diff options
| author | Filippo Arcidiacono <filippo.arcidiacono@st.com> | 2010-11-29 23:31:49 +0100 |
|---|---|---|
| committer | Carmelo Amoroso <carmelo.amoroso@st.com> | 2010-12-01 17:26:18 +0100 |
| commit | c5db8f051be9846485911e973f26943c114c66fb (patch) | |
| tree | 742bfe268f4f6f14bb41eb11929682c1831fc4e8 /libpthread | |
| parent | bfeeeb57588f6a58d6a154fbc59b30fb48e27956 (diff) | |
libc_sh: add __tls_get_addr to static libc (SH)
Add __tls_get_addr function to static libc allowing to handle
local dynamic TLS access model.
On SH, linker optimizations are not required, so __tls_get_addr
can be called even in statically linked binaries.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libpthread')
| -rw-r--r-- | libpthread/nptl/sysdeps/sh/Makefile.arch | 2 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/sh/libc-tls.c | 31 |
2 files changed, 32 insertions, 1 deletions
diff --git a/libpthread/nptl/sysdeps/sh/Makefile.arch b/libpthread/nptl/sysdeps/sh/Makefile.arch index 3cb58ec36..411622adc 100644 --- a/libpthread/nptl/sysdeps/sh/Makefile.arch +++ b/libpthread/nptl/sysdeps/sh/Makefile.arch @@ -10,4 +10,4 @@ ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread CFLAGS-pthread_spin_lock.c += -D_GNU_SOURCE - +libc_arch_a_CSRC := libc-tls.c diff --git a/libpthread/nptl/sysdeps/sh/libc-tls.c b/libpthread/nptl/sysdeps/sh/libc-tls.c new file mode 100644 index 000000000..7b3389503 --- /dev/null +++ b/libpthread/nptl/sysdeps/sh/libc-tls.c @@ -0,0 +1,31 @@ +/* + * Thread-local storage handling in statically linked binaries. SH version. + * Copyright (C) 2009 Free Software Foundation, Inc. + * + * Based on GNU C Library (file: libc/sysdeps/sh/libc-tls.c) + * + * Copyright (C) 2010 STMicroelectronics Ltd. + * Author: Filippo Arcidiacono <filippo.arcidiacono@st.com> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + * + */ + +#include <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +#if defined (USE_TLS) && (USE_TLS) + +/* On SH, linker optimizations are not required, so __tls_get_addr + can be called even in statically linked binaries. In this case module + must be always 1 and PT_TLS segment exist in the binary, otherwise it + would not link. */ + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} + +#endif |