diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
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| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/kernel/module.c | |
| download | olio-linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz olio-linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip  | |
Linux-2.6.12-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!
Diffstat (limited to 'arch/sparc/kernel/module.c')
| -rw-r--r-- | arch/sparc/kernel/module.c | 159 | 
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c new file mode 100644 index 00000000000..7931d6f9281 --- /dev/null +++ b/arch/sparc/kernel/module.c @@ -0,0 +1,159 @@ +/* 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> + +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 as in ppc64's dedotify. + */ +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] == '.') +					memmove(name, name+1, strlen(name)); +			} +		} +	} +	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) +{ +}  |