Many renames.

- Everything polkadot becomes polkadot-.
- Wasm (substrate) executor tests split from Wasm (Polkadot) runtime and
built independently.

substrate/pwasm-libc/src/lib.rs

@@ -0,0 +1,53 @@
+#![warn(missing_docs)]
+#![cfg_attr(feature = "strict", deny(warnings))]
+#![no_std]
+
+//! libc externs crate
+
+extern "C" {
+	fn ext_memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
+	fn ext_memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
+	fn ext_memset(dest: *mut u8, c: i32, n: usize) -> *mut u8;
+	fn ext_memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32;
+	fn ext_malloc(size: usize) -> *mut u8;
+	fn ext_free(ptr: *mut u8);
+}
+
+// Declaring these function here prevents Emscripten from including it's own verisons
+// into final binary.
+
+/// memcpy extern
+#[no_mangle]
+pub unsafe extern "C" fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 {
+	ext_memcpy(dest, src, n)
+}
+
+/// memcmp extern
+#[no_mangle]
+pub unsafe extern "C" fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32 {
+	ext_memcmp(s1, s2, n)
+}
+
+/// memmove extern
+#[no_mangle]
+pub unsafe extern "C" fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 {
+	ext_memmove(dest, src, n)
+}
+
+/// memset extern
+#[no_mangle]
+pub unsafe extern "C" fn memset(dest: *mut u8, c: i32, n: usize) -> *mut u8 {
+	ext_memset(dest, c, n)
+}
+
+/// malloc extern
+#[no_mangle]
+pub unsafe extern "C" fn malloc(size: usize) -> *mut u8 {
+	ext_malloc(size)
+}
+
+/// free extern
+#[no_mangle]
+pub unsafe extern "C" fn free(ptr: *mut u8) {
+	ext_free(ptr);
+}