107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
|
/*
|
||
|
|
* (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 */
|