Add function and function pointer tests for i386

This patch adds tests for function and function pointer for i386.

	* ld-i386/plt-lib.c: New file.
	* ld-i386/plt-main.out: Likewise.
	* ld-i386/plt-main1.c: Likewise.
	* ld-i386/plt-main1.rd: Likewise.
	* ld-i386/plt-main2.c: Likewise.
	* ld-i386/plt-main2.rd: Likewise.
	* ld-i386/plt-main3.c: Likewise.
	* ld-i386/plt-main3.rd: Likewise.
	* ld-i386/plt-main4.c: Likewise.
	* ld-i386/plt-main4.rd: Likewise.
	* ld-i386/plt-main5.c: Likewise.

	* ld-i386/i386.exp: Run plt-main tests.

12 files changed, 153 insertions, 0 deletions

diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index 30be98a..4c870b8 100644
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -263,3 +263,73 @@ run_dump_test "pr12627"
 run_dump_test "pr13302"
 run_dump_test "pr14215"
 run_dump_test "pr17057"
+
+# Must be Linux native with the C compiler
+if { [isnative]
+     && [istarget "i?86-*-linux*"]
+     && [which $CC] != 0 } {
+    run_cc_link_tests [list \
+	[list \
+	    "Build plt-lib.so" \
+	    "-shared" \
+	    "-fPIC" \
+	    { plt-lib.c } \
+	    {} \
+	    "libplt-lib.so" \
+	] \
+	[list \
+	    "Build libplt-main1.a" \
+	    "" \
+	    "-fPIC" \
+	    { plt-main1.c } \
+	    {{readelf {-Wr} plt-main1.rd}} \
+	    "libplt-main1.a" \
+	] \
+	[list \
+	    "Build libplt-main2.a" \
+	    "" \
+	    "-fPIC" \
+	    { plt-main2.c } \
+	    {{readelf {-Wr} plt-main2.rd}} \
+	    "libplt-main2.a" \
+	] \
+	[list \
+	    "Build libplt-main3.a" \
+	    "" \
+	    "-fPIC" \
+	    { plt-main3.c } \
+	    {{readelf {-Wr} plt-main3.rd}} \
+	    "libplt-main3.a" \
+	] \
+	[list \
+	    "Build libplt-main4.a" \
+	    "" \
+	    "-fPIC" \
+	    { plt-main4.c } \
+	    {{readelf {-Wr} plt-main4.rd}} \
+	    "libplt-main4.a" \
+	] \
+    ]
+
+    run_ld_link_exec_tests [] [list \
+	[list \
+	    "Run plt-main" \
+	    "tmpdir/plt-main1.o tmpdir/plt-main2.o tmpdir/plt-main3.o \
+	     tmpdir/plt-main4.o tmpdir/libplt-lib.so" \
+	    "" \
+	    { plt-main5.c } \
+	    "plt-main" \
+	    "plt-main.out" \
+	] \
+	[list \
+	    "Run plt-main with PIE" \
+	    "tmpdir/plt-main1.o tmpdir/plt-main2.o tmpdir/plt-main3.o \
+	     tmpdir/plt-main4.o tmpdir/libplt-lib.so -pie" \
+	    "" \
+	    { plt-main5.c } \
+	    "plt-main-pie" \
+	    "plt-main.out" \
+	    "-fPIC" \
+	] \
+    ]
+}
diff --git a/ld/testsuite/ld-i386/plt-lib.c b/ld/testsuite/ld-i386/plt-lib.c
new file mode 100644
index 0000000..5e64ccd
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-lib.c
@@ -0,0 +1,11 @@
+int
+foo (void)
+{
+  return 1;
+}
+
+int
+bar (void)
+{
+  return -1;
+}
diff --git a/ld/testsuite/ld-i386/plt-main.out b/ld/testsuite/ld-i386/plt-main.out
new file mode 100644
index 0000000..d86bac9
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main.out
@@ -0,0 +1 @@
+OK
diff --git a/ld/testsuite/ld-i386/plt-main1.c b/ld/testsuite/ld-i386/plt-main1.c
new file mode 100644
index 0000000..90bb966
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main1.c
@@ -0,0 +1,8 @@
+extern int bar(void);
+typedef int (*func_p) (void);
+
+func_p
+get_bar (void)
+{
+  return bar;
+}
diff --git a/ld/testsuite/ld-i386/plt-main1.rd b/ld/testsuite/ld-i386/plt-main1.rd
new file mode 100644
index 0000000..d27589e
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main1.rd
@@ -0,0 +1,3 @@
+#...
+[0-9a-f ]+R_386_GOT32 +0+ +bar
+#pass
diff --git a/ld/testsuite/ld-i386/plt-main2.c b/ld/testsuite/ld-i386/plt-main2.c
new file mode 100644
index 0000000..d76694e
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main2.c
@@ -0,0 +1,3 @@
+extern int foo(void);
+typedef int (*func_p) (void);
+func_p foo_ptr = foo;
diff --git a/ld/testsuite/ld-i386/plt-main2.rd b/ld/testsuite/ld-i386/plt-main2.rd
new file mode 100644
index 0000000..e815015
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main2.rd
@@ -0,0 +1,3 @@
+#...
+[0-9a-f ]+R_386_32 +0+ +foo
+#pass
diff --git a/ld/testsuite/ld-i386/plt-main3.c b/ld/testsuite/ld-i386/plt-main3.c
new file mode 100644
index 0000000..026e05f
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main3.c
@@ -0,0 +1,15 @@
+extern int bar(void);
+typedef int (*func_p) (void);
+extern func_p get_bar (void);
+
+void
+check_bar (void)
+{
+  func_p bar_ptr = get_bar ();
+  if (bar_ptr != bar)
+    __builtin_abort ();
+  if (bar_ptr() != -1)
+    __builtin_abort ();
+  if (bar() != -1)
+    __builtin_abort ();
+}
diff --git a/ld/testsuite/ld-i386/plt-main3.rd b/ld/testsuite/ld-i386/plt-main3.rd
new file mode 100644
index 0000000..7b78818
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main3.rd
@@ -0,0 +1,5 @@
+#...
+[0-9a-f ]+R_386_GOT32 +0+ +bar
+#...
+[0-9a-f ]+R_386_PLT32 +0+ +bar
+#pass
diff --git a/ld/testsuite/ld-i386/plt-main4.c b/ld/testsuite/ld-i386/plt-main4.c
new file mode 100644
index 0000000..992ba5f
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main4.c
@@ -0,0 +1,14 @@
+extern int foo(void);
+typedef int (*func_p) (void);
+extern func_p foo_ptr;
+
+void
+check_foo (void)
+{
+  if (foo_ptr != foo)
+    __builtin_abort ();
+  if (foo_ptr() != 1)
+    __builtin_abort ();
+  if (foo() != 1)
+    __builtin_abort ();
+}
diff --git a/ld/testsuite/ld-i386/plt-main4.rd b/ld/testsuite/ld-i386/plt-main4.rd
new file mode 100644
index 0000000..882a3ad
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main4.rd
@@ -0,0 +1,5 @@
+#...
+[0-9a-f ]+R_386_GOT32 +0+ +foo
+#...
+[0-9a-f ]+R_386_PLT32 +0+ +foo
+#pass
diff --git a/ld/testsuite/ld-i386/plt-main5.c b/ld/testsuite/ld-i386/plt-main5.c
new file mode 100644
index 0000000..97351a8
--- /dev/null
+++ b/ld/testsuite/ld-i386/plt-main5.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+extern void check_foo (void);
+extern void check_bar (void);
+
+int
+main (void)
+{
+  check_foo ();
+  check_bar ();
+
+  printf ("OK\n");
+
+  return 0;
+}