Fix OS_BreakPt when called from SVC mode

Detail:
  s/Middle - A mistake during the 32bit conversion process left OS_BreakPt attempting to use the PSR as the address of the register dump if the call came from SVC mode, most likely resulting in an abort.
Admin:
  Tested on Raspberry Pi
  Fixes issue reported on forums:
  https://www.riscosopen.org/forum/forums/11/topics/6308#posts-56649


Version 5.56. Tagged as 'Kernel-5_56'

VersionASM

@@ -11,13 +11,13 @@
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
                         GBLS    Module_ComponentPath
-Module_MajorVersion     SETS    "5.55"
-Module_Version          SETA    555
+Module_MajorVersion     SETS    "5.56"
+Module_Version          SETA    556
 Module_MinorVersion     SETS    ""
-Module_Date             SETS    "02 Aug 2016"
-Module_ApplicationDate  SETS    "02-Aug-16"
+Module_Date             SETS    "08 Aug 2016"
+Module_ApplicationDate  SETS    "08-Aug-16"
 Module_ComponentName    SETS    "Kernel"
 Module_ComponentPath    SETS    "castle/RiscOS/Sources/Kernel"
-Module_FullVersion      SETS    "5.55"
-Module_HelpVersion      SETS    "5.55 (02 Aug 2016)"
+Module_FullVersion      SETS    "5.56"
+Module_HelpVersion      SETS    "5.56 (08 Aug 2016)"
                         END

VersionNum

-/* (5.55)
+/* (5.56)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        5.55
+#define Module_MajorVersion_CMHG        5.56
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                02 Aug 2016
+#define Module_Date_CMHG                08 Aug 2016
 
-#define Module_MajorVersion             "5.55"
-#define Module_Version                  555
+#define Module_MajorVersion             "5.56"
+#define Module_Version                  556
 #define Module_MinorVersion             ""
-#define Module_Date                     "02 Aug 2016"
+#define Module_Date                     "08 Aug 2016"
 
-#define Module_ApplicationDate          "02-Aug-16"
+#define Module_ApplicationDate          "08-Aug-16"
 
 #define Module_ComponentName            "Kernel"
 #define Module_ComponentPath            "castle/RiscOS/Sources/Kernel"
 
-#define Module_FullVersion              "5.55"
-#define Module_HelpVersion              "5.55 (02 Aug 2016)"
-#define Module_LibraryVersionInfo       "5:55"
+#define Module_FullVersion              "5.56"
+#define Module_HelpVersion              "5.56 (08 Aug 2016)"
+#define Module_LibraryVersionInfo       "5:56"

s/Middle

@@ -301,7 +301,7 @@ SBRKPT ROUT
         B       %BT10
 
 ; Supervisor mode case
-02      MOV     r14, r12                ; supervisor mode. R14 in buffer dead
+02      MOV     r14, r10                ; supervisor mode. R14 in buffer dead
         LDMFD   sp!, {r10-r12}
         STMIA   r14, {r0-r12}
         STR     r13, [r14, #13*4]