llvm-6502/lib/Support
2012-09-23 02:12:10 +00:00
..
Unix Add an --enable-backtraces option to configure to determine 2012-09-21 23:03:29 +00:00
Windows This patch adds memory support functions which will later be used to implement section-specific protection handling in MCJIT. 2012-09-19 20:46:12 +00:00
Allocator.cpp BumpPtrAllocator: Make sure threshold cannot be initialized with a value smaller than the slab size. 2012-03-01 22:10:16 +00:00
APFloat.cpp Fix undefined behavior (signed integer overflow) when Clang parses a hexfloat with an enormous exponent. Caught by an existing unit test + -ftrapv. 2012-08-24 00:01:19 +00:00
APInt.cpp PR13326: Fix a subtle edge case in the udiv -> magic multiply generator. 2012-07-11 18:31:59 +00:00
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt Initial commit of new FileOutputBuffer support class. 2012-08-01 02:29:50 +00:00
CommandLine.cpp Remove tabs. 2012-07-19 00:15:11 +00:00
ConstantRange.cpp make ConstantRange::zeroExtend() optimal 2012-07-23 20:33:29 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp move Signals to .rodata 2012-04-21 14:45:37 +00:00
DAGDeltaAlgorithm.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
DataExtractor.cpp DataExtractor: Fix integer truncation issues in LEB128 extraction. 2012-08-20 10:52:11 +00:00
DataStream.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
Debug.cpp Typos. 2012-07-27 21:41:59 +00:00
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp Lowercase the tag name to match the rest of dwarf. 2012-03-29 21:35:05 +00:00
DynamicLibrary.cpp Fix Android build of gtest and lib/Support. 2012-09-04 09:14:45 +00:00
Errno.cpp llvm/lib/Support/Errno.cpp: [Win32] Fix usage of strerror_s(). 2012-06-24 03:51:04 +00:00
ErrorHandling.cpp
FileOutputBuffer.cpp Initial commit of new FileOutputBuffer support class. 2012-08-01 02:29:50 +00:00
FileUtilities.cpp
FoldingSet.cpp Add operator< for FoldingSetNodeID. 2012-09-08 04:25:29 +00:00
FormattedStream.cpp
GraphWriter.cpp Fix -Wcovered-switch-default warning. 2012-05-24 07:51:46 +00:00
Hashing.cpp Add the source file with trivial definitions in it that was missing from 2012-03-01 18:58:59 +00:00
Host.cpp Add support for AMD Geode. 2012-09-12 14:36:02 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LLVMBuild.txt
Locale.cpp platform support for counting column widths and checking isprint 2012-04-17 20:03:03 +00:00
LocaleGeneric.inc C++ has newlines at the end of files (including include files). 2012-04-17 23:46:51 +00:00
LocaleWindows.inc platform support for counting column widths and checking isprint 2012-04-17 20:03:03 +00:00
LocaleXlocale.inc fix error check in assert 2012-04-18 00:40:23 +00:00
LockFileManager.cpp Fix Android build of gtest and lib/Support. 2012-09-04 09:14:45 +00:00
Makefile
ManagedStatic.cpp
Memory.cpp This patch adds memory support functions which will later be used to implement section-specific protection handling in MCJIT. 2012-09-19 20:46:12 +00:00
MemoryBuffer.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
MemoryObject.cpp Make MemoryObject accessor members const again 2012-02-29 01:09:06 +00:00
Mutex.cpp Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +00:00
Path.cpp PR13013: ELF Type identification fails for MSB type ELF files. 2012-06-25 14:48:43 +00:00
PathV2.cpp [Support/PathV2] Fix out of bounds access in identify_magic when the file is empty. 2012-06-19 05:29:57 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp Support/Process: Move llvm::sys::Process::GetRandomNumber() from Process.cpp to Unix/Process.inc. 2012-05-06 08:24:18 +00:00
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp Replace the BUILTIN_EXPECT macro with a less horrible LLVM_LIKELY/LLVM_UNLIKELY interface. 2012-08-29 22:57:00 +00:00
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp
regexec.c Fix integer undefined behavior due to signed left shift overflow in LLVM. 2012-08-24 23:29:28 +00:00
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp SmallPtrSet: Reuse DenseMapInfo's pointer hash function instead of inventing a bad one ourselves. 2012-04-18 10:37:32 +00:00
SmallVector.cpp Reduce alignment of SmallVector<T> to the required amount, rather than forcing 16-byte alignment. This fixes misaligned SmallVector accesses via ExtractValueInst's SmallVector data member. 2012-08-22 00:11:07 +00:00
SourceMgr.cpp SourceMgr: Use has_colors() instead of just is_displayed() before trying to use 2012-07-20 18:29:44 +00:00
Statistic.cpp
StreamableMemoryObject.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
StringExtras.cpp Move the implementation of StringRef::split out of StringExtras.cpp 2012-02-21 12:00:25 +00:00
StringMap.cpp Add some __builtin_expect magic to StringMap. 2012-08-29 22:57:04 +00:00
StringPool.cpp
StringRef.cpp [Support/StringRef] Add find_last_not_of and {r,l,}trim. 2012-05-11 22:08:50 +00:00
system_error.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
SystemUtils.cpp
TargetRegistry.cpp Fix it so llvm-objdump -arch does accept x86 and x86-64 as valid arch names. 2012-05-08 23:38:45 +00:00
Threading.cpp
ThreadLocal.cpp Fix ThreadLocalImpl::getInstance for --disable-threads. 2012-06-26 17:13:58 +00:00
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp Rename ANDROIDEABI to Android. 2012-09-02 09:29:46 +00:00
Twine.cpp
Valgrind.cpp
YAMLParser.cpp Remove unused private member variables uncovered by the recent changes to clang's -Wunused-private-field. 2012-07-20 22:05:57 +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