UefiShellLevel2CommandsLib (somewhat questionably) calls the BaseLib-internal function InternalCharToUpper().
This function is declared in "MdePkg/Library/BaseLib/BaseLibInternals.h", which is not a public library class header. UefiShellLevel2CommandsLib therefore duplicates the function declaration, but a mistake was made: the EFIAPI calling convention is not spelled out on the duplicated declaration. Therefore calls made from UefiShellLevel2CommandsLib will not match the actual function definition in "MdePkg/Library/BaseLib/String.c", when GCC/X64 toolchains are used. One consequence of this is that cross-filesystem copies don't work in the UEFI shell (see the StrniCmp() function in "UefiShellLevel2CommandsLib.c"). From the original report: > FS0:\efi\ubuntu\> cp grubx64.efi fs1:\ > > cp: The source and destination are the same. Copy the declaration from "BaseLibInternals.h" to "UefiShellLevel2CommandsLib.c" verbatim. Reported-by: Rebecca Cran <[email protected]> Analyzed-by: Thomas Palmer <[email protected]> Analyzed-by: Liming Gao <[email protected]> Ref: http://mid.mail-archive.com/[email protected] Cc: Jaben Carsey <[email protected]> Cc: Liming Gao <[email protected]> Cc: Rebecca Cran <[email protected]> Cc: Ruiyu Ni <[email protected]> Cc: Thomas Palmer <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <[email protected]> --- ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c b/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c index 7948e53cfc46..e9ce63189224 100644 --- a/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c +++ b/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c @@ -268,8 +268,9 @@ VerifyIntermediateDirectories ( @return Char as an upper case character. **/ CHAR16 +EFIAPI InternalCharToUpper ( - IN CONST CHAR16 Char + IN CHAR16 Char ); /** -- 2.14.1.3.gb7cf6e02401b _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
