moxie: configure with default-configs file

[qemu.git] / hw / irq.c

diff --git a/hw/irq.c b/hw/irq.c
index 4035a8cbff255423af0b48b11d93f7f3a8fa4da8..20785428ef00eff815b67a98a90a8816ccab9987 100644 (file)
--- a/hw/irq.c
+++ b/hw/irq.c
@@ -22,7 +22,7 @@
  * THE SOFTWARE.
  */
 #include "qemu-common.h"
-#include "irq.h"
+#include "hw/irq.h"
 
 struct IRQState {
     qemu_irq_handler handler;
@@ -38,28 +38,41 @@ void qemu_set_irq(qemu_irq irq, int level)
     irq->handler(irq->opaque, irq->n, level);
 }
 
-qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n)
+qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
+                           void *opaque, int n)
 {
     qemu_irq *s;
     struct IRQState *p;
     int i;
 
-    s = (qemu_irq *)qemu_mallocz(sizeof(qemu_irq) * n);
-    p = (struct IRQState *)qemu_mallocz(sizeof(struct IRQState) * n);
-    for (i = 0; i < n; i++) {
-        p->handler = handler;
-        p->opaque = opaque;
-        p->n = i;
+    if (!old) {
+        n_old = 0;
+    }
+    s = old ? g_renew(qemu_irq, old, n + n_old) : g_new(qemu_irq, n);
+    p = old ? g_renew(struct IRQState, s[0], n + n_old) :
+                g_new(struct IRQState, n);
+    for (i = 0; i < n + n_old; i++) {
+        if (i >= n_old) {
+            p->handler = handler;
+            p->opaque = opaque;
+            p->n = i;
+        }
         s[i] = p;
         p++;
     }
     return s;
 }
 
+qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n)
+{
+    return qemu_extend_irqs(NULL, 0, handler, opaque, n);
+}
+
+
 void qemu_free_irqs(qemu_irq *s)
 {
-    qemu_free(s[0]);
-    qemu_free(s);
+    g_free(s[0]);
+    g_free(s);
 }
 
 static void qemu_notirq(void *opaque, int line, int level)
@@ -85,8 +98,39 @@ static void qemu_splitirq(void *opaque, int line, int level)
 
 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2)
 {
-    qemu_irq *s = qemu_mallocz(2 * sizeof(qemu_irq));
+    qemu_irq *s = g_malloc0(2 * sizeof(qemu_irq));
     s[0] = irq1;
     s[1] = irq2;
     return qemu_allocate_irqs(qemu_splitirq, s, 1)[0];
 }
+
+static void proxy_irq_handler(void *opaque, int n, int level)
+{
+    qemu_irq **target = opaque;
+
+    if (*target) {
+        qemu_set_irq((*target)[n], level);
+    }
+}
+
+qemu_irq *qemu_irq_proxy(qemu_irq **target, int n)
+{
+    return qemu_allocate_irqs(proxy_irq_handler, target, n);
+}
+
+void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n)
+{
+    int i;
+    qemu_irq *old_irqs = qemu_allocate_irqs(NULL, NULL, n);
+    for (i = 0; i < n; i++) {
+        *old_irqs[i] = *gpio_in[i];
+        gpio_in[i]->handler = handler;
+        gpio_in[i]->opaque = old_irqs;
+    }
+}
+
+void qemu_irq_intercept_out(qemu_irq **gpio_out, qemu_irq_handler handler, int n)
+{
+    qemu_irq *old_irqs = *gpio_out;
+    *gpio_out = qemu_allocate_irqs(handler, old_irqs, n);
+}