On 2017-08-07 18:20, Augusto Fraga Giachero wrote: > PIC microcontrollers (PIC12/PIC14/PIC16) doesn't have a general purpose > stack (it has a hardware stack used only to sub-routines and interrupts > return). I don't known how the sdcc implements local variables for these > targets (may be a software stack or fixed allocation). > > Augusto
The compiler allocates memory from the general purpose registers, as far as I can see. But the names may change if another variable is defined or the order of definition is changed. > > On 08/06/2017 07:12 PM, Maarten Brock wrote: >>> Access to global variable is no problem, just use _varname, but how can >>> I access local variables? Is there no other way than using the >>> compiler-generated names (which may change if the code is changed)? >>> >>> BR >>> Erlo >> This highly depends on the target and compiler options. Local >> variables on >> stack don't even have a name in assembler. >> >> Hav you considered using static variables? >> >> Maarten Not static, but a global variable. The issue with both approaches is the variable can not be overlayed/reused in another function and memory is sparse in the small PICs. Erlo ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
