exvs2: fix JVS-related crash

board/najv4.c

@@ -192,6 +192,7 @@ void najv4_init(
     najv4->jvs.next = next;
     najv4->jvs.transact = najv4_transact;
     najv4->jvs.sense = najv4_sense;
+    najv4->jvs.sense_out = true;
     najv4->addr = 0xFF;
     najv4->ops = ops;
     najv4->ops_ctx = ops_ctx;
@@ -697,6 +698,7 @@ static HRESULT najv4_cmd_reset(struct najv4 *najv4, struct const_iobuf *req_buf)
 
     dprintf("JVS I/O: Reset (param %02x)\n", req.unknown);
     najv4->addr = 0xFF;
+    najv4->jvs.sense_out = true;
 
     if (najv4->ops->reset != NULL) {
         najv4->ops->reset(najv4->ops_ctx);
@@ -731,6 +733,7 @@ static HRESULT najv4_cmd_assign_addr(
     }
 
     najv4->addr = req.addr;
+    najv4->jvs.sense_out = false;
 
     return iobuf_write_8(resp_buf, 0x01);
 }

jvs/jvs-bus.h

@@ -13,6 +13,7 @@ struct jvs_node {
             size_t nbytes,
             struct iobuf *resp);
     bool (*sense)(struct jvs_node *node);
+    bool sense_out;
 };
 
 void jvs_bus_transact(

platform/jvs.c

@@ -1,4 +1,10 @@
 #include <windows.h>
+#ifdef __GNUC__
+#include <ntdef.h>
+#else
+#include <winnt.h>
+#endif
+#include <ntddser.h>
 
 #include <assert.h>
 #include <process.h>
@@ -85,6 +91,16 @@ static HRESULT jvs_handle_irp_locked(struct irp *irp)
         }
     }
 
+    if (irp->op == IRP_OP_IOCTL) {
+        switch (irp->ioctl) {
+            case IOCTL_SERIAL_GET_MODEMSTATUS: 
+                jvs_uart.cts_on = !jvs_root->sense_out; // WAJVIO.dll is cool
+                dprintf("JVS: Set CTS to %X\n", jvs_uart.cts_on);
+                break;
+            default: break;
+        }
+    }
+
     hr = uart_handle_irp(&jvs_uart, irp);
 
     if (FAILED(hr) || irp->op != IRP_OP_WRITE) {

subprojects/capnhook.wrap

@@ -1,4 +1,4 @@
 [wrap-git]
 directory = capnhook
 url = https://github.com/Hay1tsme/capnhook
-revision = b595e4bf8a274ba3bdaf583e13a7ebc7efe0f48f
+revision = cbffaed8041fd675685236781f2042339f54202f