diff options
Diffstat (limited to 'mdk-stage1/insmod-modutils/obj/obj_mips.c')
| -rw-r--r-- | mdk-stage1/insmod-modutils/obj/obj_mips.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_mips.c b/mdk-stage1/insmod-modutils/obj/obj_mips.c deleted file mode 100644 index c2315b659..000000000 --- a/mdk-stage1/insmod-modutils/obj/obj_mips.c +++ /dev/null @@ -1,238 +0,0 @@ -/* MIPS specific support for Elf loading and relocation. - Copyright 1997, 1998 Linux International. - Contributed by Ralf Baechle <ralf@gnu.ai.mit.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 <stdlib.h> -#include <assert.h> - -#include <module.h> -#include <obj.h> -#include <util.h> - - -/*======================================================================*/ - -struct mips_hi16 -{ - struct mips_hi16 *next; - Elf32_Addr *addr; - Elf32_Addr value; -}; - -struct mips_file -{ - struct obj_file root; - struct mips_hi16 *mips_hi16_list; -}; - -/*======================================================================*/ - -struct obj_file * -arch_new_file (void) -{ - struct mips_file *mf; - - mf = xmalloc(sizeof(*mf)); - mf->mips_hi16_list = NULL; - - return (struct obj_file *) mf; -} - -struct obj_section * -arch_new_section (void) -{ - return xmalloc(sizeof(struct obj_section)); -} - -struct obj_symbol * -arch_new_symbol (void) -{ - return xmalloc(sizeof(struct obj_symbol)); -} - -int -arch_load_proc_section(struct obj_section *sec, int fp) -{ - switch (sec->header.sh_type) - { - case SHT_MIPS_DEBUG: - case SHT_MIPS_REGINFO: - /* Actually these two sections are as useless as something can be ... */ - sec->contents = NULL; - break; - - case SHT_MIPS_LIBLIST: - case SHT_MIPS_CONFLICT: - case SHT_MIPS_GPTAB: - case SHT_MIPS_UCODE: - case SHT_MIPS_OPTIONS: - case SHT_MIPS_DWARF: - case SHT_MIPS_EVENTS: - /* These shouldn't ever be in a module file. */ - error("Unhandled section header type: %08x", sec->header.sh_type); - - default: - /* We don't even know the type. This time it might as well be a - supernova. */ - error("Unknown section header type: %08x", sec->header.sh_type); - return -1; - } - - 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 mips_file *mf = (struct mips_file *)f; - Elf32_Addr *loc = (Elf32_Addr *)(targsec->contents + rel->r_offset); - Elf32_Addr dot = targsec->header.sh_addr + rel->r_offset; - enum obj_reloc ret = obj_reloc_ok; - - /* _gp_disp is a magic symbol for PIC which is not supported for - the kernel and loadable modules. */ - if (strcmp(sym->name, "_gp_disp") == 0) - ret = obj_reloc_unhandled; - - switch (ELF32_R_TYPE(rel->r_info)) - { - case R_MIPS_NONE: - break; - - case R_MIPS_32: - *loc += v; - break; - - case R_MIPS_26: - if (v % 4) - ret = obj_reloc_dangerous; - if ((v & 0xf0000000) != ((dot + 4) & 0xf0000000)) - ret = obj_reloc_overflow; - *loc = (*loc & ~0x03ffffff) | ((*loc + (v >> 2)) & 0x03ffffff); - break; - - case R_MIPS_HI16: - { - struct mips_hi16 *n; - - /* We cannot relocate this one now because we don't know the value - of the carry we need to add. Save the information, and let LO16 - do the actual relocation. */ - n = (struct mips_hi16 *) xmalloc (sizeof *n); - n->addr = loc; - n->value = v; - n->next = mf->mips_hi16_list; - mf->mips_hi16_list = n; - break; - } - - case R_MIPS_LO16: - { - unsigned long insnlo = *loc; - Elf32_Addr val, vallo; - - /* Sign extend the addend we extract from the lo insn. */ - vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000; - - if (mf->mips_hi16_list != NULL) - { - struct mips_hi16 *l; - - l = mf->mips_hi16_list; - while (l != NULL) - { - struct mips_hi16 *next; - unsigned long insn; - - /* The value for the HI16 had best be the same. */ - assert(v == l->value); - - /* Do the HI16 relocation. Note that we actually don't - need to know anything about the LO16 itself, except where - to find the low 16 bits of the addend needed by the LO16. */ - insn = *l->addr; - val = ((insn & 0xffff) << 16) + vallo; - val += v; - - /* Account for the sign extension that will happen in the - low bits. */ - val = ((val >> 16) + ((val & 0x8000) != 0)) & 0xffff; - - insn = (insn &~ 0xffff) | val; - *l->addr = insn; - - next = l->next; - free(l); - l = next; - } - - mf->mips_hi16_list = NULL; - } - - /* Ok, we're done with the HI16 relocs. Now deal with the LO16. */ - val = v + vallo; - insnlo = (insnlo & ~0xffff) | (val & 0xffff); - *loc = insnlo; - break; - } - - default: - ret = obj_reloc_unhandled; - break; - } - - return ret; -} - -int -arch_create_got (struct obj_file *f) -{ - 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; -} |