ARM: it compiles but does not yet run :V

kernel/lds/aarch64-qemu.ld

@@ -0,0 +1,14 @@
+ENTRY(_start)
+SECTIONS
+{
+    . = 0x40080000;
+    .text.boot : { *(.text.boot) }
+    .text : { *(.text) }
+    .data : { *(.data) }
+    .rodata : { *(.rodata) }
+    .bss : { *(.bss) }
+
+    . = ALIGN(8);
+    . = . + 0x4000;
+    LD_STACK_PTR = .;
+}

kernel/src/arch/aarch64/mod.rs

@@ -1,4 +1,27 @@
 //!
-
+use core::ptr;
 #[no_mangle]
-unsafe extern "C" fn _kernel_start() -> ! {}
+unsafe extern "C" fn _kernel_start() -> ! {
+    const UART0: *mut u8 = 0x0900_0000 as *mut u8;
+    let out_str = b"AArch64 Bare Metal";
+    for byte in out_str {
+        unsafe {
+            ptr::write_volatile(UART0, *byte);
+        }
+    }
+
+    loop {}
+}
+
+pub fn log(_args: core::fmt::Arguments<'_>) -> core::fmt::Result {
+    panic!()
+}
+
+pub fn sloop() -> ! {
+    loop {}
+}
+pub fn hardware_random_u64() -> u64 {
+    0
+}
+
+pub const PAGE_SIZE: usize = 10;

kernel/targets/aarch64-virt-ableos.json

@@ -10,7 +10,7 @@
     "linker-is-gnu": true,
     "pre-link-args": {
         "ld.lld": [
-            "-Taarch64-qemu.ld"
+            "-Tkernel/lds/aarch64-qemu.ld"
         ]
     },
     "llvm-target": "aarch64-unknown-none",

repbuild/src/main.rs

@@ -225,7 +225,8 @@ fn run(release: bool, target: Target) -> Result<(), Error> {
     if target == Target::Aarch64 {
         com.args([
             "-M", "virt", "-m", //
-            "128M", "-serial", "stdio",
+            "128M",
+            // "-serial", "stdio",
         ]);
     }