c77556a5d1
2014-07-10 Rong Xu <xur@google.com> Add gcov-tool: an offline gcda profile processing tool Support. * gcc/gcov-io.c (gcov_position): Make avaialble to gcov-tool. (gcov_is_error): Ditto. (gcov_read_string): Ditto. (gcov_read_sync): Ditto. * gcc/gcov-io.h: Move counter defines to gcov-counter.def. * gcc/gcov-dump.c (tag_counters): Use gcov-counter.def. * gcc/coverage.c: Ditto. * gcc/gcov-tool.c: Offline gcda profile processing tool. (unlink_gcda_file): Remove one gcda file. (unlink_profile_dir): Remove gcda files from the profile path. (gcov_output_files): Output gcda files to an output dir. (profile_merge): Merge two profiles in directory. (print_merge_usage_message): Print merge usage. (merge_usage): Print merge usage and exit. (do_merge): Driver for profile merge sub-command. (profile_rewrite): Rewrite profile. (print_rewrite_usage_message): Print rewrite usage. (rewrite_usage): Print rewrite usage and exit. (do_rewrite): Driver for profile rewrite sub-command. (print_usage): Print gcov-info usage and exit. (print_version): Print gcov-info version. (process_args): Process arguments. (main): Main routine for gcov-tool. * gcc/Makefile.in: Build and install gcov-tool. * gcc/gcov-counter.def: New file split from gcov-io.h. * libgcc/libgcov-driver.c (gcov_max_filename): Make available to gcov-tool. * libgcc/libgcov-merge.c (__gcov_merge_add): Replace gcov_read_counter() with a Macro. (__gcov_merge_ior): Ditto. (__gcov_merge_time_profile): Ditto. (__gcov_merge_single): Ditto. (__gcov_merge_delta): Ditto. * libgcc/libgcov-util.c (void gcov_set_verbose): Set the verbose flag in the utility functions. (set_fn_ctrs): Utility function for reading gcda files to in-memory gcov_list object link lists. (tag_function): Ditto. (tag_blocks): Ditto. (tag_arcs): Ditto. (tag_lines): Ditto. (tag_counters): Ditto. (tag_summary): Ditto. (read_gcda_finalize): Ditto. (read_gcda_file): Ditto. (ftw_read_file): Ditto. (read_profile_dir_init): Ditto. (gcov_read_profile_dir): Ditto. (gcov_read_counter_mem): Ditto. (gcov_get_merge_weight): Ditto. (merge_wrapper): A wrapper function that calls merging handler. (gcov_merge): Merge two gcov_info objects with weights. (find_match_gcov_info): Find the matched gcov_info in the list. (gcov_profile_merge): Merge two gcov_info object lists. (__gcov_add_counter_op): Process edge profile counter values. (__gcov_ior_counter_op): Process IOR profile counter values. (__gcov_delta_counter_op): Process delta profile counter values. (__gcov_single_counter_op): Process single profile counter values. (fp_scale): Callback function for float-point scaling. (int_scale): Callback function for integer fraction scaling. (gcov_profile_scale): Scaling profile counters. (gcov_profile_normalize): Normalize profile counters. * libgcc/libgcov.h: Add headers and functions for gcov-tool use. (gcov_get_counter): New. (gcov_get_counter_target): Ditto. (struct gcov_info): Make the functions field mutable in gcov-tool compilation. * gcc/doc/gcc.texi: Include gcov-tool.texi. * gcc/doc/gcov-tool.texi: Document for gcov-tool. From-SVN: r212448
316 lines
10 KiB
C
316 lines
10 KiB
C
/* Header file for libgcov-*.c.
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Copyright (C) 1996-2014 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_LIBGCOV_H
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#define GCC_LIBGCOV_H
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/* work around the poisoned malloc/calloc in system.h. */
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#ifndef xmalloc
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#define xmalloc malloc
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#endif
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#ifndef xcalloc
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#define xcalloc calloc
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#endif
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#ifndef IN_GCOV_TOOL
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/* About the target. */
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/* This path will be used by libgcov runtime. */
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#include "tconfig.h"
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#include "tsystem.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "libgcc_tm.h"
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#if BITS_PER_UNIT == 8
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typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI)));
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typedef unsigned gcov_position_t __attribute__ ((mode (SI)));
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#if LONG_LONG_TYPE_SIZE > 32
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typedef signed gcov_type __attribute__ ((mode (DI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (DI)));
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#else
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typedef signed gcov_type __attribute__ ((mode (SI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
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#endif
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#else
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#if BITS_PER_UNIT == 16
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typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI)));
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typedef unsigned gcov_position_t __attribute__ ((mode (HI)));
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#if LONG_LONG_TYPE_SIZE > 32
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typedef signed gcov_type __attribute__ ((mode (SI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI)));
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#else
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typedef signed gcov_type __attribute__ ((mode (HI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
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#endif
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#else
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typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI)));
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typedef unsigned gcov_position_t __attribute__ ((mode (QI)));
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#if LONG_LONG_TYPE_SIZE > 32
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typedef signed gcov_type __attribute__ ((mode (HI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI)));
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#else
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typedef signed gcov_type __attribute__ ((mode (QI)));
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typedef unsigned gcov_type_unsigned __attribute__ ((mode (QI)));
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#endif
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#endif
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#endif
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#if defined (TARGET_POSIX_IO)
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#define GCOV_LOCKED 1
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#else
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#define GCOV_LOCKED 0
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#endif
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#else /* IN_GCOV_TOOL */
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/* About the host. */
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/* This path will be compiled for the host and linked into
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gcov-tool binary. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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typedef unsigned gcov_unsigned_t;
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typedef unsigned gcov_position_t;
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/* gcov_type is typedef'd elsewhere for the compiler */
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#if defined (HOST_HAS_F_SETLKW)
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#define GCOV_LOCKED 1
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#else
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#define GCOV_LOCKED 0
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#endif
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/* Some Macros specific to gcov-tool. */
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#define L_gcov 1
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#define L_gcov_merge_add 1
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#define L_gcov_merge_single 1
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#define L_gcov_merge_delta 1
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#define L_gcov_merge_ior 1
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#define L_gcov_merge_time_profile 1
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/* Make certian internal functions/variables in libgcov available for
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gcov-tool access. */
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#define GCOV_TOOL_LINKAGE
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extern gcov_type gcov_read_counter_mem ();
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extern unsigned gcov_get_merge_weight ();
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#endif /* !IN_GCOV_TOOL */
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#if defined(inhibit_libc)
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#define IN_LIBGCOV (-1)
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#else
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#define IN_LIBGCOV 1
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#if defined(L_gcov)
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#define GCOV_LINKAGE /* nothing */
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#endif
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#endif
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/* In libgcov we need these functions to be extern, so prefix them with
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__gcov. In libgcov they must also be hidden so that the instance in
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the executable is not also used in a DSO. */
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#define gcov_var __gcov_var
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#define gcov_open __gcov_open
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#define gcov_close __gcov_close
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#define gcov_write_tag_length __gcov_write_tag_length
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#define gcov_position __gcov_position
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#define gcov_seek __gcov_seek
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#define gcov_rewrite __gcov_rewrite
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#define gcov_is_error __gcov_is_error
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#define gcov_write_unsigned __gcov_write_unsigned
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#define gcov_write_counter __gcov_write_counter
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#define gcov_write_summary __gcov_write_summary
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#define gcov_read_unsigned __gcov_read_unsigned
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#define gcov_read_counter __gcov_read_counter
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#define gcov_read_summary __gcov_read_summary
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/* Poison these, so they don't accidentally slip in. */
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#pragma GCC poison gcov_write_string gcov_write_tag gcov_write_length
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#pragma GCC poison gcov_time gcov_magic
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#ifdef HAVE_GAS_HIDDEN
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#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
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#else
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#define ATTRIBUTE_HIDDEN
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#endif
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#include "gcov-io.h"
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/* Structures embedded in coveraged program. The structures generated
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by write_profile must match these. */
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/* Information about counters for a single function. */
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struct gcov_ctr_info
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{
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gcov_unsigned_t num; /* number of counters. */
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gcov_type *values; /* their values. */
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};
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/* Information about a single function. This uses the trailing array
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idiom. The number of counters is determined from the merge pointer
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array in gcov_info. The key is used to detect which of a set of
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comdat functions was selected -- it points to the gcov_info object
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of the object file containing the selected comdat function. */
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struct gcov_fn_info
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{
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const struct gcov_info *key; /* comdat key */
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gcov_unsigned_t ident; /* unique ident of function */
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gcov_unsigned_t lineno_checksum; /* function lineo_checksum */
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gcov_unsigned_t cfg_checksum; /* function cfg checksum */
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struct gcov_ctr_info ctrs[0]; /* instrumented counters */
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};
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/* Type of function used to merge counters. */
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typedef void (*gcov_merge_fn) (gcov_type *, gcov_unsigned_t);
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/* Information about a single object file. */
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struct gcov_info
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{
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gcov_unsigned_t version; /* expected version number */
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struct gcov_info *next; /* link to next, used by libgcov */
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gcov_unsigned_t stamp; /* uniquifying time stamp */
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const char *filename; /* output file name */
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gcov_merge_fn merge[GCOV_COUNTERS]; /* merge functions (null for
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unused) */
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unsigned n_functions; /* number of functions */
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#ifndef IN_GCOV_TOOL
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const struct gcov_fn_info *const *functions; /* pointer to pointers
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to function information */
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#else
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const struct gcov_fn_info **functions;
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#endif /* !IN_GCOV_TOOL */
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};
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/* Register a new object file module. */
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extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN;
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/* Called before fork, to avoid double counting. */
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extern void __gcov_flush (void) ATTRIBUTE_HIDDEN;
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/* Function to reset all counters to 0. */
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extern void __gcov_reset (void);
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/* Function to enable early write of profile information so far. */
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extern void __gcov_dump (void);
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/* The merge function that just sums the counters. */
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extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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/* The merge function to select the minimum valid counter value. */
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extern void __gcov_merge_time_profile (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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/* The merge function to choose the most common value. */
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extern void __gcov_merge_single (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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/* The merge function to choose the most common difference between
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consecutive values. */
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extern void __gcov_merge_delta (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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/* The merge function that just ors the counters together. */
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extern void __gcov_merge_ior (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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/* The profiler functions. */
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extern void __gcov_interval_profiler (gcov_type *, gcov_type, int, unsigned);
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extern void __gcov_pow2_profiler (gcov_type *, gcov_type);
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extern void __gcov_one_value_profiler (gcov_type *, gcov_type);
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extern void __gcov_indirect_call_profiler (gcov_type*, gcov_type,
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void*, void*);
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extern void __gcov_indirect_call_profiler_v2 (gcov_type, void *);
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extern void __gcov_time_profiler (gcov_type *);
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extern void __gcov_average_profiler (gcov_type *, gcov_type);
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extern void __gcov_ior_profiler (gcov_type *, gcov_type);
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#ifndef inhibit_libc
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/* The wrappers around some library functions.. */
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extern pid_t __gcov_fork (void) ATTRIBUTE_HIDDEN;
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extern int __gcov_execl (const char *, char *, ...) ATTRIBUTE_HIDDEN;
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extern int __gcov_execlp (const char *, char *, ...) ATTRIBUTE_HIDDEN;
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extern int __gcov_execle (const char *, char *, ...) ATTRIBUTE_HIDDEN;
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extern int __gcov_execv (const char *, char *const []) ATTRIBUTE_HIDDEN;
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extern int __gcov_execvp (const char *, char *const []) ATTRIBUTE_HIDDEN;
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extern int __gcov_execve (const char *, char *const [], char *const [])
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ATTRIBUTE_HIDDEN;
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/* Functions that only available in libgcov. */
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GCOV_LINKAGE int gcov_open (const char */*name*/) ATTRIBUTE_HIDDEN;
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GCOV_LINKAGE void gcov_write_counter (gcov_type) ATTRIBUTE_HIDDEN;
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GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t)
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ATTRIBUTE_HIDDEN;
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GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /*tag*/,
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const struct gcov_summary *)
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ATTRIBUTE_HIDDEN;
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GCOV_LINKAGE void gcov_seek (gcov_position_t /*position*/) ATTRIBUTE_HIDDEN;
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GCOV_LINKAGE inline void gcov_rewrite (void);
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/* "Counts" stored in gcda files can be a real counter value, or
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an target address. When differentiate these two types because
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when manipulating counts, we should only change real counter values,
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rather target addresses. */
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static inline gcov_type
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gcov_get_counter (void)
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{
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#ifndef IN_GCOV_TOOL
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/* This version is for reading count values in libgcov runtime:
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we read from gcda files. */
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return gcov_read_counter ();
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#else
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/* This version is for gcov-tool. We read the value from memory and
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multiply it by the merge weight. */
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return gcov_read_counter_mem () * gcov_get_merge_weight ();
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#endif
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}
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/* Similar function as gcov_get_counter(), but handles target address
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counters. */
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static inline gcov_type
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gcov_get_counter_target (void)
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{
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#ifndef IN_GCOV_TOOL
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/* This version is for reading count target values in libgcov runtime:
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we read from gcda files. */
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return gcov_read_counter ();
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#else
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/* This version is for gcov-tool. We read the value from memory and we do NOT
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multiply it by the merge weight. */
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return gcov_read_counter_mem ();
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#endif
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}
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#endif /* !inhibit_libc */
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#endif /* GCC_LIBGCOV_H */
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