LCOV - code coverage report
Current view: top level - backends - loongarch_symbol.c (source / functions) Hit Total Coverage
Test: elfutils-0.191 Lines: 0 40 0.0 %
Date: 2024-06-28 20:06:08 Functions: 0 3 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 33 0.0 %

           Branch data     Line data    Source code
       1                 :            : /* LoongArch specific symbolic name handling.
       2                 :            :    Copyright (C) 2022 Hengqi Chen
       3                 :            :    This file is part of elfutils.
       4                 :            : 
       5                 :            :    This file is free software; you can redistribute it and/or modify
       6                 :            :    it under the terms of either
       7                 :            : 
       8                 :            :      * the GNU Lesser General Public License as published by the Free
       9                 :            :        Software Foundation; either version 3 of the License, or (at
      10                 :            :        your option) any later version
      11                 :            : 
      12                 :            :    or
      13                 :            : 
      14                 :            :      * the GNU General Public License as published by the Free
      15                 :            :        Software Foundation; either version 2 of the License, or (at
      16                 :            :        your option) any later version
      17                 :            : 
      18                 :            :    or both in parallel, as here.
      19                 :            : 
      20                 :            :    elfutils is distributed in the hope that it will be useful, but
      21                 :            :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22                 :            :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23                 :            :    General Public License for more details.
      24                 :            : 
      25                 :            :    You should have received copies of the GNU General Public License and
      26                 :            :    the GNU Lesser General Public License along with this program.  If
      27                 :            :    not, see <http://www.gnu.org/licenses/>.  */
      28                 :            : 
      29                 :            : #ifdef HAVE_CONFIG_H
      30                 :            : # include <config.h>
      31                 :            : #endif
      32                 :            : 
      33                 :            : #include <assert.h>
      34                 :            : #include <elf.h>
      35                 :            : #include <stddef.h>
      36                 :            : #include <string.h>
      37                 :            : 
      38                 :            : #define BACKEND loongarch_
      39                 :            : #include "libebl_CPU.h"
      40                 :            : 
      41                 :            : 
      42                 :            : /* Check for the simple reloc types.  */
      43                 :            : Elf_Type
      44                 :          0 : loongarch_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
      45                 :            :                              int *addsub)
      46                 :            : {
      47   [ #  #  #  #  :          0 :   switch (type)
             #  #  #  #  
                      # ]
      48                 :            :     {
      49                 :            :     case R_LARCH_32:
      50                 :            :       return ELF_T_WORD;
      51                 :            :     case R_LARCH_64:
      52                 :            :       return ELF_T_XWORD;
      53                 :          0 :     case R_LARCH_ADD16:
      54                 :          0 :       *addsub = 1;
      55                 :          0 :       return ELF_T_HALF;
      56                 :          0 :     case R_LARCH_ADD32:
      57                 :          0 :       *addsub = 1;
      58                 :          0 :       return ELF_T_WORD;
      59                 :          0 :     case R_LARCH_ADD64:
      60                 :          0 :       *addsub = 1;
      61                 :          0 :       return ELF_T_XWORD;
      62                 :          0 :     case R_LARCH_SUB16:
      63                 :          0 :       *addsub = -1;
      64                 :          0 :       return ELF_T_HALF;
      65                 :          0 :     case R_LARCH_SUB32:
      66                 :          0 :       *addsub = -1;
      67                 :          0 :       return ELF_T_WORD;
      68                 :          0 :     case R_LARCH_SUB64:
      69                 :          0 :       *addsub = -1;
      70                 :          0 :       return ELF_T_XWORD;
      71                 :            :     default:
      72                 :            :       return ELF_T_NUM;
      73                 :            :     }
      74                 :            : }
      75                 :            : 
      76                 :            : bool
      77                 :          0 : loongarch_machine_flag_check (GElf_Word flags)
      78                 :            : {
      79                 :          0 :   return ((flags &~ (EF_LARCH_ABI_MODIFIER_MASK
      80                 :          0 :                      | EF_LARCH_OBJABI_V1)) == 0);
      81                 :            : }
      82                 :            : 
      83                 :            : /* Check whether given symbol's st_value and st_size are OK despite failing
      84                 :            :    normal checks.  */
      85                 :            : bool
      86                 :          0 : loongarch_check_special_symbol (Elf *elf, const GElf_Sym *sym,
      87                 :            :                             const char *name, const GElf_Shdr *destshdr)
      88                 :            : {
      89         [ #  # ]:          0 :   if (name != NULL
      90         [ #  # ]:          0 :       && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
      91                 :            :     {
      92                 :          0 :       size_t shstrndx;
      93         [ #  # ]:          0 :       if (elf_getshdrstrndx (elf, &shstrndx) != 0)
      94                 :          0 :         return false;
      95                 :          0 :       const char *sname = elf_strptr (elf, shstrndx, destshdr->sh_name);
      96         [ #  # ]:          0 :       if (sname != NULL
      97   [ #  #  #  # ]:          0 :           && (strcmp (sname, ".got") == 0 || strcmp (sname, ".got.plt") == 0))
      98                 :            :         {
      99                 :            :           Elf_Scn *scn = NULL;
     100         [ #  # ]:          0 :           while ((scn = elf_nextscn (elf, scn)) != NULL)
     101                 :            :             {
     102                 :          0 :               GElf_Shdr shdr_mem;
     103                 :          0 :               GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
     104         [ #  # ]:          0 :               if (shdr != NULL)
     105                 :            :                 {
     106                 :          0 :                   sname = elf_strptr (elf, shstrndx, shdr->sh_name);
     107   [ #  #  #  # ]:          0 :                   if (sname != NULL && strcmp (sname, ".got") == 0)
     108                 :          0 :                     return (sym->st_value >= shdr->sh_addr
     109   [ #  #  #  # ]:          0 :                             && sym->st_value < shdr->sh_addr + shdr->sh_size);
     110                 :            :                 }
     111                 :            :             }
     112                 :            :         }
     113                 :            :     }
     114                 :            : 
     115                 :            :   return false;
     116                 :            : }

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