llvm-project/clang
David Majnemer 310e3a8f60 MS ABI: Implement proper support for setjmp
On targets which use the MSVCRT, setjmp is a macro which expands to
_setjmp or _setjmpex.

_setjmp and _setjmpex have a secret, hidden argument which is not listed
in the function prototype on X64 and WoA.  This hidden argument always
seems to be the frame pointer.

_setjmpex isn't used on X86, _setjmp is magically replaced with a call
to _setjmp3.  The second argument is zero for 'normal' setjmp/longjmp
pairs, otherwise it is a count of additional variadic arguments.  This
is used when setjmp appears inside of a try or __try.

It is not safe to use a pointer to setjmp because _setjmp, _setjmpex and
_setmp3 are not compatible with setjmp.

llvm-svn: 227426
2015-01-29 09:29:21 +00:00
..
INPUTS
bindings [libclang] Add function to retrieve storage class in libclang. 2014-10-15 17:05:31 +00:00
cmake/modules Make it easier to build against a pre-built Clang package with CMake 2014-11-05 23:14:59 +00:00
docs Fix broken doc link to Clang 3.5 release notes 2015-01-26 19:53:16 +00:00
examples Replace size() calls on containers with empty() calls where appropriate. NFC 2015-01-23 15:36:10 +00:00
include MS ABI: Implement proper support for setjmp 2015-01-29 09:29:21 +00:00
lib MS ABI: Implement proper support for setjmp 2015-01-29 09:29:21 +00:00
runtime [CMake] Add check-asan-dynamic command to external compiler-rt setup. 2014-12-18 21:40:39 +00:00
test MS ABI: Implement proper support for setjmp 2015-01-29 09:29:21 +00:00
tools Remove support for pnaclcall attribute 2015-01-28 20:24:52 +00:00
unittests clang-format: Fix another crasher caused by incomplete macro code. 2015-01-23 19:37:25 +00:00
utils Replace size() calls on containers with empty() calls where appropriate. NFC 2015-01-23 15:36:10 +00:00
www Re-arrange DR test cases, and update DR status page. 2015-01-28 01:01:21 +00:00
.arcconfig
.clang-format
.clang-tidy Enable display of compiler diagnostics in clang-tidy. 2014-10-29 17:28:51 +00:00
.gitignore
CMakeLists.txt clang/CMakeLists.txt: Introduce LLVM_SHLIB_OUTPUT_INTDIR also here, or plugins tests might fail. 2015-01-05 14:06:14 +00:00
CODE_OWNERS.TXT Relinquish ownership of MS-style inline assembly. 2014-10-13 16:45:21 +00:00
INSTALL.txt
LICENSE.TXT
Makefile
ModuleInfo.txt
NOTES.txt Remove trailing spaces 2014-07-13 17:11:45 +00:00
README.txt Remove whitespace from test commit. 2014-07-16 19:10:36 +00:00

README.txt

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
(C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM
compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things
beyond just compiling code: we intend for Clang to be host to a number of
different source-level tools.  One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read
the relevant web sites.  Here are some pointers:

Information on Clang:              http://clang.llvm.org/
Building and using Clang:          http://clang.llvm.org/get_started.html
Clang Static Analyzer:             http://clang-analyzer.llvm.org/
Information on the LLVM project:   http://llvm.org/

If you have questions or comments about Clang, a great place to discuss them is
on the Clang development mailing list:
  http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev

If you find a bug in Clang, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/