/*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This file is internal to the rbug protocol code, and contains asorted
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* features needed by the code.
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*/
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#ifndef _RBUG_INTERNAL_H_
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#define _RBUG_INTERNAL_H_
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#include "rbug_proto.h"
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#include "util/u_memory.h"
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#include "util/u_debug.h"
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#include <errno.h>
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int rbug_connection_send_start(struct rbug_connection *con, enum rbug_opcode opcode, uint32_t length);
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int rbug_connection_write(struct rbug_connection *con, void *data, uint32_t size);
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int rbug_connection_send_finish(struct rbug_connection *con, uint32_t *c);
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/**
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* Only works with multiples of 2
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*/
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#define PAD(from, to) \
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do { \
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from = (from + to - 1) & ~(to - 1); \
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} while(0)
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#define LEN(size) \
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do { \
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PAD(__len, size); \
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__len += size; \
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} while(0)
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#define LEN_ARRAY(size, name) \
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do { \
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LEN(4); \
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PAD(__len, size); \
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__len += size * name##_len; \
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} while(0)
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#define WRITE(size, type, name) \
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do { \
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PAD(__pos, size); \
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*((type *)(&__data[__pos])) = name; \
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__pos += size; \
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} while(0)
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#define WRITE_ARRAY(size, type, name) \
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do { \
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WRITE(4, uint32_t, name##_len); \
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PAD(__pos, size); \
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memcpy(&__data[__pos], name, size * name##_len); \
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__pos += size * name##_len; \
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} while(0)
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#define READ(size, type, name) \
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do { \
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PAD(pos, size); \
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pos += size; \
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if (pos > len) \
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break; \
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ret->name = *((type *)(&data[pos - size])); \
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} while(0)
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#define READ_ARRAY(size, type, name) \
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do { \
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READ(4, uint32_t, name##_len); \
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if (pos > len) \
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break; \
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PAD(pos, size); \
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pos += size * ret->name##_len; \
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if (pos > len) \
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break; \
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ret->name = (type *)&data[pos - size * ret->name##_len]; \
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} while(0)
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#endif
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