iocall

ka/main.k

@@ -13,6 +13,8 @@ main:
     mov ax0, .buf
     call print
 
+    iocall 0, 0
+
     leave
     ret
 

vm/dv/cpu.c

@@ -3,6 +3,23 @@
 
 #include <dv/dev.h>
 
+void cpudev_testfn(ctx_t *ctx, dev_t *dev)
+{
+    assert(dev == &cpudev);
+
+    rax = 4;
+    rdx = 3;
+}
+
+void cpudev_poweron(ctx_t *ctx, dev_t *dev)
+{
+    assert(dev == &cpudev);
+
+    dev->fslots[0] = cpudev_testfn;
+
+    dev->state = DEVGOOD;
+}
+
 dev_t cpudev =
 {
     .type = "cpu",
@@ -13,5 +30,7 @@ dev_t cpudev =
     .major = 0,
     .minor = 1,
     .revis = 0,
+
+    .fpwon = cpudev_poweron,
 };
 

vm/dv/devctl.c

@@ -85,6 +85,20 @@ IMPL_END;
 IMPL_START_2(iocall)
 {
     CHK_SUPERV();
+
+    dev_t *dev = devctl_common(ctx, v1, v2);  
+
+    if (dev == NULL)
+        return;
+
+    if (v2 >= DEVSLOTS)
+        rax = -6;
+
+    else if (dev->fslots[v2] == NULL)
+        rax = -6;
+
+    else
+        dev->fslots[v2](ctx, dev); 
 }
 IMPL_END;