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<title>change log for rtems (2011-07-27)</title>
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<font color='#bb2222'><strong>strauman</strong></font>
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<tr><td colspan='3' bgcolor='#dddddd'><pre>2011-07-27 Till Straumann <strauman@slac.stanford.edu>
* shared/start/start.S, shared/start/preload.S:
Make sure stack is 16-byte aligned and the TOS
is tagged with a NULL pointer (used as a terminator
when printing stack traces).
</pre></td></tr>
<tr><td width='1%'><a href="http://www.rtems.com/cgi-bin/viewcvs.cgi//rtems/c/src/lib/libbsp/powerpc/ChangeLog.diff?r1=text&tr1=1.265&r2=text&tr2=1.266&diff_format=h">M</a></td><td width='1%'>1.266</td><td width='100%'>c/src/lib/libbsp/powerpc/ChangeLog</td></tr>
<tr><td width='1%'><a href="http://www.rtems.com/cgi-bin/viewcvs.cgi//rtems/c/src/lib/libbsp/powerpc/shared/start/preload.S.diff?r1=text&tr1=1.2&r2=text&tr2=1.3&diff_format=h">M</a></td><td width='1%'>1.3</td><td width='100%'>c/src/lib/libbsp/powerpc/shared/start/preload.S</td></tr>
<tr><td width='1%'><a href="http://www.rtems.com/cgi-bin/viewcvs.cgi//rtems/c/src/lib/libbsp/powerpc/shared/start/start.S.diff?r1=text&tr1=1.28&r2=text&tr2=1.29&diff_format=h">M</a></td><td width='1%'>1.29</td><td width='100%'>c/src/lib/libbsp/powerpc/shared/start/start.S</td></tr>
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<font color='#006600'>diff -u rtems/c/src/lib/libbsp/powerpc/ChangeLog:1.265 rtems/c/src/lib/libbsp/powerpc/ChangeLog:1.266
--- rtems/c/src/lib/libbsp/powerpc/ChangeLog:1.265 Tue Jul 26 23:21:25 2011
+++ rtems/c/src/lib/libbsp/powerpc/ChangeLog Wed Jul 27 20:13:19 2011
</font><font color='#997700'>@@ -1,3 +1,10 @@
</font><font color='#000088'>+2011-07-27 Till Straumann <strauman@slac.stanford.edu>
+
+ * shared/start/start.S, shared/start/preload.S:
+ Make sure stack is 16-byte aligned and the TOS
+ is tagged with a NULL pointer (used as a terminator
+ when printing stack traces).
+
</font> 2011-07-26 Till Straumann <strauman@slac.stanford.edu>
* shared/irq/openpic_i8259_irq.c: silenced compiler warnings.
<font color='#006600'>diff -u rtems/c/src/lib/libbsp/powerpc/shared/start/preload.S:1.2 rtems/c/src/lib/libbsp/powerpc/shared/start/preload.S:1.3
--- rtems/c/src/lib/libbsp/powerpc/shared/start/preload.S:1.2 Sun Nov 29 22:32:24 2009
+++ rtems/c/src/lib/libbsp/powerpc/shared/start/preload.S Wed Jul 27 20:13:20 2011
</font><font color='#997700'>@@ -84,7 +84,7 @@
</font> * if DESTINATION_ADDR is not 0
*/
#define KERNELBASE 0x0
<font color='#880000'>-#define INITIAL_STACK 0x78 /* 8-byte aligned */
</font><font color='#000088'>+#define INITIAL_STACK 0x70 /* 16-byte aligned */
</font> #define CACHE_LINE_SIZE PPC_CACHE_ALIGNMENT<span style="background-color: #FF0000"> </span> /* autodetect doesn't work, see below */
#define ASSUME_RTEMS_INSTALLS_VECTORS /* assume we need not load vectors */
#define DONT_USE_R5_ENTRY /* always dynamically determine the address we're running from */
<font color='#997700'>@@ -211,6 +211,9 @@
</font>
/* setup initial stack for rtems early boot */
li r1,INITIAL_STACK
<font color='#000088'>+ /* tag TOS with a NULL pointer (for stack trace) */
+ li r0, 0
+ stw r0, 0(r1)
</font> /* disable the MMU and fire up rtems */
mfmsr r0
ori<span style="background-color: #FF0000"> </span> r0,r0,MSR_IR|MSR_DR|MSR_IP|MSR_ME
<font color='#006600'>diff -u rtems/c/src/lib/libbsp/powerpc/shared/start/start.S:1.28 rtems/c/src/lib/libbsp/powerpc/shared/start/start.S:1.29
--- rtems/c/src/lib/libbsp/powerpc/shared/start/start.S:1.28 Fri Jan 28 14:29:53 2011
+++ rtems/c/src/lib/libbsp/powerpc/shared/start/start.S Wed Jul 27 20:13:20 2011
</font><font color='#997700'>@@ -130,6 +130,12 @@
</font> li r0, (CPU_STACK_ALIGNMENT-1)
andc r1, r9, r0
/*
<font color='#000088'>+ * Tag TOS with a NULL (terminator for stack dump)
+ */
+ li r0, 0
+ stw r0, 0(r1)
+<span style="background-color: #FF0000"> </span>
+ /*
</font> * We are now in a environment that is totally independent from
* bootloader setup.
*/
</pre>
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