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soft-fp updated from GLIBC upstream. 

From-SVN: r193540
This commit is contained in:
Marcus Shawcroft 2012-11-15 18:39:47 +00:00 committed by Marcus Shawcroft
parent 59bdc31c02
commit 54f4eaf08d
3 changed files with 46 additions and 29 deletions
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4
libgcc/ChangeLog
View File

@ -1,3 +1,7 @@
2012-11-15 Marcus Shawcroft <marcus.shawcroft@arm.com>
* soft-fp: Updated from glibc upstream.
2012-11-06 Ian Lance Taylor <iant@google.com>
* generic-morestack.c (__generic_morestack): Align the returned

30
libgcc/soft-fp/op-common.h
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@ -1,5 +1,5 @@
/* Software floating-point emulation. Common operations.
Copyright (C) 1997,1998,1999,2006,2007 Free Software Foundation, Inc.
Copyright (C) 1997,1998,1999,2006,2007,2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@cygnus.com),
Jakub Jelinek (jj@ultra.linux.cz),
@ -134,6 +134,12 @@ do { \
#define _FP_PACK_SEMIRAW(fs, wc, X) \
do { \
_FP_ROUND(wc, X); \
if (X##_e == 0 && !_FP_FRAC_ZEROP_##wc(X)) \
{ \
if ((FP_CUR_EXCEPTIONS & FP_EX_INEXACT) \
|| (FP_TRAPPING_EXCEPTIONS & FP_EX_UNDERFLOW)) \
FP_SET_EXCEPTION(FP_EX_UNDERFLOW); \
} \
if (_FP_FRAC_HIGH_##fs(X) \
& (_FP_OVERFLOW_##fs >> 1)) \
{ \
@ -143,20 +149,15 @@ do { \
_FP_OVERFLOW_SEMIRAW(fs, wc, X); \
} \
_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
if (!_FP_EXP_NORMAL(fs, wc, X) && !_FP_FRAC_ZEROP_##wc(X)) \
if (X##_e == _FP_EXPMAX_##fs && !_FP_FRAC_ZEROP_##wc(X)) \
{ \
if (X##_e == 0) \
FP_SET_EXCEPTION(FP_EX_UNDERFLOW); \
else \
if (!_FP_KEEPNANFRACP) \
{ \
if (!_FP_KEEPNANFRACP) \
{ \
_FP_FRAC_SET_##wc(X, _FP_NANFRAC_##fs); \
X##_s = _FP_NANSIGN_##fs; \
} \
else \
_FP_FRAC_HIGH_RAW_##fs(X) |= _FP_QNANBIT_##fs; \
_FP_FRAC_SET_##wc(X, _FP_NANFRAC_##fs); \
X##_s = _FP_NANSIGN_##fs; \
} \
else \
_FP_FRAC_HIGH_RAW_##fs(X) |= _FP_QNANBIT_##fs; \
} \
} while (0)
@ -226,13 +227,16 @@ do { \
{ \
X##_e = 1; \
_FP_FRAC_SET_##wc(X, _FP_ZEROFRAC_##wc); \
FP_SET_EXCEPTION(FP_EX_INEXACT); \
} \
else \
{ \
X##_e = 0; \
_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
FP_SET_EXCEPTION(FP_EX_UNDERFLOW); \
} \
if ((FP_CUR_EXCEPTIONS & FP_EX_INEXACT) \
|| (FP_TRAPPING_EXCEPTIONS & FP_EX_UNDERFLOW)) \
FP_SET_EXCEPTION(FP_EX_UNDERFLOW); \
} \
else \
{ \

41
libgcc/soft-fp/soft-fp.h
View File

@ -128,6 +128,13 @@
#define FP_CLEAR_EXCEPTIONS \
_fex = 0
#define FP_CUR_EXCEPTIONS \
(_fex)
#ifndef FP_TRAPPING_EXCEPTIONS
#define FP_TRAPPING_EXCEPTIONS 0
#endif
#define _FP_ROUND_NEAREST(wc, X) \
do { \
if ((_FP_FRAC_LOW_##wc(X) & 15) != _FP_WORK_ROUND) \
@ -151,22 +158,24 @@ do { \
#define _FP_ROUND(wc, X) \
do { \
if (_FP_FRAC_LOW_##wc(X) & 7) \
FP_SET_EXCEPTION(FP_EX_INEXACT); \
switch (FP_ROUNDMODE) \
{ \
case FP_RND_NEAREST: \
_FP_ROUND_NEAREST(wc,X); \
break; \
case FP_RND_ZERO: \
_FP_ROUND_ZERO(wc,X); \
break; \
case FP_RND_PINF: \
_FP_ROUND_PINF(wc,X); \
break; \
case FP_RND_MINF: \
_FP_ROUND_MINF(wc,X); \
break; \
} \
{ \
FP_SET_EXCEPTION(FP_EX_INEXACT); \
switch (FP_ROUNDMODE) \
{ \
case FP_RND_NEAREST: \
_FP_ROUND_NEAREST(wc,X); \
break; \
case FP_RND_ZERO: \
_FP_ROUND_ZERO(wc,X); \
break; \
case FP_RND_PINF: \
_FP_ROUND_PINF(wc,X); \
break; \
case FP_RND_MINF: \
_FP_ROUND_MINF(wc,X); \
break; \
} \
} \
} while (0)
#define FP_CLS_NORMAL 0