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(cpu.empty())
  88                         cpu = native_arch.cpu;
  89                 if(system.empty())
  90                         system = native_arch.system;
  91                 if(!bits)
  92                 {
  93                         if(type==native_arch.type)
  94                                 bits = native_arch.bits;
  95                         else
  96                                 bits = 32;
  97                 }
  98
  99                 if(type!=native_arch.type || system!=native_arch.system)
 100                         cross_prefix = format("%s-%s", type, system);
 101                 else if(bits!=native_arch.bits)
 102                 {
 103                         build_info.cflags.push_back(format("-m%d", bits));
 104                         build_info.ldflags.push_back(format("-m%d", bits));
 105                 }
 106                 else
 107                         native = true;
 108
 109                 if(!cpu.empty())
 110                         build_info.cflags.push_back(format("-march=%s", cpu));
 111         }
 112         name = type;
 113         if(!cpu.empty())
 114                 name += format("-%s", cpu);
 115         name += format("-%d-%s", bits, system);
 116 }
 117
 118 void Architecture::set_tool(const string &t, const string &p)
 119 {
 120         tools[t] = p;
 121 }
 122
 123 void Architecture::set_cross_prefix(const string &p)
 124 {
 125         cross_prefix = p;
 126 }
 127
 128 std::string Architecture::get_tool(const string &t) const
 129 {
 130         StringMap::const_iterator i = tools.find(t);
 131         if(i!=tools.end())
 132         {
 133                 if(i->second[0]=='-')
 134                         return cross_prefix+i->second;
 135                 else
 136                         return i->second;
 137         }
 138
 139         const Architecture &native_arch = builder.get_native_arch();
 140         if(this!=&native_arch)
 141         {
 142                 if(!cross_prefix.empty())
 143                         return cross_prefix+"-"+native_arch.get_tool(t);
 144                 else
 145                         return native_arch.get_tool(t);
 146         }
 147         else
 148                 throw invalid_argument("Unknown tool");
 149 }
 150
 151 bool Architecture::match_name(const string &pattern) const
 152 {
 153         vector<string> parts = split(pattern, "-");
 154         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 155         {
 156                 string part = resolve_alias(*i);
 157                 if((part=="32" && bits==32) || (part=="64" && bits==64))
 158                         ;
 159                 else if(part!=type && part!=cpu && part!=system)
 160                         return false;
 161         }
 162         return true;
 163 }
 164
 165 string Architecture::resolve_alias(const string &part) const
 166 {
 167         for(unsigned j=0; aliases[j]; j+=2)
 168                 if(part==aliases[j])
 169                         return aliases[j+1];
 170
 171         return part;
 172 }
 173
 174 void Architecture::parse_specification(const string &spec)
 175 {
 176         vector<string> parts = split(spec, "-");
 177         for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 178         {
 179                 string part = resolve_alias(*i);
 180
 181                 bool ok = false;
 182
 183                 for(unsigned j=0; (!ok && types[j]); ++j)
 184                         if(part==types[j])
 185                         {
 186                                 if(!type.empty() && part!=type)
 187                                         throw invalid_argument("Conflicting type specification");
 188                                 type = part;
 189                                 ok = true;
 190                         }
 191
 192                 for(unsigned j=0; (!ok && cpus[j]); j+=2)
 193                         if(part==cpus[j])
 194                         {
 195                                 if(type.empty())
 196                                         type = cpus[j+1];
 197                                 else if(cpus[j+1]!=type)
 198                                         throw invalid_argument("Conflicting CPU specification");
 199                                 cpu = part;
 200                                 ok = true;
 201                         }
 202
 203                 for(unsigned j=0; (!ok && systems[j]); ++j)
 204                         if(part==systems[j])
 205                         {
 206                                 system = part;
 207                                 ok = true;
 208                         }
 209
 210                 if(!ok && (part=="32" || part=="64"))
 211                 {
 212                         bits = lexical_cast<unsigned>(part);
 213                         ok = true;
 214                 }
 215
 216                 if(!ok)
 217                         throw invalid_argument("Unrecognized part in arch specification: "+*i);
 218         }
 219 }
 220
 221
 222 Architecture::Loader::Loader(Architecture &a):
 223         arch(a)
 224 {
 225         add("prefix", &Architecture::cross_prefix);
 226         add("tool",   &Loader::tool);
 227 }
 228
 229 void Architecture::Loader::tool(const string &t, const string &p)
 230 {
 231         arch.tools[t] = p;
 232 }