sparcv9cap.c: disengange Solaris-specific CPU detection routine in favour

[openssl.git] / crypto / sparcv9cap.c

diff --git a/crypto/sparcv9cap.c b/crypto/sparcv9cap.c
index bb0c8e73a912488ab8ff1dfe9d85730052e7fb9f..ed195ab4028ce61ca3ffdfd22840fb1d86e1f271 100644 (file)
--- a/crypto/sparcv9cap.c
+++ b/crypto/sparcv9cap.c
@@ -27,7 +27,10 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U
        }
 
 unsigned long  _sparcv9_rdtick(void);
-unsigned long  _sparcv9_vis1_probe(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)
        {
@@ -41,8 +44,11 @@ unsigned long OPENSSL_rdtsc(void)
                return _sparcv9_rdtick();
        }
 
-#if defined(__sun) && defined(__SVR4)
-
+#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>
@@ -114,7 +120,21 @@ void OPENSSL_cpuid_setup(void)
                        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;
@@ -150,6 +170,10 @@ void OPENSSL_cpuid_setup(void)
        struct sigaction        common_act,ill_oact,bus_oact;
        sigset_t                all_masked,oset;
        int                     sig;
+       static int trigger=0;
+
+       if (trigger) return;
+       trigger=1;
  
        if ((e=getenv("OPENSSL_sparcv9cap")))
                {
@@ -157,8 +181,8 @@ void OPENSSL_cpuid_setup(void)
                return;
                }
 
-       /* For now we assume that the rest supports UltraSPARC-I* only */
-       OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1;
+       /* Initial value, fits UltraSPARC-I&II... */
+       OPENSSL_sparcv9cap_P = SPARCV9_PREFER_FPU|SPARCV9_TICK_PRIVILEGED;
 
        sigfillset(&all_masked);
        sigdelset(&all_masked,SIGILL);
@@ -176,34 +200,34 @@ void OPENSSL_cpuid_setup(void)
        common_act.sa_mask    = all_masked;
 
        sigaction(SIGILL,&common_act,&ill_oact);
-       if (sigsetjmp(common_jmp,0) == 0)
+       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;
                }
-       else
-               {
-               /* This happens on US-I&II, which have working VIS1
-                * and fast FPU... In other words we are done... */
-               OPENSSL_sparcv9cap_P |= SPARCV9_TICK_PRIVILEGED;
-               sigaction(SIGILL,&ill_oact,NULL);
-               sigprocmask(SIG_SETMASK,&oset,NULL);
-               return;
-               }
-       sigaction(SIGILL,&ill_oact,NULL);
 
-       sigaction(SIGILL,&common_act,&ill_oact);
-       sigaction(SIGBUS,&common_act,&bus_oact);/* T1 fails 16-bit ldda */
-       if ((sig=sigsetjmp(common_jmp,0)) == 0)
+       if (sigsetjmp(common_jmp,1) == 0)
                {
-               /* see sparccpud.S for details... */
-               if (_sparcv9_vis1_probe() >= 12)
-                       OPENSSL_sparcv9cap_P &= ~SPARCV9_VIS1;
+               _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;
+                       }
                }
-       else
+
+       if (sigsetjmp(common_jmp,1) == 0)
                {
-               OPENSSL_sparcv9cap_P &= ~SPARCV9_VIS1;
+               _sparcv9_fmadd_probe();
+               OPENSSL_sparcv9cap_P |= SPARCV9_FMADD;
                }
+
        sigaction(SIGBUS,&bus_oact,NULL);
        sigaction(SIGILL,&ill_oact,NULL);