/* Handle #pragma, system V.4 style. Supports #pragma weak and #pragma pack.
Copyright (C) 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2006 Free Software Foundation, Inc.
+ 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "tm.h"
#include "rtl.h"
#include "tree.h"
-#include "function.h"
+#include "function.h" /* For cfun. FIXME: Does the parser know
+ when it is inside a function, so that
+ we don't have to look at cfun? */
#include "cpplib.h"
#include "c-pragma.h"
#include "flags.h"
#include "toplev.h"
-#include "ggc.h"
#include "c-common.h"
#include "output.h"
-#include "tm_p.h"
+#include "tm_p.h" /* For REGISTER_TARGET_PRAGMAS (why is
+ this not a target hook?). */
#include "vec.h"
+#include "vecprim.h"
#include "target.h"
#include "diagnostic.h"
#include "opts.h"
+#include "plugin.h"
#define GCC_BAD(gmsgid) \
do { warning (OPT_Wpragmas, gmsgid); return; } while (0)
#define GCC_BAD2(gmsgid, arg) \
do { warning (OPT_Wpragmas, gmsgid, arg); return; } while (0)
-typedef struct align_stack GTY(())
-{
- int alignment;
- tree id;
+typedef struct GTY(()) align_stack {
+ int alignment;
+ tree id;
struct align_stack * prev;
} align_stack;
#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
/* If we have a "global" #pragma pack(<n>) in effect when the first
- #pragma pack(push,<n>) is encountered, this stores the value of
- maximum_field_alignment in effect. When the final pop_alignment()
+ #pragma pack(push,<n>) is encountered, this stores the value of
+ maximum_field_alignment in effect. When the final pop_alignment()
happens, we restore the value to this, not to a value of 0 for
maximum_field_alignment. Value is in bits. */
static int default_alignment;
entry = GGC_NEW (align_stack);
entry->alignment = alignment;
- entry->id = id;
- entry->prev = alignment_stack;
-
- /* The current value of maximum_field_alignment is not necessarily
- 0 since there may be a #pragma pack(<n>) in effect; remember it
+ entry->id = id;
+ entry->prev = alignment_stack;
+
+ /* The current value of maximum_field_alignment is not necessarily
+ 0 since there may be a #pragma pack(<n>) in effect; remember it
so that we can restore it after the final #pragma pop(). */
if (alignment_stack == NULL)
default_alignment = maximum_field_alignment;
-
+
alignment_stack = entry;
maximum_field_alignment = alignment;
pop_alignment (tree id)
{
align_stack * entry;
-
+
if (alignment_stack == NULL)
GCC_BAD ("#pragma pack (pop) encountered without matching #pragma pack (push)");
}
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;
/* #pragma pack ()
#pragma pack (N)
-
+
#pragma pack (push)
#pragma pack (push, N)
#pragma pack (push, ID)
}
else if (token == CPP_NUMBER)
{
+ if (TREE_CODE (x) != INTEGER_CST)
+ GCC_BAD ("invalid constant in %<#pragma pack%> - ignored");
align = TREE_INT_CST_LOW (x);
action = set;
if (pragma_lex (&x) != CPP_CLOSE_PAREN)
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)
{
}
else if (token == CPP_NUMBER && action == push && align == -1)
{
+ if (TREE_CODE (x) != INTEGER_CST)
+ GCC_BAD ("invalid constant in %<#pragma pack%> - ignored");
align = TREE_INT_CST_LOW (x);
if (align == -1)
action = set;
{
case set: SET_GLOBAL_ALIGNMENT (align); break;
case push: push_alignment (align, id); break;
- case pop: pop_alignment (id); break;
+ case pop: pop_alignment (id); break;
}
}
#endif /* HANDLE_PRAGMA_PACK */
-static GTY(()) tree pending_weaks;
+typedef struct GTY(()) pending_weak_d
+{
+ tree name;
+ tree value;
+} pending_weak;
+
+DEF_VEC_O(pending_weak);
+DEF_VEC_ALLOC_O(pending_weak,gc);
+
+static GTY(()) VEC(pending_weak,gc) *pending_weaks;
#ifdef HANDLE_PRAGMA_WEAK
static void apply_pragma_weak (tree, tree);
&& !DECL_WEAK (decl) /* Don't complain about a redundant #pragma. */
&& TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
warning (OPT_Wpragmas, "applying #pragma weak %q+D after first use "
- "results in unspecified behavior", decl);
+ "results in unspecified behavior", decl);
declare_weak (decl);
}
void
maybe_apply_pragma_weak (tree decl)
{
- tree *p, t, id;
+ tree id;
+ int i;
+ pending_weak *pe;
/* Avoid asking for DECL_ASSEMBLER_NAME when it's not needed. */
id = DECL_ASSEMBLER_NAME (decl);
- for (p = &pending_weaks; (t = *p) ; p = &TREE_CHAIN (t))
- if (id == TREE_PURPOSE (t))
+ for (i = 0; VEC_iterate (pending_weak, pending_weaks, i, pe); i++)
+ if (id == pe->name)
{
- apply_pragma_weak (decl, TREE_VALUE (t));
- *p = TREE_CHAIN (t);
+ apply_pragma_weak (decl, pe->value);
+ VEC_unordered_remove (pending_weak, pending_weaks, i);
break;
}
}
void
maybe_apply_pending_pragma_weaks (void)
{
- tree *p, t, alias_id, id, decl, *next;
+ tree alias_id, id, decl;
+ int i;
+ pending_weak *pe;
- for (p = &pending_weaks; (t = *p) ; p = next)
+ for (i = 0; VEC_iterate (pending_weak, pending_weaks, i, pe); i++)
{
- next = &TREE_CHAIN (t);
- alias_id = TREE_PURPOSE (t);
- id = TREE_VALUE (t);
+ alias_id = pe->name;
+ id = pe->value;
- if (TREE_VALUE (t) == NULL)
+ if (id == NULL)
continue;
- decl = build_decl (FUNCTION_DECL, alias_id, default_function_type);
+ decl = build_decl (UNKNOWN_LOCATION,
+ FUNCTION_DECL, alias_id, default_function_type);
DECL_ARTIFICIAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
assemble_alias (decl, value);
}
else
- pending_weaks = tree_cons (name, value, pending_weaks);
+ {
+ pending_weak *pe;
+ pe = VEC_safe_push (pending_weak, gc, pending_weaks, NULL);
+ pe->name = name;
+ pe->value = value;
+ }
}
#else
void
if (t != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of %<#pragma redefine_extname%>");
- if (!flag_mudflap && !targetm.handle_pragma_redefine_extname)
- {
- if (warn_unknown_pragmas > in_system_header)
- warning (OPT_Wunknown_pragmas,
- "#pragma redefine_extname not supported on this target");
- return;
- }
-
decl = identifier_global_value (oldname);
if (decl
&& (TREE_PUBLIC (decl) || DECL_EXTERNAL (decl))
"conflict with previous #pragma redefine_extname");
return;
}
-
+
pending_redefine_extname
= tree_cons (oldname, newname, pending_redefine_extname);
}
*p = TREE_CHAIN (t);
/* If we already have an asmname, #pragma redefine_extname is
- ignored (with a warning if it conflicts). */
+ ignored (with a warning if it conflicts). */
if (asmname)
{
if (strcmp (TREE_STRING_POINTER (asmname),
const char *id = IDENTIFIER_POINTER (DECL_NAME (decl));
size_t ilen = IDENTIFIER_LENGTH (DECL_NAME (decl));
-
+
char *newname = (char *) alloca (plen + ilen + 1);
memcpy (newname, prefix, plen);
#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 (int, heap) *visstack;
+
+/* Push the visibility indicated by STR onto the top of the #pragma
+ visibility stack. KIND is 0 for #pragma GCC visibility, 1 for
+ C++ namespace with visibility attribute and 2 for C++ builtin
+ ABI namespace. push_visibility/pop_visibility calls must have
+ matching KIND, it is not allowed to push visibility using one
+ KIND and pop using a different one. */
+
+void
+push_visibility (const char *str, int kind)
+{
+ VEC_safe_push (int, heap, visstack,
+ ((int) default_visibility) | (kind << 8));
+ 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. Return true if
+ successful. */
+
+bool
+pop_visibility (int kind)
+{
+ if (!VEC_length (int, visstack))
+ return false;
+ if ((VEC_last (int, visstack) >> 8) != kind)
+ return false;
+ default_visibility
+ = (enum symbol_visibility) (VEC_pop (int, visstack) & 0xff);
+ visibility_options.inpragma
+ = VEC_length (int, visstack) != 0;
+ return true;
+}
/* 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)
{
tree x;
enum cpp_ttype token;
enum { bad, push, pop } action = bad;
- static VEC (visibility, heap) *visstack;
-
+
token = pragma_lex (&x);
if (token == CPP_NAME)
{
const char *op = IDENTIFIER_POINTER (x);
if (!strcmp (op, "push"))
- action = push;
+ action = push;
else if (!strcmp (op, "pop"))
- action = 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
- {
- default_visibility = VEC_pop (visibility, visstack);
- visibility_options.inpragma
- = VEC_length (visibility, visstack) != 0;
- }
- }
+ {
+ if (! pop_visibility (0))
+ GCC_BAD ("no matching push for %<#pragma GCC visibility pop%>");
+ }
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
- {
- const char *str = IDENTIFIER_POINTER (x);
- 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;
- }
- if (pragma_lex (&x) != CPP_CLOSE_PAREN)
- GCC_BAD ("missing %<(%> after %<#pragma GCC visibility push%> - ignored");
- }
+ {
+ 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), 0);
+ 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%>");
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 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);
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
cpplib.h in almost everywhere. */
{
unsigned id;
- VEC_safe_push (pragma_handler, heap, registered_pragmas, &handler);
- id = VEC_length (pragma_handler, registered_pragmas);
- id += PRAGMA_FIRST_EXTERNAL - 1;
+ if (flag_preprocess_only)
+ {
+ pragma_ns_name ns_name;
+
+ if (!allow_expansion)
+ return;
+
+ ns_name.space = space;
+ ns_name.name = name;
+ VEC_safe_push (pragma_ns_name, heap, registered_pp_pragmas, &ns_name);
+ id = VEC_length (pragma_ns_name, registered_pp_pragmas);
+ id += PRAGMA_FIRST_EXTERNAL - 1;
+ }
+ else
+ {
+ VEC_safe_push (pragma_handler, heap, registered_pragmas, &handler);
+ id = VEC_length (pragma_handler, registered_pragmas);
+ id += PRAGMA_FIRST_EXTERNAL - 1;
- /* The C++ front end allocates 6 bits in cp_token; the C front end
- allocates 7 bits in c_token. At present this is sufficient. */
- gcc_assert (id < 64);
+ /* The C++ front end allocates 6 bits in cp_token; the C front end
+ allocates 7 bits in c_token. At present this is sufficient. */
+ gcc_assert (id < 64);
+ }
cpp_register_deferred_pragma (parse_in, space, name, id,
allow_expansion, false);
void
init_pragma (void)
{
- if (flag_openmp && !flag_preprocess_only)
- {
- 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 },
- { "threadprivate", PRAGMA_OMP_THREADPRIVATE }
- };
-
+ if (flag_openmp)
+ {
const int n_omp_pragmas = sizeof (omp_pragmas) / sizeof (*omp_pragmas);
int i;
omp_pragmas[i].id, true, true);
}
- cpp_register_deferred_pragma (parse_in, "GCC", "pch_preprocess",
- PRAGMA_GCC_PCH_PREPROCESS, false, false);
+ if (!flag_preprocess_only)
+ cpp_register_deferred_pragma (parse_in, "GCC", "pch_preprocess",
+ PRAGMA_GCC_PCH_PREPROCESS, false, false);
#ifdef HANDLE_PRAGMA_PACK
#ifdef HANDLE_PRAGMA_PACK_WITH_EXPANSION
#endif
c_register_pragma ("GCC", "diagnostic", handle_pragma_diagnostic);
+ 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
+
+ /* Allow plugins to register their own pragmas. */
+ invoke_plugin_callbacks (PLUGIN_PRAGMAS, NULL);
}
#include "gt-c-pragma.h"
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