qemu/0240-fpu-softfloat.c-Return-correctly-signed-values-from-.patch
2012-10-28 14:05:07 -04:00

45 lines
1.5 KiB
Diff

From 41e7a1710ee9787900713a769b7d07677857260a Mon Sep 17 00:00:00 2001
From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 28 Sep 2012 16:17:03 +0100
Subject: [PATCH] fpu/softfloat.c: Return correctly signed values from
uint64_to_float32
The uint64_to_float32() conversion function was incorrectly always
returning numbers with the sign bit set (ie negative numbers). Correct
this so we return positive numbers instead.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
(cherry picked from commit e744c06fca438dc08271e626034e632a270c91c8)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
fpu/softfloat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index b29256a..91497e8 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -1238,7 +1238,7 @@ float32 uint64_to_float32( uint64 a STATUS_PARAM )
if ( a == 0 ) return float32_zero;
shiftCount = countLeadingZeros64( a ) - 40;
if ( 0 <= shiftCount ) {
- return packFloat32( 1 > 0, 0x95 - shiftCount, a<<shiftCount );
+ return packFloat32(0, 0x95 - shiftCount, a<<shiftCount);
}
else {
shiftCount += 7;
@@ -1248,7 +1248,7 @@ float32 uint64_to_float32( uint64 a STATUS_PARAM )
else {
a <<= shiftCount;
}
- return roundAndPackFloat32( 1 > 0, 0x9C - shiftCount, a STATUS_VAR );
+ return roundAndPackFloat32(0, 0x9C - shiftCount, a STATUS_VAR);
}
}
--
1.7.12.1