diff options
Diffstat (limited to 'arch/x86/kernel/module_64.c')
-rw-r--r-- | arch/x86/kernel/module_64.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/arch/x86/kernel/module_64.c b/arch/x86/kernel/module_64.c deleted file mode 100644 index 68ec7d87bb47..000000000000 --- a/arch/x86/kernel/module_64.c +++ /dev/null | |||
@@ -1,133 +0,0 @@ | |||
1 | /* Kernel module help for x86-64 | ||
2 | Copyright (C) 2001 Rusty Russell. | ||
3 | Copyright (C) 2002,2003 Andi Kleen, SuSE Labs. | ||
4 | |||
5 | This program is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published by | ||
7 | the Free Software Foundation; either version 2 of the License, or | ||
8 | (at your option) any later version. | ||
9 | |||
10 | This program is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program; if not, write to the Free Software | ||
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
18 | */ | ||
19 | #include <linux/moduleloader.h> | ||
20 | #include <linux/elf.h> | ||
21 | #include <linux/vmalloc.h> | ||
22 | #include <linux/fs.h> | ||
23 | #include <linux/string.h> | ||
24 | #include <linux/kernel.h> | ||
25 | #include <linux/mm.h> | ||
26 | #include <linux/slab.h> | ||
27 | #include <linux/bug.h> | ||
28 | |||
29 | #include <asm/system.h> | ||
30 | #include <asm/page.h> | ||
31 | #include <asm/pgtable.h> | ||
32 | |||
33 | #define DEBUGP(fmt...) | ||
34 | |||
35 | #ifndef CONFIG_UML | ||
36 | void *module_alloc(unsigned long size) | ||
37 | { | ||
38 | struct vm_struct *area; | ||
39 | |||
40 | if (!size) | ||
41 | return NULL; | ||
42 | size = PAGE_ALIGN(size); | ||
43 | if (size > MODULES_LEN) | ||
44 | return NULL; | ||
45 | |||
46 | area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END); | ||
47 | if (!area) | ||
48 | return NULL; | ||
49 | |||
50 | return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL_EXEC); | ||
51 | } | ||
52 | #endif | ||
53 | |||
54 | int apply_relocate_add(Elf64_Shdr *sechdrs, | ||
55 | const char *strtab, | ||
56 | unsigned int symindex, | ||
57 | unsigned int relsec, | ||
58 | struct module *me) | ||
59 | { | ||
60 | unsigned int i; | ||
61 | Elf64_Rela *rel = (void *)sechdrs[relsec].sh_addr; | ||
62 | Elf64_Sym *sym; | ||
63 | void *loc; | ||
64 | u64 val; | ||
65 | |||
66 | DEBUGP("Applying relocate section %u to %u\n", relsec, | ||
67 | sechdrs[relsec].sh_info); | ||
68 | for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { | ||
69 | /* This is where to make the change */ | ||
70 | loc = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr | ||
71 | + rel[i].r_offset; | ||
72 | |||
73 | /* This is the symbol it is referring to. Note that all | ||
74 | undefined symbols have been resolved. */ | ||
75 | sym = (Elf64_Sym *)sechdrs[symindex].sh_addr | ||
76 | + ELF64_R_SYM(rel[i].r_info); | ||
77 | |||
78 | DEBUGP("type %d st_value %Lx r_addend %Lx loc %Lx\n", | ||
79 | (int)ELF64_R_TYPE(rel[i].r_info), | ||
80 | sym->st_value, rel[i].r_addend, (u64)loc); | ||
81 | |||
82 | val = sym->st_value + rel[i].r_addend; | ||
83 | |||
84 | switch (ELF64_R_TYPE(rel[i].r_info)) { | ||
85 | case R_X86_64_NONE: | ||
86 | break; | ||
87 | case R_X86_64_64: | ||
88 | *(u64 *)loc = val; | ||
89 | break; | ||
90 | case R_X86_64_32: | ||
91 | *(u32 *)loc = val; | ||
92 | if (val != *(u32 *)loc) | ||
93 | goto overflow; | ||
94 | break; | ||
95 | case R_X86_64_32S: | ||
96 | *(s32 *)loc = val; | ||
97 | if ((s64)val != *(s32 *)loc) | ||
98 | goto overflow; | ||
99 | break; | ||
100 | case R_X86_64_PC32: | ||
101 | val -= (u64)loc; | ||
102 | *(u32 *)loc = val; | ||
103 | #if 0 | ||
104 | if ((s64)val != *(s32 *)loc) | ||
105 | goto overflow; | ||
106 | #endif | ||
107 | break; | ||
108 | default: | ||
109 | printk(KERN_ERR "module %s: Unknown rela relocation: %llu\n", | ||
110 | me->name, ELF64_R_TYPE(rel[i].r_info)); | ||
111 | return -ENOEXEC; | ||
112 | } | ||
113 | } | ||
114 | return 0; | ||
115 | |||
116 | overflow: | ||
117 | printk(KERN_ERR "overflow in relocation type %d val %Lx\n", | ||
118 | (int)ELF64_R_TYPE(rel[i].r_info), val); | ||
119 | printk(KERN_ERR "`%s' likely not compiled with -mcmodel=kernel\n", | ||
120 | me->name); | ||
121 | return -ENOEXEC; | ||
122 | } | ||
123 | |||
124 | int apply_relocate(Elf_Shdr *sechdrs, | ||
125 | const char *strtab, | ||
126 | unsigned int symindex, | ||
127 | unsigned int relsec, | ||
128 | struct module *me) | ||
129 | { | ||
130 | printk(KERN_ERR "non add relocation not supported\n"); | ||
131 | return -ENOSYS; | ||
132 | } | ||
133 | |||