HVM support for forwarding events to ROS

[palacios.git] / palacios / src / palacios / vmm_hvm.c

diff --git a/palacios/src/palacios/vmm_hvm.c b/palacios/src/palacios/vmm_hvm.c
index 26d3298..ff5b34f 100644 (file)
--- a/palacios/src/palacios/vmm_hvm.c
+++ b/palacios/src/palacios/vmm_hvm.c
@@ -157,9 +157,34 @@ static int hvm_hcall_handler(struct guest_info * core , hcall_id_t hcall_id, voi
            
        case 0xf: // get HRT state
            core->vm_regs.rax = h->trans_state;
+           if (v3_write_gva_memory(core, a2, sizeof(h->ros_event), (uint8_t*) &h->ros_event)!=sizeof(h->ros_event)) { 
+               PrintError(core->vm_info, core, "hvm: cannot write back ROS event state to %p - continuing\n",(void*)a2);
+           }
            //PrintDebug(core->vm_info,core,"hvm: get HRT transaction state 0x%llx\n",core->vm_regs.rax);
            break;
 
+       case 0x10:
+           PrintDebug(core->vm_info, core, "hvm: ROS event request\n");
+           if (h->ros_event.event_type!=ROS_NONE) { 
+               PrintError(core->vm_info, core, "hvm: ROS event is already in progress\n");
+               core->vm_regs.rax = -1;
+           } else {
+               if (v3_read_gva_memory(core, a2, sizeof(h->ros_event), (uint8_t*)&h->ros_event)!=sizeof(h->ros_event)) { 
+                   PrintError(core->vm_info, core, "hvm: cannot read ROS event from %p\n",(void*)a2);
+                   core->vm_regs.rax = -1;
+               } else {
+                   core->vm_regs.rax = 0;
+               }
+           }
+
+           break;
+
+       case 0x1f:
+           PrintDebug(core->vm_info, core, "hvm: completion of ROS event (rc=0x%llx)\n",a2);
+           h->ros_event.event_type=ROS_NONE;
+           h->ros_event.last_ros_event_result = a2;
+           break;
+
        case 0x20: // invoke function (ROS->HRT)
        case 0x21: // invoke parallel function (ROS->HRT)
            if (v3_is_hvm_hrt_core(core)) {