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godot/thirdparty/openssl/crypto/sparcv9cap.c
Rémi Verschelde 422196759f openssl: Move to a module and split thirdparty lib 
Same rationale as the previous commits.
2016-10-15 11:50:41 +02:00

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#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
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