Thanks for your reply. The variable "mVaListNull" I prefer to keep it as a module data even though there is only one source file in this DebugLib inf.
Thanks, Zhichao > -----Original Message----- > From: Leif Lindholm [mailto:leif.lindh...@linaro.org] > Sent: Tuesday, March 26, 2019 8:19 PM > To: Gao, Zhichao <zhichao....@intel.com> > Cc: edk2-devel@lists.01.org; Ard Biesheuvel <ard.biesheu...@linaro.org>; > Gao, Liming <liming....@intel.com>; Sean Brogan > <sean.bro...@microsoft.com>; Michael Turner > <michael.tur...@microsoft.com>; Bret Barkelew > <bret.barke...@microsoft.com> > Subject: Re: [PATCH V4 08/17] ArmPkg/SemiHostingDebugLib: Add new APIs > > Hi Zhichao, > > Apologies for delay in responding, due to holiday and stuff. > > On the whole this looks fine (one comment below), but I don't actually have > any platform on which to test this. > > Ard: maybe it's time to retire this component? > > On Thu, Mar 21, 2019 at 10:04:50PM +0800, Zhichao Gao wrote: > > 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....@intel.com> > > Cc: Leif Lindholm <leif.lindh...@linaro.org> > > Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> > > Cc: Liming Gao <liming....@intel.com> > > Cc: Sean Brogan <sean.bro...@microsoft.com> > > Cc: Michael Turner <michael.tur...@microsoft.com> > > Cc: Bret Barkelew <bret.barke...@microsoft.com> > > --- > > ArmPkg/Library/SemiHostingDebugLib/DebugLib.c | 106 > > ++++++++++++++++++++++++-- > > 1 file changed, 101 insertions(+), 5 deletions(-) > > > > diff --git a/ArmPkg/Library/SemiHostingDebugLib/DebugLib.c > > b/ArmPkg/Library/SemiHostingDebugLib/DebugLib.c > > index ec03edb774..a368dd43b8 100644 > > --- a/ArmPkg/Library/SemiHostingDebugLib/DebugLib.c > > +++ b/ArmPkg/Library/SemiHostingDebugLib/DebugLib.c > > @@ -1,7 +1,7 @@ > > /** @file > > UEFI Debug Library that uses PrintLib to send messages to STDERR. > > > > - Copyright (c) 2006 - 2007, Intel Corporation. All rights > > reserved.<BR> > > + Copyright (c) 2006 - 2019, Intel Corporation. All rights > > + reserved.<BR> > > Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> > > This program and the accompanying materials > > are licensed and made available under the terms and conditions of > > the BSD License @@ -27,6 +27,12 @@ // #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; > > I would prefer if this was marked STATIC. > > If you feel strongly otherwise, leave it as is. > Either way: > Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org> > > / > Leif > > > + > > /** > > > > Prints a debug message to the debug output device if the specified error > level is enabled. > > @@ -48,9 +54,41 @@ DebugPrint ( > > IN CONST CHAR8 *Format, > > ... > > ) > > +{ > > + 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 AsciiBuffer[MAX_DEBUG_MESSAGE_LENGTH]; > > - VA_LIST Marker; > > > > // > > // If Format is NULL, then ASSERT(). > > @@ -67,14 +105,72 @@ DebugPrint ( > > // > > // Convert the DEBUG() message to a Unicode String > > // > > - VA_START (Marker, Format); > > - AsciiVSPrint (AsciiBuffer, sizeof (AsciiBuffer), Format, Marker); > > - VA_END (Marker); > > + if (BaseListMarker == NULL) { > > + AsciiVSPrint (AsciiBuffer, sizeof (AsciiBuffer), Format, > > + VaListMarker); } else { > > + AsciiBSPrint (AsciiBuffer, sizeof (AsciiBuffer), Format, > > + BaseListMarker); } > > > > SemihostWriteString (AsciiBuffer); > > } > > > > > > +/** > > + 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. > > -- > > 2.16.2.windows.1 > > _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
