llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-09-14 20:57:01 +00:00

History

Rui Ueyama b850a05f2c Recognize 0x0000 as a COFF file magic. Summary: Some machine-type-neutral object files containing only undefined symbols actually do exist in the Windows standard library. Need to recognize them as COFF files. Reviewers: Bigcheese CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2164 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194734 91177308-0d34-0410-b5e6-96231b3b80d8		2013-11-14 22:09:08 +00:00
..
Unix	Rules adjustments in order to build on DragonFly BSD.	2013-10-31 14:35:00 +00:00
Windows	Fix a conversion warning in the mingw32 build	2013-10-18 07:53:25 +00:00
Allocator.cpp
APFloat.cpp
APInt.cpp
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt
CommandLine.cpp
Compression.cpp
ConstantRange.cpp	[ConstantRange] improve my previous patch per Nick suggestion	2013-10-31 19:53:53 +00:00
ConvertUTF.c
ConvertUTFWrapper.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp
DynamicLibrary.cpp	Make sure LLVMLoadLibraryPermanently gets an extern "C" symbol.	2013-11-13 15:35:13 +00:00
Errno.cpp
ErrorHandling.cpp	Fix the -Werror -Wpedantic clang selfhost build	2013-10-22 12:30:55 +00:00
FileOutputBuffer.cpp
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp
Host.cpp	X86: Add a description for AMD bdver3 aka Steamroller.	2013-11-04 10:29:20 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp
Makefile
ManagedStatic.cpp
MD5.cpp
Memory.cpp
MemoryBuffer.cpp	Change MemoryBuffer::getFile to take a Twine.	2013-10-25 19:06:52 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp	Recognize 0x0000 as a COFF file magic.	2013-11-14 22:09:08 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp	Make the pretty stack trace be an opt-in, rather than opt-out, facility. Enable pretty	2013-11-04 02:22:25 +00:00
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp
Statistic.cpp
StreamableMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp	Add {start,end}with_lower methods to StringRef.	2013-10-30 18:32:26 +00:00
StringRefMemoryObject.cpp
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp
Twine.cpp
Unicode.cpp
Valgrind.cpp
Watchdog.cpp
YAMLParser.cpp	Can we move to C++11 already?	2013-10-18 23:07:01 +00:00
YAMLTraits.cpp	yaml::Input::mapTag(): Don't use StringRef to hold return type of std::string.	2013-11-14 07:08:56 +00:00

README.txt.system

Design Of lib/System
====================

The software in this directory is designed to completely shield LLVM from any
and all operating system specific functionality. It is not intended to be a
complete operating system wrapper (such as ACE), but only to provide the
functionality necessary to support LLVM.

The software located here, of necessity, has very specific and stringent design
rules. Violation of these rules means that cracks in the shield could form and
the primary goal of the library is defeated. By consistently using this library,
LLVM becomes more easily ported to new platforms since the only thing requiring
porting is this library.

Complete documentation for the library can be found in the file:
  llvm/docs/SystemLibrary.html
or at this URL:
  http://llvm.org/docs/SystemLibrary.html

While we recommend that you read the more detailed documentation, for the
impatient, here's a high level summary of the library's requirements.

 1. No system header files are to be exposed through the interface.
 2. Std C++ and Std C header files are okay to be exposed through the interface.
 3. No exposed system-specific functions.
 4. No exposed system-specific data.
 5. Data in lib/System classes must use only simple C++ intrinsic types.
 6. Errors are handled by returning "true" and setting an optional std::string
 7. Library must not throw any exceptions, period.
 8. Interface functions must not have throw() specifications.
 9. No duplicate function impementations are permitted within an operating
    system class.

To accomplish these requirements, the library has numerous design criteria that
must be satisfied. Here's a high level summary of the library's design criteria:

 1. No unused functionality (only what LLVM needs)
 2. High-Level Interfaces
 3. Use Opaque Classes
 4. Common Implementations
 5. Multiple Implementations
 6. Minimize Memory Allocation
 7. No Virtual Methods