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Author: aswaterman

riscv/execute.cc

@@ -306,8 +306,8 @@ void processor_t::step(size_t n)
           prev_ic_entry = ic_entry;
           auto fetch = ic_entry->data;
           pc = execute_insn_fast(this, pc, fetch);
-          ic_entry = &_mmu->icache[_mmu->icache_index(pc)];
-          //ic_entry = ic_entry->next;
+          //ic_entry = &_mmu->icache[_mmu->icache_index(pc)];
+          ic_entry = ic_entry->next;
           if (unlikely(ic_entry->tag != pc))
             break;
           if (unlikely(instret + 1 == n))

riscv/mmu.h

@@ -42,7 +42,7 @@ struct insn_fetch_t
 
 struct icache_entry_t {
   reg_t tag;
-  //struct icache_entry_t* next;
+  struct icache_entry_t* next;
   insn_fetch_t data;
 };
 
@@ -323,7 +323,7 @@ class mmu_t
 
     insn_fetch_t fetch = {proc->decode_insn(insn), insn};
     entry->tag = addr;
-    //entry->next = &icache[icache_index(addr + length)];
+    entry->next = &icache[icache_index(addr + length)];
     entry->data = fetch;
 
     auto [check_tracer, _, paddr] = access_tlb(tlb_insn, addr, TLB_FLAGS, TLB_CHECK_TRACER);