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; 66