Move instruction length checking

Author: qwe661234

src/emulate.c

@@ -551,9 +551,11 @@ static bool emulate(riscv_t *rv, rv_insn_t *ir)
         rv->X[ir->rd] = rv->X[ir->rs1] & rv->X[ir->rs2];
         break;
     case rv_insn_ecall: /* ECALL: Environment Call */
+        rv->compressed = false;
         rv->io.on_ecall(rv);
         return true;
     case rv_insn_ebreak: /* EBREAK: Environment Break */
+        rv->compressed = false;
         rv->io.on_ebreak(rv);
         return true;
     case rv_insn_wfi:  /* WFI: Wait for Interrupt */
@@ -1103,6 +1105,7 @@ static bool emulate(riscv_t *rv, rv_insn_t *ir)
         rv->X[ir->rd] = rv->X[ir->rs2];
         break;
     case rv_insn_cebreak: /* C.EBREAK */
+        rv->compressed = true;
         rv->io.on_ebreak(rv);
         /* can branch */
         return true;
@@ -1354,14 +1357,12 @@ void rv_step(riscv_t *rv, int32_t cycles)
 void ebreak_handler(riscv_t *rv)
 {
     assert(rv);
-    rv->compressed = false;
     rv_except_breakpoint(rv, rv->PC);
 }
 
 void ecall_handler(riscv_t *rv)
 {
     assert(rv);
-    rv->compressed = false;
     rv_except_ecall_M(rv, 0);
     syscall_handler(rv);
 }