Listing 2

typedef unsigned char TenByteReal [10];

typedef struct {
   unsigned  j_sp;
   unsigned  j_ss;
   unsigned  j_flag;
   unsigned  j_cs;
   unsigned  j_ip;
   unsigned  j_bp;
   unsigned  j_di;
   unsigned  j_es;
   unsigned  j_si;
   unsigned  j_ds;
   TenByteReal st1, st2;
} jmp_buf[1];