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; 63