Hello,
This is my first attempt at writing AT&T asm code and also 64 bit asm code:
The output is supposed to be 2^64 - 1 but it displays 2^32-1.
Did I program a bug ?
Or is the compiler bugged ?
Maybe writeln bugged ?
What's wrong ?
// *** Begin of Code ***
program HelloWorld;
{$mode delphi}
var
test : int64;
begin
writeln('Hello Free Pascal World !');
asm
mov $10, %eax
mov %eax, test // no size warnings, kinda nice ;) or could it hide bugs
in the future ?
end;
writeln('Test: ', test );
asm
mov $100, %eax
mov %eax, test
end;
writeln('Test: ', test );
// $7FFFFFFFFFFFFFFF not recognized.
// bug: only lower bits moved ?
// $100 is this hexadecimal 100 or decimal 100 ?
// the test above shows 100.. I guess 100 decimal then...
// somewhere below is a bug: 4294967295
// maybe move instruction is only 32 bits ?
// maybe rax is only 32 bits.. but isn't it 64 bits ?
asm
mov $9223372036854775807, %rax
mov %rax, test
end;
writeln('Test: ', test );
readln;
end.
// *** End of Code ***
Bye,
Skybuck.
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