aout.h

完整的Bell实验室的嵌入式文件系统TFS

/*  aout.h:
 *  Header file for the AOUT file format used by TFS.
 *
 *  General notice:
 *  This code is part of a boot-monitor package developed as a generic base
 *  platform for embedded system designs.  As such, it is likely to be
 *  distributed to various projects beyond the control of the original
 *  author.  Please notify the author of any enhancements made or bugs found
 *  so that all may benefit from the changes.  In addition, notification back
 *  to the author will allow the new user to pick up changes that may have
 *  been made by other users after this version of the code was distributed.
 *
 *  Note1: the majority of this code was edited with 4-space tabs.
 *  Note2: as more and more contributions are accepted, the term "author"
 *         is becoming a mis-representation of credit.
 *
 *  Original author:    Ed Sutter
 *  Email:              [e-mail]
 *  Phone:              908-582-2351
 */
struct exec {
    unsigned short  a_mid;
    unsigned short  a_magic;
    unsigned long   a_text;     /* Size of text segment in bytes */
    unsigned long   a_data;     /* Size of data segment in bytes */
    unsigned long   a_bss;      /* Size of bss segment in bytes */
    unsigned long   a_syms;     /* Size of symbol table in bytes */
    unsigned long   a_entry;    /* Entry point address */
    unsigned long   a_trsize;   /* Size of text relocation table */
    unsigned long   a_drsize;   /* Size of data relocation table */
};

struct relocation_info {
    int     r_address;
    ulong       r_info;
};

/* Fields within r_info: */
#define SYMNUM_MSK  0xffffff00
#define PCREL_MSK   0x00000080
#define LENGTH_MSK  0x00000060
#define EXTERN_MSK  0x00000010