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Hello!
Would the attached patch be acceptable (maybe instead of
__libc_gettimeofday using __gettimeofday)
We have some issues, see
http://bugs.gentoo.org/show_bug.cgi?id=65892
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In a recent post to linux-mips ML (and libc-alpha ML), a problem with
inline syscalls was reported.
http://www.linux-mips.org/archives/linux-mips/2004-10/msg00142.html
It seems uClibc should be fixed also for newer gcc. Here is a patch.
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The attached patch generalizes the use of PIE (all archs are brought in
sync that use/mention it: x86/ppc/frv) and makes use of it building the
target utils.
Tested on x86, ppc should be tested, frv uses -fPIE at one location, but
at another place -fpie, I don't know which is correct (could be both) and
misses the target addition in Config.in.
The test for ppc (requires the earlier sent crt-correction patch to work
correctly):
enable UCLIBC_PIE_SUPPORT, build uClibc and utils, check:
file ./utils/ldd, it should show shared object (instead of executable)
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Requested by Peter Mazinger. Testing wanted.
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- adjust licensing terms of sources for crt*.o
- change the stat ABI to speed it up, matching changes in the kernel
- assorted bug-fixes, improvements and updates in the FR-V port
etc.
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i sent this earlier but perhaps people missed it the first time around :)
http://www.uclibc.org/lists/uclibc/2004-August/009544.html
basically if you try to #include <sys/ucontext.h> on arm it'll fail because
ucontext.h utilizes typedefs found in bits/sigcontext.h ... i386 already has
this fix in uClibc
find attached a trivial patch to fix this
-mike
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Below is a patch to make the pread and pwrite calls work on the SH
architecture. I've only tested this on the SH4 with a 2.4.24 kernel - a
fairly recent kernel is required as the problem is partially fixed in
the kernel itself. For more information (in relation to glibc, but the
problem is the same) see the thread at
http://sourceforge.net/mailarchive/message.php?msg_id=2375908
Someone should really test this on the SH2/3...
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more sane than 'gcc -pg' and seems much easier to support.
-Erik
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size and performance penalty to profiling applications this way, as well as
Heisenberg effects, where the act of measuring changes what is measured.
There are better tools for doing profiling, such as OProfile, that do not
require gcc to instrument the application code.
-Erik
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-Erik
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_dl_pagesize variable in ldso, so avoid aliasing.
-Erik
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-Erik
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the comment, newer kernels appended "64" to __NR_pread and __NR_pwrite.
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instruction errors. Disable it for now.
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Some utilities, such as valgrind, have a legitimate reason to know the address
of the current brk. Since we know such utils will peek under our skirt, we
might as well give them what they expect and not use a gratuitously different
symbol name.
-Erik
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others.
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are being used
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-Erik
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Hi Erik,
I'm not sure why the NIOS support is not in uClibc -- perhaps the patch
was rejected or never submitted? In any case, I'm playing with some NIOS
stuff and created this patch against 0.9.26. The work was done by
Microtronix. I'm not sure who else contributed to it. It would be great
to have the NIOS support available in uClibc so developers don't have to
go searching for these bits.
Pete
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This is a patch for uClibc/libc/sysdeps/linux/mips/sys/procfs.h pulled
from glibc CVS.
This fixes gdb with threaded application (with glibc environment).
Although debugging threaded programs seems not working on uClibc/mips
yet, this patch will be required when it becomes working.
This patch can be applied to any version of uClibc (including current
CVS).
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with s/i686.get_pc_thunk.bx/get_pc_thunk_bx/g to make gcc 3.4 happy.
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Here are a number of minor changes to FR-V-specific bits of the uClibc
port:
- I've adjusted the definition of _dl_mmap to cope with the fact that
there will be a definition for an mmap2-only system.
- We don't have COPY relocs, so optimize the copy reloc-related code
away.
- Change the page size to 16KiB, to match the ABI spec, and not a
stale value I'd copied from a linker config file. Oops.
- Fix error handling in clone and vfork; parts of the changes by David
Howells <dhowells@redhat.com>
- Rearrange includes in crtreloc.c.
- Change the API of __syscall_error, to reduce code size.
- Improve __syscall_return in terms of code size, so as to enable
tail-calling of __syscall_error, at least within libc. Ideally,
__syscall_error should be hidden within libc.so, but this didn't
work because of libdl. I haven't looked into why, and figured I'd
leave it visible for now.
- Rename enumerators and macros in sys/ucontext.h to reduce namespace
pollution.
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have it. It is used by the boehm gc, amoung other things.
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On Mar 20, 2004, Erik Andersen <andersen@codepoet.org> wrote:
> If you supply a FR-V specific link.h header into
> libc/sysdeps/linux/frv/ then you can do the same sortof
> thing that mips does i.e. with sgidefs.h in the headers
> target in libc/sysdeps/linux/mips/Makefile
Thanks, this patch implements your suggestion.
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by extracting the value from the ELF header.
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Because variables are linked to fixed registers, there is a problem in :
(*__errno_location())=(-_r0);
As __errno_location() uses r0 to return the address of the errno location,
the negated address will be assigned instead of the error code.
Attached patch will resolve this.
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which prevents libthread_db (used by gdb) from compiling. Include a
copy within include/sys/user.h for mips, per what was done in glibc.
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syscalls if they are not supported.
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with __NR_mmap is not available (i.e. only __NR_mmap2)
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I added this function after I posted the last version of the FR-V
patch. Add syscall.c.
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is not a SuSv3 symbol). Rather than using __bzero internally per Alexandre's
original patch, use memset instead.
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