Linus,
It's been reported that function tracing does not work on the sh architecture
because gcc 4.8 for superH does not support -m32, and the recordmcount.pl
script adds "-m32" when re-compiling the object files with the mcount
locations.
I was not able to reproduce this problem, as it seems that -m32 works fine
for my cross compiler gcc 4.6.3, but I have to assume that -m32 was
deprecated somewhere between 4.6 and 4.8. As it still seems to compile
fine without -m32, I have no reason not to add this patch, as having
-m32 seems to cause trouble for others.
Please pull the latest trace-sh-3.19 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-sh-3.19
Tag SHA1: 625455641691af5faff3cef679b840d5824eb96c
Head SHA1: 1caf6aaaa47471831d77c75f094d4e00ad1ec808
Michael Karcher (1):
scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
----
scripts/recordmcount.pl | 1 -
1 file changed, 1 deletion(-)
---------------------------
commit 1caf6aaaa47471831d77c75f094d4e00ad1ec808
Author: Michael Karcher <kernel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Sun Jan 18 00:36:15 2015 +0100
scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
Compiling SH with gcc-4.8 fails due to the -m32 option not being
supported.
From http://buildd.debian-ports.org/status/fetch.php?pkg=linux&arch=sh4&ver=3.16.7-ckt4-1&stamp=1421425783
CC init/main.o
gcc-4.8: error: unrecognized command line option '-m32'
ld: cannot find init/.tmp_mc_main.o: No such file or directory
objcopy: 'init/.tmp_mx_main.o': No such file
rm: cannot remove 'init/.tmp_mx_main.o': No such file or directory
rm: cannot remove 'init/.tmp_mc_main.o': No such file or directory
Link: http://lkml.kernel.org/r/1421537778-29001-1-git-send-email-kernel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/54BCBDD4.10102@xxxxxxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Reported-by: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Karcher <kernel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 56ea99a12ab7..537c38ca2e1c 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -255,7 +255,6 @@ 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+)";
--
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