Allow procmgr to recognize unhandled exceptions.

src/syscall/debug.rs

@@ -208,7 +208,7 @@ impl SyscallDebugInfo {
 }
 #[cfg(feature = "syscall_debug")]
 pub fn debug_start([a, b, c, d, e, f]: [usize; 6]) {
-    let do_debug = if crate::context::current().read().name.contains("bash") {
+    let do_debug = if false && crate::context::current().read().name.contains("bash") {
         if a == SYS_CLOCK_GETTIME || a == SYS_YIELD || a == SYS_FUTEX {
             false
         } else if (a == SYS_WRITE || a == SYS_FSYNC) && (b == 1 || b == 2) {

src/syscall/mod.rs

@@ -216,7 +216,7 @@ pub fn syscall(a: usize, b: usize, c: usize, d: usize, e: usize, f: usize) -> us
     percpu.inside_syscall.set(false);
 
     if percpu.switch_internals.being_sigkilled.get() {
-        exit_this_context();
+        exit_this_context(None);
     }
 
     // errormux turns Result<usize> into -errno

src/syscall/process.rs

@@ -23,7 +23,7 @@ use crate::{
 
 use super::usercopy::UserSliceWo;
 
-pub fn exit_this_context() -> ! {
+pub fn exit_this_context(excp: Option<syscall::Exception>) -> ! {
     let close_files;
     let addrspace_opt;
 
@@ -49,7 +49,7 @@ pub fn exit_this_context() -> ! {
     // TODO: Should status == Status::HardBlocked be handled differently?
     let owner = {
         let mut guard = context_lock.write();
-        guard.status = context::Status::Dead;
+        guard.status = context::Status::Dead { excp };
         guard.owner_proc_id
     };
     if let Some(owner) = owner {