[Icc-avr] Const arrays of pointers to const arrays

[Björn Lindgren]

Can someone tell me how to define a constant array of pointers to other 
constant arrays.
I can do this in assembler but I want the customer to take over the 
maintenance and therefore
I wish to have 100% of the code in C.

Here’s a condensed version:

// pointer_test.c

const signed char sinus_tab[2][3] = {
{1,2,3},{4,5,6}};

/*** Viritual definition (I want something like this)
const signed char *pointer[2]  = {
	sinus_tab[1],
	&sinus_tab[0][0]  };*/

// Working declaration (while the definition is done in assembler)
extern const unsigned int pointer[2];

// Usage:
const signed char *get_pointer( unsigned char index )  {

	return (void *)pointer[ index ];
}
In assenmler (i.e. wanted result):
	.area lit(rom, con, rel)
_pointer::
	.word _sinus_tab+3
	.word _sinus_tab

The first constant array (sinus_tab) is ok but the second either
ends up in ‘idata’ (initiated SRAM) or, I get error message like:

cast from `pointer to const signed char' to `unsigned int' is illegal in 
constant expressions

Thanx for help
Björn Lindgren

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