How can I write inline assembler procedure?

(FPC accepts the word "inline", but generates "call" instruction etc.)

If there is a way, could anyone point to an example, please?

Or just remember rotating bits in fpc-devel (if I get it right, they were not implemented):

(it's i386, cyclic bitwise longword l shift to the left by c bits; c may be over 32)

function lrol(l: longword; c: byte): longword; assembler; inline; // this thing is not really inline asm
movb %dl,%cl
roll %cl,%eax

   end; // calling register conventions: l->eax, c->dl

(it generates
.globl P$P_LROL$LONGWORD$BYTE$$LONGWORD
P$P_LROL$LONGWORD$BYTE$$LONGWORD:
# Temps allocated between ebp-4 and ebp-4
# Register ebp allocated
pushl %ebp
movl %esp,%ebp
subl $4,%esp
# Var l located in register
# Var c located in register
# Temp -4,4 allocated
# Var $result located at ebp-4
# Register eax,ecx,edx allocated
# [97] movb %dl,%cl
movb %dl,%cl
# [98] roll %cl,%eax
roll %cl,%eax
# Register eax,ecx,edx released
# Temp -4,4 released
leave
# Register ebp released
ret
# Register eax released

and

(moving variables, which could already be in registers) call P$P_LROL$LONGWORD$BYTE$$LONGWORD

where it is expected to be inlined)

Currently you cannot inline assembler routines, it is a known restriction.

Michael.

If nothing else, you can skip the stack frame generation using "nostackframe" keyword. Not that it would help that much probably...

Tomas

> Currently you cannot inline assembler routines, it is a known restriction.

I didn't get this one message.

If nothing else, you can skip the stack frame generation using "nostackframe" keyword. Not that it would help that much probably... Tomas

Oh, well.

Thanks for the answers.

Пётр Косаревский wrote

How can I write inline assembler procedure? (FPC accepts the word "inline", but generates "call" instruction etc.)

Inline is only a recommendation.

If there is a way, could anyone point to an example, please?

Inlining assembler procedures efficently is rather hard, so we don't do so currently.