arch/mips/boot/ecoff.h

   1 /*
   2  * Some ECOFF definitions.
   3  */
   4 typedef struct filehdr {
   5         unsigned short  f_magic;        /* magic number */
   6         unsigned short  f_nscns;        /* number of sections */
   7         long            f_timdat;       /* time & date stamp */
   8         long            f_symptr;       /* file pointer to symbolic header */
   9         long            f_nsyms;        /* sizeof(symbolic hdr) */
  10         unsigned short  f_opthdr;       /* sizeof(optional hdr) */
  11         unsigned short  f_flags;        /* flags */
  12 } FILHDR;
  13 #define FILHSZ  sizeof(FILHDR)
  14
  15 #define MIPSEBMAGIC     0x160
  16 #define MIPSELMAGIC     0x162
  17
  18 typedef struct scnhdr {
  19         char            s_name[8];      /* section name */
  20         long            s_paddr;        /* physical address, aliased s_nlib */
  21         long            s_vaddr;        /* virtual address */
  22         long            s_size;         /* section size */
  23         long            s_scnptr;       /* file ptr to raw data for section */
  24         long            s_relptr;       /* file ptr to relocation */
  25         long            s_lnnoptr;      /* file ptr to gp histogram */
  26         unsigned short  s_nreloc;       /* number of relocation entries */
  27         unsigned short  s_nlnno;        /* number of gp histogram entries */
  28         long            s_flags;        /* flags */
  29 } SCNHDR;
  30 #define SCNHSZ          sizeof(SCNHDR)
  31 #define SCNROUND        ((long)16)
  32
  33 typedef struct aouthdr {
  34         short   magic;          /* see above                            */
  35         short   vstamp;         /* version stamp                        */
  36         long    tsize;          /* text size in bytes, padded to DW bdry*/
  37         long    dsize;          /* initialized data "  "                */
  38         long    bsize;          /* uninitialized data "   "             */
  39         long    entry;          /* entry pt.                            */
  40         long    text_start;     /* base of text used for this file      */
  41         long    data_start;     /* base of data used for this file      */
  42         long    bss_start;      /* base of bss used for this file       */
  43         long    gprmask;        /* general purpose register mask        */
  44         long    cprmask[4];     /* co-processor register masks          */
  45         long    gp_value;       /* the gp value used for this object    */
  46 } AOUTHDR;
  47 #define AOUTHSZ sizeof(AOUTHDR)
  48
  49 #define OMAGIC          0407
  50 #define NMAGIC          0410
  51 #define ZMAGIC          0413
  52 #define SMAGIC          0411
  53 #define LIBMAGIC        0443
  54
  55 #define N_TXTOFF(f, a) \
  56  ((a).magic == ZMAGIC || (a).magic == LIBMAGIC ? 0 : \
  57   ((a).vstamp < 23 ? \
  58    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + 7) & 0xfffffff8) : \
  59    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + SCNROUND-1) & ~(SCNROUND-1)) ) )
  60 #define N_DATOFF(f, a) \
  61   N_TXTOFF(f, a) + (a).tsize;