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 (u32 *ptr, u32 relval,
18 u32 flags, u32 *persistent);
19
20 extern void bfin_put_addr_at_rp(u32 *ptr, u32 addr, u32 relval);
21
22 /* The amount by which a relocation can exceed the program image limits
23 without being regarded as an error. */
24
25 #define flat_reloc_valid(reloc, size) ((reloc) <= (size))
26
flat_get_addr_from_rp(u32 __user * rp,u32 relval,u32 flags,u32 * addr,u32 * persistent)27 static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
28 u32 *addr, u32 *persistent)
29 {
30 *addr = bfin_get_addr_from_rp(rp, relval, flags, persistent);
31 return 0;
32 }
33
flat_put_addr_at_rp(u32 __user * rp,u32 val,u32 relval)34 static inline int flat_put_addr_at_rp(u32 __user *rp, u32 val, u32 relval)
35 {
36 bfin_put_addr_at_rp(rp, val, relval);
37 return 0;
38 }
39
40 /* Convert a relocation entry into an address. */
41 static inline unsigned long
flat_get_relocate_addr(unsigned long relval)42 flat_get_relocate_addr (unsigned long relval)
43 {
44 return relval & 0x03ffffff; /* Mask out top 6 bits */
45 }
46
flat_set_persistent(u32 relval,u32 * persistent)47 static inline int flat_set_persistent(u32 relval, u32 *persistent)
48 {
49 int type = (relval >> 26) & 7;
50 if (type == 3) {
51 *persistent = relval << 16;
52 return 1;
53 }
54 return 0;
55 }
56
flat_addr_absolute(unsigned long relval)57 static inline int flat_addr_absolute(unsigned long relval)
58 {
59 return (relval & (1 << 29)) != 0;
60 }
61
62 #endif /* __BLACKFIN_FLAT_H__ */
63