30 Nov
2015
30 Nov
'15
6:16 p.m.
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- Log -----------------------------------------------------------------
commit 53c4826506f49cc3aebefed294a6e4af8bea4133
Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org>
Date: Mon Nov 30 18:32:12 2015 +0100
bfin: fix clashing with newer gcc
See here for a discussion about the problem:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47779
Latest gcc/binutils git can generate a working uClibc-ng
toolchain. Binaries tested on Arcturus uCBF54x board via
chroot from original firmware.
commit 037a5ae08a3e4dca516bc112fbfa1d1f05d1e67b
Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org>
Date: Mon Nov 30 18:31:53 2015 +0100
bfin: use vfork.S again
Actually revert 711ad9f92c1cf992c4a3d9f4f709bd692be7789c, as
it breaks vfork() on real hardware. So the common
implementation no longer works for bfin.
commit a8cbdc3aaaca564e52ee77a9c5eff050ccd7d8a4
Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org>
Date: Tue Nov 24 22:07:16 2015 +0100
xtensa: avoid some compiler warnings
Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com>
Signed-off-by: Waldemar Brodkorb <wbx(a)uclibc-ng.org>
-----------------------------------------------------------------------
Summary of changes:
libc/sysdeps/linux/bfin/Makefile.arch | 2 +-
libc/sysdeps/linux/bfin/sys/ucontext.h | 6 ++++++
libc/sysdeps/linux/bfin/vfork.S | 18 ++++++++++++++++++
.../sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h | 2 ++
4 files changed, 27 insertions(+), 1 deletion(-)
create mode 100644 libc/sysdeps/linux/bfin/vfork.S
diff --git a/libc/sysdeps/linux/bfin/Makefile.arch
b/libc/sysdeps/linux/bfin/Makefile.arch
index df76ab0..8e945cd 100644
--- a/libc/sysdeps/linux/bfin/Makefile.arch
+++ b/libc/sysdeps/linux/bfin/Makefile.arch
@@ -8,7 +8,7 @@
CSRC-y := bsdsetjmp.c clone.c \
sram-alloc.c sram-free.c dma-memcpy.c
-SSRC-y := __longjmp.S setjmp.S bsd-_setjmp.S
+SSRC-y := __longjmp.S setjmp.S bsd-_setjmp.S vfork.S
CSRC-$(UCLIBC_LINUX_SPECIFIC) += cacheflush.c
diff --git a/libc/sysdeps/linux/bfin/sys/ucontext.h
b/libc/sysdeps/linux/bfin/sys/ucontext.h
index 4b3654d..b6e3a40 100644
--- a/libc/sysdeps/linux/bfin/sys/ucontext.h
+++ b/libc/sysdeps/linux/bfin/sys/ucontext.h
@@ -32,6 +32,11 @@ typedef int greg_t;
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
+/* There is no user thread context implementation for bfin, avoid
+ clashing with gcc symbols, see:
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47779
+*/
+#if 0
/* Number of each register is the `gregset_t' array. */
enum
{
@@ -130,6 +135,7 @@ enum
REG_SEQSTAT = 46
#define REG_SEQSTAT REG_SEQSTAT
};
+#endif
/* Context to describe whole processor state. */
typedef struct
diff --git a/libc/sysdeps/linux/bfin/vfork.S b/libc/sysdeps/linux/bfin/vfork.S
new file mode 100644
index 0000000..d8e6557
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/vfork.S
@@ -0,0 +1,18 @@
+/*
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+
+.text
+.global ___vfork
+.hidden ___vfork
+.type ___vfork,STT_FUNC;
+.align 4
+___vfork:
+ p0 = __NR_vfork;
+ excpt 0;
+ rts;
+.size ___vfork,.-___vfork
+weak_alias(__vfork,vfork)
+libc_hidden_weak(vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h
b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h
index 02fe278..be1b5ab 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h
@@ -25,6 +25,7 @@
#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+#ifdef __ASSEMBLER__
#if defined(__XTENSA_WINDOWED_ABI__)
/* CENABLE/CDISABLE in PSEUDO below use call8, stack frame size must be
* at least 32.
@@ -117,6 +118,7 @@
#else
#error Unsupported Xtensa ABI
#endif
+#endif
# ifdef IS_IN_libpthread
# define CENABLE_FUNC __pthread_enable_asynccancel
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