Merge pull request #319 from hermit-os/clippy

fix: clippy

Author: mkroening

Cargo.lock

@@ -10,7 +10,9 @@ edition = "2021"
 align-address = "0.1"
 hermit-entry = { version = "0.9", features = ["loader"] }
 log = "0.4"
+one-shot-mutex = "0.1"
 sptr = "0.3"
+take-static = "0.1"
 vm-fdt = { version = "0.3", default-features = false, features = ["alloc"] }
 
 [features]

Cargo.toml

@@ -81,7 +81,7 @@ pub fn output_message_byte(byte: u8) {
 }
 
 pub unsafe fn get_memory(_memory_size: u64) -> u64 {
-	(ptr::addr_of!(kernel_end).addr() as u64).align_up(LargePageSize::SIZE as u64)
+	(unsafe { ptr::addr_of!(kernel_end) }.addr() as u64).align_up(LargePageSize::SIZE as u64)
 }
 
 pub fn find_kernel() -> &'static [u8] {
@@ -159,21 +159,21 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 	for i in pgt_slice.iter_mut() {
 		*i = 0;
 	}
-	pgt_slice[0] = ptr::addr_of!(l1_pgtable).addr() as u64 + PT_PT;
-	pgt_slice[511] = ptr::addr_of!(l0_pgtable).addr() as u64 + PT_PT + PT_SELF;
+	pgt_slice[0] = unsafe { ptr::addr_of!(l1_pgtable) }.addr() as u64 + PT_PT;
+	pgt_slice[511] = unsafe { ptr::addr_of!(l0_pgtable) }.addr() as u64 + PT_PT + PT_SELF;
 
 	let pgt_slice = unsafe { core::slice::from_raw_parts_mut(ptr::addr_of_mut!(l1_pgtable), 512) };
 	for i in pgt_slice.iter_mut() {
 		*i = 0;
 	}
-	pgt_slice[0] = ptr::addr_of!(l2_pgtable).addr() as u64 + PT_PT;
-	pgt_slice[1] = ptr::addr_of!(l2k_pgtable).addr() as u64 + PT_PT;
+	pgt_slice[0] = unsafe { ptr::addr_of!(l2_pgtable) }.addr() as u64 + PT_PT;
+	pgt_slice[1] = unsafe { ptr::addr_of!(l2k_pgtable) }.addr() as u64 + PT_PT;
 
 	let pgt_slice = unsafe { core::slice::from_raw_parts_mut(ptr::addr_of_mut!(l2_pgtable), 512) };
 	for i in pgt_slice.iter_mut() {
 		*i = 0;
 	}
-	pgt_slice[0] = ptr::addr_of!(l3_pgtable).addr() as u64 + PT_PT;
+	pgt_slice[0] = unsafe { ptr::addr_of!(l3_pgtable) }.addr() as u64 + PT_PT;
 
 	let pgt_slice = unsafe { core::slice::from_raw_parts_mut(ptr::addr_of_mut!(l3_pgtable), 512) };
 	for i in pgt_slice.iter_mut() {
@@ -187,8 +187,9 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 		*i = 0;
 	}
 	for (i, pgt_slice) in pgt_slice.iter_mut().enumerate().take(10) {
-		*pgt_slice =
-			ptr::addr_of!(L0mib_pgtable).addr() as u64 + (i * BasePageSize::SIZE) as u64 + PT_PT;
+		*pgt_slice = unsafe { ptr::addr_of!(L0mib_pgtable) }.addr() as u64
+			+ (i * BasePageSize::SIZE) as u64
+			+ PT_PT;
 	}
 
 	let pgt_slice =
@@ -227,7 +228,12 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 	}
 
 	let current_stack_address = load_info.kernel_image_addr_range.start - KERNEL_STACK_SIZE as u64;
-	pub static mut BOOT_INFO: Option<RawBootInfo> = None;
+
+	take_static::take_static! {
+		static RAW_BOOT_INFO: Option<RawBootInfo> = None;
+	}
+
+	let raw_boot_info = RAW_BOOT_INFO.take().unwrap();
 
 	let dtb = unsafe {
 		Dtb::from_raw(sptr::from_exposed_addr(DEVICE_TREE as usize))
@@ -246,22 +252,19 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 	let ram_start = u64::from_be_bytes(start_slice.try_into().unwrap());
 	let ram_size = u64::from_be_bytes(size_slice.try_into().unwrap());
 
-	let boot_info = {
-		let boot_info = BootInfo {
-			hardware_info: HardwareInfo {
-				phys_addr_range: ram_start..ram_start + ram_size,
-				serial_port_base: SerialPortBase::new(0x1000),
-				device_tree: core::num::NonZeroU64::new(DEVICE_TREE),
-			},
-			load_info,
-			platform_info: PlatformInfo::LinuxBoot,
-		};
-		RawBootInfo::from(boot_info)
+	let boot_info = BootInfo {
+		hardware_info: HardwareInfo {
+			phys_addr_range: ram_start..ram_start + ram_size,
+			serial_port_base: SerialPortBase::new(0x1000),
+			device_tree: core::num::NonZeroU64::new(DEVICE_TREE),
+		},
+		load_info,
+		platform_info: PlatformInfo::LinuxBoot,
 	};
 
-	unsafe {
-		BOOT_INFO = Some(boot_info);
-	}
+	info!("boot_info = {boot_info:#?}");
+	let boot_info_ptr = raw_boot_info.insert(RawBootInfo::from(boot_info));
+	info!("boot_info at {boot_info_ptr:p}");
 
 	// Jump to the kernel entry point and provide the Multiboot information to it.
 	info!(
@@ -291,7 +294,7 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 			"br {entry}",
 			stack_address = in(reg) current_stack_address,
 			entry = in(reg) entry_point,
-			in("x0") BOOT_INFO.as_ref().unwrap(),
+			in("x0") boot_info_ptr,
 			in("x1") 0,
 			options(noreturn)
 		)

src/arch/aarch64/mod.rs

@@ -100,47 +100,45 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 
 	info!("hart_id = {}", start::get_hart_id());
 
-	static mut BOOT_INFO: Option<RawBootInfo> = None;
-
-	let boot_info = {
-		let phys_addr_range = {
-			let memory = fdt.memory();
-			let mut regions = memory.regions();
-
-			let mem_region = regions.next().unwrap();
-			assert!(
-				regions.next().is_none(),
-				"hermit-loader can only handle one memory region yet"
-			);
-
-			let mem_base = u64::try_from(mem_region.starting_address.addr()).unwrap();
-			let mem_size = u64::try_from(mem_region.size.unwrap()).unwrap();
-			mem_base..mem_base + mem_size
-		};
-
-		let device_tree = {
-			let fdt_addr = start::get_fdt_ptr().expose_addr();
-			DeviceTreeAddress::new(fdt_addr.try_into().unwrap())
-		};
-
-		let boot_info = BootInfo {
-			hardware_info: HardwareInfo {
-				phys_addr_range,
-				serial_port_base: None,
-				device_tree,
-			},
-			load_info,
-			platform_info: PlatformInfo::LinuxBoot,
-		};
-
-		info!("boot_info = {boot_info:#?}");
-
-		RawBootInfo::from(boot_info)
+	take_static::take_static! {
+		static RAW_BOOT_INFO: Option<RawBootInfo> = None;
+	}
+
+	let raw_boot_info = RAW_BOOT_INFO.take().unwrap();
+
+	let phys_addr_range = {
+		let memory = fdt.memory();
+		let mut regions = memory.regions();
+
+		let mem_region = regions.next().unwrap();
+		assert!(
+			regions.next().is_none(),
+			"hermit-loader can only handle one memory region yet"
+		);
+
+		let mem_base = u64::try_from(mem_region.starting_address.addr()).unwrap();
+		let mem_size = u64::try_from(mem_region.size.unwrap()).unwrap();
+		mem_base..mem_base + mem_size
 	};
 
-	unsafe {
-		BOOT_INFO = Some(boot_info);
-	}
+	let device_tree = {
+		let fdt_addr = start::get_fdt_ptr().expose_addr();
+		DeviceTreeAddress::new(fdt_addr.try_into().unwrap())
+	};
+
+	let boot_info = BootInfo {
+		hardware_info: HardwareInfo {
+			phys_addr_range,
+			serial_port_base: None,
+			device_tree,
+		},
+		load_info,
+		platform_info: PlatformInfo::LinuxBoot,
+	};
+
+	info!("boot_info = {boot_info:#?}");
+	let boot_info_ptr = raw_boot_info.insert(RawBootInfo::from(boot_info));
+	info!("boot_info at {boot_info_ptr:p}");
 
 	// Check expected signature of entry function
 	let entry: Entry = {
@@ -158,7 +156,7 @@ pub unsafe fn boot_kernel(kernel_info: LoadedKernel) -> ! {
 			entry = in(reg) entry,
 			stack = in(reg) start::get_stack_ptr(),
 			in("a0") start::get_hart_id(),
-			in("a1") BOOT_INFO.as_ref().unwrap(),
+			in("a1") boot_info_ptr,
 			options(noreturn)
 		)
 	}

src/arch/riscv64/mod.rs

@@ -3,14 +3,15 @@ use alloc::format;
 use multiboot::information::{MemoryType, Multiboot};
 use vm_fdt::{Error as FdtError, FdtWriter};
 
-use super::{mb_info, MEM};
+use super::{mb_info, Mem};
 
 pub struct DeviceTree;
 
 impl DeviceTree {
 	#[cfg(all(target_os = "none", not(feature = "fc")))]
 	pub fn create() -> Result<&'static [u8], FdtError> {
-		let multiboot = unsafe { Multiboot::from_ptr(mb_info as u64, &mut MEM).unwrap() };
+		let mut mem = Mem;
+		let multiboot = unsafe { Multiboot::from_ptr(mb_info as u64, &mut mem).unwrap() };
 
 		let all_regions = multiboot
 			.memory_regions()