projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| 87873f43 AP |
1 | #include <stdio.h> |
| 2 | #include <stdlib.h> | |
| 3 | #include <string.h> | |
| 4 | #include <setjmp.h> | |
| 5 | #include <signal.h> | |
| 6 | #include <crypto.h> | |
| 7 | ||
| 8 | #include "arm_arch.h" | |
| 9 | ||
| 10 | unsigned int OPENSSL_armcap_P; | |
| 11 | ||
| 12 | static sigset_t all_masked; | |
| 13 | ||
| 14 | static sigjmp_buf ill_jmp; | |
| 15 | static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); } | |
| 16 | ||
| 17 | /* | |
| 18 | * Following subroutines could have been inlined, but it's not all | |
| 19 | * ARM compilers support inline assembler... | |
| 20 | */ | |
| 21 | void _armv7_neon_probe(void); | |
| 4afa9f03 AP |
22 | void _armv8_aes_probe(void); |
| 23 | void _armv8_sha1_probe(void); | |
| 24 | void _armv8_sha256_probe(void); | |
| 25 | void _armv8_pmull_probe(void); | |
| 87873f43 AP |
26 | unsigned int _armv7_tick(void); |
| 27 | ||
| 28 | unsigned int OPENSSL_rdtsc(void) | |
| 29 | { | |
| 8e52a906 | 30 | if (OPENSSL_armcap_P & ARMV7_TICK) |
| 87873f43 AP |
31 | return _armv7_tick(); |
| 32 | else | |
| 33 | return 0; | |
| 34 | } | |
| 35 | ||
| 033a25ce | 36 | #if defined(__GNUC__) && __GNUC__>=2 |
| 482cdf24 | 37 | void OPENSSL_cpuid_setup(void) __attribute__((constructor)); |
| 033a25ce | 38 | #endif |
| 87873f43 AP |
39 | void OPENSSL_cpuid_setup(void) |
| 40 | { | |
| 41 | char *e; | |
| 42 | struct sigaction ill_oact,ill_act; | |
| 43 | sigset_t oset; | |
| 44 | static int trigger=0; | |
| 45 | ||
| 46 | if (trigger) return; | |
| 47 | trigger=1; | |
| 48 | ||
| 49 | if ((e=getenv("OPENSSL_armcap"))) | |
| 50 | { | |
| 51 | OPENSSL_armcap_P=strtoul(e,NULL,0); | |
| 52 | return; | |
| 53 | } | |
| 54 | ||
| 55 | sigfillset(&all_masked); | |
| 56 | sigdelset(&all_masked,SIGILL); | |
| 57 | sigdelset(&all_masked,SIGTRAP); | |
| 58 | sigdelset(&all_masked,SIGFPE); | |
| 59 | sigdelset(&all_masked,SIGBUS); | |
| 60 | sigdelset(&all_masked,SIGSEGV); | |
| 61 | ||
| 62 | OPENSSL_armcap_P = 0; | |
| 63 | ||
| 64 | memset(&ill_act,0,sizeof(ill_act)); | |
| 65 | ill_act.sa_handler = ill_handler; | |
| 66 | ill_act.sa_mask = all_masked; | |
| 67 | ||
| 68 | sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset); | |
| 69 | sigaction(SIGILL,&ill_act,&ill_oact); | |
| 70 | ||
| 71 | if (sigsetjmp(ill_jmp,1) == 0) | |
| 72 | { | |
| 73 | _armv7_neon_probe(); | |
| 74 | OPENSSL_armcap_P |= ARMV7_NEON; | |
| 4afa9f03 AP |
75 | if (sigsetjmp(ill_jmp,1) == 0) |
| 76 | { | |
| 77 | _armv8_aes_probe(); | |
| 78 | OPENSSL_armcap_P |= ARMV8_AES; | |
| 79 | } | |
| 80 | if (sigsetjmp(ill_jmp,1) == 0) | |
| 81 | { | |
| 82 | _armv8_sha1_probe(); | |
| 83 | OPENSSL_armcap_P |= ARMV8_SHA1; | |
| 84 | } | |
| 85 | if (sigsetjmp(ill_jmp,1) == 0) | |
| 86 | { | |
| 87 | _armv8_sha256_probe(); | |
| 88 | OPENSSL_armcap_P |= ARMV8_SHA256; | |
| 89 | } | |
| 90 | if (sigsetjmp(ill_jmp,1) == 0) | |
| 91 | { | |
| 92 | _armv8_pmull_probe(); | |
| 93 | OPENSSL_armcap_P |= ARMV8_PMULL; | |
| 94 | } | |
| 87873f43 AP |
95 | } |
| 96 | if (sigsetjmp(ill_jmp,1) == 0) | |
| 97 | { | |
| 98 | _armv7_tick(); | |
| 99 | OPENSSL_armcap_P |= ARMV7_TICK; | |
| 100 | } | |
| 101 | ||
| 102 | sigaction (SIGILL,&ill_oact,NULL); | |
| 103 | sigprocmask(SIG_SETMASK,&oset,NULL); | |
| 104 | } |