--- /dev/null
+/*
+ Copyright 2007
+ International Business Machines Corporation,
+ Sony Computer Entertainment, Incorporated,
+ Toshiba 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 names of the copyright holders nor the names of their
+ 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.
+*/
+
+/*
+ * Put all of the dir functions in one file here, since it is not useful
+ * to use opendir without readdir, and then we can put the handling of the
+ * struct dirent here too.
+ */
+
+#include <stdint.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <errno.h>
+#include "jsre.h"
+
+/*
+ * The SPU DIR includes space for one dirent, and is 256 + 4 bytes in
+ * size, so keep this small.
+ */
+#define SPE_OPENDIR_MAX 4
+
+static DIR spe_dir[SPE_OPENDIR_MAX]; /* zero by default */
+
+typedef struct {
+ unsigned int name;
+ unsigned int pad0[3];
+} syscall_opendir_t;
+
+DIR *
+opendir (const char *name)
+{
+ DIR *dir;
+ int ppc_dir, i;
+ syscall_opendir_t sys;
+
+ sys.name = (unsigned int) name;
+ for (i = 0; i < SPE_OPENDIR_MAX; i++) {
+ if (!spe_dir[i].ppc_dir) {
+ dir = &spe_dir[i];
+ __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_OPENDIR, &sys);
+ /*
+ * Pull 64 bits out of the result.
+ */
+ dir->ppc_dir = ((uint64_t*)&sys)[0];
+ if (!dir->ppc_dir) {
+ dir = NULL;
+ }
+ return dir;
+ }
+ }
+
+ errno = EMFILE;
+ return NULL;
+}
+
+int
+closedir (DIR *dir)
+{
+ int rc, i;
+ uint64_t ppc_dir;
+
+ if (dir) {
+ /*
+ * Don't pass &dir->ppc_dir to __send_to_ppe, since it would be
+ * overwritten by the assist call.
+ */
+ ppc_dir = dir->ppc_dir;
+ rc = __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_CLOSEDIR, &ppc_dir);
+
+ /*
+ * Try to release the dir even if the closedir failed.
+ */
+ for (i = 0; i < SPE_OPENDIR_MAX; i++) {
+ if (spe_dir[i].ppc_dir == dir->ppc_dir) {
+ spe_dir[i].ppc_dir = 0;
+ }
+ }
+ } else {
+ /*
+ * Gracefully handle NULL, but not other invalid dir values.
+ */
+ rc = -1;
+ errno = EBADF;
+ }
+ return rc;
+}
+
+typedef struct {
+ uint64_t ppc_dir;
+ unsigned int pad0[2];
+ unsigned int dirent;
+ unsigned int pad1[3];
+} syscall_readdir_t;
+
+struct dirent *
+readdir (DIR *dir)
+{
+ syscall_readdir_t sys;
+
+ sys.ppc_dir = dir->ppc_dir;
+ sys.dirent = (unsigned int) &dir->dirent;
+ return (struct dirent *) __send_to_ppe (JSRE_POSIX1_SIGNALCODE,
+ JSRE_READDIR, &sys);
+}
+
+void
+rewinddir (DIR *dir)
+{
+ uint64_t ppc_dir = dir->ppc_dir;
+
+ __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_REWINDDIR, &ppc_dir);
+}
+
+typedef struct {
+ uint64_t ppc_dir;
+ unsigned int pad0[2];
+ unsigned int offset;
+ unsigned int pad1[3];
+} syscall_seekdir_t;
+
+void
+seekdir (DIR *dir, off_t offset)
+{
+ syscall_seekdir_t sys;
+
+ sys.ppc_dir = dir->ppc_dir;
+ sys.offset = offset;
+ __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_SEEKDIR, &sys);
+}
+
+off_t
+telldir (DIR *dir)
+{
+ uint64_t ppc_dir = dir->ppc_dir;
+
+ __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_TELLDIR, &ppc_dir);
+}
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