llvm-6502/lib/Support
2011-01-24 17:27:17 +00:00
..
Unix Fix rename. 2011-01-16 22:18:41 +00:00
Windows Windows/PathV2.inc: For CryptAcquireContext(), CRYPT_VERIFYCONTEXT may be specified for easy use. 2011-01-17 22:41:34 +00:00
Allocator.cpp
APFloat.cpp Null initialize a few variables flagged by 2011-01-23 17:05:06 +00:00
APInt.cpp
APSInt.cpp
Atomic.cpp
circular_raw_ostream.cpp
CMakeLists.txt Add ADT/IntEqClasses.h as a light-weight implementation of EquivalenceClasses.h. 2010-12-21 00:04:46 +00:00
CommandLine.cpp Support/CommandLine: Fix LookupNearestOption to also search extra option names. 2011-01-24 17:27:17 +00:00
ConstantRange.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileUtilities.cpp MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm. 2010-12-16 03:29:14 +00:00
FoldingSet.cpp
FormattedStream.cpp Add missing standard headers. Patch by Joerg Sonnenberger! 2010-12-19 20:43:38 +00:00
GraphWriter.cpp
Host.cpp
IncludeFile.cpp
IntEqClasses.cpp Use IntEqClasses to compute connected components of live intervals. 2010-12-21 00:48:17 +00:00
IntervalMap.cpp
IsInf.cpp
IsNAN.cpp
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp Add missing standard headers. Patch by Joerg Sonnenberger! 2010-12-19 20:43:38 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp Support/PathV2: Add identify_magic. 2011-01-15 20:39:36 +00:00
PathV2.cpp Support/PathV2: Add identify_magic. 2011-01-15 20:39:36 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp Change all self assignments X=X to (void)X, so that we can turn on a 2010-12-23 00:58:24 +00:00
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp Support/raw_ostream: Fix uninitalized variable in raw_fd_ostream constructor. 2011-01-17 15:53:12 +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
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm. 2010-12-16 03:29:14 +00:00
Statistic.cpp
StringExtras.cpp
StringMap.cpp Change all self assignments X=X to (void)X, so that we can turn on a 2010-12-23 00:58:24 +00:00
StringPool.cpp
StringRef.cpp
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp Clang was not parsing target triples involving EABI and was generating wrong IR (wrong PCS) and passing the wrong information down llc via the target-triple printed in IR. I've fixed this by adding the parsing of EABI into LLVM's Triple class and using it to choose the correct PCS in Clang's Tools. A Clang patch is on its way to use this infrastructure. 2011-01-21 18:25:47 +00:00
Twine.cpp
Valgrind.cpp

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