Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/m32r/kernel/module.c b/arch/m32r/kernel/module.c
new file mode 100644
index 0000000..f6a79a0
--- /dev/null
+++ b/arch/m32r/kernel/module.c
@@ -0,0 +1,259 @@
+/* Kernel module help for M32R.
+
+ 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/config.h>
+#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;
+#ifdef CONFIG_MMU
+ return vmalloc_exec(size);
+#else
+ return vmalloc(size);
+#endif
+}
+
+
+/* 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; \
+ } \
+}
+
+#define COPY_UNALIGNED_HWORD(sw, tw, align) \
+ { \
+ void *__s = &(sw), *__t = &(tw); \
+ unsigned short *__s2 = __s, *__t2 =__t; \
+ unsigned char *__s1 = __s, *__t1 =__t; \
+ switch ((align)) \
+ { \
+ case 0: \
+ *__t2 = *__s2; \
+ break; \
+ default: \
+ *__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;
+ unsigned short *hlocation;
+ unsigned short hvalue;
+ int svalue;
+ 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_M32R_32_RELA:
+ COPY_UNALIGNED_WORD (*location, value, align);
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_HI16_ULO_RELA:
+ COPY_UNALIGNED_WORD (*location, value, align);
+ relocation = (relocation >>16) & 0xffff;
+ /* RELA must has 0 at relocation field. */
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_HI16_SLO_RELA:
+ COPY_UNALIGNED_WORD (*location, value, align);
+ if (relocation & 0x8000) relocation += 0x10000;
+ relocation = (relocation >>16) & 0xffff;
+ /* RELA must has 0 at relocation field. */
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_16_RELA:
+ hlocation = (unsigned short *)location;
+ relocation = relocation & 0xffff;
+ /* RELA must has 0 at relocation field. */
+ hvalue = relocation;
+ COPY_UNALIGNED_WORD (hvalue, *hlocation, align);
+ break;
+ case R_M32R_SDA16_RELA:
+ case R_M32R_LO16_RELA:
+ COPY_UNALIGNED_WORD (*location, value, align);
+ relocation = relocation & 0xffff;
+ /* RELA must has 0 at relocation field. */
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_24_RELA:
+ COPY_UNALIGNED_WORD (*location, value, align);
+ relocation = relocation & 0xffffff;
+ /* RELA must has 0 at relocation field. */
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_18_PCREL_RELA:
+ relocation = (relocation - (Elf32_Addr) location);
+ if (relocation < -0x20000 || 0x1fffc < relocation)
+ {
+ printk(KERN_ERR "module %s: relocation overflow: %u\n",
+ me->name, relocation);
+ return -ENOEXEC;
+ }
+ COPY_UNALIGNED_WORD (*location, value, align);
+ if (value & 0xffff)
+ {
+ /* RELA must has 0 at relocation field. */
+ printk(KERN_ERR "module %s: illegal relocation field: %u\n",
+ me->name, value);
+ return -ENOEXEC;
+ }
+ relocation = (relocation >> 2) & 0xffff;
+ value += relocation;
+ COPY_UNALIGNED_WORD (value, *location, align);
+ break;
+ case R_M32R_10_PCREL_RELA:
+ hlocation = (unsigned short *)location;
+ relocation = (relocation - (Elf32_Addr) location);
+ COPY_UNALIGNED_HWORD (*hlocation, hvalue, align);
+ svalue = (int)hvalue;
+ svalue = (signed char)svalue << 2;
+ relocation += svalue;
+ relocation = (relocation >> 2) & 0xff;
+ hvalue = hvalue & 0xff00;
+ hvalue += relocation;
+ COPY_UNALIGNED_HWORD (hvalue, *hlocation, align);
+ break;
+ case R_M32R_26_PCREL_RELA:
+ relocation = (relocation - (Elf32_Addr) location);
+ if (relocation < -0x2000000 || 0x1fffffc < relocation)
+ {
+ printk(KERN_ERR "module %s: relocation overflow: %u\n",
+ me->name, relocation);
+ return -ENOEXEC;
+ }
+ COPY_UNALIGNED_WORD (*location, value, align);
+ if (value & 0xffffff)
+ {
+ /* RELA must has 0 at relocation field. */
+ printk(KERN_ERR "module %s: illegal relocation field: %u\n",
+ me->name, value);
+ return -ENOEXEC;
+ }
+ relocation = (relocation >> 2) & 0xffffff;
+ 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)
+{
+#if 0
+ printk(KERN_ERR "module %s: REL RELOCATION unsupported\n",
+ me->name);
+ return -ENOEXEC;
+#endif
+ return 0;
+
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+ const Elf_Shdr *sechdrs,
+ struct module *me)
+{
+ return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}