Added stack trace on panic

.cargo/config.toml

@@ -1,10 +1,11 @@
 [unstable]
 build-std = ["core", "compiler_builtins", "alloc"]
 build-std-features = ["compiler-builtins-mem"]
-panic-abort-tests = true # Or remove this from Cargo.toml: `panic = "abort"`
+panic-abort-tests = true                           # Or remove this from Cargo.toml: `panic = "abort"`
 
 [build]
 target = "x86_64-infinity_os.json"
+rustflags = ["-C", "force-frame-pointers=yes"]
 
 [target.'cfg(target_os = "none")']
-runner = "bootimage runner"
+runner = "bootimage runner"

src/kernel/debug/mod.rs

@@ -0,0 +1 @@
+pub mod stack_trace;

src/kernel/debug/stack_trace.rs

@@ -0,0 +1,20 @@
+use crate::print;
+use core::arch::asm;
+
+#[repr(C)]
+struct StackFrame {
+    rbp: *const StackFrame,
+    rip: usize,
+}
+
+pub fn walk_stack() {
+    let mut frame: *const StackFrame;
+    unsafe {
+        asm!("mov {}, rbp", out(reg) frame);
+    }
+
+    while let Some(stack_frame) = unsafe { frame.as_ref() } {
+        print!("Function address: {:#x}\n", stack_frame.rip);
+        frame = stack_frame.rbp;
+    }
+}

src/kernel/mod.rs

@@ -1,5 +1,6 @@
 pub mod allocator;
 pub mod clock;
+pub mod debug;
 pub mod gdt;
 pub mod interrupts;
 pub mod memory;

src/main.rs

@@ -35,5 +35,6 @@ pub fn kernel_main(boot_info: &'static BootInfo) -> ! {
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {
     print!("{}\n", info);
+    kernel::debug::stack_trace::walk_stack();
     infinity_os::hlt_loop();
 }