Do not pass _etext, _edata, etc. to asm() operands.
Put them in asm code.
The result assembly should look like
mov #_etext,r15
If you really want to put a pointer to _etext somewhere, just do the
following:
extern int _etext;
int x;
x = &_etext;
cheers,
~d
On Tuesday 26 October 2004 19:09, Dieter Teuchert wrote:
> Does anybody know how to insert a pointer into an inline assembler
> sequence? The following works but loads registers R13..R15 with data not
> with pointers.
>
> void _reset_vector__(void) {
>
> ...
> // zero uninitialized RAM
> asm( " \n\
> mov %0,r15 ; load r15 with end of .text segment \n\
> mov %1,r14 ; load ram start \n\
> mov %2,r13 ; end of data segment \n\
> cmp r14,r13 \n\
> jeq Lend_of_data_loop \n\
> Lcopy_data_loop: \n\
> ; copy data from @r15 to @r14 \n\
> mov.b @r15+,@r14 ; move one byte \n\
> inc r14 \n\
> cmp r13,r14 ; check if end of data reached \n\
> jlo Lcopy_data_loop \n\
> Lend_of_data_loop: \n\
> "
>
> : "m" (_etext), "m" (__data_start), "m" (_edata)
> : "r13", "r14", "r15");
>
> ...
> }
>
> I tried the sequence "i" (&_etext) , but that is an error.
> Thanks in advance!
>
>
>
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