| #![doc(hidden)] |
| |
| // The stack unwinding ABI in ARM is specified as part of EABI. Although |
| // libunwind has not been ported to Tock OS (and likely will not be), LLVM still |
| // assumes some of the symbols are present. This causes linking errors |
| // (undefined symbol __aeabi_unwind_cpp_pr...). In environments without |
| // libunwind, it appears to be common practice to declare the symbols as empty |
| // functions; for example, the Linux Kernel does so in arch/arm/kernel/unwind.c. |
| // We do so here as well. The addition of these symbols to libtock-rs was |
| // discussed at https://groups.google.com/forum/#!topic/tock-dev/eov8fJmskLk. |
| |
| #[cfg(target_arch = "arm")] |
| #[no_mangle] |
| pub extern "C" fn __aeabi_unwind_cpp_pr0() {} |
| |
| #[cfg(target_arch = "arm")] |
| #[no_mangle] |
| pub extern "C" fn __aeabi_unwind_cpp_pr1() {} |
| |
| #[cfg(target_arch = "arm")] |
| #[no_mangle] |
| pub extern "C" fn __aeabi_unwind_cpp_pr2() {} |
