1/****************************************************************************** 2 * gcov.h 3 * 4 * Coverage structures exported by Xen. 5 * Structure is different from Gcc one. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to 9 * deal in the Software without restriction, including without limitation the 10 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 11 * sell copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 * 25 * Copyright (c) 2013, Citrix Systems R&D Ltd. 26 */ 27 28#ifndef __XEN_PUBLIC_GCOV_H__ 29#define __XEN_PUBLIC_GCOV_H__ __XEN_PUBLIC_GCOV_H__ 30 31#define XENCOV_COUNTERS 5 32#define XENCOV_TAG_BASE 0x58544300u 33#define XENCOV_TAG_FILE (XENCOV_TAG_BASE+0x46u) 34#define XENCOV_TAG_FUNC (XENCOV_TAG_BASE+0x66u) 35#define XENCOV_TAG_COUNTER(n) (XENCOV_TAG_BASE+0x30u+((n)&0xfu)) 36#define XENCOV_TAG_END (XENCOV_TAG_BASE+0x2eu) 37#define XENCOV_IS_TAG_COUNTER(n) \ 38 ((n) >= XENCOV_TAG_COUNTER(0) && (n) < XENCOV_TAG_COUNTER(XENCOV_COUNTERS)) 39#define XENCOV_COUNTER_NUM(n) ((n)-XENCOV_TAG_COUNTER(0)) 40 41/* 42 * The main structure for the blob is 43 * BLOB := FILE.. END 44 * FILE := TAG_FILE VERSION STAMP FILENAME COUNTERS FUNCTIONS 45 * FILENAME := LEN characters 46 * characters are padded to 32 bit 47 * LEN := 32 bit value 48 * COUNTERS := TAG_COUNTER(n) NUM COUNTER.. 49 * NUM := 32 bit valie 50 * COUNTER := 64 bit value 51 * FUNCTIONS := TAG_FUNC NUM FUNCTION.. 52 * FUNCTION := IDENT CHECKSUM NUM_COUNTERS 53 * 54 * All tagged structures are aligned to 8 bytes 55 */ 56 57/** 58 * File information 59 * Prefixed with XENCOV_TAG_FILE and a string with filename 60 * Aligned to 8 bytes 61 */ 62struct xencov_file 63{ 64 uint32_t tag; /* XENCOV_TAG_FILE */ 65 uint32_t version; 66 uint32_t stamp; 67 uint32_t fn_len; 68 char filename[1]; 69}; 70 71 72/** 73 * Counters information 74 * Prefixed with XENCOV_TAG_COUNTER(n) where n is 0..(XENCOV_COUNTERS-1) 75 * Aligned to 8 bytes 76 */ 77struct xencov_counter 78{ 79 uint32_t tag; /* XENCOV_TAG_COUNTER(n) */ 80 uint32_t num; 81 uint64_t values[1]; 82}; 83 84/** 85 * Information for each function 86 * Number of counter is equal to the number of counter structures got before 87 */ 88struct xencov_function 89{ 90 uint32_t ident; 91 uint32_t checksum; 92 uint32_t num_counters[1]; 93}; 94 95/** 96 * Information for all functions 97 * Aligned to 8 bytes 98 */ 99struct xencov_functions 100{ 101 uint32_t tag; /* XENCOV_TAG_FUNC */ 102 uint32_t num; 103 struct xencov_function xencov_function[1]; 104}; 105 106/** 107 * Terminator 108 */ 109struct xencov_end 110{ 111 uint32_t tag; /* XENCOV_TAG_END */ 112}; 113 114#endif /* __XEN_PUBLIC_GCOV_H__ */ 115 116