blob: e70074e05f4ef095e33beb1cf28ede8ae817f980 [file] [log] [blame]
Bryan Wu1394f032007-05-06 14:50:22 -07001/*
2 * include/asm-blackfin/flat.h -- uClinux flat-format executables
3 *
4 * Copyright (C) 2003,
5 *
6 */
7
8#ifndef __BLACKFIN_FLAT_H__
9#define __BLACKFIN_FLAT_H__
10
11#include <asm/unaligned.h>
12
13#define flat_stack_align(sp) /* nothing needed */
14#define flat_argvp_envp_on_stack() 0
15#define flat_old_ram_flag(flags) (flags)
16
17extern unsigned long bfin_get_addr_from_rp (unsigned long *ptr,
18 unsigned long relval,
19 unsigned long flags,
20 unsigned long *persistent);
21
22extern void bfin_put_addr_at_rp(unsigned long *ptr, unsigned long addr,
23 unsigned long relval);
24
25/* The amount by which a relocation can exceed the program image limits
26 without being regarded as an error. */
27
28#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
29
30#define flat_get_addr_from_rp(rp, relval, flags, persistent) \
31 bfin_get_addr_from_rp(rp, relval, flags, persistent)
32#define flat_put_addr_at_rp(rp, val, relval) \
33 bfin_put_addr_at_rp(rp, val, relval)
34
35/* Convert a relocation entry into an address. */
36static inline unsigned long
37flat_get_relocate_addr (unsigned long relval)
38{
39 return relval & 0x03ffffff; /* Mask out top 6 bits */
40}
41
42static inline int flat_set_persistent(unsigned long relval,
43 unsigned long *persistent)
44{
45 int type = (relval >> 26) & 7;
46 if (type == 3) {
47 *persistent = relval << 16;
48 return 1;
49 }
50 return 0;
51}
52
53static inline int flat_addr_absolute(unsigned long relval)
54{
55 return (relval & (1 << 29)) != 0;
56}
57
58#endif /* __BLACKFIN_FLAT_H__ */