/*

 *  blname.c - determine the freebl library name.

 *  This Source Code Form is subject to the terms of the Mozilla Public

 *  License, v. 2.0. If a copy of the MPL was not distributed with this

 *  file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#if defined(FREEBL_LOWHASH)

static const char* default_name =

    SHLIB_PREFIX "freeblpriv" SHLIB_VERSION "." SHLIB_SUFFIX;

#else

static const char* default_name =

    SHLIB_PREFIX "freebl" SHLIB_VERSION "." SHLIB_SUFFIX;

#endif

/* getLibName() returns the name of the library to load. */

#if defined(SOLARIS) && defined(__sparc)

#include <stddef.h>

#include <strings.h>

#include <sys/systeminfo.h>

#if defined(NSS_USE_64)

const static char fpu_hybrid_shared_lib[] = "libfreebl_64fpu_3.so";

const static char int_hybrid_shared_lib[] = "libfreebl_64int_3.so";

const static char non_hybrid_shared_lib[] = "libfreebl_64fpu_3.so";

const static char int_hybrid_isa[] = "sparcv9";

const static char fpu_hybrid_isa[] = "sparcv9+vis";

#else

const static char fpu_hybrid_shared_lib[] = "libfreebl_32fpu_3.so";

const static char int_hybrid_shared_lib[] = "libfreebl_32int64_3.so";

/* This was for SPARC V8, now obsolete. */

const static char* const non_hybrid_shared_lib = NULL;

const static char int_hybrid_isa[] = "sparcv8plus";

const static char fpu_hybrid_isa[] = "sparcv8plus+vis";

#endif

static const char*

getLibName(void)

{

    char* found_int_hybrid;

    char* found_fpu_hybrid;

    long buflen;

    char buf[256];

    buflen = sysinfo(SI_ISALIST, buf, sizeof buf);

    if (buflen <= 0)

        return NULL;

    /* sysinfo output is always supposed to be NUL terminated, but ... */

    if (buflen < sizeof buf)

        buf[buflen] = '\0';

    else

        buf[(sizeof buf) - 1] = '\0';

    /* The ISA list is a space separated string of names of ISAs and

     * ISA extensions, in order of decreasing performance.

     * There are two different ISAs with which NSS's crypto code can be

     * accelerated. If both are in the list, we take the first one.

     * If one is in the list, we use it, and if neither then we use

     * the base unaccelerated code.

     */

    found_int_hybrid = strstr(buf, int_hybrid_isa);

    found_fpu_hybrid = strstr(buf, fpu_hybrid_isa);

    if (found_fpu_hybrid &&

        (!found_int_hybrid ||

         (found_int_hybrid - found_fpu_hybrid) >= 0)) {

        return fpu_hybrid_shared_lib;

    }

    if (found_int_hybrid) {

        return int_hybrid_shared_lib;

    }

    return non_hybrid_shared_lib;

}

#elif defined(HPUX) && !defined(NSS_USE_64) && !defined(__ia64)

#include <unistd.h>

/* This code tests to see if we're running on a PA2.x CPU.

** It returns true (1) if so, and false (0) otherwise.

*/

static const char*

getLibName(void)

{

    long cpu = sysconf(_SC_CPU_VERSION);

    return (cpu == CPU_PA_RISC2_0)

               ? "libfreebl_32fpu_3.sl"

               : "libfreebl_32int_3.sl";

}

#else

/* default case, for platforms/ABIs that have only one freebl shared lib. */

static const char*

getLibName(void)

{

    return default_name;

}

#endif