This commit was manufactured by cvs2svn to create branch 'fedora'.

[linux-2.6.git] / arch / h8300 / kernel / module.c

diff --git a/arch/h8300/kernel/module.c b/arch/h8300/kernel/module.c
new file mode 100644 (file)
index 0000000..4fd7138
--- /dev/null
+++ b/arch/h8300/kernel/module.c
@@ -0,0 +1,122 @@
+#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
+#define DEBUGP(fmt...)
+#endif
+
+void *module_alloc(unsigned long size)
+{
+       if (size == 0)
+               return NULL;
+       return vmalloc(size);
+}
+
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+       vfree(module_region);
+       /* FIXME: If module_region == mod->init_region, trim exception
+           table entries. */
+}
+
+/* We don't need anything special. */
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+                             Elf_Shdr *sechdrs,
+                             char *secstrings,
+                             struct module *mod)
+{
+       return 0;
+}
+
+int apply_relocate(Elf32_Shdr *sechdrs,
+                  const char *strtab,
+                  unsigned int symindex,
+                  unsigned int relsec,
+                  struct module *me)
+{
+       printk(KERN_ERR "module %s: RELOCATION unsupported\n",
+              me->name);
+       return -ENOEXEC;
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs,
+                      const char *strtab,
+                      unsigned int symindex,
+                      unsigned int relsec,
+                      struct module *me)
+{
+       unsigned int i;
+       Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
+
+       DEBUGP("Applying relocate section %u to %u\n", relsec,
+              sechdrs[relsec].sh_info);
+       for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) {
+               /* This is where to make the change */
+               uint32_t *loc = (uint32_t *)(sechdrs[sechdrs[relsec].sh_info].sh_addr
+                                            + rela[i].r_offset);
+               /* This is the symbol it is referring to.  Note that all
+                  undefined symbols have been resolved.  */
+               Elf32_Sym *sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+                       + ELF32_R_SYM(rela[i].r_info);
+               uint32_t v = sym->st_value + rela[i].r_addend;
+
+               switch (ELF32_R_TYPE(rela[i].r_info)) {
+               case R_H8_DIR24R8:
+                       loc = (uint32_t *)((uint32_t)loc - 1);
+                       *loc = (*loc & 0xff000000) | ((*loc & 0xffffff) + v);
+                       break;
+               case R_H8_DIR24A8:
+                       if (ELF32_R_SYM(rela[i].r_info))
+                               *loc += v;
+                       break;
+               case R_H8_DIR32:
+               case R_H8_DIR32A16:
+                       *loc += v;
+                       break;
+               case R_H8_PCREL16:
+                       v -= (unsigned long)loc + 2;
+                       if ((Elf32_Sword)v > 0x7fff || 
+                           (Elf32_Sword)v < -(Elf32_Sword)0x8000)
+                               goto overflow;
+                       else 
+                               *(unsigned short *)loc = v;
+                       break;
+               case R_H8_PCREL8:
+                       v -= (unsigned long)loc + 1;
+                       if ((Elf32_Sword)v > 0x7f || 
+                           (Elf32_Sword)v < -(Elf32_Sword)0x80)
+                               goto overflow;
+                       else 
+                               *(unsigned char *)loc = v;
+                       break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rela[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+       return 0;
+ overflow:
+       printk(KERN_ERR "module %s: relocation offset overflow: %08x\n",
+              me->name, rela[i].r_offset);
+       return -ENOEXEC;
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+                   const Elf_Shdr *sechdrs,
+                   struct module *me)
+{
+       return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}