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