Home | History | Annotate | Download | only in backends 
      1 /* IA-64 specific symbolic name handling.
      2    Copyright (C) 2002-2009, 2014 Red Hat, Inc.
      3    This file is part of elfutils.
      4    Written by Ulrich Drepper <drepper (at) redhat.com>, 2002.
      5 
      6    This file is free software; you can redistribute it and/or modify
      7    it under the terms of either
      8 
      9      * the GNU Lesser General Public License as published by the Free
     10        Software Foundation; either version 3 of the License, or (at
     11        your option) any later version
     12 
     13    or
     14 
     15      * the GNU General Public License as published by the Free
     16        Software Foundation; either version 2 of the License, or (at
     17        your option) any later version
     18 
     19    or both in parallel, as here.
     20 
     21    elfutils is distributed in the hope that it will be useful, but
     22    WITHOUT ANY WARRANTY; without even the implied warranty of
     23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     24    General Public License for more details.
     25 
     26    You should have received copies of the GNU General Public License and
     27    the GNU Lesser General Public License along with this program.  If
     28    not, see <http://www.gnu.org/licenses/>.  */
     29 
     30 #ifdef HAVE_CONFIG_H
     31 # include <config.h>
     32 #endif
     33 
     34 #include <elf.h>
     35 #include <stddef.h>
     36 #include <assert.h>
     37 
     38 #define BACKEND		ia64_
     39 #include "libebl_CPU.h"
     40 
     41 
     42 const char *
     43 ia64_segment_type_name (int segment, char *buf __attribute__ ((unused)),
     44 			size_t len __attribute__ ((unused)))
     45 {
     46   switch (segment)
     47     {
     48     case PT_IA_64_ARCHEXT:
     49       return "IA_64_ARCHEXT";
     50     case PT_IA_64_UNWIND:
     51       return "IA_64_UNWIND";
     52     case PT_IA_64_HP_OPT_ANOT:
     53       return "IA_64_HP_OPT_ANOT";
     54     case PT_IA_64_HP_HSL_ANOT:
     55       return "IA_64_HP_HSL_ANOT";
     56     case PT_IA_64_HP_STACK:
     57       return "IA_64_HP_STACK";
     58     default:
     59       break;
     60     }
     61   return NULL;
     62 }
     63 
     64 const char *
     65 ia64_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
     66 		       size_t len __attribute__ ((unused)))
     67 {
     68   switch (tag)
     69     {
     70     case DT_IA_64_PLT_RESERVE:
     71       return "IA_64_PLT_RESERVE";
     72     default:
     73       break;
     74     }
     75   return NULL;
     76 }
     77 
     78 /* Check dynamic tag.  */
     79 bool
     80 ia64_dynamic_tag_check (int64_t tag)
     81 {
     82   return tag == DT_IA_64_PLT_RESERVE;
     83 }
     84 
     85 /* Check whether machine flags are valid.  */
     86 bool
     87 ia64_machine_flag_check (GElf_Word flags)
     88 {
     89   return ((flags &~ EF_IA_64_ABI64) == 0);
     90 }
     91 
     92 /* Check whether SHF_MASKPROC flags are valid.  */
     93 bool
     94 ia64_machine_section_flag_check (GElf_Xword sh_flags)
     95 {
     96   return (sh_flags &~ (SHF_IA_64_SHORT | SHF_IA_64_NORECOV)) == 0;
     97 }
     98 
     99 /* Return symbolic representation of section type.  */
    100 const char *
    101 ia64_section_type_name (int type,
    102 			char *buf __attribute__ ((unused)),
    103 			size_t len __attribute__ ((unused)))
    104 {
    105   switch (type)
    106     {
    107     case SHT_IA_64_EXT:
    108       return "IA_64_EXT";
    109     case SHT_IA_64_UNWIND:
    110       return "IA_64_UNWIND";
    111     }
    112 
    113   return NULL;
    114 }
    115 
    116 /* Check for the simple reloc types.  */
    117 Elf_Type
    118 ia64_reloc_simple_type (Ebl *ebl, int type)
    119 {
    120   switch (type)
    121     {
    122       /* The SECREL types when used with non-allocated sections
    123 	 like .debug_* are the same as direct absolute relocs
    124 	 applied to those sections, since a 0 section address is assumed.
    125 	 So we treat them the same here.  */
    126 
    127     case R_IA64_SECREL32MSB:
    128     case R_IA64_DIR32MSB:
    129       if (ebl->data == ELFDATA2MSB)
    130 	return ELF_T_WORD;
    131       break;
    132     case R_IA64_SECREL32LSB:
    133     case R_IA64_DIR32LSB:
    134       if (ebl->data == ELFDATA2LSB)
    135 	return ELF_T_WORD;
    136       break;
    137     case R_IA64_DIR64MSB:
    138     case R_IA64_SECREL64MSB:
    139       if (ebl->data == ELFDATA2MSB)
    140 	return ELF_T_XWORD;
    141       break;
    142     case R_IA64_SECREL64LSB:
    143     case R_IA64_DIR64LSB:
    144       if (ebl->data == ELFDATA2LSB)
    145 	return ELF_T_XWORD;
    146       break;
    147     }
    148 
    149   return ELF_T_NUM;
    150 }
    151 
    152 /* The SHT_IA_64_UNWIND section type is a valid target for relocation.  */
    153 bool
    154 ia64_check_reloc_target_type (Ebl *ebl __attribute__ ((unused)), Elf64_Word sh_type)
    155 {
    156   return sh_type == SHT_IA_64_UNWIND;
    157 }
    158