http://forums.leaflabs.com/topic.php?id=808 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:15:57 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=808#post-4856 Fri, 27 May 2011 17:47:44 +0000 mbolivar 4856@http://forums.leaflabs.com/ <p>BSS:</p> <p><a href="http://en.wikipedia.org/wiki/.bss" rel="nofollow">http://en.wikipedia.org/wiki/.bss</a></p> <p>(Goes in SRAM)</p> <p>Data:</p> <p><a href="http://en.wikipedia.org/wiki/Data_segment" rel="nofollow">http://en.wikipedia.org/wiki/Data_segment</a></p> <p>(Goes in SRAM)</p> <p>Text:</p> <p><a href="http://en.wikipedia.org/wiki/Code_segment" rel="nofollow">http://en.wikipedia.org/wiki/Code_segment</a></p> <p>(Goes in Flash, so watch out, self-modifying code). </p> http://forums.leaflabs.com/topic.php?id=808#post-4855 Fri, 27 May 2011 17:35:54 +0000 robodude666 4855@http://forums.leaflabs.com/ <p>Hey guys,</p> <p>I've noticed that every time to compile the size information about each object file and the elf binary are shown, for example:</p> <pre><code>Object file sizes: text data bss dec hex filename 356 4 0 360 168 build/main.o 212 24 0 236 ec build/usr/local/libmaple/libmaple/adc.o 193 8 0 201 c9 build/usr/local/libmaple/libmaple/bkp.o 0 0 0 0 0 build/usr/local/libmaple/libmaple/dac.o 736 68 0 804 324 build/usr/local/libmaple/libmaple/dma.o ..... 22928 2700 224 25852 64fc (TOTALS) Final Size: text data bss dec hex filename 13320 1796 416 15532 3cac build/maple.elf</code></pre> <p>What exactly do the columns mean? I can see that dec = text+data+bss, but what do each of the columns represent? Is Text the amount of FLASH space (in bytes) that will be consumed by the program, while data is the RAM (in bytes)? What is bss in that case?</p> <p>As I modify my application or refactor, I'd like to keep an eye on these figures and knowing what they mean is the beginning.</p> <p>-robodude666 </p>