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Commit d0204157 authored by Zach Johnson's avatar Zach Johnson
Browse files

rusty-gd: stub out HCI shim FFI 

Bug: 171749953
Tag: #gd-refactor
Test: gd/cert/run --rhost SimpleHalTest
Change-Id: I2e02896d344db953d1bfec6c5c7fdbdc8eb4a00c
parent 2d930b81

system/gd/Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -352,6 +352,7 @@ cc_test { 
        "libbluetooth_rust_interop",

        "libbt_shim_ffi",

        "libcxxbridge05",

        "libchrome",

    ],

}

system/gd/rust/shim/Android.bp

+56 −3
Original line number Diff line number Diff line
@@ -8,14 +8,33 @@ rust_ffi_static { 
        "libbt_common",

        "libcxx",

    ],

    static_libs: [

        "libbt_callbacks_cxx",

    ],

    host_supported: true,

}



cc_library_static {

    name: "libbluetooth_rust_interop",

    generated_headers: ["libbt_init_flags_bridge_header", "libbt_shim_bridge_header"],

    generated_sources: ["libbt_init_flags_bridge_code", "libbt_shim_bridge_code"],

    export_generated_headers: ["libbt_init_flags_bridge_header", "libbt_shim_bridge_header"],

    generated_headers: [

        "libbt_init_flags_bridge_header",

        "libbt_shim_bridge_header",

        "libbt_hci_bridge_header",

        "cxx-bridge-header",

    ],

    generated_sources: [

        "libbt_init_flags_bridge_code",

        "libbt_shim_bridge_code",

        "libbt_hci_bridge_code",

    ],

    export_generated_headers: [

        "libbt_init_flags_bridge_header",

        "libbt_shim_bridge_header",

        "libbt_hci_bridge_header",

        "cxx-bridge-header",

    ],

    header_libs: ["libbt_callbacks_cxx_headers"],

    export_header_lib_headers: ["libbt_callbacks_cxx_headers"],

    cflags: [

        "-Wno-unused-const-variable",

    ],
@@ -24,11 +43,31 @@ cc_library_static { 
        "//apex_available:platform",

        "com.android.bluetooth.updatable",

    ],

    shared_libs: [

        "libchrome",

    ],

    static_libs: [

        "libbt_shim_ffi",

    ],

}



cc_library_static {

    name: "libbt_callbacks_cxx",

    header_libs: ["libbt_callbacks_cxx_headers"],

    srcs: ["callbacks/callbacks.cc"],

    generated_headers: ["libbt_hci_bridge_header", "cxx-bridge-header"],

    shared_libs: [

        "libchrome",

    ],

    host_supported: true,

}



cc_library_headers {

    name: "libbt_callbacks_cxx_headers",

    local_include_dirs: ["callbacks"],

    host_supported: true,

}



genrule {

    name: "libbt_shim_bridge_header",

    tools: ["cxxbridge"],
@@ -61,4 +100,18 @@ genrule { 
    out: ["init_flags.cc"],

}



genrule {

    name: "libbt_hci_bridge_header",

    tools: ["cxxbridge"],

    cmd: "$(location cxxbridge) $(in) --header > $(out)",

    srcs: ["src/hci.rs"],

    out: ["src/hci.rs.h"],

}



genrule {

    name: "libbt_hci_bridge_code",

    tools: ["cxxbridge"],

    cmd: "$(location cxxbridge) $(in) >> $(out)",

    srcs: ["src/hci.rs"],

    out: ["hci.cc"],

}

system/gd/rust/shim/callbacks/callbacks.cc

0 → 100644
+1 −0
Original line number Diff line number Diff line 
#include "callbacks/callbacks.h"

system/gd/rust/shim/callbacks/callbacks.h

0 → 100644
+26 −0
Original line number Diff line number Diff line 
#pragma once



#include "base/callback.h"

#include "rust/cxx.h"



namespace bluetooth {

namespace shim {

namespace rust {



class u8SliceCallback {

 public:

  u8SliceCallback(base::Callback<void(::rust::Slice<uint8_t>)> callback) : callback_(callback) {}



  void Run(::rust::Slice<uint8_t> value) const {

    callback_.Run(value);

  }



 private:

  base::Callback<void(::rust::Slice<uint8_t>)> callback_;

};



}  // namespace rust

}  // namespace shim

}  // namespace bluetooth



#include "src/hci.rs.h"

system/gd/rust/shim/src/hci.rs

0 → 100644
+35 −0
Original line number Diff line number Diff line 
//! Hci shim



#[cxx::bridge(namespace = bluetooth::shim::rust)]

mod ffi {

    extern "C" {

        include!("callbacks/callbacks.h");



        type u8SliceCallback;



        fn Run(&self, data: &[u8]);

    }



    extern "Rust" {

        fn hci_set_acl_callback(callback: UniquePtr<u8SliceCallback>);

        fn hci_send_command(data: &[u8]);

        fn hci_send_acl(data: &[u8]);

        fn hci_register_event(event: u8, callback: UniquePtr<u8SliceCallback>);

        fn hci_register_le_event(subevent: u8, callback: UniquePtr<u8SliceCallback>);

    }

}



fn hci_send_command(_data: &[u8]) {

}



fn hci_send_acl(_data: &[u8]) {

}



fn hci_register_event(_event: u8, _callback: cxx::UniquePtr<ffi::u8SliceCallback>) {

}



fn hci_register_le_event(_subevent: u8, _callback: cxx::UniquePtr<ffi::u8SliceCallback>) {

}



fn hci_set_acl_callback(_callback: cxx::UniquePtr<ffi::u8SliceCallback>) {

}