More OpenBSD cleanup (primarily string).

This patch removes the string/ and wchar/ directories.

Change-Id: Ia489904bc67047e4bc79acb1f3eec21aa3fe5f0d
diff --git a/libc/bionic/__memcmp16.cpp b/libc/bionic/__memcmp16.cpp
new file mode 100644
index 0000000..bee0df1
--- /dev/null
+++ b/libc/bionic/__memcmp16.cpp
@@ -0,0 +1,44 @@
+/*
+Copyright (c) 2013 Intel Corporation
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+    * this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+    * this list of conditions and the following disclaimer in the documentation
+    * and/or other materials provided with the distribution.
+
+    * Neither the name of Intel Corporation nor the names of its contributors
+    * may be used to endorse or promote products derived from this software
+    * without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stddef.h>
+
+// Unoptimized version of __memcmp16.
+int __memcmp16(const unsigned short *ptr1, const unsigned short *ptr2, size_t n) {
+
+  for (size_t i = 0; i < n; i++) {
+    if (*ptr1 != *ptr2) {
+      return *ptr1 - *ptr2;
+    }
+    ptr1++;
+    ptr2++;
+  }
+  return 0;
+}
diff --git a/libc/bionic/__strrchr_chk.cpp b/libc/bionic/__strrchr_chk.cpp
index 4037207..69198c0 100644
--- a/libc/bionic/__strrchr_chk.cpp
+++ b/libc/bionic/__strrchr_chk.cpp
@@ -1,4 +1,3 @@
-/*	$OpenBSD: rindex.c,v 1.6 2005/08/08 08:05:37 espie Exp $ */
 /*
  * Copyright (c) 1988 Regents of the University of California.
  * All rights reserved.
diff --git a/libc/bionic/flockfile.c b/libc/bionic/flockfile.cpp
similarity index 63%
rename from libc/bionic/flockfile.c
rename to libc/bionic/flockfile.cpp
index 368fb15..c60497d 100644
--- a/libc/bionic/flockfile.c
+++ b/libc/bionic/flockfile.cpp
@@ -26,50 +26,33 @@
  * SUCH DAMAGE.
  */
 
-/* implement flockfile(), ftrylockfile() and funlockfile()
- *
- * we can't use the OpenBSD implementation which uses kernel-specific
- * APIs not available on Linux.
- *
- * Instead, we use a pthread_mutex_t within the FILE* internal state.
- * See fileext.h for details.
- *
- * the behaviour, if fclose() is called while the corresponding
- * file is locked is totally undefined.
- */
-#include <stdio.h>
-#include <string.h>
 #include <errno.h>
+#include <stdio.h>
+
 #include "fileext.h"
 
+// We can't use the OpenBSD implementation which uses kernel-specific
+// APIs not available on Linux. Instead we use a pthread_mutex_t within
+// struct __sfileext (see fileext.h).
 
-void
-flockfile(FILE * fp)
-{
-    if (fp != NULL) {
-        _FLOCK_LOCK(fp);
-    }
+void flockfile(FILE* fp) {
+  if (fp != NULL) {
+    pthread_mutex_lock(&_FLOCK(fp));
+  }
 }
 
+int ftrylockfile(FILE* fp) {
+  // The specification for ftrylockfile() says it returns 0 on success,
+  // or non-zero on error. So return an errno code directly on error.
+  if (fp == NULL) {
+    return EINVAL;
+  }
 
-int
-ftrylockfile(FILE *fp)
-{
-    /* The specification for ftrylockfile() says it returns 0 on success,
-     * or non-zero on error. So return an errno code directly on error.
-     */
-    int  ret = EINVAL;
-
-    if (fp != NULL) {
-        ret = _FLOCK_TRYLOCK(fp);
-    }
-    return ret;
+  return pthread_mutex_trylock(&_FLOCK(fp));
 }
 
-void
-funlockfile(FILE * fp)
-{
-    if (fp != NULL) {
-        _FLOCK_UNLOCK(fp);
-    }
+void funlockfile(FILE* fp) {
+  if (fp != NULL) {
+    pthread_mutex_unlock(&_FLOCK(fp));
+  }
 }
diff --git a/libc/bionic/index.cpp b/libc/bionic/index.cpp
new file mode 100644
index 0000000..cc22d81
--- /dev/null
+++ b/libc/bionic/index.cpp
@@ -0,0 +1,35 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <string.h>
+
+char* index(const char* p, int ch) {
+  return __strchr_chk(p, ch, __BIONIC_FORTIFY_UNKNOWN_SIZE);
+}
diff --git a/libc/bionic/strchr.cpp b/libc/bionic/strchr.cpp
index 029fbd9..5bd3f19 100644
--- a/libc/bionic/strchr.cpp
+++ b/libc/bionic/strchr.cpp
@@ -30,6 +30,6 @@
 #undef _FORTIFY_SOURCE
 #include <string.h>
 
-extern "C" char* strchr(const char* p, int ch) {
+char* strchr(const char* p, int ch) {
   return __strchr_chk(p, ch, __BIONIC_FORTIFY_UNKNOWN_SIZE);
 }
diff --git a/libc/bionic/strrchr.cpp b/libc/bionic/strrchr.cpp
new file mode 100644
index 0000000..3fdb47c
--- /dev/null
+++ b/libc/bionic/strrchr.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <string.h>
+
+char* strrchr(const char* p, int ch) {
+  return __strrchr_chk(p, ch, __BIONIC_FORTIFY_UNKNOWN_SIZE);
+}