/* Test .type directives on assembler functions.

Copyright 2001 Free Software Foundation, Inc.

This file is part of the GNU MP Library test suite.

The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.

The GNU MP Library test suite is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
Public License for more details.

You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */

#include <stdio.h>
#include <stdlib.h>

#include "gmp-impl.h"

#include "tests.h"


/* This apparently trivial test is designed to detect missing .type and
   .size directives in asm code, per the problem described under
   GMP_ASM_TYPE in acinclude.m4.

   A failure can be provoked in a shared or shared+static build by making
   TYPE and SIZE in config.m4 empty, either by editing it or by configuring
   with

       ./configure gmp_cv_asm_type= gmp_cv_asm_size=

   mpn_add_n is used for the test because normally it's implemented in
   assembler on a CPU that has any asm code.

   Enhancement: As noted with GMP_ASM_TYPE, if .type is wrong but .size is
   right then everything works, but uses code copied down to the mainline
   data area.  Maybe we could detect that if we built a test library with an
   object that had .size deliberately disabled.  */

int
main (void)
{
  static const mp_limb_t x[3]    = { 1, 2, 3 };
  static const mp_limb_t y[3]    = { 4, 5, 6 };
  static const mp_limb_t want[3] = { 5, 7, 9 };
  mp_limb_t  got[3];

  mpn_add_n (got, x, y, (mp_size_t) 3);

  if (refmpn_cmp (got, want, (mp_size_t) 3) != 0)
    {
      printf ("Wrong result from mpn_add_n\n");
      abort ();
    }

  exit (0);
}