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                 staticlib_patterns.push_back(Pattern("lib%.a"));
 112                 staticlib_patterns.push_back(Pattern("lib%.dll.a"));
 113                 executable_patterns.push_back(Pattern("%.exe"));
 114         }
 115         else
 116         {
 117                 sharedlib_patterns.push_back(Pattern("lib%.so"));
 118                 staticlib_patterns.push_back(Pattern("lib%.a"));
 119                 executable_patterns.push_back(Pattern("%"));
 120         }
 121 }
 122
 123 bool Architecture::match_name(const string &pattern) const
 124 {
 125         vector<string> parts = split(pattern, "-");
 126         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 127         {
 128                 string part = resolve_alias(*i);
 129                 if((part=="32" && bits==32) || (part=="64" && bits==64))
 130                         ;
 131                 else if(part!=type && part!=cpu && part!=system)
 132                         return false;
 133         }
 134         return true;
 135 }
 136
 137 string Architecture::resolve_alias(const string &part) const
 138 {
 139         for(unsigned j=0; aliases[j]; j+=2)
 140                 if(part==aliases[j])
 141                         return aliases[j+1];
 142
 143         return part;
 144 }
 145
 146 void Architecture::parse_specification(const string &spec)
 147 {
 148         vector<string> parts = split(spec, "-");
 149         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 150         {
 151                 string part = resolve_alias(*i);
 152
 153                 bool ok = false;
 154
 155                 for(unsigned j=0; (!ok && types[j]); ++j)
 156                         if(part==types[j])
 157                         {
 158                                 if(!type.empty() && part!=type)
 159                                         throw invalid_argument("Conflicting type specification");
 160                                 type = part;
 161                                 ok = true;
 162                         }
 163
 164                 for(unsigned j=0; (!ok && cpus[j]); j+=2)
 165                         if(part==cpus[j])
 166                         {
 167                                 if(type.empty())
 168                                         type = cpus[j+1];
 169                                 else if(cpus[j+1]!=type)
 170                                         throw invalid_argument("Conflicting CPU specification");
 171                                 cpu = part;
 172                                 ok = true;
 173                         }
 174
 175                 for(unsigned j=0; (!ok && systems[j]); ++j)
 176                         if(part==systems[j])
 177                         {
 178                                 system = part;
 179                                 ok = true;
 180                         }
 181
 182                 if(!ok && (part=="32" || part=="64"))
 183                 {
 184                         bits = lexical_cast<unsigned>(part);
 185                         ok = true;
 186                 }
 187
 188                 if(!ok)
 189                         throw invalid_argument("Unrecognized part in arch specification: "+*i);
 190         }
 191 }
 192
 193
 194 Architecture::Loader::Loader(Architecture &a):
 195         DataFile::ObjectLoader<Architecture>(a)
 196 {
 197         add("prefix", &Architecture::cross_prefix);
 198 }