entered into RCS

From-SVN: r889

gcc/config/we32k/we32k.c

+/* Subroutines for insn-output.c for AT&T we32000 Family.
+   Contributed by John Wehle (john@feith1.uucp)
+   Copyright (C) 1991-1992 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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 1, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+#include <stdio.h>
+#include "config.h"
+#include "rtl.h"
+#include "real.h"
+
+
+void output_move_double(operands)
+rtx *operands;
+  {
+  rtx lsw_operands[2];
+  rtx lsw_sreg = NULL;
+  rtx msw_dreg = NULL;
+
+  if (GET_CODE (operands[0]) == REG) {
+    lsw_operands[0] = gen_rtx(REG, SImode, REGNO (operands[0]) + 1);
+    msw_dreg = operands[0];
+    }
+  else
+    if (GET_CODE (operands[0]) == MEM && offsettable_memref_p (operands[0]))
+      lsw_operands[0] = adj_offsettable_operand(operands[0], 4);
+    else
+      abort();
+
+  if (GET_CODE (operands[1]) == REG) {
+    lsw_operands[1] = gen_rtx(REG, SImode, REGNO (operands[1]) + 1);
+    lsw_sreg = lsw_operands[1];
+    }
+  else
+    if (GET_CODE (operands[1]) == MEM && offsettable_memref_p (operands[1])) {
+      lsw_operands[1] = adj_offsettable_operand(operands[1], 4);
+      lsw_sreg = operands[1];
+      for ( ; ; ) {
+        if (REG_P (lsw_sreg))
+          break;
+        if (CONSTANT_ADDRESS_P (lsw_sreg)) {
+          lsw_sreg = NULL;
+          break;
+          }
+        if (GET_CODE (lsw_sreg) == MEM) {
+          lsw_sreg = XEXP (lsw_sreg, 0);
+          continue;
+          }
+        if (GET_CODE (lsw_sreg) == PLUS)
+          if (CONSTANT_ADDRESS_P (XEXP (lsw_sreg, 1))) {
+            lsw_sreg = XEXP (lsw_sreg, 0);
+            continue;
+            }
+          else
+            if (CONSTANT_ADDRESS_P (XEXP (lsw_sreg, 0))) {
+              lsw_sreg = XEXP (lsw_sreg, 1);
+              continue;
+              }
+        abort();
+        }
+      }
+    else
+      if (GET_CODE (operands[1]) == CONST_DOUBLE)
+        {
+        lsw_operands[1] = gen_rtx(CONST_INT, SImode,
+                                  CONST_DOUBLE_HIGH(operands[1]));
+        operands[1] = gen_rtx(CONST_INT, SImode,
+                              CONST_DOUBLE_LOW(operands[1]));
+        }
+      else
+        if (GET_CODE (operands[1]) == CONST_INT)
+          {
+          lsw_operands[1] = operands[1];
+          operands[1] = const0_rtx;
+          }
+        else
+          abort();
+
+  if ( !msw_dreg || !lsw_sreg || REGNO (msw_dreg) != REGNO (lsw_sreg)) {
+    output_asm_insn("movw %1, %0", operands);
+    output_asm_insn("movw %1, %0", lsw_operands);
+    }
+  else {
+    output_asm_insn("movw %1, %0", lsw_operands);
+    output_asm_insn("movw %1, %0", operands);
+    }
+  }
+
+void output_push_double(operands)
+rtx *operands;
+  {
+  rtx lsw_operands[1];
+
+  if (GET_CODE (operands[0]) == REG)
+    lsw_operands[0] = gen_rtx(REG, SImode, REGNO (operands[0]) + 1);
+  else
+    if (GET_CODE (operands[0]) == MEM && offsettable_memref_p (operands[0]))
+      lsw_operands[0] = adj_offsettable_operand(operands[0], 4);
+    else
+      if (GET_CODE (operands[0]) == CONST_DOUBLE)
+        {
+        lsw_operands[0] = gen_rtx(CONST_INT, SImode,
+                                  CONST_DOUBLE_HIGH(operands[0]));
+        operands[0] = gen_rtx(CONST_INT, SImode,
+                              CONST_DOUBLE_LOW(operands[0]));
+        }
+      else
+        if (GET_CODE (operands[0]) == CONST_INT)
+          {
+          lsw_operands[0] = operands[0];
+          operands[0] = const0_rtx;
+          }
+        else
+          abort();
+
+  output_asm_insn("pushw %0", operands);
+  output_asm_insn("pushw %0", lsw_operands);
+  }