[thirdparty/openssl.git] / crypto / sparcv9cap.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/time.h>
#include <unistd.h>
#include <openssl/bn.h>

#include "sparc_arch.h"

#if defined(__GNUC__) && defined(__linux)
__attribute__ ((visibility("hidden")))
#endif
unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 };

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_vis3(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_fpu(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 (!(num & 1) && num >= 6) {
        if ((num & 15) == 0 && num <= 64 &&
            (OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) ==
            (CFR_MONTMUL | CFR_MONTSQR)) {
            typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap,
                                          const BN_ULONG *bp,
                                          const BN_ULONG *np,
                                          const BN_ULONG *n0);
            int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap,
                                 const BN_ULONG *bp, const BN_ULONG *np,
                                 const BN_ULONG *n0);
            int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap,
                                  const BN_ULONG *bp, const BN_ULONG *np,
                                  const BN_ULONG *n0);
            int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap,
                                  const BN_ULONG *bp, const BN_ULONG *np,
                                  const BN_ULONG *n0);
            int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap,
                                  const BN_ULONG *bp, const BN_ULONG *np,
                                  const BN_ULONG *n0);
            static const bn_mul_mont_f funcs[4] = {
                bn_mul_mont_t4_8, bn_mul_mont_t4_16,
                bn_mul_mont_t4_24, bn_mul_mont_t4_32
            };
            bn_mul_mont_f worker = funcs[num / 16 - 1];

            if ((*worker) (rp, ap, bp, np, n0))
                return 1;
            /* retry once and fall back */
            if ((*worker) (rp, ap, bp, np, n0))
                return 1;
            return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
        }
        if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
            return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
        else if (num >= 8 &&
                 (OPENSSL_sparcv9cap_P[0] &
                  (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
                 (SPARCV9_PREFER_FPU | SPARCV9_VIS1))
            return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
    }
    return bn_mul_mont_int(rp, ap, bp, np, n0, num);
}

unsigned long _sparcv9_rdtick(void);
void _sparcv9_vis1_probe(void);
unsigned long _sparcv9_vis1_instrument(void);
void _sparcv9_vis2_probe(void);
void _sparcv9_fmadd_probe(void);
unsigned long _sparcv9_rdcfr(void);
void _sparcv9_vis3_probe(void);
unsigned long _sparcv9_random(void);
size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t);
size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t);

unsigned long OPENSSL_rdtsc(void)
{
    if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED)
#if defined(__sun) && defined(__SVR4)
        return gethrtime();
#else
        return 0;
#endif
    else
        return _sparcv9_rdtick();
}

size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt)
{
    if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
        SPARCV9_BLK)
        return _sparcv9_vis1_instrument_bus(out, cnt);
    else
        return 0;
}

size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max)
{
    if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
        SPARCV9_BLK)
        return _sparcv9_vis1_instrument_bus2(out, cnt, max);
    else
        return 0;
}

#if 0 && defined(__sun) && defined(__SVR4)
/*
 * This code path is disabled, because of incompatibility of libdevinfo.so.1
 * and libmalloc.so.1 (see below for details)
 */
# include <malloc.h>
# include <dlfcn.h>
# include <libdevinfo.h>
# include <sys/systeminfo.h>

typedef di_node_t(*di_init_t) (const char *, uint_t);
typedef void (*di_fini_t) (di_node_t);
typedef char *(*di_node_name_t) (di_node_t);
typedef int (*di_walk_node_t) (di_node_t, uint_t, di_node_name_t,
                               int (*)(di_node_t, di_node_name_t));

# define DLLINK(h,name) (name=(name##_t)dlsym((h),#name))

static int walk_nodename(di_node_t node, di_node_name_t di_node_name)
{
    char *name = (*di_node_name) (node);

    /* This is expected to catch all UltraSPARC flavors prior T1 */
    if (!strcmp(name, "SUNW,UltraSPARC") ||
        /* covers II,III,IV */
        !strncmp(name, "SUNW,UltraSPARC-I", 17)) {
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU | SPARCV9_VIS1;

        /* %tick is privileged only on UltraSPARC-I/II, but not IIe */
        if (name[14] != '\0' && name[17] != '\0' && name[18] != '\0')
            OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;

        return DI_WALK_TERMINATE;
    }
    /* This is expected to catch remaining UltraSPARCs, such as T1 */
    else if (!strncmp(name, "SUNW,UltraSPARC", 15)) {
        OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;

        return DI_WALK_TERMINATE;
    }

    return DI_WALK_CONTINUE;
}

void OPENSSL_cpuid_setup(void)
{
    void *h;
    char *e, si[256];
    static int trigger = 0;

    if (trigger)
        return;
    trigger = 1;

    if ((e = getenv("OPENSSL_sparcv9cap"))) {
        OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
        return;
    }

    if (sysinfo(SI_MACHINE, si, sizeof(si)) > 0) {
        if (strcmp(si, "sun4v"))
            /* FPU is preferred for all CPUs, but US-T1/2 */
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU;
    }

    if (sysinfo(SI_ISALIST, si, sizeof(si)) > 0) {
        if (strstr(si, "+vis"))
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK;
        if (strstr(si, "+vis2")) {
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
            OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
            return;
        }
    }
# ifdef M_KEEP
    /*
     * Solaris libdevinfo.so.1 is effectively incomatible with
     * libmalloc.so.1. Specifically, if application is linked with
     * -lmalloc, it crashes upon startup with SIGSEGV in
     * free(3LIBMALLOC) called by di_fini. Prior call to
     * mallopt(M_KEEP,0) somehow helps... But not always...
     */
    if ((h = dlopen(NULL, RTLD_LAZY))) {
        union {
            void *p;
            int (*f) (int, int);
        } sym;
        if ((sym.p = dlsym(h, "mallopt")))
            (*sym.f) (M_KEEP, 0);
        dlclose(h);
    }
# endif
    if ((h = dlopen("libdevinfo.so.1", RTLD_LAZY)))
        do {
            di_init_t di_init;
            di_fini_t di_fini;
            di_walk_node_t di_walk_node;
            di_node_name_t di_node_name;
            di_node_t root_node;

            if (!DLLINK(h, di_init))
                break;
            if (!DLLINK(h, di_fini))
                break;
            if (!DLLINK(h, di_walk_node))
                break;
            if (!DLLINK(h, di_node_name))
                break;

            if ((root_node = (*di_init) ("/", DINFOSUBTREE)) != DI_NODE_NIL) {
                (*di_walk_node) (root_node, DI_WALK_SIBFIRST,
                                 di_node_name, walk_nodename);
                (*di_fini) (root_node);
            }
        } while (0);

    if (h)
        dlclose(h);
}

#else

static sigjmp_buf common_jmp;
static void common_handler(int sig)
{
    siglongjmp(common_jmp, sig);
}

#if defined(__sun) && defined(__SVR4)
# if defined(__GNUC__) && __GNUC__>=2
extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak));
# elif defined(__SUNPRO_C)
#pragma weak getisax
extern unsigned int getisax(unsigned int vec[], unsigned int sz);
# else
static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL;
# endif
#endif

void OPENSSL_cpuid_setup(void)
{
    char *e;
    struct sigaction common_act, ill_oact, bus_oact;
    sigset_t all_masked, oset;
    static int trigger = 0;

    if (trigger)
        return;
    trigger = 1;

    if ((e = getenv("OPENSSL_sparcv9cap"))) {
        OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
        if ((e = strchr(e, ':')))
            OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0);
        return;
    }

#if defined(__sun) && defined(__SVR4)
    if (getisax != NULL) {
        unsigned int vec[1];

        if (getisax (vec,1)) {
            if (vec[0]&0x0020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1;
            if (vec[0]&0x0040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
            if (vec[0]&0x0080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK;
            if (vec[0]&0x0100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
            if (vec[0]&0x0400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;

            /* reconstruct %cfr copy */
            OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff;
            OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1;
            if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C;

            /* Some heuristics */
            /* all known VIS2-capable CPUs have unprivileged tick counter */
            if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2)
                OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;

            OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU;

            /* detect UltraSPARC-Tx, see sparccpud.S for details... */
            if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) &&
                _sparcv9_vis1_instrument() >= 12)
                OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
        }

        if (sizeof(size_t) == 8)
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;

        return;
    }
#endif

    /* Initial value, fits UltraSPARC-I&II... */
    OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU | SPARCV9_TICK_PRIVILEGED;

    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);
    sigprocmask(SIG_SETMASK, &all_masked, &oset);

    memset(&common_act, 0, sizeof(common_act));
    common_act.sa_handler = common_handler;
    common_act.sa_mask = all_masked;

    sigaction(SIGILL, &common_act, &ill_oact);
    sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on
                                                * Linux] */

    if (sigsetjmp(common_jmp, 1) == 0) {
        _sparcv9_rdtick();
        OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
    }

    if (sigsetjmp(common_jmp, 1) == 0) {
        _sparcv9_vis1_probe();
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK;
        /* detect UltraSPARC-Tx, see sparccpud.S for details... */
        if (_sparcv9_vis1_instrument() >= 12)
            OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
        else {
            _sparcv9_vis2_probe();
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
        }
    }

    if (sigsetjmp(common_jmp, 1) == 0) {
        _sparcv9_fmadd_probe();
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
    }

    /*
     * VIS3 flag is tested independently from VIS1, unlike VIS2 that is,
     * because VIS3 defines even integer instructions.
     */
    if (sigsetjmp(common_jmp, 1) == 0) {
        _sparcv9_vis3_probe();
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
    }
# if 0                          /* was planned at some point but never
                                 * implemented in hardware */
    if (sigsetjmp(common_jmp, 1) == 0) {
        (void)_sparcv9_random();
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_RANDOM;
    }
# endif

    /*
     * In wait for better solution _sparcv9_rdcfr is masked by
     * VIS3 flag, because it goes to uninterruptable endless
     * loop on UltraSPARC II running Solaris. Things might be
     * different on Linux...
     */
    if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) &&
        sigsetjmp(common_jmp, 1) == 0) {
        OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr();
    }

    sigaction(SIGBUS, &bus_oact, NULL);
    sigaction(SIGILL, &ill_oact, NULL);

    sigprocmask(SIG_SETMASK, &oset, NULL);

    if (sizeof(size_t) == 8)
        OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
# ifdef __linux
    else {
        int ret = syscall(340);

        if (ret >= 0 && ret & 1)
            OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
    }
# endif
}

#endif
Commit	Line	Data
c06b0f3d AP	1	#include <stdio.h>
	2	#include <stdlib.h>
	3	#include <string.h>
40b6d493 DSH	4	#include <setjmp.h>
40b6d493 DSH	5	#include <signal.h>
c06b0f3d	6	#include <sys/time.h>
48b7b96b	7	#include <unistd.h>
c06b0f3d AP	8	#include <openssl/bn.h>
c06b0f3d AP	9
48b7b96b	10	#include "sparc_arch.h"
40b6d493	11
48b7b96b	12	#if defined(__GNUC__) && defined(__linux)
ae5c8664	13	__attribute__ ((visibility("hidden")))
48b7b96b	14	#endif
ae5c8664 MC	15	unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 };
	16
	17	int bn_mul_mont(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	18	const BN_ULONG np, const BN_ULONG n0, int num)
	19	{
	20	int bn_mul_mont_vis3(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	21	const BN_ULONG np, const BN_ULONG n0, int num);
	22	int bn_mul_mont_fpu(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	23	const BN_ULONG np, const BN_ULONG n0, int num);
	24	int bn_mul_mont_int(BN_ULONG rp, const BN_ULONG ap, const BN_ULONG *bp,
	25	const BN_ULONG np, const BN_ULONG n0, int num);
	26
	27	if (!(num & 1) && num >= 6) {
	28	if ((num & 15) == 0 && num <= 64 &&
	29	(OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL \| CFR_MONTSQR)) ==
	30	(CFR_MONTMUL \| CFR_MONTSQR)) {
	31	typedef int (bn_mul_mont_f) (BN_ULONG rp, const BN_ULONG *ap,
	32	const BN_ULONG *bp,
	33	const BN_ULONG *np,
	34	const BN_ULONG *n0);
	35	int bn_mul_mont_t4_8(BN_ULONG rp, const BN_ULONG ap,
	36	const BN_ULONG bp, const BN_ULONG np,
	37	const BN_ULONG *n0);
	38	int bn_mul_mont_t4_16(BN_ULONG rp, const BN_ULONG ap,
	39	const BN_ULONG bp, const BN_ULONG np,
	40	const BN_ULONG *n0);
	41	int bn_mul_mont_t4_24(BN_ULONG rp, const BN_ULONG ap,
	42	const BN_ULONG bp, const BN_ULONG np,
	43	const BN_ULONG *n0);
	44	int bn_mul_mont_t4_32(BN_ULONG rp, const BN_ULONG ap,
	45	const BN_ULONG bp, const BN_ULONG np,
	46	const BN_ULONG *n0);
	47	static const bn_mul_mont_f funcs[4] = {
	48	bn_mul_mont_t4_8, bn_mul_mont_t4_16,
	49	bn_mul_mont_t4_24, bn_mul_mont_t4_32
	50	};
	51	bn_mul_mont_f worker = funcs[num / 16 - 1];
	52
	53	if ((*worker) (rp, ap, bp, np, n0))
	54	return 1;
	55	/* retry once and fall back */
	56	if ((*worker) (rp, ap, bp, np, n0))
	57	return 1;
	58	return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
	59	}
	60	if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
	61	return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
	62	else if (num >= 8 &&
	63	(OPENSSL_sparcv9cap_P[0] &
	64	(SPARCV9_PREFER_FPU \| SPARCV9_VIS1)) ==
	65	(SPARCV9_PREFER_FPU \| SPARCV9_VIS1))
	66	return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
	67	}
	68	return bn_mul_mont_int(rp, ap, bp, np, n0, num);
	69	}
	70
	71	unsigned long _sparcv9_rdtick(void);
	72	void _sparcv9_vis1_probe(void);
	73	unsigned long _sparcv9_vis1_instrument(void);
	74	void _sparcv9_vis2_probe(void);
	75	void _sparcv9_fmadd_probe(void);
	76	unsigned long _sparcv9_rdcfr(void);
	77	void _sparcv9_vis3_probe(void);
	78	unsigned long _sparcv9_random(void);
79	size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t);
80	size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t);
40b6d493	81
c06b0f3d	82	unsigned long OPENSSL_rdtsc(void)
ae5c8664 MC	83	{
ae5c8664 MC	84	if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED)
c06b0f3d	85	#if defined(__sun) && defined(__SVR4)
ae5c8664	86	return gethrtime();
c06b0f3d	87	#else
ae5c8664	88	return 0;
c06b0f3d	89	#endif
ae5c8664 MC	90	else
	91	return _sparcv9_rdtick();
	92	}
	93
	94	size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt)
	95	{
	96	if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED \| SPARCV9_BLK)) ==
	97	SPARCV9_BLK)
	98	return _sparcv9_vis1_instrument_bus(out, cnt);
	99	else
	100	return 0;
	101	}
	102
	103	size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max)
	104	{
	105	if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED \| SPARCV9_BLK)) ==
	106	SPARCV9_BLK)
	107	return _sparcv9_vis1_instrument_bus2(out, cnt, max);
	108	else
	109	return 0;
	110	}
48b7b96b	111
387ed39f	112	#if 0 && defined(__sun) && defined(__SVR4)
ae5c8664 MC	113	/*
	114	* This code path is disabled, because of incompatibility of libdevinfo.so.1
	115	* and libmalloc.so.1 (see below for details)
387ed39f	116	*/
ae5c8664 MC	117	# include <malloc.h>
	118	# include <dlfcn.h>
	119	# include <libdevinfo.h>
	120	# include <sys/systeminfo.h>
c06b0f3d	121
ae5c8664 MC	122	typedef di_node_t(di_init_t) (const char , uint_t);
	123	typedef void (*di_fini_t) (di_node_t);
	124	typedef char (di_node_name_t) (di_node_t);
	125	typedef int (*di_walk_node_t) (di_node_t, uint_t, di_node_name_t,
	126	int (*)(di_node_t, di_node_name_t));
c06b0f3d	127
ae5c8664	128	# define DLLINK(h,name) (name=(name##_t)dlsym((h),#name))
c06b0f3d AP	129
c06b0f3d AP	130	static int walk_nodename(di_node_t node, di_node_name_t di_node_name)
ae5c8664 MC	131	{
ae5c8664 MC	132	char name = (di_node_name) (node);
c06b0f3d	133
ae5c8664 MC	134	/* This is expected to catch all UltraSPARC flavors prior T1 */
	135	if (!strcmp(name, "SUNW,UltraSPARC") \|\|
	136	/* covers II,III,IV */
	137	!strncmp(name, "SUNW,UltraSPARC-I", 17)) {
	138	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_PREFER_FPU \| SPARCV9_VIS1;
c06b0f3d	139
ae5c8664 MC	140	/* %tick is privileged only on UltraSPARC-I/II, but not IIe */
	141	if (name[14] != '\0' && name[17] != '\0' && name[18] != '\0')
	142	OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
c06b0f3d	143
ae5c8664 MC	144	return DI_WALK_TERMINATE;
	145	}
	146	/* This is expected to catch remaining UltraSPARCs, such as T1 */
	147	else if (!strncmp(name, "SUNW,UltraSPARC", 15)) {
	148	OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
7a5dbeb7	149
ae5c8664 MC	150	return DI_WALK_TERMINATE;
ae5c8664 MC	151	}
c06b0f3d	152
ae5c8664 MC	153	return DI_WALK_CONTINUE;
ae5c8664 MC	154	}
c06b0f3d AP	155
c06b0f3d AP	156	void OPENSSL_cpuid_setup(void)
ae5c8664 MC	157	{
	158	void *h;
	159	char *e, si[256];
	160	static int trigger = 0;
	161
	162	if (trigger)
	163	return;
	164	trigger = 1;
	165
	166	if ((e = getenv("OPENSSL_sparcv9cap"))) {
	167	OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
	168	return;
	169	}
	170
	171	if (sysinfo(SI_MACHINE, si, sizeof(si)) > 0) {
	172	if (strcmp(si, "sun4v"))
	173	/* FPU is preferred for all CPUs, but US-T1/2 */
	174	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_PREFER_FPU;
	175	}
	176
	177	if (sysinfo(SI_ISALIST, si, sizeof(si)) > 0) {
	178	if (strstr(si, "+vis"))
	179	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS1 \| SPARCV9_BLK;
	180	if (strstr(si, "+vis2")) {
	181	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS2;
	182	OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
	183	return;
	184	}
	185	}
	186	# ifdef M_KEEP
	187	/*
	188	* Solaris libdevinfo.so.1 is effectively incomatible with
	189	* libmalloc.so.1. Specifically, if application is linked with
	190	* -lmalloc, it crashes upon startup with SIGSEGV in
	191	* free(3LIBMALLOC) called by di_fini. Prior call to
	192	* mallopt(M_KEEP,0) somehow helps... But not always...
	193	*/
	194	if ((h = dlopen(NULL, RTLD_LAZY))) {
	195	union {
	196	void *p;
	197	int (*f) (int, int);
	198	} sym;
	199	if ((sym.p = dlsym(h, "mallopt")))
	200	(*sym.f) (M_KEEP, 0);
	201	dlclose(h);
	202	}
	203	# endif
	204	if ((h = dlopen("libdevinfo.so.1", RTLD_LAZY)))
	205	do {
	206	di_init_t di_init;
	207	di_fini_t di_fini;
	208	di_walk_node_t di_walk_node;
	209	di_node_name_t di_node_name;
	210	di_node_t root_node;
	211
	212	if (!DLLINK(h, di_init))
	213	break;
	214	if (!DLLINK(h, di_fini))
	215	break;
	216	if (!DLLINK(h, di_walk_node))
	217	break;
	218	if (!DLLINK(h, di_node_name))
	219	break;
	220
221	if ((root_node = (*di_init) ("/", DINFOSUBTREE)) != DI_NODE_NIL) {
222	(*di_walk_node) (root_node, DI_WALK_SIBFIRST,
223	di_node_name, walk_nodename);
224	(*di_fini) (root_node);
225	}
226	} while (0);
227
228	if (h)
229	dlclose(h);
230	}
c06b0f3d	231
a00e414f	232	#else
c06b0f3d	233
40b6d493	234	static sigjmp_buf common_jmp;
ae5c8664 MC	235	static void common_handler(int sig)
	236	{
	237	siglongjmp(common_jmp, sig);
	238	}
40b6d493	239
15c62b0d AP	240	#if defined(__sun) && defined(__SVR4)
	241	# if defined(__GNUC__) && __GNUC__>=2
	242	extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak));
	243	# elif defined(__SUNPRO_C)
	244	#pragma weak getisax
	245	extern unsigned int getisax(unsigned int vec[], unsigned int sz);
	246	# else
	247	static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL;
	248	# endif
	249	#endif
	250
5d7324e4	251	void OPENSSL_cpuid_setup(void)
ae5c8664 MC	252	{
	253	char *e;
	254	struct sigaction common_act, ill_oact, bus_oact;
	255	sigset_t all_masked, oset;
	256	static int trigger = 0;
	257
	258	if (trigger)
	259	return;
	260	trigger = 1;
	261
	262	if ((e = getenv("OPENSSL_sparcv9cap"))) {
	263	OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
	264	if ((e = strchr(e, ':')))
	265	OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0);
	266	return;
	267	}
	268
15c62b0d AP	269	#if defined(__sun) && defined(__SVR4)
	270	if (getisax != NULL) {
	271	unsigned int vec[1];
	272
	273	if (getisax (vec,1)) {
	274	if (vec[0]&0x0020) OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS1;
	275	if (vec[0]&0x0040) OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS2;
	276	if (vec[0]&0x0080) OPENSSL_sparcv9cap_P[0] \|= SPARCV9_BLK;
	277	if (vec[0]&0x0100) OPENSSL_sparcv9cap_P[0] \|= SPARCV9_FMADD;
	278	if (vec[0]&0x0400) OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS3;
	279
	280	/* reconstruct %cfr copy */
	281	OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff;
	282	OPENSSL_sparcv9cap_P[1] \|= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1;
	283	if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] \|= CFR_CRC32C;
	284
	285	/* Some heuristics */
	286	/* all known VIS2-capable CPUs have unprivileged tick counter */
	287	if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2)
	288	OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
	289
	290	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_PREFER_FPU;
	291
	292	/* detect UltraSPARC-Tx, see sparccpud.S for details... */
	293	if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) &&
	294	_sparcv9_vis1_instrument() >= 12)
	295	OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 \| SPARCV9_PREFER_FPU);
	296	}
	297
	298	if (sizeof(size_t) == 8)
	299	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_64BIT_STACK;
	300
	301	return;
	302	}
	303	#endif
	304
ae5c8664 MC	305	/* Initial value, fits UltraSPARC-I&II... */
	306	OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU \| SPARCV9_TICK_PRIVILEGED;
	307
	308	sigfillset(&all_masked);
	309	sigdelset(&all_masked, SIGILL);
	310	sigdelset(&all_masked, SIGTRAP);
	311	# ifdef SIGEMT
	312	sigdelset(&all_masked, SIGEMT);
	313	# endif
	314	sigdelset(&all_masked, SIGFPE);
	315	sigdelset(&all_masked, SIGBUS);
	316	sigdelset(&all_masked, SIGSEGV);
	317	sigprocmask(SIG_SETMASK, &all_masked, &oset);
	318
	319	memset(&common_act, 0, sizeof(common_act));
	320	common_act.sa_handler = common_handler;
	321	common_act.sa_mask = all_masked;
	322
	323	sigaction(SIGILL, &common_act, &ill_oact);
	324	sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on
	325	* Linux] */
	326
	327	if (sigsetjmp(common_jmp, 1) == 0) {
	328	_sparcv9_rdtick();
	329	OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
	330	}
	331
	332	if (sigsetjmp(common_jmp, 1) == 0) {
	333	_sparcv9_vis1_probe();
	334	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS1 \| SPARCV9_BLK;
	335	/* detect UltraSPARC-Tx, see sparccpud.S for details... */
	336	if (_sparcv9_vis1_instrument() >= 12)
	337	OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 \| SPARCV9_PREFER_FPU);
	338	else {
	339	_sparcv9_vis2_probe();
	340	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS2;
	341	}
	342	}
	343
	344	if (sigsetjmp(common_jmp, 1) == 0) {
	345	_sparcv9_fmadd_probe();
	346	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_FMADD;
	347	}
	348
	349	/*
	350	* VIS3 flag is tested independently from VIS1, unlike VIS2 that is,
	351	* because VIS3 defines even integer instructions.
	352	*/
	353	if (sigsetjmp(common_jmp, 1) == 0) {
	354	_sparcv9_vis3_probe();
	355	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_VIS3;
	356	}
	357	# if 0 /* was planned at some point but never
	358	* implemented in hardware */
	359	if (sigsetjmp(common_jmp, 1) == 0) {
	360	(void)_sparcv9_random();
	361	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_RANDOM;
	362	}
	363	# endif
	364
	365	/*
	366	* In wait for better solution _sparcv9_rdcfr is masked by
	367	* VIS3 flag, because it goes to uninterruptable endless
	368	* loop on UltraSPARC II running Solaris. Things might be
369	* different on Linux...
370	*/
371	if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) &&
372	sigsetjmp(common_jmp, 1) == 0) {
373	OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr();
374	}
375
376	sigaction(SIGBUS, &bus_oact, NULL);
377	sigaction(SIGILL, &ill_oact, NULL);
378
379	sigprocmask(SIG_SETMASK, &oset, NULL);
380
381	if (sizeof(size_t) == 8)
382	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_64BIT_STACK;
383	# ifdef __linux
384	else {
385	int ret = syscall(340);
386
387	if (ret >= 0 && ret & 1)
388	OPENSSL_sparcv9cap_P[0] \|= SPARCV9_64BIT_STACK;
389	}
390	# endif
391	}
c06b0f3d	392
c06b0f3d	393	#endif