[SCSI] bnx2i: Fixed the endian on TTT for NOP out transmission
[linux-2.6.git] / arch / openrisc / kernel / module.c
1 /*
2  * OpenRISC module.c
3  *
4  * Linux architectural port borrowing liberally from similar works of
5  * others.  All original copyrights apply as per the original source
6  * declaration.
7  *
8  * Modifications for the OpenRISC architecture:
9  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
10  *
11  *      This program is free software; you can redistribute it and/or
12  *      modify it under the terms of the GNU General Public License
13  *      as published by the Free Software Foundation; either version
14  *      2 of the License, or (at your option) any later version.
15  */
16
17 #include <linux/moduleloader.h>
18 #include <linux/elf.h>
19
20 int apply_relocate_add(Elf32_Shdr *sechdrs,
21                        const char *strtab,
22                        unsigned int symindex,
23                        unsigned int relsec,
24                        struct module *me)
25 {
26         unsigned int i;
27         Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
28         Elf32_Sym *sym;
29         uint32_t *location;
30         uint32_t value;
31
32         pr_debug("Applying relocate section %u to %u\n", relsec,
33                  sechdrs[relsec].sh_info);
34         for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
35                 /* This is where to make the change */
36                 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
37                         + rel[i].r_offset;
38
39                 /* This is the symbol it is referring to.  Note that all
40                    undefined symbols have been resolved.  */
41                 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
42                         + ELF32_R_SYM(rel[i].r_info);
43                 value = sym->st_value + rel[i].r_addend;
44
45                 switch (ELF32_R_TYPE(rel[i].r_info)) {
46                 case R_OR32_32:
47                         *location = value;
48                         break;
49                 case R_OR32_CONST:
50                         location = (uint16_t *)location + 1;
51                         *((uint16_t *)location) = (uint16_t) (value);
52                         break;
53                 case R_OR32_CONSTH:
54                         location = (uint16_t *)location + 1;
55                         *((uint16_t *)location) = (uint16_t) (value >> 16);
56                         break;
57                 case R_OR32_JUMPTARG:
58                         value -= (uint32_t)location;
59                         value >>= 2;
60                         value &= 0x03ffffff;
61                         value |= *location & 0xfc000000;
62                         *location = value;
63                         break;
64                 default:
65                         pr_err("module %s: Unknown relocation: %u\n",
66                                me->name, ELF32_R_TYPE(rel[i].r_info));
67                         break;
68                 }
69         }
70
71         return 0;
72 }