diff options
Diffstat (limited to 'thirdparty/openssl/crypto/ppccap.c')
| -rw-r--r-- | thirdparty/openssl/crypto/ppccap.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/ppccap.c b/thirdparty/openssl/crypto/ppccap.c new file mode 100644 index 0000000000..74af4732b5 --- /dev/null +++ b/thirdparty/openssl/crypto/ppccap.c @@ -0,0 +1,159 @@ +#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 +#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_ppc64_probe(void); +void OPENSSL_altivec_probe(void); +void OPENSSL_crypto207_probe(void); + +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; + + 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); + + if ((e = getenv("OPENSSL_ppccap"))) { + OPENSSL_ppccap_P = strtoul(e, NULL, 0); + return; + } + + OPENSSL_ppccap_P = 0; + +#if defined(_AIX) + 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; + } +#endif + + 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 (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); +} |