1 files changed, 237 insertions, 0 deletions

diff --git a/src/lib/libcrypto/sparcv9cap.c b/src/lib/libcrypto/sparcv9cap.c
new file mode 100644
index 0000000000..43b3ac6f81
--- /dev/null
+++ b/src/lib/libcrypto/sparcv9cap.c
@@ -0,0 +1,237 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <sys/time.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 */
+
+static int OPENSSL_sparcv9cap_P=SPARCV9_TICK_PRIVILEGED;
+
+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_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);
+        }
+
+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 OPENSSL_rdtsc(void)
+        {
+        if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED)
+#if defined(__sun) && defined(__SVR4)
+                return gethrtime();
+#else
+                return 0;
+#endif
+        else
+                return _sparcv9_rdtick();
+        }
+
+#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") ||
+            !strncmp(name,"SUNW,UltraSPARC-I",17))  /* covers II,III,IV */
+                {
+                OPENSSL_sparcv9cap_P |= 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;
+
+                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;
+
+                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=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 |= SPARCV9_PREFER_FPU;
+                }
+
+        if (sysinfo(SI_ISALIST,si,sizeof(si))>0)
+                {
+                if (strstr(si,"+vis"))
+                        OPENSSL_sparcv9cap_P |= SPARCV9_VIS1;
+                if (strstr(si,"+vis2"))
+                        {
+                        OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
+                        OPENSSL_sparcv9cap_P &= ~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); }
+
+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=strtoul(e,NULL,0);
+                return;
+                }
+
+        /* Initial value, fits UltraSPARC-I&II... */
+        OPENSSL_sparcv9cap_P = 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 &= ~SPARCV9_TICK_PRIVILEGED;
+                }
+
+        if (sigsetjmp(common_jmp,1) == 0)
+                {
+                _sparcv9_vis1_probe();
+                OPENSSL_sparcv9cap_P |= SPARCV9_VIS1;
+                /* detect UltraSPARC-Tx, see sparccpud.S for details... */
+                if (_sparcv9_vis1_instrument() >= 12)
+                        OPENSSL_sparcv9cap_P &= ~(SPARCV9_VIS1|SPARCV9_PREFER_FPU);
+                else
+                        {
+                        _sparcv9_vis2_probe();
+                        OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
+                        }
+                }
+
+        if (sigsetjmp(common_jmp,1) == 0)
+                {
+                _sparcv9_fmadd_probe();
+                OPENSSL_sparcv9cap_P |= SPARCV9_FMADD;
+                }
+
+        sigaction(SIGBUS,&bus_oact,NULL);
+        sigaction(SIGILL,&ill_oact,NULL);
+
+        sigprocmask(SIG_SETMASK,&oset,NULL);
+        }
+
+#endif