ref: 64d062acdb9ed71cc251c69a08ee03e6c5bfcaaf
dir: /sys/src/9/xen/xen-public/gcov.h/
/******************************************************************************
* gcov.h
*
* Coverage structures exported by Xen.
* Structure is different from Gcc one.
*
* 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Copyright (c) 2013, Citrix Systems R&D Ltd.
*/
#ifndef __XEN_PUBLIC_GCOV_H__
#define __XEN_PUBLIC_GCOV_H__ __XEN_PUBLIC_GCOV_H__
#define XENCOV_COUNTERS 5
#define XENCOV_TAG_BASE 0x58544300u
#define XENCOV_TAG_FILE (XENCOV_TAG_BASE+0x46u)
#define XENCOV_TAG_FUNC (XENCOV_TAG_BASE+0x66u)
#define XENCOV_TAG_COUNTER(n) (XENCOV_TAG_BASE+0x30u+((n)&0xfu))
#define XENCOV_TAG_END (XENCOV_TAG_BASE+0x2eu)
#define XENCOV_IS_TAG_COUNTER(n) \
((n) >= XENCOV_TAG_COUNTER(0) && (n) < XENCOV_TAG_COUNTER(XENCOV_COUNTERS))
#define XENCOV_COUNTER_NUM(n) ((n)-XENCOV_TAG_COUNTER(0))
/*
* The main structure for the blob is
* BLOB := FILE.. END
* FILE := TAG_FILE VERSION STAMP FILENAME COUNTERS FUNCTIONS
* FILENAME := LEN characters
* characters are padded to 32 bit
* LEN := 32 bit value
* COUNTERS := TAG_COUNTER(n) NUM COUNTER..
* NUM := 32 bit valie
* COUNTER := 64 bit value
* FUNCTIONS := TAG_FUNC NUM FUNCTION..
* FUNCTION := IDENT CHECKSUM NUM_COUNTERS
*
* All tagged structures are aligned to 8 bytes
*/
/**
* File information
* Prefixed with XENCOV_TAG_FILE and a string with filename
* Aligned to 8 bytes
*/
struct xencov_file
{
uint32_t tag; /* XENCOV_TAG_FILE */
uint32_t version;
uint32_t stamp;
uint32_t fn_len;
char filename[1];
};
/**
* Counters information
* Prefixed with XENCOV_TAG_COUNTER(n) where n is 0..(XENCOV_COUNTERS-1)
* Aligned to 8 bytes
*/
struct xencov_counter
{
uint32_t tag; /* XENCOV_TAG_COUNTER(n) */
uint32_t num;
uint64_t values[1];
};
/**
* Information for each function
* Number of counter is equal to the number of counter structures got before
*/
struct xencov_function
{
uint32_t ident;
uint32_t checksum;
uint32_t num_counters[1];
};
/**
* Information for all functions
* Aligned to 8 bytes
*/
struct xencov_functions
{
uint32_t tag; /* XENCOV_TAG_FUNC */
uint32_t num;
struct xencov_function xencov_function[1];
};
/**
* Terminator
*/
struct xencov_end
{
uint32_t tag; /* XENCOV_TAG_END */
};
#endif /* __XEN_PUBLIC_GCOV_H__ */