| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Some ECOFF definitions. |
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| 4 | */ |
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| 5 | |
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| 6 | #include <stdint.h> |
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| 7 | |
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| 8 | typedef struct filehdr { |
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| 9 | uint16_t f_magic; /* magic number */ |
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| 10 | uint16_t f_nscns; /* number of sections */ |
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| 11 | int32_t f_timdat; /* time & date stamp */ |
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| 12 | int32_t f_symptr; /* file pointer to symbolic header */ |
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| 13 | int32_t f_nsyms; /* sizeof(symbolic hdr) */ |
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| 14 | uint16_t f_opthdr; /* sizeof(optional hdr) */ |
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| 15 | uint16_t f_flags; /* flags */ |
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| 16 | } FILHDR; |
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| 17 | #define FILHSZ sizeof(FILHDR) |
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| 18 | |
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| 19 | #define MIPSEBMAGIC 0x160 |
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| 20 | #define MIPSELMAGIC 0x162 |
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| 21 | |
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| 22 | typedef struct scnhdr { |
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| 23 | char s_name[8]; /* section name */ |
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| 24 | int32_t s_paddr; /* physical address, aliased s_nlib */ |
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| 25 | int32_t s_vaddr; /* virtual address */ |
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| 26 | int32_t s_size; /* section size */ |
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| 27 | int32_t s_scnptr; /* file ptr to raw data for section */ |
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| 28 | int32_t s_relptr; /* file ptr to relocation */ |
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| 29 | int32_t s_lnnoptr; /* file ptr to gp histogram */ |
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| 30 | uint16_t s_nreloc; /* number of relocation entries */ |
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| 31 | uint16_t s_nlnno; /* number of gp histogram entries */ |
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| 32 | int32_t s_flags; /* flags */ |
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| 33 | } SCNHDR; |
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| 34 | #define SCNHSZ sizeof(SCNHDR) |
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| 35 | #define SCNROUND ((int32_t)16) |
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| 36 | |
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| 37 | typedef struct aouthdr { |
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| 38 | int16_t magic; /* see above */ |
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| 39 | int16_t vstamp; /* version stamp */ |
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| 40 | int32_t tsize; /* text size in bytes, padded to DW bdry*/ |
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| 41 | int32_t dsize; /* initialized data " " */ |
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| 42 | int32_t bsize; /* uninitialized data " " */ |
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| 43 | int32_t entry; /* entry pt. */ |
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| 44 | int32_t text_start; /* base of text used for this file */ |
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| 45 | int32_t data_start; /* base of data used for this file */ |
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| 46 | int32_t bss_start; /* base of bss used for this file */ |
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| 47 | int32_t gprmask; /* general purpose register mask */ |
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| 48 | int32_t cprmask[4]; /* co-processor register masks */ |
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| 49 | int32_t gp_value; /* the gp value used for this object */ |
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| 50 | } AOUTHDR; |
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| 51 | #define AOUTHSZ sizeof(AOUTHDR) |
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| 52 | |
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| 53 | #define OMAGIC 0407 |
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| 54 | #define NMAGIC 0410 |
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| 55 | #define ZMAGIC 0413 |
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| 56 | #define SMAGIC 0411 |
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| 57 | #define LIBMAGIC 0443 |
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| 58 | |
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| 59 | #define N_TXTOFF(f, a) \ |
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| 60 | ((a).magic == ZMAGIC || (a).magic == LIBMAGIC ? 0 : \ |
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| 61 | ((a).vstamp < 23 ? \ |
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| 62 | ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + 7) & 0xfffffff8) : \ |
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| 63 | ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + SCNROUND-1) & ~(SCNROUND-1)) ) ) |
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| 64 | #define N_DATOFF(f, a) \ |
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| 65 | N_TXTOFF(f, a) + (a).tsize; |
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| 66 | |
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