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         bool negate = (pattern[0]=='!');
 128         vector<string> parts = split(pattern.substr(negate), "-");
 129         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 130         {
 131                 string part = resolve_alias(*i);
 132                 if((part=="32" && bits==32) || (part=="64" && bits==64))
 133                         ;
 134                 else if(part!=type && part!=cpu && part!=system)
 135                         return negate;
 136         }
 137         return !negate;
 138 }
 139
 140 string Architecture::resolve_alias(const string &part) const
 141 {
 142         for(unsigned j=0; aliases[j]; j+=2)
 143                 if(part==aliases[j])
 144                         return aliases[j+1];
 145
 146         return part;
 147 }
 148
 149 void Architecture::parse_specification(const string &spec)
 150 {
 151         vector<string> parts = split(spec, "-");
 152         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 153         {
 154                 string part = resolve_alias(*i);
 155
 156                 bool ok = false;
 157
 158                 for(unsigned j=0; (!ok && types[j]); ++j)
 159                         if(part==types[j])
 160                         {
 161                                 if(!type.empty() && part!=type)
 162                                         throw invalid_argument("Conflicting type specification");
 163                                 type = part;
 164                                 ok = true;
 165                         }
 166
 167                 for(unsigned j=0; (!ok && cpus[j]); j+=2)
 168                         if(part==cpus[j])
 169                         {
 170                                 if(type.empty())
 171                                         type = cpus[j+1];
 172                                 else if(cpus[j+1]!=type)
 173                                         throw invalid_argument("Conflicting CPU specification");
 174                                 cpu = part;
 175                                 ok = true;
 176                         }
 177
 178                 for(unsigned j=0; (!ok && systems[j]); ++j)
 179                         if(part==systems[j])
 180                         {
 181                                 system = part;
 182                                 ok = true;
 183                         }
 184
 185                 if(!ok && (part=="32" || part=="64"))
 186                 {
 187                         bits = lexical_cast<unsigned>(part);
 188                         ok = true;
 189                 }
 190
 191                 if(!ok)
 192                         throw invalid_argument("Unrecognized part in arch specification: "+*i);
 193         }
 194 }
 195
 196
 197 Architecture::Loader::Loader(Architecture &a):
 198         DataFile::ObjectLoader<Architecture>(a)
 199 {
 200         add("prefix", &Architecture::cross_prefix);
 201 }