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-rw-r--r--REORG.TODO/benchtests/bench-strcpy_chk.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/REORG.TODO/benchtests/bench-strcpy_chk.c b/REORG.TODO/benchtests/bench-strcpy_chk.c
new file mode 100644
index 0000000000..168e36768f
--- /dev/null
+++ b/REORG.TODO/benchtests/bench-strcpy_chk.c
@@ -0,0 +1,244 @@
+/* Measure __strcpy_chk functions.
+ Copyright (C) 2013-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef STRCPY_RESULT
+# define STRCPY_RESULT(dst, len) dst
+# define TEST_MAIN
+# define TEST_NAME "strcpy_chk"
+# include "bench-string.h"
+
+/* This test case implicitly tests the availability of the __chk_fail
+ symbol, which is part of the public ABI and may be used
+ externally. */
+extern void __attribute__ ((noreturn)) __chk_fail (void);
+char *simple_strcpy_chk (char *, const char *, size_t);
+extern char *normal_strcpy (char *, const char *, size_t)
+ __asm ("strcpy");
+extern char *__strcpy_chk (char *, const char *, size_t);
+
+IMPL (simple_strcpy_chk, 0)
+IMPL (normal_strcpy, 1)
+IMPL (__strcpy_chk, 2)
+
+char *
+simple_strcpy_chk (char *dst, const char *src, size_t len)
+{
+ char *ret = dst;
+ if (! len)
+ __chk_fail ();
+ while ((*dst++ = *src++) != '\0')
+ if (--len == 0)
+ __chk_fail ();
+ return ret;
+}
+#endif
+
+#include <fcntl.h>
+#include <paths.h>
+#include <setjmp.h>
+#include <signal.h>
+
+#include <support/support.h>
+
+volatile int chk_fail_ok;
+jmp_buf chk_fail_buf;
+
+static void
+handler (int sig)
+{
+ if (chk_fail_ok)
+ {
+ chk_fail_ok = 0;
+ longjmp (chk_fail_buf, 1);
+ }
+ else
+ _exit (127);
+}
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src,
+ size_t len, size_t dlen)
+{
+ char *res;
+ size_t i, iters = INNER_LOOP_ITERS;
+ timing_t start, stop, cur;
+
+ if (dlen <= len)
+ {
+ if (impl->test == 1)
+ return;
+
+ chk_fail_ok = 1;
+ if (setjmp (chk_fail_buf) == 0)
+ {
+ res = CALL (impl, dst, src, dlen);
+ printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
+ impl->name, len, dlen);
+ chk_fail_ok = 0;
+ ret = 1;
+ }
+ return;
+ }
+ else
+ res = CALL (impl, dst, src, dlen);
+
+ if (res != STRCPY_RESULT (dst, len))
+ {
+ printf ("Wrong result in function %s %p %p\n", impl->name,
+ res, STRCPY_RESULT (dst, len));
+ ret = 1;
+ return;
+ }
+
+ if (strcmp (dst, src) != 0)
+ {
+ printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
+ impl->name, dst, src);
+ ret = 1;
+ return;
+ }
+
+ TIMING_NOW (start);
+ for (i = 0; i < iters; ++i)
+ {
+ CALL (impl, dst, src, dlen);
+ }
+ TIMING_NOW (stop);
+
+ TIMING_DIFF (cur, start, stop);
+
+ TIMING_PRINT_MEAN ((double) cur, (double) iters);
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
+{
+ size_t i;
+ char *s1, *s2;
+
+ align1 &= 7;
+ if (align1 + len >= page_size)
+ return;
+
+ align2 &= 7;
+ if (align2 + len >= page_size)
+ return;
+
+ s1 = (char *) buf1 + align1;
+ s2 = (char *) buf2 + align2;
+
+ for (i = 0; i < len; i++)
+ s1[i] = 32 + 23 * i % (max_char - 32);
+ s1[len] = 0;
+
+ if (dlen > len)
+ printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+ FOR_EACH_IMPL (impl, 0)
+ do_one_test (impl, s2, s1, len, dlen);
+
+ if (dlen > len)
+ putchar ('\n');
+}
+
+static int
+test_main (void)
+{
+ size_t i;
+
+ set_fortify_handler (handler);
+
+ test_init ();
+
+ printf ("%23s", "");
+ FOR_EACH_IMPL (impl, 0)
+ printf ("\t%s", impl->name);
+ putchar ('\n');
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i + 1, 127);
+ do_test (0, 0, i, i + 1, 255);
+ do_test (0, i, i, i + 1, 127);
+ do_test (i, 0, i, i + 1, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) + 1, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
+ do_test (i, i, (8 << i), (8 << i) + 1, 127);
+ do_test (i, i, (8 << i), (8 << i) + 1, 255);
+ }
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i + 256, 127);
+ do_test (0, 0, i, i + 256, 255);
+ do_test (0, i, i, i + 256, 127);
+ do_test (i, 0, i, i + 256, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) + 256, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
+ do_test (i, i, (8 << i), (8 << i) + 256, 127);
+ do_test (i, i, (8 << i), (8 << i) + 256, 255);
+ }
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i, 127);
+ do_test (0, 0, i, i + 2, 255);
+ do_test (0, i, i, i + 3, 127);
+ do_test (i, 0, i, i + 4, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) - 15, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
+ do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
+ do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>
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