src/hotspot/cpu/aarch64/assembler_aarch64.hpp

*** 983,998 ****
      f(op2, 7, 5);
      rf(rt, 0);
    }
  
    void hint(int imm) {
!     system(0b00, 0b011, 0b0010, imm, 0b000);
    }
  
    void nop() {
      hint(0);
    }
    // we only provide mrs and msr for the special purpose system
    // registers where op1 (instr[20:19]) == 11 and, (currently) only
    // use it for FPSR n.b msr has L (instr[21]) == 0 mrs has L == 1
  
    void msr(int op1, int CRn, int CRm, int op2, Register rt) {
--- 983,1019 ----
      f(op2, 7, 5);
      rf(rt, 0);
    }
  
    void hint(int imm) {
!     system(0b00, 0b011, 0b0010, 0b0000, imm);
    }
  
    void nop() {
      hint(0);
    }
+ 
+   void yield() {
+     hint(1);
+   }
+ 
+   void wfe() {
+     hint(2);
+   }
+ 
+   void wfi() {
+     hint(3);
+   }
+ 
+   void sev() {
+     hint(4);
+   }
+ 
+   void sevl() {
+     hint(5);
+   }
+ 
    // we only provide mrs and msr for the special purpose system
    // registers where op1 (instr[20:19]) == 11 and, (currently) only
    // use it for FPSR n.b msr has L (instr[21]) == 0 mrs has L == 1
  
    void msr(int op1, int CRn, int CRm, int op2, Register rt) {