Adding a command to show how symbols work in EFI

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10029 6f19259b-4bc3-4df7-8a09-765794883524

BeagleBoardPkg/Library/EblCmdLib/EblCmdLib.c

@@ -1,7 +1,7 @@
 /** @file
   Add custom commands for BeagleBoard development.
 
-  Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+  Copyright (c) 2008-2010, Apple Inc. All rights reserved.
   
   All rights reserved. This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -26,13 +26,81 @@
 #include <Library/PcdLib.h>
 #include <Library/EfiFileLib.h>
 #include <Library/ArmDisassemblerLib.h>
+#include <Library/PeCoffGetEntryPointLib.h>
 
-//PcdEmbeddedFdBaseAddress
+#include <Guid/DebugImageInfoTable.h>
+#include <Protocol/DebugSupport.h>
+#include <Protocol/LoadedImage.h>
 
 /**
-  Fill Me In
+  Simple arm disassembler via a library
 
-  Argv[0] - "%CommandName%"
+  Argv[0] - symboltable
+  Argv[1] - Optional qoted format string 
+  Argv[2] - Optional flag
+
+  @param  Argc   Number of command arguments in Argv
+  @param  Argv   Array of strings that represent the parsed command line. 
+                 Argv[0] is the comamnd name
+
+  @return EFI_SUCCESS
+
+**/
+EFI_STATUS
+EblSymbolTable (
+  IN UINTN  Argc,
+  IN CHAR8  **Argv
+  )
+{
+  EFI_STATUS                        Status;
+  EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *DebugImageTableHeader = NULL;
+  EFI_DEBUG_IMAGE_INFO              *DebugTable;
+  UINTN                             Entry;
+  CHAR8                             *Format;
+  CHAR8                             *Pdb;
+  UINT32                            PeCoffSizeOfHeaders;
+  UINT32                            ImageBase;
+  BOOLEAN                           Elf;
+  
+  // Need to add lots of error checking on the passed in string
+  Format = (Argc > 1) ? Argv[1] : "load /a /ni /np %a & 0x%x\n";
+  Elf = (Argc > 2) ? FALSE : TRUE;
+  
+  Status = EfiGetSystemConfigurationTable (&gEfiDebugImageInfoTableGuid, (VOID **)&DebugImageTableHeader);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  
+  DebugTable = DebugImageTableHeader->EfiDebugImageInfoTable;
+  if (DebugTable == NULL) {
+    return EFI_SUCCESS;
+  }
+
+  for (Entry = 0; Entry < DebugImageTableHeader->TableSize; Entry++, DebugTable++) {
+    if (DebugTable->NormalImage != NULL) {
+      if ((DebugTable->NormalImage->ImageInfoType == EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL) && (DebugTable->NormalImage->LoadedImageProtocolInstance != NULL)) {
+        ImageBase = (UINT32)DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase;
+        PeCoffSizeOfHeaders = PeCoffGetSizeOfHeaders ((VOID *)(UINTN)ImageBase);
+        Pdb = PeCoffLoaderGetPdbPointer (DebugTable->NormalImage->LoadedImageProtocolInstance->ImageBase);
+        if (Elf) {
+          // ELF and Mach-O images don't include the header so the linked address does not include header
+          ImageBase += PeCoffSizeOfHeaders;
+        } 
+        AsciiPrint (Format, Pdb, ImageBase);
+      }
+    }  
+  }
+
+  return EFI_SUCCESS;
+}
+
+
+/**
+  Simple arm disassembler via a library
+
+  Argv[0] - disasm
+  Argv[1] - Address to start disassembling from
+  ARgv[2] - Number of instructions to disassembly (optional)
 
   @param  Argc   Number of command arguments in Argv
   @param  Argv   Array of strings that represent the parsed command line. 
@@ -80,6 +148,12 @@ GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mLibCmdTemplate[] =
     " disassemble count instructions",
     NULL,
     EblDisassembler
+  },
+  {
+    "symboltable [\"format string\"] [TRUE]",
+    " show symbol table commands for debugger",
+    NULL,
+    EblSymbolTable
   }
 };
 

BeagleBoardPkg/Library/EblCmdLib/EblCmdLib.inf

@@ -43,7 +43,9 @@
   ArmDisassemblerLib
   
 [Protocols]
+ gEfiDebugSupportProtocolGuid
+ gEfiLoadedImageProtocolGuid
   
 [Guids]
+ gEfiDebugImageInfoTableGuid
  
-[Pcd]