X86-64: Allow copy relocs for building PIE

This patch allows copy relocs for non-GOT pc-relative relocation in PIE.

bfd/

	* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Always
	allow copy relocs for building executables.
	(elf_x86_64_check_relocs): Allow copy relocs for non-GOT
	pc-relative relocation in shared object.
	(elf_x86_64_adjust_dynamic_symbol): Allocate copy relocs for
	PIE.
	(elf_x86_64_relocate_section): Don't copy a pc-relative
	relocation into the output file if the symbol needs copy reloc.

ld/testsuite/

	* ld-x86-64/copyreloc-lib.c: New file.
	* ld-x86-64/copyreloc-main.c: Likewise.
	* ld-x86-64/copyreloc-main.out: Likewise.
	* ld-x86-64/copyreloc-main1.rd: Likewise.
	* ld-x86-64/copyreloc-main2.rd: Likewise.

	* ld-x86-64/x86-64.exp: Run copyreloc tests.

7 files changed, 57 insertions, 0 deletions

diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index de784f7..70201ad 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,13 @@
+2014-12-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ld-x86-64/copyreloc-lib.c: New file.
+	* ld-x86-64/copyreloc-main.c: Likewise.
+	* ld-x86-64/copyreloc-main.out: Likewise.
+	* ld-x86-64/copyreloc-main1.rd: Likewise.
+	* ld-x86-64/copyreloc-main2.rd: Likewise.
+
+	* ld-x86-64/x86-64.exp: Run copyreloc tests.
+
 2014-12-02  Andrew Bennett  <andrew.bennett@imgtec.com>
 
 	* ld-mips-elf/mips-elf.exp: Add undefined weak overflow
diff --git a/ld/testsuite/ld-x86-64/copyreloc-lib.c b/ld/testsuite/ld-x86-64/copyreloc-lib.c
new file mode 100644
index 0000000..cbbc5e2
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/copyreloc-lib.c
@@ -0,0 +1 @@
+int a_glob = 2;
diff --git a/ld/testsuite/ld-x86-64/copyreloc-main.c b/ld/testsuite/ld-x86-64/copyreloc-main.c
new file mode 100644
index 0000000..430eefb
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/copyreloc-main.c
@@ -0,0 +1,7 @@
+extern int a_glob;
+
+int
+main (void)
+{
+  return a_glob != 2;
+}
diff --git a/ld/testsuite/ld-x86-64/copyreloc-main.out b/ld/testsuite/ld-x86-64/copyreloc-main.out
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/copyreloc-main.out
diff --git a/ld/testsuite/ld-x86-64/copyreloc-main1.rd b/ld/testsuite/ld-x86-64/copyreloc-main1.rd
new file mode 100644
index 0000000..dcb52dc
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/copyreloc-main1.rd
@@ -0,0 +1,3 @@
+#...
+[0-9a-f ]+R_X86_64_COPY+[0-9a-f ]+ +a_glob \+ 0
+#...
diff --git a/ld/testsuite/ld-x86-64/copyreloc-main2.rd b/ld/testsuite/ld-x86-64/copyreloc-main2.rd
new file mode 100644
index 0000000..d78ea2f
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/copyreloc-main2.rd
@@ -0,0 +1,4 @@
+#failif
+#...
+[0-9a-f ]+R_X86_64_NONE.*
+#...
diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index 886469b..91c9dd9 100644
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -392,6 +392,30 @@ if { [isnative] && [which $CC] != 0 } {
 	    {{readelf {-Wr} plt-main.rd}} \
 	    "plt-main" \
 	] \
+	[list \
+	    "Build copyreloc-lib.so" \
+	    "-shared" \
+	    "-fPIC" \
+	    { copyreloc-lib.c } \
+	    {} \
+	    "copyreloc-lib.so" \
+	] \
+	[list \
+	    "Build copyreloc-main with PIE without -fPIE (1)" \
+	    "tmpdir/copyreloc-lib.so -pie" \
+	    "" \
+	    { copyreloc-main.c } \
+	    {{readelf {-Wr} copyreloc-main1.rd}} \
+	    "copyreloc-main" \
+	] \
+	[list \
+	    "Build copyreloc-main with PIE without -fPIE (2)" \
+	    "tmpdir/copyreloc-lib.so -pie" \
+	    "" \
+	    { copyreloc-main.c } \
+	    {{readelf {-Wr} copyreloc-main2.rd}} \
+	    "copyreloc-main" \
+	] \
     ]
 
     run_ld_link_exec_tests [] [list \
@@ -414,6 +438,14 @@ if { [isnative] && [which $CC] != 0 } {
 	    "plt-main.out" \
 	    "-fPIC" \
 	] \
+	[list \
+	    "Run copyreloc-main with PIE without -fPIE" \
+	    "tmpdir/copyreloc-lib.so -pie" \
+	    "" \
+	    { copyreloc-main.c } \
+	    "copyreloc-main" \
+	    "copyreloc-main.out" \
+	] \
     ]
 
     if { [istarget "x86_64-*-linux*"] \