X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fsparcv9cap.c;h=7ee6769120b21702dc248e9083326459a3db46e1;hp=b961cbe3fa114af4050226236f3ec2e10378b930;hb=e14f14d36e429762b277bd584329d815760b95d2;hpb=62f29eb1cf7957b4eb9ad60eccfe1e11bbac94ce

diff --git a/crypto/sparcv9cap.c b/crypto/sparcv9cap.c
index b961cbe3fa..7ee6769120 100644
--- a/crypto/sparcv9cap.c
+++ b/crypto/sparcv9cap.c
@@ -4,28 +4,51 @@
 #include <setjmp.h>
 #include <signal.h>
 #include <sys/time.h>
+#include <unistd.h>
 #include <openssl/bn.h>
 
-#define SPARCV9_TICK_PRIVILEGED	(1<<0)
-#define SPARCV9_PREFER_FPU	(1<<1)
-#define SPARCV9_VIS1		(1<<2)
-#define SPARCV9_VIS2		(1<<3)	/* reserved */
-#define SPARCV9_FMADD		(1<<4)	/* reserved for SPARC64 V */
-#define SPARCV9_BLK		(1<<5)	/* VIS1 block copy */
+#include "sparc_arch.h"
 
-static int OPENSSL_sparcv9cap_P=SPARCV9_TICK_PRIVILEGED;
+#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>=8 && !(num&1) &&
-	    (OPENSSL_sparcv9cap_P&(SPARCV9_PREFER_FPU|SPARCV9_VIS1)) ==
-		(SPARCV9_PREFER_FPU|SPARCV9_VIS1))
-		return bn_mul_mont_fpu(rp,ap,bp,np,n0,num);
-	else
-		return bn_mul_mont_int(rp,ap,bp,np,n0,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);
@@ -33,12 +56,15 @@ 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		_sparcv8_vis1_instrument_bus2(unsigned int *,size_t,size_t);
+size_t		_sparcv9_vis1_instrument_bus2(unsigned int *,size_t,size_t);
 
 unsigned long OPENSSL_rdtsc(void)
 	{
-	if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED)
+	if (OPENSSL_sparcv9cap_P[0]&SPARCV9_TICK_PRIVILEGED)
 #if defined(__sun) && defined(__SVR4)
 		return gethrtime();
 #else
@@ -50,7 +76,7 @@ unsigned long OPENSSL_rdtsc(void)
 
 size_t OPENSSL_instrument_bus(unsigned int *out,size_t cnt)
 	{
-	if (OPENSSL_sparcv9cap_P&(SPARCV9_TICK_PRIVILEGED|SPARCV9_BLK) ==
+	if ((OPENSSL_sparcv9cap_P[0]&(SPARCV9_TICK_PRIVILEGED|SPARCV9_BLK)) ==
 			SPARCV9_BLK)
 		return _sparcv9_vis1_instrument_bus(out,cnt);
 	else
@@ -59,7 +85,7 @@ size_t OPENSSL_instrument_bus(unsigned int *out,size_t cnt)
 
 size_t OPENSSL_instrument_bus2(unsigned int *out,size_t cnt,size_t max)
 	{
-	if (OPENSSL_sparcv9cap_P&(SPARCV9_TICK_PRIVILEGED|SPARCV9_BLK) ==
+	if ((OPENSSL_sparcv9cap_P[0]&(SPARCV9_TICK_PRIVILEGED|SPARCV9_BLK)) ==
 			SPARCV9_BLK)
 		return _sparcv9_vis1_instrument_bus2(out,cnt,max);
 	else
@@ -90,18 +116,18 @@ static int walk_nodename(di_node_t node, di_node_name_t di_node_name)
 	if (!strcmp (name,"SUNW,UltraSPARC") ||
 	    !strncmp(name,"SUNW,UltraSPARC-I",17))  /* covers II,III,IV */
 		{
-		OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1;
+		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 &= ~SPARCV9_TICK_PRIVILEGED;
+			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 &= ~SPARCV9_TICK_PRIVILEGED;
+		OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
 
 		return DI_WALK_TERMINATE;
 		}
@@ -120,7 +146,7 @@ void OPENSSL_cpuid_setup(void)
 
 	if ((e=getenv("OPENSSL_sparcv9cap")))
 		{
-		OPENSSL_sparcv9cap_P=strtoul(e,NULL,0);
+		OPENSSL_sparcv9cap_P[0]=strtoul(e,NULL,0);
 		return;
 		}
 
@@ -128,17 +154,17 @@ void OPENSSL_cpuid_setup(void)
 		{
 		if (strcmp(si,"sun4v"))
 			/* FPU is preferred for all CPUs, but US-T1/2 */
-			OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU;
+			OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU;
 		}
 
 	if (sysinfo(SI_ISALIST,si,sizeof(si))>0)
 		{
 		if (strstr(si,"+vis"))
-			OPENSSL_sparcv9cap_P |= SPARCV9_VIS1|SPARCV9_BLK;
+			OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1|SPARCV9_BLK;
 		if (strstr(si,"+vis2"))
 			{
-			OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
-			OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
+			OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
+			OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
 			return;
 			}
 		}
@@ -198,12 +224,14 @@ void OPENSSL_cpuid_setup(void)
  
 	if ((e=getenv("OPENSSL_sparcv9cap")))
 		{
-		OPENSSL_sparcv9cap_P=strtoul(e,NULL,0);
+		OPENSSL_sparcv9cap_P[0]=strtoul(e,NULL,0);
+		if ((e=strchr(e,':')))
+			OPENSSL_sparcv9cap_P[1]=strtoul(e+1,NULL,0);
 		return;
 		}
 
 	/* Initial value, fits UltraSPARC-I&II... */
-	OPENSSL_sparcv9cap_P = SPARCV9_PREFER_FPU|SPARCV9_TICK_PRIVILEGED;
+	OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU|SPARCV9_TICK_PRIVILEGED;
 
 	sigfillset(&all_masked);
 	sigdelset(&all_masked,SIGILL);
@@ -226,33 +254,75 @@ void OPENSSL_cpuid_setup(void)
 	if (sigsetjmp(common_jmp,1) == 0)
 		{
 		_sparcv9_rdtick();
-		OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
+		OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
 		}
 
 	if (sigsetjmp(common_jmp,1) == 0)
 		{
 		_sparcv9_vis1_probe();
-		OPENSSL_sparcv9cap_P |= SPARCV9_VIS1|SPARCV9_BLK;
+		OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1|SPARCV9_BLK;
 		/* detect UltraSPARC-Tx, see sparccpud.S for details... */
 		if (_sparcv9_vis1_instrument() >= 12)
-			OPENSSL_sparcv9cap_P &= ~(SPARCV9_VIS1|SPARCV9_PREFER_FPU);
+			OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1|SPARCV9_PREFER_FPU);
 		else
 			{
 			_sparcv9_vis2_probe();
-			OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
+			OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
 			}
 		}
 
 	if (sigsetjmp(common_jmp,1) == 0)
 		{
 		_sparcv9_fmadd_probe();
-		OPENSSL_sparcv9cap_P |= SPARCV9_FMADD;
+		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