250 lines
6.3 KiB
C
250 lines
6.3 KiB
C
|
/*
|
||
|
|
* Copyright 2011-2021 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
||
|
|
* this file except in compliance with the License. You can obtain a copy
|
||
|
|
* in the file LICENSE in the source distribution or at
|
||
|
|
* https://www.openssl.org/source/license.html
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <setjmp.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include <openssl/crypto.h>
|
||
|
|
#include "internal/cryptlib.h"
|
||
|
|
|
||
|
|
#include "arm_arch.h"
|
||
|
|
|
||
|
|
unsigned int OPENSSL_armcap_P = 0;
|
||
|
|
|
||
|
|
#if __ARM_MAX_ARCH__<7
|
||
|
|
void OPENSSL_cpuid_setup(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
uint32_t OPENSSL_rdtsc(void)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static sigset_t all_masked;
|
||
|
|
|
||
|
|
static sigjmp_buf ill_jmp;
|
||
|
|
static void ill_handler(int sig)
|
||
|
|
{
|
||
|
|
siglongjmp(ill_jmp, sig);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Following subroutines could have been inlined, but it's not all
|
||
|
|
* ARM compilers support inline assembler...
|
||
|
|
*/
|
||
|
|
void _armv7_neon_probe(void);
|
||
|
|
void _armv8_aes_probe(void);
|
||
|
|
void _armv8_sha1_probe(void);
|
||
|
|
void _armv8_sha256_probe(void);
|
||
|
|
void _armv8_pmull_probe(void);
|
||
|
|
# ifdef __aarch64__
|
||
|
|
void _armv8_sha512_probe(void);
|
||
|
|
# endif
|
||
|
|
uint32_t _armv7_tick(void);
|
||
|
|
|
||
|
|
uint32_t OPENSSL_rdtsc(void)
|
||
|
|
{
|
||
|
|
if (OPENSSL_armcap_P & ARMV7_TICK)
|
||
|
|
return _armv7_tick();
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
# if defined(__GNUC__) && __GNUC__>=2
|
||
|
|
void OPENSSL_cpuid_setup(void) __attribute__ ((constructor));
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
|
||
|
|
# if __GLIBC_PREREQ(2, 16)
|
||
|
|
# include <sys/auxv.h>
|
||
|
|
# define OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
# endif
|
||
|
|
# elif defined(__ANDROID_API__)
|
||
|
|
/* see https://developer.android.google.cn/ndk/guides/cpu-features */
|
||
|
|
# if __ANDROID_API__ >= 18
|
||
|
|
# include <sys/auxv.h>
|
||
|
|
# define OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
# endif
|
||
|
|
# endif
|
||
|
|
# if defined(__FreeBSD__)
|
||
|
|
# include <sys/param.h>
|
||
|
|
# if __FreeBSD_version >= 1200000
|
||
|
|
# include <sys/auxv.h>
|
||
|
|
# define OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
|
||
|
|
static unsigned long getauxval(unsigned long key)
|
||
|
|
{
|
||
|
|
unsigned long val = 0ul;
|
||
|
|
|
||
|
|
if (elf_aux_info((int)key, &val, sizeof(val)) != 0)
|
||
|
|
return 0ul;
|
||
|
|
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Android: according to https://developer.android.com/ndk/guides/cpu-features,
|
||
|
|
* getauxval is supported starting with API level 18
|
||
|
|
*/
|
||
|
|
# if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ >= 18
|
||
|
|
# include <sys/auxv.h>
|
||
|
|
# define OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ARM puts the feature bits for Crypto Extensions in AT_HWCAP2, whereas
|
||
|
|
* AArch64 used AT_HWCAP.
|
||
|
|
*/
|
||
|
|
# ifndef AT_HWCAP
|
||
|
|
# define AT_HWCAP 16
|
||
|
|
# endif
|
||
|
|
# ifndef AT_HWCAP2
|
||
|
|
# define AT_HWCAP2 26
|
||
|
|
# endif
|
||
|
|
# if defined(__arm__) || defined (__arm)
|
||
|
|
# define HWCAP AT_HWCAP
|
||
|
|
# define HWCAP_NEON (1 << 12)
|
||
|
|
|
||
|
|
# define HWCAP_CE AT_HWCAP2
|
||
|
|
# define HWCAP_CE_AES (1 << 0)
|
||
|
|
# define HWCAP_CE_PMULL (1 << 1)
|
||
|
|
# define HWCAP_CE_SHA1 (1 << 2)
|
||
|
|
# define HWCAP_CE_SHA256 (1 << 3)
|
||
|
|
# elif defined(__aarch64__)
|
||
|
|
# define HWCAP AT_HWCAP
|
||
|
|
# define HWCAP_NEON (1 << 1)
|
||
|
|
|
||
|
|
# define HWCAP_CE HWCAP
|
||
|
|
# define HWCAP_CE_AES (1 << 3)
|
||
|
|
# define HWCAP_CE_PMULL (1 << 4)
|
||
|
|
# define HWCAP_CE_SHA1 (1 << 5)
|
||
|
|
# define HWCAP_CE_SHA256 (1 << 6)
|
||
|
|
# define HWCAP_CE_SHA512 (1 << 21)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
void OPENSSL_cpuid_setup(void)
|
||
|
|
{
|
||
|
|
const char *e;
|
||
|
|
struct sigaction ill_oact, ill_act;
|
||
|
|
sigset_t oset;
|
||
|
|
static int trigger = 0;
|
||
|
|
|
||
|
|
if (trigger)
|
||
|
|
return;
|
||
|
|
trigger = 1;
|
||
|
|
|
||
|
|
if ((e = getenv("OPENSSL_armcap"))) {
|
||
|
|
OPENSSL_armcap_P = (unsigned int)strtoul(e, NULL, 0);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
# if defined(__APPLE__) && !defined(__aarch64__)
|
||
|
|
/*
|
||
|
|
* Capability probing by catching SIGILL appears to be problematic
|
||
|
|
* on iOS. But since Apple universe is "monocultural", it's actually
|
||
|
|
* possible to simply set pre-defined processor capability mask.
|
||
|
|
*/
|
||
|
|
if (1) {
|
||
|
|
OPENSSL_armcap_P = ARMV7_NEON;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* One could do same even for __aarch64__ iOS builds. It's not done
|
||
|
|
* exclusively for reasons of keeping code unified across platforms.
|
||
|
|
* Unified code works because it never triggers SIGILL on Apple
|
||
|
|
* devices...
|
||
|
|
*/
|
||
|
|
# endif
|
||
|
|
|
||
|
|
OPENSSL_armcap_P = 0;
|
||
|
|
|
||
|
|
# ifdef OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
if (getauxval(HWCAP) & HWCAP_NEON) {
|
||
|
|
unsigned long hwcap = getauxval(HWCAP_CE);
|
||
|
|
|
||
|
|
OPENSSL_armcap_P |= ARMV7_NEON;
|
||
|
|
|
||
|
|
if (hwcap & HWCAP_CE_AES)
|
||
|
|
OPENSSL_armcap_P |= ARMV8_AES;
|
||
|
|
|
||
|
|
if (hwcap & HWCAP_CE_PMULL)
|
||
|
|
OPENSSL_armcap_P |= ARMV8_PMULL;
|
||
|
|
|
||
|
|
if (hwcap & HWCAP_CE_SHA1)
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA1;
|
||
|
|
|
||
|
|
if (hwcap & HWCAP_CE_SHA256)
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA256;
|
||
|
|
|
||
|
|
# ifdef __aarch64__
|
||
|
|
if (hwcap & HWCAP_CE_SHA512)
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA512;
|
||
|
|
# endif
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
|
||
|
|
sigfillset(&all_masked);
|
||
|
|
sigdelset(&all_masked, SIGILL);
|
||
|
|
sigdelset(&all_masked, SIGTRAP);
|
||
|
|
sigdelset(&all_masked, SIGFPE);
|
||
|
|
sigdelset(&all_masked, SIGBUS);
|
||
|
|
sigdelset(&all_masked, SIGSEGV);
|
||
|
|
|
||
|
|
memset(&ill_act, 0, sizeof(ill_act));
|
||
|
|
ill_act.sa_handler = ill_handler;
|
||
|
|
ill_act.sa_mask = all_masked;
|
||
|
|
|
||
|
|
sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
|
||
|
|
sigaction(SIGILL, &ill_act, &ill_oact);
|
||
|
|
|
||
|
|
/* If we used getauxval, we already have all the values */
|
||
|
|
# ifndef OSSL_IMPLEMENT_GETAUXVAL
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv7_neon_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV7_NEON;
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv8_pmull_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV8_PMULL | ARMV8_AES;
|
||
|
|
} else if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv8_aes_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV8_AES;
|
||
|
|
}
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv8_sha1_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA1;
|
||
|
|
}
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv8_sha256_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA256;
|
||
|
|
}
|
||
|
|
# if defined(__aarch64__) && !defined(__APPLE__)
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv8_sha512_probe();
|
||
|
|
OPENSSL_armcap_P |= ARMV8_SHA512;
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
|
||
|
|
/* Things that getauxval didn't tell us */
|
||
|
|
if (sigsetjmp(ill_jmp, 1) == 0) {
|
||
|
|
_armv7_tick();
|
||
|
|
OPENSSL_armcap_P |= ARMV7_TICK;
|
||
|
|
}
|
||
|
|
|
||
|
|
sigaction(SIGILL, &ill_oact, NULL);
|
||
|
|
sigprocmask(SIG_SETMASK, &oset, NULL);
|
||
|
|
}
|
||
|
|
#endif
|