From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: 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! --- arch/sparc/kernel/module.c | 159 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 arch/sparc/kernel/module.c (limited to 'arch/sparc/kernel/module.c') 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 +#include +#include +#include +#include +#include + +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) +{ +} -- cgit v1.2.3