ASCII Text to I8HEX Format Converter

On 2008-05-06, lowcost <die.spam@invalid.com> wrote:
> Grant Edwards ha scritto:
>> If you want to relocate the output data to an address other
>> than that of the input data [files of type "binary" have an
>> implicit address of 0], you use the --change-addresses option:
>> 
>> $ objcopy -I binary -O ihex --change-addresses=0x5555 asdf.txt asdf.hex
>
> thank you Grant , this seems to be a quite right answer to the
> original question from Dohzer. please explain me how to obtain
> these two .hex records ( "qwerty" at address 0x22 ) from ascii
> .txt , under windows, avoiding record type 0x03 in I8HEX : it
> will be useful for me too.
>
>:060022007177657274792C
>:00000001FF

I don't see why you are about the start record, but it's
trivial to delete it:

$ echo -n qwerty >qwerty.txt
$ objcopy --change-address=0x22 -I binary -O ihex qwerty.txt qwerty.hex
$ sed -i '/^:04000003.*$/d' qwerty.hex
$ cat qwerty.hex
:060022007177657274792C
:00000001FF

You can put the objcopy and sed commands in a shell script so
they can be used as a "single command" if you want. If you're
crippled by Windows, you can install Cygwin to get a usable
shell and set of command-line utilities.

You can do the same thing with srecord, but since objcopy
"comes with" the Gnu toolchain and can also manipulate ELF
files, I tend to use it more often.

-- 
Grant Edwards                   grante             Yow! Sometime in 1993
                                  at               NANCY SINATRA will lead a
                               visi.com            BLOODLESS COUP on GUAM!!

lowcost <die.spam@invalid.com> writes:

> please explain me how to obtain these two .hex records ( "qwerty" at
> address 0x22 ) from ascii .txt , under windows, avoiding record type
> 0x03 in I8HEX :  it will be useful for me too.
>
> :060022007177657274792C
> :00000001FF


Stick in a assembly source file (qwerty.s):

        .section ".rodata"
        .ascii "qwerty"
        .end

Run it through an assembler, presumably a cross assembler for your
target architecture or the same byte ordering as your target (to
create a .o file), a linker with a linker script to set the rodata
section origin to 0x22 (to create an .elf file) and run objdump using
the -Oihex option (to create the .hex file).

Petter

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