saveargs: let disasm do the lifting

*** 25,36 ****
   */
  
  #ifndef _LIBDISASM_H
  #define _LIBDISASM_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <sys/types.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
--- 25,34 ----
*** 65,74 ****
--- 63,73 ----
  extern uint64_t dis_previnstr(dis_handle_t *, uint64_t, int n);
  extern void dis_set_data(dis_handle_t *, void *);
  extern void dis_flags_set(dis_handle_t *, int f);
  extern void dis_flags_clear(dis_handle_t *, int f);
  extern int dis_max_instrlen(dis_handle_t *);
+ extern int dis_instrlen(dis_handle_t *, uint64_t);
  
  /* libdisasm errors */
  #define E_DIS_NOMEM             1       /* Out of memory */
  #define E_DIS_INVALFLAG         2       /* Invalid flag for this architecture */