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authorPaul Mundt <lethal@linux-sh.org>2007-11-20 01:16:25 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:49 -0500
commit1cb80fcfe2beafc55610ebd1cd4a03331d65f8ba (patch)
tree1562d21f0d948d9a45313c4e6d166af3cc6f0b81 /arch/sh64
parentba2727b556778f8af7cf08956d84723930a83965 (diff)
sh: Merge sh and sh64 module.c.
This is trivial, in that they're both effectively the same for the base relocations anyways. SH-5 doesn't need the unaligned bits, and has a few extra relocations, which are never hit on non-SH5 parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh64')
-rw-r--r--arch/sh64/kernel/module.c161
1 files changed, 0 insertions, 161 deletions
diff --git a/arch/sh64/kernel/module.c b/arch/sh64/kernel/module.c
deleted file mode 100644
index 2598f6b88b44..000000000000
--- a/arch/sh64/kernel/module.c
+++ /dev/null
@@ -1,161 +0,0 @@
1/* Kernel module help for sh64.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2 of the License, or
6 (at your option) any later version.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16
17 Copyright 2004 SuperH (UK) Ltd
18 Author: Richard Curnow
19
20 Based on the sh version, and on code from the sh64-specific parts of
21 modutils, originally written by Richard Curnow and Ben Gaster.
22
23*/
24#include <linux/moduleloader.h>
25#include <linux/elf.h>
26#include <linux/vmalloc.h>
27#include <linux/fs.h>
28#include <linux/string.h>
29#include <linux/kernel.h>
30
31#if 0
32#define DEBUGP printk
33#else
34#define DEBUGP(fmt...)
35#endif
36
37void *module_alloc(unsigned long size)
38{
39 if (size == 0)
40 return NULL;
41 return vmalloc(size);
42}
43
44
45/* Free memory returned from module_alloc */
46void module_free(struct module *mod, void *module_region)
47{
48 vfree(module_region);
49 /* FIXME: If module_region == mod->init_region, trim exception
50 table entries. */
51}
52
53/* We don't need anything special. */
54int module_frob_arch_sections(Elf_Ehdr *hdr,
55 Elf_Shdr *sechdrs,
56 char *secstrings,
57 struct module *mod)
58{
59 return 0;
60}
61
62int apply_relocate_add(Elf32_Shdr *sechdrs,
63 const char *strtab,
64 unsigned int symindex,
65 unsigned int relsec,
66 struct module *me)
67{
68 unsigned int i;
69 Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
70 Elf32_Sym *sym;
71 Elf32_Addr relocation;
72 uint32_t *location;
73 int align;
74 int is_shmedia;
75
76 DEBUGP("Applying relocate section %u to %u\n", relsec,
77 sechdrs[relsec].sh_info);
78 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
79 /* This is where to make the change */
80 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
81 + rel[i].r_offset;
82 /* This is the symbol it is referring to. Note that all
83 undefined symbols have been resolved. */
84 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
85 + ELF32_R_SYM(rel[i].r_info);
86 relocation = sym->st_value + rel[i].r_addend;
87 align = (int)location & 3;
88
89 /* For text addresses, bit2 of the st_other field indicates
90 * whether the symbol is SHmedia (1) or SHcompact (0). If
91 * SHmedia, the LSB of the symbol needs to be asserted
92 * for the CPU to be in SHmedia mode when it starts executing
93 * the branch target. */
94 is_shmedia = (sym->st_other & 4) ? 1 : 0;
95 if (is_shmedia) {
96 relocation |= 1;
97 }
98
99 switch (ELF32_R_TYPE(rel[i].r_info)) {
100 case R_SH_DIR32:
101 DEBUGP("R_SH_DIR32 @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
102 *location += relocation;
103 break;
104 case R_SH_REL32:
105 DEBUGP("R_SH_REL32 @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
106 relocation -= (Elf32_Addr) location;
107 *location += relocation;
108 break;
109 case R_SH_IMM_LOW16:
110 DEBUGP("R_SH_IMM_LOW16 @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
111 *location = (*location & ~0x3fffc00) |
112 ((relocation & 0xffff) << 10);
113 break;
114 case R_SH_IMM_MEDLOW16:
115 DEBUGP("R_SH_IMM_MEDLOW16 @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
116 *location = (*location & ~0x3fffc00) |
117 (((relocation >> 16) & 0xffff) << 10);
118 break;
119 case R_SH_IMM_LOW16_PCREL:
120 DEBUGP("R_SH_IMM_LOW16_PCREL @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
121 relocation -= (Elf32_Addr) location;
122 *location = (*location & ~0x3fffc00) |
123 ((relocation & 0xffff) << 10);
124 break;
125 case R_SH_IMM_MEDLOW16_PCREL:
126 DEBUGP("R_SH_IMM_MEDLOW16_PCREL @%08lx = %08lx\n", (unsigned long) location, (unsigned long) relocation);
127 relocation -= (Elf32_Addr) location;
128 *location = (*location & ~0x3fffc00) |
129 (((relocation >> 16) & 0xffff) << 10);
130 break;
131 default:
132 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
133 me->name, ELF32_R_TYPE(rel[i].r_info));
134 return -ENOEXEC;
135 }
136 }
137 return 0;
138}
139
140int apply_relocate(Elf32_Shdr *sechdrs,
141 const char *strtab,
142 unsigned int symindex,
143 unsigned int relsec,
144 struct module *me)
145{
146 printk(KERN_ERR "module %s: REL RELOCATION unsupported\n",
147 me->name);
148 return -ENOEXEC;
149}
150
151int module_finalize(const Elf_Ehdr *hdr,
152 const Elf_Shdr *sechdrs,
153 struct module *me)
154{
155 return 0;
156}
157
158void module_arch_cleanup(struct module *mod)
159{
160}
161
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