llvm-6502/lib/Support
2010-11-30 09:02:01 +00:00
..
Unix Support: Add PathV2 implementation. 2010-11-29 22:28:51 +00:00
Windows Support: Add PathV2 implementation. 2010-11-29 22:28:51 +00:00
Alarm.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Allocator.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
APFloat.cpp PR5207: change APInt::doubleToBits() and APInt::floatToBits() to be 2010-11-28 21:04:48 +00:00
APInt.cpp PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void. 2010-11-30 09:02:01 +00:00
APSInt.cpp
Atomic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
circular_raw_ostream.cpp
CMakeLists.txt Support: Add PathV2 implementation. 2010-11-29 22:28:51 +00:00
CommandLine.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ConstantRange.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
DAGDeltaAlgorithm.cpp
Debug.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
DeltaAlgorithm.cpp
Disassembler.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Dwarf.cpp
DynamicLibrary.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Errno.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ErrorHandling.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
FileUtilities.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
FoldingSet.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
FormattedStream.cpp
GraphWriter.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Host.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
IncludeFile.cpp Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
IntervalMap.cpp Move tree navigation to a new Path class that doesn't have to be a template. 2010-11-26 01:39:40 +00:00
IsInf.cpp
IsNAN.cpp
Makefile Merge System into Support. 2010-11-29 18:16:10 +00:00
ManagedStatic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Memory.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
MemoryBuffer.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
MemoryObject.cpp
Mutex.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Path.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
PathV2.cpp Support: Add PathV2 implementation. 2010-11-29 22:28:51 +00:00
PluginLoader.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
PrettyStackTrace.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Process.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Program.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
raw_os_ostream.cpp
raw_ostream.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
README.txt.system Merge System into Support. 2010-11-29 18:16:10 +00:00
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 Merge System into Support. 2010-11-29 18:16:10 +00:00
SearchForAddressOfSpecialSymbol.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Signals.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp now that AsmPrinter::EmitInlineAsm is factored right, we can eliminate the 2010-11-17 08:13:01 +00:00
Statistic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp Fix Whitespace. 2010-11-26 04:16:08 +00:00
system_error.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
SystemUtils.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
TargetRegistry.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Threading.cpp Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
ThreadLocal.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Timer.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
TimeValue.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ToolOutputFile.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Triple.cpp Remove PIC16 remnants. 2010-11-27 18:20:30 +00:00
Twine.cpp Fix Whitespace. 2010-11-26 04:16:08 +00:00
Valgrind.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00

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