x86, build: replace Perl script with Shell script

suffix-$(CONFIG_KERNEL_LZ4) 	:= lz4

RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \

	     perl $(srctree)/arch/x86/tools/calc_run_size.pl)

	     $(CONFIG_SHELL) $(srctree)/arch/x86/tools/calc_run_size.sh)

quiet_cmd_mkpiggy = MKPIGGY $@

      cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false )

#!/usr/bin/perl

#

# Calculate the amount of space needed to run the kernel, including room for

# the .bss and .brk sections.

#

# Usage:

# objdump -h a.out | perl calc_run_size.pl

use strict;

my $mem_size = 0;

my $file_offset = 0;

my $sections=" *[0-9]+ \.(?:bss|brk) +";

while (<>) {

	if (/^$sections([0-9a-f]+) +(?:[0-9a-f]+ +){2}([0-9a-f]+)/) {

		my $size = hex($1);

		my $offset = hex($2);

		$mem_size += $size;

		if ($file_offset == 0) {

			$file_offset = $offset;

		} elsif ($file_offset != $offset) {

			# BFD linker shows the same file offset in ELF.

			# Gold linker shows them as consecutive.

			next if ($file_offset + $mem_size == $offset + $size);

			printf STDERR "file_offset: 0x%lx\n", $file_offset;

			printf STDERR "mem_size: 0x%lx\n", $mem_size;

			printf STDERR "offset: 0x%lx\n", $offset;

			printf STDERR "size: 0x%lx\n", $size;

			die ".bss and .brk are non-contiguous\n";

		}

	}

}

if ($file_offset == 0) {

	die "Never found .bss or .brk file offset\n";

}

printf("%d\n", $mem_size + $file_offset);

#!/bin/sh

#

# Calculate the amount of space needed to run the kernel, including room for

# the .bss and .brk sections.

#

# Usage:

# objdump -h a.out | sh calc_run_size.sh

NUM='\([0-9a-fA-F]*[ \t]*\)'

OUT=$(sed -n 's/^[ \t0-9]*.b[sr][sk][ \t]*'"$NUM$NUM$NUM$NUM"'.*/\1\4/p')

if [ -z "$OUT" ] ; then

	echo "Never found .bss or .brk file offset" >&2

	exit 1

fi

OUT=$(echo ${OUT# })

sizeA=$(printf "%d" 0x${OUT%% *})

OUT=${OUT#* }

offsetA=$(printf "%d" 0x${OUT%% *})

OUT=${OUT#* }

sizeB=$(printf "%d" 0x${OUT%% *})

OUT=${OUT#* }

offsetB=$(printf "%d" 0x${OUT%% *})

run_size=$(( $offsetA + $sizeA + $sizeB ))

# BFD linker shows the same file offset in ELF.

if [ "$offsetA" -ne "$offsetB" ] ; then

	# Gold linker shows them as consecutive.

	endB=$(( $offsetB + $sizeB ))

	if [ "$endB" != "$run_size" ] ; then

		printf "sizeA: 0x%x\n" $sizeA >&2

		printf "offsetA: 0x%x\n" $offsetA >&2

		printf "sizeB: 0x%x\n" $sizeB >&2

		printf "offsetB: 0x%x\n" $offsetB >&2

		echo ".bss and .brk are non-contiguous" >&2

		exit 1

	fi

fi

printf "%d\n" $run_size

exit 0