From 68bdebd8cae39c30acc384664faa136aeaa9bb84 Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Sat, 5 Nov 2022 16:59:17 -0700
Subject: Add initial uarch model

---
 isa/checker.cpp | 97 ++++++++++++++++++++++++++++-----------------------------
 1 file changed, 48 insertions(+), 49 deletions(-)

(limited to 'isa/checker.cpp')

diff --git a/isa/checker.cpp b/isa/checker.cpp
index c6ab161..70b0f88 100644
--- a/isa/checker.cpp
+++ b/isa/checker.cpp
@@ -3,56 +3,55 @@
 #include "isa/checker.h"
 #include "isa/isa.h"
 
-void checker::execute() {
-    bool interrupt = system.interact(ctlregs);
-
-    if (ctlregs[HALTED])
-        return;
-
-    inst = decode(ctlregs[FLAGS],
-                  pc,
-                  mem.fetch(pc),
-                  interrupt);
-    auto next_pc = inst.next_pc;
-
-    if (inst.need_indirect_load) {
-        auto addr = mem.fetch(inst.init_address.value());
-        if (inst.need_autoinc_store) {
-            addr = (addr + 1) & 07777;
-            mem.store(*inst.init_address, addr);
+void funcchecker::execute() {
+    if (!ctlregs[HALTED]) {
+        inst = decode(ctlregs[FLAGS],
+                      pc,
+                      mem.fetch(pc),
+                      interrupt);
+        auto next_pc = inst.next_pc;
+
+        if (inst.need_indirect_load) {
+            auto addr = mem.fetch(inst.init_address.value());
+            if (inst.need_autoinc_store) {
+                addr = (addr + 1) & 07777;
+                mem.store(*inst.init_address, addr);
+            }
+            auto df = (ctlregs[FLAGS] & FLAG_DF) >> FLAG_DF_SHIFT;
+            inst.final_address = (df << 12) | addr;
+        } else {
+            assert(!inst.need_autoinc_store);
         }
-        auto df = (ctlregs[FLAGS] & FLAG_DF) >> FLAG_DF_SHIFT;
-        inst.final_address = (df << 12) | addr;
-    } else {
-        assert(!inst.need_autoinc_store);
+
+        if (inst.need_exec_load)
+            inst.data = mem.fetch(inst.final_address.value());
+
+        if (inst.need_read_acc)
+            inst.acc = acc;
+        if (inst.need_read_link)
+            inst.link = link;
+        if (inst.need_read_mq)
+            inst.mq = mq;
+        if (inst.read_ctlreg.has_value())
+            inst.ctlval = ctlregs[*inst.read_ctlreg];
+
+        inst.execute();
+
+        if (inst.need_write_acc)
+            acc = inst.acc.value();
+        if (inst.need_write_link)
+            link = inst.link.value();
+        if (inst.need_write_mq)
+            mq = inst.mq.value();
+        if (inst.write_ctlreg.has_value())
+            ctlregs[*inst.write_ctlreg] = inst.ctlval.value();
+
+        if (inst.need_exec_store)
+            mem.store(inst.final_address.value(), inst.data.value());
+
+        assert(inst.next_pc == next_pc || inst.possibly_redirects);
+        pc = inst.next_pc;
     }
 
-    if (inst.need_exec_load)
-        inst.data = mem.fetch(inst.final_address.value());
-
-    if (inst.need_read_acc)
-        inst.acc = acc;
-    if (inst.need_read_link)
-        inst.link = link;
-    if (inst.need_read_mq)
-        inst.mq = mq;
-    if (inst.read_ctlreg.has_value())
-        inst.ctlval = ctlregs[*inst.read_ctlreg];
-
-    inst.execute();
-
-    if (inst.need_write_acc)
-        acc = inst.acc.value();
-    if (inst.need_write_link)
-        link = inst.link.value();
-    if (inst.need_write_mq)
-        mq = inst.mq.value();
-    if (inst.write_ctlreg.has_value())
-        ctlregs[*inst.write_ctlreg] = inst.ctlval.value();
-
-    if (inst.need_exec_store)
-        mem.store(inst.final_address.value(), inst.data.value());
-
-    assert(inst.next_pc == next_pc || inst.possibly_redirects);
-    pc = inst.next_pc;
+    interrupt = system.interact(icount++, ctlregs, true);
 }
-- 
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