pointer masking: Let HLVX.* instructions not subject to pointer masking

Author: YenHaoChen

riscv/mmu.cc

@@ -613,8 +613,8 @@ void mmu_t::register_memtracer(memtracer_t* t)
   tracer.hook(t);
 }
 
-reg_t mmu_t::get_pmlen(bool effective_virt, reg_t effective_priv) const {
-  if (!proc || proc->get_xlen() != 64 || (in_mprv() && (proc->state.sstatus->read() & MSTATUS_MXR)))
+reg_t mmu_t::get_pmlen(bool effective_virt, reg_t effective_priv, xlate_flags_t flags) const {
+  if (!proc || proc->get_xlen() != 64 || (in_mprv() && (proc->state.sstatus->read() & MSTATUS_MXR)) || flags.hlvx)
     return 0;
 
   reg_t pmm = 0;
@@ -644,7 +644,7 @@ mem_access_info_t mmu_t::generate_access_info(reg_t addr, access_type type, xlat
       mode = get_field(proc->state.hstatus->read(), HSTATUS_SPVP);
     }
   }
-  reg_t pmlen = get_pmlen(virt, mode);
+  reg_t pmlen = get_pmlen(virt, mode, xlate_flags);
   reg_t satp = proc->state.satp->readvirt(virt);
   bool is_physical_addr = mode == PRV_M || get_field(satp, SATP64_MODE) == SATP_MODE_OFF;
   reg_t transformed_addr = is_physical_addr ? zext(addr, 64 - pmlen) : sext(addr, 64 - pmlen);

riscv/mmu.h

@@ -72,7 +72,7 @@ class mmu_t
   std::map<reg_t, reg_t> alloc_cache;
   std::vector<std::pair<reg_t, reg_t >> addr_tbl;
 
-  reg_t get_pmlen(bool effective_virt, reg_t effective_priv) const;
+  reg_t get_pmlen(bool effective_virt, reg_t effective_priv, xlate_flags_t flags) const;
   mem_access_info_t generate_access_info(reg_t addr, access_type type, xlate_flags_t xlate_flags);
 
 public: