12 files changed, 213 insertions, 0 deletions
diff --git a/binutils-2.21/ld/testsuite/ld-gc/abi-note.d b/binutils-2.21/ld/testsuite/ld-gc/abi-note.d
new file mode 100644
index 0000000..aed0a8b
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/abi-note.d
@@ -0,0 +1,9 @@
+#name: --gc-sections with note section
+#ld: --gc-sections -e _start
+#readelf: -S --wide
+#target: *-*-linux*
+#notarget: *-*-*aout *-*-*oldld
+
+#...
+.* .note.ABI-tag[ 	]+NOTE.*
+#...
diff --git a/binutils-2.21/ld/testsuite/ld-gc/abi-note.s b/binutils-2.21/ld/testsuite/ld-gc/abi-note.s
new file mode 100644
index 0000000..22536c0
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/abi-note.s
@@ -0,0 +1,15 @@
+	.text
+	.global _start
+_start:
+	.long 1
+
+	.section ".note.ABI-tag", "a"
+	.p2align 2
+	.long 1f - 0f		/* name length */
+	.long 3f - 2f		/* data length */
+	.long  1		/* note type */
+0:	.asciz "GNU"		/* vendor name */
+1:	.p2align 2
+2:	.long 1
+	.long 2
+3:	.p2align 2		/* pad out section */
diff --git a/binutils-2.21/ld/testsuite/ld-gc/dummy.s b/binutils-2.21/ld/testsuite/ld-gc/dummy.s
new file mode 100644
index 0000000..403f980
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/dummy.s
@@ -0,0 +1 @@
+# Dummy
diff --git a/binutils-2.21/ld/testsuite/ld-gc/gc.c b/binutils-2.21/ld/testsuite/ld-gc/gc.c
new file mode 100644
index 0000000..3b0e655
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/gc.c
@@ -0,0 +1,41 @@
+int unused_var = 7;
+int used_var = 7;
+
+int
+unused_func (int v)
+{
+  return 3 * unused_var;
+}
+
+int
+__attribute__((noinline))
+used_func (int v)
+{
+  return 2 * used_var;
+}
+
+int
+main (void)
+{
+  return used_func (5);
+}
+
+void
+dummy_func (void)
+{
+  /* These are here in case the target prepends an underscore to
+     the start of function names.  They are inside a dummy function
+     so that they will appear at the end of gcc's assembler output,
+     after the definitions of main() and used_func(), rather than
+     at the beginning of the file.  */
+
+  __asm__(".ifndef main\n\
+.global main\n\
+.set main, _main\n\
+.endif");
+
+  __asm__(".ifndef used_func\n\
+.global used_func\n\
+.set used_func, _used_func\n\
+.endif");
+}
diff --git a/binutils-2.21/ld/testsuite/ld-gc/gc.exp b/binutils-2.21/ld/testsuite/ld-gc/gc.exp
new file mode 100644
index 0000000..7005442
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/gc.exp
@@ -0,0 +1,102 @@
+# Expect script for ld-gc tests
+#   Copyright 2008, 2009, 2010
+#   Free Software Foundation, Inc.
+#
+# This file is part of the GNU Binutils.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+# These tests require --gc-sections
+if ![check_gc_sections_available] {
+    return
+}
+
+set cflags "-ffunction-sections -fdata-sections"
+set objfile "tmpdir/gc.o"
+
+if { [is_remote host] || [which $CC] != 0 } {
+    ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/gc.c $objfile
+}
+
+proc test_gc { testname filename linker ldflags} {
+    global nm
+    global srcdir
+    global subdir
+    global nm_output
+    global objfile
+
+    if ![file readable $objfile ] {
+	untested $testname
+	return
+    }
+
+    set outfile "tmpdir/$filename"
+    set options "-L$srcdir/$subdir"
+    append options " " $ldflags " " [ld_simple_link_defsyms] " " $objfile
+
+    # SH64 targets needs an extra ld option for this test.
+    if [istarget sh64*-*-*] {
+	if [istarget sh64*l*-*-*] {
+	    set options "-mshlelf32 $options"
+	} else {
+	    set options "-mshelf32 $options"
+	}
+    }
+
+    if ![ld_simple_link $linker $outfile $options] {
+	fail $testname
+	return
+    }
+    if ![ld_nm $nm "" $outfile] {
+	unresolved $testname
+	return
+    }
+    if {![info exists nm_output(used_func)] \
+	    || ![info exists nm_output(used_var)]} {
+	send_log "used sections do not exist\n"
+	verbose "used sections do not exist"
+	fail $testname
+	return
+    }
+    #ppc64_elf_gc_mark_hook needs to be taught how to look through
+    #the .toc section to properly mark variable sections for gc.
+    setup_xfail "powerpc64*-*-*"
+    if {[info exists nm_output(unused_func)] \
+	    || [info exists nm_output(unused_var)]} {
+	send_log "unused section still here\n"
+	verbose "unused section still here"
+	fail $testname
+	return
+    }
+    pass $testname
+}
+
+test_gc "Check --gc-section" "gcexe" $ld "--gc-sections -e main"
+test_gc "Check --gc-section/-q" "gcrexe" $ld "--gc-sections -q -e main"
+test_gc "Check --gc-section/-r/-e" "gcrel" $ld "-r --gc-sections -e main"
+test_gc "Check --gc-section/-r/-u" "gcrel" $ld "-r --gc-sections -u used_func"
+
+run_dump_test "noent"
+run_dump_test "abi-note"
+run_dump_test "start"
+if { [is_remote host] || [which $CC] != 0 } {
+    if { [istarget "*-*-linux*"] } {
+	ld_compile "$CC -fPIC $CFLAGS $cflags" $srcdir/$subdir/pr11218-1.c tmpdir/pr11218-1.o
+	ld_simple_link $ld tmpdir/pr11218-1.so "-shared tmpdir/pr11218-1.o"
+ 	ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/pr11218-2.c tmpdir/pr11218-2.o
+	run_dump_test "pr11218"
+    }
+}
diff --git a/binutils-2.21/ld/testsuite/ld-gc/noent.d b/binutils-2.21/ld/testsuite/ld-gc/noent.d
new file mode 100644
index 0000000..1741a74
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/noent.d
@@ -0,0 +1,3 @@
+# name: --gc-sections -r without -e
+# ld: --gc-sections -r
+# error: gc-sections requires either an entry or an undefined symbol
diff --git a/binutils-2.21/ld/testsuite/ld-gc/noent.s b/binutils-2.21/ld/testsuite/ld-gc/noent.s
new file mode 100644
index 0000000..ea74bf4
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/noent.s
@@ -0,0 +1,4 @@
+	.text
+	.globl entry
+entry:
+	.long 0
diff --git a/binutils-2.21/ld/testsuite/ld-gc/pr11218-1.c b/binutils-2.21/ld/testsuite/ld-gc/pr11218-1.c
new file mode 100644
index 0000000..9cc79f0
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/pr11218-1.c
@@ -0,0 +1,5 @@
+extern void unresolved_detected_at_runtime_not_at_linktime(void);
+void foo_in_so(void)
+{
+   unresolved_detected_at_runtime_not_at_linktime();
+}
diff --git a/binutils-2.21/ld/testsuite/ld-gc/pr11218-2.c b/binutils-2.21/ld/testsuite/ld-gc/pr11218-2.c
new file mode 100644
index 0000000..2515bc6
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/pr11218-2.c
@@ -0,0 +1,13 @@
+extern void foo_in_so(void);
+
+void call_unresolved(void)
+{
+   unresolved_detected_at_runtime_not_at_linktime();
+}
+
+int main(int argc, char *argv[])
+{
+   foo_in_so();
+
+   return 0;
+}
diff --git a/binutils-2.21/ld/testsuite/ld-gc/pr11218.d b/binutils-2.21/ld/testsuite/ld-gc/pr11218.d
new file mode 100644
index 0000000..27019a8
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/pr11218.d
@@ -0,0 +1,5 @@
+# name: --gc-sections with shared library
+# source: dummy.s
+# ld: --gc-sections -e main tmpdir/pr11218-2.o tmpdir/pr11218-1.so
+# target: *-*-linux*
+# error: undefined reference to `unresolved_detected_at_runtime_not_at_linktime'
diff --git a/binutils-2.21/ld/testsuite/ld-gc/start.d b/binutils-2.21/ld/testsuite/ld-gc/start.d
new file mode 100644
index 0000000..80c43d9
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/start.d
@@ -0,0 +1,9 @@
+#name: --gc-sections with __start_
+#ld: --gc-sections -e _start
+#nm: -n
+#target: *-*-linux*
+#notarget: *-*-*aout *-*-*oldld
+
+#...
+[0-9a-f]+ A +__start__foo
+#...
diff --git a/binutils-2.21/ld/testsuite/ld-gc/start.s b/binutils-2.21/ld/testsuite/ld-gc/start.s
new file mode 100644
index 0000000..d9f1b2d
--- /dev/null
+++ b/binutils-2.21/ld/testsuite/ld-gc/start.s
@@ -0,0 +1,6 @@
+.globl _start
+_start:
+	.long __start__foo
+	.section	_foo,"aw",%progbits
+foo:
+	.long	1