Hi,
this small patch adds support for determining the SPU timebase. Ok to Apply?
Ken
newlib/ChangeLog:
2008-09-01 Ken Werner <ken.werner@de.ibm.com>
* libc/machine/spu/include/spu_timer.h: spu_timebase function added.
* libc/machine/spu/spu_timebase.c: New file.
* libc/machine/spu/Makefile.am: Add new file.
Index: src/newlib/libc/machine/spu/Makefile.am
===================================================================
--- src.orig/newlib/libc/machine/spu/Makefile.am
+++ src/newlib/libc/machine/spu/Makefile.am
@@ -23,7 +23,7 @@ lib_a_SOURCES = setjmp.S assert.c cleare
vsiscanf.c vsniprintf.c vsnprintf.c vsprintf.c vsscanf.c \
stack_reg_va.S spu_clock_svcs.c spu_clock_stop.c spu_timer_flih.S \
spu_timer_slih.c spu_timer_slih_reg.c spu_timer_svcs.c \
- spu_timer_stop.c spu_timer_free.c
+ spu_timer_stop.c spu_timer_free.c spu_timebase.c
lib_a_CCASFLAGS = $(AM_CCASFLAGS)
lib_a_CFLAGS = $(AM_CFLAGS)
Index: src/newlib/libc/machine/spu/include/spu_timer.h
===================================================================
--- src.orig/newlib/libc/machine/spu/include/spu_timer.h
+++ src/newlib/libc/machine/spu/include/spu_timer.h
@@ -47,6 +47,7 @@ extern int spu_timer_alloc (int interval
extern int spu_timer_free (int id);
extern int spu_timer_start (int id);
extern int spu_timer_stop (int id);
+extern unsigned spu_timebase (void);
/* Interrupt services. */
extern void spu_slih_register (unsigned event_mask,
Index: src/newlib/libc/machine/spu/spu_timebase.c
===================================================================
--- /dev/null
+++ src/newlib/libc/machine/spu/spu_timebase.c
@@ -0,0 +1,51 @@
+/*
+(C) Copyright IBM Corp. 2008
+
+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 IBM 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 <spu_timer.h>
+#include <stdio.h>
+
+/* This function queries /proc/cpuinfo and returns the SPU time base in
+ Hertz. */
+unsigned int
+spu_timebase (void)
+{
+ FILE *f;
+ unsigned tb = 0;
+ char line[64];
+ if ((f = fopen ("/proc/cpuinfo", "r")))
+ {
+ while (fgets (line, sizeof (line), f))
+ if (sscanf (line, "timebase : %u", &tb))
+ break;
+ fclose (f);
+ }
+ return (tb);
+}
+