1 files changed, 122 insertions, 0 deletions

diff --git a/arch/h8300/kernel/module.c b/arch/h8300/kernel/module.c
new file mode 100644
index 000000000000..4fd7138a6e03
--- /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)
+{
+}