t-asmtype.c
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上传日期:2022-08-06
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- /* Test .type directives on assembler functions.
- Copyright 2001 Free Software Foundation, Inc.
- This file is part of the GNU MP Library.
- The GNU MP Library is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser 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 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 Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include <stdio.h>
- #include <stdlib.h>
- #include "gmp.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_nn");
- abort ();
- }
- exit (0);
- }