Re: static initializer

I just created the 'Hello World' default C++ project from the MPC555 
stationary. I normally use C.
It compiles to 86kb. The MPC555 only has 26kb of RAM.

Wow, I never realised C++ was so memory intensive...

Ian

--- In [email protected], "coles555" <coles555@y...> wrote:
>
> Hey guys,
> I have been stuck with this particular problem for quite some time 
> now. I would really appreciate any help. I have been working with 
the 
> PB555 board using Codewarrior. I have modified the initialization 
> files so that the code/variables would be located within the MPC555 
> memory space. However, for some reason the _ctors and _dtors 
doesn't 
> go inside the code/variable memory range I have specified. Is there 
> something special about the _ctors and _dtors variable? I don't 
> understand why all the other variables are within the memory range 
I 
> have specified but those are not. _ctors and _dtors are used for 
> calling static initializers and destructor function. Below is the 
> block of code that uses _ctors for static initializer. According to 
> the debugger, _ctors locates in memory address 0x00405340, which is 
> outside of the memory range for PB board. So Codewarrior gives me a 
> machine check exception.
> 
> 	/*
> 	 *	call static initializers
> 	 */
> 	for (constructor = _ctors; *constructor; constructor++) {
> 003FA45C: 3C600040  lis      r3,64
> 003FA460: 3BE35340  addi     r31,r3,21312
> 003FA464: 48000014  b        __init_cpp+0x28 (0x3fa478)
> 		(*constructor)();
> 003FA468: 819F0000  lwz      r12,0(r31)
> 003FA46C: 7D8903A6  mtctr    r12
> 003FA470: 4E800421  bctrl
> 	}
> 003FA474: 3BFF0004  addi     r31,r31,4
> 003FA478: 801F0000  lwz      r0,0(r31)
> 003FA47C: 28000000  cmplwi   r0,0x0000
> 003FA480: 4082FFE8  bne      __init_cpp+0x1c (0x3fa468)
> 
> }
> 003FA484: 83E1000C  lwz      r31,12(SP)
> 003FA488: 80010014  lwz      r0,20(SP)
> 003FA48C: 7C0803A6  mtlr     r0
> 003FA490: 38210010  addi     SP,SP,16
> 003FA494: 4E800020  blr
> 
> Any help would be greatly appreciated!
> Lei
>






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