libfp is a msp430 specific stuff which I wrote in basense of optimized float point library. The thing you have to do is just -lfp on a linker stage (befoe -lgcc if you're passing that)
you can check if libfp linked with msp430-readelf. ~d On Friday 28 March 2003 16:06, Mark Stokes wrote: > I do not see references to "libfp" in doc.txt, nor can I find much w/ > google. I have looked in the windows release of mspgcc, but didn't find > this library anywhere either. Is there a good place to look for info on > this library? I have one function in particular that uses quite a bit > of floating point calls and would love to have this optimized further. > When I include the -lfp command line switch, it doesn't make any > difference in the code size at all (although, it didn't give me any > errors/warnings either). How do I know the libfp is being linked? > Sorry, I am not too familiar w/ the gnu toolchain. > > Thanks for the info on the max stack size! I assumed you are grepping in > the .elf file for the max size keyword (since I found it there). > > -Mark Stokes > > > -----Original Message----- > From: mspgcc-users-ad...@lists.sourceforge.net > [mailto:mspgcc-users-ad...@lists.sourceforge.net] On Behalf Of Dmitry > Sent: Friday, March 28, 2003 6:41 AM > To: mspgcc-users@lists.sourceforge.net > Subject: Re: [Mspgcc-users] Re: Ram usage of MSP430 > > > For floating calculations you can check libfp (which comes with libc and > links > with -lfp flag). This is not broadly tested, yet works for most (my :) > applications. This will dramatically reduce stack usage for floats. > > As for stack checking... > Compile your sources with -S flag, then grep on "frame size" - > this will show max stack required (excluding libraries of course). > > And another way - do the same as on 8031. > > ~d > > On Friday 28 March 2003 14:08, Saso Zbontar wrote: > > Dmitry, > > > > thanks for prompt answer, I found out two minutes > > after I posted a mail how to do that. I am using 166 bytes > > of bss, but I am overlaping my variables with stack (using > > over 90 bytes for stack as far I was able to found with GDB tool) > > I am doing some floating calculations :-) > > Is there any way or tool to calculate the amount of stack size > > the program is using? > > > > On 8031 I `ve done that with some extra lines > > of program in timer interrupt, just to transfer > > stack pointer to a variable which you can check > > after some time of running the program, but i believe > > it has to be easier way to do it on MSP430. > > > > Regards > > Saso > > > > ----- Original Message ----- > > From: Saso Zbontar > > To: mspgcc-users@lists.sourceforge.net > > Sent: Wednesday, March 26, 2003 3:31 PM > > Subject: Ram usage of MSP430 > > > > > > Hi, > > > > How to find out how much RAM is used on target > > processor when I compile the program or to find out > > how much RAM has the compiler reserved for variables > > defined in my program. For example: according to my > > calculations I am using about 120 bytes of RAM on MSP430f413 > > but something odd hapens when i run the program. I think some > > variables are overlaping. Stack is set to default value ( 0x0300 ) > > > > Any Ideas? > > > > Regards Saso -- /******************************************************************** ("`-''-/").___..--''"`-._ (\ Dimmy the Wild UA1ACZ `6_ 6 ) `-. ( ).`-.__.`) Enterprise Information Sys (_Y_.)' ._ ) `._ `. ``-..-' Nevsky prospekt, 20 / 44 _..`--'_..-_/ /--'_.' ,' Saint Petersburg, Russia (il),-'' (li),' ((!.-' +7 (812) 3468202, 5585314 ********************************************************************/
