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Dimitrios Orfanos wrote:

Hi,
OK thanks about the answer. Another question now about your toolchain.
When I compile programs with the or32-elf-gcc, that have reference to the 
library the program is compiled without problem. When, I try to compile 
programs that don't have reference to the library the program doesn't 
compile.
For example the following program:
----------------------------
int f(int i)
{
return i+1;
}
int main()
{
return f(-1);
}
----------------------------
When I try to compile it with the command:
"or32-elf-gcc -o another another.c "
I take the following message:
"/home/dimitrios/drp-0.6/toolchain/install/bin/../lib/gcc/or32-elf/4.2.1/../../../../or32-elf/lib/libc.a(lib_a-sbrkr.o): 
In function `_sbrk_r':
/home/dimitrios/drp-0.6/toolchain/build/newlib-1.15.0.elf/or32-elf/newlib/libc/reent/../../../../../../src/newlib-1.15.0/newlib/libc/reent/sbrkr.c:60: 
undefined reference to `_sbrk'
collect2: ld returned 1 exit status
"
On Friday 23 November 2007 18:20:50 Mark wrote:
> Dimitrios Orfanos wrote:
> > Hi,
> >
> > I am trying to modify or1ksim 0.2.0 in order to produce statistics about
> > the cycles that are consumed per instruction. In the code are defined
> > three different modes of execution the DYNAMIC, the COMPLEX and the
> > SIMPLE. Can you explain me the difference?
> >
> > DO
>
> I don't actually know the difference, but here's what I would guess
> based on looking at the code.
>
> SIMPLE_EXECUTION: slow instruction decoding (the automata for matching
> opcodes are executed at runtime)
> COMPLEX_EXECUTION: fast instruction decoding (a fast decoder is
> generated from the automata and compiled into the simulator)
> DYNAMIC_EXECUTION: instructions are dynamically recompiled from or32
> opcodes to opcodes for the host architecture (i386-only, I think)
>
> The relevant source seems to be concentrated in cpu/or32/execute.c,
> cpu/or32/generate.c, cpu/or32/insnset.c, cpu/or32/dyngen*
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