Import stripped Arm GNU Toolchain 13.2.Rel1HEADumineko

https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads

Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c

1 files changed, 415 insertions, 0 deletions

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+.rm #[ #] #H #V #F C
+.\" ========================================================================
+.\"
+.IX Title "GCOV-TOOL 1"
+.TH GCOV-TOOL 1 "2023-10-09" "gcc-13.2.1" "GNU"
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+gcov\-tool \- offline gcda profile processing tool
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+gcov-tool [\fB\-v\fR|\fB\-\-version\fR] [\fB\-h\fR|\fB\-\-help\fR]
+.PP
+gcov-tool merge [merge\-options] \fIdirectory1\fR \fIdirectory2\fR
+     [\fB\-o\fR|\fB\-\-output\fR \fIdirectory\fR]
+     [\fB\-v\fR|\fB\-\-verbose\fR]
+     [\fB\-w\fR|\fB\-\-weight\fR \fIw1,w2\fR]
+.PP
+gcov-tool merge-stream [merge\-stream\-options] [\fIfile\fR]
+     [\fB\-v\fR|\fB\-\-verbose\fR]
+     [\fB\-w\fR|\fB\-\-weight\fR \fIw1,w2\fR]
+.PP
+gcov-tool rewrite [rewrite\-options] \fIdirectory\fR
+     [\fB\-n\fR|\fB\-\-normalize\fR \fIlong_long_value\fR]
+     [\fB\-o\fR|\fB\-\-output\fR \fIdirectory\fR]
+     [\fB\-s\fR|\fB\-\-scale\fR \fIfloat_or_simple\-frac_value\fR]
+     [\fB\-v\fR|\fB\-\-verbose\fR]
+.PP
+gcov-tool overlap [overlap\-options] \fIdirectory1\fR \fIdirectory2\fR
+     [\fB\-f\fR|\fB\-\-function\fR]
+     [\fB\-F\fR|\fB\-\-fullname\fR]
+     [\fB\-h\fR|\fB\-\-hotonly\fR]
+     [\fB\-o\fR|\fB\-\-object\fR]
+     [\fB\-t\fR|\fB\-\-hot_threshold\fR] \fIfloat\fR
+     [\fB\-v\fR|\fB\-\-verbose\fR]
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fBgcov-tool\fR is an offline tool to process gcc's gcda profile files.
+.PP
+Current gcov-tool supports the following functionalities:
+.IP "*" 4
+merge two sets of profiles with weights.
+.IP "*" 4
+read a stream of profiles with associated filenames and merge it with a set of
+profiles with weights.
+.IP "*" 4
+read one set of profile and rewrite profile contents. One can scale or
+normalize the count values.
+.PP
+Examples of the use cases for this tool are:
+.IP "*" 4
+Collect the profiles for different set of inputs, and use this tool to merge
+them. One can specify the weight to factor in the relative importance of
+each input.
+.IP "*" 4
+Collect profiles from target systems without a filesystem (freestanding
+environments).  Merge the collected profiles with associated profiles
+present on the host system.  One can specify the weight to factor in the
+relative importance of each input.
+.IP "*" 4
+Rewrite the profile after removing a subset of the gcda files, while maintaining
+the consistency of the summary and the histogram.
+.IP "*" 4
+It can also be used to debug or libgcov code as the tools shares the majority
+code as the runtime library.
+.PP
+Note that for the merging operation, this profile generated offline may
+contain slight different values from the online merged profile. Here are
+a list of typical differences:
+.IP "*" 4
+histogram difference: This offline tool recomputes the histogram after merging
+the counters. The resulting histogram, therefore, is precise. The online
+merging does not have this capability \*(-- the histogram is merged from two
+histograms and the result is an approximation.
+.IP "*" 4
+summary checksum difference: Summary checksum uses a \s-1CRC32\s0 operation. The value
+depends on the link list order of gcov-info objects. This order is different in
+gcov-tool from that in the online merge. It's expected to have different
+summary checksums. It does not really matter as the compiler does not use this
+checksum anywhere.
+.IP "*" 4
+value profile counter values difference: Some counter values for value profile
+are runtime dependent, like heap addresses. It's normal to see some difference
+in these kind of counters.
+.SH "OPTIONS"
+.IX Header "OPTIONS"
+.IP "\fB\-h\fR" 4
+.IX Item "-h"
+.PD 0
+.IP "\fB\-\-help\fR" 4
+.IX Item "--help"
+.PD
+Display help about using \fBgcov-tool\fR (on the standard output), and
+exit without doing any further processing.
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-version\fR" 4
+.IX Item "--version"
+.PD
+Display the \fBgcov-tool\fR version number (on the standard output),
+and exit without doing any further processing.
+.IP "\fBmerge\fR" 4
+.IX Item "merge"
+Merge two profile directories.
+.RS 4
+.IP "\fB\-o\fR \fIdirectory\fR" 4
+.IX Item "-o directory"
+.PD 0
+.IP "\fB\-\-output\fR \fIdirectory\fR" 4
+.IX Item "--output directory"
+.PD
+Set the output profile directory. Default output directory name is
+\&\fImerged_profile\fR.
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-verbose\fR" 4
+.IX Item "--verbose"
+.PD
+Set the verbose mode.
+.IP "\fB\-w\fR \fIw1\fR\fB,\fR\fIw2\fR" 4
+.IX Item "-w w1,w2"
+.PD 0
+.IP "\fB\-\-weight\fR \fIw1\fR\fB,\fR\fIw2\fR" 4
+.IX Item "--weight w1,w2"
+.PD
+Set the merge weights of the \fIdirectory1\fR and \fIdirectory2\fR,
+respectively. The default weights are 1 for both.
+.RE
+.RS 4
+.RE
+.IP "\fBmerge-stream\fR" 4
+.IX Item "merge-stream"
+Collect profiles with associated filenames from a \fIgcfn\fR and \fIgcda\fR
+data stream.  Read the stream from the file specified by \fIfile\fR or from
+\&\fIstdin\fR.  Merge the profiles with associated profiles in the host
+filesystem.  Apply the optional weights while merging profiles.
+.Sp
+For the generation of a \fIgcfn\fR and \fIgcda\fR data stream on the target
+system, please have a look at the \f(CW\*(C`_\|_gcov_filename_to_gcfn()\*(C'\fR and
+\&\f(CW\*(C`_\|_gcov_info_to_gcda()\*(C'\fR functions declared in \f(CW\*(C`#include <gcov.h>\*(C'\fR.
+.RS 4
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-verbose\fR" 4
+.IX Item "--verbose"
+.PD
+Set the verbose mode.
+.IP "\fB\-w\fR \fIw1\fR\fB,\fR\fIw2\fR" 4
+.IX Item "-w w1,w2"
+.PD 0
+.IP "\fB\-\-weight\fR \fIw1\fR\fB,\fR\fIw2\fR" 4
+.IX Item "--weight w1,w2"
+.PD
+Set the merge weights of the profiles from the \fIgcfn\fR and \fIgcda\fR data
+stream and the associated profiles in the host filesystem, respectively.  The
+default weights are 1 for both.
+.RE
+.RS 4
+.RE
+.IP "\fBrewrite\fR" 4
+.IX Item "rewrite"
+Read the specified profile directory and rewrite to a new directory.
+.RS 4
+.IP "\fB\-n\fR \fIlong_long_value\fR" 4
+.IX Item "-n long_long_value"
+.PD 0
+.IP "\fB\-\-normalize <long_long_value>\fR" 4
+.IX Item "--normalize <long_long_value>"
+.PD
+Normalize the profile. The specified value is the max counter value
+in the new profile.
+.IP "\fB\-o\fR \fIdirectory\fR" 4
+.IX Item "-o directory"
+.PD 0
+.IP "\fB\-\-output\fR \fIdirectory\fR" 4
+.IX Item "--output directory"
+.PD
+Set the output profile directory. Default output name is \fIrewrite_profile\fR.
+.IP "\fB\-s\fR \fIfloat_or_simple\-frac_value\fR" 4
+.IX Item "-s float_or_simple-frac_value"
+.PD 0
+.IP "\fB\-\-scale\fR \fIfloat_or_simple\-frac_value\fR" 4
+.IX Item "--scale float_or_simple-frac_value"
+.PD
+Scale the profile counters. The specified value can be in floating point value,
+or simple fraction value form, such 1, 2, 2/3, and 5/3.
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-verbose\fR" 4
+.IX Item "--verbose"
+.PD
+Set the verbose mode.
+.RE
+.RS 4
+.RE
+.IP "\fBoverlap\fR" 4
+.IX Item "overlap"
+Compute the overlap score between the two specified profile directories.
+The overlap score is computed based on the arc profiles. It is defined as
+the sum of min (p1_counter[i] / p1_sum_all, p2_counter[i] / p2_sum_all),
+for all arc counter i, where p1_counter[i] and p2_counter[i] are two
+matched counters and p1_sum_all and p2_sum_all are the sum of counter
+values in profile 1 and profile 2, respectively.
+.RS 4
+.IP "\fB\-f\fR" 4
+.IX Item "-f"
+.PD 0
+.IP "\fB\-\-function\fR" 4
+.IX Item "--function"
+.PD
+Print function level overlap score.
+.IP "\fB\-F\fR" 4
+.IX Item "-F"
+.PD 0
+.IP "\fB\-\-fullname\fR" 4
+.IX Item "--fullname"
+.PD
+Print full gcda filename.
+.IP "\fB\-h\fR" 4
+.IX Item "-h"
+.PD 0
+.IP "\fB\-\-hotonly\fR" 4
+.IX Item "--hotonly"
+.PD
+Only print info for hot objects/functions.
+.IP "\fB\-o\fR" 4
+.IX Item "-o"
+.PD 0
+.IP "\fB\-\-object\fR" 4
+.IX Item "--object"
+.PD
+Print object level overlap score.
+.IP "\fB\-t\fR \fIfloat\fR" 4
+.IX Item "-t float"
+.PD 0
+.IP "\fB\-\-hot_threshold <float>\fR" 4
+.IX Item "--hot_threshold <float>"
+.PD
+Set the threshold for hot counter value.
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD 0
+.IP "\fB\-\-verbose\fR" 4
+.IX Item "--verbose"
+.PD
+Set the verbose mode.
+.RE
+.RS 4
+.RE
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fIgpl\fR\|(7), \fIgfdl\fR\|(7), \fIfsf\-funding\fR\|(7), \fIgcc\fR\|(1), \fIgcov\fR\|(1) and the Info entry for
+\&\fIgcc\fR.
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright (c) 2014\-2023 Free Software Foundation, Inc.
+.PP
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with the
+Invariant Sections being \*(L"\s-1GNU\s0 General Public License\*(R" and \*(L"Funding
+Free Software\*(R", the Front-Cover texts being (a) (see below), and with
+the Back-Cover Texts being (b) (see below).  A copy of the license is
+included in the \fIgfdl\fR\|(7) man page.
+.PP
+(a) The \s-1FSF\s0's Front-Cover Text is:
+.PP
+.Vb 1
+\&     A GNU Manual
+.Ve
+.PP
+(b) The \s-1FSF\s0's Back-Cover Text is:
+.PP
+.Vb 3
+\&     You have freedom to copy and modify this GNU Manual, like GNU
+\&     software.  Copies published by the Free Software Foundation raise
+\&     funds for GNU development.
+.Ve