Constructors and contract creation (#11)

Implement constructor logic and support create/create2 in the mock runtime

Signed-off-by: xermicus <cyrill@parity.io>

crates/pallet-contracts-pvm-llapi/src/lib.rs

@@ -1,52 +1,2 @@
-//! This crate vendors the [PolkaVM][0] C API and provides a LLVM module for interacting
-//! with the `pallet-contracts` runtime API.
-//! At present, the contracts pallet requires blobs to export `call` and `deploy`,
-//! and offers a bunch of [runtime API methods][1]. The provided [module] implements
-//! those exports and imports.
-//! [0]: [https://crates.io/crates/polkavm]
-//! [1]: [https://docs.rs/pallet-contracts/26.0.0/pallet_contracts/api_doc/index.html]
-
-use inkwell::{context::Context, memory_buffer::MemoryBuffer, module::Module, support::LLVMString};
-
-include!(concat!(env!("OUT_DIR"), "/polkavm_guest.rs"));
-
-/// Creates a LLVM module from the [BITCODE].
-/// The module does:
-/// - Export the `call` and `deploy` functions (which are named thereafter).
-/// - Import (most) `pallet-contracts` runtime API functions.
-/// Returns `Error` if the bitcode fails to parse, which should never happen.
-pub fn module<'context>(
-    context: &'context Context,
-    module_name: &str,
-) -> Result<Module<'context>, LLVMString> {
-    let buf = MemoryBuffer::create_from_memory_range(BITCODE, module_name);
-    Module::parse_bitcode_from_buffer(&buf, context)
-}
-
-/// Creates a module that sets the PolkaVM minimum stack size to [`size`] if linked in.
-pub fn min_stack_size<'context>(
-    context: &'context Context,
-    module_name: &str,
-    size: u32,
-) -> Module<'context> {
-    let module = context.create_module(module_name);
-    module.set_inline_assembly(&format!(
-        ".pushsection .polkavm_min_stack_size,\"\",@progbits
-        .word {size}
-        .popsection"
-    ));
-    module
-}
-
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        inkwell::targets::Target::initialize_riscv(&Default::default());
-        let context = inkwell::context::Context::create();
-        let module = crate::module(&context, "polkavm_guest").unwrap();
-
-        assert!(module.get_function("call").is_some());
-        assert!(module.get_function("deploy").is_some());
-    }
-}
+pub mod calling_convention;
+pub mod polkavm_guest;