91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/* 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, 1996 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, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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/* 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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Note, little endian systems trap on unaligned addresses, so never
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turn off strict alignment in that case. */
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#undef STRICT_ALIGNMENT
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#define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN || TARGET_LITTLE_ENDIAN)
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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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/* Put PC relative got entries in .got2 */
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#undef MINIMAL_TOC_SECTION_ASM_OP
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#define MINIMAL_TOC_SECTION_ASM_OP \
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((TARGET_RELOCATABLE) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
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/* Put relocatable data in .data, not .rodata so initialized pointers can be updated */
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#undef CONST_SECTION_ASM_OP
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#define CONST_SECTION_ASM_OP \
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((TARGET_RELOCATABLE) ? "\t.section\t\".data\"\t# .rodata" : "\t.section\t\".rodata\"")
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/* Invoke an initializer function to set up the GOT */
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#define NAME__MAIN "__eabi"
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#undef TARGET_VERSION
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#define TARGET_VERSION fprintf (stderr, " (PowerPC Embedded)");
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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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/* Clue the simulator in to use netbsd */
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#undef LINK_START_SPEC
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#define LINK_START_SPEC "%{msim: %{!Ttext*: -Ttext 0x10000074}}"
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/* Use the simulator crt0 or mvme and libgloss/newlib libraries if desired */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "crti.o%s \
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%{mmvme: mvme-crt0.o%s} \
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%{msim: sim-crt0.o%s}"
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#undef LIB_SPEC
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#define LIB_SPEC "\
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%{mmvme: -lmvme -lc -lmvme} \
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%{msim: -lsim -lc -lsim}"
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#undef LIBGCC_SPEC
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#define LIBGCC_SPEC "libgcc.a%s"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtn.o%s"
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