[Lldb-commits] [PATCH] Change Linux Platform to support non-host Linux architectures

[Ted Woodward]

Added mips.


http://reviews.llvm.org/D8709

Files:
  source/Plugins/Platform/Linux/PlatformLinux.cpp

Index: source/Plugins/Platform/Linux/PlatformLinux.cpp
===================================================================
--- source/Plugins/Platform/Linux/PlatformLinux.cpp
+++ source/Plugins/Platform/Linux/PlatformLinux.cpp
@@ -481,20 +481,49 @@
 bool
 PlatformLinux::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
 {
-    if (idx == 0)
+    if (IsHost())
     {
-        arch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
-        return arch.IsValid();
+        if (idx == 0)
+        {
+            arch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
+            return arch.IsValid();
+        }
+        else if (idx == 1)
+        {
+            // If the default host architecture is 64-bit, look for a 32-bit variant
+            ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
+            if (hostArch.IsValid() && hostArch.GetTriple().isArch64Bit())
+            {
+                arch = HostInfo::GetArchitecture(HostInfo::eArchKind32);
+                return arch.IsValid();
+            }
+        }
     }
-    else if (idx == 1)
+    else
     {
-        // If the default host architecture is 64-bit, look for a 32-bit variant
-        ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
-        if (hostArch.IsValid() && hostArch.GetTriple().isArch64Bit())
+        llvm::Triple triple;
+        // Set the OS to linux
+        triple.setOS(llvm::Triple::Linux);
+        // Set the architecture
+        switch (idx)
         {
-            arch = HostInfo::GetArchitecture(HostInfo::eArchKind32);
-            return arch.IsValid();
+            case 0: triple.setArchName("x86_64"); break;
+            case 1: triple.setArchName("i386"); break;
+            case 2: triple.setArchName("arm"); break;
+            case 3: triple.setArchName("aarch64"); break;
+            case 4: triple.setArchName("mips64"); break;
+            case 5: triple.setArchName("hexagon"); break;
+            case 6: triple.setArchName("mips"); 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;
 }

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