| /* $Id: elf-machine.h,v 1.1.1.1 2012/03/29 17:21:02 uid42307 Exp $ |
| * ELF object machine specific format helpers |
| * |
| * Copyright (C) 2004-2007 Michael Urman |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef ELF_MACHINE_H_INCLUDED |
| #define ELF_MACHINE_H_INCLUDED |
| |
| #define YASM_WRITE_32I_L(p, i) do {\ |
| assert(yasm_intnum_check_size(i, 32, 0, 2)); \ |
| yasm_intnum_get_sized(i, p, 4, 32, 0, 0, 0); \ |
| p += 4; } while (0) |
| |
| #define YASM_WRITE_64I_L(p, i) do {\ |
| assert(yasm_intnum_check_size(i, 64, 0, 2)); \ |
| yasm_intnum_get_sized(i, p, 8, 64, 0, 0, 0); \ |
| p += 8; } while (0) |
| |
| #define YASM_WRITE_64C_L(p, hi, lo) do {\ |
| YASM_WRITE_32_L(p, lo); \ |
| YASM_WRITE_32_L(p, hi); } while (0) |
| |
| #define YASM_WRITE_64Z_L(p, i) YASM_WRITE_64C_L(p, 0, i) |
| |
| typedef int(*func_accepts_reloc)(size_t val, yasm_symrec *wrt, |
| yasm_symrec **ssyms); |
| typedef void(*func_write_symtab_entry)(unsigned char *bufp, |
| elf_symtab_entry *entry, |
| yasm_intnum *value_intn, |
| yasm_intnum *size_intn); |
| typedef void(*func_write_secthead)(unsigned char *bufp, elf_secthead *shead); |
| typedef void(*func_write_secthead_rel)(unsigned char *bufp, |
| elf_secthead *shead, |
| elf_section_index symtab_idx, |
| elf_section_index sindex); |
| |
| typedef void(*func_handle_reloc_addend)(yasm_intnum *intn, |
| elf_reloc_entry *reloc); |
| typedef unsigned int(*func_map_reloc_info_to_type)(elf_reloc_entry *reloc, |
| yasm_symrec **ssyms); |
| typedef void(*func_write_reloc)(unsigned char *bufp, |
| elf_reloc_entry *reloc, |
| unsigned int r_type, |
| unsigned int r_sym); |
| typedef void (*func_write_proghead)(unsigned char **bufpp, |
| elf_offset secthead_addr, |
| unsigned long secthead_count, |
| elf_section_index shstrtab_index); |
| |
| enum { |
| ELF_SSYM_SYM_RELATIVE = 1 << 0, |
| ELF_SSYM_CURPOS_ADJUST = 1 << 1, |
| ELF_SSYM_THREAD_LOCAL = 1 << 2 |
| }; |
| |
| typedef struct { |
| const char *name; /* should be something like ..name */ |
| const int sym_rel; /* symbol or section-relative? */ |
| const unsigned int reloc; /* relocation type */ |
| const unsigned int size; /* legal data size */ |
| } elf_machine_ssym; |
| |
| struct elf_machine_handler { |
| const char *arch; |
| const char *machine; |
| const char *reloc_section_prefix; |
| const unsigned long symtab_entry_size; |
| const unsigned long symtab_entry_align; |
| const unsigned long reloc_entry_size; |
| const unsigned long secthead_size; |
| const unsigned long proghead_size; |
| func_accepts_reloc accepts_reloc; |
| func_write_symtab_entry write_symtab_entry; |
| func_write_secthead write_secthead; |
| func_write_secthead_rel write_secthead_rel; |
| func_handle_reloc_addend handle_reloc_addend; |
| func_map_reloc_info_to_type map_reloc_info_to_type; |
| func_write_reloc write_reloc; |
| func_write_proghead write_proghead; |
| |
| const elf_machine_ssym *ssyms; /* array of "special" syms */ |
| const size_t num_ssyms; /* size of array */ |
| |
| const int bits; /* usually 32 or 64 */ |
| }; |
| |
| #endif /* ELF_MACHINE_H_INCLUDED */ |