llvm-6502

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LLVM backend for 6502

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Reid Kleckner 016f651f8d Fix symbol resolution of floating point libc builtins in MCJIT Fix for LLI failure on Windows\X86: http://llvm.org/PR5053 LLI.exe crashes on Windows\X86 when single precession floating point intrinsics like the following are used: acos, asin, atan, atan2, ceil, copysign, cos, cosh, exp, floor, fmin, fmax, fmod, log, pow, sin, sinh, sqrt, tan, tanh The above intrinsics are defined as inline-expansions in math.h, and are not exported by msvcr120.dll (Win32 API GetProcAddress returns null). For an FREM instruction, the JIT compiler generates a call to a stub for the fmodf() intrinsic, and adds a relocation to fixup at load time. The loader searches the libraries for the function, but fails because the symbol is not exported. So, the call target remains NULL and the execution crashes. Since the math functions are loaded at JIT/runtime, the JIT can patch CALL instruction directly instead of the searching the libraries' exported symbols. However, this fix caused build failures due to unresolved symbols like _fmodf at link time. Therefore, the current fix defines helper functions in the Runtime link/load library to perform the above operations. The address of these helper functions are used to patch up the CALL instruction at load time. Reviewers: lhames, rnk Reviewed By: rnk Differential Revision: http://reviews.llvm.org/D5387 Patch by Swaroop Sridhar! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221947 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-13 23:32:52 +00:00
autoconf	Add a check for misbehaving -Wcomment from gcc-4.7 and add	2014-11-05 00:35:15 +00:00
bindings	[OCaml] Fix mismatched CAMLparam/CAMLreturn.	2014-11-03 11:47:14 +00:00
cmake	Use -Wcast-qual in cmake builds, not only autoconfo ones.	2014-11-13 19:45:27 +00:00
docs	configure.ac lives in autoconf/, not autotools/	2014-11-10 22:36:04 +00:00
examples	[CMake] llvm/examples: Update libdeps for unoptimized builds.	2014-10-31 15:27:16 +00:00
include	ADT: Use perfect forwarding in StringMapEntry::Create()	2014-11-13 23:23:02 +00:00
lib	Fix symbol resolution of floating point libc builtins in MCJIT	2014-11-13 23:32:52 +00:00
projects
test	Fix symbol resolution of floating point libc builtins in MCJIT	2014-11-13 23:32:52 +00:00
tools	Object, Mach-O: Refactor and clean code up	2014-11-13 19:48:56 +00:00
unittests	Fix the other build system.	2014-11-13 17:12:19 +00:00
utils	Fix nested namespace with decltype to hopefully work with MSVC	2014-11-13 21:56:57 +00:00
.arcconfig
.clang-format
.clang-tidy	Enable display of compiler diagnostics in clang-tidy by default.	2014-10-29 17:29:38 +00:00
.gitignore	Initial version of Go bindings.	2014-10-16 22:48:02 +00:00
CMakeLists.txt	Pass PRIVATE to target_link_libraries if using shared libraries.	2014-11-07 15:33:56 +00:00
CODE_OWNERS.TXT
configure	Add a check for misbehaving -Wcomment from gcc-4.7 and add	2014-11-05 00:35:15 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in	Add a check for misbehaving -Wcomment from gcc-4.7 and add	2014-11-05 00:35:15 +00:00
Makefile.rules	Add a check for misbehaving -Wcomment from gcc-4.7 and add	2014-11-05 00:35:15 +00:00
README.txt

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