Initial import of abandoned HQEMU version 2.5.2HEADmaster

1 files changed, 90 insertions, 0 deletions

diff --git a/src/linux-user/arm/nwfpe/fpopcode.c b/src/linux-user/arm/nwfpe/fpopcode.c
new file mode 100644
index 0000000..0ada30c
--- /dev/null
+++ b/src/linux-user/arm/nwfpe/fpopcode.c
@@ -0,0 +1,90 @@
+/*
+    NetWinder Floating Point Emulator
+    (c) Rebel.COM, 1998,1999
+
+    Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
+
+    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 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "fpa11.h"
+#include "fpu/softfloat.h"
+#include "fpopcode.h"
+#include "fpsr.h"
+//#include "fpmodule.h"
+//#include "fpmodule.inl"
+
+const floatx80 floatx80Constant[] = {
+  { 0x0000000000000000ULL, 0x0000},	/* extended 0.0 */
+  { 0x8000000000000000ULL, 0x3fff},	/* extended 1.0 */
+  { 0x8000000000000000ULL, 0x4000},	/* extended 2.0 */
+  { 0xc000000000000000ULL, 0x4000},	/* extended 3.0 */
+  { 0x8000000000000000ULL, 0x4001},	/* extended 4.0 */
+  { 0xa000000000000000ULL, 0x4001},	/* extended 5.0 */
+  { 0x8000000000000000ULL, 0x3ffe},	/* extended 0.5 */
+  { 0xa000000000000000ULL, 0x4002}	/* extended 10.0 */
+};
+
+const float64 float64Constant[] = {
+  const_float64(0x0000000000000000ULL),		/* double 0.0 */
+  const_float64(0x3ff0000000000000ULL),		/* double 1.0 */
+  const_float64(0x4000000000000000ULL),		/* double 2.0 */
+  const_float64(0x4008000000000000ULL),		/* double 3.0 */
+  const_float64(0x4010000000000000ULL),		/* double 4.0 */
+  const_float64(0x4014000000000000ULL),		/* double 5.0 */
+  const_float64(0x3fe0000000000000ULL),		/* double 0.5 */
+  const_float64(0x4024000000000000ULL)			/* double 10.0 */
+};
+
+const float32 float32Constant[] = {
+  const_float32(0x00000000),				/* single 0.0 */
+  const_float32(0x3f800000),				/* single 1.0 */
+  const_float32(0x40000000),				/* single 2.0 */
+  const_float32(0x40400000),				/* single 3.0 */
+  const_float32(0x40800000),				/* single 4.0 */
+  const_float32(0x40a00000),				/* single 5.0 */
+  const_float32(0x3f000000),				/* single 0.5 */
+  const_float32(0x41200000)				/* single 10.0 */
+};
+
+unsigned int getRegisterCount(const unsigned int opcode)
+{
+  unsigned int nRc;
+
+  switch (opcode & MASK_REGISTER_COUNT)
+  {
+    case 0x00000000: nRc = 4; break;
+    case 0x00008000: nRc = 1; break;
+    case 0x00400000: nRc = 2; break;
+    case 0x00408000: nRc = 3; break;
+    default: nRc = 0;
+  }
+
+  return(nRc);
+}
+
+unsigned int getDestinationSize(const unsigned int opcode)
+{
+  unsigned int nRc;
+
+  switch (opcode & MASK_DESTINATION_SIZE)
+  {
+    case 0x00000000: nRc = typeSingle; break;
+    case 0x00000080: nRc = typeDouble; break;
+    case 0x00080000: nRc = typeExtended; break;
+    default: nRc = typeNone;
+  }
+
+  return(nRc);
+}