[thirdparty/openssl.git] / crypto / ppccap.c

/*
 * Copyright 2009-2016 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 <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
#if defined(__APPLE__) && defined(__MACH__)
# include <sys/types.h>
# include <sys/sysctl.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_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
                        const BN_ULONG *np, const BN_ULONG *n0, int num);
    int bn_mul4x_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
                          const BN_ULONG *np, const BN_ULONG *n0, int num);

    if (num < 4)
        return 0;

    if ((num & 3) == 0)
        return bn_mul4x_mont_int(rp, ap, bp, np, n0, num);

    /*
     * There used to be [optional] call to bn_mul_mont_fpu64 here,
     * but above subroutine is faster on contemporary processors.
     * Formulation means that there might be old processors where
     * FPU code path would be faster, POWER6 perhaps, but there was
     * no opportunity to figure it out...
     */

    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);
}

#ifndef OPENSSL_NO_CHACHA
void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp,
                        size_t len, const unsigned int key[8],
                        const unsigned int counter[4]);
void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp,
                        size_t len, const unsigned int key[8],
                        const unsigned int counter[4]);
void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
                    size_t len, const unsigned int key[8],
                    const unsigned int counter[4])
{
    OPENSSL_ppccap_P & PPC_ALTIVEC
        ? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
        : ChaCha20_ctr32_int(out, inp, len, key, counter);
}
#endif

#ifndef OPENSSL_NO_POLY1305
void poly1305_init_int(void *ctx, const unsigned char key[16]);
void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,
                         unsigned int padbit);
void poly1305_emit(void *ctx, unsigned char mac[16],
                       const unsigned int nonce[4]);
void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len,
                         unsigned int padbit);
void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
                       const unsigned int nonce[4]);
int poly1305_init(void *ctx, const unsigned char key[16], void *func[2])
{
    if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
        poly1305_init_fpu(ctx, key);
        func[0] = poly1305_blocks_fpu;
        func[1] = poly1305_emit_fpu;
    } else {
        poly1305_init_int(ctx, key);
        func[0] = poly1305_blocks;
        func[1] = poly1305_emit;
    }
    return 1;
}
#endif

#ifdef ECP_NISTZ256_ASM
void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
                           const unsigned long b[4]);

void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4])
{
    static const unsigned long RR[] = { 0x0000000000000003U,
                                        0xfffffffbffffffffU,
                                        0xfffffffffffffffeU,
                                        0x00000004fffffffdU };

    ecp_nistz256_mul_mont(res, in, RR);
}

void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4])
{
    static const unsigned long one[] = { 1, 0, 0, 0 };

    ecp_nistz256_mul_mont(res, in, one);
}
#endif

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);
void OPENSSL_madd300_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)
#define HWCAP_ARCH_3_00         (1U << 23)

# 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;

    if (__power_set(0xffffffffU<<17))           /* POWER9 and later */
        OPENSSL_ppccap_P |= PPC_MADD300;

    return;
# endif
#endif

#if defined(__APPLE__) && defined(__MACH__)
    OPENSSL_ppccap_P |= PPC_FPU;

    {
        int val;
        size_t len = sizeof(val);

        if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) {
            if (val)
                OPENSSL_ppccap_P |= PPC_FPU64;
        }

        len = sizeof(val);
        if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) {
            if (val)
                OPENSSL_ppccap_P |= PPC_ALTIVEC;
        }

        return;
    }
#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;
        }

        if (hwcap & HWCAP_ARCH_3_00) {
            OPENSSL_ppccap_P |= PPC_MADD300;
        }

        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;
        }
    }

    if (sigsetjmp(ill_jmp, 1) == 0) {
        OPENSSL_madd300_probe();
        OPENSSL_ppccap_P |= PPC_MADD300;
    }

    sigaction(SIGILL, &ill_oact, NULL);
    sigprocmask(SIG_SETMASK, &oset, NULL);
}
Commit	Line	Data
b1322259 RS	1	/*
	2	* Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved.
	3	*
	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
	8	*/
	9
b4b48a10 AP	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <setjmp.h>
	14	#include <signal.h>
fd054957	15	#include <unistd.h>
d5630dd6	16	#if defined(__linux) \|\| defined(_AIX)
0f113f3e	17	# include <sys/utsname.h>
78c3e205	18	#endif
2688d999 AP	19	#if defined(_AIX53) /* defined even on post-5.3 */
	20	# include <sys/systemcfg.h>
	21	# if !defined(__power_set)
	22	# define __power_set(a) (_system_configuration.implementation & (a))
	23	# endif
	24	#endif
0bd93bbe AP	25	#if defined(__APPLE__) && defined(__MACH__)
	26	# include <sys/types.h>
	27	# include <sys/sysctl.h>
	28	#endif
11252459	29	#include <openssl/crypto.h>
10b0b5ec	30	#include <openssl/bn.h>
b4b48a10	31
0e716d92	32	#include "ppc_arch.h"
b4b48a10	33
07f3e4f3	34	unsigned int OPENSSL_ppccap_P = 0;
b4b48a10 AP	35
	36	static sigset_t all_masked;
	37
10b0b5ec RL	38	#ifdef OPENSSL_BN_ASM_MONT
	39	int bn_mul_mont(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	40	const BN_ULONG np, const BN_ULONG n0, int num)
	41	{
	42	int bn_mul_mont_int(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	43	const BN_ULONG np, const BN_ULONG n0, int num);
	44	int bn_mul4x_mont_int(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	45	const BN_ULONG np, const BN_ULONG n0, int num);
	46
	47	if (num < 4)
	48	return 0;
	49
	50	if ((num & 3) == 0)
	51	return bn_mul4x_mont_int(rp, ap, bp, np, n0, num);
	52
	53	/*
	54	* There used to be [optional] call to bn_mul_mont_fpu64 here,
	55	* but above subroutine is faster on contemporary processors.
	56	* Formulation means that there might be old processors where
	57	* FPU code path would be faster, POWER6 perhaps, but there was
	58	* no opportunity to figure it out...
	59	*/
	60
	61	return bn_mul_mont_int(rp, ap, bp, np, n0, num);
	62	}
	63	#endif
	64
	65	void sha256_block_p8(void ctx, const void inp, size_t len);
	66	void sha256_block_ppc(void ctx, const void inp, size_t len);
	67	void sha256_block_data_order(void ctx, const void inp, size_t len)
	68	{
	69	OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) :
	70	sha256_block_ppc(ctx, inp, len);
	71	}
	72
	73	void sha512_block_p8(void ctx, const void inp, size_t len);
	74	void sha512_block_ppc(void ctx, const void inp, size_t len);
	75	void sha512_block_data_order(void ctx, const void inp, size_t len)
	76	{
	77	OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) :
	78	sha512_block_ppc(ctx, inp, len);
	79	}
	80
	81	#ifndef OPENSSL_NO_CHACHA
	82	void ChaCha20_ctr32_int(unsigned char out, const unsigned char inp,
	83	size_t len, const unsigned int key[8],
	84	const unsigned int counter[4]);
	85	void ChaCha20_ctr32_vmx(unsigned char out, const unsigned char inp,
	86	size_t len, const unsigned int key[8],
	87	const unsigned int counter[4]);
	88	void ChaCha20_ctr32(unsigned char out, const unsigned char inp,
	89	size_t len, const unsigned int key[8],
	90	const unsigned int counter[4])
	91	{
	92	OPENSSL_ppccap_P & PPC_ALTIVEC
	93	? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
	94	: ChaCha20_ctr32_int(out, inp, len, key, counter);
	95	}
	96	#endif
	97
	98	#ifndef OPENSSL_NO_POLY1305
	99	void poly1305_init_int(void *ctx, const unsigned char key[16]);
	100	void poly1305_blocks(void ctx, const unsigned char inp, size_t len,
	101	unsigned int padbit);
102	void poly1305_emit(void *ctx, unsigned char mac[16],
103	const unsigned int nonce[4]);
104	void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
105	void poly1305_blocks_fpu(void ctx, const unsigned char inp, size_t len,
106	unsigned int padbit);
107	void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
108	const unsigned int nonce[4]);
109	int poly1305_init(void ctx, const unsigned char key[16], void func[2])
110	{
111	if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
112	poly1305_init_fpu(ctx, key);
113	func[0] = poly1305_blocks_fpu;
114	func[1] = poly1305_emit_fpu;
115	} else {
116	poly1305_init_int(ctx, key);
117	func[0] = poly1305_blocks;
118	func[1] = poly1305_emit;
119	}
120	return 1;
121	}
122	#endif
123
124	#ifdef ECP_NISTZ256_ASM
125	void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
126	const unsigned long b[4]);
127
128	void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
129	void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4])
130	{
131	static const unsigned long RR[] = { 0x0000000000000003U,
132	0xfffffffbffffffffU,
133	0xfffffffffffffffeU,
134	0x00000004fffffffdU };
135
136	ecp_nistz256_mul_mont(res, in, RR);
137	}
138
139	void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
140	void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4])
141	{
142	static const unsigned long one[] = { 1, 0, 0, 0 };
143
144	ecp_nistz256_mul_mont(res, in, one);
145	}
146	#endif
147
b4b48a10	148	static sigjmp_buf ill_jmp;
0f113f3e MC	149	static void ill_handler(int sig)
	150	{
	151	siglongjmp(ill_jmp, sig);
	152	}
b4b48a10	153
2688d999	154	void OPENSSL_fpu_probe(void);
70b76d39	155	void OPENSSL_ppc64_probe(void);
fd054957	156	void OPENSSL_altivec_probe(void);
de51e830	157	void OPENSSL_crypto207_probe(void);
53385e1f	158	void OPENSSL_madd300_probe(void);
70b76d39	159
2688d999 AP	160	/*
	161	* Use a weak reference to getauxval() so we can use it if it is available
	162	* but don't break the build if it is not. Note that this is link-time
	163	* feature detection, not run-time. In other words if we link with
	164	* symbol present, it's expected to be present even at run-time.
	165	*/
	166	#if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__)
	167	extern unsigned long getauxval(unsigned long type) __attribute__ ((weak));
	168	#else
	169	static unsigned long (*getauxval) (unsigned long) = NULL;
	170	#endif
	171
	172	/* I wish <sys/auxv.h> was universally available */
	173	#define HWCAP 16 /* AT_HWCAP */
	174	#define HWCAP_PPC64 (1U << 30)
	175	#define HWCAP_ALTIVEC (1U << 28)
	176	#define HWCAP_FPU (1U << 27)
	177	#define HWCAP_POWER6_EXT (1U << 9)
	178	#define HWCAP_VSX (1U << 7)
	179
	180	#define HWCAP2 26 /* AT_HWCAP2 */
	181	#define HWCAP_VEC_CRYPTO (1U << 25)
e0e53282	182	#define HWCAP_ARCH_3_00 (1U << 23)
2688d999 AP	183
	184	# if defined(__GNUC__) && __GNUC__>=2
	185	__attribute__ ((constructor))
	186	# endif
b4b48a10	187	void OPENSSL_cpuid_setup(void)
0f113f3e MC	188	{
	189	char *e;
	190	struct sigaction ill_oact, ill_act;
	191	sigset_t oset;
	192	static int trigger = 0;
	193
	194	if (trigger)
	195	return;
	196	trigger = 1;
	197
0f113f3e MC	198	if ((e = getenv("OPENSSL_ppccap"))) {
	199	OPENSSL_ppccap_P = strtoul(e, NULL, 0);
	200	return;
	201	}
b4b48a10	202
0f113f3e	203	OPENSSL_ppccap_P = 0;
6415dd7b	204
fd054957	205	#if defined(_AIX)
2688d999 AP	206	OPENSSL_ppccap_P \|= PPC_FPU;
2688d999 AP	207
0f113f3e MC	208	if (sizeof(size_t) == 4) {
0f113f3e MC	209	struct utsname uts;
fd054957	210	# if defined(_SC_AIX_KERNEL_BITMODE)
0f113f3e MC	211	if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64)
0f113f3e MC	212	return;
fd054957	213	# endif
0f113f3e MC	214	if (uname(&uts) != 0 \|\| atoi(uts.version) < 6)
	215	return;
	216	}
2688d999 AP	217
	218	# if defined(__power_set)
	219	/*
	220	* Value used in __power_set is a single-bit 1<<n one denoting
	221	* specific processor class. Incidentally 0xffffffff<<n can be
	222	* used to denote specific processor and its successors.
	223	*/
	224	if (sizeof(size_t) == 4) {
	225	/* In 32-bit case PPC_FPU64 is always fastest [if option] */
	226	if (__power_set(0xffffffffU<<13)) /* POWER5 and later */
	227	OPENSSL_ppccap_P \|= PPC_FPU64;
	228	} else {
	229	/* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
	230	if (__power_set(0x1U<<14)) /* POWER6 */
	231	OPENSSL_ppccap_P \|= PPC_FPU64;
	232	}
	233
	234	if (__power_set(0xffffffffU<<14)) /* POWER6 and later */
	235	OPENSSL_ppccap_P \|= PPC_ALTIVEC;
	236
	237	if (__power_set(0xffffffffU<<16)) /* POWER8 and later */
	238	OPENSSL_ppccap_P \|= PPC_CRYPTO207;
	239
e0e53282 AP	240	if (__power_set(0xffffffffU<<17)) /* POWER9 and later */
	241	OPENSSL_ppccap_P \|= PPC_MADD300;
	242
2688d999 AP	243	return;
	244	# endif
	245	#endif
	246
0bd93bbe AP	247	#if defined(__APPLE__) && defined(__MACH__)
	248	OPENSSL_ppccap_P \|= PPC_FPU;
	249
	250	{
	251	int val;
	252	size_t len = sizeof(val);
	253
	254	if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) {
	255	if (val)
	256	OPENSSL_ppccap_P \|= PPC_FPU64;
	257	}
	258
	259	len = sizeof(val);
	260	if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) {
	261	if (val)
	262	OPENSSL_ppccap_P \|= PPC_ALTIVEC;
	263	}
	264
	265	return;
	266	}
	267	#endif
	268
2688d999 AP	269	if (getauxval != NULL) {
	270	unsigned long hwcap = getauxval(HWCAP);
	271
	272	if (hwcap & HWCAP_FPU) {
dccd20d1	273	OPENSSL_ppccap_P \|= PPC_FPU;
2688d999 AP	274
	275	if (sizeof(size_t) == 4) {
	276	/* In 32-bit case PPC_FPU64 is always fastest [if option] */
	277	if (hwcap & HWCAP_PPC64)
	278	OPENSSL_ppccap_P \|= PPC_FPU64;
	279	} else {
	280	/* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
	281	if (hwcap & HWCAP_POWER6_EXT)
	282	OPENSSL_ppccap_P \|= PPC_FPU64;
	283	}
	284	}
	285
	286	if (hwcap & HWCAP_ALTIVEC) {
	287	OPENSSL_ppccap_P \|= PPC_ALTIVEC;
	288
	289	if ((hwcap & HWCAP_VSX) && (getauxval(HWCAP2) & HWCAP_VEC_CRYPTO))
	290	OPENSSL_ppccap_P \|= PPC_CRYPTO207;
	291	}
	292
e0e53282 AP	293	if (hwcap & HWCAP_ARCH_3_00) {
	294	OPENSSL_ppccap_P \|= PPC_MADD300;
	295	}
	296
2688d999 AP	297	return;
	298	}
	299
	300	sigfillset(&all_masked);
	301	sigdelset(&all_masked, SIGILL);
	302	sigdelset(&all_masked, SIGTRAP);
	303	#ifdef SIGEMT
	304	sigdelset(&all_masked, SIGEMT);
fd054957	305	#endif
2688d999 AP	306	sigdelset(&all_masked, SIGFPE);
	307	sigdelset(&all_masked, SIGBUS);
	308	sigdelset(&all_masked, SIGSEGV);
fd054957	309
0f113f3e MC	310	memset(&ill_act, 0, sizeof(ill_act));
	311	ill_act.sa_handler = ill_handler;
	312	ill_act.sa_mask = all_masked;
6415dd7b	313
0f113f3e MC	314	sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
0f113f3e MC	315	sigaction(SIGILL, &ill_act, &ill_oact);
6415dd7b	316
2688d999 AP	317	if (sigsetjmp(ill_jmp,1) == 0) {
	318	OPENSSL_fpu_probe();
	319	OPENSSL_ppccap_P \|= PPC_FPU;
	320
	321	if (sizeof(size_t) == 4) {
78c3e205	322	#ifdef __linux
2688d999 AP	323	struct utsname uts;
2688d999 AP	324	if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0)
78c3e205	325	#endif
2688d999 AP	326	if (sigsetjmp(ill_jmp, 1) == 0) {
	327	OPENSSL_ppc64_probe();
	328	OPENSSL_ppccap_P \|= PPC_FPU64;
	329	}
	330	} else {
	331	/*
	332	* Wanted code detecting POWER6 CPU and setting PPC_FPU64
	333	*/
	334	}
0f113f3e MC	335	}
	336
	337	if (sigsetjmp(ill_jmp, 1) == 0) {
	338	OPENSSL_altivec_probe();
	339	OPENSSL_ppccap_P \|= PPC_ALTIVEC;
	340	if (sigsetjmp(ill_jmp, 1) == 0) {
	341	OPENSSL_crypto207_probe();
	342	OPENSSL_ppccap_P \|= PPC_CRYPTO207;
	343	}
	344	}
	345
e0e53282 AP	346	if (sigsetjmp(ill_jmp, 1) == 0) {
	347	OPENSSL_madd300_probe();
	348	OPENSSL_ppccap_P \|= PPC_MADD300;
	349	}
	350
0f113f3e MC	351	sigaction(SIGILL, &ill_oact, NULL);
	352	sigprocmask(SIG_SETMASK, &oset, NULL);
	353	}