Hi All ! During use of .noinit section I found that it is very useful to have a constant that is the offset between variable addres in .noinit section (RAM) and address of variable initializer (in ROM). E.g. __noinit_rom_offset=__noinit_start_rom-__noinit_start
You can imlement a function for retrieve default values for any .noinit variable: //Somewhere in th .h file #define NoinitDefault(v) __NoinitDefault(v,sizeof(v)) ; function source .global __NoinitDefault .func __NoinitDefault __NoinitDefault: ; Address of noinit variable in RAM is in R15, variable size is in R14 mov.w r15,r13 ; noinit data in flash start add.w #__noinit_rom_offset,R13 ; variable initializer address is in R13 .Lcopy_noinit_loop: mov.b @r13+,@r15 ; initialize noinit variable with default value inc.w r15 dec.w r14 jnz .Lcopy_noinit_loop .endfunc I have patched ldscripts with string at the bottom of the files (elf32msp430.sc, elf32msp430_3.sc) PROVIDE (__noinit_rom_offset = _etext + SIZEOF (.data)-__noinit_start ) ; What do you think about this feature ? All the best, Oleg.
