I'm not planning to add 20-bit data instructions, nor 20-bit function pointers. I will only have 16-bit function pointers. Those functions will be forced to be located in the lower 64K
Best regards, Oszkar Grant Edwards <[email protected]> Sent by: [email protected] 04/13/2007 05:32 PM Please respond to "GCC for MSP430 - http://mspgcc.sf.net"; <[email protected]> To [email protected] cc Subject Re: [Mspgcc-users] mspcgg to support MSP430X On 2007-04-13, Oszkar Ambrus <[email protected]> wrote: > Ok, thank you very much. > Then probably I'll start working on that, after adding 'calla' to the > compiler. > > I'm not planning to add 20-bit data instructions to the compiler, because > that would be very hard, and mostly useless. Without 20-bit data instructions, how does one manipulate "far pointers"? Are there 32 bit pointers to code and 16 bit pointers to data? Using 32-bit pointer arithmetic instead of 20-bit seems a bit wasteful. > What I intend to do is add only tha calla and reta to support > 1Mb of code size. So no pointers to functions? > What I ran into is that the msp430.c nor the msp430.md do not > use an emit_call instruction, like other architectures do. > That complicates things a lot. I do not know where to make it > use a 20-bit call, if I implement that in binutils. > > So I'd like to see first, that it does generate the correct > assembler code, and than add the binutils functionality. -- Grant Edwards grante Yow! Have my two-tone, at 1958 Nash METRO brought visi.com around... ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Mspgcc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mspgcc-users
