m68k: merge m68k and m68knommu arch directories

There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.

This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif

On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.

With this in place there is now quite a bit of scope for merge cleanups
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 3 insertions, 153 deletions

diff --git a/arch/m68k/kernel/module.c b/arch/m68k/kernel/module.c
index cd6bcb1c957..7ea203ce6b1 100644
--- a/arch/m68k/kernel/module.c
+++ b/arch/m68k/kernel/module.c
@@ -1,155 +1,5 @@
-/*
- * 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
+#ifdef CONFIG_MMU
+#include "module_mm.c"
 #else
-#define DEBUGP(fmt...)
+#include "module_no.c"
 #endif
-
-#ifdef CONFIG_MODULES
-
-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);
-}
-
-/* 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)
-{
-	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;
-}
-
-void module_arch_cleanup(struct module *mod)
-{
-}
-
-#endif /* CONFIG_MODULES */
-
-void module_fixup(struct module *mod, struct m68k_fixup_info *start,
-		  struct m68k_fixup_info *end)
-{
-	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;
-		}
-	}
-}