rv64,init: fix initial values of vlenb and vtype (#188)

* fix : vlenb ,vtype have initial value
OpenXiangShan · Sep 22, 2023 · cff8344 · cff8344
1 parent 17bca45
commit cff8344
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/isa/riscv64/init.c b/src/isa/riscv64/init.c
@@ -90,7 +90,8 @@ void init_isa() {
   // vector
   misa->extensions |= ext('v');
   vl->val = 0;
-  vtype->val = 0; // actually should be 1 << 63 (set vill bit to forbidd)
+  vtype->val = (uint64_t) 1 << 63; // actually should be 1 << 63 (set vill bit to forbidd)
+  vlenb->val = VLEN/8;
 #endif // CONFIG_RVV
 
 #ifdef CONFIG_RV_ARCH_CSRS
@@ -128,5 +129,7 @@ void init_isa() {
   Log("NEMU will start from pc 0x%lx", cpu.pc);
 #endif
 
+  csr_prepare();
+
   is_second_call = true;
 }