arch/mips/boot/ecoff.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Some ECOFF definitions.
   4  */
   5
   6 #include <stdint.h>
   7
   8 typedef struct filehdr {
   9         uint16_t        f_magic;        /* magic number */
  10         uint16_t        f_nscns;        /* number of sections */
  11         int32_t         f_timdat;       /* time & date stamp */
  12         int32_t         f_symptr;       /* file pointer to symbolic header */
  13         int32_t         f_nsyms;        /* sizeof(symbolic hdr) */
  14         uint16_t        f_opthdr;       /* sizeof(optional hdr) */
  15         uint16_t        f_flags;        /* flags */
  16 } FILHDR;
  17 #define FILHSZ  sizeof(FILHDR)
  18
  19 #define MIPSEBMAGIC     0x160
  20 #define MIPSELMAGIC     0x162
  21
  22 typedef struct scnhdr {
  23         char            s_name[8];      /* section name */
  24         int32_t         s_paddr;        /* physical address, aliased s_nlib */
  25         int32_t         s_vaddr;        /* virtual address */
  26         int32_t         s_size;         /* section size */
  27         int32_t         s_scnptr;       /* file ptr to raw data for section */
  28         int32_t         s_relptr;       /* file ptr to relocation */
  29         int32_t         s_lnnoptr;      /* file ptr to gp histogram */
  30         uint16_t        s_nreloc;       /* number of relocation entries */
  31         uint16_t        s_nlnno;        /* number of gp histogram entries */
  32         int32_t         s_flags;        /* flags */
  33 } SCNHDR;
  34 #define SCNHSZ          sizeof(SCNHDR)
  35 #define SCNROUND        ((int32_t)16)
  36
  37 typedef struct aouthdr {
  38         int16_t magic;          /* see above                            */
  39         int16_t vstamp;         /* version stamp                        */
  40         int32_t tsize;          /* text size in bytes, padded to DW bdry*/
  41         int32_t dsize;          /* initialized data "  "                */
  42         int32_t bsize;          /* uninitialized data "   "             */
  43         int32_t entry;          /* entry pt.                            */
  44         int32_t text_start;     /* base of text used for this file      */
  45         int32_t data_start;     /* base of data used for this file      */
  46         int32_t bss_start;      /* base of bss used for this file       */
  47         int32_t gprmask;        /* general purpose register mask        */
  48         int32_t cprmask[4];     /* co-processor register masks          */
  49         int32_t gp_value;       /* the gp value used for this object    */
  50 } AOUTHDR;
  51 #define AOUTHSZ sizeof(AOUTHDR)
  52
  53 #define OMAGIC          0407
  54 #define NMAGIC          0410
  55 #define ZMAGIC          0413
  56 #define SMAGIC          0411
  57 #define LIBMAGIC        0443
  58
  59 #define N_TXTOFF(f, a) \
  60  ((a).magic == ZMAGIC || (a).magic == LIBMAGIC ? 0 : \
  61   ((a).vstamp < 23 ? \
  62    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + 7) & 0xfffffff8) : \
  63    ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + SCNROUND-1) & ~(SCNROUND-1)) ) )
  64 #define N_DATOFF(f, a) \
  65   N_TXTOFF(f, a) + (a).tsize;