[Bug 1956] New: Fix CPU_STACK_ALIGNMENT

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1956

           Summary: Fix CPU_STACK_ALIGNMENT
           Product: RTEMS
           Version: HEAD
          Platform: lm32
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: cpukit
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: seb at tmplab.org


(from Werner Almesberger)
The comments in cpukit/score/cpu/lm32/rtems/score/cpu.h state that
CPU_STACK_ALIGNMENT should either be 0 or >= CPU_ALIGNMENT. The
latter is 8, the former was 4.

I'm not sure if this fix has any real-life impact on M1 behaviour,
but I guess it can't hurt.

- Werner

Index: cpukit/score/cpu/lm32/rtems/score/cpu.h
===================================================================
RCS file: /usr1/CVS/rtems/cpukit/score/cpu/lm32/rtems/score/cpu.h,v
retrieving revision 1.14
diff -u -r1.14 cpu.h
--- cpukit/score/cpu/lm32/rtems/score/cpu.h    27 Sep 2011 09:17:02 -0000   
1.14
+++ cpukit/score/cpu/lm32/rtems/score/cpu.h    8 Nov 2011 18:27:45 -0000
@@ -695,7 +695,7 @@
  *
  *  XXX document implementation including references if appropriate
  */
-#define CPU_STACK_ALIGNMENT        4
+#define CPU_STACK_ALIGNMENT        0

 /*
  *  ISR handler macros

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