gold/arm.cc: Output mapping symbol for PLT code

Output an ARM state mapping symbol at the start of the PLT. With the
current code objdump will fail to disassemble the PLT that gold
creates.

gold/ChangeLog:

2015-02-11  Will Newton  <will.newton@linaro.org>

	PR gold/13321
	* arm.cc (Target_arm::make_plt_section): Create an ARM
	state mapping symbol at the start of the PLT.

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 87900ad6ea7318f323fee64916ca301be3b01595..17b7f44fb07dca03c5234c37007ceca026237ccb 100644 (file)
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,9 @@
+2015-02-11  Will Newton  <will.newton@linaro.org>
+
+       PR gold/13321
+       * arm.cc (Target_arm::make_plt_section): Create an ARM
+       state mapping symbol at the start of the PLT.
+
 2015-02-09  H.J. Lu  <hongjiu.lu@intel.com>
 
        * testsuite/Makefile.am (two_file_shared_2_pic_1_test_DEPENDENCIES):

diff --git a/gold/arm.cc b/gold/arm.cc
index be2294c3e1baedbb00ecb4269e55e30c0263a771..f1d4fe930bb70a8356a6b12293048d69073e165c 100644 (file)
--- a/gold/arm.cc
+++ b/gold/arm.cc
@@ -7938,6 +7938,13 @@ Target_arm<big_endian>::make_plt_section(
                                      (elfcpp::SHF_ALLOC
                                       | elfcpp::SHF_EXECINSTR),
                                      this->plt_, ORDER_PLT, false);
+      symtab->define_in_output_data("$a", NULL,
+                                   Symbol_table::PREDEFINED,
+                                   this->plt_,
+                                   0, 0, elfcpp::STT_NOTYPE,
+                                   elfcpp::STB_LOCAL,
+                                   elfcpp::STV_DEFAULT, 0,
+                                   false, false);
     }
 }