1 files changed, 76 insertions, 0 deletions
diff --git a/clang/tools/ccc/ccclib/HostInfo.py b/clang/tools/ccc/ccclib/HostInfo.py
new file mode 100644
index 00000000000..ccfd32b1372
--- /dev/null
+++ b/clang/tools/ccc/ccclib/HostInfo.py
@@ -0,0 +1,76 @@
+class HostInfo(object):
+    """HostInfo - Config information about a particular host which may
+    interact with driver behavior. This can be very different from the
+    target(s) of a particular driver invocation."""
+
+    def __init__(self):
+        pass
+
+    def getArchName(self):
+        abstract
+
+    def useDriverDriver(self):
+        abstract
+
+# Darwin
+
+class DarwinHostInfo(HostInfo):
+    def useDriverDriver(self):
+        return True
+
+class DarwinPPCHostInfo(DarwinHostInfo):
+    def getArchName(self):
+        return 'ppc'
+
+class DarwinPPC_64HostInfo(DarwinHostInfo):
+    def getArchName(self):
+        return 'ppc64'
+
+class DarwinX86HostInfo(DarwinHostInfo):
+    def getArchName(self):
+        return 'i386'
+
+class DarwinX86_64HostInfo(DarwinHostInfo):
+    def getArchName(self):
+        return 'x86_64'
+
+def getDarwinHostInfo(machine, bits):
+    if machine == 'i386':
+        if bits == '32':
+            return DarwinX86HostInfo()
+        if bits == '64':
+            return DarwinX86_64HostInfo()
+    elif machine == 'ppc':
+        if bits == '32':
+            return DarwinPPCHostInfo()
+        if bits == '64':
+            return DarwinPPC_64HostInfo()
+            
+    raise RuntimeError,'Unrecognized Darwin-i386 platform: %r:%r' % (machine, bits)
+
+# Unknown
+
+class UnknownHostInfo(HostInfo):
+    def getArchName(self):
+        raise RuntimeError,'getArchName() unsupported on unknown host.'
+
+    def useDriverDriver(self):
+        return False
+
+def getUnknownHostInfo(machine, bits):
+    return UnknownHostInfo()
+
+####
+
+kSystems = {
+    'darwin' : getDarwinHostInfo,
+    'unknown' : getUnknownHostInfo,
+    }
+
+def getHostInfo(driver, system, machine, bits):
+    handler = kSystems.get(system)
+    if handler:
+        return handler(machine, bits)
+
+    driver.warning('Unknown host %r, using generic host information.' % system)
+    return UnknownHostInfo()