> "Radu Hobincu" writes:
>
>> However, now I have another problem. I have 2 instructions in the ISA:
>> 'where' and 'endwhere' which modify the behavior of the instructions put
>> in between them. I made a macro with inline assembly for e
ou can see that the `nop,endwhere` and the `iadd ...` insns are inverted.
I think this is similar to having instructions for enabling and disabling
interrupts: the instructions have no operands, but the compiler shouldn't
move the block in between them for optimization.
Thank you, and please,
Hello again,
I have another, quick question: I have dedicated logical instructions in
my RISC machine (lt - less than, gt - greater than, ult - unsigned less
than, etc.). I'm also working on adding instructions for logical OR, AND,
NOT, XOR. While reading GCC internals, I've stumbled on this:
"Ex
> "Radu Hobincu" writes:
>
>>>> 2. I have another piece of code that fails to compile with -O3.
>>>>
>>>> -
>>>> struct desc{
>>>>int int1;
>>>>int int2;
&g
> "Radu Hobincu" writes:
>
>> 1. I have the following code:
>>
>> ---
>> extern void doSmth();
>>
>> void bugTest(){
>> doSmth();
>> }
>> ---
>>
>> It com
Hello,
I wrote here before a few months ago, I'm trying to port GCC to a simple
RISC machine and I have two problems I don't seem to be able to fix. I'm
using gcc 4.4.3 for both compiling and as source code.
1. I have the following code:
---
extern void doSmth();
voi
> "Radu Hobincu" writes:
>
>> The compiler crashes with "Segmentation fault".
>
>> 2. When I try "char c = 'c';", the compiler fails an assert:
>
> It's time to break out the debugger and look at the source code and
> f
Hello again,
I managed to get the thing working and I have two last issues to solve.
1. My machine does not have any kind of floating point instructions. When
I write in the C source code
float f = 0.5f;
The compiler crashes with "Segmentation fault". Running a gdb on it, the
output becomes
Pr
es of the operands at compile time, so it doesn't really set
any flags in the condition register. How does it work then?
Sorry for the large text and thanks again for your time.
> "Radu Hobincu" writes:
>
>> I have written here a few weeks ago regarding some tutori
Hello again,
I have written here a few weeks ago regarding some tutorials on GCC
porting and got some very interesting replies. However, I seem to have
gotten stuck with a couple of issues in spite of my massive Googling, and
I was wondering if anyone could spare a couple of minutes for some
clari
Hello again and thank you a lot for the quick replies! I am impressed by
the number of mails I got in such a short time. You helped us loads.
I will also try to document our work every step of the way, maybe it will
help someone else in the future.
Regards,
Radu
Hello,
My name is Radu Hobincu, I am part of a team at "Politehnica" University
of Bucharest that is developing a massive parallel computing architecture
and currently my job is to port the GCC compiler to this new machine.
I've been looking over the GCC official site at http://g
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