Support debug system bus access.

[riscv-isa-sim.git] / softfloat / s_roundPackToUI32.c

diff --git a/softfloat/s_roundPackToUI32.c b/softfloat/s_roundPackToUI32.c
old mode 100755 (executable)
new mode 100644 (file)
index ab44ec7..f0021fe
--- a/softfloat/s_roundPackToUI32.c
+++ b/softfloat/s_roundPackToUI32.c
@@ -1,44 +1,80 @@
 
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3a+, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of
+California.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions, and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions, and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+ 3. Neither the name of the University nor the names of its contributors may
+    be used to endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
+DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+=============================================================================*/
+
 #include <stdbool.h>
 #include <stdint.h>
 #include "platform.h"
 #include "internals.h"
+#include "specialize.h"
 #include "softfloat.h"
 
 uint_fast32_t
  softfloat_roundPackToUI32(
-     bool sign, uint_fast64_t sig, int_fast8_t roundingMode, bool exact )
+     bool sign, uint_fast64_t sig, uint_fast8_t roundingMode, bool exact )
 {
-    bool roundNearestEven;
-    int roundIncrement, roundBits;
+    bool roundNearEven;
+    uint_fast8_t roundIncrement, roundBits;
     uint_fast32_t z;
 
-    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    roundNearEven = (roundingMode == softfloat_round_near_even);
     roundIncrement = 0x40;
-    if (
-           ! roundNearestEven
-        && ( roundingMode != softfloat_round_nearest_maxMag )
-    ) {
+    if ( ! roundNearEven && (roundingMode != softfloat_round_near_maxMag) ) {
         roundIncrement =
-               ( roundingMode == softfloat_round_minMag )
-            || ( roundingMode
-                     == ( sign ? softfloat_round_max : softfloat_round_min ) )
-                ? 0
-                : 0x7F;
+            (roundingMode
+                 == (sign ? softfloat_round_min : softfloat_round_max))
+                ? 0x7F
+                : 0;
     }
     roundBits = sig & 0x7F;
     sig += roundIncrement;
     if ( sig & UINT64_C( 0xFFFFFF8000000000 ) ) goto invalid;
     z = sig>>7;
-    z &= ~ ( ! ( roundBits ^ 0x40 ) & roundNearestEven );
+    z &= ~(uint_fast32_t) (! (roundBits ^ 0x40) & roundNearEven);
     if ( sign && z ) goto invalid;
     if ( exact && roundBits ) {
         softfloat_exceptionFlags |= softfloat_flag_inexact;
     }
     return z;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
  invalid:
     softfloat_raiseFlags( softfloat_flag_invalid );
-    return 0xFFFFFFFF;
+    return sign ? ui32_fromNegOverflow : ui32_fromPosOverflow;
 
 }