src/gallium/auxiliary/rbug/rbug_internal.h

   1 /*
   2  * Copyright 2009 VMware, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * This file is internal to the rbug protocol code, and contains asorted
  27  * features needed by the code.
  28  */
  29
  30 #ifndef _RBUG_INTERNAL_H_
  31 #define _RBUG_INTERNAL_H_
  32
  33 #include "rbug/rbug_proto.h"
  34
  35 #include "util/u_memory.h"
  36 #include "util/u_debug.h"
  37 #include <errno.h>
  38
  39 int rbug_connection_send_start(struct rbug_connection *con, enum rbug_opcode opcode, uint32_t length);
  40 int rbug_connection_write(struct rbug_connection *con, void *data, uint32_t size);
  41 int rbug_connection_send_finish(struct rbug_connection *con, uint32_t *c);
  42
  43 /**
  44  * Only works with multiples of 2
  45  */
  46 #define PAD(from, to)                       \
  47 do {                                        \
  48         from = (from + to - 1) & ~(to - 1); \
  49 } while(0)
  50
  51 #define LEN(size)         \
  52 do {                      \
  53         PAD(__len, size); \
  54         __len += size;    \
  55 } while(0)
  56
  57 #define LEN_ARRAY(size, name)       \
  58 do {                                \
  59         LEN(4);                     \
  60         PAD(__len, size);           \
  61         __len += size * name##_len; \
  62 } while(0)
  63
  64 #define WRITE(size, type, name)             \
  65 do {                                        \
  66         PAD(__pos, size);                   \
  67         *((type *)(&__data[__pos])) = name; \
  68         __pos += size;                      \
  69 } while(0)
  70
  71 #define WRITE_ARRAY(size, type, name)                    \
  72 do {                                                     \
  73         WRITE(4, uint32_t, name##_len);                  \
  74         PAD(__pos, size);                                \
  75         memcpy(&__data[__pos], name, size * name##_len); \
  76         __pos += size * name##_len;                      \
  77 } while(0)
  78
  79 #define READ(size, type, name)                      \
  80 do {                                                \
  81         PAD(pos, size);                             \
  82         pos += size;                                \
  83         if (pos > len)                              \
  84                 break;                              \
  85         ret->name = *((type *)(&data[pos - size])); \
  86 } while(0)
  87
  88 #define READ_ARRAY(size, type, name)                             \
  89 do {                                                             \
  90         READ(4, uint32_t, name##_len);                           \
  91         if (pos > len)                                           \
  92                 break;                                           \
  93         PAD(pos, size);                                          \
  94         pos += size * ret->name##_len;                           \
  95         if (pos > len)                                           \
  96                 break;                                           \
  97         ret->name = (type *)&data[pos - size * ret->name##_len]; \
  98 } while(0)
  99
 100 #endif