| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #if defined(__linux) || defined(_AIX) |
| # include <sys/utsname.h> |
| #endif |
| #if defined(_AIX53) /* defined even on post-5.3 */ |
| # include <sys/systemcfg.h> |
| # if !defined(__power_set) |
| # define __power_set(a) (_system_configuration.implementation & (a)) |
| # endif |
| #endif |
| #include <openssl/crypto.h> |
| #include <openssl/bn.h> |
| |
| #include "ppc_arch.h" |
| |
| unsigned int OPENSSL_ppccap_P = 0; |
| |
| static sigset_t all_masked; |
| |
| #ifdef OPENSSL_BN_ASM_MONT |
| int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, |
| const BN_ULONG *np, const BN_ULONG *n0, int num) |
| { |
| int bn_mul_mont_fpu64(BN_ULONG *rp, const BN_ULONG *ap, |
| const BN_ULONG *bp, const BN_ULONG *np, |
| const BN_ULONG *n0, int num); |
| int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, |
| const BN_ULONG *np, const BN_ULONG *n0, int num); |
| |
| if (sizeof(size_t) == 4) { |
| # if 1 || (defined(__APPLE__) && defined(__MACH__)) |
| if (num >= 8 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) |
| return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); |
| # else |
| /* |
| * boundary of 32 was experimentally determined on Linux 2.6.22, |
| * might have to be adjusted on AIX... |
| */ |
| if (num >= 32 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) { |
| sigset_t oset; |
| int ret; |
| |
| sigprocmask(SIG_SETMASK, &all_masked, &oset); |
| ret = bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); |
| sigprocmask(SIG_SETMASK, &oset, NULL); |
| |
| return ret; |
| } |
| # endif |
| } else if ((OPENSSL_ppccap_P & PPC_FPU64)) |
| /* |
| * this is a "must" on POWER6, but run-time detection is not |
| * implemented yet... |
| */ |
| return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); |
| |
| return bn_mul_mont_int(rp, ap, bp, np, n0, num); |
| } |
| #endif |
| |
| void sha256_block_p8(void *ctx, const void *inp, size_t len); |
| void sha256_block_ppc(void *ctx, const void *inp, size_t len); |
| void sha256_block_data_order(void *ctx, const void *inp, size_t len) |
| { |
| OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) : |
| sha256_block_ppc(ctx, inp, len); |
| } |
| |
| void sha512_block_p8(void *ctx, const void *inp, size_t len); |
| void sha512_block_ppc(void *ctx, const void *inp, size_t len); |
| void sha512_block_data_order(void *ctx, const void *inp, size_t len) |
| { |
| OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) : |
| sha512_block_ppc(ctx, inp, len); |
| } |
| |
| static sigjmp_buf ill_jmp; |
| static void ill_handler(int sig) |
| { |
| siglongjmp(ill_jmp, sig); |
| } |
| |
| void OPENSSL_fpu_probe(void); |
| void OPENSSL_ppc64_probe(void); |
| void OPENSSL_altivec_probe(void); |
| void OPENSSL_crypto207_probe(void); |
| |
| /* |
| * 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. Note that this is *link-time* |
| * feature detection, not *run-time*. In other words if we link with |
| * symbol present, it's expected to be present even at run-time. |
| */ |
| #if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__) |
| extern unsigned long getauxval(unsigned long type) __attribute__ ((weak)); |
| #else |
| static unsigned long (*getauxval) (unsigned long) = NULL; |
| #endif |
| |
| /* I wish <sys/auxv.h> was universally available */ |
| #define HWCAP 16 /* AT_HWCAP */ |
| #define HWCAP_PPC64 (1U << 30) |
| #define HWCAP_ALTIVEC (1U << 28) |
| #define HWCAP_FPU (1U << 27) |
| #define HWCAP_POWER6_EXT (1U << 9) |
| #define HWCAP_VSX (1U << 7) |
| |
| #define HWCAP2 26 /* AT_HWCAP2 */ |
| #define HWCAP_VEC_CRYPTO (1U << 25) |
| |
| # if defined(__GNUC__) && __GNUC__>=2 |
| __attribute__ ((constructor)) |
| # 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_ppccap"))) { |
| OPENSSL_ppccap_P = strtoul(e, NULL, 0); |
| return; |
| } |
| |
| OPENSSL_ppccap_P = 0; |
| |
| #if defined(_AIX) |
| OPENSSL_ppccap_P |= PPC_FPU; |
| |
| if (sizeof(size_t) == 4) { |
| struct utsname uts; |
| # if defined(_SC_AIX_KERNEL_BITMODE) |
| if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64) |
| return; |
| # endif |
| if (uname(&uts) != 0 || atoi(uts.version) < 6) |
| return; |
| } |
| |
| # if defined(__power_set) |
| /* |
| * Value used in __power_set is a single-bit 1<<n one denoting |
| * specific processor class. Incidentally 0xffffffff<<n can be |
| * used to denote specific processor and its successors. |
| */ |
| if (sizeof(size_t) == 4) { |
| /* In 32-bit case PPC_FPU64 is always fastest [if option] */ |
| if (__power_set(0xffffffffU<<13)) /* POWER5 and later */ |
| OPENSSL_ppccap_P |= PPC_FPU64; |
| } else { |
| /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ |
| if (__power_set(0x1U<<14)) /* POWER6 */ |
| OPENSSL_ppccap_P |= PPC_FPU64; |
| } |
| |
| if (__power_set(0xffffffffU<<14)) /* POWER6 and later */ |
| OPENSSL_ppccap_P |= PPC_ALTIVEC; |
| |
| if (__power_set(0xffffffffU<<16)) /* POWER8 and later */ |
| OPENSSL_ppccap_P |= PPC_CRYPTO207; |
| |
| return; |
| # endif |
| #endif |
| |
| if (getauxval != NULL) { |
| unsigned long hwcap = getauxval(HWCAP); |
| |
| if (hwcap & HWCAP_FPU) { |
| OPENSSL_ppccap_P |= PPC_FPU; |
| |
| if (sizeof(size_t) == 4) { |
| /* In 32-bit case PPC_FPU64 is always fastest [if option] */ |
| if (hwcap & HWCAP_PPC64) |
| OPENSSL_ppccap_P |= PPC_FPU64; |
| } else { |
| /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ |
| if (hwcap & HWCAP_POWER6_EXT) |
| OPENSSL_ppccap_P |= PPC_FPU64; |
| } |
| } |
| |
| if (hwcap & HWCAP_ALTIVEC) { |
| OPENSSL_ppccap_P |= PPC_ALTIVEC; |
| |
| if ((hwcap & HWCAP_VSX) && (getauxval(HWCAP2) & HWCAP_VEC_CRYPTO)) |
| OPENSSL_ppccap_P |= PPC_CRYPTO207; |
| } |
| |
| return; |
| } |
| |
| sigfillset(&all_masked); |
| sigdelset(&all_masked, SIGILL); |
| sigdelset(&all_masked, SIGTRAP); |
| #ifdef SIGEMT |
| sigdelset(&all_masked, SIGEMT); |
| #endif |
| 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 (sigsetjmp(ill_jmp,1) == 0) { |
| OPENSSL_fpu_probe(); |
| OPENSSL_ppccap_P |= PPC_FPU; |
| |
| if (sizeof(size_t) == 4) { |
| #ifdef __linux |
| struct utsname uts; |
| if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0) |
| #endif |
| if (sigsetjmp(ill_jmp, 1) == 0) { |
| OPENSSL_ppc64_probe(); |
| OPENSSL_ppccap_P |= PPC_FPU64; |
| } |
| } else { |
| /* |
| * Wanted code detecting POWER6 CPU and setting PPC_FPU64 |
| */ |
| } |
| } |
| |
| if (sigsetjmp(ill_jmp, 1) == 0) { |
| OPENSSL_altivec_probe(); |
| OPENSSL_ppccap_P |= PPC_ALTIVEC; |
| if (sigsetjmp(ill_jmp, 1) == 0) { |
| OPENSSL_crypto207_probe(); |
| OPENSSL_ppccap_P |= PPC_CRYPTO207; |
| } |
| } |
| |
| sigaction(SIGILL, &ill_oact, NULL); |
| sigprocmask(SIG_SETMASK, &oset, NULL); |
| } |