Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / cris / kernel / module.c

diff --git a/kernel/arch/cris/kernel/module.c b/kernel/arch/cris/kernel/module.c
new file mode 100644 (file)
index 0000000..af04cb6
--- /dev/null
+++ b/kernel/arch/cris/kernel/module.c
@@ -0,0 +1,82 @@
+/*  Kernel module help for i386.
+    Copyright (C) 2001 Rusty Russell.
+
+    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>
+#include <linux/slab.h>
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(fmt , ...)
+#endif
+
+#ifdef CONFIG_ETRAX_KMALLOCED_MODULES
+void *module_alloc(unsigned long size)
+{
+       return kmalloc(size, GFP_KERNEL);
+}
+
+/* Free memory returned from module_alloc */
+void module_memfree(void *module_region)
+{
+       kfree(module_region);
+}
+#endif
+
+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 add 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
+                       = ((void *)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));
+               switch (ELF32_R_TYPE(rela[i].r_info)) {
+               case R_CRIS_32:
+                       *loc = sym->st_value + rela[i].r_addend;
+                       break;
+               case R_CRIS_32_PCREL:
+                       *loc = sym->st_value - (unsigned)loc + rela[i].r_addend - 4;
+                        break;
+               default:
+                       printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+                              me->name, ELF32_R_TYPE(rela[i].r_info));
+                       return -ENOEXEC;
+               }
+       }
+
+       return 0;
+}