Sync PlatformFreeBSD::GetSupportedArchitectureAtIndex with PlatformLinux

[ted]

LGTM

lldb/trunk/source/Plugins/Platform/FreeBSD/PlatformFreeBSD.cpp

if (module_sp)
         module_sp->SetPlatformFileSpec(module_spec.GetFileSpec());
     return error;
 }
 
 
 bool
 PlatformFreeBSD::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
 {
-    // From macosx;s plugin code. For FreeBSD we may want to support more archs.
+    if (IsHost())
+    {
+        ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
+        if (hostArch.GetTriple().isOSFreeBSD())
+        {
             if (idx == 0)
             {
-        arch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
+                arch = hostArch;
                 return arch.IsValid();
             }
             else if (idx == 1)
             {
-        ArchSpec platform_arch(HostInfo::GetArchitecture(HostInfo::eArchKindDefault));
-        ArchSpec platform_arch64(HostInfo::GetArchitecture(HostInfo::eArchKind64));
-        if (platform_arch.IsExactMatch(platform_arch64))
-        {
-            // This freebsd platform supports both 32 and 64 bit. Since we already
-            // returned the 64 bit arch for idx == 0, return the 32 bit arch
-            // for idx == 1
+                // If the default host architecture is 64-bit, look for a 32-bit variant
+                if (hostArch.IsValid() && hostArch.GetTriple().isArch64Bit())
+                {
                     arch = HostInfo::GetArchitecture(HostInfo::eArchKind32);
                     return arch.IsValid();
                 }
             }
+        }
+    }
+    else
+    {
+        if (m_remote_platform_sp)
+            return m_remote_platform_sp->GetSupportedArchitectureAtIndex(idx, arch);
+
+        llvm::Triple triple;
+        // Set the OS to FreeBSD
+        triple.setOS(llvm::Triple::FreeBSD);
+        // Set the architecture
+        switch (idx)
+        {
+            case 0: triple.setArchName("x86_64"); break;
+            case 1: triple.setArchName("i386"); break;
+            case 2: triple.setArchName("aarch64"); break;
+            case 3: triple.setArchName("arm"); break;
+            case 4: triple.setArchName("mips64"); break;
+            case 5: triple.setArchName("mips"); break;
+            case 6: triple.setArchName("ppc64"); break;
+            case 7: triple.setArchName("ppc"); break;
+            default: return false;
+        }
+        // Leave the vendor as "llvm::Triple:UnknownVendor" and don't specify the vendor by
+        // calling triple.SetVendorName("unknown") so that it is a "unspecified unknown".
+        // This means when someone calls triple.GetVendorName() it will return an empty string
+        // which indicates that the vendor can be set when two architectures are merged
+
+        // Now set the triple into "arch" and return true
+        arch.SetTriple(triple);
+        return true;
+    }
     return false;
 }
 
 void
 PlatformFreeBSD::GetStatus (Stream &strm)
 {
 #ifndef LLDB_DISABLE_POSIX
     struct utsname un;