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[PATCH] csky: support bsd-setjmp and bsd-_setjmp.
by Guo Ren 15 Mar '18

15 Mar '18

Signed-off-by: Guo Ren <ren_guo(a)c-sky.com> --- libc/sysdeps/linux/csky/setjmp.S | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/libc/sysdeps/linux/csky/setjmp.S b/libc/sysdeps/linux/csky/setjmp.S index 03b402b..fb4b156 100644 --- a/libc/sysdeps/linux/csky/setjmp.S +++ b/libc/sysdeps/linux/csky/setjmp.S @@ -7,7 +7,7 @@ #include <sysdep.h> -ENTRY(setjmp) +ENTRY(__sigsetjmp) stw sp, (a0, 0) stw lr, (a0, 4) @@ -43,8 +43,20 @@ ENTRY(setjmp) ldw lr, (sp, 0) addi sp, 8 rts +END(__sigsetjmp) + +/* + * Support bsd-setjmp and bsd-_setjmp with tail-call method. + * Use br to keep the lr-reg, we must return to the Caller not setjmp. + * And we will rts by __sigsetjmp. + */ +ENTRY(setjmp) + movi a1, 1 + br __sigsetjmp END(setjmp) -strong_alias(setjmp, __sigsetjmp) -strong_alias(setjmp, _setjmp) +ENTRY(_setjmp) + movi a1, 0 + br __sigsetjmp +END(_setjmp) -- 2.7.4

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uClibc-ng 1.0.29 release
by Waldemar Brodkorb 04 Mar '18

04 Mar '18

Hi, I released uClibc-ng 1.0.29 today. The new release contains mostly bugfixes for aarch64 and x86_64. I use Gentoo/uClibc-ng since some weeks and found some Glibc compatibility issues. I run chromium every day on my Lenovo X200 with lates uClibc-ng. I integrated gettext-tiny, which allows to use uClibc-ng for Desktop when compiling software with i18n requirements. Attention: arc4random is removed. best regards Waldemar

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Re: [uclibc-ng-devel] Undefined reference to name_to_handle_at while building eudev
by Waldemar Brodkorb 28 Feb '18

28 Feb '18

Hi, this time it is only relevant to aarch64, as I imported it from glibc without recognizing that I should have removed it. best regards Waldemar > On 28. Feb 2018, at 11:34, Thomas Petazzoni <thomas.petazzoni(a)bootlin.com> wrote: > > Hello, > >> On Sun, 11 Feb 2018 12:07:33 -0800, Alexey Neyman wrote: >> >> I noticed a failure while compiling eudev against uClibc-ng 1.0.28 on >> aarch64: it detected name_to_handle_at being declared in the header but >> then failed to link because it is not implemented in uClibc-ng. >> >> Patch attached. > > A quick heads up on this: it is by far not the first time that I see > uClibc headers having the prototype for a given function, and not the > actual implementation of this function. > > It is confusing, and sometimes causes problems when just an autoconf > compile test is done, and not an autoconf link test. > > Shouldn't this be fixed globally ? > > Thomas > -- > Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons) > Embedded Linux and Kernel engineering > http://bootlin.com >

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Undefined reference to name_to_handle_at while building eudev
by Alexey Neyman 14 Feb '18

14 Feb '18

Hi, I noticed a failure while compiling eudev against uClibc-ng 1.0.28 on aarch64: it detected name_to_handle_at being declared in the header but then failed to link because it is not implemented in uClibc-ng. Patch attached. Regards, Alexey.

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[PATCH] csky: bugfix ltp open12 failed.
by Guo Ren 04 Feb '18

04 Feb '18

Signed-off-by: Guo Ren <ren_guo(a)c-sky.com> --- libc/sysdeps/linux/csky/bits/fcntl.h | 55 ++++++++++++++++++++++++++++-------- 1 file changed, 43 insertions(+), 12 deletions(-) diff --git a/libc/sysdeps/linux/csky/bits/fcntl.h b/libc/sysdeps/linux/csky/bits/fcntl.h index feacdad..15c1f52 100644 --- a/libc/sysdeps/linux/csky/bits/fcntl.h +++ b/libc/sysdeps/linux/csky/bits/fcntl.h @@ -2,11 +2,12 @@ # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." #endif - #include <sys/types.h> #ifdef __USE_GNU # include <bits/uio.h> #endif + + /* open/fcntl - O_SYNC is only implemented on blocks devices and on files located on an ext2 file system */ #define O_ACCMODE 0003 @@ -24,12 +25,16 @@ #define O_FSYNC O_SYNC #define O_ASYNC 020000 -#ifdef __USE_GNU +#ifdef __USE_XOPEN2K8 # define O_DIRECTORY 040000 /* Must be a directory. */ # define O_NOFOLLOW 0100000 /* Do not follow links. */ +# define O_CLOEXEC 02000000 /* Set close_on_exec. */ +#endif + +#ifdef __USE_GNU # define O_DIRECT 0200000 /* Direct disk access. */ -# define O_STREAMING 04000000/* streaming access */ -# define O_CLOEXEC 02000000 /* set close_on_exec */ +# define O_NOATIME 01000000 /* Do not set atime. */ +# define O_PATH 010000000 /* Resolve pathname but do not open file. */ #endif /* For now Linux has synchronisity options for data and read operations. @@ -63,7 +68,7 @@ #define F_SETLK64 13 /* Set record locking info (non-blocking). */ #define F_SETLKW64 14 /* Set record locking info (blocking). */ -#if defined __USE_BSD || defined __USE_XOPEN2K +#if defined __USE_BSD || defined __USE_UNIX98 # define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ # define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ #endif @@ -77,9 +82,13 @@ # define F_SETLEASE 1024 /* Set a lease. */ # define F_GETLEASE 1025 /* Enquire what lease is active. */ # define F_NOTIFY 1026 /* Request notfications on a directory. */ +# define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with + close-on-exit set on new fd. */ +# define F_SETPIPE_SZ 1031 /* Set pipe page size array. */ +# define F_GETPIPE_SZ 1032 /* Get pipe page size array. */ #endif -/* For F_[GET|SET]FL. */ +/* For F_[GET|SET]FD. */ #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ @@ -163,6 +172,28 @@ struct flock64 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ #endif + +#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ +/* Flags for SYNC_FILE_RANGE. */ +# define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages + in the range before performing the + write. */ +# define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those + dirty pages in the range which are + not presently under writeback. */ +# define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in + the range after performing the + write. */ + +/* Flags for SPLICE and VMSPLICE. */ +# define SPLICE_F_MOVE 1 /* Move pages instead of copying. */ +# define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing + (but we may still block on the fd + we splice from/to). */ +# define SPLICE_F_MORE 4 /* Expect more data. */ +# define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */ +#endif + __BEGIN_DECLS #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ @@ -171,23 +202,23 @@ __BEGIN_DECLS extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) __THROW; - /* Selective file content synch'ing. */ extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, - unsigned int __flags); + unsigned int __flags); /* Splice address range into a pipe. */ extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, - size_t __count, unsigned int __flags); + size_t __count, unsigned int __flags); /* Splice two files together. */ extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout, - __off64_t *__offout, size_t __len, - unsigned int __flags); + __off64_t *__offout, size_t __len, + unsigned int __flags); /* In-kernel implementation of tee for pipe buffers. */ extern ssize_t tee (int __fdin, int __fdout, size_t __len, - unsigned int __flags); + unsigned int __flags); #endif __END_DECLS + -- 2.7.4

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[PATCH 1/1] aarch64/sys/ucontext.h: include bits/sigcontext.h
by Bernd Kuhls 04 Feb '18

04 Feb '18

Fixes a buildroot build error with ffmpeg In file included from /home/bernd/buildroot/output/host/aarch64-buildroot-linux-uclibc/sysroot/usr/include/signal.h:329:0, from fftools/ffmpeg.h:26, from fftools/ffmpeg_opt.c:23: /home/bernd/buildroot/output/host/aarch64-buildroot-linux-uclibc/sysroot/usr/include/sys/ucontext.h:52:16: error: field 'uc_mcontext' has incomplete type mcontext_t uc_mcontext; ^~~~~~~~~~~ using this defconfig: BR2_aarch64=y BR2_PACKAGE_FFMPEG=y sys/ucontext.h for other archs already include bits/sigcontext.h, on aarch64 this is needed as well. Signed-off-by: Bernd Kuhls <bernd.kuhls(a)t-online.de> --- libc/sysdeps/linux/aarch64/sys/ucontext.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libc/sysdeps/linux/aarch64/sys/ucontext.h b/libc/sysdeps/linux/aarch64/sys/ucontext.h index d17458896..dc7303b54 100644 --- a/libc/sysdeps/linux/aarch64/sys/ucontext.h +++ b/libc/sysdeps/linux/aarch64/sys/ucontext.h @@ -26,6 +26,10 @@ #include <sys/procfs.h> +/* We need the signal context definitions even if they are not used + included in <signal.h>. */ +#include <bits/sigcontext.h> + typedef elf_greg_t greg_t; /* Container for all general registers. */ -- 2.11.0

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mman.h patch
by Waldemar Brodkorb 02 Feb '18

02 Feb '18

Hi, I would like to push attached patch next week. Any veto? best regards Waldemar

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[PATCH] xtensa: fix R_XTENSA_TLSDESC_ARG handling in _dl_do_reloc
by Max Filippov 21 Jan '18

21 Jan '18

R_XTENSA_TLSDESC_ARG is a true RELA relocation, the addend is in the relocation record itself, not in place. Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com> --- ldso/ldso/xtensa/elfinterp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/ldso/ldso/xtensa/elfinterp.c b/ldso/ldso/xtensa/elfinterp.c index 4c83ab65e668..e38a02666477 100644 --- a/ldso/ldso/xtensa/elfinterp.c +++ b/ldso/ldso/xtensa/elfinterp.c @@ -244,10 +244,11 @@ _dl_do_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope, if (!TRY_STATIC_TLS ((struct link_map *) tls_tpnt)) *reloc_addr = (ElfW(Addr)) _dl_make_tlsdesc_dynamic((struct link_map *) tls_tpnt, - symbol_addr + *reloc_addr); + symbol_addr + rpnt->r_addend); else #endif - *reloc_addr += symbol_addr + tls_tpnt->l_tls_offset; + *reloc_addr = symbol_addr + rpnt->r_addend + + tls_tpnt->l_tls_offset; break; #endif -- 2.1.4

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[PATCH] xtensa: fix _dl_tlsdesc_dynamic
by Max Filippov 21 Jan '18

21 Jan '18

There are multiple errors in _dl_tlsdesc_dynamic: - the reference C implementation should return pointer to the thread-local variable, not offset from the thread pointer, because the xtensa ABI expects TLSDESC_FN to return pointer to the TLS variable; - addx8 used for indexing into dtv has its second and third registers in wrong order, the index must be multiplied by 8, not the base; - the same addx8 uses wrong base: instead of dtv it adds the offset to the threadptr; - the return value in the fast path is calculated as td->tlsinfo.ti_offset - __builtin_thread_pointer, not what was intended; - both fast and slow paths should not subtract __builtin_thread_pointer from the result. Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com> --- ldso/ldso/xtensa/dl-tlsdesc.S | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/ldso/ldso/xtensa/dl-tlsdesc.S b/ldso/ldso/xtensa/dl-tlsdesc.S index 6f417f61a98b..426f2180b3c0 100644 --- a/ldso/ldso/xtensa/dl-tlsdesc.S +++ b/ldso/ldso/xtensa/dl-tlsdesc.S @@ -39,7 +39,7 @@ END (_dl_tlsdesc_return) The assembly code that follows is a rendition of the following C code, hand-optimized a little bit. - ptrdiff_t + void * _dl_tlsdesc_dynamic(struct tlsdesc_dynamic_arg *td) { dtv_t *dtv = (dtv_t *)THREAD_DTV(); @@ -47,8 +47,8 @@ END (_dl_tlsdesc_return) && dtv[td->tlsinfo.ti_module].pointer.val != TLS_DTV_UNALLOCATED) return dtv[td->tlsinfo.ti_module].pointer.val - + td->tlsinfo.ti_offset - __builtin_thread_pointer(); - return __tls_get_addr (&td->tlsinfo) - __builtin_thread_pointer(); + + td->tlsinfo.ti_offset; + return __tls_get_addr (&td->tlsinfo); } */ @@ -65,33 +65,30 @@ HIDDEN_ENTRY (_dl_tlsdesc_dynamic) /* && dtv[td->tlsinfo.ti_module].pointer.val != TLS_DTV_UNALLOCATED) */ l32i a6, a2, TLSDESC_MODID - addx8 a6, a3, a6 + addx8 a6, a6, a4 l32i a6, a6, 0 beqi a6, -1, .Lslow /* return dtv[td->tlsinfo.ti_module].pointer.val - + td->tlsinfo.ti_offset - __builtin_thread_pointer(); */ - l32i a6, a2, TLSDESC_MODOFF - sub a2, a6, a3 + + td->tlsinfo.ti_offset; */ + l32i a5, a2, TLSDESC_MODOFF + add a2, a6, a5 abi_ret - /* return __tls_get_addr (&td->tlsinfo) - __builtin_thread_pointer(); */ + /* return __tls_get_addr (&td->tlsinfo); */ .Lslow: #if defined(__XTENSA_WINDOWED_ABI__) mov a6, a2 movi a4, __tls_get_addr callx4 a4 - sub a2, a6, a3 + mov a2, a6 retw #elif defined(__XTENSA_CALL0_ABI__) addi a1, a1, -16 s32i a0, a1, 0 - s32i a3, a1, 4 movi a0, __tls_get_addr callx0 a0 - l32i a3, a1, 4 l32i a0, a1, 0 - sub a2, a2, a3 addi a1, a1, 16 ret #else -- 2.1.4

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[PATCH 0/4] Use varargs for common syscall() implementation
by Stafford Horne 15 Jan '18

15 Jan '18

Hello, This is a followup to the ("f764bcffe" or1k: syscall: Pass arguments on the stack) patch which fixes the issue where the definition of syscall() in unistd.h and the common implementation in uclibc-ng don't match. This series allows the implementation to match the definition and then goes on to remove generic implementations used by or1k, nds32 and arc. -Stafford Stafford Horne (4): syscall: Make common implementation match unistd.h or1k: Use new common syscall() implementation nds32: Use new common syscall() implementation arc: Use new common syscall() implementation libc/sysdeps/linux/arc/Makefile.arch | 2 +- libc/sysdeps/linux/arc/syscall.c | 17 ----------------- libc/sysdeps/linux/common/syscall.c | 18 +++++++++++++++++- libc/sysdeps/linux/nds32/Makefile.arch | 4 ++-- libc/sysdeps/linux/nds32/syscall.c | 28 ---------------------------- libc/sysdeps/linux/or1k/Makefile.arch | 2 +- libc/sysdeps/linux/or1k/syscall.c | 32 -------------------------------- 7 files changed, 21 insertions(+), 82 deletions(-) delete mode 100644 libc/sysdeps/linux/arc/syscall.c delete mode 100644 libc/sysdeps/linux/nds32/syscall.c delete mode 100644 libc/sysdeps/linux/or1k/syscall.c -- 2.13.6

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