Sync libiberty/ & include/ with GCC

Note this brings in the interface files for libcc1/G++ as well, which
we will be needing in GDB soon anyway.  That commit renamed a method
in the C interface and that required a small update to GDB's compile/
code, which I've included that in this patch to keep the tree
building.

include/ChangeLog:
2017-09-15  Pedro Alves  <palves@redhat.com>

	* ansidecl.h (DISABLE_COPY_AND_ASSIGN): New macro.

	2017-09-12  Jiong Wang  <jiong.wang@arm.com>

	* dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP.
	* dwarf2.h (DW_CFA_DUP): New define.

	2017-08-21  Richard Biener  <rguenther@suse.de>

	* simple-object.h (simple_object_copy_lto_debug_sections): New
	function.

	2017-05-18  Martin Liska  <mliska@suse.cz>

	* ansidecl.h: Define CONSTEXPR macro.

	2017-05-24  Nathan Sidwell  <nathan@acm.org>

	* libiberty.h (ASTRDUP): Adjust cast to avoid warning.

	2017-01-30  Alexandre Oliva <aoliva@redhat.com>

	Introduce C++ support in libcc1.
	* gcc-c-fe.def (int_type_v0): Rename from...
	(int_type): ... this.  Introduce new version.
	(float_type_v0): Rename from...
	(float_type): ... this.  Introduce new version.
	(char_type): New.
	* gcc-c-interface.h (gcc_c_api_version): Add GCC_C_FE_VERSION_1.
	(gcc_type_array): Move...
	* gcc-interface.h: ... here.
	* gcc-cp-fe.def: New.
	* gcc-cp-interface.h: New.

	2016-04-29  Oleg Endo  <olegendo@gcc.gnu.org>

	* longlong.h (umul_ppmm): Remove SHMEDIA checks.
	(__umulsidi3, count_leading_zeros): Remove SHMEDIA implementations.

	2017-09-15  Yao Qi  <yao.qi@linaro.org>
	    Pedro Alves  <palves@redhat.com>

	* ansidecl.h (DISABLE_COPY_AND_ASSIGN): New macro.

	2017-09-12  Jiong Wang  <jiong.wang@arm.com>

	* dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP.
	* dwarf2.h (DW_CFA_DUP): New define.

	2017-08-21  Richard Biener  <rguenther@suse.de>

	* simple-object.h (simple_object_copy_lto_debug_sections): New
	function.

	2017-05-18  Martin Liska  <mliska@suse.cz>

	* ansidecl.h: Define CONSTEXPR macro.

	2017-05-24  Nathan Sidwell  <nathan@acm.org>

	* libiberty.h (ASTRDUP): Adjust cast to avoid warning.

	2017-01-30  Alexandre Oliva <aoliva@redhat.com>

	Introduce C++ support in libcc1.
	* gcc-c-fe.def (int_type_v0): Rename from...
	(int_type): ... this.  Introduce new version.
	(float_type_v0): Rename from...
	(float_type): ... this.  Introduce new version.
	(char_type): New.
	* gcc-c-interface.h (gcc_c_api_version): Add GCC_C_FE_VERSION_1.
	(gcc_type_array): Move...
	* gcc-interface.h: ... here.
	* gcc-cp-fe.def: New.
	* gcc-cp-interface.h: New.

	2016-04-29  Oleg Endo  <olegendo@gcc.gnu.org>

	* longlong.h (umul_ppmm): Remove SHMEDIA checks.
	(__umulsidi3, count_leading_zeros): Remove SHMEDIA implementations.

libiberty/ChangeLog:
2017-09-15  Nathan Sidwell  <nathan@acm.org>

	PR demangler/82195
	* cp-demangle.c (d_name): Add 'toplevel' parm.  Pass to	...
	(d_local_name): ... here.  Parse trailing function args on nested
	local_name.
	(d_encoding, d_special_name, d_class_enum_type): Adjust d_name calls.
	* testsuite/demangle-expected: Add tests.

2017-09-15  Richard Biener  <rguenther@suse.de>

	PR lto/81968
	* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
	Iterate marking dependent sections necessary.

2017-09-15  Nathan Sidwell  <nathan@acm.org>

	* cp-demangle.c (is_fnqual_component_type): Reimplement using
	FNQUAL_COMPONENT_CASE.
	(d_encoding): Hold bare_function_type in local var.
	(d_local_name): Build name in both cases and build result once.
	Collapse switch-if to single conditional.
	(d_local_name):

	* testsuite/demangle-expected: Realign blank lines with tests.

2017-09-12  Jiong Wang  <jiong.wang@arm.com>

	* dwarfnames.c (DW_CFA_DUP): New define.

gdb/ChangeLog:
2017-09-15  Pedro Alves  <palves@redhat.com>

	* compile/compile-c-types.c (convert_enum, convert_int)
	(convert_float): Adjust to refer to int_type_v0 and float_type_v0.

1 files changed, 496 insertions, 0 deletions

diff --git a/include/gcc-cp-interface.h b/include/gcc-cp-interface.h
new file mode 100644
index 0000000..6ef9e22
--- /dev/null
+++ b/include/gcc-cp-interface.h
@@ -0,0 +1,496 @@
+/* Interface between GCC C++ FE and GDB
+
+   Copyright (C) 2014-2017 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_CP_INTERFACE_H
+#define GCC_CP_INTERFACE_H
+
+#include "gcc-interface.h"
+
+/* This header defines the interface to the GCC API.  It must be both
+   valid C and valid C++, because it is included by both programs.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Forward declaration.  */
+
+struct gcc_cp_context;
+
+/*
+ * Definitions and declarations for the C++ front end.
+ */
+
+/* Defined versions of the C++ front-end API.  */
+
+enum gcc_cp_api_version
+{
+  GCC_CP_FE_VERSION_0 = 0
+};
+
+/* Qualifiers.  */
+
+enum gcc_cp_qualifiers
+{
+  GCC_CP_QUALIFIER_CONST = 1,
+  GCC_CP_QUALIFIER_VOLATILE = 2,
+  GCC_CP_QUALIFIER_RESTRICT = 4
+};
+
+/* Ref qualifiers.  */
+
+enum gcc_cp_ref_qualifiers {
+  GCC_CP_REF_QUAL_NONE = 0,
+  GCC_CP_REF_QUAL_LVALUE = 1,
+  GCC_CP_REF_QUAL_RVALUE = 2
+};
+
+/* Opaque typedef for unbound class templates.  They are used for
+   template arguments, and defaults for template template
+   parameters.  */
+
+typedef unsigned long long gcc_utempl;
+
+/* Opaque typedef for expressions.  They are used for template
+   arguments, defaults for non-type template parameters, and defaults
+   for function arguments.  */
+
+typedef unsigned long long gcc_expr;
+
+typedef enum
+  { GCC_CP_TPARG_VALUE, GCC_CP_TPARG_CLASS,
+    GCC_CP_TPARG_TEMPL, GCC_CP_TPARG_PACK }
+gcc_cp_template_arg_kind;
+
+typedef union
+{ gcc_expr value; gcc_type type; gcc_utempl templ; gcc_type pack; }
+gcc_cp_template_arg;
+
+/* An array of template arguments.  */
+
+struct gcc_cp_template_args
+{
+  /* Number of elements.  */
+
+  int n_elements;
+
+  /* kind[i] indicates what kind of template argument type[i] is.  */
+
+  char /* gcc_cp_template_arg_kind */ *kinds;
+
+  /* The template arguments.  */
+
+  gcc_cp_template_arg *elements;
+};
+
+/* An array of (default) function arguments.  */
+
+struct gcc_cp_function_args
+{
+  /* Number of elements.  */
+
+  int n_elements;
+
+  /* The (default) values for each argument.  */
+
+  gcc_expr *elements;
+};
+
+/* This enumerates the kinds of decls that GDB can create.  */
+
+enum gcc_cp_symbol_kind
+{
+  /* A function.  */
+
+  GCC_CP_SYMBOL_FUNCTION,
+
+  /* A variable.  */
+
+  GCC_CP_SYMBOL_VARIABLE,
+
+  /* A typedef, or an alias declaration (including template ones).  */
+
+  GCC_CP_SYMBOL_TYPEDEF,
+
+  /* A label.  */
+
+  GCC_CP_SYMBOL_LABEL,
+
+  /* A class, forward declared in build_decl (to be later defined in
+     start_class_definition), or, in a template parameter list scope,
+     a declaration of a template class, closing the parameter
+     list.  */
+
+  GCC_CP_SYMBOL_CLASS,
+
+  /* A union, forward declared in build_decl (to be later defined in
+     start_class_definition).  */
+
+  GCC_CP_SYMBOL_UNION,
+
+  /* An enumeration type being introduced with start_new_enum_type.  */
+
+  GCC_CP_SYMBOL_ENUM,
+
+  /* A nonstatic data member being introduced with new_field.  */
+
+  GCC_CP_SYMBOL_FIELD,
+
+  /* A base class in a gcc_vbase_array.  */
+
+  GCC_CP_SYMBOL_BASECLASS,
+
+  /* A using declaration in new_using_decl.  */
+
+  GCC_CP_SYMBOL_USING,
+
+  /* A (lambda) closure class type.  In many regards this is just like
+     a regular class, but it's not supposed to have base classes, some
+     of the member functions that are usually implicitly-defined are
+     deleted, and it should have an operator() member function that
+     holds the lambda body.  We can't instantiate objects of lambda
+     types from the snippet, but we can interact with them in such
+     ways as passing them to functions that take their types, and
+     calling their body.  */
+
+  GCC_CP_SYMBOL_LAMBDA_CLOSURE,
+
+  /* Marker to check that we haven't exceeded GCC_CP_SYMBOL_MASK.  */
+  GCC_CP_SYMBOL_END,
+
+  GCC_CP_SYMBOL_MASK = 15,
+
+  /* When defining a class member, at least one of the
+     GCC_CP_ACCESS_MASK bits must be set; when defining a namespace-
+     or union-scoped symbol, none of them must be set.  */
+
+  GCC_CP_ACCESS_PRIVATE,
+  GCC_CP_ACCESS_PUBLIC = GCC_CP_ACCESS_PRIVATE << 1,
+  GCC_CP_ACCESS_MASK = (GCC_CP_ACCESS_PUBLIC
+			       | GCC_CP_ACCESS_PRIVATE),
+  GCC_CP_ACCESS_PROTECTED = GCC_CP_ACCESS_MASK,
+  GCC_CP_ACCESS_NONE = 0,
+
+  GCC_CP_FLAG_BASE = GCC_CP_ACCESS_PRIVATE << 2,
+
+  /* Flags to be used along with GCC_CP_SYMBOL_FUNCTION:  */
+
+  /* This flag should be set for constructors, destructors and
+     operators.  */
+  GCC_CP_FLAG_SPECIAL_FUNCTION = GCC_CP_FLAG_BASE,
+
+  /* We intentionally cannot express inline, constexpr, or virtual
+     override for functions.  We can't inline or constexpr-replace
+     without a source-level body.  The override keyword is only
+     meaningful within the definition of the containing class.  */
+
+  /* This indicates a "virtual" member function, explicitly or
+     implicitly (due to a virtual function with the same name and
+     prototype in a base class) declared as such.  */
+  GCC_CP_FLAG_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 1,
+
+  /* The following two flags should only be set when the flag above is
+     set.  */
+
+  /* This indicates a pure virtual member function, i.e., one that is
+     declared with "= 0", even if a body is provided in the
+     definition.  */
+  GCC_CP_FLAG_PURE_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 2,
+
+  /* This indicates a "final" virtual member function.  */
+  GCC_CP_FLAG_FINAL_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 3,
+
+  /* This indicates a special member function should have its default
+     implementation.  This either means the function declaration
+     contains the "= default" tokens, or that the member function was
+     implicitly generated by the compiler, although the latter use is
+     discouraged: just let the compiler implicitly introduce it.
+
+     A member function defaulted after its first declaration has
+     slightly different ABI implications from one implicitly generated
+     or explicitly defaulted at the declaration (and definition)
+     point.  To avoid silent (possibly harmless) violation of the one
+     definition rule, it is recommended that this flag not be used for
+     such functions, and that the address of the definition be
+     supplied instead.  */
+  GCC_CP_FLAG_DEFAULTED_FUNCTION = GCC_CP_FLAG_BASE << 4,
+
+  /* This indicates a deleted member function, i.e., one that has been
+     defined as "= delete" at its declaration point, or one that has
+     been implicitly defined as deleted (with or without an explicit
+     "= default" definition).
+
+     This should not be used for implicitly-declared member functions
+     that resolve to deleted definitions, as it may affect the
+     implicit declaration of other member functions.  */
+  GCC_CP_FLAG_DELETED_FUNCTION = GCC_CP_FLAG_BASE << 5,
+
+  /* This indicates a constructor or type-conversion operator declared
+     as "explicit".  */
+
+  GCC_CP_FLAG_EXPLICIT_FUNCTION = GCC_CP_FLAG_BASE << 6,
+
+  GCC_CP_FLAG_END_FUNCTION,
+  GCC_CP_FLAG_MASK_FUNCTION = (((GCC_CP_FLAG_END_FUNCTION - 1) << 1)
+			       - GCC_CP_FLAG_BASE),
+
+  /* Flags to be used along with GCC_CP_SYMBOL_VARIABLE:  */
+
+  /* This indicates a variable declared as "constexpr".  */
+
+  GCC_CP_FLAG_CONSTEXPR_VARIABLE = GCC_CP_FLAG_BASE,
+
+  /* This indicates a variable declared as "thread_local".  ??? What
+     should the ADDRESS be?  */
+
+  GCC_CP_FLAG_THREAD_LOCAL_VARIABLE = GCC_CP_FLAG_BASE << 1,
+
+  GCC_CP_FLAG_END_VARIABLE,
+  GCC_CP_FLAG_MASK_VARIABLE = (((GCC_CP_FLAG_END_VARIABLE - 1) << 1)
+			       - GCC_CP_FLAG_BASE),
+
+  /* Flags to be used when defining nonstatic data members of classes
+     with new_field.  */
+
+  /* Use this when no flags are present.  */
+  GCC_CP_FLAG_FIELD_NOFLAG = 0,
+
+  /* This indicates the field is declared as mutable.  */
+  GCC_CP_FLAG_FIELD_MUTABLE = GCC_CP_FLAG_BASE,
+
+  GCC_CP_FLAG_END_FIELD,
+  GCC_CP_FLAG_MASK_FIELD = (((GCC_CP_FLAG_END_FIELD - 1) << 1)
+			    - GCC_CP_FLAG_BASE),
+
+  /* Flags to be used when defining an enum with
+     start_new_enum_type.  */
+
+  /* This indicates an enum type without any flags.  */
+  GCC_CP_FLAG_ENUM_NOFLAG = 0,
+
+  /* This indicates a scoped enum type.  */
+  GCC_CP_FLAG_ENUM_SCOPED = GCC_CP_FLAG_BASE,
+
+  GCC_CP_FLAG_END_ENUM,
+  GCC_CP_FLAG_MASK_ENUM = (((GCC_CP_FLAG_END_ENUM - 1) << 1)
+			       - GCC_CP_FLAG_BASE),
+
+
+  /* Flags to be used when introducing a class or a class template
+     with build_decl.  */
+
+  /* This indicates an enum type without any flags.  */
+  GCC_CP_FLAG_CLASS_NOFLAG = 0,
+
+  /* This indicates the class is actually a struct.  This has no
+     effect whatsoever on access control in this interface, since all
+     class members must have explicit access control bits set, but it
+     may affect error messages.  */
+  GCC_CP_FLAG_CLASS_IS_STRUCT = GCC_CP_FLAG_BASE,
+
+  GCC_CP_FLAG_END_CLASS,
+  GCC_CP_FLAG_MASK_CLASS = (((GCC_CP_FLAG_END_CLASS - 1) << 1)
+			       - GCC_CP_FLAG_BASE),
+
+
+  /* Flags to be used when introducing a virtual base class in a
+     gcc_vbase_array.  */
+
+  /* This indicates an enum type without any flags.  */
+  GCC_CP_FLAG_BASECLASS_NOFLAG = 0,
+
+  /* This indicates the class is actually a struct.  This has no
+     effect whatsoever on access control in this interface, since all
+     class members must have explicit access control bits set, but it
+     may affect error messages.  */
+  GCC_CP_FLAG_BASECLASS_VIRTUAL = GCC_CP_FLAG_BASE,
+
+  GCC_CP_FLAG_END_BASECLASS,
+  GCC_CP_FLAG_MASK_BASECLASS = (((GCC_CP_FLAG_END_BASECLASS - 1) << 1)
+				- GCC_CP_FLAG_BASE),
+
+
+  GCC_CP_FLAG_MASK = (GCC_CP_FLAG_MASK_FUNCTION
+		      | GCC_CP_FLAG_MASK_VARIABLE
+		      | GCC_CP_FLAG_MASK_FIELD
+		      | GCC_CP_FLAG_MASK_ENUM
+		      | GCC_CP_FLAG_MASK_CLASS
+		      | GCC_CP_FLAG_MASK_BASECLASS
+		      )
+};
+
+
+/* An array of types used for creating lists of base classes.  */
+
+struct gcc_vbase_array
+{
+  /* Number of elements.  */
+
+  int n_elements;
+
+  /* The base classes.  */
+
+  gcc_type *elements;
+
+  /* Flags for each base class.  Used to indicate access control and
+     virtualness.  */
+
+  enum gcc_cp_symbol_kind *flags;
+};
+
+
+/* This enumerates the types of symbols that GCC might request from
+   GDB.  */
+
+enum gcc_cp_oracle_request
+{
+  /* An identifier in namespace scope -- type, variable, function,
+     namespace, template.  All namespace-scoped symbols with the
+     requested name, in any namespace (including the global
+     namespace), should be defined in response to this request.  */
+
+  GCC_CP_ORACLE_IDENTIFIER
+};
+
+/* The type of the function called by GCC to ask GDB for a symbol's
+   definition.  DATUM is an arbitrary value supplied when the oracle
+   function is registered.  CONTEXT is the GCC context in which the
+   request is being made.  REQUEST specifies what sort of symbol is
+   being requested, and IDENTIFIER is the name of the symbol.  */
+
+typedef void gcc_cp_oracle_function (void *datum,
+				     struct gcc_cp_context *context,
+				     enum gcc_cp_oracle_request request,
+				     const char *identifier);
+
+/* The type of the function called by GCC to ask GDB for a symbol's
+   address.  This should return 0 if the address is not known.  */
+
+typedef gcc_address gcc_cp_symbol_address_function (void *datum,
+						    struct gcc_cp_context *ctxt,
+						    const char *identifier);
+
+/* The type of the function called by GCC to ask GDB to enter or leave
+   the user expression scope.  */
+
+typedef void gcc_cp_enter_leave_user_expr_scope_function (void *datum,
+							  struct gcc_cp_context
+							  *context);
+
+/* The vtable used by the C front end.  */
+
+struct gcc_cp_fe_vtable
+{
+  /* The version of the C interface.  The value is one of the
+     gcc_cp_api_version constants.  */
+
+  unsigned int cp_version;
+
+  /* Set the callbacks for this context.
+
+     The binding oracle is called whenever the C++ parser needs to
+     look up a symbol.  This gives the caller a chance to lazily
+     instantiate symbols using other parts of the gcc_cp_fe_interface
+     API.  The symbol is looked up without a scope, and the oracle
+     must supply a definition for ALL namespace-scoped definitions
+     bound to the symbol.
+
+     The address oracle is called whenever the C++ parser needs to
+     look up a symbol.  This may be called for symbols not provided by
+     the symbol oracle, such as built-in functions where GCC provides
+     the declaration; other internal symbols, such as those related
+     with thunks, rtti, and virtual tables are likely to be queried
+     through this interface too.  The identifier is a mangled symbol
+     name.
+
+     DATUM is an arbitrary piece of data that is passed back verbatim
+     to the callbacks in requests.  */
+
+  void (*set_callbacks) (struct gcc_cp_context *self,
+			 gcc_cp_oracle_function *binding_oracle,
+			 gcc_cp_symbol_address_function *address_oracle,
+			 gcc_cp_enter_leave_user_expr_scope_function *enter_scope,
+			 gcc_cp_enter_leave_user_expr_scope_function *leave_scope,
+			 void *datum);
+
+#define GCC_METHOD0(R, N) \
+  R (*N) (struct gcc_cp_context *);
+#define GCC_METHOD1(R, N, A) \
+  R (*N) (struct gcc_cp_context *, A);
+#define GCC_METHOD2(R, N, A, B) \
+  R (*N) (struct gcc_cp_context *, A, B);
+#define GCC_METHOD3(R, N, A, B, C) \
+  R (*N) (struct gcc_cp_context *, A, B, C);
+#define GCC_METHOD4(R, N, A, B, C, D) \
+  R (*N) (struct gcc_cp_context *, A, B, C, D);
+#define GCC_METHOD5(R, N, A, B, C, D, E) \
+  R (*N) (struct gcc_cp_context *, A, B, C, D, E);
+#define GCC_METHOD7(R, N, A, B, C, D, E, F, G) \
+  R (*N) (struct gcc_cp_context *, A, B, C, D, E, F, G);
+
+#include "gcc-cp-fe.def"
+
+#undef GCC_METHOD0
+#undef GCC_METHOD1
+#undef GCC_METHOD2
+#undef GCC_METHOD3
+#undef GCC_METHOD4
+#undef GCC_METHOD5
+#undef GCC_METHOD7
+
+};
+
+/* The C front end object.  */
+
+struct gcc_cp_context
+{
+  /* Base class.  */
+
+  struct gcc_base_context base;
+
+  /* Our vtable.  This is a separate field because this is simpler
+     than implementing a vtable inheritance scheme in C.  */
+
+  const struct gcc_cp_fe_vtable *cp_ops;
+};
+
+/* The name of the .so that the compiler builds.  We dlopen this
+   later.  */
+
+#define GCC_CP_FE_LIBCC libcc1.so
+
+/* The compiler exports a single initialization function.  This macro
+   holds its name as a symbol.  */
+
+#define GCC_CP_FE_CONTEXT gcc_cp_fe_context
+
+/* The type of the initialization function.  The caller passes in the
+   desired base version and desired C-specific version.  If the
+   request can be satisfied, a compatible gcc_context object will be
+   returned.  Otherwise, the function returns NULL.  */
+
+typedef struct gcc_cp_context *gcc_cp_fe_context_function
+    (enum gcc_base_api_version,
+     enum gcc_cp_api_version);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GCC_CP_INTERFACE_H */