size.rb

#!/usr/bin/env ruby

require 'pp'

D = Struct.new(:sec, :size, :name)

target = ARGV.shift

sram = `arm-none-eabi-objdump -t '#{target}'`.chomp.split(/\n/).
	select {|l| /\.(bss|data)|vectors/ =~ l }.
	map {|l|
		p l
		sec, size0 = *l.split(/\t/)
		size, name = *size0.split(/\s+/) if size0
		D.new(sec, size.to_i(16), name)
	}

total = sram.map {|i| i.size }.reduce {|r,i| r + i}

sram.sort_by {|i|
	i.size
}.each { |i|
	puts "% 3d%% % 10d %s" % [i.size.to_f / total * 100, i.size, i.name]
}
puts "total: %d bytes" % total

sram, flash = *`arm-none-eabi-size -A '#{target}'`.chomp.split(/\n/)[2..-2].
	map {|l| l.split(/\s+/) }.
	select {|(n,_,a)| n != '.heap' && a != "0" }.
	group_by {|(name,size,address)| address.start_with?('5368') }.
	values_at(true, false).
	map {|s| s.inject(0) {|r,i| r + i[1].to_i}  }


MAX_SRAM = 16 * 1024
MAX_FLASH = 128 * 1024
puts "sram:  %d/%d (%d%%)" % [ sram, MAX_SRAM, sram.to_f / MAX_SRAM * 100 ]
puts "flash: %d/%d (%d%%)" % [ flash, MAX_FLASH, flash.to_f / MAX_FLASH * 100 ]