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authorBret Barkelew <Bret.Barkelew@microsoft.com>2019-03-14 17:03:43 +0800
committerLiming Gao <liming.gao@intel.com>2019-04-02 12:49:28 +0800
commit2fe5f2f52918b63023f0dcb80eb291f67d5e5912 (patch)
tree738f4802bd25efa216ca0d4fcd471a34a839931d /OvmfPkg
parent92c0bbd18b8be748f5e0c30d48168e5db94f0217 (diff)
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OvmfPkg/PlatformDebugLibIoPort: Add new APIs
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1395 Add new APIs' implementation (DebugVPrint, DebugBPrint) in the DebugLib instance. These APIs would expose print routines with VaList parameter and BaseList parameter. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Zhichao Gao <zhichao.gao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Liming Gao <liming.gao@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Michael Turner <Michael.Turner@microsoft.com> Cc: Bret Barkelew <Bret.Barkelew@microsoft.com> Acked-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg')
-rw-r--r--OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c106
1 files changed, 101 insertions, 5 deletions
diff --git a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
index 36cde54976..cda35faf66 100644
--- a/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
+++ b/OvmfPkg/Library/PlatformDebugLibIoPort/DebugLib.c
@@ -2,7 +2,7 @@
Base Debug library instance for QEMU debug port.
It uses PrintLib to send debug messages to a fixed I/O port.
- Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012, Red Hat, Inc.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -29,6 +29,12 @@
//
#define MAX_DEBUG_MESSAGE_LENGTH 0x100
+//
+// VA_LIST can not initialize to NULL for all compiler, so we use this to
+// indicate a null VA_LIST
+//
+VA_LIST mVaListNull;
+
/**
Prints a debug message to the debug output device if the specified error level is enabled.
@@ -52,8 +58,40 @@ DebugPrint (
...
)
{
+ VA_LIST Marker;
+
+ VA_START (Marker, Format);
+ DebugVPrint (ErrorLevel, Format, Marker);
+ VA_END (Marker);
+}
+
+
+/**
+ Prints a debug message to the debug output device if the specified
+ error level is enabled base on Null-terminated format string and a
+ VA_LIST argument list or a BASE_LIST argument list.
+
+ If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
+ GetDebugPrintErrorLevel (), then print the message specified by Format and
+ the associated variable argument list to the debug output device.
+
+ If Format is NULL, then ASSERT().
+
+ @param ErrorLevel The error level of the debug message.
+ @param Format Format string for the debug message to print.
+ @param VaListMarker VA_LIST marker for the variable argument list.
+ @param BaseListMarker BASE_LIST marker for the variable argument list.
+
+**/
+VOID
+DebugPrintMarker (
+ IN UINTN ErrorLevel,
+ IN CONST CHAR8 *Format,
+ IN VA_LIST VaListMarker,
+ IN BASE_LIST BaseListMarker
+ )
+{
CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
- VA_LIST Marker;
UINTN Length;
//
@@ -72,9 +110,11 @@ DebugPrint (
//
// Convert the DEBUG() message to an ASCII String
//
- VA_START (Marker, Format);
- Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);
- VA_END (Marker);
+ if (BaseListMarker == NULL) {
+ Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);
+ } else {
+ Length = AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);
+ }
//
// Send the print string to the debug I/O port
@@ -84,6 +124,62 @@ DebugPrint (
/**
+ Prints a debug message to the debug output device if the specified
+ error level is enabled.
+
+ If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
+ GetDebugPrintErrorLevel (), then print the message specified by Format and
+ the associated variable argument list to the debug output device.
+
+ If Format is NULL, then ASSERT().
+
+ @param ErrorLevel The error level of the debug message.
+ @param Format Format string for the debug message to print.
+ @param VaListMarker VA_LIST marker for the variable argument list.
+
+**/
+VOID
+EFIAPI
+DebugVPrint (
+ IN UINTN ErrorLevel,
+ IN CONST CHAR8 *Format,
+ IN VA_LIST VaListMarker
+ )
+{
+ DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);
+}
+
+
+/**
+ Prints a debug message to the debug output device if the specified
+ error level is enabled.
+ This function use BASE_LIST which would provide a more compatible
+ service than VA_LIST.
+
+ If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
+ GetDebugPrintErrorLevel (), then print the message specified by Format and
+ the associated variable argument list to the debug output device.
+
+ If Format is NULL, then ASSERT().
+
+ @param ErrorLevel The error level of the debug message.
+ @param Format Format string for the debug message to print.
+ @param BaseListMarker BASE_LIST marker for the variable argument list.
+
+**/
+VOID
+EFIAPI
+DebugBPrint (
+ IN UINTN ErrorLevel,
+ IN CONST CHAR8 *Format,
+ IN BASE_LIST BaseListMarker
+ )
+{
+ DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);
+}
+
+
+/**
Prints an assert message containing a filename, line number, and description.
This may be followed by a breakpoint or a dead loop.