1 files changed, 78 insertions, 0 deletions
diff --git a/sys/fuchsia/layout/fidl_mappings.go b/sys/fuchsia/layout/fidl_mappings.go
new file mode 100644
index 000000000..dd5e3c678
--- /dev/null
+++ b/sys/fuchsia/layout/fidl_mappings.go
@@ -0,0 +1,78 @@
+// Copyright 2019 syzkaller project authors. All rights reserved.
+// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+package layout
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
+
+// layer indicates at which layer a FidlLibrary lives in the Fuchsia build
+// system.
+type layer int
+
+const (
+	_ layer = iota
+	zircon
+	garnet
+)
+
+// FidlLibrary describes a FIDL library. It captures required details such as
+// build location, header generation, etc.
+type FidlLibrary struct {
+	layer layer
+
+	// FqName stores the fully-qualified name of the library in parts, e.g.
+	// the `fuchsia.mem` library is `fuchsia`, `mem`.
+	FqName []string
+}
+
+// AllFidlLibraries lists all FIDL libraries.
+var AllFidlLibraries = []FidlLibrary{
+	{zircon, []string{"fuchsia", "mem"}},
+	{zircon, []string{"fuchsia", "cobalt"}},
+	{zircon, []string{"fuchsia", "ldsvc"}},
+	{zircon, []string{"fuchsia", "process"}},
+	{zircon, []string{"fuchsia", "io"}},
+	{zircon, []string{"fuchsia", "net"}},
+	{zircon, []string{"fuchsia", "net", "stack"}},
+	{zircon, []string{"fuchsia", "hardware", "ethernet"}},
+	{garnet, []string{"fuchsia", "devicesettings"}},
+	{garnet, []string{"fuchsia", "timezone"}},
+	{garnet, []string{"fuchsia", "power"}},
+	{garnet, []string{"fuchsia", "scpi"}},
+}
+
+func (fidlLib FidlLibrary) dirName() string {
+	switch fidlLib.layer {
+	case zircon:
+		return strings.Join(fidlLib.FqName, "-")
+	case garnet:
+		return strings.Join(fidlLib.FqName, ".")
+	default:
+		panic(fmt.Sprintf("unknown layer %v", fidlLib.layer))
+	}
+}
+
+// PathToJSONIr provides the path to the JSON IR, relative to the out/<arch>
+// directory.
+func (fidlLib FidlLibrary) PathToJSONIr() string {
+	return filepath.Join(
+		fidlLib.PathToCompiledDir(),
+		fmt.Sprintf("%s.fidl.json", fidlLib.dirName()))
+}
+
+// PathToCompiledDir provides the path to compiled headers, relative to the
+// out/<arch> directory.
+func (fidlLib FidlLibrary) PathToCompiledDir() string {
+	switch fidlLib.layer {
+	case zircon:
+		return filepath.Join("fidling", "gen", "zircon", "public", "fidl", fidlLib.dirName())
+	case garnet:
+		return filepath.Join("fidling", "gen", "sdk", "fidl", fidlLib.dirName())
+	default:
+		panic(fmt.Sprintf("unknown layer %v", fidlLib.layer))
+	}
+}