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authorGreg Ungerer <gerg@uclinux.org>2011-03-29 01:23:51 -0400
committerGreg Ungerer <gerg@uclinux.org>2011-07-24 21:20:40 -0400
commita66af29876b086d8279b48515b83ced66803fb15 (patch)
tree9d1819936fe48c20f43f355ecfec79de075d2c5d /arch
parent6617eaf33d04836d31ea687e79ba9fef02fdbbe9 (diff)
m68k: merge the non-mmu and mmu versions of module.c
The non-mmu and mmu versions of the module loader module.c are nearly identical. Merge them back to a single module.c. There is a little bit of re-ordering of the struct and enum definitions in module.h to keep the ifdefery to a minimum. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/m68k/include/asm/module.h31
-rw-r--r--arch/m68k/kernel/module.c130
-rw-r--r--arch/m68k/kernel/module_mm.c128
-rw-r--r--arch/m68k/kernel/module_no.c92
4 files changed, 140 insertions, 241 deletions
diff --git a/arch/m68k/include/asm/module.h b/arch/m68k/include/asm/module.h
index 5f21e11071bd..edffe66b7f49 100644
--- a/arch/m68k/include/asm/module.h
+++ b/arch/m68k/include/asm/module.h
@@ -1,46 +1,41 @@
1#ifndef _ASM_M68K_MODULE_H 1#ifndef _ASM_M68K_MODULE_H
2#define _ASM_M68K_MODULE_H 2#define _ASM_M68K_MODULE_H
3 3
4#ifdef CONFIG_MMU 4enum m68k_fixup_type {
5 m68k_fixup_memoffset,
6 m68k_fixup_vnode_shift,
7};
8
9struct m68k_fixup_info {
10 enum m68k_fixup_type type;
11 void *addr;
12};
5 13
6struct mod_arch_specific { 14struct mod_arch_specific {
7 struct m68k_fixup_info *fixup_start, *fixup_end; 15 struct m68k_fixup_info *fixup_start, *fixup_end;
8}; 16};
9 17
18#ifdef CONFIG_MMU
19
10#define MODULE_ARCH_INIT { \ 20#define MODULE_ARCH_INIT { \
11 .fixup_start = __start_fixup, \ 21 .fixup_start = __start_fixup, \
12 .fixup_end = __stop_fixup, \ 22 .fixup_end = __stop_fixup, \
13} 23}
14 24
15 25
16enum m68k_fixup_type {
17 m68k_fixup_memoffset,
18 m68k_fixup_vnode_shift,
19};
20
21struct m68k_fixup_info {
22 enum m68k_fixup_type type;
23 void *addr;
24};
25
26#define m68k_fixup(type, addr) \ 26#define m68k_fixup(type, addr) \
27 " .section \".m68k_fixup\",\"aw\"\n" \ 27 " .section \".m68k_fixup\",\"aw\"\n" \
28 " .long " #type "," #addr "\n" \ 28 " .long " #type "," #addr "\n" \
29 " .previous\n" 29 " .previous\n"
30 30
31#endif /* CONFIG_MMU */
32
31extern struct m68k_fixup_info __start_fixup[], __stop_fixup[]; 33extern struct m68k_fixup_info __start_fixup[], __stop_fixup[];
32 34
33struct module; 35struct module;
34extern void module_fixup(struct module *mod, struct m68k_fixup_info *start, 36extern void module_fixup(struct module *mod, struct m68k_fixup_info *start,
35 struct m68k_fixup_info *end); 37 struct m68k_fixup_info *end);
36 38
37#else
38
39struct mod_arch_specific {
40};
41
42#endif /* CONFIG_MMU */
43
44#define Elf_Shdr Elf32_Shdr 39#define Elf_Shdr Elf32_Shdr
45#define Elf_Sym Elf32_Sym 40#define Elf_Sym Elf32_Sym
46#define Elf_Ehdr Elf32_Ehdr 41#define Elf_Ehdr Elf32_Ehdr
diff --git a/arch/m68k/kernel/module.c b/arch/m68k/kernel/module.c
index 7ea203ce6b1a..34849c4c6e3d 100644
--- a/arch/m68k/kernel/module.c
+++ b/arch/m68k/kernel/module.c
@@ -1,5 +1,129 @@
1#ifdef CONFIG_MMU 1/*
2#include "module_mm.c" 2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file COPYING in the main directory of this archive
4 * for more details.
5 */
6
7#include <linux/moduleloader.h>
8#include <linux/elf.h>
9#include <linux/vmalloc.h>
10#include <linux/fs.h>
11#include <linux/string.h>
12#include <linux/kernel.h>
13
14#if 0
15#define DEBUGP printk
3#else 16#else
4#include "module_no.c" 17#define DEBUGP(fmt...)
18#endif
19
20#ifdef CONFIG_MODULES
21
22int apply_relocate(Elf32_Shdr *sechdrs,
23 const char *strtab,
24 unsigned int symindex,
25 unsigned int relsec,
26 struct module *me)
27{
28 unsigned int i;
29 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
30 Elf32_Sym *sym;
31 uint32_t *location;
32
33 DEBUGP("Applying relocate section %u to %u\n", relsec,
34 sechdrs[relsec].sh_info);
35 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
36 /* This is where to make the change */
37 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
38 + rel[i].r_offset;
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
44 switch (ELF32_R_TYPE(rel[i].r_info)) {
45 case R_68K_32:
46 /* We add the value into the location given */
47 *location += sym->st_value;
48 break;
49 case R_68K_PC32:
50 /* Add the value, subtract its postition */
51 *location += sym->st_value - (uint32_t)location;
52 break;
53 default:
54 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
55 me->name, ELF32_R_TYPE(rel[i].r_info));
56 return -ENOEXEC;
57 }
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 uint32_t *location;
72
73 DEBUGP("Applying relocate_add section %u to %u\n", relsec,
74 sechdrs[relsec].sh_info);
75 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
76 /* This is where to make the change */
77 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
78 + rel[i].r_offset;
79 /* This is the symbol it is referring to. Note that all
80 undefined symbols have been resolved. */
81 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
82 + ELF32_R_SYM(rel[i].r_info);
83
84 switch (ELF32_R_TYPE(rel[i].r_info)) {
85 case R_68K_32:
86 /* We add the value into the location given */
87 *location = rel[i].r_addend + sym->st_value;
88 break;
89 case R_68K_PC32:
90 /* Add the value, subtract its postition */
91 *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
92 break;
93 default:
94 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
95 me->name, ELF32_R_TYPE(rel[i].r_info));
96 return -ENOEXEC;
97 }
98 }
99 return 0;
100}
101
102int module_finalize(const Elf_Ehdr *hdr,
103 const Elf_Shdr *sechdrs,
104 struct module *mod)
105{
106 module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
107 return 0;
108}
109
110#endif /* CONFIG_MODULES */
111
112void module_fixup(struct module *mod, struct m68k_fixup_info *start,
113 struct m68k_fixup_info *end)
114{
115#ifdef CONFIG_MMU
116 struct m68k_fixup_info *fixup;
117
118 for (fixup = start; fixup < end; fixup++) {
119 switch (fixup->type) {
120 case m68k_fixup_memoffset:
121 *(u32 *)fixup->addr = m68k_memoffset;
122 break;
123 case m68k_fixup_vnode_shift:
124 *(u16 *)fixup->addr += m68k_virt_to_node_shift;
125 break;
126 }
127 }
5#endif 128#endif
129}
diff --git a/arch/m68k/kernel/module_mm.c b/arch/m68k/kernel/module_mm.c
deleted file mode 100644
index ceafc47c96d5..000000000000
--- a/arch/m68k/kernel/module_mm.c
+++ /dev/null
@@ -1,128 +0,0 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file COPYING in the main directory of this archive
4 * for more details.
5 */
6
7#include <linux/moduleloader.h>
8#include <linux/elf.h>
9#include <linux/vmalloc.h>
10#include <linux/fs.h>
11#include <linux/string.h>
12#include <linux/kernel.h>
13
14#if 0
15#define DEBUGP printk
16#else
17#define DEBUGP(fmt...)
18#endif
19
20#ifdef CONFIG_MODULES
21
22int apply_relocate(Elf32_Shdr *sechdrs,
23 const char *strtab,
24 unsigned int symindex,
25 unsigned int relsec,
26 struct module *me)
27{
28 unsigned int i;
29 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
30 Elf32_Sym *sym;
31 uint32_t *location;
32
33 DEBUGP("Applying relocate section %u to %u\n", relsec,
34 sechdrs[relsec].sh_info);
35 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
36 /* This is where to make the change */
37 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
38 + rel[i].r_offset;
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
44 switch (ELF32_R_TYPE(rel[i].r_info)) {
45 case R_68K_32:
46 /* We add the value into the location given */
47 *location += sym->st_value;
48 break;
49 case R_68K_PC32:
50 /* Add the value, subtract its postition */
51 *location += sym->st_value - (uint32_t)location;
52 break;
53 default:
54 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
55 me->name, ELF32_R_TYPE(rel[i].r_info));
56 return -ENOEXEC;
57 }
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 uint32_t *location;
72
73 DEBUGP("Applying relocate_add section %u to %u\n", relsec,
74 sechdrs[relsec].sh_info);
75 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
76 /* This is where to make the change */
77 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
78 + rel[i].r_offset;
79 /* This is the symbol it is referring to. Note that all
80 undefined symbols have been resolved. */
81 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
82 + ELF32_R_SYM(rel[i].r_info);
83
84 switch (ELF32_R_TYPE(rel[i].r_info)) {
85 case R_68K_32:
86 /* We add the value into the location given */
87 *location = rel[i].r_addend + sym->st_value;
88 break;
89 case R_68K_PC32:
90 /* Add the value, subtract its postition */
91 *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
92 break;
93 default:
94 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
95 me->name, ELF32_R_TYPE(rel[i].r_info));
96 return -ENOEXEC;
97 }
98 }
99 return 0;
100}
101
102int module_finalize(const Elf_Ehdr *hdr,
103 const Elf_Shdr *sechdrs,
104 struct module *mod)
105{
106 module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
107
108 return 0;
109}
110
111#endif /* CONFIG_MODULES */
112
113void module_fixup(struct module *mod, struct m68k_fixup_info *start,
114 struct m68k_fixup_info *end)
115{
116 struct m68k_fixup_info *fixup;
117
118 for (fixup = start; fixup < end; fixup++) {
119 switch (fixup->type) {
120 case m68k_fixup_memoffset:
121 *(u32 *)fixup->addr = m68k_memoffset;
122 break;
123 case m68k_fixup_vnode_shift:
124 *(u16 *)fixup->addr += m68k_virt_to_node_shift;
125 break;
126 }
127 }
128}
diff --git a/arch/m68k/kernel/module_no.c b/arch/m68k/kernel/module_no.c
deleted file mode 100644
index 5a097c6063fa..000000000000
--- a/arch/m68k/kernel/module_no.c
+++ /dev/null
@@ -1,92 +0,0 @@
1#include <linux/moduleloader.h>
2#include <linux/elf.h>
3#include <linux/vmalloc.h>
4#include <linux/fs.h>
5#include <linux/string.h>
6#include <linux/kernel.h>
7
8#if 0
9#define DEBUGP printk
10#else
11#define DEBUGP(fmt...)
12#endif
13
14int apply_relocate(Elf32_Shdr *sechdrs,
15 const char *strtab,
16 unsigned int symindex,
17 unsigned int relsec,
18 struct module *me)
19{
20 unsigned int i;
21 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
22 Elf32_Sym *sym;
23 uint32_t *location;
24
25 DEBUGP("Applying relocate section %u to %u\n", relsec,
26 sechdrs[relsec].sh_info);
27 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
28 /* This is where to make the change */
29 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
30 + rel[i].r_offset;
31 /* This is the symbol it is referring to. Note that all
32 undefined symbols have been resolved. */
33 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
34 + ELF32_R_SYM(rel[i].r_info);
35
36 switch (ELF32_R_TYPE(rel[i].r_info)) {
37 case R_68K_32:
38 /* We add the value into the location given */
39 *location += sym->st_value;
40 break;
41 case R_68K_PC32:
42 /* Add the value, subtract its postition */
43 *location += sym->st_value - (uint32_t)location;
44 break;
45 default:
46 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
47 me->name, ELF32_R_TYPE(rel[i].r_info));
48 return -ENOEXEC;
49 }
50 }
51 return 0;
52}
53
54int apply_relocate_add(Elf32_Shdr *sechdrs,
55 const char *strtab,
56 unsigned int symindex,
57 unsigned int relsec,
58 struct module *me)
59{
60 unsigned int i;
61 Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
62 Elf32_Sym *sym;
63 uint32_t *location;
64
65 DEBUGP("Applying relocate_add section %u to %u\n", relsec,
66 sechdrs[relsec].sh_info);
67 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
68 /* This is where to make the change */
69 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
70 + rel[i].r_offset;
71 /* This is the symbol it is referring to. Note that all
72 undefined symbols have been resolved. */
73 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
74 + ELF32_R_SYM(rel[i].r_info);
75
76 switch (ELF32_R_TYPE(rel[i].r_info)) {
77 case R_68K_32:
78 /* We add the value into the location given */
79 *location = rel[i].r_addend + sym->st_value;
80 break;
81 case R_68K_PC32:
82 /* Add the value, subtract its postition */
83 *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
84 break;
85 default:
86 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
87 me->name, ELF32_R_TYPE(rel[i].r_info));
88 return -ENOEXEC;
89 }
90 }
91 return 0;
92}
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