X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=riscv%2Fprocessor.cc;h=35adc10f9907eec29754127b3ca1abedb8c2bba3;hb=7e35a2a62f7433060e2ab1c98b3afd8b8a69b829;hp=ce040443977a61faecf7d243dcbedf685574f71c;hpb=9d1e10a36e771bf8cfbf515e07e856e021c1007a;p=riscv-isa-sim.git

diff --git a/riscv/processor.cc b/riscv/processor.cc
index ce04044..35adc10 100644
--- a/riscv/processor.cc
+++ b/riscv/processor.cc
@@ -64,10 +64,10 @@ void processor_t::parse_isa_string(const char* str)
   const char* all_subsets = "imafdqc";
 
   max_xlen = 64;
-  isa = reg_t(2) << 62;
+  state.misa = reg_t(2) << 62;
 
   if (strncmp(p, "rv32", 4) == 0)
-    max_xlen = 32, isa = reg_t(1) << 30, p += 4;
+    max_xlen = 32, state.misa = reg_t(1) << 30, p += 4;
   else if (strncmp(p, "rv64", 4) == 0)
     p += 4;
   else if (strncmp(p, "rv", 2) == 0)
@@ -83,11 +83,11 @@ void processor_t::parse_isa_string(const char* str)
   }
 
   isa_string = "rv" + std::to_string(max_xlen) + p;
-  isa |= 1L << ('s' - 'a'); // advertise support for supervisor mode
-  isa |= 1L << ('u' - 'a'); // advertise support for user mode
+  state.misa |= 1L << ('s' - 'a'); // advertise support for supervisor mode
+  state.misa |= 1L << ('u' - 'a'); // advertise support for user mode
 
   while (*p) {
-    isa |= 1L << (*p - 'a');
+    state.misa |= 1L << (*p - 'a');
 
     if (auto next = strchr(all_subsets, *p)) {
       all_subsets = next + 1;
@@ -112,12 +112,13 @@ void processor_t::parse_isa_string(const char* str)
   if (supports_extension('Q') && max_xlen < 64)
     bad_isa_string(str);
 
-  max_isa = isa;
+  max_isa = state.misa;
 }
 
-void state_t::reset()
+void state_t::reset(reg_t max_isa)
 {
   memset(this, 0, sizeof(*this));
+  misa = max_isa;
   prv = PRV_M;
   pc = DEFAULT_RSTVEC;
   load_reservation = -1;
@@ -146,7 +147,7 @@ void processor_t::set_histogram(bool value)
 
 void processor_t::reset()
 {
-  state.reset();
+  state.reset(max_isa);
   state.dcsr.halt = halt_on_reset;
   halt_on_reset = false;
   set_csr(CSR_MSTATUS, state.mstatus);
@@ -458,7 +459,7 @@ void processor_t::set_csr(int which, reg_t val)
       mask |= 1L << ('C' - 'A');
       mask &= max_isa;
 
-      isa = (val & mask) | (isa & ~mask);
+      state.misa = (val & mask) | (state.misa & ~mask);
       break;
     }
     case CSR_TSELECT:
@@ -607,7 +608,7 @@ reg_t processor_t::get_csr(int which)
     case CSR_MSCRATCH: return state.mscratch;
     case CSR_MCAUSE: return state.mcause;
     case CSR_MTVAL: return state.mtval;
-    case CSR_MISA: return isa;
+    case CSR_MISA: return state.misa;
     case CSR_MARCHID: return 0;
     case CSR_MIMPID: return 0;
     case CSR_MVENDORID: return 0;