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soft-fp: Support using struct layout attributes on bit-fields.

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This commit is contained in:
Kai Tietz
2012-03-01 16:22:09 +00:00
committed by Joseph Myers
parent 9ea559e401
commit f775c276fd
6 changed files with 32 additions and 13 deletions
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12
soft-fp/soft-fp.h
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@ -1,5 +1,5 @@
/* Software floating-point emulation.
Copyright (C) 1997,1998,1999,2000,2002,2003,2005,2006,2007
Copyright (C) 1997,1998,1999,2000,2002,2003,2005,2006,2007,2012
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@cygnus.com),
@ -84,6 +84,16 @@
#define FP_EX_DENORM 0
#endif
/* _FP_STRUCT_LAYOUT may be defined as an attribute to determine the
struct layout variant used for structures where bit-fields are used
to access specific parts of binary floating-point numbers. This is
required for systems where the default ABI uses struct layout with
differences in how consecutive bit-fields are laid out from the
default expected by soft-fp. */
#ifndef _FP_STRUCT_LAYOUT
#define _FP_STRUCT_LAYOUT
#endif
#ifdef _FP_DECL_EX
#define FP_DECL_EX \
int _fex = 0; \