fix: fix mount module

byteos.toml

@@ -14,6 +14,9 @@ run = "make ARCH=x86_64 justrun"
     board = "qemu"
     driver = "kvirtio,kgoldfish-rtc,ns16550a"
 
+    [bin.x86_64-qemu.env]
+    HEAP_SIZE = "0x0200_0000"
+
 # build for aarch64-qemu
 [bin.aarch64-qemu]
 target = "aarch64-unknown-none-softfloat"

crates/kramdisk/build.rs

@@ -1,13 +1,35 @@
 #![feature(lazy_cell)]
 
+use std::{env, fs, path::PathBuf};
+
 #[allow(unused_macros)]
 macro_rules! display {
     ($fmt:expr) => (println!("cargo:warning={}", format!($fmt)));
     ($fmt:expr, $($arg:tt)*) => (println!(concat!("cargo:warning=", $fmt), $($arg)*));
 }
 
 fn main() {
+    let out_dir = PathBuf::from(env::var("OUT_DIR").expect("can't find manifest dir"));
+    let img_path = env::var("MOUNT_IMG_PATH").unwrap_or("mount.img".into());
+
+    fs::write(
+        out_dir.join("inc.S"),
+        format!(
+            ".section .data
+    .global ramdisk_start
+    .global ramdisk_end
+    .align 16
+    ramdisk_start:
+    .incbin \"{img_path}\"
+    ramdisk_end:"
+        ),
+    )
+    .expect("can't write ram file to out_dir");
+
+    // fs::write(path, contents)
+
     // write module configuration to OUT_PATH, then it will be included in the main.rs
+    println!("cargo:rerun-if-env-changed=MOUNT_IMG_PATH");
     println!("cargo:rerun-if-changed=mount.img");
     println!("cargo:rerun-if-changed=build.rs");
 }

crates/kramdisk/src/lib.rs

@@ -64,17 +64,7 @@ impl BlkDriver for RamDiskBlock {
     }
 }
 
-global_asm!(
-    "
-    .section .data
-    .global ramdisk_start
-    .global ramdisk_end
-    .align 16
-    ramdisk_start:
-    .incbin \"./mount.img\"
-    ramdisk_end:
-"
-);
+global_asm!(include_str!(concat!(env!("OUT_DIR"), "/inc.S")));
 
 driver_define!({
     extern "C" {

kernel/Cargo.toml

@@ -13,7 +13,7 @@ serde = "1.0.136"
 serde_derive = "1.0.136"
 
 [dependencies]
-allocator = { git = "https://github.com/Byte-OS/allocator.git" }
+allocator = { git = "https://github.com/Byte-OS/allocator.git", rev = "c6ce949146d5feab1d406502b19b035f5d392c35"}
 crate_interface = { git = "https://github.com/Byte-OS/crate_interface.git" }
 frame_allocator = { git = "https://github.com/Byte-OS/bit_frame_allocator.git" }
 logging = { git = "https://github.com/Byte-OS/logging.git" }

kernel/src/main.rs

@@ -162,6 +162,8 @@ impl ArchInterface for ArchInterfaceImpl {
                 fn end();
             }
 
+            println!("HEAP_SIZE: {:#x}", allocator::HEAP_SIZE);
+
             println!("run kernel @ hart {}", hart_id);
 
             info!("program size: {}KB", (end as usize - start as usize) / 1024);