mkernel misaligned pointer dereference on trapframe

[stemnic]

Things seems to have changed in two years and now the trap frame does not seem to be aligned for some reason

-----------------------
 rustyvisor
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[INFO] logger was initialized
[INFO] processor is in m-mode running with hartid: 2147483676
[INFO] Initing heap implementation: 0x0000000082322000 -> 0x0000000082332000 size: 0x0000000000010000
[rustsbi-dtb] Hart count: cluster0 with 1 cores
[INFO] jump to hypervisor while chainging CPU mode from M to HS
[INFO] Current mepc addr 0x80100580
[INFO] hypervisor started
[INFO] environment call from HS-mode at 0x000000008010adba
abort: line 174, file hypervisor/src/mkernel.rs: misaligned pointer dereference: address must be a multiple of 0x8 but is 0x8000001c

rustyvisor/hypervisor/src/mkernel.rs

Lines 132 to 144 in 518fa08

	#[no_mangle]
	pub extern "C" fn rust_mtrap_handler(
	mepc: usize, // a0
	mtval: usize, // a1
	mcause: usize, // a2
	mstatus: usize, // a3
	frame: *mut TrapFrame, // a4
	) -> usize {
	log::debug!("trapped to M-mode!");
	log::debug!("Machine trap cause {:#x}", mcause);
	log::debug!("Machine trap mepc {:#x}", mepc);
	log::debug!("Machine trap mstatus {:#x}", mstatus);

rustyvisor/hypervisor/src/mkernel.rs

Lines 171 to 177 in 518fa08

	match cause_code {
	9 => {
	log::info!("environment call from HS-mode at 0x{:016x}", mepc);
	let hypervisor_frame = unsafe{*frame.clone()};
	let a1 = hypervisor_frame.regs[11];
	let a0 = hypervisor_frame.regs[10];
	let mut result = 0;