libebl: Add ebl_func_addr_mask plus ARM backend implementation.
The ARM EABI says that the zero bit of function symbol st_value indicates
whether the symbol points to a THUMB or ARM function. Also the return
value address in an unwind will contain the same extra bit to indicate
whether to return to a regular ARM or THUMB function. Add a new ebl
function to mask off such bits and turn a function value into a function
address so that we get the actual value that a function symbol or return
address points to. It isn't easily possible to reuse the existing
ebl_resolve_sym_value for this purpose, so we end up with another hook
that can be used from dwfl_module_getsym, handle_cfi and elflint.
Signed-off-by: Mark Wielaard <mjw@redhat.com>
diff --git a/libebl/ChangeLog b/libebl/ChangeLog
index 7198d5e..5ec7101 100644
--- a/libebl/ChangeLog
+++ b/libebl/ChangeLog
@@ -1,3 +1,9 @@
+2014-06-17 Mark Wielaard <mjw@redhat.com>
+
+ * eblinitreg.c (ebl_func_addr_mask): New function.
+ * libebl.h (ebl_func_addr_mask): Define.
+ * libeblP.h (struct ebl): Add func_addr_mask.
+
2014-05-19 Mark Wielaard <mjw@redhat.com>
* Makefile.am (gen_SOURCES): Add eblcheckreloctargettype.c.