1995-02-01 16:58:22 -05:00
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/* Core target definitions for GNU compiler
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for IBM RS/6000 PowerPC targeted to embedded ELF systems.
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Copyright (C) 1995 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* eABI local switches */
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/* Set PCC_BITFIELD_TYPE_MATTERS to 0 to ignore the type of bitfields
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when calculating alignment. */
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#define MASK_NO_BITFIELD_TYPE 0x40000000
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1995-02-16 11:49:44 -05:00
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#define MASK_STRICT_ALIGN 0x20000000
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1995-02-01 16:58:22 -05:00
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#define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
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#define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
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1995-02-16 11:49:44 -05:00
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#define TARGET_STRICT_ALIGN (target_flags & MASK_STRICT_ALIGN)
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1995-02-01 16:58:22 -05:00
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#define SUBTARGET_SWITCHES \
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{ "bit-align", -MASK_NO_BITFIELD_TYPE }, \
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1995-02-16 11:49:44 -05:00
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{ "no-bit-align", MASK_NO_BITFIELD_TYPE }, \
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{ "strict-align", MASK_STRICT_ALIGN }, \
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{ "no-strict-align", -MASK_STRICT_ALIGN },
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1995-02-01 16:58:22 -05:00
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#include "rs6000/sysv4.h"
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/* For now, make stabs the default debugging type, not dwarf. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* Make int foo : 8 not cause structures to be aligned to an int boundary */
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#undef PCC_BITFIELD_TYPE_MATTERS
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#define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
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1995-02-16 11:49:44 -05:00
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/* Define this macro to be the value 1 if instructions will fail to
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work if given data not on the nominal alignment. If instructions
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will merely go slower in that case, define this macro as 0. */
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#undef STRICT_ALIGNMENT
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#define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
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1995-02-01 16:58:22 -05:00
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/* Align stack to 8 byte boundaries, rather than 16 bytes Sys V.4 uses */
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#undef STACK_BOUNDARY
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#define STACK_BOUNDARY 64
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/* No data type wants to be aligned rounder than this. */
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#undef BIGGEST_ALIGNMENT
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#define BIGGEST_ALIGNMENT 64
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (PowerPC Embedded)");
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/* FIXME: These should actually indicate PowerPC, when there is some
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standard way of expressing that. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES \
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"-DPPC -D__embedded__ -Asystem(embedded) -Acpu(powerpc) -Amachine(powerpc)"
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