/* * Mesa 3-D graphics library * * Copyright (C) 2009 Chia-I Wu <olv@0xlab.org> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ /** * \file remap.c * Remap table management. * * Entries in the dispatch table are either static or dynamic. The * dispatch table is shared by mesa core and glapi. When they are * built separately, it is possible that a static entry in mesa core * is dynamic, or assigned a different static offset, in glapi. The * remap table is in charge of mapping a static entry in mesa core to * a dynamic entry, or the corresponding static entry, in glapi. */ #include <stdbool.h> #include "remap.h" #include "imports.h" #include "glapi/glapi.h" #define MAX_ENTRY_POINTS 16 #define need_MESA_remap_table #include "main/remap_helper.h" #include "errors.h" /* this is global for quick access */ int driDispatchRemapTable[driDispatchRemapTable_size]; /** * Map a function by its spec. The function will be added to glapi, * and the dispatch offset will be returned. * * \param spec a '\0'-separated string array specifying a function. * It begins with the parameter signature of the function, * followed by the names of the entry points. An empty entry * point name terminates the array. * * \return the offset of the (re-)mapped function in the dispatch * table, or -1. */ static int map_function_spec(const char *spec) { const char *signature; const char *names[MAX_ENTRY_POINTS + 1]; int num_names = 0; if (!spec) return -1; signature = spec; spec += strlen(spec) + 1; /* spec is terminated by an empty string */ while (*spec) { names[num_names] = spec; num_names++; if (num_names >= MAX_ENTRY_POINTS) break; spec += strlen(spec) + 1; } if (!num_names) return -1; names[num_names] = NULL; /* add the entry points to the dispatch table */ return _glapi_add_dispatch(names, signature); } /** * Initialize the remap table. This is called in one_time_init(). * The remap table needs to be initialized before calling the * CALL/GET/SET macros defined in main/dispatch.h. */ void _mesa_init_remap_table(void) { static bool initialized = false; GLint i; if (initialized) return; initialized = true; /* initialize the MESA_remap_table_functions table */ for (i = 0; i < driDispatchRemapTable_size; i++) { int offset; const char *spec; /* sanity check */ assert(i == MESA_remap_table_functions[i].remap_index); spec = _mesa_function_pool + MESA_remap_table_functions[i].pool_index; offset = map_function_spec(spec); /* store the dispatch offset in the MESA_remap_table_functions table */ driDispatchRemapTable[i] = offset; if (offset < 0) { const char *name = spec + strlen(spec) + 1; _mesa_warning(NULL, "failed to remap %s", name); } } }