Refactor the code logic to reduce code size for debug tip.

The original switch case statements does not generate space efficient size when optimization is disabled. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9221 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 33 insertions, 59 deletions

diff --git a/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/DebugLib.c b/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/DebugLib.c
index 339a002cd5..20f52f86bf 100644
--- a/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/DebugLib.c
+++ b/IntelFrameworkModulePkg/Library/PeiDxeDebugLibReportStatusCode/DebugLib.c
@@ -53,7 +53,6 @@ DebugPrint (
   BASE_LIST       BaseListMarker;

   CHAR8           *FormatString;

   BOOLEAN         Long;

-  BOOLEAN         Done;

 

   //

   // If Format is NULL, then ASSERT().

@@ -73,7 +72,7 @@ DebugPrint (
   // the following layout:

   //

   //         Buffer->|------------------------|

-  //                 |         Pading         | 4 bytes

+  //                 |         Padding        | 4 bytes

   //      DebugInfo->|------------------------|

   //                 |      EFI_DEBUG_INFO    | sizeof(EFI_DEBUG_INFO)

   // BaseListMarker->|------------------------|

@@ -99,7 +98,7 @@ DebugPrint (
   // Here we skip the first 4 bytes of Buffer, because we must ensure BaseListMarker is

   // 64-bit aligned, otherwise retrieving 64-bit parameter from BaseListMarker will cause

   // exception on IPF. Buffer starts at 64-bit aligned address, so skipping 4 types (sizeof(EFI_DEBUG_INFO))

-  // just makes addess of BaseListMarker, which follows DebugInfo, 64-bit aligned.

+  // just makes address of BaseListMarker, which follows DebugInfo, 64-bit aligned.

   //

   DebugInfo             = (EFI_DEBUG_INFO *)(Buffer) + 1;

   DebugInfo->ErrorLevel = (UINT32)ErrorLevel;

@@ -128,91 +127,66 @@ DebugPrint (
     //

     // Parse Flags and Width

     //

-    for (Done = FALSE; !Done; ) {

-      Format++;

-      switch (*Format) {

-      case '.': 

-      case '-': 

-      case '+': 

-      case ' ': 

-      case ',': 

-      case '0':

-      case '1':

-      case '2':

-      case '3':

-      case '4':

-      case '5':

-      case '6':

-      case '7':

-      case '8':

-      case '9':

+    for (Format++; TRUE; Format++) {

+      if (*Format == '.' || *Format == '-' || *Format == '+' || *Format == ' ') {

         //

         // These characters in format field are omitted.

         //

-        break;

-      case 'L':

-      case 'l': 

+        continue;

+      }

+      if (*Format >= '0' && *Format <= '9') {

+        //

+        // These characters in format field are omitted.

+        //

+        continue;

+      }

+      if (*Format == 'L' || *Format == 'l') {

         //

         // 'L" or "l" in format field means the number being printed is a UINT64

         //

         Long = TRUE;

-        break;

-      case '*':

+        continue;

+      }

+      if (*Format == '*') {

         //

         // '*' in format field means the precision of the field is specified by

         // a UINTN argument in the argument list.

         //

         BASE_ARG (BaseListMarker, UINTN) = VA_ARG (VaListMarker, UINTN);

-        break;

-      case '\0':

+        continue;

+      }

+      if (*Format == '\0') {

         //

         // Make no output if Format string terminates unexpectedly when

         // looking up for flag, width, precision and type. 

         //

         Format--;

-        //

-        // break skipped on purpose.

-        //

-      default:

-        //

-        // When valid argument type detected or format string terminates unexpectedly,

-        // the inner loop is done.

-        //

-        Done = TRUE;

-        break;

       }

-    } 

-        

+      //

+      // When valid argument type detected or format string terminates unexpectedly,

+      // the inner loop is done.

+      //

+      break;

+    }

+    

     //

     // Pack variable arguments into the storage area following EFI_DEBUG_INFO.

     //

-    switch (*Format) {

-    case 'p':

-      if (sizeof (VOID *) > 4) {

-        Long = TRUE;

-      }

-    case 'X':

-    case 'x':

-    case 'd':

+    if ((*Format == 'p') && (sizeof (VOID *) > 4)) {

+      Long = TRUE;

+    }

+    if (*Format == 'p' || *Format == 'X' || *Format == 'x' || *Format == 'd') {

       if (Long) {

         BASE_ARG (BaseListMarker, INT64) = VA_ARG (VaListMarker, INT64);

       } else {

         BASE_ARG (BaseListMarker, int) = VA_ARG (VaListMarker, int);

       }

-      break;

-    case 's':

-    case 'S':

-    case 'a':

-    case 'g':

-    case 't':

+    } else if (*Format == 's' || *Format == 'S' || *Format == 'a' || *Format == 'g' || *Format == 't') {

       BASE_ARG (BaseListMarker, VOID *) = VA_ARG (VaListMarker, VOID *);

-      break;

-    case 'c':

+    } else if (*Format == 'c') {

       BASE_ARG (BaseListMarker, UINTN) = VA_ARG (VaListMarker, UINTN);

-      break;

-    case 'r':

+    } else if (*Format == 'r') {

       BASE_ARG (BaseListMarker, RETURN_STATUS) = VA_ARG (VaListMarker, RETURN_STATUS);

-      break;

     }

 

     //