Re: How to detect user uses -masm=intel?

[Hongtao Liu via Gcc]

On Thu, Jul 29, 2021 at 10:49 AM unlvsur unlvsur via Gcc
<gcc@gcc.gnu.org> wrote:
>
> What I mean is that what macro GCC sets when it compiles -masm=intel
>
>
> Int main()
> {
> #ifdef /*__INTEL_ASM????*/
>                 printf(“intel”);
> #else
>                 printf(“at&t”);
> #endif
> }
not fully understand what you're seeking, probably you're looking for
ASSEMBLER_DIALECT.

cut from i386.c
---------------
void
ix86_print_operand (FILE *file, rtx x, int code)
{
  if (code)
    {
      switch (code)
{
case 'A':
  switch (ASSEMBLER_DIALECT)
    {
    case ASM_ATT:
      putc ('*', file);
      break;

    case ASM_INTEL:
      /* Intel syntax. For absolute addresses, registers should not
be surrounded by braces.  */
      if (!REG_P (x))
{
  putc ('[', file);
  ix86_print_operand (file, x, 0);
  putc (']', file);
  return;
}
      break;
--------------

> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>
> From: Andrew Pinski<mailto:pins...@gmail.com>
> Sent: Wednesday, July 28, 2021 21:43
> To: unlvsur unlvsur<mailto:unlv...@live.com>
> Cc: gcc@gcc.gnu.org<mailto:gcc@gcc.gnu.org>
> Subject: Re: How to detect user uses -masm=intel?
>
> On Wed, Jul 28, 2021 at 6:41 PM unlvsur unlvsur via Gcc <gcc@gcc.gnu.org> 
> wrote:
> >
> > Any GCC macro that can tell the code it is using the intel format’s 
> > assembly instead of at&t??
>
> Inside the inline-asm you can use the alternative.
> Like this:
> cmp{b}\t{%1, %h0|%h0, %1}
>
> This is how GCC implements this inside too.
>
> Thanks,
> Andrew
>
> >
> > Sent from 
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> >
>


-- 
BR,
Hongtao