1 files changed, 24 insertions, 0 deletions
diff --git a/lib/ruby_vm/rjit/branch_stub.rb b/lib/ruby_vm/rjit/branch_stub.rb
new file mode 100644
index 0000000000..b9fe78b744
--- /dev/null
+++ b/lib/ruby_vm/rjit/branch_stub.rb
@@ -0,0 +1,24 @@
+module RubyVM::RJIT
+  # Branch shapes
+  Next0   = :Next0   # target0 is a fallthrough
+  Next1   = :Next1   # target1 is a fallthrough
+  Default = :Default # neither targets is a fallthrough
+
+  class BranchStub < Struct.new(
+    :iseq,       # @param [RubyVM::RJIT::CPointer::Struct_rb_iseq_struct] Branch target ISEQ
+    :shape,      # @param [Symbol] Next0, Next1, or Default
+    :target0,    # @param [RubyVM::RJIT::BranchTarget] First branch target
+    :target1,    # @param [RubyVM::RJIT::BranchTarget,NilClass] Second branch target (optional)
+    :compile,    # @param [Proc] A callback to (re-)generate this branch stub
+    :start_addr, # @param [Integer] Stub source start address to be re-generated
+    :end_addr,   # @param [Integer] Stub source end address to be re-generated
+  )
+  end
+
+  class BranchTarget < Struct.new(
+    :pc,
+    :ctx,
+    :address,
+  )
+  end
+end