riscv: add the MAP_UNINITIALIZED definition

This avoids a nommu build failure.

Signed-off-by: Christoph Hellwig <[email protected]>

fix opendir, fpathconf and ttyname_r to use fstat64(), not fstat()

There is no opendir64(), thus even programs built for 64-bit off_t
use opendir(). Before this change, internally opendir() uses fstat(),
with the following breakage if some of struct stat fields are too narrow:

$ strace ls -l
execve("/busybox/ls", ["ls", "-l"], 0x7ffcdc43ede8 /* 16 vars */) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
getuid32()                              = 0
time([1551486393 /* 2019-03-02T00:26:33+0000 */]) = 1551486393 (2019-03-02T00:26:33+0000)
ioctl(0, TIOCGWINSZ, {ws_row=38, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
brk(NULL)                               = 0x9768000
brk(0x9769000)                          = 0x9769000
lstat64(".", 0xffa6e374)                = 0
open(".", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, 0xffa6e378)                    = -1 EOVERFLOW (Value too large for defined data type)

See https://bugs.busybox.net/show_bug.cgi?id=11651

Signed-off-by: Denys Vlasenko <[email protected]>

Fix compilation issue when libuargp is compiled without __UCLIBC_HAS_PROGRAM_INVOCATION_NAME__

This fixes the issue reported at https://github.com/wbx-github/uclibc-ng/issues/2

Signed-off-by: Yann Sionneau <[email protected]>

mips: fix memmove() call when __ARCH_HAS_BWD_MEMCPY__ is not defined

When arch (such as MIPS) does not define __ARCH_HAS_BWD_MEMCPY__, memmove()
calls memcpy() which is wrong for overlapping regions.

Signed-off-by: Petar Jovanovic <[email protected]>

sparc: remove asm constraint

uClibc-ng don't build with gcc 9.1 [1] due to a new check that
"catch illegal asm constraint usage" [2].
gcc 9.1 print this error:
"invalid hard register usage between earlyclobber operand and input operand"
The asm constraint is present in uClibc since it support sparc (back in 2002)[3].
Note: There is no such constraint is Glibc counterpart code [4].
[1] https://gitlab.com/kubu93/toolchains-builder/-/jobs/205435757
[2] https://github.com/gcc-mirror/gcc/commit/b782636f28f5c378897c238081d28d7a4a6ca578
[3] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=3b6d086531102b6d09ce852feb1e370d5dca3ce9
[4]
+https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/sparc/sysdep.h;h=981b2a26b7a91093f821c97876
+e55bc4be2d9f8a;hb=HEAD

preadv/pwritev: fix offset argument type

preadv/pwritev don't provide separate version for 64-bit wide off_t,
and default to 32-bit wide off_t, which results in a mismatch between
declaration and definition for user programs built with
-D_FILE_OFFSET_BITS=64.
Make offset argument of both functions __off64_t.
This fixes test misc/tst-preadvwritev on xtensa.

Signed-off-by: Max Filippov <[email protected]>

xtensa: don't use l32r opcode explicitly

xtensa assembler is capable of representing register loads with either
movi + addmi, l32r or const16, depending on the core configuration.
Don't use '.literal' and 'l32r' directly in the code, use 'movi' and let
the assembler relax them.

Signed-off-by: Max Filippov <[email protected]>

docs/defines.txt: clarify LFS-related macros

Add description for _LARGEFILE_SOURCE, _LARGEFILE64_SOURCE,
_FILE_OFFSET_BITS and __USE_LARGEFILE, __USE_LARGEFILE64 and
__USE_FILE_OFFSET64 macros.

Signed-off-by: Max Filippov <[email protected]>

Fix build with SUPPORT_LD_DEBUG_EARLY enabled

Fix _dl_deallocate_tls in !SHARED case

This patch seems needed in builds where
- SHARED is not defined (no shared lib support)
- and USE_TLS is set

Without this patch, static_dtv is free'ed.
See the following backtrace:
0  __do_check_chunk (p=0x52638 <fork_handler_pool+2296>) at libc/stdlib/malloc-standard/malloc.c:80
1  0x0000000000017fa0 in __do_check_inuse_chunk (p=0x52638 <fork_handler_pool+2296>) at libc/stdlib/malloc-standard/malloc.c:143
2  0x0000000000017354 in free (mem=0x52648 <static_dtv>) at libc/stdlib/malloc-standard/free.c:293
3  0x000000000002d5b0 in _dl_deallocate_tls (tcb=0x58690, dealloc_tcb=false) at libpthread/nptl/sysdeps/generic/dl-tls.c:588
4  0x0000000000021c0c in __deallocate_stack (pd=0x58000) at libpthread/nptl/allocatestack.c:717
5  0x0000000000024408 in __free_tcb (pd=0x58000) at libpthread/nptl/pthread_create.c:217
6  0x00000000000200ac in pthread_join (threadid=360448, thread_return=0x0 <k1c_start>) at libpthread/nptl/pthread_join.c:109
7  0x0000000000010354 in tf (a=0x58000) at tst-basic3.c:42
8  0x00000000000247c8 in start_thread (arg=0x4000200960) at libpthread/nptl/pthread_create.c:285
9  0x0000000000026560 in ?? ()

This backtrace is obtained while debugging tst-basic3 from the uclibc-ng nptl testsuite.
It aborts because of the assert in malloc:
https://elixir.bootlin.com/uclibc-ng/v1.0.31/source/libc/stdlib/malloc-standard/malloc.c#L80

Signed-off-by: Yann Sionneau <[email protected]>

Fix TLS allocation and loading in !SHARED case

For ARCH where shared lib are not supported:
- SHARED is not set (!SHARED is true)
- __ARCH_HAS_NO_LDSO__ is set

so code inside #if !defined __ARCH_HAS_NO_LDSO__ && !defined SHARED
is compiled-out.

But without a call do _dl_aux_init(), _dl_phdr stays NULL and
__libc_setup_tls won't be able to allocate memory for the in-executable TLS
and also won't be able to load the initimage from ELF TLS segment.

This results in segfault when doing things like "errno = 0" like
in tst-cancel15.c for instance in uClibc-ng testsuite.

Signed-off-by: Yann Sionneau <[email protected]>

Fix NULL pointer dereference in open_memstream()

--000000000000cb1b1305827e5ae0
Content-Type: text/plain; charset="UTF-8"

Hi,

Current version of uClibc-ng has issue in open_memstream() function.
If the cookie variable is NULL (due malloc() fail) then null pointer is
dereferenced after if block.

The attached patch fixes this issue.
--
Best regards,
Eugene

<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Hi,<div><br></div><div>Current version of uClibc-ng has issue in open_memstream() function.</div><div>If the cookie variable is NULL (due malloc() fail) then null pointer is dereferenced after if block.</div><div><br></div><div>The attached patch fixes this issue.<br clear="all"><div>-- <br></div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div><span><div>Best regards,<br></div>Eugene</span></div></div></div></div></div></div></div></div></div>

csky: Add EM_CSKY for ldso

Support EM_CSKY 252 elf format.

Changelog:
Increase EM_NUM to 253

Signed-off-by: Guo Ren <[email protected]>
Signed-off-by: Mao Han <[email protected]>

fix issues in ethers.c

Old version manages strings the regular way (i.e. counting on zero-ended
sequences). In fact strings captured from the /etc/ethers file are
'\n'-ended. So, for example, using strchr function could lead to buffer
overflow.

Reported-by: "Andrey V. Zhmurin" <[email protected]

xtensa: add custom bits/poll.h

Definitions of POLLWRNORM, POLLWRBAND and POLLREMOVE in xtensa linux
kernel are non-standard. Provide bits/poll.h with correct values for
these constants.

This fixes the following strace build errors:

  In file included from xlat/pollflags.h:4:0,
                   from poll.c:34:
  ./static_assert.h:40:24: error: static assertion failed: "POLLWRBAND != 0x0100"
   # define static_assert _Static_assert
                          ^
  xlat/pollflags.h:75:1: note: in expansion of macro ‘static_assert’
   static_assert((POLLWRBAND) == (0x0100), "POLLWRBAND != 0x0100");
   ^~~~~~~~~~~~~
  ./static_assert.h:40:24: error: static assertion failed: "POLLREMOVE != 0x0800"
   # define static_assert _Static_assert
                          ^
  xlat/pollflags.h:117:1: note: in expansion of macro ‘static_assert’
   static_assert((POLLREMOVE) == (0x0800), "POLLREMOVE != 0x0800");
   ^~~~~~~~~~~~~

Signed-off-by: Max Filippov <[email protected]>

several patches for uclibc ng

I've got several patches to fix ltp/openmp/uclibc-ng-test testcase fail on
c-sky.
- fix a ltp testcase.
- fix the problem that pthread creat will fail when libomp is linked before
  libc, the variable pagesize is not init.
- fix tst-cancel4 and tst-cancel16.  tst-cancelx4 and tst-cancelx16 still fail
  with this patch applied, cleanup handler is not called for open/creat/fcntl,
  seems some thing wrong with unwind, I haven't check the rootcause yet.

MAINTAINERS: add Mao Han for CSKY

Signed-off-by: Guo Ren <[email protected]>
Signed-off-by: Mao Han <[email protected]>

statfs.h: sync generic header with glibc

Fix issues with aarch64 and df with mismatching header between kernel
and libc.

Defined INLINE_SYSCALL_NOERR_NCS in mips/bits/syscalls.h

On Linux/MIPS (O32 ABI) for system call we have two result registers - v0 and a3.
v0 contains actual syscall result on success or error number on fail, a3 set to 0/1
for indicating syscall success/fail. (if a3 == 1, v0 contains errno).
Now as we can see from definition of handle_sys (arch/mips/kernel/scall32-o32.S),
handler treats returned by syscall function (let's call "original") values in
range [-EMAXERRNO; 0[ as -errno, a3 is set to 1 and final returned (to userspace)
value is (-original).

INLINE_SYSCALL_NOERR_NCS defined in mips/bits/syscalls.h will handle
this behaviour.

Signed-off-by: Volodymyr Boyko <[email protected]>

bump for release 1.0.31

Add support for Thumb-only processors.

* ldso/ldso/arm/aeabi_read_tp.S: Add Thumb version.
* ldso/ldso/arm/dl-startup.h: Do not force ARM encoding, adjust
for Thumb.
* ldso/ldso/arm/resolve.S: Force Thumb encoding on Thumb-only
processors.
* libc/sysdeps/linux/arm/crt1.S: Do not force ARM encoding, adjust
for Thumb.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

time.h: Add CLOCK_TAI

Added in kernel in kernel 3.10 in
1ff3c9677bff ("timekeeping: Add CLOCK_TAI clockid")

NOTE: CLOCK_SGI_CYCLE was not added, as it has been lately removed.

Signed-off-by: Petr Vorel <[email protected]>

mkostemp64: clear flags, as mkostemp does

This should have been made in commit 9649721950 but was forgotten.

Signed-off-by: Carlos Santos <[email protected]>

ARC: Accommodate TLS fix in Binutils

[1] fixes clash of TLS variables on ARC and since LD now calculates relocations
a bit different now we need to update dynamic loader as well otherwise relocs
will be calculated improperly.

Note this is an ABI change and should go in-line with corresponding ARC tools.
That said either arc-2018.09 (to be released in few weeks) or the next version of upstream
Binutils (2.32) are required for normal TLS work on ARC.

Testcase:
----------------------------------8<-------------------------------
#include <stdio.h>
int foo3(void);
int foo1(void);

#ifdef _SHARED
int foo1(){
static __thread int val3=1;
val3 += 2;
return val3;
}

#elif _SHARED2
int foo3(){
static __thread int val2=0;
val2 += 2;
return val2;
}
#else
int main(){
printf("foo1 = %d \n", foo1());
printf("foo3 = %d \n", foo3());
return 0;
}
#endif
--------------------------------->8---------------------------------------

The result shoud be:
----8<----
foo1 = 3
foo3 = 2
---->8----

Commands to build artefacts:
----------------------------------------8<-------------------------------
arc-linux-gcc -fPIE -ffunction-sections  -fdata-sections  -pthread  -Os \
 -fPIC -o testtls.o -D_SHARED -c tst.c
arc-linux-gcc -fPIE -ffunction-sections  -fdata-sections  -pthread  -Os \
 -fPIC -o testtls2.o -D_SHARED2 -c tst.c
arc-linux-gcc  -shared -o libtesttls.so  testtls.o testtls2.o -lm -Os
arc-linux-gcc tst.c  -o tst.out -L./ -ltesttls -Os -fPIE
--------------------------------->8---------------------------------------

Add path to libtesttls.so file to LD_LIBRARY_PATH before runnig
tst.out application.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=714e9a954a2e4123dcb26bb8da850e1344de4f5f

Signed-off-by: Alexey Brodkin <[email protected]>
Signed-off-by: Evgeniy Didin <[email protected]>
CC: Cupertino Miranda <[email protected]>
CC: Vineet Gupta <[email protected]>
CC: Waldemar Brodkorb <[email protected]>

do not expose recvmmsg/sendmmsg for unsupported kernels

bugfix renameat2 wrong implement.

Signed-off-by: Guo Ren <[email protected]>

wordexp: Fix the usage of the internal _itoa function

The original from glibc received the end of the buffer and worked
backwards. Ours needs the beginning of the buffer.

Signed-off-by: Segev Finer <[email protected]>

sched_setaffinity: use the same style with glibc's

Call getpid() in INTERNAL_SYSCALL will break the argument regs,
because gcc couldn't save destoryed regs for system call asm.

Ref to glibc, we could just remove all the check code.

Signed-off-by: Guo Ren <[email protected]>

rtld: Avoid crash on R_ARM_NONE relocation

R_ARM_NONE contains no data, so avoid dereferencing it.

* ldso/ldso/arm/elfinterp.c (_dl_do_reloc): Handle R_ARM_NONE
relocation
(_dl_do_reloc_lazy): Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Fix shm_open posix compliance error code

Handle EISDIR in shm_open like glibc does, and set EINVAL.

* librt/shm.c (shm_open): Handle EISDIR error.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

mbtowc: Fix non compliant behavior for end of string

Match glibc behavior.

* libc/stdlib/stdlib.c (mbtowc): Fix end of string behavior.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

isnan: Add isnan weak alias to __isnan

* libm/s_isnan.c: Add isnan weak alias.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Fix htab_delete loop counter

dlclose can crash or stuck the system:

When calling dlclose() then system can crash or freeze, because
htab_delete() in ldso/ldso/fdpic/dl-inlines.h uses size_t for i which
is a typedef to unsigned int.  We exit the loop on negative value of i
which can never occur since i is an unsigned int. This leads to random
free of various pointers that kill the system.

* ldso/include/inline-hashtab.h (htab_delete): Change type of 'i' to int.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl threads: Fix bug in using a weak variable.

In case __nptl_nthreads is not defined in the final binary then avoid
dereferencing the address since it's null. Anyway this means there is
no other thread and so we must exit.

* libc/misc/internals/__uClibc_main.c (__uClibc_main): Handle case
where &__nptl_nthreads is null.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Replace sbrk with mmap

Replace sbrk with mmap since this commit disables sbrk area
for FDPIC MMU-less platform:
fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/binfmt_elf_fdpic.c?id=4ac313111018cb44ecc250445de5ccb93026a980

* libpthread/nptl/sysdeps/generic/libc-tls.c (__libc_setup_tls):
Handle __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Clear TLS area for static binaries.

busybox init checks it has pid 1, but getpid() returns another value
when building busybox statically. This is because the corresponding
area is not cleared when allocated (it is allocated with
MAP_UNINITIALIZED, whose behavior depends on the Linux kernel's
CONFIG_MMAP_ALLOW_UNINITIALIZED).

This patch fixes the problem by explicitly clearing the memory area.

* libpthread/nptl/sysdeps/generic/libc-tls.c (__libc_tls_setup):
Clear tlsblock.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Use vfork on MMU-less for system()

* libc/stdlib/system.c (FORK): Map to vfork if __ARCH_USE_MMU__
is defined.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Add pthread_mutex_getprioceiling and pthread_mutex_setprioceiling support

* libpthread/nptl/Makefile.in (libpthread-routines-): Remove
pthread_mutex_getprioceiling.c and pthread_mutex_setprioceiling.c.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Allow sem_open to work on MMU-less systems

Allow both tmpfs and ramfs for shm devices.

* libpthread/nptl/linux_fsinfo.h (SHMFS_SUPER_MAGIC_WITH_MMU): Define.
(SHMFS_SUPER_MAGIC_WITHOUT_MMU): Define.
* libpthread/nptl/sem_open.c (__where_is_shmfs): Add support for
SHMFS_SUPER_MAGIC_WITHOUT_MMU.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Use linker-defined symbol to find start of .tdata section.

phdr->p_vaddr of TLS segment is not a valid value for FDPIC so we can
either translate phdr->p_vaddr using loadmap (not easy here) or use a
new linker script defined symbol, whih this patch does.

* libpthread/nptl/sysdeps/generic/libc-tls.c (__tdata_start): Declare.
(__libc_setup_tls): Support __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Do not use madvise

start_thread() uses it, but it is not supported on MMU-less systems.

* libpthread/nptl/pthread_create.c (start_thread): Call madvise
only if __ARCH_USE_MMU__ is defined.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: Disable fork and atfork on MMU-less systems.

They do not work on MMU-less systems.

For atfork, implement a hidden function that always returns EPERM.

* libpthread/nptl/sysdeps/unix/sysv/linux/fork.c: Disable if
__ARCH_USE_MMU__ is not defined.
* libpthread/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c
(__libc_pthread_init): Handle __ARCH_USE_MMU__.
* libpthread/nptl/sysdeps/unix/sysv/linux/register-atfork.c: Likewise.
* libpthread/nptl/sysdeps/unix/sysv/linux/unregister-atfork.c: Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

nptl: disable mprotect usage in stack protection

Since mprotect does not work on MMU-less systems, disable it if
__ARCH_USE_MMU__ is not defined.

* libpthread/nptl/allocatestack.c (change_stack_perm): Call
mprotect only if __ARCH_USE_MMU__ is defined.
(allocate_stack): Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Initialize _dl_error_catch_tsd without FUNCDESC relocation

Make _dl_initial_error_catch_tsd hidden, such that we do not need a
FUNCDESC relocation when initializing _dl_error_catch_tsd.

* ldso/ldso/dl-tls.c (_dl_initial_error_catch_tsd): Declare hidden.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Use ELF_RTYPE_CLASS_DLSYM

rtld must call _dl_find_hash() with ELF_RTYPE_CLASS_DLSYM since we
want a function descriptor.

* ldso/ldso/ldso.c (_dl_get_ready_to_run): Support __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

enable NPTL on TARGET_arm

* extra/Configs/Config.in: enable UCLIBC_HAS_THREADS_NATIVE on
TARGET_arm.

Signed-off-by: Christophe Lyon <[email protected]>

arm/clone.S: Fix threading support

Change clone.S so that in FDPIC case we take into account the fact
that we are given a function descriptor.

* libc/sysdeps/linux/arm/clone.S (__clone): Support __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Compile with -fno-unwind-tables -fno-asynchronous-unwind-tables

Otherwise we have link errors because of unresolved refs in libgcc.a:

ld: /lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/libgcc.a(pr-support.o): in function `_Unwind_GetDataRelBase':
/libgcc/config/arm/pr-support.c:378: undefined reference to `abort'
ld: /lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/libgcc.a(unwind-arm.o): in function `unwind_phase2_forced':
/libgcc/unwind-arm-common.inc:511: undefined reference to `memcpy'

* ldso/ldso/Makefile.in (CFLAGS-rtld): Always use
-fno-unwind-tables -fno-asynchronous-unwind-tables on arm

Signed-off-by: Christophe Lyon <[email protected]>

rtld: Add lazy binding support

Add support for R_ARM_FUNCDESC_VALUE and implement _dl_linux_resolver
for FDPIC on ARM.

* ldso/ldso/arm/elfinterp.c (_dl_linux_resolver): Support __FDPIC__.
(_dl_do_lazy_reloc): Likewise.
* ldso/ldso/arm/resolve.S (_dl_linux_resolve): Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

TLS: fix relocation computation

* ldso/ldso/dl-elf.c (_dl_load_elf_shared_library): Fix
l_tls_initimage computation.
* ldso/ldso/ldso.c (_dl_get_ready_to_run): Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Allow to generate PIE 'static' binary

* libc/misc/internals/__uClibc_main.c (funcdesc_value): New.
(fdpic_init_array_jump): New.
(__uClibc_fini): Support __FDPIC__.
(__uClibc_main): Likewise.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Add runtime support needed for C++ exceptions

Implements __gnu_Unwind_Find_got(), which is called from libgcc while
unwinding.

* libc/sysdeps/linux/arm/Makefile.arch (CSRC): Add find._got.c.
* libc/sysdeps/linux/arm/find_got.c: New file.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Add application startup code for FDPIC

* libc/sysdeps/linux/arm/crt1.S: Define _start for __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

Fix bug in _dl_pread when using pread64 syscall

In ARM_EABI mode, the pread64 syscall parameters are aligned on
64-bits. This syscall is used in rtld when processing FDPIC
relocations.

* ldso/include/dl-syscall.h (__syscall_pread): Fix definition.
(__dl_pread): Fix syscall invocation.
* ldso/ldso/fdpic/dl-sysdep.h (__DL_PREAD): Handle __NR_pread64.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Add startup code

Implement _start: compute parameters for __self_reloc, and give
control to the user program.

* ldso/ldso/arm/dl-startup.h: Implement _start for __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Avoid FUNCDESC relocation on _start

* ldso/ldso/ldso.c (_start): Fix definition for __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Add FDPIC code for arm

Add FDPIC dynamic relocations support, similar to what other FDPIC
targets do.

Lazy binding is implemented in a folllow-up patch.

Disable the SEND* macros because they involve relocations to
access constant strings that are unsupported by the existing
arm version.

Define DL_START, START, ARCH_NEEDS_BOOTSTRAP_RELOCS,
DL_CHECK_LIB_TYPE similarly to what other FDPIC targets do.

Define raise() because _dl_find_hash references __aeabi_uidivmod,
which uses __aeabi_idiv0 which in turn references raise.

* include/elf.h (R_ARM_FUNCDESC): Define.
(R_ARM_FUNCDESC_VALUE): Define.
* ldso/include/dl-string.h (SEND_STDERR, SEND_ADDRESS_STDERR)
(SEND_NUMBER_STDERR): Define empty for __FDPIC__.
* ldso/ldso/arm/dl-inlines.h: New file.
* ldso/ldso/arm/dl-startup.h (PERFORM_BOOTSTRAP_RELOC): Fix type
of load_addr. Fix handling of R_ARM_RELATIVE, add support for
R_ARM_FUNCDESC_VALUE.
(DL_START, START): Define for __FDPIC__.
(raise): Define.
* ldso/ldso/arm/dl-sysdep.h (ARCH_NEEDS_BOOTSTRAP_RELOCS): Define.
(DL_CHECK_LIB_TYPE): Define.
(elf_machine_type_class): Take into account FDPIC related
relocations.
(elf_machine_load_address): Support __FDPIC__.
(elf_machine_relative): Likewise.
* ldso/ldso/arm/elfinterp.c (_dl_linux_resolver): Dummy support
for __FDPIC__, implemented in a later patch.
(_dl_do_reloc): Fix reloc_adr computation for __FDPIC__, fix
handling of local symbols. Fix handling of R_ARM_RELATIVE, add
support for R_ARM_FUNCDESC_VALUE, R_ARM_FUNCDESC.
* ldso/ldso/arm/resolve.S: Make _dl_linux_resolve hidden.
* ldso/ldso/fdpic/dl-inlines.h (htab_delete): Declare.
* libc/sysdeps/linux/arm/bits/elf-fdpic.h: New file, similar to bfin's.
* libc/sysdeps/linux/arm/crtreloc.c: Likewise.
* libc/sysdeps/linux/arm/find_exidx.c (__dl_addr_in_loadaddr) Define.
(find_exidx_callback): Support __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Add #if defined (__FDPIC__)

Like for other FDPIC targets, add defined(__FDPIC__) where needed.

* include/link.h: Include bits/elf-fdpic.h if __FDPIC__ is defined.
(link_map): Use elf32_fdpic_loadaddr if __FDPIC__ is defined.
(dl_phdr_info): Likewise.
* ldso/include/dl-elf.h (__dl_parse_dynamic_info): Support
__FDPIC__.
* ldso/include/dl-hash.h (elf_resolve): Add funcdesc_ht field if
__FDPIC__ is defined.
* ldso/ldso/dl-hash.c (_dl_find_hash): Support __FDPIC__.
* libc/misc/elf/dl-iterate-phdr.c (dl_iterate_phdr): Support __FDPIC__.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

rtld: Do not protect RELRO segments when we don't use an MMU.

Without MMU, we cannot mark memory regions as read-only.

* ldso/ldso/dl-elf.c (_dl_protect_relro): Do nothing if
__ARCH_USE_MMU__ is defined.

Signed-off-by: Christophe Lyon <[email protected]>

Allow to select FDPIC ELF for arm architecture

* extra/Configs/Config.in.arch: Add TARGET_arm to the target list
for UCLIBC_FORMAT_FDPIC_ELF.

Signed-off-by: Mickaël Guêné <[email protected]>
Signed-off-by: Christophe Lyon <[email protected]>

elf.h: add some missing defines

ldso/arc: fix LD_DEBUG segv when printing R_ARC_NONE

Signed-off-by: Vineet Gupta <[email protected]>

Fix prototypes for preadv pwritev.

risc-v: initial 64 bit port, static only (no TLS/NPTL)

Only a simple hello world is tested in qemu system emulation.

remove unused assembler functions for arm

These assembler functions seem to be unused/referenced, so we can remove
them completely.

Signed-off-by: Florian La Roche <[email protected]>

libiconv: add missing header files from previuos commit

Missed in 5fdd379d9dbf8be74f2f1a0d33e62958e817ae7d.

libiconv: port over simplified iconv from musl

librt: clock_nanosleep could be even used without threads

librt: declare clock_nanosleep not only for NPTL

Reported-by: Baruch Siach <[email protected]>
Signed-off-by: Waldemar Brodkorb <[email protected]>

Revert "ldconfig: add glibc compatibility fix"

This reverts commit 2a3bb4daf5778c5875674cd26a3c75b3d460a042.

This is breaking ld.so.cache usage. Seen on Gentoo/amd64.

Reported-by: "Anthony G. Basile" <[email protected]>

bump for release 1.0.30

mention Tile architecture

libdl: first execute all destructors, then munmap library

Fix problem which might exist since 2011. We need to execute
the destructors for all dependant libraries, before munmap the
shared libraries, otherwise running destructor of a dependent library
might cause a segfault, trying to access an already unmapped memory.

This fixes for example segfaults while running php -m with ldap
module.

Reported-By: Dave Flogeras <[email protected]>
Tested-By: Dave Flogeras <[email protected]>

libdl: calculate the length for second parameter of munmap.

Revert 35105679b9a900d58dadd0852e679c235f8176ba and add some debug
code.

linuxthreads: implement pthread_condattr_{s,g}etclock()

More applications are using pthread_condattr_setclock()/
pthread_condattr_getclock() in their code. Port these two
functions from NPTL over to be more compatible.

libdl: end must be bigger than start

libdl: remove gcc warnings

libiconv: remove function, which is not available w/o libiconv a4 macros

libdl: fix problem with unmapping

The munmap was still called with broken length, as sometimes
start was empty. This finally solves segfaults when running
php -m with ldap module activated.

libdl: better checking and logging for ctors/dtors

libdl: remove dead code

libdl: remove LDSO_NO_CLEANUP

libdl: cleanup old inline changelog

Revert "libdl: fix dlclose() issue"

This reverts commit bf4c2d242f587700e3eb2ffd5721ddaf3cdbc7e5.

common/sendfile.c: bugfix can't support offset is NULL

In ltp testcase sendfile08.c, it use offset=NULL to test the api.

PATCH V2:
fixup the stupid missing check in the end. Sorry for lose test.

See "man sendfile" and it really support offset is NULL.

Signed-off-by: Guo Ren <[email protected]>

Revert "common/sendfile.c: bugfix can't support offset is NULL"

This reverts commit b00fd230ed0b49b9f23d829ad5d09859f34bb754.

lseek.c: bugfix ltp lseek01.c

Ref the implement from the glibc and high=0 seems so bad.

Signed-off-by: Guo Ren <[email protected]>

common/sendfile.c: bugfix can't support offset is NULL

In ltp testcase sendfile08.c, it use offset=NULL to test the api.

See "man sendfile" and it really support offset is NULL.

Signed-off-by: Guo Ren <[email protected]>

or1k: add F_{DUPFD_CLOEXEC, SETPIPE_SZ, GETPIPE_SZ}

Those definitions exist on all other architectures, but were not
present in or1k specific headers when or1k support was merged.

On the kernel side, their support is completely architecture
independent, so we just need those definitions to make those fcntl()
calls available on or1k.

Signed-off-by: Thomas Petazzoni <[email protected]>

use __NR_newfstatat only for modern Linux architectures

Otherwise it breaks mips64 n64.
Should be used for aarch64/tilegx only.

hppa: fix runtime issues

Sync clone()/vfork() with GNU C Library.
Allow CFI and fix strsignal() / tcsetattr().

csky: support bsd-setjmp and bsd-_setjmp.

Signed-off-by: Guo Ren <[email protected]>

libdl: fix dlclose() issue

There is a patch included in https://bugs.busybox.net/show_bug.cgi?id=6158
from 2013, which was never applied.
This really fixes the php -m segfaults.

Revert "Revert "libdl: fix size parameter when unmap library in dlclose""

This reverts commit 952bb00f0b2eb576b0bf48c4f87018429a42e28d.

And adds this fix for 64 Bit systems.
http://lists.busybox.net/pipermail/uclibc/2014-December/048737.html

tile: add basic support for tilegx

This adds basic support for tile architecture.
Only static binaries, no ld.so or threading support.
Tested with qemu-tilegx only.

sparc32: Add nop before __startcontext to stop unwinding

From glibc commit 9aa5c222b9e0409143410a02b6364a3b25dbf028
[BZ #22919]

utils: fix compile of msgfmt/msgmerge

The host utils are missing the dependencies, the target
utils need libiconv enabled.

fenv: only allow for ppc e500

bump for release 1.0.29

add missing include to quieten compiler