mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-30 19:57:45 +00:00
158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include <crypto.h>
|
|
|
|
#include "arm_arch.h"
|
|
|
|
unsigned int OPENSSL_armcap_P;
|
|
|
|
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);
|
|
unsigned long _armv7_tick(void);
|
|
|
|
unsigned long OPENSSL_rdtsc(void)
|
|
{
|
|
if (OPENSSL_armcap_P & ARMV7_TICK)
|
|
return _armv7_tick();
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Use a weak reference to getauxval() so we can use it if it is available but
|
|
* don't break the build if it is not.
|
|
*/
|
|
#if defined(__GNUC__) && __GNUC__>=2
|
|
void OPENSSL_cpuid_setup(void) __attribute__((constructor));
|
|
extern unsigned long getauxval(unsigned long type) __attribute__((weak));
|
|
#else
|
|
static unsigned long (*getauxval)(unsigned long) = NULL;
|
|
#endif
|
|
|
|
/*
|
|
* ARM puts the the feature bits for Crypto Extensions in AT_HWCAP2, whereas
|
|
* AArch64 used AT_HWCAP.
|
|
*/
|
|
#if defined(__arm__) || defined (__arm)
|
|
# define HWCAP 16 /* AT_HWCAP */
|
|
# define HWCAP_NEON (1 << 12)
|
|
|
|
# define HWCAP_CE 26 /* 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 16 /* 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)
|
|
#endif
|
|
|
|
void OPENSSL_cpuid_setup(void)
|
|
{
|
|
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;
|
|
}
|
|
|
|
sigfillset(&all_masked);
|
|
sigdelset(&all_masked,SIGILL);
|
|
sigdelset(&all_masked,SIGTRAP);
|
|
sigdelset(&all_masked,SIGFPE);
|
|
sigdelset(&all_masked,SIGBUS);
|
|
sigdelset(&all_masked,SIGSEGV);
|
|
|
|
OPENSSL_armcap_P = 0;
|
|
|
|
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 (getauxval != NULL)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
else 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 (sigsetjmp(ill_jmp,1) == 0)
|
|
{
|
|
_armv7_tick();
|
|
OPENSSL_armcap_P |= ARMV7_TICK;
|
|
}
|
|
|
|
sigaction (SIGILL,&ill_oact,NULL);
|
|
sigprocmask(SIG_SETMASK,&oset,NULL);
|
|
}
|