Properly adjust h->plt.refcount

bfd/

	PR ld/14980
	* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Properly
	adjust h->plt.refcount.
	* elf64-x86-64.c (elf_x86_64_adjust_dynamic_symbol): Likewise.

ld/testsuite/

	PR ld/14980
	* ld-ifunc/ifunc-14c.s: New file.
	* ld-ifunc/ifunc-14e-i386.d: Likewise.
	* ld-ifunc/ifunc-14e-x86-64.d: Likewise.
	* ld-ifunc/ifunc-14f-i386.d: Likewise.
	* ld-ifunc/ifunc-14f-x86-64.d: Likewise.

9 files changed, 79 insertions, 2 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2ceee8d..48f94da 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2012-12-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/14980
+	* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Properly
+	adjust h->plt.refcount.
+	* elf64-x86-64.c (elf_x86_64_adjust_dynamic_symbol): Likewise.
+
 2012-12-19  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* elf32-i386.c (elf_i386_relocate_section): Replace
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index fce70b9..f76c7a7 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -2031,8 +2031,11 @@ elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
 	  if (pc_count || count)
 	    {
 	      h->needs_plt = 1;
-	      h->plt.refcount += 1;
 	      h->non_got_ref = 1;
+	      if (h->plt.refcount <= 0)
+		h->plt.refcount = 1;
+	      else
+		h->plt.refcount += 1;
 	    }
 	}
 
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index a37f793..11ec917 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -2090,8 +2090,11 @@ elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
 	  if (pc_count || count)
 	    {
 	      h->needs_plt = 1;
-	      h->plt.refcount += 1;
 	      h->non_got_ref = 1;
+	      if (h->plt.refcount <= 0)
+		h->plt.refcount = 1;
+	      else
+		h->plt.refcount += 1;
 	    }
 	}
 
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index a97bd42..16bffd8 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2012-12-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/14980
+	* ld-ifunc/ifunc-14c.s: New file.
+	* ld-ifunc/ifunc-14e-i386.d: Likewise.
+	* ld-ifunc/ifunc-14e-x86-64.d: Likewise.
+	* ld-ifunc/ifunc-14f-i386.d: Likewise.
+	* ld-ifunc/ifunc-14f-x86-64.d: Likewise.
+
 2012-12-19  Alan Modra  <amodra@gmail.com>
 
 	PR ld/14962
diff --git a/ld/testsuite/ld-ifunc/ifunc-14c.s b/ld/testsuite/ld-ifunc/ifunc-14c.s
new file mode 100644
index 0000000..3cde56e
--- /dev/null
+++ b/ld/testsuite/ld-ifunc/ifunc-14c.s
@@ -0,0 +1,7 @@
+	.text
+	.globl xxx
+	.type	xxx, @function
+xxx:
+	jmp	foo
+	.size	xxx, .-xxx
+	.hidden	foo
diff --git a/ld/testsuite/ld-ifunc/ifunc-14e-i386.d b/ld/testsuite/ld-ifunc/ifunc-14e-i386.d
new file mode 100644
index 0000000..5380987
--- /dev/null
+++ b/ld/testsuite/ld-ifunc/ifunc-14e-i386.d
@@ -0,0 +1,12 @@
+#source: ifunc-14a.s
+#source: ifunc-14c.s
+#source: ifunc-14b.s
+#ld: -shared -m elf_i386 -z nocombreloc
+#as: --32
+#readelf: -r --wide
+#target: x86_64-*-* i?86-*-*
+
+#failif
+#...
+.* +R_386_NONE +.*
+#...
diff --git a/ld/testsuite/ld-ifunc/ifunc-14e-x86-64.d b/ld/testsuite/ld-ifunc/ifunc-14e-x86-64.d
new file mode 100644
index 0000000..0955c92
--- /dev/null
+++ b/ld/testsuite/ld-ifunc/ifunc-14e-x86-64.d
@@ -0,0 +1,12 @@
+#source: ifunc-14a.s
+#source: ifunc-14c.s
+#source: ifunc-14b.s
+#ld: -shared -m elf_x86_64 -z nocombreloc
+#as: --64
+#readelf: -r --wide
+#target: x86_64-*-*
+
+#failif
+#...
+.* +R_X86_64_NONE +.*
+#...
diff --git a/ld/testsuite/ld-ifunc/ifunc-14f-i386.d b/ld/testsuite/ld-ifunc/ifunc-14f-i386.d
new file mode 100644
index 0000000..ed3dc53
--- /dev/null
+++ b/ld/testsuite/ld-ifunc/ifunc-14f-i386.d
@@ -0,0 +1,12 @@
+#source: ifunc-14a.s
+#source: ifunc-14b.s
+#source: ifunc-14c.s
+#ld: -shared -m elf_i386 -z nocombreloc
+#as: --32
+#readelf: -r --wide
+#target: x86_64-*-* i?86-*-*
+
+#failif
+#...
+.* +R_386_NONE +.*
+#...
diff --git a/ld/testsuite/ld-ifunc/ifunc-14f-x86-64.d b/ld/testsuite/ld-ifunc/ifunc-14f-x86-64.d
new file mode 100644
index 0000000..12fb225
--- /dev/null
+++ b/ld/testsuite/ld-ifunc/ifunc-14f-x86-64.d
@@ -0,0 +1,12 @@
+#source: ifunc-14a.s
+#source: ifunc-14b.s
+#source: ifunc-14c.s
+#ld: -shared -m elf_x86_64 -z nocombreloc
+#as: --64
+#readelf: -r --wide
+#target: x86_64-*-*
+
+#failif
+#...
+.* +R_X86_64_NONE +.*
+#...