/* Kernel module help for sparc32. * * 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>void *module_alloc(unsigned long size){	void *ret;	/* We handle the zero case fine, unlike vmalloc */	if (size == 0)		return NULL;	ret = vmalloc(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, * and replace references to .func with _Func */int module_frob_arch_sections(Elf_Ehdr *hdr,			      Elf_Shdr *sechdrs,			      char *secstrings,			      struct module *mod){	unsigned int symidx;	Elf32_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 = (Elf32_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 (ELF32_ST_TYPE(sym[i].st_info) == STT_REGISTER)				sym[i].st_shndx = SHN_ABS;			else {				char *name = strtab + sym[i].st_name;				if (name[0] == '.') {					name[0] = '_';					name[1] = toupper(name[1]);				}			}		}	}	return 0;}int apply_relocate(Elf32_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(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;	u8 *location;	u32 *loc32;	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {		Elf32_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;		/* 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);		v = sym->st_value + rel[i].r_addend;		switch (ELF32_R_TYPE(rel[i].r_info)) {		case R_SPARC_32:			location[0] = v >> 24;			location[1] = v >> 16;			location[2] = v >>  8;			location[3] = v >>  0;			break;		case R_SPARC_WDISP30:			v -= (Elf32_Addr) location;			*loc32 = (*loc32 & ~0x3fffffff) |				((v >> 2) & 0x3fffffff);			break;		case R_SPARC_WDISP22:			v -= (Elf32_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) (ELF32_R_TYPE(rel[i].r_info) & 0xff));			return -ENOEXEC;		};	}	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){}