On 03/31/2016 03:01 PM, ChenQi wrote:
On 03/29/2016 10:16 AM, Khem Raj wrote:
On Mar 28, 2016, at 6:38 PM, ChenQi <qi.c...@windriver.com> wrote:
On 02/23/2016 06:31 AM, Andre McCurdy wrote:
On Sat, Feb 20, 2016 at 12:07 AM, Khem Raj <raj.k...@gmail.com> wrote:
Drop kconfig and options-group support
Forward port cross-localedef support
Assume ssp support in libc when building gcc-initial
Breaks for me when building for x86 with -Os (building with
-O1/-O2/-O3 are all OK):
i686-rdk-linux-gcc -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse
--sysroot=/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/vbox32-tcbootstrap
../sysdeps/unix/sysv/linux/posix_fallocate.c -c -std=gnu11
-fgnu89-inline -Os -Wall -Werror -Wno-error -Wundef -Wwrite-strings
-fdebug-prefix-map=/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/vbox32=
-fdebug-prefix-map=/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/x86_64-linux=
-fdebug-prefix-map=/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux=/usr/src/glibc
-fdebug-prefix-map=/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/git=/usr/src/glibc
-feliminate-unused-debug-types -fmerge-all-constants -frounding-math
-g -pipe -Wstrict-prototypes -Wold-style-definition -Wa,-mtune=i686
-fexceptions -ftls-model=initial-exec -I../include
-I/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux/io
-I/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux
-I../sysdeps/unix/sysv/linux/i386/i686 -I../sysdeps/i386/i686/nptl
-I../sysdeps/unix/sysv/linux/i386 -I../sysdeps/unix/sysv/linux/x86
-I../sysdeps/i386/nptl -I../sysdeps/unix/sysv/linux/include
-I../sysdeps/unix/sysv/linux -I../sysdeps/nptl -I../sysdeps/pthread
-I../sysdeps/gnu -I../sysdeps/unix/inet -I../sysdeps/unix/sysv
-I../sysdeps/unix/i386 -I../sysdeps/unix -I../sysdeps/posix
-I../sysdeps/i386/i686/fpu/multiarch -I../sysdeps/i386/i686/fpu
-I../sysdeps/i386/i686/multiarch -I../sysdeps/i386/i686
-I../sysdeps/i386/fpu -I../sysdeps/x86/fpu/include
-I../sysdeps/x86/fpu -I../sysdeps/i386 -I../sysdeps/x86
-I../sysdeps/wordsize-32 -I../sysdeps/ieee754/ldbl-96
-I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32
-I../sysdeps/ieee754 -I../sysdeps/generic -I.. -I../libio -I.
-nostdinc -isystem
/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/x86_64-linux/usr/bin/i686-rdk-linux.gcc-cross-initial-i686/../../lib/i686-rdk-linux.gcc-cross-initial-i686/gcc/i686-rdk-linux/5.3.0/include
-isystem
/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/x86_64-linux/usr/bin/i686-rdk-linux.gcc-cross-initial-i686/../../lib/i686-rdk-linux.gcc-cross-initial-i686/gcc/i686-rdk-linux/5.3.0/include-fixed
-isystem
/home/andre/rdk/rdk-master/build-vbox32/tmp/sysroots/vbox32/usr/include
-D_LIBC_REENTRANT -include
/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h -o
/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux/io/posix_fallocate.o
-MD -MP -MF
/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux/io/posix_fallocate.o.dt
-MT
/home/andre/rdk/rdk-master/build-vbox32/tmp/work/core2-32-rdk-linux/glibc/2.23-r0/build-i686-rdk-linux/io/posix_fallocate.o
../sysdeps/unix/sysv/linux/posix_fallocate.c: In function
'posix_fallocate':
../sysdeps/unix/sysv/linux/posix_fallocate.c:39:1: error: bp cannot be
used in asm here
}
^
../sysdeps/unix/sysv/linux/posix_fallocate.c:39:1: error: bp cannot be
used in asm here
Hi All,
For the latest master, if 'DEBUG_BUILD' is enabled, the above error
appers.
| ../sysdeps/unix/sysv/linux/posix_fallocate.c: In function
'posix_fallocate':
| ../sysdeps/unix/sysv/linux/posix_fallocate.c:39:1: error: bp
cannot be used in asm here
| }
| ^
The problem could be reproduced if we add in local.conf the
following line.
DEBUG_BUILD = "1"
Do you have any idea what's going on there?
posix_fallocate is calling a syscall helper with 6 argument, and
there has been i386 specific optimization added to glibc
which checks for gcc version and if its >= 5.0 then relies upon gcc
to do right thing when spilling ebp, and switched to using
inline syscall handler. But this spill is working/tested with -O2 and
everything else is just a bonus if it works. Can you try this
patch to glibc ?
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -46,7 +46,7 @@
to compile glibc. Disable GCC 5 optimization when compiling for
profiling since asm ("ebp") can't be used to put the 6th argument
in %ebp for syscall. */
-#if __GNUC_PREREQ (5,0) && !defined PROF
+#if __GNUC_PREREQ (5,0) && !defined PROF && !defined __OPTIMIZE_SIZE__
# define OPTIMIZE_FOR_GCC_5
#endif
Hi Khem,
Thanks for your reply.
I've tried the above patch, but the problem is still there :(
Best Regards,
Chen Qi
And if we remove " -fno-omit-frame-pointer" from CFLAGS, things work.
CFLAGS_remove_pn-glibc_x86 = " -fno-omit-frame-pointer"
Regards,
Chen Qi
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