From f95a85de0082010e4af83e26e99299d601bb48d6 Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Mon, 13 May 2024 00:04:44 +0200
Subject: Some work on CSR

---
 emulator/hart.h | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

(limited to 'emulator/hart.h')

diff --git a/emulator/hart.h b/emulator/hart.h
index 8e04d19..7135ed7 100644
--- a/emulator/hart.h
+++ b/emulator/hart.h
@@ -1,19 +1,38 @@
 #pragma once
 
+#include "emulator/csr.h"
+
 #include <stdint.h>
 #include <stdbool.h>
 
+#define PRIV_U 0
+#define PRIV_S 1
+#define PRIV_M 3
+
 struct Hart
 {
-    uint32_t pc;
+    uint32_t hartid;
+    
     uint32_t regs[32];
+
+    uint32_t pc;
+    uint8_t  priv;
     
+    // @Todo Proper memory system
     char*    mem;
     uint32_t mem_size;
-    
-    bool     halted;
+
+    // @Todo Deduplicate per machine
+    Csr      csrs[4096];
+
+    uint64_t instret;
+
+    // @Todo Deduplicate per machine
+    uint64_t time;
 };
 typedef struct Hart Hart;
 
+void hart_init(Hart* hart, uint32_t id, char* mem, uint32_t mem_size);
+
 void execute(Hart* hart, uint32_t instruction);
 void execute_from(Hart* hart, uint32_t start_address);
-- 
cgit