source/architecture.cpp

   1 #include <limits>
   2 #ifndef WIN32
   3 #include <sys/utsname.h>
   4 #endif
   5 #include <msp/strings/format.h>
   6 #include <msp/strings/utils.h>
   7 #include "architecture.h"
   8 #include "builder.h"
   9
  10 using namespace std;
  11 using namespace Msp;
  12
  13 namespace {
  14
  15 const char *types[] =
  16 {
  17         "pc",
  18         "arm",
  19         0
  20 };
  21
  22 const char *cpus[] =
  23 {
  24         "i386",       "pc",
  25         "i486",       "pc",
  26         "pentium",    "pc",
  27         "pentiumpro", "pc",
  28         "pentium2",   "pc",
  29         "pentium3",   "pc",
  30         "pentium4",   "pc",
  31         "core2",      "pc",
  32         "k6",         "pc",
  33         "athlon",     "pc",
  34         "athlonxp",   "pc",
  35         "athlon64",   "pc",
  36         "armv5",      "arm",
  37         0
  38 };
  39
  40 const char *systems[] =
  41 {
  42         "linux",
  43         "freebsd",
  44         "windows",
  45         0
  46 };
  47
  48 const char *aliases[] =
  49 {
  50         "i586",  "pentium",
  51         "i686",  "pentiumpro",
  52         "x86_64", "athlon64",
  53         "win32", "windows",
  54         0
  55 };
  56
  57 }
  58
  59 Architecture::Architecture(Builder &b, const string &spec):
  60         builder(b),
  61         bits(0),
  62         native(false)
  63 {
  64         if(spec.empty())
  65         {
  66 #ifdef WIN32
  67                 system = "windows";
  68 #else
  69                 utsname un;
  70                 if(uname(&un)==0)
  71                 {
  72                         system = tolower(un.sysname);
  73                         parse_specification(tolower(un.machine));
  74                         // We really only want to set type for the default arch
  75                         cpu.clear();
  76                 }
  77 #endif
  78                 bits = sizeof(void *)*numeric_limits<unsigned char>::digits;
  79                 native = true;
  80         }
  81         else
  82         {
  83                 parse_specification(spec);
  84                 const Architecture &native_arch = builder.get_native_arch();
  85                 if(type.empty())
  86                         type = native_arch.type;
  87                 if(system.empty())
  88                         system = native_arch.system;
  89                 if(!bits)
  90                 {
  91                         if(type==native_arch.type)
  92                                 bits = native_arch.bits;
  93                         else
  94                                 bits = 32;
  95                 }
  96
  97                 if(type!=native_arch.type || system!=native_arch.system)
  98                         cross_prefix = format("%s-%s", type, system);
  99                 else if(bits==native_arch.bits)
 100                         native = true;
 101         }
 102         name = type;
 103         if(!cpu.empty())
 104                 name += format("-%s", cpu);
 105         name += format("-%d-%s", bits, system);
 106
 107         if(system=="windows")
 108         {
 109                 sharedlib_patterns.push_back(Pattern("%.dll"));
 110                 sharedlib_patterns.push_back(Pattern("lib%.dll"));
 111                 /* XXX Hack: Consider import libraries (*.dll.a) as dynamic libraries,
 112                 even though technically they are linked statically. */
 113                 sharedlib_patterns.push_back(Pattern("lib%.dll.a"));
 114                 staticlib_patterns.push_back(Pattern("lib%.a"));
 115                 executable_patterns.push_back(Pattern("%.exe"));
 116         }
 117         else
 118         {
 119                 sharedlib_patterns.push_back(Pattern("lib%.so"));
 120                 staticlib_patterns.push_back(Pattern("lib%.a"));
 121                 executable_patterns.push_back(Pattern("%"));
 122         }
 123 }
 124
 125 bool Architecture::match_name(const string &pattern) const
 126 {
 127         vector<string> parts = split(pattern, "-");
 128         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 129         {
 130                 string part = resolve_alias(*i);
 131                 if((part=="32" && bits==32) || (part=="64" && bits==64))
 132                         ;
 133                 else if(part!=type && part!=cpu && part!=system)
 134                         return false;
 135         }
 136         return true;
 137 }
 138
 139 string Architecture::resolve_alias(const string &part) const
 140 {
 141         for(unsigned j=0; aliases[j]; j+=2)
 142                 if(part==aliases[j])
 143                         return aliases[j+1];
 144
 145         return part;
 146 }
 147
 148 void Architecture::parse_specification(const string &spec)
 149 {
 150         vector<string> parts = split(spec, "-");
 151         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 152         {
 153                 string part = resolve_alias(*i);
 154
 155                 bool ok = false;
 156
 157                 for(unsigned j=0; (!ok && types[j]); ++j)
 158                         if(part==types[j])
 159                         {
 160                                 if(!type.empty() && part!=type)
 161                                         throw invalid_argument("Conflicting type specification");
 162                                 type = part;
 163                                 ok = true;
 164                         }
 165
 166                 for(unsigned j=0; (!ok && cpus[j]); j+=2)
 167                         if(part==cpus[j])
 168                         {
 169                                 if(type.empty())
 170                                         type = cpus[j+1];
 171                                 else if(cpus[j+1]!=type)
 172                                         throw invalid_argument("Conflicting CPU specification");
 173                                 cpu = part;
 174                                 ok = true;
 175                         }
 176
 177                 for(unsigned j=0; (!ok && systems[j]); ++j)
 178                         if(part==systems[j])
 179                         {
 180                                 system = part;
 181                                 ok = true;
 182                         }
 183
 184                 if(!ok && (part=="32" || part=="64"))
 185                 {
 186                         bits = lexical_cast<unsigned>(part);
 187                         ok = true;
 188                 }
 189
 190                 if(!ok)
 191                         throw invalid_argument("Unrecognized part in arch specification: "+*i);
 192         }
 193 }
 194
 195
 196 Architecture::Loader::Loader(Architecture &a):
 197         DataFile::ObjectLoader<Architecture>(a)
 198 {
 199         add("prefix", &Architecture::cross_prefix);
 200 }