[ESan] Add testsandbox/denis13/esan

Change-Id: Ia77ded09d2e6de62635d5c1c16fdb6ade70401c4

3 files changed, 219 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/esan/esan.exp b/gcc/testsuite/g++.dg/esan/esan.exp
new file mode 100644
index 00000000000..9052347ce8e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/esan/esan.exp
@@ -0,0 +1,34 @@
+# Copyright (C) 2012-2016 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC 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, or (at your option)
+# any later version.
+#
+# GCC 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 GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Load support procs.
+load_lib g++-dg.exp
+load_lib esan-dg.exp
+
+# Initialize `dg'.
+dg-init
+esan_init
+
+# Main loop.
+if [check_effective_target_fsanitize_esan] {
+  gcc-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] "" ""
+}
+
+# All done.
+esan_finish
+dg-finish
diff --git a/gcc/testsuite/g++.dg/esan/workingset-simple.C b/gcc/testsuite/g++.dg/esan/workingset-simple.C
new file mode 100644
index 00000000000..f38134ed46d
--- /dev/null
+++ b/gcc/testsuite/g++.dg/esan/workingset-simple.C
@@ -0,0 +1,29 @@
+// { dg-do run { target { x86_64-*-linux* } } }
+// { dg-options "-fsanitize=efficiency-working-set" }
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <assert.h>
+
+const int size = 0x1 << 25; // 520k cache lines
+const int line_size = 64;
+
+int main(int argc, char **argv) {
+  char *bufA = (char *)malloc(sizeof(char) * line_size);
+  char bufB[64];
+  char *bufC = (char *)mmap(0, size, PROT_READ | PROT_WRITE,
+                            MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+  bufA[0] = 0;
+  // This additional access to the same line should not increase the line
+  // count: but it's difficult to make a non-flaky test that measures the
+  // lines down to the ones digit so right now we're not really testing that.
+  // If we add a heap-only mode we may be able to be more precise.
+  bufA[1] = 0;
+  bufB[33] = 1;
+  for (int i = 0; i < size; i += line_size)
+    bufC[i] = 0;
+  free(bufA);
+  munmap(bufC, 0x4000);
+  return 0;
+}
diff --git a/gcc/testsuite/lib/esan-dg.exp b/gcc/testsuite/lib/esan-dg.exp
new file mode 100644
index 00000000000..e3b933d5335
--- /dev/null
+++ b/gcc/testsuite/lib/esan-dg.exp
@@ -0,0 +1,156 @@
+# Copyright (C) 2013-2016 Free Software Foundation, Inc.
+
+# 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 GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Return 1 if compilation with -fsanitize=efficiency-working-set is error-free for trivial
+# code, 0 otherwise.  Also set what to do by default here, depending on the
+# result of a runtime test.
+
+proc check_effective_target_fsanitize_esan {} {
+    global individual_timeout
+    global dg-do-what-default
+
+    if ![check_no_compiler_messages fsanitize_esan executable {
+	int main (void) { return 0; }
+    }] {
+        return 0
+    }
+
+    # Lower timeout value in case test does not terminate properly.
+    set individual_timeout 20
+    if [check_runtime_nocache esan_works {
+	int main () { return 0; }
+    }] {
+	set dg-do-what-default run
+    } else {
+	set dg-do-what-default link
+    }
+    unset individual_timeout
+
+    return 1
+}
+
+#
+# esan_link_flags -- compute library path and flags to find libesan.
+# (originally from g++.exp)
+#
+
+proc esan_link_flags { paths } {
+    global srcdir
+    global ld_library_path
+    global shlib_ext
+    global esan_saved_library_path
+
+    set gccpath ${paths}
+    set flags ""
+
+    set shlib_ext [get_shlib_extension]
+    set esan_saved_library_path $ld_library_path
+
+    if { $gccpath != "" } {
+      if { [file exists "${gccpath}/libsanitizer/esan/.libs/libesan.a"]
+	   || [file exists "${gccpath}/libsanitizer/esan/.libs/libesan.${shlib_ext}"] } {
+	  append flags " -B${gccpath}/libsanitizer/esan/ "
+	  append flags " -L${gccpath}/libsanitizer/esan/.libs "
+	  append ld_library_path ":${gccpath}/libsanitizer/esan/.libs"
+      }
+    } else {
+      global tool_root_dir
+
+      set libesan [lookfor_file ${tool_root_dir} libesan]
+      if { $libesan != "" } {
+	  append flags "-L${libesan} "
+	  append ld_library_path ":${libesan}"
+      }
+    }
+
+    set_ld_library_path_env_vars
+
+    return "$flags"
+}
+
+#
+# esan_init -- called at the start of each subdir of tests
+#
+
+proc esan_init { args } {
+    global TEST_ALWAYS_FLAGS
+    global ALWAYS_CXXFLAGS
+    global TOOL_OPTIONS
+    global esan_saved_TEST_ALWAYS_FLAGS
+    global esan_saved_ALWAYS_CXXFLAGS
+    global dg-do-what-default
+    global esan_saved_dg-do-what-default
+
+    set link_flags ""
+    if ![is_remote host] {
+	if [info exists TOOL_OPTIONS] {
+	    set link_flags "[esan_link_flags [get_multilibs ${TOOL_OPTIONS}]]"
+	} else {
+	    set link_flags "[esan_link_flags [get_multilibs]]"
+	}
+    }
+
+    if [info exists dg-do-what-default] {
+	set esan_saved_dg-do-what-default ${dg-do-what-default}
+    }
+    if [info exists TEST_ALWAYS_FLAGS] {
+	set esan_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
+    }
+    if [info exists ALWAYS_CXXFLAGS] {
+	set esan_saved_ALWAYS_CXXFLAGS $ALWAYS_CXXFLAGS
+	set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
+	set ALWAYS_CXXFLAGS [concat "{additional_flags=-fsanitize=efficiency-working-set -g}" $ALWAYS_CXXFLAGS]
+    } else {
+	if [info exists TEST_ALWAYS_FLAGS] {
+	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=efficiency-working-set -g $TEST_ALWAYS_FLAGS"
+	} else {
+	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=efficiency-working-set -g"
+	}
+    }
+}
+
+#
+# esan_finish -- called at the end of each subdir of tests
+#
+
+proc esan_finish { args } {
+    global TEST_ALWAYS_FLAGS
+    global esan_saved_TEST_ALWAYS_FLAGS
+    global esan_saved_ALWAYS_CXXFLAGS
+    global dg-do-what-default
+    global esan_saved_dg-do-what-default
+    global esan_saved_library_path
+    global ld_library_path
+
+    if [info exists esan_saved_ALWAYS_CXXFLAGS ] {
+	set ALWAYS_CXXFLAGS $esan_saved_ALWAYS_CXXFLAGS
+    } else {
+	if [info exists esan_saved_TEST_ALWAYS_FLAGS] {
+	    set TEST_ALWAYS_FLAGS $esan_saved_TEST_ALWAYS_FLAGS
+        } else {
+	    unset TEST_ALWAYS_FLAGS
+        }
+    }
+
+    if [info exists esan_saved_dg-do-what-default] {
+	set dg-do-what-default ${esan_saved_dg-do-what-default}
+    } else {
+	unset dg-do-what-default
+    }
+    set ld_library_path $esan_saved_library_path
+    set_ld_library_path_env_vars
+    clear_effective_target_cache
+}