/*> cp1.c <*/
/* MIPS Simulator FPU (CoProcessor 1) support.
- Copyright (C) 2002 Free Software Foundation, Inc.
- Originally created by Cygnus Solutions, modified substially
- by Broadcom Corporation (SiByte). Paired-single operation support
- and MIPS-3D support contributed by Broadcom Corporation (SiByte).
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
+ Originally created by Cygnus Solutions. Extensive modifications,
+ including paired-single operation support and MIPS-3D support
+ contributed by Ed Satterthwaite and Chris Demetriou, of Broadcom
+ Corporation (SiByte).
This file is part of GDB, the GNU debugger.
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
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-You should have received a copy of the GNU General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* XXX: The following notice should be removed as soon as is practical: */
/* Floating Point Support for gdb MIPS simulators
int err = 0;
/* Treat unused register values, as fixed-point 64bit values. */
- if ((fmt == fmt_uninterpreted) || (fmt == fmt_unknown))
+ if (fmt == fmt_unknown)
{
#if 1
- /* If request to read data as "uninterpreted", then use the current
+ /* If request to read data as "unknown", then use the current
encoding: */
fmt = FPR_STATE[fpr];
#else
}
/* For values not yet accessed, set to the desired format. */
- if (FPR_STATE[fpr] == fmt_uninterpreted)
+ if (fmt < fmt_uninterpreted)
{
- FPR_STATE[fpr] = fmt;
+ if (FPR_STATE[fpr] == fmt_uninterpreted)
+ {
+ FPR_STATE[fpr] = fmt;
#ifdef DEBUG
- printf ("DBG: Register %d was fmt_uninterpreted. Now %s\n", fpr,
- fpu_format_name (fmt));
+ printf ("DBG: Register %d was fmt_uninterpreted. Now %s\n", fpr,
+ fpu_format_name (fmt));
#endif /* DEBUG */
- }
- if (fmt != FPR_STATE[fpr])
- {
- sim_io_eprintf (SD, "FPR %d (format %s) being accessed with format %s - setting to unknown (PC = 0x%s)\n",
- fpr, fpu_format_name (FPR_STATE[fpr]),
- fpu_format_name (fmt), pr_addr (cia));
- FPR_STATE[fpr] = fmt_unknown;
+ }
+ else if (fmt != FPR_STATE[fpr])
+ {
+ sim_io_eprintf (SD, "FPR %d (format %s) being accessed with format %s - setting to unknown (PC = 0x%s)\n",
+ fpr, fpu_format_name (FPR_STATE[fpr]),
+ fpu_format_name (fmt), pr_addr (cia));
+ FPR_STATE[fpr] = fmt_unknown;
+ }
}
if (FPR_STATE[fpr] == fmt_unknown)
{
switch (fmt)
{
+ case fmt_uninterpreted_32:
case fmt_single:
case fmt_word:
value = (FGR[fpr] & 0xFFFFFFFF);
break;
+ case fmt_uninterpreted_64:
case fmt_uninterpreted:
case fmt_double:
case fmt_long:
{
switch (fmt)
{
+ case fmt_uninterpreted_32:
case fmt_single:
case fmt_word:
value = (FGR[fpr] & 0xFFFFFFFF);
break;
+ case fmt_uninterpreted_64:
case fmt_uninterpreted:
case fmt_double:
case fmt_long:
else
{
FPR_STATE[fpr] = fmt_unknown;
- FPR_STATE[fpr + 1] = fmt_unknown;
+ FPR_STATE[fpr ^ 1] = fmt_unknown;
SignalException (ReservedInstruction, 0);
}
break;