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2007-09-21 Patrick Mansfield <patmans@us.ibm.com> 

* spu/dirfuncs.c: New file, holds the opendir, closedir, readdir,
        rewinddir, seekdir and telldir implementations. These are
        grouped in one file so that we do not need a separate file for
        the struct dirent and DIR allocation code.
        * spu/jsre.h: Add JSRE_OPENDIR and other dir opcodes.
        * spu/Makefile.in: Add dirfuncs.o.
This commit is contained in:
Jeff Johnston 2007-09-21 20:40:52 +00:00
parent 63fbe1fd64
commit 79978d2076
4 changed files with 183 additions and 1 deletions
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9
libgloss/ChangeLog
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@ -1,3 +1,12 @@
2007-09-21 Patrick Mansfield <patmans@us.ibm.com>
* spu/dirfuncs.c: New file, holds the opendir, closedir, readdir,
rewinddir, seekdir and telldir implementations. These are
grouped in one file so that we do not need a separate file for
the struct dirent and DIR allocation code.
* spu/jsre.h: Add JSRE_OPENDIR and other dir opcodes.
* spu/Makefile.in: Add dirfuncs.o.
2007-08-13 Carlos O'Donell <carlos@codesourcery.com>
* arm/crt0.S: Remove '.set' for __stack, hardware_init_hook,

2
libgloss/spu/Makefile.in
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@ -55,7 +55,7 @@ OBJCOPY = `t='$(program_transform_name)'; echo objcopy | sed -e $$t`
# object files needed
OBJS = \
access.o chdir.o chmod.o chown.o close.o conv_stat.o dup.o \
access.o chdir.o chmod.o chown.o close.o conv_stat.o dirfuncs.o dup.o \
dup2.o exit.o fchdir.o fchmod.o fchown.o fdatasync.o fstat.o \
fsync.o ftruncate.o getcwd.o getpagesize.o getpid.o \
gettimeofday.o isatty.o kill.o lchown.o link.o lockf.o lseek.o \

167
libgloss/spu/dirfuncs.c Normal file
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@ -0,0 +1,167 @@
/*
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);
}

6
libgloss/spu/jsre.h
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@ -78,6 +78,12 @@ Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
#define JSRE_TRUNCATE 52
#define JSRE_MKSTEMP 53
#define JSRE_MKTEMP 54
#define JSRE_OPENDIR 55
#define JSRE_CLOSEDIR 56
#define JSRE_READDIR 57
#define JSRE_REWINDDIR 58
#define JSRE_SEEKDIR 59
#define JSRE_TELLDIR 60
struct jsre_stat {
unsigned int dev;