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Revision a90b1e32d2f697d1aa39b49038469e2ea40d5e7b authored by Adam Langley on 03 June 2013, 19:45:11 UTC, committed by Emilia Kasper on 19 August 2014, 15:09:27 UTC
Add volatile qualifications to two blocks of inline asm to stop GCC from
eliminating them as dead code.

Both volatile and "memory" are used because of some concern that the compiler
may still cache values across the asm block without it, and because this was
such a painful debugging session that I wanted to ensure that it's never
repeated.

(cherry picked from commit 7753a3a68431aa81b82beea4c3f5374b41454679)

Conflicts:
	crypto/bn/asm/x86_64-gcc.c

Reviewed-by: Rich Salz <rsalz@openssl.org>
1 parent 0ed8e95
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  • e_gmp_err.c
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e_gmp_err.c
/* e_gmp_err.c */
/* ====================================================================
 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

/* NOTE: this file was auto generated by the mkerr.pl script: any changes
 * made to it will be overwritten when the script next updates this file,
 * only reason strings will be preserved.
 */

#include <stdio.h>
#include <openssl/err.h>
#include "e_gmp_err.h"

/* BEGIN ERROR CODES */
#ifndef OPENSSL_NO_ERR

#define ERR_FUNC(func) ERR_PACK(0,func,0)
#define ERR_REASON(reason) ERR_PACK(0,0,reason)

static ERR_STRING_DATA GMP_str_functs[]=
	{
{ERR_FUNC(GMP_F_E_GMP_CTRL),	"E_GMP_CTRL"},
{ERR_FUNC(GMP_F_E_GMP_RSA_MOD_EXP),	"E_GMP_RSA_MOD_EXP"},
{0,NULL}
	};

static ERR_STRING_DATA GMP_str_reasons[]=
	{
{ERR_REASON(GMP_R_CTRL_COMMAND_NOT_IMPLEMENTED),"ctrl command not implemented"},
{ERR_REASON(GMP_R_KEY_CONTEXT_ERROR)     ,"key context error"},
{ERR_REASON(GMP_R_MISSING_KEY_COMPONENTS),"missing key components"},
{0,NULL}
	};

#endif

#ifdef GMP_LIB_NAME
static ERR_STRING_DATA GMP_lib_name[]=
        {
{0	,GMP_LIB_NAME},
{0,NULL}
	};
#endif


static int GMP_lib_error_code=0;
static int GMP_error_init=1;

static void ERR_load_GMP_strings(void)
	{
	if (GMP_lib_error_code == 0)
		GMP_lib_error_code=ERR_get_next_error_library();

	if (GMP_error_init)
		{
		GMP_error_init=0;
#ifndef OPENSSL_NO_ERR
		ERR_load_strings(GMP_lib_error_code,GMP_str_functs);
		ERR_load_strings(GMP_lib_error_code,GMP_str_reasons);
#endif

#ifdef GMP_LIB_NAME
		GMP_lib_name->error = ERR_PACK(GMP_lib_error_code,0,0);
		ERR_load_strings(0,GMP_lib_name);
#endif
		}
	}

static void ERR_unload_GMP_strings(void)
	{
	if (GMP_error_init == 0)
		{
#ifndef OPENSSL_NO_ERR
		ERR_unload_strings(GMP_lib_error_code,GMP_str_functs);
		ERR_unload_strings(GMP_lib_error_code,GMP_str_reasons);
#endif

#ifdef GMP_LIB_NAME
		ERR_unload_strings(0,GMP_lib_name);
#endif
		GMP_error_init=1;
		}
	}

static void ERR_GMP_error(int function, int reason, char *file, int line)
	{
	if (GMP_lib_error_code == 0)
		GMP_lib_error_code=ERR_get_next_error_library();
	ERR_PUT_error(GMP_lib_error_code,function,reason,file,line);
	}
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