sparc: unify module.c

o Copy module_64.c to module.c
o Add all sparc specific bits to module.c
o delete module_32.c
o update Makefile

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 255 insertions, 0 deletions

diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
new file mode 100644
index 0000000..9027376
--- /dev/null
+++ b/arch/sparc/kernel/module.c
@@ -0,0 +1,255 @@
+/* Kernel module help for sparc64.
+ *
+ * Copyright (C) 2001 Rusty Russell.
+ * Copyright (C) 2002 David S. Miller.
+ */
+
+#include <linux/moduleloader.h>
+#include <linux/kernel.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <asm/processor.h>
+#include <asm/spitfire.h>
+
+#ifdef CONFIG_SPARC64
+static void *module_map(unsigned long size)
+{
+	struct vm_struct *area;
+
+	size = PAGE_ALIGN(size);
+	if (!size || 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);
+}
+
+static char *dot2underscore(char *name)
+{
+	return name;
+}
+#else
+static void *module_map(unsigned long size)
+{
+	return vmalloc(size);
+}
+
+/* Replace references to .func with _Func */
+static char *dot2underscore(char *name)
+{
+	if (name[0] == '.') {
+		name[0] = '_';
+                name[1] = toupper(name[1]);
+	}
+	return name;
+}
+#endif /* CONFIG_SPARC64 */
+
+void *module_alloc(unsigned long size)
+{
+	void *ret;
+
+	/* We handle the zero case fine, unlike vmalloc */
+	if (size == 0)
+		return NULL;
+
+	ret = module_map(size);
+	if (!ret)
+		ret = ERR_PTR(-ENOMEM);
+	else
+		memset(ret, 0, size);
+
+	return ret;
+}
+
+/* Free memory returned from module_core_alloc/module_init_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+	vfree(module_region);
+	/* FIXME: If module_region == mod->init_region, trim exception
+           table entries. */
+}
+
+/* Make generic code ignore STT_REGISTER dummy undefined symbols.  */
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+			      Elf_Shdr *sechdrs,
+			      char *secstrings,
+			      struct module *mod)
+{
+	unsigned int symidx;
+	Elf_Sym *sym;
+	char *strtab;
+	int i;
+
+	for (symidx = 0; sechdrs[symidx].sh_type != SHT_SYMTAB; symidx++) {
+		if (symidx == hdr->e_shnum-1) {
+			printk("%s: no symtab found.\n", mod->name);
+			return -ENOEXEC;
+		}
+	}
+	sym = (Elf_Sym *)sechdrs[symidx].sh_addr;
+	strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
+
+	for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
+		if (sym[i].st_shndx == SHN_UNDEF) {
+			if (ELF_ST_TYPE(sym[i].st_info) == STT_REGISTER) {
+				sym[i].st_shndx = SHN_ABS;
+			} else {
+				char *name = strtab + sym[i].st_name;
+				dot2underscore(name);
+			}
+		}
+	}
+	return 0;
+}
+
+int apply_relocate(Elf_Shdr *sechdrs,
+		   const char *strtab,
+		   unsigned int symindex,
+		   unsigned int relsec,
+		   struct module *me)
+{
+	printk(KERN_ERR "module %s: non-ADD RELOCATION unsupported\n",
+	       me->name);
+	return -ENOEXEC;
+}
+
+int apply_relocate_add(Elf_Shdr *sechdrs,
+		       const char *strtab,
+		       unsigned int symindex,
+		       unsigned int relsec,
+		       struct module *me)
+{
+	unsigned int i;
+	Elf_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+	Elf_Sym *sym;
+	u8 *location;
+	u32 *loc32;
+
+	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+		Elf_Addr v;
+
+		/* This is where to make the change */
+		location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+			+ rel[i].r_offset;
+		loc32 = (u32 *) location;
+
+#ifdef CONFIG_SPARC64
+		BUG_ON(((u64)location >> (u64)32) != (u64)0);
+#endif /* CONFIG_SPARC64 */
+
+		/* This is the symbol it is referring to.  Note that all
+		   undefined symbols have been resolved.  */
+		sym = (Elf_Sym *)sechdrs[symindex].sh_addr
+			+ ELF_R_SYM(rel[i].r_info);
+		v = sym->st_value + rel[i].r_addend;
+
+		switch (ELF_R_TYPE(rel[i].r_info) & 0xff) {
+#ifdef CONFIG_SPARC64
+		case R_SPARC_64:
+			location[0] = v >> 56;
+			location[1] = v >> 48;
+			location[2] = v >> 40;
+			location[3] = v >> 32;
+			location[4] = v >> 24;
+			location[5] = v >> 16;
+			location[6] = v >>  8;
+			location[7] = v >>  0;
+			break;
+
+		case R_SPARC_DISP32:
+			v -= (Elf_Addr) location;
+			*loc32 = v;
+			break;
+
+		case R_SPARC_WDISP19:
+			v -= (Elf_Addr) location;
+			*loc32 = (*loc32 & ~0x7ffff) |
+				((v >> 2) & 0x7ffff);
+			break;
+
+		case R_SPARC_OLO10:
+			*loc32 = (*loc32 & ~0x1fff) |
+				(((v & 0x3ff) +
+				  (ELF_R_TYPE(rel[i].r_info) >> 8))
+				 & 0x1fff);
+			break;
+#endif /* CONFIG_SPARC64 */
+
+		case R_SPARC_32:
+		case R_SPARC_UA32:
+			location[0] = v >> 24;
+			location[1] = v >> 16;
+			location[2] = v >>  8;
+			location[3] = v >>  0;
+			break;
+
+		case R_SPARC_WDISP30:
+			v -= (Elf_Addr) location;
+			*loc32 = (*loc32 & ~0x3fffffff) |
+				((v >> 2) & 0x3fffffff);
+			break;
+
+		case R_SPARC_WDISP22:
+			v -= (Elf_Addr) location;
+			*loc32 = (*loc32 & ~0x3fffff) |
+				((v >> 2) & 0x3fffff);
+			break;
+
+		case R_SPARC_LO10:
+			*loc32 = (*loc32 & ~0x3ff) | (v & 0x3ff);
+			break;
+
+		case R_SPARC_HI22:
+			*loc32 = (*loc32 & ~0x3fffff) |
+				((v >> 10) & 0x3fffff);
+			break;
+
+		default:
+			printk(KERN_ERR "module %s: Unknown relocation: %x\n",
+			       me->name,
+			       (int) (ELF_R_TYPE(rel[i].r_info) & 0xff));
+			return -ENOEXEC;
+		};
+	}
+	return 0;
+}
+
+#ifdef CONFIG_SPARC64
+int module_finalize(const Elf_Ehdr *hdr,
+		    const Elf_Shdr *sechdrs,
+		    struct module *me)
+{
+	/* Cheetah's I-cache is fully coherent.  */
+	if (tlb_type == spitfire) {
+		unsigned long va;
+
+		flushw_all();
+		for (va =  0; va < (PAGE_SIZE << 1); va += 32)
+			spitfire_put_icache_tag(va, 0x0);
+		__asm__ __volatile__("flush %g6");
+	}
+
+	return 0;
+}
+#else
+int module_finalize(const Elf_Ehdr *hdr,
+                    const Elf_Shdr *sechdrs,
+                    struct module *me)
+{
+        return 0;
+}
+#endif /* CONFIG_SPARC64 */
+
+void module_arch_cleanup(struct module *mod)
+{
+}