With register calling convention (which is the default calling convention
in FPC 2.x), it can be reduced just to:
function brol(b: byte; c: byte): byte; assembler; inline;
asm
rolb %cl,%al
end;
(and similarly for all the other functions). The first parameter goes to
eax, the second to
On 24 mei 2006, at 16:11, Пётр Косаревский wrote:
function brol(b: byte; c: byte): byte; assembler; inline;
asm
rolb %cl,%al
end;
(and similarly for all the other functions). The first parameter
goes to
eax, the second to ecx, and the result is supposed to be in eax
again.
Tomas
With register calling convention (which is the default calling convention
in FPC 2.x), it can be reduced just to:
function brol(b: byte; c: byte): byte; assembler; inline;
asm
rolb %cl,%al
end;
(and similarly for all the other functions). The first parameter goes to
eax, the second to
On 24 mei 2006, at 17:09, Пётр Косаревский wrote:
function brol(b: byte; c: byte): byte; assembler; inline;
asm
rolb %cl,%al
end;
(and similarly for all the other functions). The first parameter
goes to
eax, the second to ecx, and the result is supposed to be in eax
again.
Tomas
Did
Jonas Maebe wrote:
On 24 mei 2006, at 17:09, Đ#65533;Ń#65533;Ń#65533;Ń#65533;
Đ#65533;ĐžŃ#65533;Đ°Ń#65533;овŃ#65533;киК wrote:
function brol(b: byte; c: byte): byte; assembler; inline;
asm
rolb %cl,%al
end;
(and similarly for all the other functions). The first parameter
goes to
L There is this page which might help some
L http://www.merlyn.demon.co.uk/del-bits.htm
Thank you, it was interesting.
But it was not very helpful.
It's interesting, that they don't seem to care much about rotating
bytes or words. (Asm rotating 64-bits was fascinating!)
