Backport: Add option to do baremetal configuration.

Aligned with development branch and added option 'baremetal' that sets configuration for bare metal builds.
This commit is contained in:
Azim Khan 2017-12-21 09:28:39 +00:00 committed by Mohammad Azim Khan
parent a15a41ce48
commit 2339966933

View File

@ -1,22 +1,81 @@
#!/usr/bin/perl #!/usr/bin/perl
#
# Tune the configuration file # This file is part of mbed TLS (https://tls.mbed.org)
#
# Copyright (c) 2014-2016, ARM Limited, All Rights Reserved
#
# Purpose
#
# Comments and uncomments #define lines in the given header file and optionally
# sets their value or can get the value. This is to provide scripting control of
# what preprocessor symbols, and therefore what build time configuration flags
# are set in the 'config.h' file.
#
# Usage: config.pl [-f <file> | --file <file>] [-o | --force]
# [set <symbol> <value> | unset <symbol> | get <symbol> |
# full | realfull]
#
# Full usage description provided below.
#
# Things that shouldn't be enabled with "full".
#
# POLARSSL_TEST_NULL_ENTROPY
# POLARSSL_DEPRECATED_REMOVED
# POLARSSL_HAVE_SSE2
# POLARSSL_PLATFORM_NO_STD_FUNCTIONS
# POLARSSL_ECP_DP_M221_ENABLED
# POLARSSL_ECP_DP_M383_ENABLED
# POLARSSL_ECP_DP_M511_ENABLED
# POLARSSL_NO_DEFAULT_ENTROPY_SOURCES
# POLARSSL_NO_PLATFORM_ENTROPY
# POLARSSL_REMOVE_ARC4_CIPHERSUITES
# POLARSSL_SSL_HW_RECORD_ACCEL
# POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3
# POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
# - this could be enabled if the respective tests were adapted
# POLARSSL_ZLIB_SUPPORT
# POLARSSL_PKCS11_C
# and any symbol beginning _ALT
#
use warnings; use warnings;
use strict; use strict;
my $config_file = "include/polarssl/config.h";
my $usage = <<EOU; my $usage = <<EOU;
$0 [-f <file>] unset <name> $0 [-f <file> | --file <file>] [-o | --force]
$0 [-f <file>] set <name> [<value>] [set <symbol> <value> | unset <symbol> | get <symbol> |
EOU full | realfull | baremetal]
# for our eyes only:
# $0 [-f <file>] full Commands
set <symbol> [<value>] - Uncomments or adds a #define for the <symbol> to
the configuration file, and optionally making it
of <value>.
If the symbol isn't present in the file an error
is returned.
unset <symbol> - Comments out the #define for the given symbol if
present in the configuration file.
get <symbol> - Finds the #define for the given symbol, returning
an exitcode of 0 if the symbol is found, and 1 if
not. The value of the symbol is output if one is
specified in the configuration file.
full - Uncomments all #define's in the configuration file
excluding some reserved symbols, until the
'Module configuration options' section
realfull - Uncomments all #define's with no exclusions
baremetal - Sets full configuration suitable for baremetal build.
Options
-f | --file <filename> - The file or file path for the configuration file
to edit. When omitted, the following default is
used:
$config_file
-o | --force - If the symbol isn't present in the configuration
file when setting its value, a #define is
appended to the end of the file.
EOU
# Things that shouldn't be enabled with "full".
# Notes:
# - POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3 and
# POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION could be enabled if the
# respective tests were adapted
my @excluded = qw( my @excluded = qw(
POLARSSL_ERROR_STRERROR_BC POLARSSL_ERROR_STRERROR_BC
POLARSSL_MEMORY_C POLARSSL_MEMORY_C
@ -39,86 +98,199 @@ POLARSSL_PKCS11_C
_ALT\s*$ _ALT\s*$
); );
# Things that should be disabled in "baremetal"
my @excluded_baremetal = qw(
POLARSSL_NET_C
POLARSSL_TIMING_C
POLARSSL_FS_IO
POLARSSL_ENTROPY_NV_SEED
POLARSSL_HAVE_TIME
POLARSSL_HAVE_TIME_DATE
POLARSSL_DEPRECATED_WARNING
POLARSSL_HAVEGE_C
POLARSSL_THREADING_C
POLARSSL_THREADING_PTHREAD
POLARSSL_MEMORY_BACKTRACE
POLARSSL_MEMORY_BUFFER_ALLOC_C
POLARSSL_PLATFORM_TIME_ALT
POLARSSL_PLATFORM_FPRINTF_ALT
);
# Things that should be enabled in "full" even if they match @excluded # Things that should be enabled in "full" even if they match @excluded
my @non_excluded = qw( my @non_excluded = qw(
PLATFORM_[A-Z0-9]+_ALT PLATFORM_[A-Z0-9]+_ALT
); );
my $config_file = "include/polarssl/config.h"; # Things that should be enabled in "baremetal"
my @non_excluded_baremetal = qw(
POLARSSL_NO_PLATFORM_ENTROPY
);
# get -f option # Process the command line arguments
if (@ARGV >= 2 && $ARGV[0] eq "-f") {
shift; # -f
$config_file = shift;
-f $config_file or die "No such file: $config_file\n"; my $force_option = 0;
} else {
if (! -f $config_file) { my ($arg, $name, $value, $action);
chdir '..' or die;
-d $config_file while ($arg = shift) {
or die "Without -f, must be run from root or scripts\n"
# Check if the argument is an option
if ($arg eq "-f" || $arg eq "--file") {
$config_file = shift;
-f $config_file or die "No such file: $config_file\n";
}
elsif ($arg eq "-o" || $arg eq "--force") {
$force_option = 1;
}
else
{
# ...else assume it's a command
$action = $arg;
if ($action eq "full" || $action eq "realfull" || $action eq "baremetal" ) {
# No additional parameters
die $usage if @ARGV;
}
elsif ($action eq "unset" || $action eq "get") {
die $usage unless @ARGV;
$name = shift;
}
elsif ($action eq "set") {
die $usage unless @ARGV;
$name = shift;
$value = shift if @ARGV;
}
else {
die "Command '$action' not recognised.\n\n".$usage;
}
} }
} }
# get action # If no command was specified, exit...
die $usage unless @ARGV; if ( not defined($action) ){ die $usage; }
my $action = shift;
my ($name, $value); # Check the config file is present
if ($action eq "full") { if (! -f $config_file) {
# nothing to do
} elsif ($action eq "unset") { chdir '..' or die;
die $usage unless @ARGV;
$name = shift; # Confirm this is the project root directory and try again
} elsif ($action eq "set") { if ( !(-d 'scripts' && -d 'include' && -d 'library' && -f $config_file) ) {
die $usage unless @ARGV; die "If no file specified, must be run from the project root or scripts directory.\n";
$name = shift; }
$value = shift if @ARGV;
} else {
die $usage;
} }
die $usage if @ARGV;
# Now read the file and process the contents
open my $config_read, '<', $config_file or die "read $config_file: $!\n"; open my $config_read, '<', $config_file or die "read $config_file: $!\n";
my @config_lines = <$config_read>; my @config_lines = <$config_read>;
close $config_read; close $config_read;
my $exclude_re = join '|', @excluded; # Add required baremetal symbols to the list that is included.
my $no_exclude_re = join '|', @non_excluded; if ( $action eq "baremetal" ) {
@non_excluded = ( @non_excluded, @non_excluded_baremetal );
}
open my $config_write, '>', $config_file or die "write $config_file: $!\n"; my ($exclude_re, $no_exclude_re, $exclude_baremetal_re);
if ($action eq "realfull") {
$exclude_re = qr/^$/;
$no_exclude_re = qr/./;
} else {
$exclude_re = join '|', @excluded;
$no_exclude_re = join '|', @non_excluded;
}
if ( $action eq "baremetal" ) {
$exclude_baremetal_re = join '|', @excluded_baremetal;
}
my $config_write = undef;
if ($action ne "get") {
open $config_write, '>', $config_file or die "write $config_file: $!\n";
}
my $done; my $done;
for my $line (@config_lines) { for my $line (@config_lines) {
if ($action eq "full") { if ($action eq "full" || $action eq "realfull" || $action eq "baremetal" ) {
if ($line =~ /name SECTION: Module configuration options/) { if ($line =~ /name SECTION: Module configuration options/) {
$done = 1; $done = 1;
} }
if (!$done && $line =~ m!^//\s?#define! && if (!$done && $line =~ m!^//\s?#define! &&
( $line !~ /$exclude_re/ || $line =~ /$no_exclude_re/ ) ) { ( $line !~ /$exclude_re/ || $line =~ /$no_exclude_re/ ) &&
$line =~ s!^//!!; ( $action ne "baremetal" || ( $line !~ /$exclude_baremetal_re/ ) ) ) {
$line =~ s!^//\s?!!;
}
if (!$done && $line =~ m!^\s?#define! &&
! ( ( $line !~ /$exclude_re/ || $line =~ /$no_exclude_re/ ) &&
( $action ne "baremetal" || ( $line !~ /$exclude_baremetal_re/ ) ) ) ) {
$line =~ s!^!//!;
} }
} elsif ($action eq "unset") { } elsif ($action eq "unset") {
if (!$done && $line =~ /^\s*#define\s*$name/) { if (!$done && $line =~ /^\s*#define\s*$name\b/) {
$line = '//' . $line; $line = '//' . $line;
$done = 1; $done = 1;
} }
} elsif (!$done && $action eq "set") { } elsif (!$done && $action eq "set") {
if ($line =~ m!^(?://)?\s*#define\s*$name!) { if ($line =~ m!^(?://)?\s*#define\s*$name\b!) {
$line = "#define $name"; $line = "#define $name";
$line .= " $value" if defined $value && $value ne ""; $line .= " $value" if defined $value && $value ne "";
$line .= "\n"; $line .= "\n";
$done = 1; $done = 1;
} }
} elsif (!$done && $action eq "get") {
if ($line =~ /^\s*#define\s*$name(?:\s+(.*?))\s*(?:$|\/\*|\/\/)/) {
$value = $1;
$done = 1;
}
} }
print $config_write $line; if (defined $config_write) {
print $config_write $line or die "write $config_file: $!\n";
}
} }
close $config_write; # Did the set command work?
if ($action eq "set" && $force_option && !$done) {
warn "configuration section not found" if ($action eq "full" && !$done); # If the force option was set, append the symbol to the end of the file
warn "$name not found" if ($action ne "full" && !$done); my $line = "#define $name";
$line .= " $value" if defined $value && $value ne "";
$line .= "\n";
$done = 1;
print $config_write $line or die "write $config_file: $!\n";
}
if (defined $config_write) {
close $config_write or die "close $config_file: $!\n";
}
if ($action eq "get") {
if ($done) {
if ($value ne '') {
print "$value\n";
}
exit 0;
} else {
# If the symbol was not found, return an error
exit 1;
}
}
if ($action eq "full" && !$done) {
die "Configuration section was not found in $config_file\n";
}
if ($action ne "full" && $action ne "unset" && !$done) {
die "A #define for the symbol $name was not found in $config_file\n";
}
__END__ __END__