OvmfPkg/PlatformDebugLibIoPort: Add new APIs

[mirror_edk2.git] / OvmfPkg / Library / PlatformDebugLibIoPort / DebugLib.c

diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
index 36cde54976d8a78816044cc32c9c732ef180bc18..cda35faf661147180f3269b4dd84ecc2da084141 100644 (file)
--- a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
@@ -2,7 +2,7 @@
   Base Debug library instance for QEMU debug port.\r
   It uses PrintLib to send debug messages to a fixed I/O port.\r
 \r
-  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r
   Copyright (c) 2012, Red Hat, Inc.<BR>\r
   This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
@@ -29,6 +29,12 @@
 //\r
 #define MAX_DEBUG_MESSAGE_LENGTH  0x100\r
 \r
+//\r
+// VA_LIST can not initialize to NULL for all compiler, so we use this to\r
+// indicate a null VA_LIST\r
+//\r
+VA_LIST     mVaListNull;\r
+\r
 /**\r
   Prints a debug message to the debug output device if the specified error level is enabled.\r
 \r
@@ -51,9 +57,41 @@ DebugPrint (
   IN  CONST CHAR8  *Format,\r
   ...\r
   )\r
+{\r
+  VA_LIST         Marker;\r
+\r
+  VA_START (Marker, Format);\r
+  DebugVPrint (ErrorLevel, Format, Marker);\r
+  VA_END (Marker);\r
+}\r
+\r
+\r
+/**\r
+  Prints a debug message to the debug output device if the specified\r
+  error level is enabled base on Null-terminated format string and a\r
+  VA_LIST argument list or a BASE_LIST argument list.\r
+\r
+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r
+  GetDebugPrintErrorLevel (), then print the message specified by Format and\r
+  the associated variable argument list to the debug output device.\r
+\r
+  If Format is NULL, then ASSERT().\r
+\r
+  @param  ErrorLevel      The error level of the debug message.\r
+  @param  Format          Format string for the debug message to print.\r
+  @param  VaListMarker    VA_LIST marker for the variable argument list.\r
+  @param  BaseListMarker  BASE_LIST marker for the variable argument list.\r
+\r
+**/\r
+VOID\r
+DebugPrintMarker (\r
+  IN  UINTN         ErrorLevel,\r
+  IN  CONST CHAR8   *Format,\r
+  IN  VA_LIST       VaListMarker,\r
+  IN  BASE_LIST     BaseListMarker\r
+  )\r
 {\r
   CHAR8    Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r
-  VA_LIST  Marker;\r
   UINTN    Length;\r
 \r
   //\r
@@ -72,9 +110,11 @@ DebugPrint (
   //\r
   // Convert the DEBUG() message to an ASCII String\r
   //\r
-  VA_START (Marker, Format);\r
-  Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);\r
-  VA_END (Marker);\r
+  if (BaseListMarker == NULL) {\r
+    Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);\r
+  } else {\r
+    Length = AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);\r
+  }\r
 \r
   //\r
   // Send the print string to the debug I/O port\r
@@ -83,6 +123,62 @@ DebugPrint (
 }\r
 \r
 \r
+/**\r
+  Prints a debug message to the debug output device if the specified\r
+  error level is enabled.\r
+\r
+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r
+  GetDebugPrintErrorLevel (), then print the message specified by Format and\r
+  the associated variable argument list to the debug output device.\r
+\r
+  If Format is NULL, then ASSERT().\r
+\r
+  @param  ErrorLevel    The error level of the debug message.\r
+  @param  Format        Format string for the debug message to print.\r
+  @param  VaListMarker  VA_LIST marker for the variable argument list.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+DebugVPrint (\r
+  IN  UINTN         ErrorLevel,\r
+  IN  CONST CHAR8   *Format,\r
+  IN  VA_LIST       VaListMarker\r
+  )\r
+{\r
+  DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);\r
+}\r
+\r
+\r
+/**\r
+  Prints a debug message to the debug output device if the specified\r
+  error level is enabled.\r
+  This function use BASE_LIST which would provide a more compatible\r
+  service than VA_LIST.\r
+\r
+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r
+  GetDebugPrintErrorLevel (), then print the message specified by Format and\r
+  the associated variable argument list to the debug output device.\r
+\r
+  If Format is NULL, then ASSERT().\r
+\r
+  @param  ErrorLevel      The error level of the debug message.\r
+  @param  Format          Format string for the debug message to print.\r
+  @param  BaseListMarker  BASE_LIST marker for the variable argument list.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+DebugBPrint (\r
+  IN  UINTN         ErrorLevel,\r
+  IN  CONST CHAR8   *Format,\r
+  IN  BASE_LIST     BaseListMarker\r
+  )\r
+{\r
+  DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);\r
+}\r
+\r
+\r
 /**\r
   Prints an assert message containing a filename, line number, and description.\r
   This may be followed by a breakpoint or a dead loop.\r