[Qemu-devel] [PATCH 2/6] softfloat: Revert remaining portions of commits 75d62a5856 and 3430b0be36f

[Peter Maydell]

Revert the remaining portions of commits 75d62a5856 and 3430b0be36f
which are under a SoftFloat-2b license, ie the functions
uint64_to_float32() and uint64_to_float64(). (The float64_to_uint64()
and float64_to_uint64_round_to_zero() functions were completely
rewritten in commits fb3ea83aa and 0a87a3107d so can stay.)

Signed-off-by: Peter Maydell <address@hidden>
---
 fpu/softfloat.c         | 35 -----------------------------------
 include/fpu/softfloat.h |  2 --
 2 files changed, 37 deletions(-)

diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 6041dbd..f79669f 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -1302,27 +1302,6 @@ float32 int64_to_float32(int64_t a STATUS_PARAM)
 
 }
 
-float32 uint64_to_float32(uint64_t a STATUS_PARAM)
-{
-    int8 shiftCount;
-
-    if ( a == 0 ) return float32_zero;
-    shiftCount = countLeadingZeros64( a ) - 40;
-    if ( 0 <= shiftCount ) {
-        return packFloat32(0, 0x95 - shiftCount, a<<shiftCount);
-    }
-    else {
-        shiftCount += 7;
-        if ( shiftCount < 0 ) {
-            shift64RightJamming( a, - shiftCount, &a );
-        }
-        else {
-            a <<= shiftCount;
-        }
-        return roundAndPackFloat32(0, 0x9C - shiftCount, a STATUS_VAR);
-    }
-}
-
 /*----------------------------------------------------------------------------
 | Returns the result of converting the 64-bit two's complement integer `a'
 | to the double-precision floating-point format.  The conversion is performed
@@ -1342,20 +1321,6 @@ float64 int64_to_float64(int64_t a STATUS_PARAM)
 
 }
 
-float64 uint64_to_float64(uint64_t a STATUS_PARAM)
-{
-    int exp =  0x43C;
-
-    if (a == 0) {
-        return float64_zero;
-    }
-    if ((int64_t)a < 0) {
-        shift64RightJamming(a, 1, &a);
-        exp += 1;
-    }
-    return normalizeRoundAndPackFloat64(0, exp, a STATUS_VAR);
-}
-
 /*----------------------------------------------------------------------------
 | Returns the result of converting the 64-bit two's complement integer `a'
 | to the extended double-precision floating-point format.  The conversion
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 4da5778..772f9a1 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -273,9 +273,7 @@ float64 uint32_to_float64(uint32_t STATUS_PARAM);
 floatx80 int32_to_floatx80(int32_t STATUS_PARAM);
 float128 int32_to_float128(int32_t STATUS_PARAM);
 float32 int64_to_float32(int64_t STATUS_PARAM);
-float32 uint64_to_float32(uint64_t STATUS_PARAM);
 float64 int64_to_float64(int64_t STATUS_PARAM);
-float64 uint64_to_float64(uint64_t STATUS_PARAM);
 floatx80 int64_to_floatx80(int64_t STATUS_PARAM);
 float128 int64_to_float128(int64_t STATUS_PARAM);
 float128 uint64_to_float128(uint64_t STATUS_PARAM);
-- 
1.9.1