Hi Nate, Declaring all the local variables at the top of the function is really a coding style recommendation documented in the EDK II C Coding Style Specification. End of Section 5.4.1.1. Declaring local in other scopes is strongly discouraged.
https://tianocore-docs.github.io/edk2-CCodingStandardsSpecification/draft/5_source_files/54_code_file_structure.html#54-code-file-structure Block (local) Scope Formal parameters in function definitions and data defined within compound statements have block scope. Any group of statements that are encompassed within a pair of braces, { }, is a compound statement. The body of a function is also a compound statement. Compound statements can be nested, with each creating a new scope. Data declarations may follow the opening brace of a compound statement, regardless of nesting depth, and before any code generating statements have been entered. Other than at the outermost block of a function body, this type of declaration is strongly discouraged. This specific change here is in a windows specific file and improving readability of the windows specific version checks in #if statements warrants an exception. Mike > -----Original Message----- > From: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com> > Sent: Tuesday, September 26, 2023 1:51 PM > To: Kinney, Michael D <michael.d.kin...@intel.com>; > devel@edk2.groups.io > Cc: Andrew Fish <af...@apple.com>; Ni, Ray <ray...@intel.com>; Chiu, > Chasel <chasel.c...@intel.com> > Subject: RE: [PATCH v1] EmulatorPkg: Fix Terminal Issues > > Looks like it compiles fine in VS2015, and we just removed the > tools_def entries for every VC++ version older than that. And C99 has > been in gcc for a very long time and clang forever. So perhaps we can > start using C99 style variable declarations finally? > > Thanks, > Nate > > -----Original Message----- > From: Desimone, Nathaniel L > Sent: Tuesday, September 26, 2023 1:39 PM > To: Kinney, Michael D <michael.d.kin...@intel.com>; > devel@edk2.groups.io > Cc: Andrew Fish <af...@apple.com>; Ni, Ray <ray...@intel.com>; Chiu, > Chasel <chasel.c...@intel.com> > Subject: RE: [PATCH v1] EmulatorPkg: Fix Terminal Issues > > Oh, never mind, I see you are suggesting a C99 style variable > declaration. Do we need to worry about old compiler that want all > variable declarations at the top still? > > Thanks, > Nate > > -----Original Message----- > From: Desimone, Nathaniel L > Sent: Tuesday, September 26, 2023 1:38 PM > To: Kinney, Michael D <michael.d.kin...@intel.com>; > devel@edk2.groups.io > Cc: Andrew Fish <af...@apple.com>; Ni, Ray <ray...@intel.com>; Chiu, > Chasel <chasel.c...@intel.com> > Subject: RE: [PATCH v1] EmulatorPkg: Fix Terminal Issues > > Hi Mike, > > Unfortunately, that change will generate the following warning on > GCC4.6+ > > warning: variable "Success" set but not used [-Wunused-but-set- > variable] > > Hence why I wrote it that way. Let me know if you would like me to > make a different change before committing. > > Thanks, > Nate > > -----Original Message----- > From: Kinney, Michael D <michael.d.kin...@intel.com> > Sent: Tuesday, September 26, 2023 1:03 PM > To: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com>; > devel@edk2.groups.io > Cc: Andrew Fish <af...@apple.com>; Ni, Ray <ray...@intel.com>; Chiu, > Chasel <chasel.c...@intel.com>; Kinney, Michael D > <michael.d.kin...@intel.com> > Subject: RE: [PATCH v1] EmulatorPkg: Fix Terminal Issues > > Thanks Nate! > > I have noticed this issue for a while. > > One comment below. With that update: > > Reviewed-by: Michael D Kinney <michael.d.kin...@intel.com> > > Mike > > > -----Original Message----- > > From: Desimone, Nathaniel L <nathaniel.l.desim...@intel.com> > > Sent: Tuesday, September 26, 2023 11:36 AM > > To: devel@edk2.groups.io > > Cc: Andrew Fish <af...@apple.com>; Ni, Ray <ray...@intel.com>; > Kinney, > > Michael D <michael.d.kin...@intel.com>; Chiu, Chasel > > <chasel.c...@intel.com> > > Subject: [PATCH v1] EmulatorPkg: Fix Terminal Issues > > > > After running EmulatorPkg, one will notice that their terminal acts > > strangely. This is caused by the EmulatorPkg Host changing the > > terminal mode and not restoring the original mode, which is now > fixed. > > > > Cc: Andrew Fish <af...@apple.com> > > Cc: Ray Ni <ray...@intel.com> > > Cc: Michael D Kinney <michael.d.kin...@intel.com> > > Cc: Chasel Chiu <chasel.c...@intel.com> > > Signed-off-by: Nate DeSimone <nathaniel.l.desim...@intel.com> > > --- > > EmulatorPkg/Unix/Host/EmuThunk.c | 16 ++++++++++++- > > EmulatorPkg/Win/Host/WinThunk.c | 40 > > +++++++++++++++++++++++++++++++- > > 2 files changed, 54 insertions(+), 2 deletions(-) > > > > diff --git a/EmulatorPkg/Unix/Host/EmuThunk.c > > b/EmulatorPkg/Unix/Host/EmuThunk.c > > index 6422f056a6..e6879db650 100644 > > --- a/EmulatorPkg/Unix/Host/EmuThunk.c > > +++ b/EmulatorPkg/Unix/Host/EmuThunk.c > > @@ -9,7 +9,7 @@ > > it may cause the table to be initialized with the members at the > > end being > > set to zero. This is bad as jumping to zero will crash. > > > > -Copyright (c) 2004 - 2019, Intel Corporation. All rights > > reserved.<BR> > > +Copyright (c) 2004 - 2023, Intel Corporation. All rights > > reserved.<BR> > > Portions copyright (c) 2008 - 2011, Apple Inc. All rights > > reserved.<BR> > > SPDX-License-Identifier: BSD-2-Clause-Patent > > > > @@ -34,6 +34,9 @@ UINTN settimer_callback = 0; > > > > BOOLEAN gEmulatorInterruptEnabled = FALSE; > > > > +STATIC BOOLEAN mEmulatorStdInConfigured = FALSE; STATIC struct > > +termios mOldTty; > > + > > UINTN > > SecWriteStdErr ( > > IN UINT8 *Buffer, > > @@ -58,8 +61,15 @@ SecConfigStdIn ( > > // Need to turn off line buffering, ECHO, and make it unbuffered. > > // > > tcgetattr (STDIN_FILENO, &tty); > > + if (!mEmulatorStdInConfigured) { > > + // > > + // Save the original state of the TTY so it can be restored on > > exit > > + // > > + CopyMem (&mOldTty, &tty, sizeof (struct termios)); } > > tty.c_lflag &= ~(ICANON | ECHO); > > tcsetattr (STDIN_FILENO, TCSANOW, &tty); > > + mEmulatorStdInConfigured = TRUE; > > > > // setvbuf (STDIN_FILENO, NULL, _IONBF, 0); > > > > @@ -338,6 +348,10 @@ SecExit ( > > UINTN Status > > ) > > { > > + // Reset the TTY back to its original state if > > + (mEmulatorStdInConfigured) { > > + tcsetattr (STDIN_FILENO, TCSANOW, &mOldTty); } > > exit (Status); > > } > > > > diff --git a/EmulatorPkg/Win/Host/WinThunk.c > > b/EmulatorPkg/Win/Host/WinThunk.c index 008e5755db..90a6da2ece > 100644 > > --- a/EmulatorPkg/Win/Host/WinThunk.c > > +++ b/EmulatorPkg/Win/Host/WinThunk.c > > @@ -1,6 +1,6 @@ > > /**@file > > > > -Copyright (c) 2006 - 2018, Intel Corporation. All rights > > reserved.<BR> > > +Copyright (c) 2006 - 2023, Intel Corporation. All rights > > reserved.<BR> > > SPDX-License-Identifier: BSD-2-Clause-Patent > > > > Module Name: > > @@ -30,6 +30,12 @@ Abstract: > > > > #include "WinHost.h" > > > > +STATIC BOOLEAN mEmulatorStdInConfigured = FALSE; STATIC DWORD > > +mOldStdInMode; #if defined (NTDDI_VERSION) && defined > > +(NTDDI_WIN10_TH2) && > > (NTDDI_VERSION > NTDDI_WIN10_TH2) > > + STATIC DWORD mOldStdOutMode; > > +#endif > > + > > UINTN > > SecWriteStdErr ( > > IN UINT8 *Buffer, > > @@ -61,6 +67,12 @@ SecConfigStdIn ( > > > > Success = GetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), > &Mode); > > if (Success) { > > + if (!mEmulatorStdInConfigured) { > > + // > > + // Save the original state of the console so it can be > restored > > on exit > > + // > > + mOldStdInMode = Mode; > > + } > > // > > // Disable buffer (line input), echo, mouse, window > > // > > @@ -82,6 +94,12 @@ SecConfigStdIn ( > > // > > if (Success) { > > Success = GetConsoleMode (GetStdHandle (STD_OUTPUT_HANDLE), > > &Mode); > > + if (!mEmulatorStdInConfigured) { > > + // > > + // Save the original state of the console so it can be > restored > > on exit > > + // > > + mOldStdOutMode = Mode; > > + } > > if (Success) { > > Success = SetConsoleMode ( > > GetStdHandle (STD_OUTPUT_HANDLE), @@ -91,6 +109,9 > > @@ SecConfigStdIn ( > > } > > > > #endif > > + if (Success) { > > + mEmulatorStdInConfigured = TRUE; > > + } > > return Success ? EFI_SUCCESS : EFI_DEVICE_ERROR; } > > > > @@ -467,6 +488,23 @@ SecExit ( > > UINTN Status > > ) > > { > > + #if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && > > (NTDDI_VERSION > NTDDI_WIN10_TH2) > > + BOOL Success; > > + #endif > > + > > + if (mEmulatorStdInConfigured) { > > + // > > + // Reset the console back to its original state > > + // > > + #if defined (NTDDI_VERSION) && defined (NTDDI_WIN10_TH2) && > > (NTDDI_VERSION > NTDDI_WIN10_TH2) > > I think the BOOL Success variable could be added here and reduce the > #if statements > > > + Success = SetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), > > mOldStdInMode); > > + if (Success) { > > + SetConsoleMode (GetStdHandle (STD_OUTPUT_HANDLE), > > mOldStdOutMode); > > + } > > + #else > > + SetConsoleMode (GetStdHandle (STD_INPUT_HANDLE), mOldStdInMode); > > + #endif } > > exit ((int)Status); > > } > > > > -- > > 2.34.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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