diff --git a/README.markdown b/README.markdown deleted file mode 100644 index 66144d44..00000000 --- a/README.markdown +++ /dev/null @@ -1,14 +0,0 @@ -libffi-ios provides an experimental port of libffi to Apple's iOS. - -The libffi closure mechanism has previously required the use of executable data pages, however, iOS sandbox restrictions prevent their use. -The OS does, however, permit remapping of executable pages, allowing one to remap a single page to multiple locations. libffi-ios modifies -ffi_closure_alloc/ffi_closure_free APIs to make use of this functionality to implement dynamically allocated and configured closure -trampolines without requiring the use of executable data. - -The implementation works by allocating a writable config page, and then remapping a page of pre-compiled trampolines directly -after the config page. The trampolines use PC-relative addressing to load their context from the config page, and so it is possible -to allocate as many of these trampolines tables as you have memory space. - -Note that this implementation is *experimental* and has seen very limited testing. - -A build-ios.sh script is provided to configure and build an iOS library; you may need to edit the SDK settings in the script.