Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 166 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/module.c b/arch/x86_64/kernel/module.c
new file mode 100644
index 00000000000..c2ffea8845e
--- /dev/null
+++ b/arch/x86_64/kernel/module.c
@@ -0,0 +1,166 @@
+/*  Kernel module help for x86-64
+    Copyright (C) 2001 Rusty Russell.
+    Copyright (C) 2002,2003 Andi Kleen, SuSE Labs.
+
+    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>
+
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+#define DEBUGP(fmt...) 
+
+void module_free(struct module *mod, void *module_region)
+{
+	vfree(module_region);
+}
+
+void *module_alloc(unsigned long size)
+{
+	struct vm_struct *area;
+
+	if (!size)
+		return NULL;
+	size = PAGE_ALIGN(size);
+	if (size > MODULES_LEN)
+		return NULL;
+
+	area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
+	if (!area)
+		return NULL;
+
+	return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL_EXEC);
+}
+
+/* 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_add(Elf64_Shdr *sechdrs,
+		   const char *strtab,
+		   unsigned int symindex,
+		   unsigned int relsec,
+		   struct module *me)
+{
+	unsigned int i;
+	Elf64_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+	Elf64_Sym *sym;
+	void *loc;
+	u64 val; 
+
+	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 */
+		loc = (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 = (Elf64_Sym *)sechdrs[symindex].sh_addr
+			+ ELF64_R_SYM(rel[i].r_info);
+
+	        DEBUGP("type %d st_value %Lx r_addend %Lx loc %Lx\n",
+		       (int)ELF64_R_TYPE(rel[i].r_info), 
+		       sym->st_value, rel[i].r_addend, (u64)loc);
+
+		val = sym->st_value + rel[i].r_addend; 
+
+		switch (ELF64_R_TYPE(rel[i].r_info)) {
+		case R_X86_64_NONE:
+			break;
+		case R_X86_64_64:
+			*(u64 *)loc = val;
+			break;
+		case R_X86_64_32:
+			*(u32 *)loc = val;
+			if (val != *(u32 *)loc)
+				goto overflow;
+			break;
+		case R_X86_64_32S:
+			*(s32 *)loc = val;
+			if ((s64)val != *(s32 *)loc)
+				goto overflow;
+			break;
+		case R_X86_64_PC32: 
+			val -= (u64)loc;
+			*(u32 *)loc = val;
+#if 0
+			if ((s64)val != *(s32 *)loc)
+				goto overflow; 
+#endif
+			break;
+		default:
+			printk(KERN_ERR "module %s: Unknown rela relocation: %Lu\n",
+			       me->name, ELF64_R_TYPE(rel[i].r_info));
+			return -ENOEXEC;
+		}
+	}
+	return 0;
+
+overflow:
+	printk(KERN_ERR "overflow in relocation type %d val %Lx\n", 
+	       (int)ELF64_R_TYPE(rel[i].r_info), val);
+	printk(KERN_ERR "`%s' likely not compiled with -mcmodel=kernel\n",
+	       me->name);
+	return -ENOEXEC;
+}
+
+int apply_relocate(Elf_Shdr *sechdrs,
+		   const char *strtab,
+		   unsigned int symindex,
+		   unsigned int relsec,
+		   struct module *me)
+{
+	printk("non add relocation not supported\n");
+	return -ENOSYS;
+} 
+
+extern void apply_alternatives(void *start, void *end); 
+
+int module_finalize(const Elf_Ehdr *hdr,
+		    const Elf_Shdr *sechdrs,
+		    struct module *me)
+{
+	const Elf_Shdr *s;
+	char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+
+	/* look for .altinstructions to patch */ 
+	for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { 
+		void *seg; 		
+		if (strcmp(".altinstructions", secstrings + s->sh_name))
+			continue;
+		seg = (void *)s->sh_addr; 
+		apply_alternatives(seg, seg + s->sh_size); 
+	} 	
+	return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}