diff --git a/src/debugger.rs b/src/debugger.rs index 98ce65e4d7e7403a679b451a8294a376af5a6c7f..2c92efaca105529a9d16dc02b4f5353e237ba0b7 100644 --- a/src/debugger.rs +++ b/src/debugger.rs @@ -1,9 +1,80 @@ use crate::paging::{RmmA, RmmArch, TableKind}; -#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))] +//TODO: combine arches into one function (aarch64 one is newest) + +// Super unsafe due to page table switching and raw pointers! +#[cfg(target_arch = "aarch64")] pub unsafe fn debugger(target_id: Option<crate::context::ContextId>) { - println!("DEBUGGER TODO"); + println!("DEBUGGER START"); println!(); + + let old_table = RmmA::table(TableKind::User); + + for (id, context_lock) in crate::context::contexts().iter() { + if target_id.map_or(false, |target_id| *id != target_id) { continue; } + let context = context_lock.read(); + println!("{}: {}", (*id).into(), context.name.read()); + + println!("status: {:?}", context.status); + if ! context.status_reason.is_empty() { + println!("reason: {}", context.status_reason); + } + + // Switch to context page table to ensure syscall debug and stack dump will work + if let Some(ref space) = context.addr_space { + RmmA::set_table(TableKind::User, space.read().table.utable.table().phys()); + + if let Some((a, b, c, d, e, f)) = context.syscall { + println!("syscall: {}", crate::syscall::debug::format_call(a, b, c, d, e, f)); + } + + { + let space = space.read(); + if ! space.grants.is_empty() { + println!("grants:"); + for grant in space.grants.iter() { + let region = grant.region(); + println!( + " virt 0x{:016x}:0x{:016x} size 0x{:08x} {}", + region.start_address().data(), region.final_address().data(), region.size(), + if grant.is_owned() { "owned" } else { "borrowed" }, + ); + } + } + } + + if let Some(regs) = crate::ptrace::regs_for(&context) { + println!("regs:"); + regs.dump(); + + let mut sp = regs.iret.sp_el0; + println!("stack: {:>016x}", sp); + //Maximum 64 usizes + for _ in 0..64 { + if context.addr_space.as_ref().map_or(false, |space| space.read().table.utable.translate(crate::paging::VirtualAddress::new(sp)).is_some()) { + let value = *(sp as *const usize); + println!(" {:>016x}: {:>016x}", sp, value); + if let Some(next_sp) = sp.checked_add(core::mem::size_of::<usize>()) { + sp = next_sp; + } else { + println!(" {:>016x}: OVERFLOW", sp); + break; + } + } else { + println!(" {:>016x}: GUARD PAGE", sp); + break; + } + } + } + + // Switch to original page table + RmmA::set_table(TableKind::User, old_table); + } + + println!(); + } + + println!("DEBUGGER END"); } // Super unsafe due to page table switching and raw pointers!