Kenji Arai / mbed-os_TYBLE16

mbed-os5 only for TYBLE16

Dependents:   TYBLE16_simple_data_logger TYBLE16_MP3_Air

features/mbedtls/mbed-crypto/src/timing.c@0:5b88d5760320, 2019-12-17 (annotated)

Committer:
kenjiArai
Date:
Tue Dec 17 23:23:45 2019 +0000
Revision:
0:5b88d5760320
Child:
1:9db0e321a9f4
mbed-os5 only for TYBLE16

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:5b88d5760320 1 /*
kenjiArai 0:5b88d5760320 2 * Portable interface to the CPU cycle counter
kenjiArai 0:5b88d5760320 3 *
kenjiArai 0:5b88d5760320 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
kenjiArai 0:5b88d5760320 5 * SPDX-License-Identifier: Apache-2.0
kenjiArai 0:5b88d5760320 6 *
kenjiArai 0:5b88d5760320 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
kenjiArai 0:5b88d5760320 8 * not use this file except in compliance with the License.
kenjiArai 0:5b88d5760320 9 * You may obtain a copy of the License at
kenjiArai 0:5b88d5760320 10 *
kenjiArai 0:5b88d5760320 11 * http://www.apache.org/licenses/LICENSE-2.0
kenjiArai 0:5b88d5760320 12 *
kenjiArai 0:5b88d5760320 13 * Unless required by applicable law or agreed to in writing, software
kenjiArai 0:5b88d5760320 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kenjiArai 0:5b88d5760320 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kenjiArai 0:5b88d5760320 16 * See the License for the specific language governing permissions and
kenjiArai 0:5b88d5760320 17 * limitations under the License.
kenjiArai 0:5b88d5760320 18 *
kenjiArai 0:5b88d5760320 19 * This file is part of mbed TLS (https://tls.mbed.org)
kenjiArai 0:5b88d5760320 20 */
kenjiArai 0:5b88d5760320 21
kenjiArai 0:5b88d5760320 22 #if !defined(MBEDTLS_CONFIG_FILE)
kenjiArai 0:5b88d5760320 23 #include "mbedtls/config.h"
kenjiArai 0:5b88d5760320 24 #else
kenjiArai 0:5b88d5760320 25 #include MBEDTLS_CONFIG_FILE
kenjiArai 0:5b88d5760320 26 #endif
kenjiArai 0:5b88d5760320 27
kenjiArai 0:5b88d5760320 28 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_PLATFORM_C)
kenjiArai 0:5b88d5760320 29 #include "mbedtls/platform.h"
kenjiArai 0:5b88d5760320 30 #else
kenjiArai 0:5b88d5760320 31 #include <stdio.h>
kenjiArai 0:5b88d5760320 32 #define mbedtls_printf printf
kenjiArai 0:5b88d5760320 33 #endif
kenjiArai 0:5b88d5760320 34
kenjiArai 0:5b88d5760320 35 #if defined(MBEDTLS_TIMING_C)
kenjiArai 0:5b88d5760320 36
kenjiArai 0:5b88d5760320 37 #include "mbedtls/timing.h"
kenjiArai 0:5b88d5760320 38
kenjiArai 0:5b88d5760320 39 #if !defined(MBEDTLS_TIMING_ALT)
kenjiArai 0:5b88d5760320 40
kenjiArai 0:5b88d5760320 41 #if !defined(unix) && !defined(__unix__) && !defined(__unix) && \
kenjiArai 0:5b88d5760320 42 !defined(__APPLE__) && !defined(_WIN32) && !defined(__QNXNTO__) && \
kenjiArai 0:5b88d5760320 43 !defined(__HAIKU__)
kenjiArai 0:5b88d5760320 44 #error "This module only works on Unix and Windows, see MBEDTLS_TIMING_C in config.h"
kenjiArai 0:5b88d5760320 45 #endif
kenjiArai 0:5b88d5760320 46
kenjiArai 0:5b88d5760320 47 #ifndef asm
kenjiArai 0:5b88d5760320 48 #define asm __asm
kenjiArai 0:5b88d5760320 49 #endif
kenjiArai 0:5b88d5760320 50
kenjiArai 0:5b88d5760320 51 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
kenjiArai 0:5b88d5760320 52
kenjiArai 0:5b88d5760320 53 #include <windows.h>
kenjiArai 0:5b88d5760320 54 #include <winbase.h>
kenjiArai 0:5b88d5760320 55 #include <process.h>
kenjiArai 0:5b88d5760320 56
kenjiArai 0:5b88d5760320 57 struct _hr_time
kenjiArai 0:5b88d5760320 58 {
kenjiArai 0:5b88d5760320 59 LARGE_INTEGER start;
kenjiArai 0:5b88d5760320 60 };
kenjiArai 0:5b88d5760320 61
kenjiArai 0:5b88d5760320 62 #else
kenjiArai 0:5b88d5760320 63
kenjiArai 0:5b88d5760320 64 #include <unistd.h>
kenjiArai 0:5b88d5760320 65 #include <sys/types.h>
kenjiArai 0:5b88d5760320 66 #include <sys/time.h>
kenjiArai 0:5b88d5760320 67 #include <signal.h>
kenjiArai 0:5b88d5760320 68 #include <time.h>
kenjiArai 0:5b88d5760320 69
kenjiArai 0:5b88d5760320 70 struct _hr_time
kenjiArai 0:5b88d5760320 71 {
kenjiArai 0:5b88d5760320 72 struct timeval start;
kenjiArai 0:5b88d5760320 73 };
kenjiArai 0:5b88d5760320 74
kenjiArai 0:5b88d5760320 75 #endif /* _WIN32 && !EFIX64 && !EFI32 */
kenjiArai 0:5b88d5760320 76
kenjiArai 0:5b88d5760320 77 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 78 ( defined(_MSC_VER) && defined(_M_IX86) ) || defined(__WATCOMC__)
kenjiArai 0:5b88d5760320 79
kenjiArai 0:5b88d5760320 80 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 81
kenjiArai 0:5b88d5760320 82 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 83 {
kenjiArai 0:5b88d5760320 84 unsigned long tsc;
kenjiArai 0:5b88d5760320 85 __asm rdtsc
kenjiArai 0:5b88d5760320 86 __asm mov [tsc], eax
kenjiArai 0:5b88d5760320 87 return( tsc );
kenjiArai 0:5b88d5760320 88 }
kenjiArai 0:5b88d5760320 89 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 90 ( _MSC_VER && _M_IX86 ) || __WATCOMC__ */
kenjiArai 0:5b88d5760320 91
kenjiArai 0:5b88d5760320 92 /* some versions of mingw-64 have 32-bit longs even on x84_64 */
kenjiArai 0:5b88d5760320 93 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 94 defined(__GNUC__) && ( defined(__i386__) || ( \
kenjiArai 0:5b88d5760320 95 ( defined(__amd64__) || defined( __x86_64__) ) && __SIZEOF_LONG__ == 4 ) )
kenjiArai 0:5b88d5760320 96
kenjiArai 0:5b88d5760320 97 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 98
kenjiArai 0:5b88d5760320 99 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 100 {
kenjiArai 0:5b88d5760320 101 unsigned long lo, hi;
kenjiArai 0:5b88d5760320 102 asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
kenjiArai 0:5b88d5760320 103 return( lo );
kenjiArai 0:5b88d5760320 104 }
kenjiArai 0:5b88d5760320 105 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 106 __GNUC__ && __i386__ */
kenjiArai 0:5b88d5760320 107
kenjiArai 0:5b88d5760320 108 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 109 defined(__GNUC__) && ( defined(__amd64__) || defined(__x86_64__) )
kenjiArai 0:5b88d5760320 110
kenjiArai 0:5b88d5760320 111 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 112
kenjiArai 0:5b88d5760320 113 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 114 {
kenjiArai 0:5b88d5760320 115 unsigned long lo, hi;
kenjiArai 0:5b88d5760320 116 asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
kenjiArai 0:5b88d5760320 117 return( lo | ( hi << 32 ) );
kenjiArai 0:5b88d5760320 118 }
kenjiArai 0:5b88d5760320 119 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 120 __GNUC__ && ( __amd64__ || __x86_64__ ) */
kenjiArai 0:5b88d5760320 121
kenjiArai 0:5b88d5760320 122 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 123 defined(__GNUC__) && ( defined(__powerpc__) || defined(__ppc__) )
kenjiArai 0:5b88d5760320 124
kenjiArai 0:5b88d5760320 125 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 126
kenjiArai 0:5b88d5760320 127 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 128 {
kenjiArai 0:5b88d5760320 129 unsigned long tbl, tbu0, tbu1;
kenjiArai 0:5b88d5760320 130
kenjiArai 0:5b88d5760320 131 do
kenjiArai 0:5b88d5760320 132 {
kenjiArai 0:5b88d5760320 133 asm volatile( "mftbu %0" : "=r" (tbu0) );
kenjiArai 0:5b88d5760320 134 asm volatile( "mftb %0" : "=r" (tbl ) );
kenjiArai 0:5b88d5760320 135 asm volatile( "mftbu %0" : "=r" (tbu1) );
kenjiArai 0:5b88d5760320 136 }
kenjiArai 0:5b88d5760320 137 while( tbu0 != tbu1 );
kenjiArai 0:5b88d5760320 138
kenjiArai 0:5b88d5760320 139 return( tbl );
kenjiArai 0:5b88d5760320 140 }
kenjiArai 0:5b88d5760320 141 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 142 __GNUC__ && ( __powerpc__ || __ppc__ ) */
kenjiArai 0:5b88d5760320 143
kenjiArai 0:5b88d5760320 144 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 145 defined(__GNUC__) && defined(__sparc64__)
kenjiArai 0:5b88d5760320 146
kenjiArai 0:5b88d5760320 147 #if defined(__OpenBSD__)
kenjiArai 0:5b88d5760320 148 #warning OpenBSD does not allow access to tick register using software version instead
kenjiArai 0:5b88d5760320 149 #else
kenjiArai 0:5b88d5760320 150 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 151
kenjiArai 0:5b88d5760320 152 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 153 {
kenjiArai 0:5b88d5760320 154 unsigned long tick;
kenjiArai 0:5b88d5760320 155 asm volatile( "rdpr %%tick, %0;" : "=&r" (tick) );
kenjiArai 0:5b88d5760320 156 return( tick );
kenjiArai 0:5b88d5760320 157 }
kenjiArai 0:5b88d5760320 158 #endif /* __OpenBSD__ */
kenjiArai 0:5b88d5760320 159 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 160 __GNUC__ && __sparc64__ */
kenjiArai 0:5b88d5760320 161
kenjiArai 0:5b88d5760320 162 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 163 defined(__GNUC__) && defined(__sparc__) && !defined(__sparc64__)
kenjiArai 0:5b88d5760320 164
kenjiArai 0:5b88d5760320 165 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 166
kenjiArai 0:5b88d5760320 167 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 168 {
kenjiArai 0:5b88d5760320 169 unsigned long tick;
kenjiArai 0:5b88d5760320 170 asm volatile( ".byte 0x83, 0x41, 0x00, 0x00" );
kenjiArai 0:5b88d5760320 171 asm volatile( "mov %%g1, %0" : "=r" (tick) );
kenjiArai 0:5b88d5760320 172 return( tick );
kenjiArai 0:5b88d5760320 173 }
kenjiArai 0:5b88d5760320 174 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 175 __GNUC__ && __sparc__ && !__sparc64__ */
kenjiArai 0:5b88d5760320 176
kenjiArai 0:5b88d5760320 177 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 178 defined(__GNUC__) && defined(__alpha__)
kenjiArai 0:5b88d5760320 179
kenjiArai 0:5b88d5760320 180 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 181
kenjiArai 0:5b88d5760320 182 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 183 {
kenjiArai 0:5b88d5760320 184 unsigned long cc;
kenjiArai 0:5b88d5760320 185 asm volatile( "rpcc %0" : "=r" (cc) );
kenjiArai 0:5b88d5760320 186 return( cc & 0xFFFFFFFF );
kenjiArai 0:5b88d5760320 187 }
kenjiArai 0:5b88d5760320 188 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 189 __GNUC__ && __alpha__ */
kenjiArai 0:5b88d5760320 190
kenjiArai 0:5b88d5760320 191 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) && \
kenjiArai 0:5b88d5760320 192 defined(__GNUC__) && defined(__ia64__)
kenjiArai 0:5b88d5760320 193
kenjiArai 0:5b88d5760320 194 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 195
kenjiArai 0:5b88d5760320 196 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 197 {
kenjiArai 0:5b88d5760320 198 unsigned long itc;
kenjiArai 0:5b88d5760320 199 asm volatile( "mov %0 = ar.itc" : "=r" (itc) );
kenjiArai 0:5b88d5760320 200 return( itc );
kenjiArai 0:5b88d5760320 201 }
kenjiArai 0:5b88d5760320 202 #endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
kenjiArai 0:5b88d5760320 203 __GNUC__ && __ia64__ */
kenjiArai 0:5b88d5760320 204
kenjiArai 0:5b88d5760320 205 #if !defined(HAVE_HARDCLOCK) && defined(_MSC_VER) && \
kenjiArai 0:5b88d5760320 206 !defined(EFIX64) && !defined(EFI32)
kenjiArai 0:5b88d5760320 207
kenjiArai 0:5b88d5760320 208 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 209
kenjiArai 0:5b88d5760320 210 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 211 {
kenjiArai 0:5b88d5760320 212 LARGE_INTEGER offset;
kenjiArai 0:5b88d5760320 213
kenjiArai 0:5b88d5760320 214 QueryPerformanceCounter( &offset );
kenjiArai 0:5b88d5760320 215
kenjiArai 0:5b88d5760320 216 return( (unsigned long)( offset.QuadPart ) );
kenjiArai 0:5b88d5760320 217 }
kenjiArai 0:5b88d5760320 218 #endif /* !HAVE_HARDCLOCK && _MSC_VER && !EFIX64 && !EFI32 */
kenjiArai 0:5b88d5760320 219
kenjiArai 0:5b88d5760320 220 #if !defined(HAVE_HARDCLOCK)
kenjiArai 0:5b88d5760320 221
kenjiArai 0:5b88d5760320 222 #define HAVE_HARDCLOCK
kenjiArai 0:5b88d5760320 223
kenjiArai 0:5b88d5760320 224 static int hardclock_init = 0;
kenjiArai 0:5b88d5760320 225 static struct timeval tv_init;
kenjiArai 0:5b88d5760320 226
kenjiArai 0:5b88d5760320 227 unsigned long mbedtls_timing_hardclock( void )
kenjiArai 0:5b88d5760320 228 {
kenjiArai 0:5b88d5760320 229 struct timeval tv_cur;
kenjiArai 0:5b88d5760320 230
kenjiArai 0:5b88d5760320 231 if( hardclock_init == 0 )
kenjiArai 0:5b88d5760320 232 {
kenjiArai 0:5b88d5760320 233 gettimeofday( &tv_init, NULL );
kenjiArai 0:5b88d5760320 234 hardclock_init = 1;
kenjiArai 0:5b88d5760320 235 }
kenjiArai 0:5b88d5760320 236
kenjiArai 0:5b88d5760320 237 gettimeofday( &tv_cur, NULL );
kenjiArai 0:5b88d5760320 238 return( ( tv_cur.tv_sec - tv_init.tv_sec ) * 1000000
kenjiArai 0:5b88d5760320 239 + ( tv_cur.tv_usec - tv_init.tv_usec ) );
kenjiArai 0:5b88d5760320 240 }
kenjiArai 0:5b88d5760320 241 #endif /* !HAVE_HARDCLOCK */
kenjiArai 0:5b88d5760320 242
kenjiArai 0:5b88d5760320 243 volatile int mbedtls_timing_alarmed = 0;
kenjiArai 0:5b88d5760320 244
kenjiArai 0:5b88d5760320 245 #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
kenjiArai 0:5b88d5760320 246
kenjiArai 0:5b88d5760320 247 unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int reset )
kenjiArai 0:5b88d5760320 248 {
kenjiArai 0:5b88d5760320 249 struct _hr_time *t = (struct _hr_time *) val;
kenjiArai 0:5b88d5760320 250
kenjiArai 0:5b88d5760320 251 if( reset )
kenjiArai 0:5b88d5760320 252 {
kenjiArai 0:5b88d5760320 253 QueryPerformanceCounter( &t->start );
kenjiArai 0:5b88d5760320 254 return( 0 );
kenjiArai 0:5b88d5760320 255 }
kenjiArai 0:5b88d5760320 256 else
kenjiArai 0:5b88d5760320 257 {
kenjiArai 0:5b88d5760320 258 unsigned long delta;
kenjiArai 0:5b88d5760320 259 LARGE_INTEGER now, hfreq;
kenjiArai 0:5b88d5760320 260 QueryPerformanceCounter( &now );
kenjiArai 0:5b88d5760320 261 QueryPerformanceFrequency( &hfreq );
kenjiArai 0:5b88d5760320 262 delta = (unsigned long)( ( now.QuadPart - t->start.QuadPart ) * 1000ul
kenjiArai 0:5b88d5760320 263 / hfreq.QuadPart );
kenjiArai 0:5b88d5760320 264 return( delta );
kenjiArai 0:5b88d5760320 265 }
kenjiArai 0:5b88d5760320 266 }
kenjiArai 0:5b88d5760320 267
kenjiArai 0:5b88d5760320 268 /* It's OK to use a global because alarm() is supposed to be global anyway */
kenjiArai 0:5b88d5760320 269 static DWORD alarmMs;
kenjiArai 0:5b88d5760320 270
kenjiArai 0:5b88d5760320 271 static void TimerProc( void *TimerContext )
kenjiArai 0:5b88d5760320 272 {
kenjiArai 0:5b88d5760320 273 (void) TimerContext;
kenjiArai 0:5b88d5760320 274 Sleep( alarmMs );
kenjiArai 0:5b88d5760320 275 mbedtls_timing_alarmed = 1;
kenjiArai 0:5b88d5760320 276 /* _endthread will be called implicitly on return
kenjiArai 0:5b88d5760320 277 * That ensures execution of thread funcition's epilogue */
kenjiArai 0:5b88d5760320 278 }
kenjiArai 0:5b88d5760320 279
kenjiArai 0:5b88d5760320 280 void mbedtls_set_alarm( int seconds )
kenjiArai 0:5b88d5760320 281 {
kenjiArai 0:5b88d5760320 282 if( seconds == 0 )
kenjiArai 0:5b88d5760320 283 {
kenjiArai 0:5b88d5760320 284 /* No need to create a thread for this simple case.
kenjiArai 0:5b88d5760320 285 * Also, this shorcut is more reliable at least on MinGW32 */
kenjiArai 0:5b88d5760320 286 mbedtls_timing_alarmed = 1;
kenjiArai 0:5b88d5760320 287 return;
kenjiArai 0:5b88d5760320 288 }
kenjiArai 0:5b88d5760320 289
kenjiArai 0:5b88d5760320 290 mbedtls_timing_alarmed = 0;
kenjiArai 0:5b88d5760320 291 alarmMs = seconds * 1000;
kenjiArai 0:5b88d5760320 292 (void) _beginthread( TimerProc, 0, NULL );
kenjiArai 0:5b88d5760320 293 }
kenjiArai 0:5b88d5760320 294
kenjiArai 0:5b88d5760320 295 #else /* _WIN32 && !EFIX64 && !EFI32 */
kenjiArai 0:5b88d5760320 296
kenjiArai 0:5b88d5760320 297 unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int reset )
kenjiArai 0:5b88d5760320 298 {
kenjiArai 0:5b88d5760320 299 struct _hr_time *t = (struct _hr_time *) val;
kenjiArai 0:5b88d5760320 300
kenjiArai 0:5b88d5760320 301 if( reset )
kenjiArai 0:5b88d5760320 302 {
kenjiArai 0:5b88d5760320 303 gettimeofday( &t->start, NULL );
kenjiArai 0:5b88d5760320 304 return( 0 );
kenjiArai 0:5b88d5760320 305 }
kenjiArai 0:5b88d5760320 306 else
kenjiArai 0:5b88d5760320 307 {
kenjiArai 0:5b88d5760320 308 unsigned long delta;
kenjiArai 0:5b88d5760320 309 struct timeval now;
kenjiArai 0:5b88d5760320 310 gettimeofday( &now, NULL );
kenjiArai 0:5b88d5760320 311 delta = ( now.tv_sec - t->start.tv_sec ) * 1000ul
kenjiArai 0:5b88d5760320 312 + ( now.tv_usec - t->start.tv_usec ) / 1000;
kenjiArai 0:5b88d5760320 313 return( delta );
kenjiArai 0:5b88d5760320 314 }
kenjiArai 0:5b88d5760320 315 }
kenjiArai 0:5b88d5760320 316
kenjiArai 0:5b88d5760320 317 static void sighandler( int signum )
kenjiArai 0:5b88d5760320 318 {
kenjiArai 0:5b88d5760320 319 mbedtls_timing_alarmed = 1;
kenjiArai 0:5b88d5760320 320 signal( signum, sighandler );
kenjiArai 0:5b88d5760320 321 }
kenjiArai 0:5b88d5760320 322
kenjiArai 0:5b88d5760320 323 void mbedtls_set_alarm( int seconds )
kenjiArai 0:5b88d5760320 324 {
kenjiArai 0:5b88d5760320 325 mbedtls_timing_alarmed = 0;
kenjiArai 0:5b88d5760320 326 signal( SIGALRM, sighandler );
kenjiArai 0:5b88d5760320 327 alarm( seconds );
kenjiArai 0:5b88d5760320 328 if( seconds == 0 )
kenjiArai 0:5b88d5760320 329 {
kenjiArai 0:5b88d5760320 330 /* alarm(0) cancelled any previous pending alarm, but the
kenjiArai 0:5b88d5760320 331 handler won't fire, so raise the flag straight away. */
kenjiArai 0:5b88d5760320 332 mbedtls_timing_alarmed = 1;
kenjiArai 0:5b88d5760320 333 }
kenjiArai 0:5b88d5760320 334 }
kenjiArai 0:5b88d5760320 335
kenjiArai 0:5b88d5760320 336 #endif /* _WIN32 && !EFIX64 && !EFI32 */
kenjiArai 0:5b88d5760320 337
kenjiArai 0:5b88d5760320 338 /*
kenjiArai 0:5b88d5760320 339 * Set delays to watch
kenjiArai 0:5b88d5760320 340 */
kenjiArai 0:5b88d5760320 341 void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms )
kenjiArai 0:5b88d5760320 342 {
kenjiArai 0:5b88d5760320 343 mbedtls_timing_delay_context *ctx = (mbedtls_timing_delay_context *) data;
kenjiArai 0:5b88d5760320 344
kenjiArai 0:5b88d5760320 345 ctx->int_ms = int_ms;
kenjiArai 0:5b88d5760320 346 ctx->fin_ms = fin_ms;
kenjiArai 0:5b88d5760320 347
kenjiArai 0:5b88d5760320 348 if( fin_ms != 0 )
kenjiArai 0:5b88d5760320 349 (void) mbedtls_timing_get_timer( &ctx->timer, 1 );
kenjiArai 0:5b88d5760320 350 }
kenjiArai 0:5b88d5760320 351
kenjiArai 0:5b88d5760320 352 /*
kenjiArai 0:5b88d5760320 353 * Get number of delays expired
kenjiArai 0:5b88d5760320 354 */
kenjiArai 0:5b88d5760320 355 int mbedtls_timing_get_delay( void *data )
kenjiArai 0:5b88d5760320 356 {
kenjiArai 0:5b88d5760320 357 mbedtls_timing_delay_context *ctx = (mbedtls_timing_delay_context *) data;
kenjiArai 0:5b88d5760320 358 unsigned long elapsed_ms;
kenjiArai 0:5b88d5760320 359
kenjiArai 0:5b88d5760320 360 if( ctx->fin_ms == 0 )
kenjiArai 0:5b88d5760320 361 return( -1 );
kenjiArai 0:5b88d5760320 362
kenjiArai 0:5b88d5760320 363 elapsed_ms = mbedtls_timing_get_timer( &ctx->timer, 0 );
kenjiArai 0:5b88d5760320 364
kenjiArai 0:5b88d5760320 365 if( elapsed_ms >= ctx->fin_ms )
kenjiArai 0:5b88d5760320 366 return( 2 );
kenjiArai 0:5b88d5760320 367
kenjiArai 0:5b88d5760320 368 if( elapsed_ms >= ctx->int_ms )
kenjiArai 0:5b88d5760320 369 return( 1 );
kenjiArai 0:5b88d5760320 370
kenjiArai 0:5b88d5760320 371 return( 0 );
kenjiArai 0:5b88d5760320 372 }
kenjiArai 0:5b88d5760320 373
kenjiArai 0:5b88d5760320 374 #endif /* !MBEDTLS_TIMING_ALT */
kenjiArai 0:5b88d5760320 375
kenjiArai 0:5b88d5760320 376 #if defined(MBEDTLS_SELF_TEST)
kenjiArai 0:5b88d5760320 377
kenjiArai 0:5b88d5760320 378 /*
kenjiArai 0:5b88d5760320 379 * Busy-waits for the given number of milliseconds.
kenjiArai 0:5b88d5760320 380 * Used for testing mbedtls_timing_hardclock.
kenjiArai 0:5b88d5760320 381 */
kenjiArai 0:5b88d5760320 382 static void busy_msleep( unsigned long msec )
kenjiArai 0:5b88d5760320 383 {
kenjiArai 0:5b88d5760320 384 struct mbedtls_timing_hr_time hires;
kenjiArai 0:5b88d5760320 385 unsigned long i = 0; /* for busy-waiting */
kenjiArai 0:5b88d5760320 386 volatile unsigned long j; /* to prevent optimisation */
kenjiArai 0:5b88d5760320 387
kenjiArai 0:5b88d5760320 388 (void) mbedtls_timing_get_timer( &hires, 1 );
kenjiArai 0:5b88d5760320 389
kenjiArai 0:5b88d5760320 390 while( mbedtls_timing_get_timer( &hires, 0 ) < msec )
kenjiArai 0:5b88d5760320 391 i++;
kenjiArai 0:5b88d5760320 392
kenjiArai 0:5b88d5760320 393 j = i;
kenjiArai 0:5b88d5760320 394 (void) j;
kenjiArai 0:5b88d5760320 395 }
kenjiArai 0:5b88d5760320 396
kenjiArai 0:5b88d5760320 397 #define FAIL do \
kenjiArai 0:5b88d5760320 398 { \
kenjiArai 0:5b88d5760320 399 if( verbose != 0 ) \
kenjiArai 0:5b88d5760320 400 { \
kenjiArai 0:5b88d5760320 401 mbedtls_printf( "failed at line %d\n", __LINE__ ); \
kenjiArai 0:5b88d5760320 402 mbedtls_printf( " cycles=%lu ratio=%lu millisecs=%lu secs=%lu hardfail=%d a=%lu b=%lu\n", \
kenjiArai 0:5b88d5760320 403 cycles, ratio, millisecs, secs, hardfail, \
kenjiArai 0:5b88d5760320 404 (unsigned long) a, (unsigned long) b ); \
kenjiArai 0:5b88d5760320 405 mbedtls_printf( " elapsed(hires)=%lu elapsed(ctx)=%lu status(ctx)=%d\n", \
kenjiArai 0:5b88d5760320 406 mbedtls_timing_get_timer( &hires, 0 ), \
kenjiArai 0:5b88d5760320 407 mbedtls_timing_get_timer( &ctx.timer, 0 ), \
kenjiArai 0:5b88d5760320 408 mbedtls_timing_get_delay( &ctx ) ); \
kenjiArai 0:5b88d5760320 409 } \
kenjiArai 0:5b88d5760320 410 return( 1 ); \
kenjiArai 0:5b88d5760320 411 } while( 0 )
kenjiArai 0:5b88d5760320 412
kenjiArai 0:5b88d5760320 413 /*
kenjiArai 0:5b88d5760320 414 * Checkup routine
kenjiArai 0:5b88d5760320 415 *
kenjiArai 0:5b88d5760320 416 * Warning: this is work in progress, some tests may not be reliable enough
kenjiArai 0:5b88d5760320 417 * yet! False positives may happen.
kenjiArai 0:5b88d5760320 418 */
kenjiArai 0:5b88d5760320 419 int mbedtls_timing_self_test( int verbose )
kenjiArai 0:5b88d5760320 420 {
kenjiArai 0:5b88d5760320 421 unsigned long cycles = 0, ratio = 0;
kenjiArai 0:5b88d5760320 422 unsigned long millisecs = 0, secs = 0;
kenjiArai 0:5b88d5760320 423 int hardfail = 0;
kenjiArai 0:5b88d5760320 424 struct mbedtls_timing_hr_time hires;
kenjiArai 0:5b88d5760320 425 uint32_t a = 0, b = 0;
kenjiArai 0:5b88d5760320 426 mbedtls_timing_delay_context ctx;
kenjiArai 0:5b88d5760320 427
kenjiArai 0:5b88d5760320 428 if( verbose != 0 )
kenjiArai 0:5b88d5760320 429 mbedtls_printf( " TIMING tests note: will take some time!\n" );
kenjiArai 0:5b88d5760320 430
kenjiArai 0:5b88d5760320 431 if( verbose != 0 )
kenjiArai 0:5b88d5760320 432 mbedtls_printf( " TIMING test #1 (set_alarm / get_timer): " );
kenjiArai 0:5b88d5760320 433
kenjiArai 0:5b88d5760320 434 {
kenjiArai 0:5b88d5760320 435 secs = 1;
kenjiArai 0:5b88d5760320 436
kenjiArai 0:5b88d5760320 437 (void) mbedtls_timing_get_timer( &hires, 1 );
kenjiArai 0:5b88d5760320 438
kenjiArai 0:5b88d5760320 439 mbedtls_set_alarm( (int) secs );
kenjiArai 0:5b88d5760320 440 while( !mbedtls_timing_alarmed )
kenjiArai 0:5b88d5760320 441 ;
kenjiArai 0:5b88d5760320 442
kenjiArai 0:5b88d5760320 443 millisecs = mbedtls_timing_get_timer( &hires, 0 );
kenjiArai 0:5b88d5760320 444
kenjiArai 0:5b88d5760320 445 /* For some reason on Windows it looks like alarm has an extra delay
kenjiArai 0:5b88d5760320 446 * (maybe related to creating a new thread). Allow some room here. */
kenjiArai 0:5b88d5760320 447 if( millisecs < 800 * secs || millisecs > 1200 * secs + 300 )
kenjiArai 0:5b88d5760320 448 FAIL;
kenjiArai 0:5b88d5760320 449 }
kenjiArai 0:5b88d5760320 450
kenjiArai 0:5b88d5760320 451 if( verbose != 0 )
kenjiArai 0:5b88d5760320 452 mbedtls_printf( "passed\n" );
kenjiArai 0:5b88d5760320 453
kenjiArai 0:5b88d5760320 454 if( verbose != 0 )
kenjiArai 0:5b88d5760320 455 mbedtls_printf( " TIMING test #2 (set/get_delay ): " );
kenjiArai 0:5b88d5760320 456
kenjiArai 0:5b88d5760320 457 {
kenjiArai 0:5b88d5760320 458 a = 800;
kenjiArai 0:5b88d5760320 459 b = 400;
kenjiArai 0:5b88d5760320 460 mbedtls_timing_set_delay( &ctx, a, a + b ); /* T = 0 */
kenjiArai 0:5b88d5760320 461
kenjiArai 0:5b88d5760320 462 busy_msleep( a - a / 4 ); /* T = a - a/4 */
kenjiArai 0:5b88d5760320 463 if( mbedtls_timing_get_delay( &ctx ) != 0 )
kenjiArai 0:5b88d5760320 464 FAIL;
kenjiArai 0:5b88d5760320 465
kenjiArai 0:5b88d5760320 466 busy_msleep( a / 4 + b / 4 ); /* T = a + b/4 */
kenjiArai 0:5b88d5760320 467 if( mbedtls_timing_get_delay( &ctx ) != 1 )
kenjiArai 0:5b88d5760320 468 FAIL;
kenjiArai 0:5b88d5760320 469
kenjiArai 0:5b88d5760320 470 busy_msleep( b ); /* T = a + b + b/4 */
kenjiArai 0:5b88d5760320 471 if( mbedtls_timing_get_delay( &ctx ) != 2 )
kenjiArai 0:5b88d5760320 472 FAIL;
kenjiArai 0:5b88d5760320 473 }
kenjiArai 0:5b88d5760320 474
kenjiArai 0:5b88d5760320 475 mbedtls_timing_set_delay( &ctx, 0, 0 );
kenjiArai 0:5b88d5760320 476 busy_msleep( 200 );
kenjiArai 0:5b88d5760320 477 if( mbedtls_timing_get_delay( &ctx ) != -1 )
kenjiArai 0:5b88d5760320 478 FAIL;
kenjiArai 0:5b88d5760320 479
kenjiArai 0:5b88d5760320 480 if( verbose != 0 )
kenjiArai 0:5b88d5760320 481 mbedtls_printf( "passed\n" );
kenjiArai 0:5b88d5760320 482
kenjiArai 0:5b88d5760320 483 if( verbose != 0 )
kenjiArai 0:5b88d5760320 484 mbedtls_printf( " TIMING test #3 (hardclock / get_timer): " );
kenjiArai 0:5b88d5760320 485
kenjiArai 0:5b88d5760320 486 /*
kenjiArai 0:5b88d5760320 487 * Allow one failure for possible counter wrapping.
kenjiArai 0:5b88d5760320 488 * On a 4Ghz 32-bit machine the cycle counter wraps about once per second;
kenjiArai 0:5b88d5760320 489 * since the whole test is about 10ms, it shouldn't happen twice in a row.
kenjiArai 0:5b88d5760320 490 */
kenjiArai 0:5b88d5760320 491
kenjiArai 0:5b88d5760320 492 hard_test:
kenjiArai 0:5b88d5760320 493 if( hardfail > 1 )
kenjiArai 0:5b88d5760320 494 {
kenjiArai 0:5b88d5760320 495 if( verbose != 0 )
kenjiArai 0:5b88d5760320 496 mbedtls_printf( "failed (ignored)\n" );
kenjiArai 0:5b88d5760320 497
kenjiArai 0:5b88d5760320 498 goto hard_test_done;
kenjiArai 0:5b88d5760320 499 }
kenjiArai 0:5b88d5760320 500
kenjiArai 0:5b88d5760320 501 /* Get a reference ratio cycles/ms */
kenjiArai 0:5b88d5760320 502 millisecs = 1;
kenjiArai 0:5b88d5760320 503 cycles = mbedtls_timing_hardclock();
kenjiArai 0:5b88d5760320 504 busy_msleep( millisecs );
kenjiArai 0:5b88d5760320 505 cycles = mbedtls_timing_hardclock() - cycles;
kenjiArai 0:5b88d5760320 506 ratio = cycles / millisecs;
kenjiArai 0:5b88d5760320 507
kenjiArai 0:5b88d5760320 508 /* Check that the ratio is mostly constant */
kenjiArai 0:5b88d5760320 509 for( millisecs = 2; millisecs <= 4; millisecs++ )
kenjiArai 0:5b88d5760320 510 {
kenjiArai 0:5b88d5760320 511 cycles = mbedtls_timing_hardclock();
kenjiArai 0:5b88d5760320 512 busy_msleep( millisecs );
kenjiArai 0:5b88d5760320 513 cycles = mbedtls_timing_hardclock() - cycles;
kenjiArai 0:5b88d5760320 514
kenjiArai 0:5b88d5760320 515 /* Allow variation up to 20% */
kenjiArai 0:5b88d5760320 516 if( cycles / millisecs < ratio - ratio / 5 ||
kenjiArai 0:5b88d5760320 517 cycles / millisecs > ratio + ratio / 5 )
kenjiArai 0:5b88d5760320 518 {
kenjiArai 0:5b88d5760320 519 hardfail++;
kenjiArai 0:5b88d5760320 520 goto hard_test;
kenjiArai 0:5b88d5760320 521 }
kenjiArai 0:5b88d5760320 522 }
kenjiArai 0:5b88d5760320 523
kenjiArai 0:5b88d5760320 524 if( verbose != 0 )
kenjiArai 0:5b88d5760320 525 mbedtls_printf( "passed\n" );
kenjiArai 0:5b88d5760320 526
kenjiArai 0:5b88d5760320 527 hard_test_done:
kenjiArai 0:5b88d5760320 528
kenjiArai 0:5b88d5760320 529 if( verbose != 0 )
kenjiArai 0:5b88d5760320 530 mbedtls_printf( "\n" );
kenjiArai 0:5b88d5760320 531
kenjiArai 0:5b88d5760320 532 return( 0 );
kenjiArai 0:5b88d5760320 533 }
kenjiArai 0:5b88d5760320 534
kenjiArai 0:5b88d5760320 535 #endif /* MBEDTLS_SELF_TEST */
kenjiArai 0:5b88d5760320 536
kenjiArai 0:5b88d5760320 537 #endif /* MBEDTLS_TIMING_C */