172 lines
4.2 KiB
C++
172 lines
4.2 KiB
C++
/* Generic plugin context
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Copyright (C) 2020-2022 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include <cc1plugin-config.h>
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#undef PACKAGE_NAME
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#undef PACKAGE_STRING
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#undef PACKAGE_TARNAME
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#undef PACKAGE_VERSION
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#include "../gcc/config.h"
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#undef PACKAGE_NAME
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#undef PACKAGE_STRING
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#undef PACKAGE_TARNAME
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#undef PACKAGE_VERSION
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#include "gcc-plugin.h"
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#include "system.h"
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#include "coretypes.h"
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#include "stringpool.h"
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#include "hash-set.h"
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#include "diagnostic.h"
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#include "langhooks.h"
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#include "langhooks-def.h"
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#include "gcc-interface.h"
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#include "context.hh"
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#include "marshall.hh"
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#ifdef __GNUC__
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#pragma GCC visibility push(default)
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#endif
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int plugin_is_GPL_compatible;
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#ifdef __GNUC__
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#pragma GCC visibility pop
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#endif
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cc1_plugin::plugin_context *cc1_plugin::current_context;
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// This is put into the lang hooks when the plugin starts.
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static void
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plugin_print_error_function (diagnostic_context *context, const char *file,
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diagnostic_info *diagnostic)
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{
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if (current_function_decl != NULL_TREE
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&& DECL_NAME (current_function_decl) != NULL_TREE
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&& strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)),
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GCC_FE_WRAPPER_FUNCTION) == 0)
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return;
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lhd_print_error_function (context, file, diagnostic);
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}
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location_t
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cc1_plugin::plugin_context::get_location_t (const char *filename,
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unsigned int line_number)
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{
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if (filename == NULL)
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return UNKNOWN_LOCATION;
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filename = intern_filename (filename);
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linemap_add (line_table, LC_ENTER, false, filename, line_number);
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location_t loc = linemap_line_start (line_table, line_number, 0);
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linemap_add (line_table, LC_LEAVE, false, NULL, 0);
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return loc;
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}
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// Add a file name to FILE_NAMES and return the canonical copy.
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const char *
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cc1_plugin::plugin_context::intern_filename (const char *filename)
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{
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const char **slot = file_names.find_slot (filename, INSERT);
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if (*slot == NULL)
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{
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/* The file name must live as long as the line map, which
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effectively means as long as this compilation. So, we copy
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the string here but never free it. */
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*slot = xstrdup (filename);
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}
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return *slot;
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}
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void
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cc1_plugin::plugin_context::mark ()
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{
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for (const auto &item : address_map)
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{
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ggc_mark (item->decl);
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ggc_mark (item->address);
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}
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for (const auto &item : preserved)
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ggc_mark (&item);
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}
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// Perform GC marking.
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static void
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gc_mark (void *, void *)
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{
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if (cc1_plugin::current_context != NULL)
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cc1_plugin::current_context->mark ();
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}
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void
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cc1_plugin::generic_plugin_init (struct plugin_name_args *plugin_info,
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unsigned int version)
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{
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long fd = -1;
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for (int i = 0; i < plugin_info->argc; ++i)
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{
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if (strcmp (plugin_info->argv[i].key, "fd") == 0)
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{
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char *tail;
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errno = 0;
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fd = strtol (plugin_info->argv[i].value, &tail, 0);
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if (*tail != '\0' || errno != 0)
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fatal_error (input_location,
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"%s: invalid file descriptor argument to plugin",
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plugin_info->base_name);
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break;
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}
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}
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if (fd == -1)
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fatal_error (input_location,
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"%s: required plugin argument %<fd%> is missing",
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plugin_info->base_name);
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current_context = new plugin_context (fd);
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// Handshake.
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cc1_plugin::protocol_int h_version;
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if (!current_context->require ('H')
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|| ! ::cc1_plugin::unmarshall (current_context, &h_version))
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fatal_error (input_location,
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"%s: handshake failed", plugin_info->base_name);
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if (h_version != version)
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fatal_error (input_location,
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"%s: unknown version in handshake", plugin_info->base_name);
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register_callback (plugin_info->base_name, PLUGIN_GGC_MARKING,
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gc_mark, NULL);
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lang_hooks.print_error_function = plugin_print_error_function;
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}
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