arch/mips/boot/ecoff.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Some ECOFF definitions.
   4  */
   5 typedef struct filehdr {
   6         unsigned short  f_magic;        /* magic number */
   7         unsigned short  f_nscns;        /* number of sections */
   8         long            f_timdat;       /* time & date stamp */
   9         long            f_symptr;       /* file pointer to symbolic header */
  10         long            f_nsyms;        /* sizeof(symbolic hdr) */
  11         unsigned short  f_opthdr;       /* sizeof(optional hdr) */
  12         unsigned short  f_flags;        /* flags */
  13 } FILHDR;
  14 #define FILHSZ  sizeof(FILHDR)
  15
  16 #define MIPSEBMAGIC     0x160
  17 #define MIPSELMAGIC     0x162
  18
  19 typedef struct scnhdr {
  20         char            s_name[8];      /* section name */
  21         long            s_paddr;        /* physical address, aliased s_nlib */
  22         long            s_vaddr;        /* virtual address */
  23         long            s_size;         /* section size */
  24         long            s_scnptr;       /* file ptr to raw data for section */
  25         long            s_relptr;       /* file ptr to relocation */
  26         long            s_lnnoptr;      /* file ptr to gp histogram */
  27         unsigned short  s_nreloc;       /* number of relocation entries */
  28         unsigned short  s_nlnno;        /* number of gp histogram entries */
  29         long            s_flags;        /* flags */
  30 } SCNHDR;
  31 #define SCNHSZ          sizeof(SCNHDR)
  32 #define SCNROUND        ((long)16)
  33
  34 typedef struct aouthdr {
  35         short   magic;          /* see above                            */
  36         short   vstamp;         /* version stamp                        */
  37         long    tsize;          /* text size in bytes, padded to DW bdry*/
  38         long    dsize;          /* initialized data "  "                */
  39         long    bsize;          /* uninitialized data "   "             */
  40         long    entry;          /* entry pt.                            */
  41         long    text_start;     /* base of text used for this file      */
  42         long    data_start;     /* base of data used for this file      */
  43         long    bss_start;      /* base of bss used for this file       */
  44         long    gprmask;        /* general purpose register mask        */
  45         long    cprmask[4];     /* co-processor register masks          */
  46         long    gp_value;       /* the gp value used for this object    */
  47 } AOUTHDR;
  48 #define AOUTHSZ sizeof(AOUTHDR)
  49
  50 #define OMAGIC          0407
  51 #define NMAGIC          0410
  52 #define ZMAGIC          0413
  53 #define SMAGIC          0411
  54 #define LIBMAGIC        0443
  55
  56 #define N_TXTOFF(f, a) \
  57  ((a).magic == ZMAGIC || (a).magic == LIBMAGIC ? 0 : \
  58   ((a).vstamp < 23 ? \
  59    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + 7) & 0xfffffff8) : \
  60    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + SCNROUND-1) & ~(SCNROUND-1)) ) )
  61 #define N_DATOFF(f, a) \
  62   N_TXTOFF(f, a) + (a).tsize;