diff options
Diffstat (limited to 'mdk-stage1/insmod-modutils/obj/obj_i386.c')
| -rw-r--r-- | mdk-stage1/insmod-modutils/obj/obj_i386.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_i386.c b/mdk-stage1/insmod-modutils/obj/obj_i386.c deleted file mode 100644 index 28df3448c..000000000 --- a/mdk-stage1/insmod-modutils/obj/obj_i386.c +++ /dev/null @@ -1,245 +0,0 @@ -/* i386 specific support for Elf loading and relocation. - Copyright 1996, 1997 Linux International. - - Contributed by Richard Henderson <rth@tamu.edu> - - This file is part of the Linux modutils. - - 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. */ - -#ident "$Id$" - -#include <string.h> -#include <assert.h> - -#include <module.h> -#include <obj.h> -#include <util.h> - - -/*======================================================================*/ - -struct i386_got_entry -{ - int offset; - unsigned offset_done : 1; - unsigned reloc_done : 1; -}; - -struct i386_file -{ - struct obj_file root; - struct obj_section *got; -}; - -struct i386_symbol -{ - struct obj_symbol root; - struct i386_got_entry gotent; -}; - - -/*======================================================================*/ - -struct obj_file * -arch_new_file (void) -{ - struct i386_file *f; - f = xmalloc(sizeof(*f)); - f->got = NULL; - return &f->root; -} - -struct obj_section * -arch_new_section (void) -{ - return xmalloc(sizeof(struct obj_section)); -} - -struct obj_symbol * -arch_new_symbol (void) -{ - struct i386_symbol *sym; - sym = xmalloc(sizeof(*sym)); - memset(&sym->gotent, 0, sizeof(sym->gotent)); - return &sym->root; -} - -int -arch_load_proc_section(struct obj_section *sec, int fp) -{ - /* Assume it's just a debugging section that we can safely - ignore ... */ - sec->contents = NULL; - - return 0; -} - -enum obj_reloc -arch_apply_relocation (struct obj_file *f, - struct obj_section *targsec, - struct obj_section *symsec, - struct obj_symbol *sym, - Elf32_Rel *rel, - Elf32_Addr v) -{ - struct i386_file *ifile = (struct i386_file *)f; - struct i386_symbol *isym = (struct i386_symbol *)sym; - - Elf32_Addr *loc = (Elf32_Addr *)(targsec->contents + rel->r_offset); - Elf32_Addr dot = targsec->header.sh_addr + rel->r_offset; - Elf32_Addr got = ifile->got ? ifile->got->header.sh_addr : 0; - - enum obj_reloc ret = obj_reloc_ok; - - switch (ELF32_R_TYPE(rel->r_info)) - { - case R_386_NONE: - break; - - case R_386_32: - *loc += v; - break; - - case R_386_PLT32: - case R_386_PC32: - *loc += v - dot; - break; - - case R_386_GLOB_DAT: - case R_386_JMP_SLOT: - *loc = v; - break; - - case R_386_RELATIVE: - *loc += f->baseaddr; - break; - - case R_386_GOTPC: - assert(got != 0); - *loc += got - dot; - break; - - case R_386_GOT32: - assert(isym != NULL); - if (!isym->gotent.reloc_done) - { - isym->gotent.reloc_done = 1; - *(Elf32_Addr *)(ifile->got->contents + isym->gotent.offset) = v; - } - *loc += isym->gotent.offset; - break; - - case R_386_GOTOFF: - assert(got != 0); - *loc += v - got; - break; - - default: - ret = obj_reloc_unhandled; - break; - } - - return ret; -} - -int -arch_create_got (struct obj_file *f) -{ - struct i386_file *ifile = (struct i386_file *)f; - int i, n, offset = 0, gotneeded = 0; - - n = ifile->root.header.e_shnum; - for (i = 0; i < n; ++i) - { - struct obj_section *relsec, *symsec, *strsec; - Elf32_Rel *rel, *relend; - Elf32_Sym *symtab; - const char *strtab; - - relsec = ifile->root.sections[i]; - if (relsec->header.sh_type != SHT_REL) - continue; - - symsec = ifile->root.sections[relsec->header.sh_link]; - strsec = ifile->root.sections[symsec->header.sh_link]; - - rel = (Elf32_Rel *)relsec->contents; - relend = rel + (relsec->header.sh_size / sizeof(Elf32_Rel)); - symtab = (Elf32_Sym *)symsec->contents; - strtab = (const char *)strsec->contents; - - for (; rel < relend; ++rel) - { - Elf32_Sym *extsym; - struct i386_symbol *intsym; - const char *name; - - switch (ELF32_R_TYPE(rel->r_info)) - { - case R_386_GOTPC: - case R_386_GOTOFF: - gotneeded = 1; - default: - continue; - - case R_386_GOT32: - break; - } - - extsym = &symtab[ELF32_R_SYM(rel->r_info)]; - if (extsym->st_name) - name = strtab + extsym->st_name; - else - name = f->sections[extsym->st_shndx]->name; - intsym = (struct i386_symbol *)obj_find_symbol(&ifile->root, name); - - if (!intsym->gotent.offset_done) - { - intsym->gotent.offset_done = 1; - intsym->gotent.offset = offset; - offset += 4; - } - } - } - - if (offset > 0 || gotneeded) - ifile->got = obj_create_alloced_section(&ifile->root, ".got", 4, offset); - - return 1; -} - -int -arch_init_module (struct obj_file *f, struct module *mod) -{ - return 1; -} - -int -arch_finalize_section_address(struct obj_file *f, Elf32_Addr base) -{ - int i, n = f->header.e_shnum; - - f->baseaddr = base; - for (i = 0; i < n; ++i) - f->sections[i]->header.sh_addr += base; - return 1; -} - -int -arch_archdata (struct obj_file *fin, struct obj_section *sec) -{ - return 0; -} |