Wed Feb 22 00:44:41 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

* sysdeps/mach/hurd/i386/sigreturn.c: Restore the FPU state.

	* stdlib/random.c (__srandom): Change algorithm used to populate
 	the state array.
	(randtbl): Recomputed with new algorithm.

ChangeLog

@@ -1,5 +1,13 @@
+Wed Feb 22 00:44:41 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* sysdeps/mach/hurd/i386/sigreturn.c: Restore the FPU state.
+
 Tue Feb 21 21:53:30 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
+	* stdlib/random.c (__srandom): Change algorithm used to populate
+ 	the state array.
+	(randtbl): Recomputed with new algorithm.
+
 	* sysdeps/sparc/Makefile [subdir=crypt] (crypt): Reset only if set
  	to original value of `crypt'.
 	* sysdeps/unix/sysv/sysv4/solaris2/sparc/Makefile [subdir=crypt]

stdlib/random.c

@@ -122,12 +122,14 @@ static int seps[MAX_TYPES] = { SEP_0, SEP_1, SEP_2, SEP_3, SEP_4 };
 static long int randtbl[DEG_3 + 1] =
   {
     TYPE_3,
-    -851904987, -43806228, -2029755270, 1390239686, -1912102820,
+
-    -485608943, 1969813258, -1590463333, -1944053249, 455935928, 508023712,
+    -1726662223, 379960547, 1735697613, 1040273694, 1313901226, 
-    -1714531963, 1800685987, -2015299881, 654595283, -1149023258,
+    1627687941, -179304937, -2073333483, 1780058412, -1989503057, 
-    -1470005550, -1143256056, -1325577603, -1568001885, 1275120390,
+    -615974602, 344556628, 939512070, -1249116260, 1507946756, 
-    -607508183, -205999574, -1696891592, 1492211999, -1528267240,
+    -812545463, 154635395, 1388815473, -1926676823, 525320961, 
-    -952028296, -189082757, 362343714, 1424981831, 2039449641,
+    -1009028674, 968117788, -123449607, 1284210865, 435012392, 
+    -2017506339, -911064859, -370259173, 1132637927, 1398500161, 
+    -205601318, 
   };
 
 /* FPTR and RPTR are two pointers into the state info, a front and a rear
@@ -179,11 +181,19 @@ DEFUN(__srandom, (x), unsigned int x)
     {
       register long int i;
       for (i = 1; i < rand_deg; ++i)
-	state[i] = (1103515145 * state[i - 1]) + 12345;
+	{
+	  /* This does:
+	       state[i] = (16807 * state[i - 1]) % 2147483647;
+	     but avoids overflowing 31 bits.  */
+	  long int hi = state[i - 1] / 127773;
+	  long int lo = state[i - 1] % 127773;
+	  long int test = 16807 * lo - 2836 * hi;
+	  state[i] = test + (test < 0 ? 2147483647 : 0);
+	}
       fptr = &state[rand_sep];
       rptr = &state[0];
       for (i = 0; i < 10 * rand_deg; ++i)
-	(void) __random();
+	(void) __random ();
     }
 }
 

sysdeps/generic/signame.c

@@ -1,5 +1,5 @@
 /* Convert between signal names and numbers.
-   Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1992, 1993, 1995 Free Software Foundation, Inc.
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -273,3 +273,20 @@ psignal (signal, message)
     fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
 }
 #endif
+
+#ifndef HAVE_STRSIGNAL
+/* Return the string associated with the signal number.  */
+
+char *
+strsignal (signal)
+     int signal;
+{
+  static char buf[] = "Signal 12345678901234567890";
+ 
+  if (signal > 0 || signal < NSIG)
+    return sys_siglist[signal];
+ 
+  sprintf (buf, "Signal %d", signal);
+  return buf;
+}
+#endif

sysdeps/generic/signame.h

@@ -1,5 +1,5 @@
 /* Convert between signal names and numbers.
-   Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1992, 1993, 1995 Free Software Foundation, Inc.
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -29,7 +29,7 @@ char *sig_abbrev (int number);
    signal by that name.  */
 int sig_number (const char *abbrev);
 
-/* Avoid conflicts with a system header file that might define these two.  */
+/* Avoid conflicts with a system header file that might define these three.  */
 
 #ifndef HAVE_PSIGNAL
 /* Print to standard error the name of SIGNAL, preceded by MESSAGE and
@@ -37,6 +37,11 @@ int sig_number (const char *abbrev);
 void psignal (int signal, const char *message);
 #endif
 
+#ifndef HAVE_STRSIGNAL
+/* Return the name of SIGNAL.  */
+char *strsignal (int signal);
+#endif
+
 #if !defined (HAVE_SYS_SIGLIST)
 /* Names for signals from 0 to NSIG-1.  */
 extern const char *sys_siglist[];
@@ -50,6 +55,9 @@ int sig_number ();
 #if !defined (HAVE_SYS_SIGLIST) && !defined (HAVE_PSIGNAL)
 void psignal ();
 #endif
+#ifndef HAVE_STRSIGNAL
+char *strsignal (int signal);
+#endif
 #if !defined (HAVE_SYS_SIGLIST)
 extern char *sys_siglist[];
 #endif

sysdeps/mach/hurd/i386/sigreturn.c

@@ -80,10 +80,9 @@ __sigreturn (struct sigcontext *scp)
   *reply_port = scp->sc_reply_port;
 
   if (scp->sc_fpused)
-    {
+    /* Restore the FPU state.  Mach conveniently stores the state
-  /* XXX should restore FPU state here XXX roland needs 387 manual */
+       in the format the i387 `frstor' instruction uses to restore it.  */
-  /*    abort (); */
+    asm volatile ("frstor %0" : : "m" (scp->sc_fpsave));
-    }
 
   {
     /* There are convenient instructions to pop state off the stack, so we