gold/target-select.cc

   1 // target-select.cc -- select a target for an object file
   2
   3 #include "gold.h"
   4
   5 #include "elfcpp.h"
   6 #include "target-select.h"
   7
   8 namespace
   9 {
  10
  11 // The start of the list of target selectors.
  12
  13 gold::Target_selector* target_selectors;
  14
  15 } // End anonymous namespace.
  16
  17 namespace gold
  18 {
  19
  20 // Construct a Target_selector, which means adding it to the linked
  21 // list.  This runs at global constructor time, so we want it to be
  22 // fast.
  23
  24 Target_selector::Target_selector(int machine, int size, bool big_endian)
  25   : machine_(machine), size_(size), big_endian_(big_endian)
  26 {
  27   this->next_ = target_selectors;
  28   target_selectors = this;
  29 }
  30
  31 // Find the target for an ELF file.
  32
  33 extern Target*
  34 select_target(int machine, int size, bool big_endian, int osabi,
  35               int abiversion)
  36 {
  37   for (Target_selector* p = target_selectors; p != NULL; p = p->next())
  38     {
  39       int pmach = p->machine();
  40       if ((pmach == machine || pmach == elfcpp::EM_NONE)
  41           && p->size() == size
  42           && p->big_endian() ? big_endian : !big_endian)
  43         {
  44           Target* ret = p->recognize(machine, osabi, abiversion);
  45           if (ret != NULL)
  46             return ret;
  47         }
  48     }
  49   return NULL;
  50 }
  51
  52 } // End namespace gold.