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Thu Mar 28 13:50:51 1996 James G. Smith <jsmith@cygnus.co.uk>

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* interp.c (Convert): Provide round-to-nearest and round-to-zero
 	support for Sun hosts.
	* Makefile.in (gencode): Ensure the host compiler and libraries
 	used for cross-hosted build.

Allow a DOS hosted version of the simulator to be built. NOTE: The FP
is still not complete, since round-to-nearest and round-to-zero have
not been implemented generically.
This commit is contained in:
Jackie Smith Cashion 1996-03-28 14:08:51 +00:00
parent 1d8eda7ab4
commit d0757082eb
2 changed files with 26 additions and 1 deletions
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7
sim/mips/ChangeLog
View file

@ -1,3 +1,10 @@
Thu Mar 28 13:50:51 1996 James G. Smith <jsmith@cygnus.co.uk>
* interp.c (Convert): Provide round-to-nearest and round-to-zero
support for Sun hosts.
* Makefile.in (gencode): Ensure the host compiler and libraries
used for cross-hosted build.
Wed Mar 27 14:42:12 1996 James G. Smith <jsmith@cygnus.co.uk>
* interp.c, gencode.c: Some more (TODO) tidying.

20
sim/mips/interp.c
View file

@ -494,6 +494,8 @@ sim_open (args)
s[1] = 0x00000000;
if (((float)4.01102924346923828125 != *(float *)s) || ((double)523.2939453125 != *(double *)s)) {
fprintf(stderr,"The host executing the simulator does not seem to have IEEE 754-1985 std FP\n");
fprintf(stderr,"*(float *)s = %f (4.01102924346923828125)\n",*(float *)s);
fprintf(stderr,"*(double *)s = %f (523.2939453125)\n",*(double *)s);
exit(1);
}
}
@ -814,7 +816,7 @@ sim_close (quitting)
#endif /* TRACE */
if (membank)
cfree(membank);
free(membank); /* cfree not available on all hosts */
membank = NULL;
return;
@ -2912,13 +2914,21 @@ Convert(rm,op,from,to)
/* Round result to nearest representable value. When two
representable values are equally near, round to the value
that has a least significant bit of zero (i.e. is even). */
#if defined(sun)
tmp = (float)anint((double)tmp);
#else
/* TODO: Provide round-to-nearest */
#endif
break;
case FP_RM_TOZERO:
/* Round result to the value closest to, and not greater in
magnitude than, the result. */
#if defined(sun)
tmp = (float)aint((double)tmp);
#else
/* TODO: Provide round-to-zero */
#endif
break;
case FP_RM_TOPINF:
@ -2960,11 +2970,19 @@ Convert(rm,op,from,to)
switch (rm) {
case FP_RM_NEAREST:
#if defined(sun)
tmp = anint(*(double *)&tmp);
#else
/* TODO: Provide round-to-nearest */
#endif
break;
case FP_RM_TOZERO:
#if defined(sun)
tmp = aint(*(double *)&tmp);
#else
/* TODO: Provide round-to-zero */
#endif
break;
case FP_RM_TOPINF: