Add alloc

loader/Cargo.lock

@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "alloc-traits"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b2d54853319fd101b8dd81de382bcbf3e03410a64d8928bbee85a3e7dcde483"
+
 [[package]]
 name = "bit_field"
 version = "0.10.2"
@@ -48,6 +54,7 @@ dependencies = [
  "com_logger",
  "elf",
  "log",
+ "static-alloc",
  "uefi",
  "x86_64",
 ]
@@ -111,6 +118,15 @@ version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
+[[package]]
+name = "static-alloc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2975e035ce16539eecee08d7c6e5626ca26f299c6e90af343b302c6dd2e61e"
+dependencies = [
+ "alloc-traits",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"

loader/Cargo.toml

@@ -7,5 +7,6 @@ edition = "2021"
 com_logger = { git = "https://git.strypsteen.com/mathieu/com_logger", version = "0.1.1" }
 elf = {version = "0.7.4", default-features = false}
 log = "0.4.22"
+static-alloc = "0.2.5"
 uefi = {version = "0.28.0"}
-x86_64 = {version = "0.15.1", default-features = false}
+x86_64 = {version = "0.15.1", default-features = false, features = ["instructions"]}

loader/src/main.rs

@@ -1,10 +1,13 @@
 #![no_main]
 #![no_std]
 
+extern crate alloc;
+
 use core::panic::PanicInfo;
 
 use elf::load_kernel;
 use log::{error, info};
+use static_alloc::Bump;
 use uefi::{
     entry,
     table::{boot::MemoryType, Boot, SystemTable},
@@ -13,13 +16,16 @@ use uefi::{
 
 mod elf;
 
+#[global_allocator]
+static A: Bump<[u8; 8 * 1024 * 1024]> = Bump::uninit();
+
 const KERNEL: &[u8] = include_bytes!("../../kernel/target/x86_64-unknown-none/release/kernel");
 
 #[entry]
 fn main(image_handle: Handle, mut system_table: SystemTable<Boot>) -> Status {
     com_logger::init();
-    uefi::helpers::init(&mut system_table).unwrap();
     info!("Starting bootloader...");
+    uefi::helpers::init(&mut system_table).unwrap();
     load_kernel(KERNEL, &system_table);
     let _memory_map = system_table.exit_boot_services(MemoryType::LOADER_DATA).1;
     loop {}