1 files changed, 135 insertions, 0 deletions
diff --git a/riscv/vector_unit.h b/riscv/vector_unit.h
new file mode 100644
index 0000000..b9f706c
--- /dev/null
+++ b/riscv/vector_unit.h
@@ -0,0 +1,135 @@
+// See LICENSE for license details.
+#ifndef _RISCV_VECTOR_UNIT_H
+#define _RISCV_VECTOR_UNIT_H
+
+#include "decode.h"
+#include "csrs.h"
+
+class processor_t;
+
+enum VRM{
+  RNU = 0,
+  RNE,
+  RDN,
+  ROD,
+  INVALID_RM
+};
+
+template<uint64_t N>
+struct type_usew_t;
+
+template<>
+struct type_usew_t<8>
+{
+  using type=uint8_t;
+};
+
+template<>
+struct type_usew_t<16>
+{
+  using type=uint16_t;
+};
+
+template<>
+struct type_usew_t<32>
+{
+  using type=uint32_t;
+};
+
+template<>
+struct type_usew_t<64>
+{
+  using type=uint64_t;
+};
+
+template<uint64_t N>
+struct type_sew_t;
+
+template<>
+struct type_sew_t<8>
+{
+  using type=int8_t;
+};
+
+template<>
+struct type_sew_t<16>
+{
+  using type=int16_t;
+};
+
+template<>
+struct type_sew_t<32>
+{
+  using type=int32_t;
+};
+
+template<>
+struct type_sew_t<64>
+{
+  using type=int64_t;
+};
+
+
+class vectorUnit_t
+{
+public:
+  processor_t* p;
+  void *reg_file;
+  char reg_referenced[NVPR];
+  int setvl_count;
+  reg_t vlmax;
+  reg_t vlenb;
+  csr_t_p vxsat;
+  vector_csr_t_p vxrm, vstart, vl, vtype;
+  reg_t vma, vta;
+  reg_t vsew;
+  float vflmul;
+  reg_t ELEN, VLEN;
+  bool vill;
+  bool vstart_alu;
+
+  // vector element for varies SEW
+  template<class T> T& elt(reg_t vReg, reg_t n, bool is_write = false);
+
+public:
+
+  void reset();
+
+  vectorUnit_t():
+    p(0),
+    reg_file(0),
+    reg_referenced{0},
+    setvl_count(0),
+    vlmax(0),
+    vlenb(0),
+    vxsat(0),
+    vxrm(0),
+    vstart(0),
+    vl(0),
+    vtype(0),
+    vma(0),
+    vta(0),
+    vsew(0),
+    vflmul(0),
+    ELEN(0),
+    VLEN(0),
+    vill(false),
+    vstart_alu(false) {
+  }
+
+  ~vectorUnit_t() {
+    free(reg_file);
+    reg_file = 0;
+  }
+
+  reg_t set_vl(int rd, int rs1, reg_t reqVL, reg_t newType);
+
+  reg_t get_vlen() { return VLEN; }
+  reg_t get_elen() { return ELEN; }
+  reg_t get_slen() { return VLEN; }
+
+  VRM get_vround_mode() {
+    return (VRM)(vxrm->read());
+  }
+};
+#endif