Fix OS_FindMemMapEntries

Detail:
  s/ChangeDyn - Since the introduction of the 16 byte CAM entry format, OS_FindMemMapEntries has contained a bug where requesting the details for an address which does not have an L2PT page allocated for it (e.g. a location in ROM) would result in a misaligned CAM entry pointer being generated, resulting in either a crash or incorrect data being returned
Admin:
  Tested on Raspberry Pi 2
  Fixes issue reported on forums:
  https://www.riscosopen.org/forum/forums/4/topics/6393


Version 5.57. Tagged as 'Kernel-5_57'

VersionASM

@@ -11,13 +11,13 @@
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
                         GBLS    Module_ComponentPath
-Module_MajorVersion     SETS    "5.56"
-Module_Version          SETA    556
+Module_MajorVersion     SETS    "5.57"
+Module_Version          SETA    557
 Module_MinorVersion     SETS    ""
-Module_Date             SETS    "08 Aug 2016"
-Module_ApplicationDate  SETS    "08-Aug-16"
+Module_Date             SETS    "18 Aug 2016"
+Module_ApplicationDate  SETS    "18-Aug-16"
 Module_ComponentName    SETS    "Kernel"
 Module_ComponentPath    SETS    "castle/RiscOS/Sources/Kernel"
-Module_FullVersion      SETS    "5.56"
-Module_HelpVersion      SETS    "5.56 (08 Aug 2016)"
+Module_FullVersion      SETS    "5.57"
+Module_HelpVersion      SETS    "5.57 (18 Aug 2016)"
                         END

VersionNum

-/* (5.56)
+/* (5.57)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        5.56
+#define Module_MajorVersion_CMHG        5.57
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                08 Aug 2016
+#define Module_Date_CMHG                18 Aug 2016
 
-#define Module_MajorVersion             "5.56"
-#define Module_Version                  556
+#define Module_MajorVersion             "5.57"
+#define Module_Version                  557
 #define Module_MinorVersion             ""
-#define Module_Date                     "08 Aug 2016"
+#define Module_Date                     "18 Aug 2016"
 
-#define Module_ApplicationDate          "08-Aug-16"
+#define Module_ApplicationDate          "18-Aug-16"
 
 #define Module_ComponentName            "Kernel"
 #define Module_ComponentPath            "castle/RiscOS/Sources/Kernel"
 
-#define Module_FullVersion              "5.56"
-#define Module_HelpVersion              "5.56 (08 Aug 2016)"
-#define Module_LibraryVersionInfo       "5:56"
+#define Module_FullVersion              "5.57"
+#define Module_HelpVersion              "5.57 (18 Aug 2016)"
+#define Module_LibraryVersionInfo       "5:57"

s/ChangeDyn

@@ -710,7 +710,7 @@ FindMemMapEntries_Code  ROUT
         MOV     r5, r8, LSR #12                 ; r5 = page offset to L2PT entry for log.addr
         LDR     r5, [r10, r5, LSL #2]           ; r5 = L2PT entry for L2PT entry for log.addr
         TST     r5, #3                          ; if page not there
-        SUBEQ   r10, r9, #CAM_EntrySizeLog2     ; then invalid page so go from last one
+        SUBEQ   r10, r9, #CAM_EntrySize         ; then invalid page so go from last one
         BEQ     %FT45
         LDR     r8, [r8]                        ; r8 = L2PT entry for log.addr
         MOV     r8, r8, LSR #12                 ; r8 = physaddr / 4K