1 /*
2 * uClinux flat-format executables
3 *
4 * Copyright 2003-2009 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2
7 */
8
9 #ifndef __BLACKFIN_FLAT_H__
10 #define __BLACKFIN_FLAT_H__
11
12 #include <asm/unaligned.h>
13
14 #define flat_argvp_envp_on_stack() 0
15 #define flat_old_ram_flag(flags) (flags)
16
17 extern unsigned long bfin_get_addr_from_rp (unsigned long *ptr,
18 unsigned long relval,
19 unsigned long flags,
20 unsigned long *persistent);
21
22 extern 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. */
36 static inline unsigned long
flat_get_relocate_addr(unsigned long relval)37 flat_get_relocate_addr (unsigned long relval)
38 {
39 return relval & 0x03ffffff; /* Mask out top 6 bits */
40 }
41
flat_set_persistent(unsigned long relval,unsigned long * persistent)42 static 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
flat_addr_absolute(unsigned long relval)53 static inline int flat_addr_absolute(unsigned long relval)
54 {
55 return (relval & (1 << 29)) != 0;
56 }
57
58 #endif /* __BLACKFIN_FLAT_H__ */
59