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Commit | Line | Data |
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d2a5f499 YS |
1 | /* |
2 | * arch/h8300/asm/include/flat.h -- uClinux flat-format executables | |
3 | */ | |
4 | ||
5 | #ifndef __H8300_FLAT_H__ | |
6 | #define __H8300_FLAT_H__ | |
7 | ||
468138d7 AV |
8 | #include <asm/unaligned.h> |
9 | ||
d2a5f499 YS |
10 | #define flat_argvp_envp_on_stack() 1 |
11 | #define flat_old_ram_flag(flags) 1 | |
12 | #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) | |
13 | #define flat_set_persistent(relval, p) 0 | |
14 | ||
15 | /* | |
16 | * on the H8 a couple of the relocations have an instruction in the | |
17 | * top byte. As there can only be 24bits of address space, we just | |
18 | * always preserve that 8bits at the top, when it isn't an instruction | |
19 | * is is 0 (davidm@snapgear.com) | |
20 | */ | |
21 | ||
22 | #define flat_get_relocate_addr(rel) (rel & ~0x00000001) | |
468138d7 AV |
23 | static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, |
24 | u32 *addr, u32 *persistent) | |
25 | { | |
26 | u32 val = get_unaligned((__force u32 *)rp); | |
87b2c3fc | 27 | if (!(flags & FLAT_FLAG_GOTPIC)) |
468138d7 AV |
28 | val &= 0x00ffffff; |
29 | *addr = val; | |
30 | return 0; | |
31 | } | |
32 | ||
33 | static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) | |
34 | { | |
35 | u32 *p = (__force u32 *)rp; | |
36 | put_unaligned((addr & 0x00ffffff) | (*(char *)p << 24), p); | |
37 | return 0; | |
38 | } | |
d2a5f499 YS |
39 | |
40 | #endif /* __H8300_FLAT_H__ */ |