llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-30 02:32:08 +00:00

History

Duncan P. N. Exon Smith 81bb18728b Support: Add dwarf::getLanguage() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228458 91177308-0d34-0410-b5e6-96231b3b80d8		2015-02-06 22:55:13 +00:00
..
Unix	iOS doesn't have crt_externs.h available, so we fall back to the posix method.	2015-01-30 00:10:39 +00:00
Windows	[Cygming] Seek also chkstk_ms, or JIT fails with DLL builds. It is fixup for r227519.	2015-01-30 13:01:19 +00:00
Allocator.cpp
APFloat.cpp	[APFloat][ADT] Fix sign handling logic for FMA results that truncate to zero.	2015-01-04 01:20:55 +00:00
APInt.cpp	APInt: udivrem should use machine instructions for single-word APInts	2014-12-14 09:41:56 +00:00
APSInt.cpp
ARMBuildAttrs.cpp
ARMWinEH.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt
CommandLine.cpp	Make helper functions/classes/globals static. NFC.	2015-02-06 17:51:54 +00:00
Compression.cpp
ConvertUTF.c
ConvertUTFWrapper.cpp	Have the UTF conversion wrappers append a null terminator.	2015-01-26 22:05:50 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp	[cleanup] Re-sort all the #include lines in LLVM using	2015-01-14 11:23:27 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp	Support: Add dwarf::getLanguage()	2015-02-06 22:55:13 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp	[cleanup] Re-sort all the #include lines in LLVM using	2015-01-14 11:23:27 +00:00
FileOutputBuffer.cpp	[cleanup] Re-sort all the #include lines in LLVM using	2015-01-14 11:23:27 +00:00
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp
Host.cpp	Remove a debugging assert.	2014-12-17 03:38:04 +00:00
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LEB128.cpp
LineIterator.cpp
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp
Makefile
ManagedStatic.cpp
MathExtras.cpp
MD5.cpp
Memory.cpp
MemoryBuffer.cpp	Pass EC by reference to MemoryBufferMMapFile to return error code.	2014-12-12 22:27:53 +00:00
MemoryObject.cpp
Mutex.cpp
Options.cpp
Path.cpp	[Object][ELF] Test unknown type.	2015-01-23 21:58:09 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp	Fix the preprocessor checks used to determine if backtraces have been enabled.	2015-01-29 07:53:13 +00:00
Process.cpp
Program.cpp
RandomNumberGenerator.cpp	Random Number Generator Refactoring (removing from Module)	2014-12-17 18:12:10 +00:00
raw_os_ostream.cpp
raw_ostream.cpp	Teach raw_ostream to support hex formatting without a prefix '0x'.	2015-01-26 18:21:33 +00:00
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
ScaledNumber.cpp	[cleanup] Re-sort all the #include lines in LLVM using	2015-01-14 11:23:27 +00:00
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp
SpecialCaseList.cpp	SpecialCaseList: Add support for parsing multiple input files.	2015-02-04 17:39:48 +00:00
Statistic.cpp
StreamingMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp	ThreadLocal: Move Unix-specific code out of Support/ThreadLocal.cpp	2014-12-15 01:19:53 +00:00
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	The canonical CPU variant for ARM according to config.guess uses a	2015-01-26 11:41:48 +00:00
Twine.cpp
Unicode.cpp
Valgrind.cpp
Watchdog.cpp
YAMLParser.cpp	Remove std::move that was preventing return value optimization.	2015-01-17 00:46:44 +00:00
YAMLTraits.cpp	Remove trailing whitespace. NFC ®	2015-01-26 18:02:18 +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