Annotation of prex/boot/i386/i386/elf_reloc.c, Revision 1.1
1.1 ! nbrk 1: /*-
! 2: * Copyright (c) 2006, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29: #include <boot.h>
! 30: #include <sys/elf.h>
! 31: #include <prex/bootinfo.h>
! 32: #include <platform.h>
! 33:
! 34: #ifdef DEBUG_ELF
! 35: #define DPRINTF(a) printf a
! 36: #else
! 37: #define DPRINTF(a)
! 38: #endif
! 39:
! 40: int
! 41: relocate_rel(Elf32_Rel *rel, Elf32_Addr sym_val, char *target_sect)
! 42: {
! 43: Elf32_Addr *where;
! 44:
! 45: where = (Elf32_Addr *)(target_sect + rel->r_offset);
! 46:
! 47: switch (ELF32_R_TYPE(rel->r_info)) {
! 48: case R_386_NONE:
! 49: break;
! 50: case R_386_32:
! 51: *where += (Elf32_Addr)phys_to_virt(sym_val);
! 52: DPRINTF(("R_386_32: %x -> %x\n", where, *where));
! 53: break;
! 54: case R_386_PC32:
! 55: *where += sym_val - (Elf32_Addr)where;
! 56: DPRINTF(("R_386_PC32: %x -> %x\n", where, *where));
! 57: break;
! 58: default:
! 59: panic("relocation fail");
! 60: return -1;
! 61: }
! 62: return 0;
! 63: }
! 64:
! 65: int
! 66: relocate_rela(Elf32_Rela *rela, Elf32_Addr sym_val, char *target_sec)
! 67: {
! 68:
! 69: panic("invalid relocation type");
! 70: return -1;
! 71: }
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