mpn/x86_64/dos64.m4

divert(-1)
dnl  Copyright 2011-2013 Free Software Foundation, Inc.

dnl  This file is part of the GNU MP Library.
dnl
dnl  The GNU MP Library is free software; you can redistribute it and/or modify
dnl  it under the terms of either:
dnl
dnl    * the GNU Lesser General Public License as published by the Free
dnl      Software Foundation; either version 3 of the License, or (at your
dnl      option) any later version.
dnl
dnl  or
dnl
dnl    * the GNU General Public License as published by the Free Software
dnl      Foundation; either version 2 of the License, or (at your option) any
dnl      later version.
dnl
dnl  or both in parallel, as here.
dnl
dnl  The GNU MP Library is distributed in the hope that it will be useful, but
dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dnl  for more details.
dnl
dnl  You should have received copies of the GNU General Public License and the
dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
dnl  see https://www.gnu.org/licenses/.

define(`HOST_DOS64')


dnl  On DOS64 we always generate position-independent-code
dnl

define(`PIC')


define(`LEA',`
	lea	$1(%rip), $2
')


dnl  Usage: CALL(funcname)
dnl
dnl  Simply override the definition in x86_64-defs.m4.

define(`CALL',`call	GSYM_PREFIX`'$1')
define(`TCALL',`jmp	GSYM_PREFIX`'$1')


dnl  Usage: JUMPTABSECT

define(`JUMPTABSECT', `RODATA')


dnl  Usage: JMPENT(targlabel,tablabel)

define(`JMPENT', `.long	$1-$2')


dnl  Usage: FUNC_ENTRY(nregparmas)
dnl  Usage: FUNC_EXIT()

dnl  FUNC_ENTRY and FUNC_EXIT provide an easy path for adoption of standard
dnl  ABI assembly to the DOS64 ABI.

define(`FUNC_ENTRY',
	`push	%rdi
	push	%rsi
	mov	%rcx, %rdi
ifelse(eval($1>=2),1,`dnl
	mov	%rdx, %rsi
ifelse(eval($1>=3),1,`dnl
	mov	%r8, %rdx
ifelse(eval($1>=4),1,`dnl
	mov	%r9, %rcx
')')')')

define(`FUNC_EXIT',
	`pop	%rsi
	pop	%rdi')


dnl  Target ABI macros.  For DOS64 we override the defaults.

define(`IFDOS',   `$1')
define(`IFSTD',   `')
define(`IFELF',   `')


dnl  Usage: PROTECT(symbol)
dnl
dnl  Used for private GMP symbols that should never be overridden by users.
dnl  This can save reloc entries and improve shlib sharing as well as
dnl  application startup times

define(`PROTECT',  `')


divert`'dnl