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 <mickael.gu...@st.com>
Signed-off-by: Christophe Lyon <christophe.l...@st.com>
diff --git a/libpthread/nptl/sysdeps/generic/libc-tls.c
b/libpthread/nptl/sysdeps/generic/libc-tls.c
index 58e77ff..725f3df 100644
--- a/libpthread/nptl/sysdeps/generic/libc-tls.c
+++ b/libpthread/nptl/sysdeps/generic/libc-tls.c
@@ -36,6 +36,11 @@
extern ElfW(Phdr) *_dl_phdr;
extern size_t _dl_phnum;
+#ifdef __FDPIC__
+/* phdr->p_vaddr is not valid in FDPIC mode. To find tdata start we
+ use the linker script defined symbol __tdata_start. */
+extern int __tdata_start;
+#endif
static dtv_t static_dtv[2 + TLS_SLOTINFO_SURPLUS];
@@ -130,7 +135,11 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign)
/* Remember the values we need. */
memsz = phdr->p_memsz;
filesz = phdr->p_filesz;
+#ifdef __FDPIC__
+ initimage = (void *) &__tdata_start;
+#else
initimage = (void *) phdr->p_vaddr;
+#endif
align = phdr->p_align;
if (phdr->p_align > max_align)
max_align = phdr->p_align;
--
2.6.3
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