A5

A5/ip_reg.c

@@ -0,0 +1,48 @@
+/*
+  Implementation of x86prime 16 registers
+*/
+
+#include "ip_reg.h"
+#include "support.h"
+#include "trace_read.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+struct ip_register {
+    trace_p tracer;
+    val data;
+};
+
+ip_reg_p ip_reg_create() {
+    ip_reg_p ip_reg = (ip_reg_p) malloc(sizeof(struct ip_register));
+    ip_reg->data = from_int(0);
+    ip_reg->tracer = 0;
+    return ip_reg;
+}
+
+void ip_reg_destroy(ip_reg_p ip_reg) {
+    if (ip_reg->tracer) {
+        if (!trace_all_matched(ip_reg->tracer))
+            error("Parts of trace for instruction pointer writes was not matched");
+        trace_reader_destroy(ip_reg->tracer);
+    }
+    free(ip_reg);
+}
+
+void ip_reg_tracefile(ip_reg_p ip_reg, const char *filename) {
+    ip_reg->tracer = trace_reader_create('P', filename);
+}
+
+val ip_read(ip_reg_p ip_reg) {
+    return ip_reg->data;
+}
+
+void ip_write(ip_reg_p ip_reg, val value, bool wr_enable) {
+    if (wr_enable) {
+        if (trace_match_next(ip_reg->tracer, from_int(0), value))
+            ip_reg->data = value;
+        else
+            error("Trace mismatch on write to instruction pointer");
+    }
+}