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/*
* Copyright 2009 VMware, Inc.
* 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
* on 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
* VMWARE 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.
*/
/*
* This file is internal to the rbug protocol code, and contains asorted
* features needed by the code.
*/
#ifndef _RBUG_INTERNAL_H_
#define _RBUG_INTERNAL_H_
#include "rbug_proto.h"
#include "util/u_memory.h"
#include "util/u_debug.h"
#include <errno.h>
int rbug_connection_send_start(struct rbug_connection *con, enum rbug_opcode opcode, uint32_t length);
int rbug_connection_write(struct rbug_connection *con, void *data, uint32_t size);
int rbug_connection_send_finish(struct rbug_connection *con, uint32_t *c);
/**
* Only works with multiples of 2
*/
#define PAD(from, to) \
do { \
from = (from + to - 1) & ~(to - 1); \
} while(0)
#define LEN(size) \
do { \
PAD(__len, size); \
__len += size; \
} while(0)
#define LEN_ARRAY(size, name) \
do { \
LEN(4); \
PAD(__len, size); \
__len += size * name##_len; \
} while(0)
#define WRITE(size, type, name) \
do { \
PAD(__pos, size); \
*((type *)(&__data[__pos])) = name; \
__pos += size; \
} while(0)
#define WRITE_ARRAY(size, type, name) \
do { \
WRITE(4, uint32_t, name##_len); \
PAD(__pos, size); \
memcpy(&__data[__pos], name, size * name##_len); \
__pos += size * name##_len; \
} while(0)
#define READ(size, type, name) \
do { \
PAD(pos, size); \
pos += size; \
if (pos > len) \
break; \
ret->name = *((type *)(&data[pos - size])); \
} while(0)
#define READ_ARRAY(size, type, name) \
do { \
READ(4, uint32_t, name##_len); \
if (pos > len) \
break; \
PAD(pos, size); \
pos += size * ret->name##_len; \
if (pos > len) \
break; \
ret->name = (type *)&data[pos - size * ret->name##_len]; \
} while(0)
#endif
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