#include st-out.h>
struct aexec short a_magic;magic number (0x601a) unsigned long a_text;text segment size unsigned long a_data;initialized data size unsigned long a_bss;uninitialized data size unsigned long a_syms;symbol table size unsigned long a_AZero1;always zero unsigned long a_ldflgs;program load flags unsigned short a_isreloc;is reloc info present
struct asym char a_name[8];symbol name unsigned short a_type;type flag unsigned long a_value;symbol value