2008-06-25 03:33:36 -04:00
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/* Test .type directives on assembler functions.
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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/* This apparently trivial test is designed to detect missing .type and
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.size directives in asm code, per the problem described under
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GMP_ASM_TYPE in acinclude.m4.
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A failure can be provoked in a shared or shared+static build by making
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TYPE and SIZE in config.m4 empty, either by editing it or by configuring
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with
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./configure gmp_cv_asm_type= gmp_cv_asm_size=
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mpn_add_n is used for the test because normally it's implemented in
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assembler on a CPU that has any asm code.
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Enhancement: As noted with GMP_ASM_TYPE, if .type is wrong but .size is
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right then everything works, but uses code copied down to the mainline
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data area. Maybe we could detect that if we built a test library with an
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object that had .size deliberately disabled. */
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int
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main (void)
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{
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static const mp_limb_t x[3] = { 1, 2, 3 };
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static const mp_limb_t y[3] = { 4, 5, 6 };
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static const mp_limb_t want[3] = { 5, 7, 9 };
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mp_limb_t got[3];
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mpn_add_n (got, x, y, (mp_size_t) 3);
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if (refmpn_cmp (got, want, (mp_size_t) 3) != 0)
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{
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printf ("Wrong result from mpn_add_n\n");
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abort ();
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}
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exit (0);
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}
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