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Annotation of OpenXM_contrib/gmp/tests/mpn/t-asmtype.c, Revision 1.1.1.1

1.1       ohara       1: /* Test .type directives on assembler functions.
                      2:
                      3: Copyright 2001 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the GNU MP Library.
                      6:
                      7: The GNU MP Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Lesser General Public License as published by
                      9: the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The GNU MP Library is distributed in the hope that it will be useful, but
                     13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Lesser General Public License
                     18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: MA 02111-1307, USA.
                     21: */
                     22:
                     23: #include <stdio.h>
                     24: #include <stdlib.h>
                     25:
                     26: #include "gmp.h"
                     27: #include "gmp-impl.h"
                     28:
                     29: #include "tests.h"
                     30:
                     31:
                     32: /* This apparently trivial test is designed to detect missing .type and
                     33:    .size directives in asm code, per the problem described under
                     34:    GMP_ASM_TYPE in acinclude.m4.
                     35:
                     36:    A failure can be provoked in a shared or shared+static build by making
                     37:    TYPE and SIZE in config.m4 empty, either by editing it or by configuring
                     38:    with
                     39:
                     40:        ./configure gmp_cv_asm_type= gmp_cv_asm_size=
                     41:
                     42:    mpn_add_n is used for the test because normally it's implemented in
                     43:    assembler on a CPU that has any asm code.
                     44:
                     45:    Enhancement: As noted with GMP_ASM_TYPE, if .type is wrong but .size is
                     46:    right then everything works, but uses code copied down to the mainline
                     47:    data area.  Maybe we could detect that if we built a test library with an
                     48:    object that had .size deliberately disabled.  */
                     49:
                     50: int
                     51: main (void)
                     52: {
                     53:   static const mp_limb_t x[3]    = { 1, 2, 3 };
                     54:   static const mp_limb_t y[3]    = { 4, 5, 6 };
                     55:   static const mp_limb_t want[3] = { 5, 7, 9 };
                     56:   mp_limb_t  got[3];
                     57:
                     58:   mpn_add_n (got, x, y, (mp_size_t) 3);
                     59:
                     60:   if (refmpn_cmp (got, want, (mp_size_t) 3) != 0)
                     61:     {
                     62:       printf ("Wrong result from mpn_add_n\n");
                     63:       abort ();
                     64:     }
                     65:
                     66:   exit (0);
                     67: }