avoiding compiler problems when building a kernel with debug symbols

librs/Cargo.toml

@@ -34,7 +34,7 @@ memcpy = true
 
 # The development profile, used for `cargo build`.
 [profile.dev]
-opt-level = 0      # controls the `--opt-level` the compiler builds with
+opt-level = 1      # controls the `--opt-level` the compiler builds with
 debug = true       # controls whether the compiler passes `-C debuginfo`
                    # a value of `true` is equivalent to `2`
 rpath = false      # controls whether the compiler passes `-C rpath`

librs/src/arch/x86_64/kernel/switch.rs

@@ -24,7 +24,7 @@
 
 #[inline(never)]
 #[naked]
-pub extern "C" fn switch(old_stack: *mut usize, new_stack: usize) {
+pub extern "C" fn switch(_old_stack: *mut usize, _new_stack: usize) {
 	// rdi = old_stack => the address to store the old rsp
 	// rsi = new_stack => stack pointer of the new task
 
@@ -77,7 +77,7 @@ pub extern "C" fn switch(old_stack: *mut usize, new_stack: usize) {
 			pop %rdx\n\t\
 			pop %rcx\n\t\
 			pop %rax\n\t\
-			popfq" :: "r{rdi}"(old_stack as u64), "r{rsi}"(new_stack as u64):: "volatile"
+			popfq" :::: "volatile"
 		);
 	}
 }