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.

ld/testsuite/ChangeLog

@@ -1,3 +1,19 @@
+2014-11-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* 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.
+
 2014-11-21  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* ld-x86-64/x86-64.exp: Run plt-main test with -pie.

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" \
+	] \
+    ]
+}

ld/testsuite/ld-i386/plt-lib.c

@@ -0,0 +1,11 @@
+int
+foo (void)
+{
+  return 1;
+}
+
+int
+bar (void)
+{
+  return -1;
+}

ld/testsuite/ld-i386/plt-main.out

@@ -0,0 +1 @@
+OK

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;
+}

ld/testsuite/ld-i386/plt-main1.rd

@@ -0,0 +1,3 @@
+#...
+[0-9a-f ]+R_386_GOT32 +0+ +bar
+#pass

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;

ld/testsuite/ld-i386/plt-main2.rd

@@ -0,0 +1,3 @@
+#...
+[0-9a-f ]+R_386_32 +0+ +foo
+#pass

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 ();
+}

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

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 ();
+}

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

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;
+}