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BaseTools/GenFds: permit stripped MM_CORE_STANDALONE binaries 

The standalone MM core is executed in place, and resides in a
separate execution context which may be space constrained.
Since code and data may be mapped with different attributes for
security reasons, the PE/COFF binary could have a section
alignment of 4 KB.

This means that any relocation data is not only useless, but it
will also take up 4 KB of valuable space.

So add support for the RELOCS_STRIPPED attribute on FFS files of
this type, so that we can get rid of the .reloc section altogether.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>
This commit is contained in:
Ard Biesheuvel 2019-01-03 13:06:17 +01:00
parent 672601cfcc
commit 8ef653aa5a
3 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
BaseTools/Source/Python/GenFds/EfiSection.py
View File

@ -68,7 +68,7 @@ class EfiSection (EfiSectionClassObject):
StringData = FfsInf.__ExtendMacro__(self.StringData)
ModuleNameStr = FfsInf.__ExtendMacro__('$(MODULE_NAME)')
NoStrip = True
if FfsInf.ModuleType in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM) and SectionType in (BINARY_FILE_TYPE_TE, BINARY_FILE_TYPE_PE32):
if FfsInf.ModuleType in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_MM_CORE_STANDALONE) and SectionType in (BINARY_FILE_TYPE_TE, BINARY_FILE_TYPE_PE32):
if FfsInf.KeepReloc is not None:
NoStrip = FfsInf.KeepReloc
elif FfsInf.KeepRelocFromRule is not None:

2
BaseTools/Source/Python/GenFds/FdfParser.py
View File

@ -2589,7 +2589,7 @@ class FdfParser:
#
@staticmethod
def _FileCouldHaveRelocFlag (FileType):
if FileType in {SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, 'PEI_DXE_COMBO'}:
if FileType in {SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_MM_CORE_STANDALONE, 'PEI_DXE_COMBO'}:
return True
else:
return False

2
BaseTools/Source/Python/GenFds/FfsInfStatement.py
View File

@ -901,7 +901,7 @@ class FfsInfStatement(FfsInfStatementClassObject):
# @retval string File name of the generated section file
#
def __GenComplexFileSection__(self, Rule, FvChildAddr, FvParentAddr, IsMakefile = False):
if self.ModuleType in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM):
if self.ModuleType in (SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_MM_CORE_STANDALONE):
if Rule.KeepReloc is not None:
self.KeepRelocFromRule = Rule.KeepReloc
SectFiles = []