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;