Better user programs with a special std. Sleep and exit are calling scheduler instead of wfi.

justfile

@@ -3,16 +3,23 @@ cargo_flags := if release != "" { "--release" } else { "" }
 
 default: run
 
-build_user_prog prog:
-    cd {{ "user" / prog }} && \
-    RUSTFLAGS="-C relocation-model=pic" cargo b {{ cargo_flags }}
-    riscv64-elf-objcopy -O binary {{ "target/riscv64/debug" / prog }} {{ "user" / prog / prog + ".mem" }}
+mount_filesystem:
+    # Add some permissions to be able to do next operations without sudo
+    @mountpoint -q mnt || sudo mount -o umask=0022,gid=$(id -g $USER),uid=$(id -u $USER) disk.img mnt
 
-build: (map_dir "user" "build_user_prog")
+sync_filesystem:
+    sync
+
+build_user_prog prog:
+    RUSTFLAGS="-C relocation-model=pic -C link-arg=-Tilm.ld" cargo b {{ cargo_flags }} --package {{ prog }}
+    riscv64-elf-objcopy -O binary {{ "target/riscv64/debug" / prog }} {{ "mnt/usr/bin" / prog }}
+
+build: mount_filesystem (map_dir "user" "build_user_prog")
     cargo b {{ cargo_flags }}
+    just sync_filesystem
 
 run: build
-    cargo r {{ cargo_flags }} --bin kernel-rust
+    cargo r {{ cargo_flags }}
 
 map_dir dir recipe:
     @for file in `ls {{ dir }}`; do \