1 files changed, 146 insertions, 0 deletions

diff --git a/arch/sh/kernel/module.c b/arch/sh/kernel/module.c
new file mode 100644
index 000000000000..142a4e5b7ebc
--- /dev/null
+++ b/arch/sh/kernel/module.c
@@ -0,0 +1,146 @@
+/*  Kernel module help for SH.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+#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;
+}
+
+#define COPY_UNALIGNED_WORD(sw, tw, align) \
+{ \
+        void *__s = &(sw), *__t = &(tw); \
+        unsigned short *__s2 = __s, *__t2 = __t; \
+        unsigned char *__s1 = __s, *__t1 = __t; \
+        switch ((align)) \
+        { \
+        case 0: \
+                *(unsigned long *) __t = *(unsigned long *) __s; \
+                break; \
+        case 2: \
+                *__t2++ = *__s2++; \
+                *__t2 = *__s2; \
+                break; \
+        default: \
+                *__t1++ = *__s1++; \
+                *__t1++ = *__s1++; \
+                *__t1++ = *__s1++; \
+                *__t1 = *__s1; \
+                break; \
+        } \
+}
+
+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;
+        Elf32_Addr relocation;
+        uint32_t *location;
+        uint32_t value;
+        int align;
+
+        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);
+                relocation = sym->st_value + rel[i].r_addend;
+                align = (int)location & 3;
+
+                switch (ELF32_R_TYPE(rel[i].r_info)) {
+                case R_SH_DIR32:
+                        COPY_UNALIGNED_WORD (*location, value, align);
+                        value += relocation;
+                        COPY_UNALIGNED_WORD (value, *location, align);
+                        break;
+                case R_SH_REL32:
+                        relocation = (relocation - (Elf32_Addr) location);
+                        COPY_UNALIGNED_WORD (*location, value, align);
+                        value += relocation;
+                        COPY_UNALIGNED_WORD (value, *location, align);
+                        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(Elf32_Shdr *sechdrs,
+                       const char *strtab,
+                       unsigned int symindex,
+                       unsigned int relsec,
+                       struct module *me)
+{
+        printk(KERN_ERR "module %s: REL RELOCATION unsupported\n",
+               me->name);
+        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)
+{
+}