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Diffstat (limited to 'lib/gcc/mipsel-linux-android/4.6/gcov-src/gcov-io.h')
| -rw-r--r-- | lib/gcc/mipsel-linux-android/4.6/gcov-src/gcov-io.h | 968 |
1 files changed, 968 insertions, 0 deletions
diff --git a/lib/gcc/mipsel-linux-android/4.6/gcov-src/gcov-io.h b/lib/gcc/mipsel-linux-android/4.6/gcov-src/gcov-io.h new file mode 100644 index 0000000..fe0ae20 --- /dev/null +++ b/lib/gcc/mipsel-linux-android/4.6/gcov-src/gcov-io.h @@ -0,0 +1,968 @@ +/* File format for coverage information + Copyright (C) 1996, 1997, 1998, 2000, 2002, + 2003, 2004, 2005, 2008, 2009 Free Software Foundation, Inc. + Contributed by Bob Manson <manson@cygnus.com>. + Completely remangled by Nathan Sidwell <nathan@codesourcery.com>. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + + +/* Coverage information is held in two files. A notes file, which is + generated by the compiler, and a data file, which is generated by + the program under test. Both files use a similar structure. We do + not attempt to make these files backwards compatible with previous + versions, as you only need coverage information when developing a + program. We do hold version information, so that mismatches can be + detected, and we use a format that allows tools to skip information + they do not understand or are not interested in. + + Numbers are recorded in the 32 bit unsigned binary form of the + endianness of the machine generating the file. 64 bit numbers are + stored as two 32 bit numbers, the low part first. Strings are + padded with 1 to 4 NUL bytes, to bring the length up to a multiple + of 4. The number of 4 bytes is stored, followed by the padded + string. Zero length and NULL strings are simply stored as a length + of zero (they have no trailing NUL or padding). + + int32: byte3 byte2 byte1 byte0 | byte0 byte1 byte2 byte3 + int64: int32:low int32:high + string: int32:0 | int32:length char* char:0 padding + padding: | char:0 | char:0 char:0 | char:0 char:0 char:0 + item: int32 | int64 | string + + The basic format of the files is + + file : int32:magic int32:version int32:stamp record* + + The magic ident is different for the notes and the data files. The + magic ident is used to determine the endianness of the file, when + reading. The version is the same for both files and is derived + from gcc's version number. The stamp value is used to synchronize + note and data files and to synchronize merging within a data + file. It need not be an absolute time stamp, merely a ticker that + increments fast enough and cycles slow enough to distinguish + different compile/run/compile cycles. + + Although the ident and version are formally 32 bit numbers, they + are derived from 4 character ASCII strings. The version number + consists of the single character major version number, a two + character minor version number (leading zero for versions less than + 10), and a single character indicating the status of the release. + That will be 'e' experimental, 'p' prerelease and 'r' for release. + Because, by good fortune, these are in alphabetical order, string + collating can be used to compare version strings. Be aware that + the 'e' designation will (naturally) be unstable and might be + incompatible with itself. For gcc 3.4 experimental, it would be + '304e' (0x33303465). When the major version reaches 10, the + letters A-Z will be used. Assuming minor increments releases every + 6 months, we have to make a major increment every 50 years. + Assuming major increments releases every 5 years, we're ok for the + next 155 years -- good enough for me. + + A record has a tag, length and variable amount of data. + + record: header data + header: int32:tag int32:length + data: item* + + Records are not nested, but there is a record hierarchy. Tag + numbers reflect this hierarchy. Tags are unique across note and + data files. Some record types have a varying amount of data. The + LENGTH is the number of 4bytes that follow and is usually used to + determine how much data. The tag value is split into 4 8-bit + fields, one for each of four possible levels. The most significant + is allocated first. Unused levels are zero. Active levels are + odd-valued, so that the LSB of the level is one. A sub-level + incorporates the values of its superlevels. This formatting allows + you to determine the tag hierarchy, without understanding the tags + themselves, and is similar to the standard section numbering used + in technical documents. Level values [1..3f] are used for common + tags, values [41..9f] for the notes file and [a1..ff] for the data + file. + + The basic block graph file contains the following records + note: unit function-graph* + unit: header int32:checksum string:source + function-graph: announce_function basic_blocks {arcs | lines}* + announce_function: header int32:ident + int32:lineno_checksum int32:cfg_checksum + string:name string:source int32:lineno + basic_block: header int32:flags* + arcs: header int32:block_no arc* + arc: int32:dest_block int32:flags + lines: header int32:block_no line* + int32:0 string:NULL + line: int32:line_no | int32:0 string:filename + + The BASIC_BLOCK record holds per-bb flags. The number of blocks + can be inferred from its data length. There is one ARCS record per + basic block. The number of arcs from a bb is implicit from the + data length. It enumerates the destination bb and per-arc flags. + There is one LINES record per basic block, it enumerates the source + lines which belong to that basic block. Source file names are + introduced by a line number of 0, following lines are from the new + source file. The initial source file for the function is NULL, but + the current source file should be remembered from one LINES record + to the next. The end of a block is indicated by an empty filename + - this does not reset the current source file. Note there is no + ordering of the ARCS and LINES records: they may be in any order, + interleaved in any manner. The current filename follows the order + the LINES records are stored in the file, *not* the ordering of the + blocks they are for. + + The data file contains the following records. + data: {unit function-data* summary:object summary:program*}* + unit: header int32:checksum + function-data: announce_function arc_counts + announce_function: header int32:ident + int32:lineno_checksum int32:cfg_checksum + arc_counts: header int64:count* + summary: int32:checksum {count-summary}GCOV_COUNTERS + count-summary: int32:num int32:runs int64:sum + int64:max int64:sum_max + + The ANNOUNCE_FUNCTION record is the same as that in the note file, + but without the source location. The ARC_COUNTS gives the counter + values for those arcs that are instrumented. The SUMMARY records + give information about the whole object file and about the whole + program. The checksum is used for whole program summaries, and + disambiguates different programs which include the same + instrumented object file. There may be several program summaries, + each with a unique checksum. The object summary's checksum is zero. + Note that the data file might contain information from several runs + concatenated, or the data might be merged. + + This file is included by both the compiler, gcov tools and the + runtime support library libgcov. IN_LIBGCOV and IN_GCOV are used to + distinguish which case is which. If IN_LIBGCOV is nonzero, + libgcov is being built. If IN_GCOV is nonzero, the gcov tools are + being built. Otherwise the compiler is being built. IN_GCOV may be + positive or negative. If positive, we are compiling a tool that + requires additional functions (see the code for knowledge of what + those functions are). */ + +#ifndef GCC_GCOV_IO_H +#define GCC_GCOV_IO_H + +#ifdef __KERNEL__ +#ifndef __GCOV_KERNEL__ +#define __GCOV_KERNEL__ +#endif /* __GCOV_KERNEL__ */ +#endif /* __KERNEL__ */ + +#ifdef __GCOV_KERNEL__ +#define GCOV_LINKAGE /* nothing */ + +/* We need the definitions for + BITS_PER_UNIT and + LONG_LONG_TYPE_SIZE + They are defined in gcc/defaults.h and gcc/config/<arch_depend_files> + (like, gcc/config/i386/i386.h). And it can be overridden by setting + in build scripts. Here I hardcoded the value for x86. + Todo: using a program to auto-generate the vaules in build time. */ +#define BITS_PER_UNIT 8 +#define LONG_LONG_TYPE_SIZE 64 + +/* There are many gcc_assertions. Set the vaule to 1 if we want a warning + message if the assertion fails. */ +#ifndef ENABLE_ASSERT_CHECKING +#define ENABLE_ASSERT_CHECKING 1 +#endif + +#include <linux/fs.h> +#endif /* __GCOV_KERNEL__ */ + +/* Wrappers to the file operations. */ +#ifndef __GCOV_KERNEL__ +# define _GCOV_FILE FILE +# define _GCOV_fclose fclose +# define _GCOV_ftell ftell +# define _GCOV_fseek fseek +# define _GCOV_ftruncate ftruncate +# define _GCOV_fread fread +# define _GCOV_fwrite fwrite +# define _GCOV_fread fread +# define _GCOV_fileno fileno +#else /* __GCOV_KERNEL__ */ +/* In Linux kernel mode, a virtual file is used for file operations. */ +struct gcov_info; +typedef struct { + long size; /* size of buf */ + long count; /* element written into buf */ + struct gcov_info *info; + char buf[0]; +} gcov_kernel_vfile; + +# define _GCOV_FILE gcov_kernel_vfile + +/* gcc_assert() prints out a warning if the check fails. It + will not abort. */ +#if ENABLE_ASSERT_CHECKING +# define gcc_assert(EXPR) \ + ((void)(!(EXPR) ? printk (KERN_WARNING \ + "GCOV assertion fails: func=%s line=%d\n", \ + __FUNCTION__, __LINE__), 0 : 0)) +#else +# define gcc_assert(EXPR) ((void)(0 && (EXPR))) +#endif + +/* Wrappers to the file operations. */ +# define _GCOV_fclose kernel_file_fclose +# define _GCOV_ftell kernel_file_ftell +# define _GCOV_fseek kernel_file_fseek +# define _GCOV_ftruncate kernel_file_ftruncate +# define _GCOV_fread kernel_file_fread +# define _GCOV_fwrite kernel_file_fwrite +# define _GCOV_fileno kernel_file_fileno + +/* Declarations for virtual files operations. */ +extern int kernel_file_fclose (gcov_kernel_vfile *); +extern long kernel_file_ftell (gcov_kernel_vfile *); +extern int kernel_file_fseek (gcov_kernel_vfile *, long, int); +extern int kernel_file_ftruncate (gcov_kernel_vfile *, off_t); +extern int kernel_file_fread (void *, size_t, size_t, + gcov_kernel_vfile *); +extern int kernel_file_fwrite (const void *, size_t, size_t, + gcov_kernel_vfile *); +extern int kernel_file_fileno(gcov_kernel_vfile *); +#endif /* GCOV_KERNEL */ +#if IN_LIBGCOV + +#undef FUNC_ID_WIDTH +#undef FUNC_ID_MASK +/* About the target */ + +#if BITS_PER_UNIT == 8 +typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI))); +typedef unsigned gcov_position_t __attribute__ ((mode (SI))); +#if LONG_LONG_TYPE_SIZE > 32 +typedef signed gcov_type __attribute__ ((mode (DI))); +#define FUNC_ID_WIDTH 32 +#define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) +#else +typedef signed gcov_type __attribute__ ((mode (SI))); +#define FUNC_ID_WIDTH 16 +#define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) +#endif +#else /* BITS_PER_UNIT != 8 */ +#if BITS_PER_UNIT == 16 +typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI))); +typedef unsigned gcov_position_t __attribute__ ((mode (HI))); +#if LONG_LONG_TYPE_SIZE > 32 +typedef signed gcov_type __attribute__ ((mode (SI))); +#define FUNC_ID_WIDTH 32 +#define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) +#else +typedef signed gcov_type __attribute__ ((mode (HI))); +#define FUNC_ID_WIDTH 16 +#define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) +#endif +#else /* BITS_PER_UNIT != 16 */ +typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI))); +typedef unsigned gcov_position_t __attribute__ ((mode (QI))); +#if LONG_LONG_TYPE_SIZE > 32 +typedef signed gcov_type __attribute__ ((mode (HI))); +#define FUNC_ID_WIDTH 32 +#define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) +#else +typedef signed gcov_type __attribute__ ((mode (QI))); +#define FUNC_ID_WIDTH 16 +#define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) +#endif +#endif /* BITS_PER_UNIT == 16 */ + +#endif /* BITS_PER_UNIT == 8 */ + +#undef EXTRACT_MODULE_ID_FROM_GLOBAL_ID +#undef EXTRACT_FUNC_ID_FROM_GLOBAL_ID +#undef GEN_FUNC_GLOBAL_ID +#define EXTRACT_MODULE_ID_FROM_GLOBAL_ID(gid) \ + (gcov_unsigned_t)(((gid) >> FUNC_ID_WIDTH) & FUNC_ID_MASK) +#define EXTRACT_FUNC_ID_FROM_GLOBAL_ID(gid) \ + (gcov_unsigned_t)((gid) & FUNC_ID_MASK) +#define GEN_FUNC_GLOBAL_ID(m,f) ((((gcov_type) (m)) << FUNC_ID_WIDTH) | (f)) + + +#if defined (TARGET_POSIX_IO) +#define GCOV_LOCKED 1 +#else +#define GCOV_LOCKED 0 +#endif + +#else /* !IN_LIBGCOV */ +/* About the host */ + +typedef unsigned gcov_unsigned_t; +typedef unsigned gcov_position_t; + +/* gcov_type is typedef'd elsewhere for the compiler */ +#if IN_GCOV +#define GCOV_LINKAGE static +typedef HOST_WIDEST_INT gcov_type; +#if IN_GCOV > 0 +#include <sys/types.h> +#endif + +#define FUNC_ID_WIDTH HOST_BITS_PER_WIDE_INT/2 +#define FUNC_ID_MASK ((1L << FUNC_ID_WIDTH) - 1) +#define EXTRACT_MODULE_ID_FROM_GLOBAL_ID(gid) (unsigned)(((gid) >> FUNC_ID_WIDTH) & FUNC_ID_MASK) +#define EXTRACT_FUNC_ID_FROM_GLOBAL_ID(gid) (unsigned)((gid) & FUNC_ID_MASK) +#define FUNC_GLOBAL_ID(m,f) ((((HOST_WIDE_INT) (m)) << FUNC_ID_WIDTH) | (f) + +#else /*!IN_GCOV */ +#define GCOV_TYPE_SIZE (LONG_LONG_TYPE_SIZE > 32 ? 64 : 32) +#endif + +#if defined (HOST_HAS_F_SETLKW) +#define GCOV_LOCKED 1 +#else +#define GCOV_LOCKED 0 +#endif + +#endif /* !IN_LIBGCOV */ + +/* In gcov we want function linkage to be static. In the compiler we want + it extern, so that they can be accessed from elsewhere. In libgcov we + need these functions to be extern, so prefix them with __gcov. In + libgcov they must also be hidden so that the instance in the executable + is not also used in a DSO. */ +#if IN_LIBGCOV + +#ifndef __GCOV_KERNEL__ +#include "tconfig.h" +#endif /* __GCOV_KERNEL__ */ + +#define gcov_var __gcov_var +#define gcov_open __gcov_open +#define gcov_close __gcov_close +#define gcov_write_tag_length __gcov_write_tag_length +#define gcov_position __gcov_position +#define gcov_seek __gcov_seek +#define gcov_rewrite __gcov_rewrite +#define gcov_truncate __gcov_truncate +#define gcov_is_error __gcov_is_error +#define gcov_write_unsigned __gcov_write_unsigned +#define gcov_write_counter __gcov_write_counter +#define gcov_write_summary __gcov_write_summary +#define gcov_write_module_info __gcov_write_module_info +#define gcov_write_string __gcov_write_string +#define gcov_string_length __gcov_string_length +#define gcov_read_unsigned __gcov_read_unsigned +#define gcov_read_counter __gcov_read_counter +#define gcov_read_string __gcov_read_string +#define gcov_read_summary __gcov_read_summary +#define gcov_read_module_info __gcov_read_module_info +#define gcov_sort_n_vals __gcov_sort_n_vals +#define gcov_canonical_filename _gcov_canonical_filename +#define gcov_read_pmu_load_latency_info __gcov_read_pmu_load_latency_info +#define gcov_read_pmu_branch_mispredict_info __gcov_read_pmu_branch_mispredict_info +#define gcov_read_pmu_tool_header __gcov_read_pmu_tool_header +#define destroy_pmu_tool_header __destroy_pmu_tool_header + + +/* Poison these, so they don't accidentally slip in. */ +#pragma GCC poison gcov_write_tag gcov_write_length +#pragma GCC poison gcov_sync gcov_time gcov_magic + +#ifdef HAVE_GAS_HIDDEN +#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden"))) +#else +#define ATTRIBUTE_HIDDEN +#endif + +#else + +#define ATTRIBUTE_HIDDEN + +#endif + +#ifndef GCOV_LINKAGE +#define GCOV_LINKAGE extern +#endif + +/* File suffixes. */ +#define GCOV_DATA_SUFFIX ".gcda" +#define GCOV_NOTE_SUFFIX ".gcno" + +/* File magic. Must not be palindromes. */ +#define GCOV_DATA_MAGIC ((gcov_unsigned_t)0x67636461) /* "gcda" */ +#define GCOV_NOTE_MAGIC ((gcov_unsigned_t)0x67636e6f) /* "gcno" */ + +/* gcov-iov.h is automatically generated by the makefile from + version.c, it looks like + #define GCOV_VERSION ((gcov_unsigned_t)0x89abcdef) +*/ +#include "gcov-iov.h" + +/* Convert a magic or version number to a 4 character string. */ +#define GCOV_UNSIGNED2STRING(ARRAY,VALUE) \ + ((ARRAY)[0] = (char)((VALUE) >> 24), \ + (ARRAY)[1] = (char)((VALUE) >> 16), \ + (ARRAY)[2] = (char)((VALUE) >> 8), \ + (ARRAY)[3] = (char)((VALUE) >> 0)) + +/* The record tags. Values [1..3f] are for tags which may be in either + file. Values [41..9f] for those in the note file and [a1..ff] for + the data file. The tag value zero is used as an explicit end of + file marker -- it is not required to be present. */ + +#define GCOV_TAG_FUNCTION ((gcov_unsigned_t)0x01000000) +#define GCOV_TAG_FUNCTION_LENGTH (3) +#define GCOV_TAG_BLOCKS ((gcov_unsigned_t)0x01410000) +#define GCOV_TAG_BLOCKS_LENGTH(NUM) (NUM) +#define GCOV_TAG_BLOCKS_NUM(LENGTH) (LENGTH) +#define GCOV_TAG_ARCS ((gcov_unsigned_t)0x01430000) +#define GCOV_TAG_ARCS_LENGTH(NUM) (1 + (NUM) * 2) +#define GCOV_TAG_ARCS_NUM(LENGTH) (((LENGTH) - 1) / 2) +#define GCOV_TAG_LINES ((gcov_unsigned_t)0x01450000) +#define GCOV_TAG_COUNTER_BASE ((gcov_unsigned_t)0x01a10000) +#define GCOV_TAG_COUNTER_LENGTH(NUM) ((NUM) * 2) +#define GCOV_TAG_COUNTER_NUM(LENGTH) ((LENGTH) / 2) +#define GCOV_TAG_OBJECT_SUMMARY ((gcov_unsigned_t)0xa1000000) +#define GCOV_TAG_PROGRAM_SUMMARY ((gcov_unsigned_t)0xa3000000) +#define GCOV_TAG_SUMMARY_LENGTH \ + (1 + GCOV_COUNTERS_SUMMABLE * (2 + 3 * 2)) +#define GCOV_TAG_MODULE_INFO ((gcov_unsigned_t)0xa4000000) +#define GCOV_TAG_PMU_LOAD_LATENCY_INFO ((gcov_unsigned_t)0xa5000000) +#define GCOV_TAG_PMU_LOAD_LATENCY_LENGTH(filename) \ + (gcov_string_length (filename) + 12 + 2) +#define GCOV_TAG_PMU_BRANCH_MISPREDICT_INFO ((gcov_unsigned_t)0xa7000000) +#define GCOV_TAG_PMU_BRANCH_MISPREDICT_LENGTH(filename) \ + (gcov_string_length (filename) + 5 + 2) +#define GCOV_TAG_PMU_TOOL_HEADER ((gcov_unsigned_t)0xa9000000) + +/* Counters that are collected. */ +#define GCOV_COUNTER_ARCS 0 /* Arc transitions. */ +#define GCOV_COUNTERS_SUMMABLE 1 /* Counters which can be + summaried. */ +#define GCOV_FIRST_VALUE_COUNTER 1 /* The first of counters used for value + profiling. They must form a consecutive + interval and their order must match + the order of HIST_TYPEs in + value-prof.h. */ +#define GCOV_COUNTER_V_INTERVAL 1 /* Histogram of value inside an interval. */ +#define GCOV_COUNTER_V_POW2 2 /* Histogram of exact power2 logarithm + of a value. */ +#define GCOV_COUNTER_V_SINGLE 3 /* The most common value of expression. */ +#define GCOV_COUNTER_V_DELTA 4 /* The most common difference between + consecutive values of expression. */ + +#define GCOV_COUNTER_V_INDIR 5 /* The most common indirect address */ +#define GCOV_COUNTER_AVERAGE 6 /* Compute average value passed to the + counter. */ +#define GCOV_COUNTER_IOR 7 /* IOR of the all values passed to + counter. */ +#define GCOV_COUNTER_ICALL_TOPNV 8 /* Top N value tracking for indirect calls */ +#define GCOV_LAST_VALUE_COUNTER 8 /* The last of counters used for value + profiling. */ +#define GCOV_COUNTER_DIRECT_CALL 9 /* Direct call counts. */ +#define GCOV_COUNTER_REUSE_DIST 10 /* Reuse distance measure. */ +#define GCOV_COUNTERS 11 + +/* Number of counters used for value profiling. */ +#define GCOV_N_VALUE_COUNTERS \ + (GCOV_LAST_VALUE_COUNTER - GCOV_FIRST_VALUE_COUNTER + 1) + + /* A list of human readable names of the counters */ +#define GCOV_COUNTER_NAMES {"arcs", "interval", "pow2", "single", \ + "delta","indirect_call", "average", "ior", \ + "indirect_call_topn", "direct_call", \ + "reuse_distance"} + +#define GCOV_ICALL_TOPN_VAL 2 /* Track two hottest callees */ +#define GCOV_ICALL_TOPN_NCOUNTS 9 /* The number of counter entries per icall callsite */ + /* Names of merge functions for counters. */ +#define GCOV_MERGE_FUNCTIONS {"__gcov_merge_add", \ + "__gcov_merge_add", \ + "__gcov_merge_add", \ + "__gcov_merge_single", \ + "__gcov_merge_delta", \ + "__gcov_merge_single", \ + "__gcov_merge_add", \ + "__gcov_merge_ior", \ + "__gcov_merge_icall_topn",\ + "__gcov_merge_dc",\ + "__gcov_merge_reusedist" } + +/* Convert a counter index to a tag. */ +#define GCOV_TAG_FOR_COUNTER(COUNT) \ + (GCOV_TAG_COUNTER_BASE + ((gcov_unsigned_t)(COUNT) << 17)) +/* Convert a tag to a counter. */ +#define GCOV_COUNTER_FOR_TAG(TAG) \ + ((unsigned)(((TAG) - GCOV_TAG_COUNTER_BASE) >> 17)) +/* Check whether a tag is a counter tag. */ +#define GCOV_TAG_IS_COUNTER(TAG) \ + (!((TAG) & 0xFFFF) && GCOV_COUNTER_FOR_TAG (TAG) < GCOV_COUNTERS) + +/* The tag level mask has 1's in the position of the inner levels, & + the lsb of the current level, and zero on the current and outer + levels. */ +#define GCOV_TAG_MASK(TAG) (((TAG) - 1) ^ (TAG)) + +/* Return nonzero if SUB is an immediate subtag of TAG. */ +#define GCOV_TAG_IS_SUBTAG(TAG,SUB) \ + (GCOV_TAG_MASK (TAG) >> 8 == GCOV_TAG_MASK (SUB) \ + && !(((SUB) ^ (TAG)) & ~GCOV_TAG_MASK(TAG))) + +/* Return nonzero if SUB is at a sublevel to TAG. */ +#define GCOV_TAG_IS_SUBLEVEL(TAG,SUB) \ + (GCOV_TAG_MASK (TAG) > GCOV_TAG_MASK (SUB)) + +/* Basic block flags. */ +#define GCOV_BLOCK_UNEXPECTED (1 << 1) + +/* Arc flags. */ +#define GCOV_ARC_ON_TREE (1 << 0) +#define GCOV_ARC_FAKE (1 << 1) +#define GCOV_ARC_FALLTHROUGH (1 << 2) + +/* Structured records. */ + +/* Cumulative counter data. */ +struct gcov_ctr_summary +{ + gcov_unsigned_t num; /* number of counters. */ + gcov_unsigned_t runs; /* number of program runs */ + gcov_type sum_all; /* sum of all counters accumulated. */ + gcov_type run_max; /* maximum value on a single run. */ + gcov_type sum_max; /* sum of individual run max values. */ +}; + +/* Object & program summary record. */ +struct gcov_summary +{ + gcov_unsigned_t checksum; /* checksum of program */ + struct gcov_ctr_summary ctrs[GCOV_COUNTERS_SUMMABLE]; +}; + +#define GCOV_MODULE_UNKNOWN_LANG 0 +#define GCOV_MODULE_C_LANG 1 +#define GCOV_MODULE_CPP_LANG 2 +#define GCOV_MODULE_FORT_LANG 3 + +#define GCOV_MODULE_ASM_STMTS (1 << 16) +#define GCOV_MODULE_LANG_MASK 0xffff + +enum print_newline {no_newline, add_newline}; + +/* Source module info. The data structure is used in + both runtime and profile-use phase. Make sure to allocate + enough space for the variable length member. */ +struct gcov_module_info +{ + gcov_unsigned_t ident; + gcov_unsigned_t is_primary; /* this is overloaded to mean two things: + (1) means FDO/LIPO in instrumented binary. + (2) means IS_PRIMARY in persistent file or + memory copy used in profile-use. */ + gcov_unsigned_t is_exported; + gcov_unsigned_t lang; /* lower 16 bits encode the language, and the upper + 16 bits enocde other attributes, such as whether + any assembler is present in the source, etc. */ + char *da_filename; + char *source_filename; + gcov_unsigned_t num_quote_paths; + gcov_unsigned_t num_bracket_paths; + gcov_unsigned_t num_cpp_defines; + gcov_unsigned_t num_cpp_includes; + gcov_unsigned_t num_cl_args; + char *string_array[1]; +}; + +extern struct gcov_module_info **module_infos; +extern unsigned primary_module_id; +#define PRIMARY_MODULE_EXPORTED \ + (module_infos[0]->is_exported \ + && !((module_infos[0]->lang & GCOV_MODULE_ASM_STMTS) \ + && flag_ripa_disallow_asm_modules)) + +/* Information about the hardware performance monitoring unit. */ +struct gcov_pmu_info +{ + const char *pmu_profile_filename; /* pmu profile filename */ + const char *pmu_tool; /* canonical pmu tool options */ + gcov_unsigned_t pmu_top_n_address; /* how many top addresses to symbolize */ +}; + +/* Information about the PMU tool header. */ +typedef struct gcov_pmu_tool_header { + char *host_cpu; + char *hostname; + char *kernel_version; + char *column_header; + char *column_description; + char *full_header; +} gcov_pmu_tool_header_t; + +/* Available only for PMUs which support PEBS or IBS using pfmon + tool. If any field here is changed, the length computation in + GCOV_TAG_PMU_LOAD_LATENCY_LENGTH must be updated as well. All + percentages are multiplied by 100 to make them out of 10000 and + only integer part is kept. */ +typedef struct gcov_pmu_load_latency_info +{ + gcov_unsigned_t counts; /* raw count of samples */ + gcov_unsigned_t self; /* per 10k of total samples */ + gcov_unsigned_t cum; /* per 10k cumulative weight */ + gcov_unsigned_t lt_10; /* per 10k with latency <= 10 cycles */ + gcov_unsigned_t lt_32; /* per 10k with latency <= 32 cycles */ + gcov_unsigned_t lt_64; /* per 10k with latency <= 64 cycles */ + gcov_unsigned_t lt_256; /* per 10k with latency <= 256 cycles */ + gcov_unsigned_t lt_1024; /* per 10k with latency <= 1024 cycles */ + gcov_unsigned_t gt_1024; /* per 10k with latency > 1024 cycles */ + gcov_unsigned_t wself; /* weighted average cost of this miss in cycles */ + gcov_type code_addr; /* the actual miss address (pc+1 for Intel) */ + gcov_unsigned_t line; /* line number corresponding to this miss */ + gcov_unsigned_t discriminator; /* discriminator information for this miss */ + char *filename; /* filename corresponding to this miss */ +} gcov_pmu_ll_info_t; + +/* This structure is used during runtime as well as in gcov. */ +typedef struct load_latency_infos +{ + /* An array describing the total number of load latency fields. */ + gcov_pmu_ll_info_t **ll_array; + /* The total number of entries in the load latency array. */ + unsigned ll_count; + /* The total number of entries currently allocated in the array. + Used for bookkeeping. */ + unsigned alloc_ll_count; + /* PMU tool header */ + gcov_pmu_tool_header_t *pmu_tool_header; +} ll_infos_t; + +/* Available only for PMUs which support PEBS or IBS using pfmon + tool. If any field here is changed, the length computation in + GCOV_TAG_PMU_BR_MISPREDICT_LENGTH must be updated as well. All + percentages are multiplied by 100 to make them out of 10000 and + only integer part is kept. */ +typedef struct gcov_pmu_branch_mispredict_info +{ + gcov_unsigned_t counts; /* raw count of samples */ + gcov_unsigned_t self; /* per 10k of total samples */ + gcov_unsigned_t cum; /* per 10k cumulative weight */ + gcov_type code_addr; /* the actual mispredict address */ + gcov_unsigned_t line; /* line number corresponding to this event */ + gcov_unsigned_t discriminator; /* discriminator for this event */ + char *filename; /* filename corresponding to this event */ +} gcov_pmu_brm_info_t; + +/* This structure is used during runtime as well as in gcov. */ +typedef struct branch_mispredict_infos +{ + /* An array describing the total number of mispredict entries. */ + gcov_pmu_brm_info_t **brm_array; + /* The total number of entries in the above array. */ + unsigned brm_count; + /* The total number of entries currently allocated in the array. + Used for bookkeeping. */ + unsigned alloc_brm_count; + /* PMU tool header */ + gcov_pmu_tool_header_t *pmu_tool_header; +} brm_infos_t; + +/* Structures embedded in coveraged program. The structures generated + by write_profile must match these. */ + +#if IN_LIBGCOV +/* Information about a single function. This uses the trailing array + idiom. The number of counters is determined from the counter_mask + in gcov_info. We hold an array of function info, so have to + explicitly calculate the correct array stride. */ + +struct gcov_fn_info +{ + gcov_unsigned_t ident; /* unique ident of function */ + gcov_unsigned_t lineno_checksum; /* function lineo_checksum */ + gcov_unsigned_t cfg_checksum; /* function cfg checksum */ + gcov_unsigned_t dc_offset; /* direct call offset */ + unsigned n_ctrs[0]; /* instrumented counters */ +}; + +/* Type of function used to merge counters. */ +typedef void (*gcov_merge_fn) (gcov_type *, gcov_unsigned_t); + +/* Information about counters. */ +struct gcov_ctr_info +{ + gcov_unsigned_t num; /* number of counters. */ + gcov_type *values; /* their values. */ + gcov_merge_fn merge; /* The function used to merge them. */ +}; + +/* Information about a single object file. */ +struct gcov_info +{ + gcov_unsigned_t version; /* expected version number */ + struct gcov_module_info *mod_info; /* addtional module info. */ + struct gcov_info *next; /* link to next, used by libgcov */ + + gcov_unsigned_t stamp; /* uniquifying time stamp */ + const char *filename; /* output file name */ + gcov_unsigned_t eof_pos; /* end position of profile data */ + unsigned n_functions; /* number of functions */ + const struct gcov_fn_info *functions; /* table of functions */ + + unsigned ctr_mask; /* mask of counters instrumented. */ + struct gcov_ctr_info counts[0]; /* count data. The number of bits + set in the ctr_mask field + determines how big this array + is. */ +}; + +/* Information about a single imported module. */ +struct dyn_imp_mod +{ + const struct gcov_info *imp_mod; + double weight; +}; + +/* Register a new object file module. */ +extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN; + +/* Called before fork, to avoid double counting. */ +extern void __gcov_flush (void) ATTRIBUTE_HIDDEN; + +/* The merge function that just sums the counters. */ +extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function to choose the most common value. */ +extern void __gcov_merge_single (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function to choose the most common difference between + consecutive values. */ +extern void __gcov_merge_delta (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function that just ors the counters together. */ +extern void __gcov_merge_ior (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function used for direct call counters. */ +extern void __gcov_merge_dc (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function used for reuse distance counters. */ +extern void __gcov_merge_reusedist (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The merge function used for indirect call counters. */ +extern void __gcov_merge_icall_topn (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; + +/* The profiler functions. */ +extern void __gcov_interval_profiler (gcov_type *, gcov_type, int, unsigned); +extern void __gcov_pow2_profiler (gcov_type *, gcov_type); +extern void __gcov_one_value_profiler (gcov_type *, gcov_type); +extern void __gcov_indirect_call_profiler (gcov_type *, gcov_type, void *, void *); +extern void __gcov_indirect_call_topn_profiler (void *, void *, gcov_unsigned_t) ATTRIBUTE_HIDDEN; +extern void __gcov_direct_call_profiler (void *, void *, gcov_unsigned_t) ATTRIBUTE_HIDDEN; +extern void __gcov_average_profiler (gcov_type *, gcov_type); +extern void __gcov_ior_profiler (gcov_type *, gcov_type); +extern void __gcov_sort_n_vals (gcov_type *value_array, int n); + +/* Initialize/start/stop/dump performance monitoring unit (PMU) profile */ +void __gcov_init_pmu_profiler (struct gcov_pmu_info *) ATTRIBUTE_HIDDEN; +void __gcov_start_pmu_profiler (void) ATTRIBUTE_HIDDEN; +void __gcov_stop_pmu_profiler (void) ATTRIBUTE_HIDDEN; +void __gcov_end_pmu_profiler (int gcda_error) ATTRIBUTE_HIDDEN; + +#ifndef inhibit_libc +/* The wrappers around some library functions.. */ +extern pid_t __gcov_fork (void) ATTRIBUTE_HIDDEN; +extern int __gcov_execl (const char *, char *, ...) ATTRIBUTE_HIDDEN; +extern int __gcov_execlp (const char *, char *, ...) ATTRIBUTE_HIDDEN; +extern int __gcov_execle (const char *, char *, ...) ATTRIBUTE_HIDDEN; +extern int __gcov_execv (const char *, char *const []) ATTRIBUTE_HIDDEN; +extern int __gcov_execvp (const char *, char *const []) ATTRIBUTE_HIDDEN; +extern int __gcov_execve (const char *, char *const [], char *const []) + ATTRIBUTE_HIDDEN; +#endif + +#endif /* IN_LIBGCOV */ + +#if IN_LIBGCOV >= 0 + +/* Optimum number of gcov_unsigned_t's read from or written to disk. */ +#define GCOV_BLOCK_SIZE (1 << 10) + +struct gcov_var +{ + _GCOV_FILE *file; + gcov_position_t start; /* Position of first byte of block */ + unsigned offset; /* Read/write position within the block. */ + unsigned length; /* Read limit in the block. */ + unsigned overread; /* Number of words overread. */ + int error; /* < 0 overflow, > 0 disk error. */ + int mode; /* < 0 writing, > 0 reading */ +#if IN_LIBGCOV + /* Holds one block plus 4 bytes, thus all coverage reads & writes + fit within this buffer and we always can transfer GCOV_BLOCK_SIZE + to and from the disk. libgcov never backtracks and only writes 4 + or 8 byte objects. */ + gcov_unsigned_t buffer[GCOV_BLOCK_SIZE + 1]; +#else + int endian; /* Swap endianness. */ + /* Holds a variable length block, as the compiler can write + strings and needs to backtrack. */ + size_t alloc; + gcov_unsigned_t *buffer; +#endif +}; + +/* In kernel mode, move gcov_var definition to gcov-io.c + to avoid dulipcate definitions. */ +#ifndef __GCOV_KERNEL__ +GCOV_LINKAGE struct gcov_var gcov_var ATTRIBUTE_HIDDEN; +#else +extern struct gcov_var gcov_var; +#endif + +/* Functions for reading and writing gcov files. In libgcov you can + open the file for reading then writing. Elsewhere you can open the + file either for reading or for writing. When reading a file you may + use the gcov_read_* functions, gcov_sync, gcov_position, & + gcov_error. When writing a file you may use the gcov_write + functions, gcov_seek & gcov_error. When a file is to be rewritten + you use the functions for reading, then gcov_rewrite then the + functions for writing. Your file may become corrupted if you break + these invariants. */ +#if IN_LIBGCOV +GCOV_LINKAGE int gcov_open (const char */*name*/) ATTRIBUTE_HIDDEN; +#else +GCOV_LINKAGE int gcov_open (const char */*name*/, int /*direction*/); +GCOV_LINKAGE int gcov_magic (gcov_unsigned_t, gcov_unsigned_t); +#endif +GCOV_LINKAGE int gcov_close (void) ATTRIBUTE_HIDDEN; + +/* Available everywhere. */ +static gcov_position_t gcov_position (void); +static int gcov_is_error (void); + +GCOV_LINKAGE const char *gcov_read_string (void) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE gcov_unsigned_t gcov_read_unsigned (void) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE gcov_type gcov_read_counter (void) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void gcov_read_summary (struct gcov_summary *) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE char *gcov_canonical_filename (char *filename) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void +gcov_read_pmu_load_latency_info (gcov_pmu_ll_info_t *ll_info, + gcov_unsigned_t len) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void +gcov_read_pmu_branch_mispredict_info (gcov_pmu_brm_info_t *brm_info, + gcov_unsigned_t len) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void +gcov_read_pmu_tool_header (gcov_pmu_tool_header_t *tool_header, + gcov_unsigned_t len) ATTRIBUTE_HIDDEN; +#ifndef __GCOV_KERNEL__ +GCOV_LINKAGE float convert_unsigned_to_pct ( + const unsigned number) ATTRIBUTE_HIDDEN; +#endif /* __GCOV_KERNEL__ */ + +#if !IN_LIBGCOV && IN_GCOV != 1 +GCOV_LINKAGE void gcov_read_module_info (struct gcov_module_info *mod_info, + gcov_unsigned_t len) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void print_load_latency_line (FILE *fp, + const gcov_pmu_ll_info_t *ll_info, + const enum print_newline); +GCOV_LINKAGE void +print_branch_mispredict_line (FILE *fp, const gcov_pmu_brm_info_t *brm_info, + const enum print_newline); +GCOV_LINKAGE void print_pmu_tool_header (FILE *fp, + gcov_pmu_tool_header_t *tool_header, + const enum print_newline); +#endif + +#if IN_GCOV != 1 +GCOV_LINKAGE void destroy_pmu_tool_header (gcov_pmu_tool_header_t *tool_header) + ATTRIBUTE_HIDDEN; +#endif + +#if IN_LIBGCOV +/* Available only in libgcov */ +GCOV_LINKAGE void gcov_write_counter (gcov_type) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t) + ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /*tag*/, + const struct gcov_summary *) + ATTRIBUTE_HIDDEN; + +GCOV_LINKAGE void gcov_write_module_infos (struct gcov_info *mod_info) + ATTRIBUTE_HIDDEN; +GCOV_LINKAGE const struct dyn_imp_mod ** +gcov_get_sorted_import_module_array (struct gcov_info *mod_info, unsigned *len) + ATTRIBUTE_HIDDEN; +static void gcov_rewrite (void); +GCOV_LINKAGE void gcov_seek (gcov_position_t /*position*/) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void gcov_truncate (void) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE gcov_unsigned_t gcov_string_length (const char *) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE unsigned gcov_gcda_file_size (struct gcov_info *); +#else +/* Available outside libgcov */ +GCOV_LINKAGE void gcov_sync (gcov_position_t /*base*/, + gcov_unsigned_t /*length */); +#endif + +#if !IN_GCOV +/* Available outside gcov */ +GCOV_LINKAGE void gcov_write_unsigned (gcov_unsigned_t) ATTRIBUTE_HIDDEN; +GCOV_LINKAGE void gcov_write_string (const char *) ATTRIBUTE_HIDDEN; +#endif + +#if !IN_GCOV && !IN_LIBGCOV +/* Available only in compiler */ +GCOV_LINKAGE gcov_position_t gcov_write_tag (gcov_unsigned_t); +GCOV_LINKAGE void gcov_write_length (gcov_position_t /*position*/); +#endif + +#if IN_GCOV > 0 +/* Available in gcov */ +GCOV_LINKAGE time_t gcov_time (void); +#endif + +/* Save the current position in the gcov file. */ + +static inline gcov_position_t +gcov_position (void) +{ + return gcov_var.start + gcov_var.offset; +} + +/* Return nonzero if the error flag is set. */ + +static inline int +gcov_is_error (void) +{ + return gcov_var.file ? gcov_var.error : 1; +} + +#if IN_LIBGCOV +/* Move to beginning of file and initialize for writing. */ + +static inline void +gcov_rewrite (void) +{ + gcc_assert (gcov_var.mode > 0); + gcov_var.mode = -1; + gcov_var.start = 0; + gcov_var.offset = 0; + _GCOV_fseek (gcov_var.file, 0L, SEEK_SET); +} +#endif + +#endif /* IN_LIBGCOV >= 0 */ + +#endif /* GCC_GCOV_IO_H */ |