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The ebp/rbp register can either be used for the frame pointer or as general purpose register. With gcc (and clang) this depends on the -f(no-)omit-frame-pointer switch. This patch updates tools_def.template to explicitly set the compiler option and also add a define to allow conditionally compile code. The new define is used to fix stack switching in TemporaryRamMigration. The ebp/rbp must not be touched when the compiler can use it as general purpose register. With version 12 gcc starts actually using the register, so changing it leads to firmware crashes in some configurations. Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3934 Reported-by: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This directory contains the template files for the next generation of the EDK II Build infrastructure. These files will be copied into the WORKSPACE's Conf directory if and only if the target files do not exist. These files may be updated frequently. The XMLSchema directory contains the EDK II Packaging XML definitions. The schema may change in the future. It differs somewhat from the early versions of the XML Schema.