x86: Count PLT for GOTOFF relocation against IFUNC symbol

Since GOTOFF relocations against IFUNC symbols must go through PLT,
set PLT reference count to 1 for GOTOFF relocation.

bfd/

	PR ld/27998
	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Count PLT for GOTOFF
	relocation against IFUNC symbols.
	(_bfd_x86_elf_adjust_dynamic_symbol): Likewise.

ld/

	PR ld/27998
	* testsuite/ld-i386/i386.exp: Run PR ld/27998 tests.
	* testsuite/ld-i386/pr27998a.d: New file.
	* testsuite/ld-i386/pr27998a.s: Likewise.
	* testsuite/ld-i386/pr27998b.d: Likewise.
	* testsuite/ld-i386/pr27998b.s: Likewise.

5 files changed, 58 insertions, 0 deletions

diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index 3d6047b..ceb6000 100644
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -519,6 +519,8 @@ run_dump_test "pr19939a"
 run_dump_test "pr19939b"
 run_dump_test "tlsdesc2"
 run_dump_test "report-reloc-1"
+run_dump_test "pr27998a"
+run_dump_test "pr27998b"
 
 proc undefined_weak {cflags ldflags} {
     set testname "Undefined weak symbol"
diff --git a/ld/testsuite/ld-i386/pr27998a.d b/ld/testsuite/ld-i386/pr27998a.d
new file mode 100644
index 0000000..ca3c920
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27998a.d
@@ -0,0 +1,7 @@
+#as: --32
+#ld: -shared -melf_i386
+#readelf: -r --wide
+
+Relocation section '.rel.plt' at offset 0x[0-9a-f]+ contains 1 entry:
+ Offset     Info    Type                Sym. Value  Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_IRELATIVE +
diff --git a/ld/testsuite/ld-i386/pr27998a.s b/ld/testsuite/ld-i386/pr27998a.s
new file mode 100644
index 0000000..ec55cd6
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27998a.s
@@ -0,0 +1,22 @@
+	.text
+	.p2align 4
+	.type	my_foo, @function
+my_foo:
+	ret
+	.size	my_foo, .-my_foo
+	.p2align 4
+	.type	resolve_foo, @function
+resolve_foo:
+	leal	my_foo@GOTOFF(%eax), %eax
+	ret
+	.size	resolve_foo, .-resolve_foo
+	.globl	foo
+	.hidden	foo
+	.type	foo, @gnu_indirect_function
+	.set	foo,resolve_foo
+	.p2align 4
+	.globl	bar
+	.type	bar, @function
+bar:
+	leal	foo@GOTOFF(%eax), %eax
+	ret
diff --git a/ld/testsuite/ld-i386/pr27998b.d b/ld/testsuite/ld-i386/pr27998b.d
new file mode 100644
index 0000000..ca3c920
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27998b.d
@@ -0,0 +1,7 @@
+#as: --32
+#ld: -shared -melf_i386
+#readelf: -r --wide
+
+Relocation section '.rel.plt' at offset 0x[0-9a-f]+ contains 1 entry:
+ Offset     Info    Type                Sym. Value  Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_IRELATIVE +
diff --git a/ld/testsuite/ld-i386/pr27998b.s b/ld/testsuite/ld-i386/pr27998b.s
new file mode 100644
index 0000000..8b023e9
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27998b.s
@@ -0,0 +1,20 @@
+	.text
+	.p2align 4
+	.type	my_foo, @function
+my_foo:
+	ret
+	.size	my_foo, .-my_foo
+	.p2align 4
+	.type	resolve_foo, @function
+resolve_foo:
+	leal	my_foo@GOTOFF(%eax), %eax
+	ret
+	.size	resolve_foo, .-resolve_foo
+	.type	foo, @gnu_indirect_function
+	.set	foo,resolve_foo
+	.p2align 4
+	.globl	bar
+	.type	bar, @function
+bar:
+	leal	foo@GOTOFF(%eax), %eax
+	ret