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diff --git a/gcc-4.9/gcc/go/gofrontend/runtime.def b/gcc-4.9/gcc/go/gofrontend/runtime.def
new file mode 100644
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+++ b/gcc-4.9/gcc/go/gofrontend/runtime.def
@@ -0,0 +1,374 @@
+// runtime.def -- runtime functions called by generated code.  -*- C++ -*-
+
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Definitions for the Go runtime functions.
+
+// Parameter type helper macros.
+#define ABFT6(T1, T2, T3, T4, T5, T6) \
+  { RFT_ ## T1, RFT_ ## T2, RFT_ ## T3, RFT_ ## T4, RFT_ ## T5, RFT_ ## T6 }
+#define P0()			ABFT6(VOID, VOID, VOID, VOID, VOID, VOID)
+#define P1(T)			ABFT6(T, VOID, VOID, VOID, VOID, VOID)
+#define P2(T1, T2)		ABFT6(T1, T2, VOID, VOID, VOID, VOID)
+#define P3(T1, T2, T3)		ABFT6(T1, T2, T3, VOID, VOID, VOID)
+#define P4(T1, T2, T3, T4)	ABFT6(T1, T2, T3, T4, VOID, VOID)
+#define P5(T1, T2, T3, T4, T5)	ABFT6(T1, T2, T3, T4, T5, VOID)
+#define P6(T1,T2,T3,T4,T5,T6)	ABFT6(T1, T2, T3, T4, T5, T6)
+
+// Result type helper macros.
+#define ABFT2(T1, T2) { RFT_ ## T1, RFT_ ## T2 }
+#define R0()			ABFT2(VOID, VOID)
+#define R1(T)			ABFT2(T, VOID)
+#define R2(T1, T2)		ABFT2(T1, T2)
+
+// Define all the Go runtime functions.  The first parameter is the
+// enum code used to refer to the function.  The second parameter is
+// the name.  The third is the parameter types and the fourth is the
+// result types.
+
+// The standard C memcmp function, used for struct comparisons.
+DEF_GO_RUNTIME(MEMCMP, "__go_memcmp", P3(POINTER, POINTER, UINTPTR), R1(INT))
+
+// Range over a string, returning the next index.
+DEF_GO_RUNTIME(STRINGITER, "runtime.stringiter", P2(STRING, INT), R1(INT))
+
+// Range over a string, returning the next index and character.
+DEF_GO_RUNTIME(STRINGITER2, "runtime.stringiter2", P2(STRING, INT),
+	       R2(INT, RUNE))
+
+// Concatenate two strings.
+DEF_GO_RUNTIME(STRING_PLUS, "__go_string_plus", P2(STRING, STRING), R1(STRING))
+
+// Compare two strings.
+DEF_GO_RUNTIME(STRCMP, "__go_strcmp", P2(STRING, STRING), R1(INT))
+
+// Take a slice of a string.
+DEF_GO_RUNTIME(STRING_SLICE, "__go_string_slice", P3(STRING, INT, INT),
+	       R1(STRING))
+
+// Convert an integer to a string.
+DEF_GO_RUNTIME(INT_TO_STRING, "__go_int_to_string", P1(INT), R1(STRING))
+
+// Convert a byte array to a string.
+DEF_GO_RUNTIME(BYTE_ARRAY_TO_STRING, "__go_byte_array_to_string",
+	       P2(POINTER, INT), R1(STRING))
+
+// Convert an int array to a string.
+DEF_GO_RUNTIME(INT_ARRAY_TO_STRING, "__go_int_array_to_string",
+	       P2(POINTER, INT), R1(STRING))
+
+// Convert a string to a byte slice.
+DEF_GO_RUNTIME(STRING_TO_BYTE_ARRAY, "__go_string_to_byte_array",
+	       P1(STRING), R1(SLICE))
+
+// Convert a string to an int slice.
+DEF_GO_RUNTIME(STRING_TO_INT_ARRAY, "__go_string_to_int_array",
+	       P1(STRING), R1(SLICE))
+
+
+// Complex division.
+DEF_GO_RUNTIME(COMPLEX64_DIV, "__go_complex64_div",
+	       P2(COMPLEX64, COMPLEX64), R1(COMPLEX64))
+DEF_GO_RUNTIME(COMPLEX128_DIV, "__go_complex128_div",
+	       P2(COMPLEX128, COMPLEX128), R1(COMPLEX128))
+
+// Make a slice.
+DEF_GO_RUNTIME(MAKESLICE1, "__go_make_slice1", P2(TYPE, UINTPTR), R1(SLICE))
+DEF_GO_RUNTIME(MAKESLICE2, "__go_make_slice2", P3(TYPE, UINTPTR, UINTPTR),
+	       R1(SLICE))
+DEF_GO_RUNTIME(MAKESLICE1BIG, "__go_make_slice1_big", P2(TYPE, UINT64),
+	       R1(SLICE))
+DEF_GO_RUNTIME(MAKESLICE2BIG, "__go_make_slice2_big", P3(TYPE, UINT64, UINT64),
+	       R1(SLICE))
+
+
+// Make a map.
+DEF_GO_RUNTIME(MAKEMAP, "__go_new_map", P2(MAPDESCRIPTOR, UINTPTR), R1(MAP))
+DEF_GO_RUNTIME(MAKEMAPBIG, "__go_new_map_big", P2(MAPDESCRIPTOR, UINT64),
+	       R1(MAP))
+
+// Build a map from a composite literal.
+DEF_GO_RUNTIME(CONSTRUCT_MAP, "__go_construct_map",
+	       P6(POINTER, UINTPTR, UINTPTR, UINTPTR, UINTPTR, POINTER),
+	       R1(MAP))
+
+// Get the length of a map (the number of entries).
+DEF_GO_RUNTIME(MAP_LEN, "__go_map_len", P1(MAP), R1(INT))
+
+// Look up a key in a map.
+DEF_GO_RUNTIME(MAP_INDEX, "__go_map_index", P3(MAP, POINTER, BOOL),
+	       R1(POINTER))
+
+// Look up a key in a map returning whether it is present.
+DEF_GO_RUNTIME(MAPACCESS2, "runtime.mapaccess2",
+	       P4(TYPE, MAP, POINTER, POINTER), R1(BOOL))
+
+// Tuple assignment to a map element.
+DEF_GO_RUNTIME(MAPASSIGN2, "runtime.mapassign2",
+	       P4(MAP, POINTER, POINTER, BOOL), R0())
+
+// Delete a key from a map.
+DEF_GO_RUNTIME(MAPDELETE, "runtime.mapdelete", P2(MAP, POINTER), R0())
+
+// Begin a range over a map.
+DEF_GO_RUNTIME(MAPITERINIT, "runtime.mapiterinit", P2(MAP, MAPITER), R0())
+
+// Range over a map, returning the next key.
+DEF_GO_RUNTIME(MAPITER1, "runtime.mapiter1", P2(MAPITER, POINTER), R0())
+
+// Range over a map, returning the next key and value.
+DEF_GO_RUNTIME(MAPITER2, "runtime.mapiter2", P3(MAPITER, POINTER, POINTER),
+	       R0())
+
+// Range over a map, moving to the next map entry.
+DEF_GO_RUNTIME(MAPITERNEXT, "runtime.mapiternext", P1(MAPITER), R0())
+
+
+// Make a channel.
+DEF_GO_RUNTIME(MAKECHAN, "__go_new_channel", P2(TYPE, UINTPTR), R1(CHAN))
+DEF_GO_RUNTIME(MAKECHANBIG, "__go_new_channel_big", P2(TYPE, UINT64), R1(CHAN))
+
+// Get the length of a channel (the number of unread values).
+DEF_GO_RUNTIME(CHAN_LEN, "__go_chan_len", P1(CHAN), R1(INT))
+
+// Get the capacity of a channel (the size of the buffer).
+DEF_GO_RUNTIME(CHAN_CAP, "__go_chan_cap", P1(CHAN), R1(INT))
+
+// Send a small value on a channel.
+DEF_GO_RUNTIME(SEND_SMALL, "__go_send_small", P3(TYPE, CHAN, UINT64), R0())
+
+// Send a big value on a channel.
+DEF_GO_RUNTIME(SEND_BIG, "__go_send_big", P3(TYPE, CHAN, POINTER), R0())
+
+// Receive a small value from a channel.
+DEF_GO_RUNTIME(RECEIVE_SMALL, "__go_receive_small", P2(TYPE, CHAN), R1(UINT64))
+
+// Receive a big value from a channel.
+DEF_GO_RUNTIME(RECEIVE_BIG, "__go_receive_big", P3(TYPE, CHAN, POINTER), R0())
+
+// Receive a value from a channel returning whether it is closed.
+DEF_GO_RUNTIME(CHANRECV2, "runtime.chanrecv2", P3(TYPE, CHAN, POINTER),
+	       R1(BOOL))
+
+
+// Start building a select statement.
+DEF_GO_RUNTIME(NEWSELECT, "runtime.newselect", P1(INT32), R1(POINTER))
+
+// Add a default clause to a select statement.
+DEF_GO_RUNTIME(SELECTDEFAULT, "runtime.selectdefault",
+	       P2(POINTER, INT32), R0())
+
+// Add a send clause to a select statement.
+DEF_GO_RUNTIME(SELECTSEND, "runtime.selectsend",
+	       P4(POINTER, CHAN, POINTER, INT32), R0())
+
+// Add a receive clause to a select statement, for a clause which does
+// not check whether the channel is closed.
+DEF_GO_RUNTIME(SELECTRECV, "runtime.selectrecv",
+	       P4(POINTER, CHAN, POINTER, INT32), R0())
+
+// Add a receive clause to a select statement, for a clause which does
+// check whether the channel is closed.
+DEF_GO_RUNTIME(SELECTRECV2, "runtime.selectrecv2",
+	       P5(POINTER, CHAN, POINTER, BOOLPTR, INT32), R0())
+
+// Run a select, returning the index of the selected clause.
+DEF_GO_RUNTIME(SELECTGO, "runtime.selectgo", P1(POINTER), R1(INT32))
+
+
+// Panic.
+DEF_GO_RUNTIME(PANIC, "__go_panic", P1(EFACE), R0())
+
+// Recover.
+DEF_GO_RUNTIME(RECOVER, "__go_recover", P0(), R1(EFACE))
+
+// Recover when called directly from defer.
+DEF_GO_RUNTIME(DEFERRED_RECOVER, "__go_deferred_recover", P0(), R1(EFACE))
+
+// Decide whether this function can call recover.
+DEF_GO_RUNTIME(CAN_RECOVER, "__go_can_recover", P1(POINTER), R1(BOOL))
+
+// Get the return address of the function.
+DEF_GO_RUNTIME(RETURN_ADDRESS, "__go_return_address", P1(INT), R1(POINTER))
+
+// Set the return address for defer in a defer thunk.
+DEF_GO_RUNTIME(SET_DEFER_RETADDR, "__go_set_defer_retaddr", P1(POINTER),
+	       R1(BOOL))
+
+// Check for a deferred function in an exception handler.
+DEF_GO_RUNTIME(CHECK_DEFER, "__go_check_defer", P1(BOOLPTR), R0())
+
+// Run deferred functions.
+DEF_GO_RUNTIME(UNDEFER, "__go_undefer", P1(BOOLPTR), R0())
+
+// Panic with a runtime error.
+DEF_GO_RUNTIME(RUNTIME_ERROR, "__go_runtime_error", P1(INT32), R0())
+
+
+// Close.
+DEF_GO_RUNTIME(CLOSE, "__go_close", P1(CHAN), R0())
+
+
+// Copy.
+DEF_GO_RUNTIME(COPY, "__go_copy", P3(POINTER, POINTER, UINTPTR), R0())
+
+// Append.
+DEF_GO_RUNTIME(APPEND, "__go_append", P4(SLICE, POINTER, UINTPTR, UINTPTR),
+	       R1(SLICE))
+
+
+// Register roots (global variables) for the garbage collector.
+DEF_GO_RUNTIME(REGISTER_GC_ROOTS, "__go_register_gc_roots", P1(POINTER), R0())
+
+
+// Allocate memory.
+DEF_GO_RUNTIME(NEW, "__go_new", P1(UINTPTR), R1(POINTER))
+
+// Allocate memory which can not contain pointers.
+DEF_GO_RUNTIME(NEW_NOPOINTERS, "__go_new_nopointers", P1(UINTPTR), R1(POINTER))
+
+
+// Start a new goroutine.
+DEF_GO_RUNTIME(GO, "__go_go", P2(FUNC_PTR, POINTER), R0())
+
+
+// Defer a function.
+DEF_GO_RUNTIME(DEFER, "__go_defer", P3(BOOLPTR, FUNC_PTR, POINTER), R0())
+
+
+// Convert an empty interface to an empty interface, returning ok.
+DEF_GO_RUNTIME(IFACEE2E2, "runtime.ifaceE2E2", P1(EFACE), R2(EFACE, BOOL))
+
+// Convert a non-empty interface to an empty interface, returning ok.
+DEF_GO_RUNTIME(IFACEI2E2, "runtime.ifaceI2E2", P1(IFACE), R2(EFACE, BOOL))
+
+// Convert an empty interface to a non-empty interface, returning ok.
+DEF_GO_RUNTIME(IFACEE2I2, "runtime.ifaceE2I2", P2(TYPE, EFACE),
+	       R2(IFACE, BOOL))
+
+// Convert a non-empty interface to a non-empty interface, returning ok.
+DEF_GO_RUNTIME(IFACEI2I2, "runtime.ifaceI2I2", P2(TYPE, IFACE),
+	       R2(IFACE, BOOL))
+
+// Convert an empty interface to a pointer type, returning ok.
+DEF_GO_RUNTIME(IFACEE2T2P, "runtime.ifaceE2T2P", P2(TYPE, EFACE),
+	       R2(POINTER, BOOL))
+
+// Convert a non-empty interface to a pointer type, return ok.
+DEF_GO_RUNTIME(IFACEI2T2P, "runtime.ifaceI2T2P", P2(TYPE, IFACE),
+	       R2(POINTER, BOOL))
+
+// Convert an empty interface to a non-pointer type, returning ok.
+DEF_GO_RUNTIME(IFACEE2T2, "runtime.ifaceE2T2", P3(TYPE, EFACE, POINTER),
+	       R1(BOOL))
+
+// Convert a non-empty interface to a non-pointer type, returning ok.
+DEF_GO_RUNTIME(IFACEI2T2, "runtime.ifaceI2T2", P3(TYPE, IFACE, POINTER),
+	       R1(BOOL))
+
+// A type assertion from one interface type to another.  This is
+// used for a type assertion.
+DEF_GO_RUNTIME(ASSERT_INTERFACE, "__go_assert_interface", P2(TYPE, TYPE), R0())
+
+// Convert one interface type to another.  This is used for an
+// assignment.
+DEF_GO_RUNTIME(CONVERT_INTERFACE, "__go_convert_interface", P2(TYPE, TYPE),
+	       R1(POINTER))
+
+// Check whether an interface type may be converted to a
+// non-interface type.
+DEF_GO_RUNTIME(CHECK_INTERFACE_TYPE, "__go_check_interface_type",
+	       P3(TYPE, TYPE, TYPE), R0())
+
+// Return whether we can convert an interface type to a type.
+DEF_GO_RUNTIME(IFACEI2TP, "runtime.ifaceI2Tp", P2(TYPE, TYPE), R1(BOOL))
+
+// Get the type descriptor of an empty interface.
+DEF_GO_RUNTIME(EFACETYPE, "runtime.efacetype", P1(EFACE), R1(TYPE))
+
+// Get the type descriptor of a non-empty interface.
+DEF_GO_RUNTIME(IFACETYPE, "runtime.ifacetype", P1(IFACE), R1(TYPE))
+
+
+// Compare two type descriptors for equality.
+DEF_GO_RUNTIME(IFACETYPEEQ, "runtime.ifacetypeeq", P2(TYPE, TYPE), R1(BOOL))
+
+// Compare two empty interface values.
+DEF_GO_RUNTIME(EMPTY_INTERFACE_COMPARE, "__go_empty_interface_compare",
+	       P2(EFACE, EFACE), R1(INT))
+
+// Compare an empty interface value to a non-interface value.
+DEF_GO_RUNTIME(EMPTY_INTERFACE_VALUE_COMPARE,
+	       "__go_empty_interface_value_compare",
+	       P3(EFACE, TYPE, POINTER), R1(INT))
+
+// Compare two non-empty interface values.
+DEF_GO_RUNTIME(INTERFACE_COMPARE, "__go_interface_compare",
+	       P2(IFACE, IFACE), R1(INT))
+
+// Compare a non-empty interface value to a non-interface value.
+DEF_GO_RUNTIME(INTERFACE_VALUE_COMPARE, "__go_interface_value_compare",
+	       P3(IFACE, TYPE, POINTER), R1(INT))
+
+// Compare a non-empty interface value to an interface value.
+DEF_GO_RUNTIME(INTERFACE_EMPTY_COMPARE, "__go_interface_empty_compare",
+	       P2(IFACE, EFACE), R1(INT))
+
+
+// Print a string (for print/println).
+DEF_GO_RUNTIME(PRINT_STRING, "__go_print_string", P1(STRING), R0())
+
+// Print a uint64 (for print/println).
+DEF_GO_RUNTIME(PRINT_UINT64, "__go_print_uint64", P1(UINT64), R0())
+
+// Print a int64 (for print/println).
+DEF_GO_RUNTIME(PRINT_INT64, "__go_print_int64", P1(INT64), R0())
+
+// Print a float64 (for print/println).
+DEF_GO_RUNTIME(PRINT_DOUBLE, "__go_print_double", P1(FLOAT64), R0())
+
+// Print a complex128 (for print/println).
+DEF_GO_RUNTIME(PRINT_COMPLEX, "__go_print_complex", P1(COMPLEX128), R0())
+
+// Print a bool (for print/println).
+DEF_GO_RUNTIME(PRINT_BOOL, "__go_print_bool", P1(BOOL), R0())
+
+// Print a pointer/map/channel/function (for print/println).
+DEF_GO_RUNTIME(PRINT_POINTER, "__go_print_pointer", P1(POINTER), R0())
+
+// Print an empty interface (for print/println).
+DEF_GO_RUNTIME(PRINT_EMPTY_INTERFACE, "__go_print_empty_interface",
+	       P1(EFACE), R0())
+
+// Print a non-empty interface (for print/println).
+DEF_GO_RUNTIME(PRINT_INTERFACE, "__go_print_interface", P1(IFACE), R0())
+
+// Print a slice (for print/println).
+DEF_GO_RUNTIME(PRINT_SLICE, "__go_print_slice", P1(SLICE), R0())
+
+// Print a space (for println).
+DEF_GO_RUNTIME(PRINT_SPACE, "__go_print_space", P0(), R0())
+
+// Print a newline (for println).
+DEF_GO_RUNTIME(PRINT_NL, "__go_print_nl", P0(), R0())
+
+
+// Used for field tracking for data analysis.
+DEF_GO_RUNTIME(FIELDTRACK, "__go_fieldtrack", P1(POINTER), R0())
+
+
+// Remove helper macros.
+#undef ABFT6
+#undef ABFT2
+#undef P0
+#undef P1
+#undef P2
+#undef P3
+#undef P4
+#undef P5
+#undef P6
+#undef R0
+#undef R1
+#undef R2