From 3a129c85920404e7ccdb7e655c89fa60a0309cfd Mon Sep 17 00:00:00 2001 From: Andrew Kaylor Date: Wed, 10 Oct 2012 01:41:33 +0000 Subject: This patch adds new functions to the SectionRef and ObjectFile interfaces to determine whether or not a section is meant to be read-only. These functions will be used by the MCJIT RuntimeDyld to give hints to the memory manager during the object loading process in a future patch. Patch by Ashok Thirumurthi. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165586 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Object/COFFObjectFile.cpp | 7 +++++++ lib/Object/MachOObjectFile.cpp | 11 +++++++++++ 2 files changed, 18 insertions(+) (limited to 'lib/Object') diff --git a/lib/Object/COFFObjectFile.cpp b/lib/Object/COFFObjectFile.cpp index 8ab54c6295..72759ff86e 100644 --- a/lib/Object/COFFObjectFile.cpp +++ b/lib/Object/COFFObjectFile.cpp @@ -377,6 +377,13 @@ error_code COFFObjectFile::isSectionZeroInit(DataRefImpl Sec, return object_error::success; } +error_code COFFObjectFile::isSectionReadOnlyData(DataRefImpl Sec, + bool &Result) const { + // FIXME: Unimplemented. + Result = false; + return object_error::success; +} + error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const { diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp index d229671954..ed9449c50d 100644 --- a/lib/Object/MachOObjectFile.cpp +++ b/lib/Object/MachOObjectFile.cpp @@ -612,6 +612,17 @@ error_code MachOObjectFile::isSectionZeroInit(DataRefImpl DRI, return object_error::success; } +error_code MachOObjectFile::isSectionReadOnlyData(DataRefImpl Sec, + bool &Result) const { + // Consider using the code from isSectionText to look for __const sections. + // Alternately, emit S_ATTR_PURE_INSTRUCTIONS and/or S_ATTR_SOME_INSTRUCTIONS + // to use section attributes to distinguish code from data. + + // FIXME: Unimplemented. + Result = false; + return object_error::success; +} + error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const { -- cgit v1.2.3-18-g5258