i386: Fix missing break; in case statement leading to incorrectly returned FFI_BAD_ABI (#437) * i386: Add missing break triggering dead store static analyzer checks. Register calling sequence is being reported as bad ABI instead of working as intended. Found-by: Clang Static Analysis Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@macports.org> * Mark ffi arm sysv entry points as private_extern. Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@macports.org> * x86_64: Add implementation of compact unwind for ffi_call_unix64. Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>