Re: [avr-gcc-list] constant strings in FLASH

[Joerg Wunsch]

Tim Lapawa <address@hidden> wrote:

> After compiling and uploading it to a at90s8515. 
> The string is stored at the beginning of the FLASH at address $00000.

You must have done something wrong, but you didn't write how you
created your ELF (and then binary) file.

I recently posted the URL of a minimalistic AVR C file set, the file
demo.c there also contains strings in flash -- and they work as they
ought to.

$ avr-nm -n demo.out | grep ' [tT] '
00000000 t .__start_of_init__
0000001c T greeting
00000052 T quit_serial
00000080 T hello_serial
00000109 T watchdog
00000126 T snooze
00000136 T ee_done
00000148 t .__c_startup__
00000148 T _real_init_
....

As you can see, the first 0x1c bytes are being spared for the
interrupt vectors, followed by the __attribute__ ((progmem)) strings,
then the regular program text (i. e., executable code).

-- 
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/