softfloat: Apply patch corresponding to rebasing to softfloat-2a

This commit applies the changes to master which correspond to
replacing commit 158142c2c2df with a set of changes made by:
 * taking the SoftFloat-2a release
 * mechanically transforming the block comment style
 * reapplying Fabrice's original changes from 158142c2c2df

This commit was created by:
 diff -u 158142c2c2df import-sf-2a
 patch  -p1 --fuzz 10 <../relicense-patch.txt
(where import-sf-2a is the branch resulting from the changes above).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1421073508-23909-2-git-send-email-peter.maydell@linaro.org

3 files changed, 50 insertions, 56 deletions

diff --git a/fpu/softfloat-macros.h b/fpu/softfloat-macros.h
index 0dcda93..ca1d81e 100644
--- a/fpu/softfloat-macros.h
+++ b/fpu/softfloat-macros.h
@@ -4,10 +4,10 @@
  * Derived from SoftFloat.
  */
 
-/*============================================================================
-
+/*
+===============================================================================
 This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
-Arithmetic Package, Release 2b.
+Arithmetic Package, Release 2a.
 
 Written by John R. Hauser.  This work was made possible in part by the
 International Computer Science Institute, located at Suite 600, 1947 Center
@@ -16,24 +16,22 @@ National Science Foundation under grant MIP-9311980.  The original version
 of this code was written as part of a project to build a fixed-point vector
 processor in collaboration with the University of California at Berkeley,
 overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
-is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
 arithmetic/SoftFloat.html'.
 
-THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
-been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
-RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
-AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
-COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
-EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
-INSTITUTE (possibly via similar legal notice) AGAINST ALL LOSSES, COSTS, OR
-OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
+TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
 
 Derivative works are acceptable, even for commercial purposes, so long as
-(1) the source code for the derivative work includes prominent notice that
-the work is derivative, and (2) the source code includes prominent notice with
-these four paragraphs for those parts of this code that are retained.
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to these four paragraphs for those parts of
+this code that are retained.
 
-=============================================================================*/
+===============================================================================
+*/
 
 /*----------------------------------------------------------------------------
 | This macro tests for minimum version of the GNU C compiler.
@@ -107,10 +105,10 @@ static inline void shift64RightJamming(uint64_t a, int_fast16_t count, uint64_t
 | 63 bits of the extra result are all zero if and only if _all_but_the_last_
 | bits shifted off were all zero.  This extra result is stored in the location
 | pointed to by `z1Ptr'.  The value of `count' can be arbitrarily large.
-|     (This routine makes more sense if `a0' and `a1' are considered to form
-| a fixed-point value with binary point between `a0' and `a1'.  This fixed-
-| point value is shifted right by the number of bits given in `count', and
-| the integer part of the result is returned at the location pointed to by
+|     (This routine makes more sense if `a0' and `a1' are considered to form a
+| fixed-point value with binary point between `a0' and `a1'.  This fixed-point
+| value is shifted right by the number of bits given in `count', and the
+| integer part of the result is returned at the location pointed to by
 | `z0Ptr'.  The fractional part of the result may be slightly corrupted as
 | described above, and is returned at the location pointed to by `z1Ptr'.)
 *----------------------------------------------------------------------------*/
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index 518f694..39335b4 100644
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -4,10 +4,10 @@
  * Derived from SoftFloat.
  */
 
-/*============================================================================
-
+/*
+===============================================================================
 This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
-Arithmetic Package, Release 2b.
+Arithmetic Package, Release 2a.
 
 Written by John R. Hauser.  This work was made possible in part by the
 International Computer Science Institute, located at Suite 600, 1947 Center
@@ -16,24 +16,22 @@ National Science Foundation under grant MIP-9311980.  The original version
 of this code was written as part of a project to build a fixed-point vector
 processor in collaboration with the University of California at Berkeley,
 overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
-is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
 arithmetic/SoftFloat.html'.
 
-THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
-been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
-RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
-AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
-COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
-EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
-INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
-OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
+TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
 
 Derivative works are acceptable, even for commercial purposes, so long as
-(1) the source code for the derivative work includes prominent notice that
-the work is derivative, and (2) the source code includes prominent notice with
-these four paragraphs for those parts of this code that are retained.
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to these four paragraphs for those parts of
+this code that are retained.
 
-=============================================================================*/
+===============================================================================
+*/
 
 #if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32)
 #define SNAN_BIT_IS_ONE		1
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 16b21eb..6041dbd 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -4,10 +4,10 @@
  * Derived from SoftFloat.
  */
 
-/*============================================================================
-
-This C source file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
-Package, Release 2b.
+/*
+===============================================================================
+This C source file is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2a.
 
 Written by John R. Hauser.  This work was made possible in part by the
 International Computer Science Institute, located at Suite 600, 1947 Center
@@ -16,24 +16,22 @@ National Science Foundation under grant MIP-9311980.  The original version
 of this code was written as part of a project to build a fixed-point vector
 processor in collaboration with the University of California at Berkeley,
 overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
-is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
 arithmetic/SoftFloat.html'.
 
-THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
-been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
-RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
-AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
-COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
-EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
-INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
-OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
+TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
 
 Derivative works are acceptable, even for commercial purposes, so long as
-(1) the source code for the derivative work includes prominent notice that
-the work is derivative, and (2) the source code includes prominent notice with
-these four paragraphs for those parts of this code that are retained.
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to these four paragraphs for those parts of
+this code that are retained.
 
-=============================================================================*/
+===============================================================================
+*/
 
 /* softfloat (and in particular the code in softfloat-specialize.h) is
  * target-dependent and needs the TARGET_* macros.
@@ -529,9 +527,9 @@ static inline float64 packFloat64(flag zSign, int_fast16_t zExp, uint64_t zSig)
 | the inexact exception raised if the abstract input cannot be represented
 | exactly.  However, if the abstract value is too large, the overflow and
 | inexact exceptions are raised and an infinity or maximal finite value is
-| returned.  If the abstract value is too small, the input value is rounded
-| to a subnormal number, and the underflow and inexact exceptions are raised
-| if the abstract input cannot be represented exactly as a subnormal double-
+| returned.  If the abstract value is too small, the input value is rounded to
+| a subnormal number, and the underflow and inexact exceptions are raised if
+| the abstract input cannot be represented exactly as a subnormal double-
 | precision floating-point number.
 |     The input significand `zSig' has its binary point between bits 62
 | and 61, which is 10 bits to the left of the usual location.  This shifted