Initial project import

tools/v/vlib/builtin/wasm/alloc.v

@@ -0,0 +1,33 @@
+@[has_globals]
+module builtin
+
+// Shitty `sbrk` basic `malloc` and `free` impl
+// TODO: implement pure V `walloc` later
+
+__global g_heap_base = usize(vwasm_heap_base())
+
+// malloc dynamically allocates a `n` bytes block of memory on the heap.
+// malloc returns a `byteptr` pointing to the memory address of the allocated space.
+// unlike the `calloc` family of functions - malloc will not zero the memory block.
+@[unsafe]
+pub fn malloc(n isize) &u8 {
+	if n <= 0 {
+		$if no_imports ? {
+			return unsafe { nil }
+		} $else {
+			panic('malloc(n <= 0)')
+		}
+	}
+
+	res := g_heap_base
+	g_heap_base += usize(n)
+
+	return &u8(res)
+}
+
+// free allows for manually freeing memory allocated at the address `ptr`.
+// currently does not free any memory.
+@[unsafe]
+pub fn free(ptr voidptr) {
+	_ := ptr
+}