LCOV - code coverage report
Current view: top level - libasm - asm_addint8.c (source / functions) Hit Total Coverage
Test: elfutils-0.185 Lines: 11 20 55.0 %
Date: 2021-05-22 21:00:18 Functions: 1 1 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 6 14 42.9 %

           Branch data     Line data    Source code
       1                 :            : /* Add integer to a section.
       2                 :            :    Copyright (C) 2002, 2005 Red Hat, Inc.
       3                 :            :    This file is part of elfutils.
       4                 :            :    Written by Ulrich Drepper <drepper@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 <byteswap.h>
      35                 :            : #include <endian.h>
      36                 :            : #include <inttypes.h>
      37                 :            : #include <string.h>
      38                 :            : 
      39                 :            : #include <libasmP.h>
      40                 :            : 
      41                 :            : #ifndef SIZE
      42                 :            : # define SIZE 8
      43                 :            : #endif
      44                 :            : 
      45                 :            : #define FCT(size) _FCT(size)
      46                 :            : #define _FCT(size) asm_addint##size
      47                 :            : #define TYPE(size) _TYPE(size)
      48                 :            : #define _TYPE(size) int##size##_t
      49                 :            : #define BSWAP(size) _BSWAP(size)
      50                 :            : #define _BSWAP(size) bswap_##size
      51                 :            : 
      52                 :            : 
      53                 :            : int
      54                 :     176000 : FCT(SIZE) (AsmScn_t *asmscn, TYPE(SIZE) num)
      55                 :            : {
      56         [ +  - ]:     176000 :   if (asmscn == NULL)
      57                 :            :     return -1;
      58                 :            : 
      59   [ -  +  -  - ]:     176000 :   if (asmscn->type == SHT_NOBITS && unlikely (num != 0))
      60                 :            :     {
      61                 :          0 :       __libasm_seterrno (ASM_E_TYPE);
      62                 :          0 :       return -1;
      63                 :            :     }
      64                 :            : 
      65         [ -  + ]:     176000 :   if (unlikely (asmscn->ctx->textp))
      66                 :            :     {
      67                 :            :       // XXX Needs to use backend specified pseudo-ops
      68                 :          0 :       if (SIZE == 8)
      69                 :            :         fprintf (asmscn->ctx->out.file, "\t.byte\t%" PRId8 "\n", (int8_t) num);
      70                 :          0 :       else if (SIZE == 16)
      71                 :            :         fprintf (asmscn->ctx->out.file, "\t.value\t%" PRId16 "\n",
      72                 :            :                  (int16_t) num);
      73                 :          0 :       else if (SIZE == 32)
      74                 :          0 :         fprintf (asmscn->ctx->out.file, "\t.long\t%" PRId32 "\n",
      75                 :            :                  (int32_t) num);
      76                 :            :       else
      77                 :            :         {
      78                 :            :           // XXX This is not necessary for 64-bit machines
      79                 :            :           bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA]
      80                 :            :                          == ELFDATA2LSB);
      81                 :            : 
      82                 :            :           fprintf (asmscn->ctx->out.file,
      83                 :            :                    "\t.long\t%" PRId32 "\n\t.long\t%" PRId32 "\n",
      84                 :            :                    (int32_t) (is_leb
      85                 :            :                               ? num % 0x100000000ll : num / 0x100000000ll),
      86                 :            :                    (int32_t) (is_leb
      87                 :            :                               ? num / 0x100000000ll : num % 0x100000000ll));
      88                 :            :         }
      89                 :            :     }
      90                 :            :   else
      91                 :            :     {
      92                 :            : #if SIZE > 8
      93                 :     176000 :       bool is_leb = (elf_getident (asmscn->ctx->out.elf, NULL)[EI_DATA]
      94                 :            :                      == ELFDATA2LSB);
      95                 :            : #endif
      96                 :     176000 :       TYPE(SIZE) var = num;
      97                 :            : 
      98                 :            :       /* Make sure we have enough room.  */
      99         [ -  + ]:     176000 :       if (__libasm_ensure_section_space (asmscn, SIZE / 8) != 0)
     100                 :          0 :         return -1;
     101                 :            : 
     102                 :            : #if SIZE > 8
     103         [ -  + ]:     176000 :       if ((BYTE_ORDER == LITTLE_ENDIAN && !is_leb)
     104                 :            :           || (BYTE_ORDER == BIG_ENDIAN && is_leb))
     105                 :          0 :         var = BSWAP(SIZE) (var);
     106                 :            : #endif
     107                 :            : 
     108                 :            :       /* Copy the variable value.  */
     109         [ -  + ]:     176000 :       if (likely (asmscn->type == SHT_NOBITS))
     110                 :          0 :         memcpy (&asmscn->content->data[asmscn->content->len], &var, SIZE / 8);
     111                 :            : 
     112                 :            :       /* Adjust the pointer in the data buffer.  */
     113                 :     176000 :       asmscn->content->len += SIZE / 8;
     114                 :            : 
     115                 :            :       /* Increment the offset in the (sub)section.  */
     116                 :     176000 :       asmscn->offset += SIZE / 8;
     117                 :            :     }
     118                 :            : 
     119                 :            :   return 0;
     120                 :            : }
     121                 :            : INTDEF(FCT(SIZE))

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