2007-05-23 Patrick Mansfield <patmans@us.ibm.com>

        * spu/syscalls.c: Change __send_to_ppe to return the result stored
        in stored in slot 0 of the data, rather than have each assisted
        call retrieve the value.
        * spu/jsre.h: Remove the now unused syscall_out_t.
        * spu/access.c: Use the __send_to_ppe result instead of the slot 0
        value, remove unused syscall_out_t variable.
        * spu/close.c: Ditto.
        * spu/dup.c: Ditto.
        * spu/fstat.c: Ditto.
        * spu/ftruncate.c: Ditto.
        * spu/gettimeofday.c: Ditto.
        * spu/lseek.c: Ditto.
        * spu/open.c: Ditto.
        * spu/read.c: Ditto.
        * spu/stat.c: Ditto.
        * spu/unlink.c: Ditto.
        * spu/write.c: Ditto.

14 files changed, 25 insertions, 79 deletions

diff --git a/libgloss/spu/access.c b/libgloss/spu/access.c
index 0b639a9..8b02316 100644
--- a/libgloss/spu/access.c
+++ b/libgloss/spu/access.c
@@ -35,13 +35,8 @@ int
 access (const char *pathname, int mode)
 {
         syscall_access_t sys;
-        syscall_out_t   *psys_out = ( syscall_out_t* )&sys;
 
         sys.pathname = (unsigned int) pathname;
         sys.mode = mode;
-
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_ACCESS, &sys);
-
-        return ( psys_out->rc);
+        return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_ACCESS, &sys);
 }
-
diff --git a/libgloss/spu/close.c b/libgloss/spu/close.c
index 77e3ce1..ea47d02 100644
--- a/libgloss/spu/close.c
+++ b/libgloss/spu/close.c
@@ -35,13 +35,8 @@ Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
 int
 close (int file)
 {
-        syscall_close_t sys ;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
+        syscall_close_t sys;
 
 	sys.file = file;
-
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_CLOSE, &sys);
-
-        return ( psys_out->rc);
+        return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_CLOSE, &sys);
 }
-
diff --git a/libgloss/spu/dup.c b/libgloss/spu/dup.c
index 3240a0d..2ff7870 100644
--- a/libgloss/spu/dup.c
+++ b/libgloss/spu/dup.c
@@ -35,12 +35,7 @@ int
 dup (int oldfd)
 {
         syscall_dup_t sys;
-        syscall_out_t   *psys_out = ( syscall_out_t* )&sys;
 
         sys.oldfd = oldfd;
-
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_DUP, &sys);
-
-        return ( psys_out->rc);
+        return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_DUP, &sys);
 }
-
diff --git a/libgloss/spu/fstat.c b/libgloss/spu/fstat.c
index cef2431..69316d4 100644
--- a/libgloss/spu/fstat.c
+++ b/libgloss/spu/fstat.c
@@ -37,13 +37,12 @@ int
 fstat (int file, struct stat *pstat)
 {
         syscall_fstat_t sys;
-        syscall_out_t   *psys_out = ( syscall_out_t* )&sys;
         jsre_stat_t pjstat;
+        int ret;
 
         sys.file = file;
         sys.ptr = ( unsigned int )&pjstat;
-
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_FSTAT, &sys);
+        ret = __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_FSTAT, &sys);
 
         pstat->st_dev = pjstat.dev;
         pstat->st_ino = pjstat.ino;
@@ -59,7 +58,5 @@ fstat (int file, struct stat *pstat)
         pstat->st_mtime = pjstat.mtime;
         pstat->st_ctime = pjstat.ctime;
 
-
-        return( psys_out->rc );
+        return ret;
 }
-
diff --git a/libgloss/spu/ftruncate.c b/libgloss/spu/ftruncate.c
index 487c70d..47a998f 100644
--- a/libgloss/spu/ftruncate.c
+++ b/libgloss/spu/ftruncate.c
@@ -35,13 +35,8 @@ int
 ftruncate (int file, off_t length)
 {
 	syscall_ftruncate_t sys;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
 
 	sys.file = file;
 	sys.length = length;
-
-	__send_to_ppe(JSRE_POSIX1_SIGNALCODE, JSRE_FTRUNCATE, &sys);
-
-	return ( psys_out->rc);
+	return __send_to_ppe(JSRE_POSIX1_SIGNALCODE, JSRE_FTRUNCATE, &sys);
 }
-
diff --git a/libgloss/spu/gettimeofday.c b/libgloss/spu/gettimeofday.c
index 91b7353..93051f6 100644
--- a/libgloss/spu/gettimeofday.c
+++ b/libgloss/spu/gettimeofday.c
@@ -38,12 +38,8 @@ int
 gettimeofday (struct timeval *tv, struct timezone *tz)
 {
 	syscall_gettimeofday_t sys;
-	syscall_out_t *psys_out = ( syscall_out_t* )&sys;
 
 	sys.tv = (unsigned int)tv;
 	sys.tz = (unsigned int)tz;
-
-	__send_to_ppe(JSRE_POSIX1_SIGNALCODE, JSRE_GETTIMEOFDAY, &sys);
-
-	return (psys_out->rc);
+	return __send_to_ppe(JSRE_POSIX1_SIGNALCODE, JSRE_GETTIMEOFDAY, &sys);
 }
diff --git a/libgloss/spu/jsre.h b/libgloss/spu/jsre.h
index 46f8ee5..f69cd49 100644
--- a/libgloss/spu/jsre.h
+++ b/libgloss/spu/jsre.h
@@ -165,13 +165,6 @@ typedef struct
         unsigned int    pad1[ 3 ];
 } syscall_stat_t;
 
-typedef struct
-{
-	unsigned int	rc;
-	unsigned int	pad0[ 2 ];
-	unsigned int	err;
-} syscall_out_t;
-
 typedef struct {
     unsigned int dev;
     unsigned int ino;
diff --git a/libgloss/spu/lseek.c b/libgloss/spu/lseek.c
index e4e1754..9ba372c 100644
--- a/libgloss/spu/lseek.c
+++ b/libgloss/spu/lseek.c
@@ -37,7 +37,6 @@ off_t
 lseek (int file, off_t offset, int whence)
 {
         syscall_lseek_t sys;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
 
 	sys.file = file;
 	sys.offset = offset;
@@ -54,8 +53,5 @@ lseek (int file, off_t offset, int whence)
 			break;
 	}
 
-	__send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_LSEEK, &sys);
-
-        return ( psys_out->rc);
+	return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_LSEEK, &sys);
 }
-
diff --git a/libgloss/spu/open.c b/libgloss/spu/open.c
index c6882bd..46afcab 100644
--- a/libgloss/spu/open.c
+++ b/libgloss/spu/open.c
@@ -37,8 +37,7 @@ Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
 int
 open (const char *filename, int flags, ...)
 {
-        syscall_open_t sys ;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
+        syscall_open_t sys;
         va_list ap;
 
         sys.pathname = ( unsigned int )filename;
@@ -70,8 +69,5 @@ open (const char *filename, int flags, ...)
         sys.mode = va_arg (ap, int);
         va_end (ap);
 
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_OPEN, &sys);
-
-        return ( psys_out->rc);
+        return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_OPEN, &sys);
 }
-
diff --git a/libgloss/spu/read.c b/libgloss/spu/read.c
index 95c25b3..1a75ae0 100644
--- a/libgloss/spu/read.c
+++ b/libgloss/spu/read.c
@@ -37,14 +37,9 @@ int
 read (int file, void *ptr, size_t len)
 {
         syscall_write_t sys;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
 
 	sys.file = file;
 	sys.ptr = ( unsigned int )ptr;
 	sys.len = len;
-
-	__send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_READ, &sys);
-
-        return ( psys_out->rc);
+	return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_READ, &sys);
 }
-
diff --git a/libgloss/spu/stat.c b/libgloss/spu/stat.c
index ec7ab6d..ad925c6 100644
--- a/libgloss/spu/stat.c
+++ b/libgloss/spu/stat.c
@@ -38,13 +38,12 @@ int
 stat (const char *pathname, struct stat *pstat)
 {
 	syscall_stat_t sys;
-	syscall_out_t   *psys_out = ( syscall_out_t* )&sys;
 	jsre_stat_t pjstat;
+	int ret;
 
 	sys.pathname = (unsigned int)pathname;
 	sys.ptr = ( unsigned int )&pjstat;
-
-	__send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_STAT, &sys);
+	ret = __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_STAT, &sys);
 
 	pstat->st_dev = pjstat.dev;
 	pstat->st_ino = pjstat.ino;
@@ -60,6 +59,5 @@ stat (const char *pathname, struct stat *pstat)
 	pstat->st_mtime = pjstat.mtime;
 	pstat->st_ctime = pjstat.ctime;
 
-	return( psys_out->rc );
+	return ret;
 }
-
diff --git a/libgloss/spu/syscalls.c b/libgloss/spu/syscalls.c
index e4509c0..f2f2928 100644
--- a/libgloss/spu/syscalls.c
+++ b/libgloss/spu/syscalls.c
@@ -32,7 +32,7 @@ Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
 #include <errno.h>
 #include "jsre.h"
 
-void
+int
 __send_to_ppe (unsigned int signalcode, unsigned int opcode, void *data)
 {
 
@@ -49,5 +49,10 @@ __send_to_ppe (unsigned int signalcode, unsigned int opcode, void *data)
         asm ("sync");
         f ();
         errno = ((unsigned int *) data)[3];
+
+        /*
+         * Return the rc code stored in slot 0.
+         */
+        return ((unsigned int *) data)[0];
 }
 
diff --git a/libgloss/spu/unlink.c b/libgloss/spu/unlink.c
index 47b02a6..4a7edef 100644
--- a/libgloss/spu/unlink.c
+++ b/libgloss/spu/unlink.c
@@ -35,13 +35,8 @@ Author: Andreas Neukoetter (ti95neuk@de.ibm.com)
 int
 unlink (const char *pathname)
 {
-        syscall_unlink_t sys ;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
+        syscall_unlink_t sys;
 
 	sys.pathname = ( unsigned int )pathname;
-
-        __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_UNLINK, &sys);
-
-        return ( psys_out->rc);
+        return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_UNLINK, &sys);
 }
-
diff --git a/libgloss/spu/write.c b/libgloss/spu/write.c
index eec559e..c966342 100644
--- a/libgloss/spu/write.c
+++ b/libgloss/spu/write.c
@@ -37,14 +37,9 @@ int
 write (int file, const void *ptr, size_t len)
 {
         syscall_write_t sys;
-	syscall_out_t	*psys_out = ( syscall_out_t* )&sys;
 
 	sys.file = file;
 	sys.ptr = ( unsigned int )ptr;
 	sys.len = len;
-
-	__send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_WRITE, &sys);
-
-        return ( psys_out->rc);
+	return __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_WRITE, &sys);
 }
-