interrupts: Send the process being interrupted back into waiting state

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/interrupts.zig b/src/lib/interrupts.zig
index 3b1884d..3a012c3 100644
--- a/src/lib/interrupts.zig
+++ b/src/lib/interrupts.zig
@@ -140,6 +140,9 @@ export fn handleTrap(epc: usize, tval: usize, cause_bits: usize, frame: *trap.Fr
             },
         }
     } else {
+        const proc = &process.list.last.?.data;
+        proc.state = .waiting;
+
         switch (@as(SyncCause, @enumFromInt(cause.num))) {
             .illegal_instruction => {
                 std.debug.panic("Hart {d}: Illegal instruction, EPC = 0x{x:0>16}", .{ frame.hart_id, epc });
@@ -154,7 +157,6 @@ export fn handleTrap(epc: usize, tval: usize, cause_bits: usize, frame: *trap.Fr
                 std.debug.panic("Hart {d}: Store/AMO access fault: EPC = 0x{x:0>16}, TVAL = 0x{x:0>16}", .{ frame.hart_id, epc, tval });
             },
             .ecall => {
-                const proc = &process.list.last.?.data;
                 syscall.handler(proc, frame) catch |err| switch (err) {
                     syscall.Error.UnknownSyscall => {
                         const a7 = frame.general_purpose_registers[17];