#define GCC_BAD2(gmsgid, arg) \
do { warning (OPT_Wpragmas, gmsgid, arg); return; } while (0)
-typedef struct align_stack GTY(())
-{
+typedef struct GTY(()) align_stack {
int alignment;
tree id;
struct align_stack * prev;
}
if (entry == NULL)
warning (OPT_Wpragmas, "\
-#pragma pack(pop, %s) encountered without matching #pragma pack(push, %s)"
- , IDENTIFIER_POINTER (id), IDENTIFIER_POINTER (id));
+#pragma pack(pop, %E) encountered without matching #pragma pack(push, %E)"
+ , id, id);
}
entry = alignment_stack->prev;
else if (!strcmp (op, "pop"))
action = pop;
else
- GCC_BAD2 ("unknown action %qs for %<#pragma pack%> - ignored", op);
+ GCC_BAD2 ("unknown action %qE for %<#pragma pack%> - ignored", x);
while ((token = pragma_lex (&x)) == CPP_COMMA)
{
}
#endif /* HANDLE_PRAGMA_PACK */
-struct def_pragma_macro_value GTY(())
-{
+struct GTY(()) def_pragma_macro_value {
struct def_pragma_macro_value *prev;
cpp_macro *value;
};
-struct def_pragma_macro GTY(())
-{
+struct GTY(()) def_pragma_macro {
hashval_t hash;
const char *name;
struct def_pragma_macro_value value;
GCC_BAD ("unknown option after %<#pragma GCC diagnostic%> kind");
}
-/* Stack of the #pragma GCC options created with #pragma GCC option push. */
-static GTY(()) VEC(tree,gc) *option_stack;
-
-/* Parse #pragma GCC option (xxx) to set target specific options. */
+/* Parse #pragma GCC target (xxx) to set target specific options. */
static void
-handle_pragma_option(cpp_reader *ARG_UNUSED(dummy))
+handle_pragma_target(cpp_reader *ARG_UNUSED(dummy))
{
enum cpp_ttype token;
- const char *name;
tree x;
bool close_paren_needed_p = false;
return;
}
- if (!targetm.target_option.pragma_parse)
- {
- error ("#pragma GCC option is not supported for this system");
- return;
- }
-
token = pragma_lex (&x);
if (token == CPP_OPEN_PAREN)
{
token = pragma_lex (&x);
}
- if (token == CPP_NAME)
- {
- bool call_pragma_parse_p = false;
- bool ok_p;
-
- name = IDENTIFIER_POINTER (x);
- if (strcmp (name, "reset") == 0)
- {
- current_option_pragma = NULL_TREE;
- call_pragma_parse_p = true;
- }
-
- else if (strcmp (name, "push") == 0)
- VEC_safe_push (tree, gc, option_stack,
- copy_list (current_option_pragma));
-
- else if (strcmp (name, "pop") == 0)
- {
- int len = VEC_length (tree, option_stack);
- if (len == 0)
- {
- GCC_BAD ("%<#pragma GCC option pop%> without a %<#pragma GCC "
- "option push%>");
- return;
- }
- else
- {
- VEC_truncate (tree, option_stack, len-1);
- current_option_pragma = ((len > 1)
- ? VEC_last (tree, option_stack)
- : NULL_TREE);
-
- call_pragma_parse_p = true;
- }
- }
-
- else
- {
- GCC_BAD ("%<#pragma GCC option%> is not a string or "
- "push/pop/reset");
- return;
- }
-
- token = pragma_lex (&x);
- if (close_paren_needed_p)
- {
- if (token == CPP_CLOSE_PAREN)
- token = pragma_lex (&x);
- else
- GCC_BAD ("%<#pragma GCC option ([push|pop|reset])%> does not "
- "have a final %<)%>.");
- }
-
- if (token != CPP_EOF)
- {
- GCC_BAD ("%<#pragma GCC option [push|pop|reset]%> is badly "
- "formed");
- return;
- }
-
- /* See if we need to call the pragma_parse hook. This must occur at the
- end after processing all of the tokens, or we may get spurious errors
- when we define or undef macros. */
- ok_p = targetm.target_option.pragma_parse (current_option_pragma);
- gcc_assert (ok_p);
- }
-
- else if (token != CPP_STRING)
+ if (token != CPP_STRING)
{
- GCC_BAD ("%<#pragma GCC option%> is not a string or push/pop/reset");
+ GCC_BAD ("%<#pragma GCC option%> is not a string");
return;
}
if (token == CPP_CLOSE_PAREN)
token = pragma_lex (&x);
else
- GCC_BAD ("%<#pragma GCC option (string [,string]...)%> does "
+ GCC_BAD ("%<#pragma GCC target (string [,string]...)%> does "
"not have a final %<)%>.");
}
if (token != CPP_EOF)
{
- error ("#pragma GCC option string... is badly formed");
+ 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))
- current_option_pragma = args;
+ if (targetm.target_option.pragma_parse (args, NULL_TREE))
+ current_target_pragma = args;
}
}
-/* Stack of the #pragma GCC optimize options created with #pragma GCC optimize
- push. */
-static GTY(()) VEC(tree,gc) *optimize_stack;
-
/* Handle #pragma GCC optimize to set optimization options. */
static void
-handle_pragma_optimize(cpp_reader *ARG_UNUSED(dummy))
+handle_pragma_optimize (cpp_reader *ARG_UNUSED(dummy))
{
enum cpp_ttype token;
- const char *name;
tree x;
bool close_paren_needed_p = false;
tree optimization_previous_node = optimization_current_node;
token = pragma_lex (&x);
}
- if (token == CPP_NAME)
- {
- bool call_opt_p = false;
-
- name = IDENTIFIER_POINTER (x);
- if (strcmp (name, "reset") == 0)
- {
- struct cl_optimization *def
- = TREE_OPTIMIZATION (optimization_default_node);
- current_optimize_pragma = NULL_TREE;
- optimization_current_node = optimization_default_node;
- cl_optimization_restore (def);
- call_opt_p = true;
- }
-
- else if (strcmp (name, "push") == 0)
- VEC_safe_push (tree, gc, optimize_stack, current_optimize_pragma);
-
- else if (strcmp (name, "pop") == 0)
- {
- int len = VEC_length (tree, optimize_stack);
- if (len == 0)
- {
- GCC_BAD ("%<#pragma GCC optimize pop%> without a %<#pragma "
- "GCC optimize push%>");
- return;
- }
- else
- {
- VEC_truncate (tree, optimize_stack, len-1);
- current_optimize_pragma
- = ((len > 1)
- ? VEC_last (tree, optimize_stack)
- : NULL_TREE);
-
- call_opt_p = true;
- if (current_optimize_pragma)
- {
- bool ok_p
- = parse_optimize_options (current_optimize_pragma, false);
- gcc_assert (ok_p); /* should be parsed previously. */
- optimization_current_node = build_optimization_node ();
- }
- else
- {
- struct cl_optimization *opt
- = TREE_OPTIMIZATION (optimization_default_node);
- optimization_current_node = optimization_default_node;
- cl_optimization_restore (opt);
- }
- }
- }
-
- else
- {
- GCC_BAD ("%<#pragma GCC optimize%> is not a string or "
- "push/pop/reset");
- return;
- }
-
- token = pragma_lex (&x);
- if (close_paren_needed_p)
- {
- if (token == CPP_CLOSE_PAREN)
- token = pragma_lex (&x);
- else
- GCC_BAD ("%<#pragma GCC optimize ([push|pop|reset])%> does not "
- "have a final %<)%>.");
- }
-
- if (token != CPP_EOF)
- {
- GCC_BAD ("%<#pragma GCC optimize [push|pop|reset]%> is badly "
- "formed");
- return;
- }
-
- if (call_opt_p &&
- (optimization_previous_node != optimization_current_node))
- c_cpp_builtins_optimize_pragma (parse_in,
- optimization_previous_node,
- optimization_current_node);
-
- }
-
- else if (token != CPP_STRING && token != CPP_NUMBER)
+ if (token != CPP_STRING && token != CPP_NUMBER)
{
- GCC_BAD ("%<#pragma GCC optimize%> is not a string, number, or "
- "push/pop/reset");
+ GCC_BAD ("%<#pragma GCC optimize%> is not a string or number");
return;
}
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,
}
}
+/* 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 GTY(()) opt_stack {
+ 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));
+}
+
+/* Mark whether the current location is valid for a STDC pragma. */
+
+static bool valid_location_for_stdc_pragma;
+
+void
+mark_valid_location_for_stdc_pragma (bool flag)
+{
+ valid_location_for_stdc_pragma = flag;
+}
+
+/* Return true if the current location is valid for a STDC pragma. */
+
+bool
+valid_location_for_stdc_pragma_p (void)
+{
+ return valid_location_for_stdc_pragma;
+}
+
+enum pragma_switch_t { PRAGMA_ON, PRAGMA_OFF, PRAGMA_DEFAULT, PRAGMA_BAD };
+
+/* A STDC pragma must appear outside of external declarations or
+ preceding all explicit declarations and statements inside a compound
+ statement; its behavior is undefined if used in any other context.
+ It takes a switch of ON, OFF, or DEFAULT. */
+
+static enum pragma_switch_t
+handle_stdc_pragma (const char *pname)
+{
+ const char *arg;
+ tree t;
+ enum pragma_switch_t ret;
+
+ if (!valid_location_for_stdc_pragma_p ())
+ {
+ warning (OPT_Wpragmas, "invalid location for %<pragma %s%>, ignored",
+ pname);
+ return PRAGMA_BAD;
+ }
+
+ if (pragma_lex (&t) != CPP_NAME)
+ {
+ warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname);
+ return PRAGMA_BAD;
+ }
+
+ arg = IDENTIFIER_POINTER (t);
+
+ if (!strcmp (arg, "ON"))
+ ret = PRAGMA_ON;
+ else if (!strcmp (arg, "OFF"))
+ ret = PRAGMA_OFF;
+ else if (!strcmp (arg, "DEFAULT"))
+ ret = PRAGMA_DEFAULT;
+ else
+ {
+ warning (OPT_Wpragmas, "malformed %<#pragma %s%>, ignored", pname);
+ return PRAGMA_BAD;
+ }
+
+ if (pragma_lex (&t) != CPP_EOF)
+ {
+ warning (OPT_Wpragmas, "junk at end of %<#pragma %s%>", pname);
+ return PRAGMA_BAD;
+ }
+
+ return ret;
+}
+
+/* #pragma STDC FLOAT_CONST_DECIMAL64 ON
+ #pragma STDC FLOAT_CONST_DECIMAL64 OFF
+ #pragma STDC FLOAT_CONST_DECIMAL64 DEFAULT */
+
+static void
+handle_pragma_float_const_decimal64 (cpp_reader *ARG_UNUSED (dummy))
+{
+ if (c_dialect_cxx ())
+ {
+ if (warn_unknown_pragmas > in_system_header)
+ warning (OPT_Wunknown_pragmas,
+ "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported"
+ " for C++");
+ return;
+ }
+
+ if (!targetm.decimal_float_supported_p ())
+ {
+ if (warn_unknown_pragmas > in_system_header)
+ warning (OPT_Wunknown_pragmas,
+ "%<#pragma STDC FLOAT_CONST_DECIMAL64%> is not supported"
+ " on this target");
+ return;
+ }
+
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C does not support %<#pragma STDC FLOAT_CONST_DECIMAL64%>");
+
+ switch (handle_stdc_pragma ("STDC FLOAT_CONST_DECIMAL64"))
+ {
+ case PRAGMA_ON:
+ set_float_const_decimal64 ();
+ break;
+ case PRAGMA_OFF:
+ case PRAGMA_DEFAULT:
+ clear_float_const_decimal64 ();
+ break;
+ case PRAGMA_BAD:
+ break;
+ }
+}
+
/* A vector of registered pragma callbacks. */
DEF_VEC_O (pragma_handler);
#endif
c_register_pragma ("GCC", "diagnostic", handle_pragma_diagnostic);
- c_register_pragma ("GCC", "option", handle_pragma_option);
+ c_register_pragma ("GCC", "target", handle_pragma_target);
c_register_pragma ("GCC", "optimize", handle_pragma_optimize);
+ c_register_pragma ("GCC", "push_options", handle_pragma_push_options);
+ c_register_pragma ("GCC", "pop_options", handle_pragma_pop_options);
+ c_register_pragma ("GCC", "reset_options", handle_pragma_reset_options);
+
+ c_register_pragma ("STDC", "FLOAT_CONST_DECIMAL64",
+ handle_pragma_float_const_decimal64);
c_register_pragma_with_expansion (0, "redefine_extname", handle_pragma_redefine_extname);
c_register_pragma (0, "extern_prefix", handle_pragma_extern_prefix);
+ c_register_pragma_with_expansion (0, "message", handle_pragma_message);
+
#ifdef REGISTER_TARGET_PRAGMAS
REGISTER_TARGET_PRAGMAS ();
#endif
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