27/241

we're better off simply ripping it out and going the do_div()
route if there happen to be any places that need it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:55 +00:00
David S. Miller ded220bd8f [STRING]: Move strcasecmp/strncasecmp to lib/string.c
We have several platforms using local copies of identical
code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:39 -07:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00