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[PATCH][gold][aarch64][pr23870] Check whether symbols with MOVW_.ABS relocations require PLT entries

Hello,

The following patch on upstream glibc

https://sourceware.org/ml/libc-alpha/2017-09/msg00282.html
is causing crt1.o to contain R_AARCH64_MOVW_UABS_G* relocations for the symbol "main". AArch64 backend of gold currently does not check whether such symbols require a PLT entry. 

This is causing pr 23870:
When a non-pie referring to a "main" symbol in a shared library is being linked using a recent crt1.o, gold is failing to create a dynamic symbol for "main". Therefore, upon calling "main", such an executable seg-faults.
I added a test case mimicking what _start and __libc_start_main does: The former gives an undefined symbol as an argument to the latter where it is called as a function. Therefore, the symbol does not become a global symbol in either .o and the linker needs to arrange the dynamic relocation.
The attached patch checks if a symbol with R_AARCH64_MOVW_.ABS_G* relocations needs a PLT entry and creates it if necessary. It is tested on aarch64-unknown-linux-gnu and caused no regressions. 

gold/ChangeLog entry:

2019-01-28  Egeyar Bagcioglu  <egeyar.bagcioglu@oracle.com>

    PR 23870
    * aarch64.cc (Target_aarch64::Scan::global): Check if a symbol with
    R_AARCH64_MOVW_.ABS_* relocations requires a PLT entry.
    * testsuite/Makefile.am: Add aarch64_pr23870 test case.
    * testsuite/Makefile.in: Regenerate.
    * testsuite/aarch64_pr23870_bar.c: New file.
    * testsuite/aarch64_pr23870_foo.c: New file.
    * testsuite/aarch64_pr23870_main.S: New file.


Please take a look and apply if legitimate.

Regards,
Egeyar

commit ab5f768146771f03aae01fdfb94b55ced89e4493
Author: Egeyar Bagcioglu <egeyar.bagcioglu@oracle.com>
Date:   Fri Jan 25 17:09:41 2019 +0000

    Orabug 28829875 - Check whether symbols with MOVW_.ABS relocations require PLT entries

diff --git a/gold/aarch64.cc b/gold/aarch64.cc
index 67f2108..ee6b653 100644
--- a/gold/aarch64.cc
+++ b/gold/aarch64.cc
@@ -6496,6 +6496,17 @@ Target_aarch64<size, big_endian>::Scan::global(
 	  gold_error(_("%s: unsupported reloc %u in pos independent link."),
 		     object->name().c_str(), r_type);
 	}
+      // Make a PLT entry if necessary.
+      if (gsym->needs_plt_entry())
+	{
+	  target->make_plt_entry(symtab, layout, gsym);
+	  // Since this is not a PC-relative relocation, we may be
+	  // taking the address of a function. In that case we need to
+	  // set the entry in the dynamic symbol table to the address of
+	  // the PLT entry.
+	  if (gsym->is_from_dynobj() && !parameters->options().shared())
+	    gsym->set_needs_dynsym_value();
+	}
       break;
 
     case elfcpp::R_AARCH64_LD_PREL_LO19:        // 273
diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index 135790b..81272b3 100644
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -3285,6 +3285,26 @@ pr22266: pr22266_main.o pr22266_ar.o gcctestdir/ld
 pr22266_ar.o: pr22266_a.o gcctestdir/ld
 	gcctestdir/ld -r -T $(srcdir)/pr22266_script.t -o $@ pr22266_a.o
 
+if DEFAULT_TARGET_AARCH64
+
+check_PROGRAMS += aarch64_pr23870
+aarch64_pr23870_SOURCES = aarch64_pr23870_foo.c
+aarch64_pr23870_DEPENDENCIES = \
+	gcctestdir/ld gcctestdir/as aarch64_pr23870_main.o \
+	aarch64_pr23870_foo.o aarch64_pr23870_bar.so
+aarch64_pr23870_LDFLAGS = -Wl,-R,. -L. -Wl,-l:aarch64_pr23870_bar.so
+aarch64_pr23870_LDADD = aarch64_pr23870_main.o
+aarch64_pr23870_main.o: aarch64_pr23870_main.S
+	$(COMPILE) -c -o $@ $<
+aarch64_pr23870_foo.o: aarch64_pr23870_foo.c
+	$(COMPILE) -c -o $@ $<
+aarch64_pr23870_bar.o: aarch64_pr23870_bar.c
+	$(COMPILE) -c -fPIC -o $@ $<
+aarch64_pr23870_bar.so: aarch64_pr23870_bar.o
+	$(COMPILE) -shared -o $@ $<
+
+endif DEFAULT_TARGET_AARCH64
+
 endif GCC
 endif NATIVE_LINKER
 
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index db92394..81e07d0 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -107,7 +107,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 	$(am__EXEEXT_31) $(am__EXEEXT_32) $(am__EXEEXT_33) \
 	$(am__EXEEXT_34) $(am__EXEEXT_35) $(am__EXEEXT_36) \
 	$(am__EXEEXT_37) $(am__EXEEXT_38) $(am__EXEEXT_39) \
-	$(am__EXEEXT_40) $(am__EXEEXT_41)
+	$(am__EXEEXT_40) $(am__EXEEXT_41) $(am__EXEEXT_42)
 @NATIVE_OR_CROSS_LINKER_TRUE@am__append_1 = object_unittest \
 @NATIVE_OR_CROSS_LINKER_TRUE@	binary_unittest leb128_unittest \
 @NATIVE_OR_CROSS_LINKER_TRUE@	overflow_unittest
@@ -898,27 +898,28 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_84 = gnu_property_test.sh
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_85 = gnu_property_test.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_86 = pr22266
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_87 = aarch64_pr23870
 
 # These tests work with native and cross linkers.
 
 # Test script section order.
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_87 = script_test_10.sh
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_88 = script_test_10.stdout
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_89 = script_test_10
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_88 = script_test_10.sh
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_89 = script_test_10.stdout
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_90 = script_test_10
 
 # These tests work with cross linkers only.
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_90 = split_i386.sh
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_91 = split_i386_1.stdout split_i386_2.stdout \
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_91 = split_i386.sh
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_92 = split_i386_1.stdout split_i386_2.stdout \
 @DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_i386_3.stdout split_i386_4.stdout split_i386_r.stdout
 
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_92 = split_i386_1 split_i386_2 split_i386_3 \
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_93 = split_i386_1 split_i386_2 split_i386_3 \
 @DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_i386_4 split_i386_r
 
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_93 = split_x86_64.sh \
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_94 = split_x86_64.sh \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_plt_1.sh \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_ifunc_1.sh \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_ifunc_2.sh
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_94 = split_x86_64_1.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_95 = split_x86_64_1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_2.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_3.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_4.stdout \
@@ -926,14 +927,14 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_plt_1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_ifunc_1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	bnd_ifunc_2.stdout
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_95 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_96 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_4 split_x86_64_r
 
-@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_96 = split_x32.sh
-@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_97 = split_x32_1.stdout split_x32_2.stdout \
+@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_97 = split_x32.sh
+@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_98 = split_x32_1.stdout split_x32_2.stdout \
 @DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x32_3.stdout split_x32_4.stdout split_x32_r.stdout
 
-@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_98 = split_x32_1 split_x32_2 split_x32_3 \
+@DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_99 = split_x32_1 split_x32_2 split_x32_3 \
 @DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x32_4 split_x32_r
 
 
@@ -954,7 +955,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 # Check Thumb to ARM farcall veneers
 
 # Check handling of --target1-abs, --target1-rel and --target2 options
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_99 = arm_abs_global.sh \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_100 = arm_abs_global.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_branch_in_range.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_branch_out_of_range.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_fix_v4bx.sh \
@@ -977,7 +978,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target2_got_rel.sh
 
 # The test demonstrates why the constructor of a target object should not access options.
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_100 = arm_abs_global.stdout \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_101 = arm_abs_global.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_in_range.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_out_of_range.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	thumb_bl_in_range.stdout \
@@ -1030,7 +1031,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target2_abs.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target2_got_rel.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target_lazy_init
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_101 = arm_abs_global \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_102 = arm_abs_global \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_in_range \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_out_of_range \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	thumb_bl_in_range \
@@ -1081,20 +1082,20 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target2_abs \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target2_got_rel \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_target_lazy_init
-@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_102 = aarch64_reloc_none.sh \
+@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_103 = aarch64_reloc_none.sh \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_relocs.sh \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	pr21430.sh \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_tlsdesc.sh
-@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_103 = aarch64_reloc_none.stdout \
+@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_104 = aarch64_reloc_none.stdout \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_relocs.stdout \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	pr21430.stdout \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_tlsdesc.stdout
-@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_104 = aarch64_reloc_none \
+@DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_105 = aarch64_reloc_none \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_relocs \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	pr21430 \
 @DEFAULT_TARGET_AARCH64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	aarch64_tlsdesc
-@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_105 = split_s390.sh
-@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_106 = split_s390_z1.stdout split_s390_z2.stdout split_s390_z3.stdout \
+@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_106 = split_s390.sh
+@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_107 = split_s390_z1.stdout split_s390_z2.stdout split_s390_z3.stdout \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_z4.stdout split_s390_n1.stdout split_s390_n2.stdout \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_a1.stdout split_s390_a2.stdout split_s390_z1_ns.stdout \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_z2_ns.stdout split_s390_z3_ns.stdout split_s390_z4_ns.stdout \
@@ -1106,7 +1107,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390x_z4_ns.stdout split_s390x_n1_ns.stdout \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390x_n2_ns.stdout split_s390x_r.stdout
 
-@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_107 = split_s390_z1 split_s390_z2 split_s390_z3 \
+@DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_108 = split_s390_z1 split_s390_z2 split_s390_z3 \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_z4 split_s390_n1 split_s390_n2 split_s390_a1 \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_a2 split_s390_z1_ns split_s390_z2_ns split_s390_z3_ns \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390_z4_ns split_s390_n1_ns split_s390_n2_ns split_s390_r \
@@ -1115,10 +1116,10 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390x_z1_ns split_s390x_z2_ns split_s390x_z3_ns \
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_s390x_z4_ns split_s390x_n1_ns split_s390x_n2_ns split_s390x_r
 
-@DEFAULT_TARGET_X86_64_TRUE@am__append_108 = *.dwo *.dwp
-@DEFAULT_TARGET_X86_64_TRUE@am__append_109 = dwp_test_1.sh \
+@DEFAULT_TARGET_X86_64_TRUE@am__append_109 = *.dwo *.dwp
+@DEFAULT_TARGET_X86_64_TRUE@am__append_110 = dwp_test_1.sh \
 @DEFAULT_TARGET_X86_64_TRUE@	dwp_test_2.sh
-@DEFAULT_TARGET_X86_64_TRUE@am__append_110 = dwp_test_1.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@am__append_111 = dwp_test_1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@	dwp_test_2.stdout
 subdir = testsuite
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -1350,6 +1351,11 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_comdat_test_1$(EXEEXT) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	exception_x86_64_bnd_test$(EXEEXT)
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_41 = pr22266$(EXEEXT)
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_42 = aarch64_pr23870$(EXEEXT)
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am_aarch64_pr23870_OBJECTS = aarch64_pr23870_foo.$(OBJEXT)
+aarch64_pr23870_OBJECTS = $(am_aarch64_pr23870_OBJECTS)
+aarch64_pr23870_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(aarch64_pr23870_LDFLAGS) $(LDFLAGS) -o $@
 basic_pic_test_SOURCES = basic_pic_test.c
 basic_pic_test_OBJECTS = basic_pic_test.$(OBJEXT)
 basic_pic_test_LDADD = $(LDADD)
@@ -2237,16 +2243,16 @@ AM_V_CXXLD = $(am__v_CXXLD_@AM_V@)
 am__v_CXXLD_ = $(am__v_CXXLD_@AM_DEFAULT_V@)
 am__v_CXXLD_0 = @echo "  CXXLD   " $@;
 am__v_CXXLD_1 = 
-SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
-	basic_static_pic_test.c basic_static_test.c basic_test.c \
-	$(binary_test_SOURCES) $(binary_unittest_SOURCES) \
-	$(common_test_1_SOURCES) $(common_test_2_SOURCES) \
-	$(constructor_static_test_SOURCES) $(constructor_test_SOURCES) \
-	$(copy_test_SOURCES) $(copy_test_relro_SOURCES) \
-	$(discard_locals_test_SOURCES) $(dynamic_list_2_SOURCES) \
-	eh_test.c $(ehdr_start_test_1_SOURCES) \
-	$(ehdr_start_test_2_SOURCES) $(ehdr_start_test_3_SOURCES) \
-	$(ehdr_start_test_5_SOURCES) \
+SOURCES = $(libgoldtest_a_SOURCES) $(aarch64_pr23870_SOURCES) \
+	basic_pic_test.c basic_pie_test.c basic_static_pic_test.c \
+	basic_static_test.c basic_test.c $(binary_test_SOURCES) \
+	$(binary_unittest_SOURCES) $(common_test_1_SOURCES) \
+	$(common_test_2_SOURCES) $(constructor_static_test_SOURCES) \
+	$(constructor_test_SOURCES) $(copy_test_SOURCES) \
+	$(copy_test_relro_SOURCES) $(discard_locals_test_SOURCES) \
+	$(dynamic_list_2_SOURCES) eh_test.c \
+	$(ehdr_start_test_1_SOURCES) $(ehdr_start_test_2_SOURCES) \
+	$(ehdr_start_test_3_SOURCES) $(ehdr_start_test_5_SOURCES) \
 	$(exception_same_shared_test_SOURCES) \
 	$(exception_separate_shared_12_test_SOURCES) \
 	$(exception_separate_shared_21_test_SOURCES) \
@@ -2796,9 +2802,9 @@ MOSTLYCLEANFILES = *.so *.syms *.stdout *.stderr $(am__append_4) \
 	$(am__append_34) $(am__append_37) $(am__append_41) \
 	$(am__append_47) $(am__append_51) $(am__append_52) \
 	$(am__append_58) $(am__append_78) $(am__append_81) \
-	$(am__append_83) $(am__append_89) $(am__append_92) \
-	$(am__append_95) $(am__append_98) $(am__append_101) \
-	$(am__append_104) $(am__append_107) $(am__append_108)
+	$(am__append_83) $(am__append_90) $(am__append_93) \
+	$(am__append_96) $(am__append_99) $(am__append_102) \
+	$(am__append_105) $(am__append_108) $(am__append_109)
 
 # We will add to these later, for each individual test.  Note
 # that we add each test under check_SCRIPTS or check_PROGRAMS;
@@ -2808,17 +2814,17 @@ check_SCRIPTS = $(am__append_2) $(am__append_19) $(am__append_23) \
 	$(am__append_45) $(am__append_49) $(am__append_53) \
 	$(am__append_56) $(am__append_62) $(am__append_73) \
 	$(am__append_76) $(am__append_79) $(am__append_84) \
-	$(am__append_87) $(am__append_90) $(am__append_93) \
-	$(am__append_96) $(am__append_99) $(am__append_102) \
-	$(am__append_105) $(am__append_109)
+	$(am__append_88) $(am__append_91) $(am__append_94) \
+	$(am__append_97) $(am__append_100) $(am__append_103) \
+	$(am__append_106) $(am__append_110)
 check_DATA = $(am__append_3) $(am__append_20) $(am__append_24) \
 	$(am__append_30) $(am__append_36) $(am__append_43) \
 	$(am__append_46) $(am__append_50) $(am__append_54) \
 	$(am__append_57) $(am__append_63) $(am__append_74) \
 	$(am__append_77) $(am__append_80) $(am__append_85) \
-	$(am__append_88) $(am__append_91) $(am__append_94) \
-	$(am__append_97) $(am__append_100) $(am__append_103) \
-	$(am__append_106) $(am__append_110)
+	$(am__append_89) $(am__append_92) $(am__append_95) \
+	$(am__append_98) $(am__append_101) $(am__append_104) \
+	$(am__append_107) $(am__append_111)
 BUILT_SOURCES = $(am__append_40)
 TESTS = $(check_SCRIPTS) $(check_PROGRAMS)
 
@@ -3367,6 +3373,13 @@ DEPENDENCIES = \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@exception_x86_64_bnd_test_DEPENDENCIES = gcctestdir/ld exception_x86_64_bnd_1.o exception_x86_64_bnd_2.o
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@exception_x86_64_bnd_test_LDFLAGS = $(exception_test_LDFLAGS) -Wl,-z,bndplt
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@exception_x86_64_bnd_test_LDADD = exception_x86_64_bnd_1.o exception_x86_64_bnd_2.o
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_SOURCES = aarch64_pr23870_foo.c
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_DEPENDENCIES = \
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	gcctestdir/ld gcctestdir/as aarch64_pr23870_main.o \
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	aarch64_pr23870_foo.o aarch64_pr23870_bar.so
+
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_LDFLAGS = -Wl,-R,. -L. -Wl,-l:aarch64_pr23870_bar.so
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_LDADD = aarch64_pr23870_main.o
 @DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@SPLIT_DEFSYMS = --defsym __morestack=0x100 --defsym __morestack_non_split=0x200
 @DEFAULT_TARGET_S390_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@SPLIT_DEFSYMS = --defsym __morestack=0x100 --defsym __morestack_non_split=0x200
 @DEFAULT_TARGET_X32_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@SPLIT_DEFSYMS = --defsym __morestack=0x100 --defsym __morestack_non_split=0x200
@@ -3417,6 +3430,10 @@ libgoldtest.a: $(libgoldtest_a_OBJECTS) $(libgoldtest_a_DEPENDENCIES) $(EXTRA_li
 clean-checkPROGRAMS:
 	-test -z "$(check_PROGRAMS)" || rm -f $(check_PROGRAMS)
 
+aarch64_pr23870$(EXEEXT): $(aarch64_pr23870_OBJECTS) $(aarch64_pr23870_DEPENDENCIES) $(EXTRA_aarch64_pr23870_DEPENDENCIES) 
+	@rm -f aarch64_pr23870$(EXEEXT)
+	$(AM_V_CCLD)$(aarch64_pr23870_LINK) $(aarch64_pr23870_OBJECTS) $(aarch64_pr23870_LDADD) $(LIBS)
+
 @GCC_FALSE@basic_pic_test$(EXEEXT): $(basic_pic_test_OBJECTS) $(basic_pic_test_DEPENDENCIES) $(EXTRA_basic_pic_test_DEPENDENCIES) 
 @GCC_FALSE@	@rm -f basic_pic_test$(EXEEXT)
 @GCC_FALSE@	$(AM_V_CCLD)$(LINK) $(basic_pic_test_OBJECTS) $(basic_pic_test_LDADD) $(LIBS)
@@ -4691,6 +4708,7 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/aarch64_pr23870_foo.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/basic_pic_test.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/basic_pie_test.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/basic_static_pic_test.Po@am__quote@
@@ -7676,6 +7694,13 @@ pr22266.log: pr22266$(EXEEXT)
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
+aarch64_pr23870.log: aarch64_pr23870$(EXEEXT)
+	@p='aarch64_pr23870$(EXEEXT)'; \
+	b='aarch64_pr23870'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
 .test.log:
 	@p='$<'; \
 	$(am__set_b); \
@@ -9463,6 +9488,14 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) pr22266_main.o pr22266_ar.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@pr22266_ar.o: pr22266_a.o gcctestdir/ld
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gcctestdir/ld -r -T $(srcdir)/pr22266_script.t -o $@ pr22266_a.o
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_main.o: aarch64_pr23870_main.S
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -c -o $@ $<
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_foo.o: aarch64_pr23870_foo.c
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -c -o $@ $<
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_bar.o: aarch64_pr23870_bar.c
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -c -fPIC -o $@ $<
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@aarch64_pr23870_bar.so: aarch64_pr23870_bar.o
+@DEFAULT_TARGET_AARCH64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -shared -o $@ $<
 @NATIVE_OR_CROSS_LINKER_TRUE@script_test_10.o: script_test_10.s
 @NATIVE_OR_CROSS_LINKER_TRUE@	$(TEST_AS) -o $@ $<
 @NATIVE_OR_CROSS_LINKER_TRUE@script_test_10: $(srcdir)/script_test_10.t script_test_10.o gcctestdir/ld
diff --git a/gold/testsuite/aarch64_pr23870_bar.c b/gold/testsuite/aarch64_pr23870_bar.c
new file mode 100644
index 0000000..9e19767
--- /dev/null
+++ b/gold/testsuite/aarch64_pr23870_bar.c
@@ -0,0 +1,6 @@
+void bar (void);
+
+void bar ()
+{
+  return;
+}
diff --git a/gold/testsuite/aarch64_pr23870_foo.c b/gold/testsuite/aarch64_pr23870_foo.c
new file mode 100644
index 0000000..ade3ee6
--- /dev/null
+++ b/gold/testsuite/aarch64_pr23870_foo.c
@@ -0,0 +1,6 @@
+void foo (void (*bar)(void));
+
+void foo (void (*bar)(void))
+{
+  bar();
+}
diff --git a/gold/testsuite/aarch64_pr23870_main.S b/gold/testsuite/aarch64_pr23870_main.S
new file mode 100644
index 0000000..c28d2af
--- /dev/null
+++ b/gold/testsuite/aarch64_pr23870_main.S
@@ -0,0 +1,15 @@
+
+	.text
+	.globl main
+	.type main,#function
+main:
+	stp	x29, x30, [sp,#-16]!
+	mov	x29, sp
+	movz	x0, #:abs_g3:bar
+	movk	x0, #:abs_g2_nc:bar
+	movk	x0, #:abs_g1_nc:bar
+	movk	x0, #:abs_g0_nc:bar
+	add     x0, x0, #0x0
+	bl      foo
+	ldp     x29, x30, [sp],#16
+	ret
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