Add a test for R_386_GOT32/R_386_GOT32X IFUNC reloc error

bfd/

	PR ld/20244
	* elf32-i386.c (elf_i386_relocate_section): Properly get IFUNC
	symbol name when reporting R_386_GOT32/R_386_GOT32X relocation
	error against local IFUNC symbol without a base register for
	PIC.

ld/

	PR ld/20244
	* testsuite/ld-i386/i386.exp: Run pr20244-4a, pr20244-4b and
	pr20244-4c.
	* testsuite/ld-i386/pr20244-4.s: New file.
	* testsuite/ld-i386/pr20244-4a.d: Likewise.
	* testsuite/ld-i386/pr20244-4b.d: Likewise.
	* testsuite/ld-i386/pr20244-4c.d: Likewise.

bfd/ChangeLog

@@ -1,3 +1,11 @@
+2017-02-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/20244
+	* elf32-i386.c (elf_i386_relocate_section): Properly get IFUNC
+	symbol name when reporting R_386_GOT32/R_386_GOT32X relocation
+	error against local IFUNC symbol without a base register for
+	PIC.
+
 2017-02-15  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* elf32-ppc.c (ppc_elf_check_relocs): Use `%H:' rather than

bfd/elf32-i386.c

@@ -4355,7 +4355,7 @@ r_386_got32:
 		  const char *name;
 
 disallow_got32:
-		  if (h == NULL)
+		  if (h == NULL || h->root.root.string == NULL)
 		    name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
 					     NULL);
 		  else

ld/ChangeLog

@@ -1,3 +1,13 @@
+2017-02-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/20244
+	* testsuite/ld-i386/i386.exp: Run pr20244-4a, pr20244-4b and
+	pr20244-4c.
+	* testsuite/ld-i386/pr20244-4.s: New file.
+	* testsuite/ld-i386/pr20244-4a.d: Likewise.
+	* testsuite/ld-i386/pr20244-4b.d: Likewise.
+	* testsuite/ld-i386/pr20244-4c.d: Likewise.
+
 2017-02-15  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* ldmisc.c (vfinfo): Don't print the function name again either

ld/testsuite/ld-i386/i386.exp

@@ -408,6 +408,9 @@ run_dump_test "pr20244-2a"
 run_dump_test "pr20244-2b"
 run_dump_test "pr20244-2c"
 run_dump_test "pr20244-2d"
+run_dump_test "pr20244-4a"
+run_dump_test "pr20244-4b"
+run_dump_test "pr20244-4c"
 run_dump_test "pr20253-3"
 run_dump_test "pr20253-4a"
 run_dump_test "pr20253-4b"

ld/testsuite/ld-i386/pr20244-4.s

@@ -0,0 +1,10 @@
+	.text
+	.globl	_start
+	.type	_start, @function
+_start:
+	mov	ifunc@GOT, %eax
+	ret
+	.type ifunc, @gnu_indirect_function
+ifunc:
+	mov	$0xbadbeef, %eax
+	ret

ld/testsuite/ld-i386/pr20244-4a.d

@@ -0,0 +1,18 @@
+#source: pr20244-4.s
+#as: --32
+#ld: -m elf_i386
+#objdump: -dw
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+804807c <_start>:
+ +[a-f0-9]+:	8b 05 8c 90 04 08    	mov    0x804908c,%eax
+ +[a-f0-9]+:	c3                   	ret    
+
+0+8048083 <ifunc>:
+ +[a-f0-9]+:	b8 ef be ad 0b       	mov    \$0xbadbeef,%eax
+ +[a-f0-9]+:	c3                   	ret    
+#pass

ld/testsuite/ld-i386/pr20244-4b.d

@@ -0,0 +1,11 @@
+#source: pr20244-4.s
+#as: --32
+#ld: -m elf_i386
+#objdump: -s -j .got
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+Contents of section .got:
+ 804908c 83800408 +.... +
+#pass

ld/testsuite/ld-i386/pr20244-4c.d

@@ -0,0 +1,4 @@
+#source: pr20244-4.s
+#as: --32
+#ld: -pie -m elf_i386
+#error: direct GOT relocation R_386_GOT32X against `ifunc' without base register can not be used when making a shared object