/* * (C) Copyright IBM Corporation 2005, 2006 * All Rights Reserved. * * 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, sub license, * 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 (including the next * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL * IBM, * AND/OR THEIR SUPPLIERS 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 indirect_table.h * * \author Ian Romanick <idr@us.ibm.com> */ #ifndef INDIRECT_TABLE_H #define INDIRECT_TABLE_H #include <inttypes.h> /** */ struct __glXDispatchInfo { /** * Number of significant bits in the protocol opcode. Opcodes with values * larger than ((1 << bits) - 1) are invalid. */ unsigned bits; /** */ const int_fast16_t * dispatch_tree; /** * Array of protocol decode and dispatch functions index by the opcode * search tree (i.e., \c dispatch_tree). The first element in each pair * is the non-byte-swapped version, and the second element is the * byte-swapped version. */ const void *(*dispatch_functions)[2]; /** * Pointer to size validation data. This table is indexed with the same * value as ::dispatch_functions. * * The first element in the pair is the size, in bytes, of the fixed-size * portion of the protocol. * * For opcodes that have a variable-size portion, the second value is an * index in \c size_func_table to calculate that size. If there is no * variable-size portion, this index will be ~0. * * \note * If size checking is not to be performed on this type of protocol * data, this pointer will be \c NULL. */ const int_fast16_t (*size_table)[2]; /** * Array of functions used to calculate the variable-size portion of * protocol messages. Indexed by the second element of the entries * in \c ::size_table. * * \note * If size checking is not to be performed on this type of protocol * data, this pointer will be \c NULL. */ const gl_proto_size_func *size_func_table; }; /** * Sentinel value for an empty leaf in the \c dispatch_tree. */ #define EMPTY_LEAF INT_FAST16_MIN /** * Declare the index \c x as a leaf index. */ #define LEAF(x) -x /** * Determine if an index is a leaf index. */ #define IS_LEAF_INDEX(x) ((x) <= 0) extern const struct __glXDispatchInfo Single_dispatch_info; extern const struct __glXDispatchInfo Render_dispatch_info; extern const struct __glXDispatchInfo VendorPriv_dispatch_info; #endif /* INDIRECT_TABLE_H */