| /* |
| * 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 <string.h> |
| #include "remap.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); |
| } |
| } |
| } |