From 350f4b27e0b461dc9e08951427ad742a98f22cf7 Mon Sep 17 00:00:00 2001
From: Tom Seddon <tom@tmbp>
Date: Sun, 8 Sep 2019 13:36:11 +0100
Subject: [PATCH] Add destroyChip.

---
 netlist_sim.c | 38 ++++++++++++++++++++++++++++++++++++++
 netlist_sim.h |  1 +
 perfect6502.c |  6 ++++++
 perfect6502.h |  3 ++-
 4 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/netlist_sim.c b/netlist_sim.c
index eacf2af..8c1c672 100644
--- a/netlist_sim.c
+++ b/netlist_sim.c
@@ -599,6 +599,44 @@ setupNodesAndTransistors(netlist_transdefs *transdefs, BOOL *node_is_pullup, nod
 	return state;
 }
 
+void
+destroyNodesAndTransistors(state_t *state)
+{
+    free(state->nodes_pullup);
+    free(state->nodes_pulldown);
+    free(state->nodes_value);
+    for (count_t i = 0; i < state->nodes; i++) {
+        free(state->nodes_gates[i]);
+    }
+    free(state->nodes_gates);
+    for (count_t i = 0; i < state->nodes; i++) {
+        free(state->nodes_c1c2s[i]);
+    }
+    free(state->nodes_c1c2s);
+    free(state->nodes_gatecount);
+    free(state->nodes_c1c2count);
+    free(state->nodes_dependants);
+    free(state->nodes_left_dependants);
+    for (count_t i = 0; i < state->nodes; i++) {
+        free(state->nodes_dependant[i]);
+    }
+    free(state->nodes_dependant);
+    for (count_t i = 0; i < state->nodes; i++) {
+        free(state->nodes_left_dependant[i]);
+    }
+    free(state->nodes_left_dependant);
+    free(state->transistors_gate);
+    free(state->transistors_c1);
+    free(state->transistors_c2);
+    free(state->transistors_on);
+    free(state->list1);
+    free(state->list2);
+    free(state->listout_bitmap);
+    free(state->group);
+    free(state->groupbitmap);
+    free(state);
+}
+
 void
 stabilizeChip(state_t *state)
 {
diff --git a/netlist_sim.h b/netlist_sim.h
index b5bc066..6e96b84 100644
--- a/netlist_sim.h
+++ b/netlist_sim.h
@@ -3,6 +3,7 @@
 #endif
 
 state_t *setupNodesAndTransistors(netlist_transdefs *transdefs, BOOL *node_is_pullup, nodenum_t nodes, nodenum_t transistors, nodenum_t vss, nodenum_t vcc);
+void destroyNodesAndTransistors(state_t *state);
 void setNode(state_t *state, nodenum_t nn, BOOL s);
 BOOL isNodeHigh(state_t *state, nodenum_t nn);
 unsigned int readNodes(state_t *state, int count, nodenum_t *nodelist);
diff --git a/perfect6502.c b/perfect6502.c
index 6505191..4d29d6c 100644
--- a/perfect6502.c
+++ b/perfect6502.c
@@ -198,6 +198,12 @@ initAndResetChip()
 	return state;
 }
 
+void
+destroyChip(void *state)
+{
+    destroyNodesAndTransistors(state);
+}
+
 /************************************************************
  *
  * Tracing/Debugging
diff --git a/perfect6502.h b/perfect6502.h
index ef90243..2eb54ad 100644
--- a/perfect6502.h
+++ b/perfect6502.h
@@ -3,6 +3,7 @@
 #endif
 
 extern state_t *initAndResetChip();
+extern void destroyChip(state_t *state);
 extern void step(state_t *state);
 extern void chipStatus(state_t *state);
 extern unsigned short readPC(state_t *state);
@@ -19,4 +20,4 @@ extern unsigned char readIR(state_t *state);
 
 extern unsigned char memory[65536];
 extern unsigned int cycle;
-extern unsigned int transistors;
\ No newline at end of file
+extern unsigned int transistors;