+
+#ifdef HANDLE_PRAGMA_VISIBILITY
+static void handle_pragma_visibility (cpp_reader *);
+
+typedef enum symbol_visibility visibility;
+DEF_VEC_I (visibility);
+DEF_VEC_ALLOC_I (visibility, heap);
+static VEC (visibility, heap) *visstack;
+
+/* Push the visibility indicated by STR onto the top of the #pragma
+ visibility stack. */
+
+void
+push_visibility (const char *str)
+{
+ VEC_safe_push (visibility, heap, visstack,
+ default_visibility);
+ if (!strcmp (str, "default"))
+ default_visibility = VISIBILITY_DEFAULT;
+ else if (!strcmp (str, "internal"))
+ default_visibility = VISIBILITY_INTERNAL;
+ else if (!strcmp (str, "hidden"))
+ default_visibility = VISIBILITY_HIDDEN;
+ else if (!strcmp (str, "protected"))
+ default_visibility = VISIBILITY_PROTECTED;
+ else
+ GCC_BAD ("#pragma GCC visibility push() must specify default, internal, hidden or protected");
+ visibility_options.inpragma = 1;
+}
+
+/* Pop a level of the #pragma visibility stack. */
+
+void
+pop_visibility (void)
+{
+ default_visibility = VEC_pop (visibility, visstack);
+ visibility_options.inpragma
+ = VEC_length (visibility, visstack) != 0;
+}
+
+/* Sets the default visibility for symbols to something other than that
+ specified on the command line. */
+
+static void
+handle_pragma_visibility (cpp_reader *dummy ATTRIBUTE_UNUSED)
+{
+ /* Form is #pragma GCC visibility push(hidden)|pop */
+ tree x;
+ enum cpp_ttype token;
+ enum { bad, push, pop } action = bad;
+
+ token = pragma_lex (&x);
+ if (token == CPP_NAME)
+ {
+ const char *op = IDENTIFIER_POINTER (x);
+ if (!strcmp (op, "push"))
+ action = push;
+ else if (!strcmp (op, "pop"))
+ action = pop;
+ }
+ if (bad == action)
+ GCC_BAD ("#pragma GCC visibility must be followed by push or pop");
+ else
+ {
+ if (pop == action)
+ {
+ if (!VEC_length (visibility, visstack))
+ GCC_BAD ("no matching push for %<#pragma GCC visibility pop%>");
+ else
+ pop_visibility ();
+ }
+ else
+ {
+ if (pragma_lex (&x) != CPP_OPEN_PAREN)
+ GCC_BAD ("missing %<(%> after %<#pragma GCC visibility push%> - ignored");
+ token = pragma_lex (&x);
+ if (token != CPP_NAME)
+ GCC_BAD ("malformed #pragma GCC visibility push");
+ else
+ push_visibility (IDENTIFIER_POINTER (x));
+ if (pragma_lex (&x) != CPP_CLOSE_PAREN)
+ GCC_BAD ("missing %<(%> after %<#pragma GCC visibility push%> - ignored");
+ }
+ }
+ if (pragma_lex (&x) != CPP_EOF)
+ warning (OPT_Wpragmas, "junk at end of %<#pragma GCC visibility%>");
+}
+
+#endif
+
+static void
+handle_pragma_diagnostic(cpp_reader *ARG_UNUSED(dummy))
+{
+ const char *kind_string, *option_string;
+ unsigned int option_index;
+ enum cpp_ttype token;
+ diagnostic_t kind;
+ tree x;
+
+ if (cfun)
+ {
+ error ("#pragma GCC diagnostic not allowed inside functions");
+ return;
+ }
+
+ token = pragma_lex (&x);
+ if (token != CPP_NAME)
+ GCC_BAD ("missing [error|warning|ignored] after %<#pragma GCC diagnostic%>");
+ kind_string = IDENTIFIER_POINTER (x);
+ if (strcmp (kind_string, "error") == 0)
+ kind = DK_ERROR;
+ else if (strcmp (kind_string, "warning") == 0)
+ kind = DK_WARNING;
+ else if (strcmp (kind_string, "ignored") == 0)
+ kind = DK_IGNORED;
+ else
+ GCC_BAD ("expected [error|warning|ignored] after %<#pragma GCC diagnostic%>");
+
+ token = pragma_lex (&x);
+ if (token != CPP_STRING)
+ GCC_BAD ("missing option after %<#pragma GCC diagnostic%> kind");
+ option_string = TREE_STRING_POINTER (x);
+ for (option_index = 0; option_index < cl_options_count; option_index++)
+ if (strcmp (cl_options[option_index].opt_text, option_string) == 0)
+ {
+ /* This overrides -Werror, for example. */
+ diagnostic_classify_diagnostic (global_dc, option_index, kind);
+ /* This makes sure the option is enabled, like -Wfoo would do. */
+ if (cl_options[option_index].var_type == CLVC_BOOLEAN
+ && cl_options[option_index].flag_var
+ && kind != DK_IGNORED)
+ *(int *) cl_options[option_index].flag_var = 1;
+ return;
+ }
+ GCC_BAD ("unknown option after %<#pragma GCC diagnostic%> kind");
+}
+
+/* Parse #pragma GCC target (xxx) to set target specific options. */
+static void
+handle_pragma_target(cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x;
+ bool close_paren_needed_p = false;
+
+ if (cfun)
+ {
+ error ("#pragma GCC option is not allowed inside functions");
+ return;
+ }
+
+ token = pragma_lex (&x);
+ if (token == CPP_OPEN_PAREN)
+ {
+ close_paren_needed_p = true;
+ token = pragma_lex (&x);
+ }
+
+ if (token != CPP_STRING)
+ {
+ GCC_BAD ("%<#pragma GCC option%> is not a string");
+ return;
+ }
+
+ /* Strings are user options. */
+ else
+ {
+ tree args = NULL_TREE;
+
+ do
+ {
+ /* Build up the strings now as a tree linked list. Skip empty
+ strings. */
+ if (TREE_STRING_LENGTH (x) > 0)
+ args = tree_cons (NULL_TREE, x, args);
+
+ token = pragma_lex (&x);
+ while (token == CPP_COMMA)
+ token = pragma_lex (&x);
+ }
+ while (token == CPP_STRING);
+
+ if (close_paren_needed_p)
+ {
+ if (token == CPP_CLOSE_PAREN)
+ token = pragma_lex (&x);
+ else
+ GCC_BAD ("%<#pragma GCC target (string [,string]...)%> does "
+ "not have a final %<)%>.");
+ }
+
+ if (token != CPP_EOF)
+ {
+ error ("#pragma GCC target string... is badly formed");
+ return;
+ }
+
+ /* put arguments in the order the user typed them. */
+ args = nreverse (args);
+
+ if (targetm.target_option.pragma_parse (args, NULL_TREE))
+ current_target_pragma = args;
+ }
+}
+
+/* Handle #pragma GCC optimize to set optimization options. */
+static void
+handle_pragma_optimize (cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x;
+ bool close_paren_needed_p = false;
+ tree optimization_previous_node = optimization_current_node;
+
+ if (cfun)
+ {
+ error ("#pragma GCC optimize is not allowed inside functions");
+ return;
+ }
+
+ token = pragma_lex (&x);
+ if (token == CPP_OPEN_PAREN)
+ {
+ close_paren_needed_p = true;
+ token = pragma_lex (&x);
+ }
+
+ if (token != CPP_STRING && token != CPP_NUMBER)
+ {
+ GCC_BAD ("%<#pragma GCC optimize%> is not a string or number");
+ return;
+ }
+
+ /* Strings/numbers are user options. */
+ else
+ {
+ tree args = NULL_TREE;
+
+ do
+ {
+ /* Build up the numbers/strings now as a list. */
+ if (token != CPP_STRING || TREE_STRING_LENGTH (x) > 0)
+ args = tree_cons (NULL_TREE, x, args);
+
+ token = pragma_lex (&x);
+ while (token == CPP_COMMA)
+ token = pragma_lex (&x);
+ }
+ while (token == CPP_STRING || token == CPP_NUMBER);
+
+ if (close_paren_needed_p)
+ {
+ if (token == CPP_CLOSE_PAREN)
+ token = pragma_lex (&x);
+ else
+ GCC_BAD ("%<#pragma GCC optimize (string [,string]...)%> does "
+ "not have a final %<)%>.");
+ }
+
+ if (token != CPP_EOF)
+ {
+ error ("#pragma GCC optimize string... is badly formed");
+ return;
+ }
+
+ /* put arguments in the order the user typed them. */
+ args = nreverse (args);
+
+ parse_optimize_options (args, false);
+ current_optimize_pragma = chainon (current_optimize_pragma, args);
+ optimization_current_node = build_optimization_node ();
+ c_cpp_builtins_optimize_pragma (parse_in,
+ optimization_previous_node,
+ optimization_current_node);
+ }
+}
+
+/* Stack of the #pragma GCC options created with #pragma GCC push_option. Save
+ both the binary representation of the options and the TREE_LIST of
+ strings that will be added to the function's attribute list. */
+typedef struct opt_stack GTY(())
+{
+ struct opt_stack *prev;
+ tree target_binary;
+ tree target_strings;
+ tree optimize_binary;
+ tree optimize_strings;
+} opt_stack;
+
+static GTY(()) struct opt_stack * options_stack;
+
+/* Handle #pragma GCC push_options to save the current target and optimization
+ options. */
+
+static void
+handle_pragma_push_options (cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x = 0;
+ opt_stack *p;
+
+ token = pragma_lex (&x);
+ if (token != CPP_EOF)
+ {
+ warning (OPT_Wpragmas, "junk at end of %<#pragma push_options%>");
+ return;
+ }
+
+ p = GGC_NEW (opt_stack);
+ p->prev = options_stack;
+ options_stack = p;
+
+ /* Save optimization and target flags in binary format. */
+ p->optimize_binary = build_optimization_node ();
+ p->target_binary = build_target_option_node ();
+
+ /* Save optimization and target flags in string list format. */
+ p->optimize_strings = copy_list (current_optimize_pragma);
+ p->target_strings = copy_list (current_target_pragma);
+}
+
+/* Handle #pragma GCC pop_options to restore the current target and
+ optimization options from a previous push_options. */
+
+static void
+handle_pragma_pop_options (cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x = 0;
+ opt_stack *p;
+
+ token = pragma_lex (&x);
+ if (token != CPP_EOF)
+ {
+ warning (OPT_Wpragmas, "junk at end of %<#pragma pop_options%>");
+ return;
+ }
+
+ if (! options_stack)
+ {
+ warning (OPT_Wpragmas,
+ "%<#pragma GCC pop_options%> without a corresponding "
+ "%<#pragma GCC push_options%>");
+ return;
+ }
+
+ p = options_stack;
+ options_stack = p->prev;
+
+ if (p->target_binary != target_option_current_node)
+ {
+ (void) targetm.target_option.pragma_parse (NULL_TREE, p->target_binary);
+ target_option_current_node = p->target_binary;
+ }
+
+ if (p->optimize_binary != optimization_current_node)
+ {
+ tree old_optimize = optimization_current_node;
+ cl_optimization_restore (TREE_OPTIMIZATION (p->optimize_binary));
+ c_cpp_builtins_optimize_pragma (parse_in, old_optimize,
+ p->optimize_binary);
+ optimization_current_node = p->optimize_binary;
+ }
+
+ current_target_pragma = p->target_strings;
+ current_optimize_pragma = p->optimize_strings;
+}
+
+/* Handle #pragma GCC reset_options to restore the current target and
+ optimization options to the original options used on the command line. */
+
+static void
+handle_pragma_reset_options (cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x = 0;
+ tree new_optimize = optimization_default_node;
+ tree new_target = target_option_default_node;
+
+ token = pragma_lex (&x);
+ if (token != CPP_EOF)
+ {
+ warning (OPT_Wpragmas, "junk at end of %<#pragma reset_options%>");
+ return;
+ }
+
+ if (new_target != target_option_current_node)
+ {
+ (void) targetm.target_option.pragma_parse (NULL_TREE, new_target);
+ target_option_current_node = new_target;
+ }
+
+ if (new_optimize != optimization_current_node)
+ {
+ tree old_optimize = optimization_current_node;
+ cl_optimization_restore (TREE_OPTIMIZATION (new_optimize));
+ c_cpp_builtins_optimize_pragma (parse_in, old_optimize, new_optimize);
+ optimization_current_node = new_optimize;
+ }
+
+ current_target_pragma = NULL_TREE;
+ current_optimize_pragma = NULL_TREE;
+}
+
+/* Print a plain user-specified message. */
+
+static void
+handle_pragma_message (cpp_reader *ARG_UNUSED(dummy))
+{
+ enum cpp_ttype token;
+ tree x, message = 0;
+
+ token = pragma_lex (&x);
+ if (token == CPP_OPEN_PAREN)
+ {
+ token = pragma_lex (&x);
+ if (token == CPP_STRING)
+ message = x;
+ else
+ GCC_BAD ("expected a string after %<#pragma message%>");
+ if (pragma_lex (&x) != CPP_CLOSE_PAREN)
+ GCC_BAD ("malformed %<#pragma message%>, ignored");
+ }
+ else if (token == CPP_STRING)
+ message = x;
+ else
+ GCC_BAD ("expected a string after %<#pragma message%>");
+
+ gcc_assert (message);
+
+ if (pragma_lex (&x) != CPP_EOF)
+ warning (OPT_Wpragmas, "junk at end of %<#pragma message%>");
+
+ if (TREE_STRING_LENGTH (message) > 1)
+ inform (input_location, "#pragma message: %s", TREE_STRING_POINTER (message));
+}
+
+/* A vector of registered pragma callbacks. */
+
+DEF_VEC_O (pragma_handler);
+DEF_VEC_ALLOC_O (pragma_handler, heap);
+
+static VEC(pragma_handler, heap) *registered_pragmas;
+
+typedef struct
+{
+ const char *space;
+ const char *name;
+} pragma_ns_name;
+
+DEF_VEC_O (pragma_ns_name);
+DEF_VEC_ALLOC_O (pragma_ns_name, heap);
+
+static VEC(pragma_ns_name, heap) *registered_pp_pragmas;
+
+struct omp_pragma_def { const char *name; unsigned int id; };
+static const struct omp_pragma_def omp_pragmas[] = {
+ { "atomic", PRAGMA_OMP_ATOMIC },
+ { "barrier", PRAGMA_OMP_BARRIER },
+ { "critical", PRAGMA_OMP_CRITICAL },
+ { "flush", PRAGMA_OMP_FLUSH },
+ { "for", PRAGMA_OMP_FOR },
+ { "master", PRAGMA_OMP_MASTER },
+ { "ordered", PRAGMA_OMP_ORDERED },
+ { "parallel", PRAGMA_OMP_PARALLEL },
+ { "section", PRAGMA_OMP_SECTION },
+ { "sections", PRAGMA_OMP_SECTIONS },
+ { "single", PRAGMA_OMP_SINGLE },
+ { "task", PRAGMA_OMP_TASK },
+ { "taskwait", PRAGMA_OMP_TASKWAIT },
+ { "threadprivate", PRAGMA_OMP_THREADPRIVATE }
+};
+
+void
+c_pp_lookup_pragma (unsigned int id, const char **space, const char **name)
+{
+ const int n_omp_pragmas = sizeof (omp_pragmas) / sizeof (*omp_pragmas);
+ int i;
+
+ for (i = 0; i < n_omp_pragmas; ++i)
+ if (omp_pragmas[i].id == id)
+ {
+ *space = "omp";
+ *name = omp_pragmas[i].name;
+ return;
+ }
+
+ if (id >= PRAGMA_FIRST_EXTERNAL
+ && (id < PRAGMA_FIRST_EXTERNAL
+ + VEC_length (pragma_ns_name, registered_pp_pragmas)))
+ {
+ *space = VEC_index (pragma_ns_name, registered_pp_pragmas,
+ id - PRAGMA_FIRST_EXTERNAL)->space;
+ *name = VEC_index (pragma_ns_name, registered_pp_pragmas,
+ id - PRAGMA_FIRST_EXTERNAL)->name;
+ return;
+ }
+
+ gcc_unreachable ();
+}
+
+/* Front-end wrappers for pragma registration to avoid dragging