Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 288 insertions, 0 deletions

diff --git a/arch/arm26/nwfpe/double_cpdo.c b/arch/arm26/nwfpe/double_cpdo.c
new file mode 100644
index 000000000000..7f4fef0216c7
--- /dev/null
+++ b/arch/arm26/nwfpe/double_cpdo.c
@@ -0,0 +1,288 @@
+/*
+    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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "fpa11.h"
+#include "softfloat.h"
+#include "fpopcode.h"
+
+float64 float64_exp(float64 Fm);
+float64 float64_ln(float64 Fm);
+float64 float64_sin(float64 rFm);
+float64 float64_cos(float64 rFm);
+float64 float64_arcsin(float64 rFm);
+float64 float64_arctan(float64 rFm);
+float64 float64_log(float64 rFm);
+float64 float64_tan(float64 rFm);
+float64 float64_arccos(float64 rFm);
+float64 float64_pow(float64 rFn,float64 rFm);
+float64 float64_pol(float64 rFn,float64 rFm);
+
+unsigned int DoubleCPDO(const unsigned int opcode)
+{
+   FPA11 *fpa11 = GET_FPA11();
+   float64 rFm, rFn = 0; //FIXME - should be zero?
+   unsigned int Fd, Fm, Fn, nRc = 1;
+
+   //printk("DoubleCPDO(0x%08x)\n",opcode);
+   
+   Fm = getFm(opcode);
+   if (CONSTANT_FM(opcode))
+   {
+     rFm = getDoubleConstant(Fm);
+   }
+   else
+   {  
+     switch (fpa11->fType[Fm])
+     {
+        case typeSingle:
+          rFm = float32_to_float64(fpa11->fpreg[Fm].fSingle);
+        break;
+
+        case typeDouble:
+          rFm = fpa11->fpreg[Fm].fDouble;
+          break;
+
+        case typeExtended:
+            // !! patb
+	    //printk("not implemented! why not?\n");
+            //!! ScottB
+            // should never get here, if extended involved
+            // then other operand should be promoted then
+            // ExtendedCPDO called.
+            break;
+
+        default: return 0;
+     }
+   }
+
+   if (!MONADIC_INSTRUCTION(opcode))
+   {
+      Fn = getFn(opcode);
+      switch (fpa11->fType[Fn])
+      {
+        case typeSingle:
+          rFn = float32_to_float64(fpa11->fpreg[Fn].fSingle);
+        break;
+
+        case typeDouble:
+          rFn = fpa11->fpreg[Fn].fDouble;
+        break;
+        
+        default: return 0;
+      }
+   }
+
+   Fd = getFd(opcode);
+   /* !! this switch isn't optimized; better (opcode & MASK_ARITHMETIC_OPCODE)>>24, sort of */
+   switch (opcode & MASK_ARITHMETIC_OPCODE)
+   {
+      /* dyadic opcodes */
+      case ADF_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_add(rFn,rFm);
+      break;
+
+      case MUF_CODE:
+      case FML_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_mul(rFn,rFm);
+      break;
+
+      case SUF_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_sub(rFn,rFm);
+      break;
+
+      case RSF_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_sub(rFm,rFn);
+      break;
+
+      case DVF_CODE:
+      case FDV_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_div(rFn,rFm);
+      break;
+
+      case RDF_CODE:
+      case FRD_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_div(rFm,rFn);
+      break;
+
+#if 0
+      case POW_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_pow(rFn,rFm);
+      break;
+
+      case RPW_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_pow(rFm,rFn);
+      break;
+#endif
+
+      case RMF_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_rem(rFn,rFm);
+      break;
+
+#if 0
+      case POL_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_pol(rFn,rFm);
+      break;
+#endif
+
+      /* monadic opcodes */
+      case MVF_CODE:
+         fpa11->fpreg[Fd].fDouble = rFm;
+      break;
+
+      case MNF_CODE:
+      {
+         unsigned int *p = (unsigned int*)&rFm;
+         p[1] ^= 0x80000000;
+         fpa11->fpreg[Fd].fDouble = rFm;
+      }
+      break;
+
+      case ABS_CODE:
+      {
+         unsigned int *p = (unsigned int*)&rFm;
+         p[1] &= 0x7fffffff;
+         fpa11->fpreg[Fd].fDouble = rFm;
+      }
+      break;
+
+      case RND_CODE:
+      case URD_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_round_to_int(rFm);
+      break;
+
+      case SQT_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_sqrt(rFm);
+      break;
+
+#if 0
+      case LOG_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_log(rFm);
+      break;
+
+      case LGN_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_ln(rFm);
+      break;
+
+      case EXP_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_exp(rFm);
+      break;
+
+      case SIN_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_sin(rFm);
+      break;
+
+      case COS_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_cos(rFm);
+      break;
+
+      case TAN_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_tan(rFm);
+      break;
+
+      case ASN_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_arcsin(rFm);
+      break;
+
+      case ACS_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_arccos(rFm);
+      break;
+
+      case ATN_CODE:
+         fpa11->fpreg[Fd].fDouble = float64_arctan(rFm);
+      break;
+#endif
+
+      case NRM_CODE:
+      break;
+      
+      default:
+      {
+        nRc = 0;
+      }
+   }
+
+   if (0 != nRc) fpa11->fType[Fd] = typeDouble;
+   return nRc;
+}
+
+#if 0
+float64 float64_exp(float64 rFm)
+{
+  return rFm;
+//series
+}
+
+float64 float64_ln(float64 rFm)
+{
+  return rFm;
+//series
+}
+
+float64 float64_sin(float64 rFm)
+{
+  return rFm;
+//series
+}
+
+float64 float64_cos(float64 rFm)
+{
+   return rFm;
+   //series
+}
+
+#if 0
+float64 float64_arcsin(float64 rFm)
+{
+//series
+}
+
+float64 float64_arctan(float64 rFm)
+{
+  //series
+}
+#endif
+
+float64 float64_log(float64 rFm)
+{
+  return float64_div(float64_ln(rFm),getDoubleConstant(7));
+}
+
+float64 float64_tan(float64 rFm)
+{
+  return float64_div(float64_sin(rFm),float64_cos(rFm));
+}
+
+float64 float64_arccos(float64 rFm)
+{
+return rFm;
+   //return float64_sub(halfPi,float64_arcsin(rFm));
+}
+
+float64 float64_pow(float64 rFn,float64 rFm)
+{
+  return float64_exp(float64_mul(rFm,float64_ln(rFn))); 
+}
+
+float64 float64_pol(float64 rFn,float64 rFm)
+{
+  return float64_arctan(float64_div(rFn,rFm)); 
+}
+#endif