1 #include <linux/moduleloader.h>
3 #include <linux/vmalloc.h>
5 #include <linux/string.h>
6 #include <linux/kernel.h>
11 #define DEBUGP(fmt...)
14 void *module_alloc(unsigned long size)
22 /* Free memory returned from module_alloc */
23 void module_free(struct module *mod, void *module_region)
28 /* We don't need anything special. */
29 int module_frob_arch_sections(Elf_Ehdr *hdr,
37 int apply_relocate(Elf32_Shdr *sechdrs,
39 unsigned int symindex,
44 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
48 DEBUGP("Applying relocate section %u to %u\n", relsec,
49 sechdrs[relsec].sh_info);
50 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
51 /* This is where to make the change */
52 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
54 /* This is the symbol it is referring to. Note that all
55 undefined symbols have been resolved. */
56 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
57 + ELF32_R_SYM(rel[i].r_info);
59 switch (ELF32_R_TYPE(rel[i].r_info)) {
61 /* We add the value into the location given */
62 *location += sym->st_value;
65 /* Add the value, subtract its postition */
66 *location += sym->st_value - (uint32_t)location;
69 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
70 me->name, ELF32_R_TYPE(rel[i].r_info));
77 int apply_relocate_add(Elf32_Shdr *sechdrs,
79 unsigned int symindex,
84 Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
88 DEBUGP("Applying relocate_add section %u to %u\n", relsec,
89 sechdrs[relsec].sh_info);
90 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
91 /* This is where to make the change */
92 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
94 /* This is the symbol it is referring to. Note that all
95 undefined symbols have been resolved. */
96 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
97 + ELF32_R_SYM(rel[i].r_info);
99 switch (ELF32_R_TYPE(rel[i].r_info)) {
101 /* We add the value into the location given */
102 *location = rel[i].r_addend + sym->st_value;
105 /* Add the value, subtract its postition */
106 *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
109 printk(KERN_ERR "module %s: Unknown relocation: %u\n",
110 me->name, ELF32_R_TYPE(rel[i].r_info));
117 int module_finalize(const Elf_Ehdr *hdr,
118 const Elf_Shdr *sechdrs,
124 void module_arch_cleanup(struct module *mod)