Merge branch 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / arch / m68k / kernel / module.c

diff --git a/arch/m68k/kernel/module.c b/arch/m68k/kernel/module.c
index 7ea203c..34849c4 100644 (file)
--- a/arch/m68k/kernel/module.c
+++ b/arch/m68k/kernel/module.c
@@ -1,5 +1,129 @@
-#ifdef CONFIG_MMU
-#include "module_mm.c"
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/moduleloader.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#if 0
+#define DEBUGP printk
 #else
-#include "module_no.c"
+#define DEBUGP(fmt...)
+#endif
+
+#ifdef CONFIG_MODULES
+
+int apply_relocate(Elf32_Shdr *sechdrs,
+                  const char *strtab,
+                  unsigned int symindex,
+                  unsigned int relsec,
+                  struct module *me)
+{
+       unsigned int i;
+       Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
+       Elf32_Sym *sym;
+       uint32_t *location;
+
+       DEBUGP("Applying relocate section %u to %u\n", relsec,
+              sechdrs[relsec].sh_info);
+       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+               /* This is where to make the change */
+               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+                       + rel[i].r_offset;
+               /* This is the symbol it is referring to.  Note that all
+                  undefined symbols have been resolved.  */
+               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+                       + ELF32_R_SYM(rel[i].r_info);
+
+               switch (ELF32_R_TYPE(rel[i].r_info)) {
+               case R_68K_32:
+                       /* We add the value into the location given */
+                       *location += sym->st_value;
+                       break;
+               case R_68K_PC32:
+                       /* Add the value, subtract its postition */
+                       *location += sym->st_value - (uint32_t)location;
+                       break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rel[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+       return 0;
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs,
+                      const char *strtab,
+                      unsigned int symindex,
+                      unsigned int relsec,
+                      struct module *me)
+{
+       unsigned int i;
+       Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+       Elf32_Sym *sym;
+       uint32_t *location;
+
+       DEBUGP("Applying relocate_add section %u to %u\n", relsec,
+              sechdrs[relsec].sh_info);
+       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+               /* This is where to make the change */
+               location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+                       + rel[i].r_offset;
+               /* This is the symbol it is referring to.  Note that all
+                  undefined symbols have been resolved.  */
+               sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+                       + ELF32_R_SYM(rel[i].r_info);
+
+               switch (ELF32_R_TYPE(rel[i].r_info)) {
+               case R_68K_32:
+                       /* We add the value into the location given */
+                       *location = rel[i].r_addend + sym->st_value;
+                       break;
+               case R_68K_PC32:
+                       /* Add the value, subtract its postition */
+                       *location = rel[i].r_addend + sym->st_value - (uint32_t)location;
+                       break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rel[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+       return 0;
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+                   const Elf_Shdr *sechdrs,
+                   struct module *mod)
+{
+       module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
+       return 0;
+}
+
+#endif /* CONFIG_MODULES */
+
+void module_fixup(struct module *mod, struct m68k_fixup_info *start,
+                 struct m68k_fixup_info *end)
+{
+#ifdef CONFIG_MMU
+       struct m68k_fixup_info *fixup;
+
+       for (fixup = start; fixup < end; fixup++) {
+               switch (fixup->type) {
+               case m68k_fixup_memoffset:
+                       *(u32 *)fixup->addr = m68k_memoffset;
+                       break;
+               case m68k_fixup_vnode_shift:
+                       *(u16 *)fixup->addr += m68k_virt_to_node_shift;
+                       break;
+               }
+       }
 #endif
+}