1998-01-13 15:54:16 -05:00
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/* NetBSD/arm (RiscBSD) version.
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1998-01-13 15:58:47 -05:00
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Copyright (C) 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
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1997-07-16 10:54:40 -04:00
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Contributed by Mark Brinicombe (amb@physig.ph.kcl.ac.uk)
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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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1999-01-11 08:34:38 -05:00
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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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1997-07-16 10:54:40 -04:00
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/* Run-time Target Specification. */
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#define TARGET_VERSION fputs (" (ARM/NetBSD)", stderr);
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/* This is used in ASM_FILE_START. */
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#define ARM_OS_NAME "NetBSD"
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/* Unsigned chars produces much better code than signed. */
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#define DEFAULT_SIGNED_CHAR 0
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/* Since we always use GAS as our assembler we support stabs. */
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#define DBX_DEBUGGING_INFO 1
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/*#undef ASM_DECLARE_FUNCTION_NAME*/
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/* ARM6 family default cpu. */
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
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/* Default is to use APCS-32 mode. */
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2000-04-08 10:29:53 -04:00
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#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_FRAME)
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1997-07-16 10:54:40 -04:00
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#include "arm/aout.h"
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/* This gets redefined in config/netbsd.h. */
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#undef TARGET_MEM_FUNCTIONS
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#include <netbsd.h>
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/* Some defines for CPP.
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arm32 is the NetBSD port name, so we always define arm32 and __arm32__. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "\
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1998-01-13 15:54:16 -05:00
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-Dunix -Driscbsd -Darm32 -D__arm32__ -D__arm__ -D__NetBSD__ \
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config:
* a29k/a29k.h, a29k/unix.h, a29k/vx29k.h,
alpha/alpha-interix.h, alpha/alpha.h, alpha/linux.h,
alpha/openbsd.h, alpha/osf.h, alpha/vms.h, alpha/vxworks.h,
alpha/win-nt.h, arc/arc.h, arm/arm.h, arm/conix-elf.h,
arm/linux-aout.h, arm/linux-elf.h, arm/netbsd.h, arm/riscix.h,
arm/riscix1-1.h, arm/semiaof.h, arm/unknown-elf-oabi.h, arm/vxarm.h,
c4x/rtems.h, clipper/clix.h, convex/convex.h, d30v/d30v.h,
elxsi/elxsi.h, fr30/fr30.h, h8300/h8300.h, i370/linux.h, i370/mvs.h,
i370/oe.h, i386/386bsd.h, i386/aix386ng.h, i386/beos-elf.h,
i386/bsd386.h, i386/crtdll.h, i386/cygwin.h, i386/dgux.h,
i386/djgpp-rtems.h, i386/djgpp.h, i386/freebsd-aout.h, i386/freebsd.h,
i386/gnu.h, i386/i386-interix.h, i386/i386.h, i386/linux-aout.h,
i386/linux-oldld.h, i386/linux.h, i386/lynx-ng.h, i386/lynx.h,
i386/mach.h, i386/mingw32.h, i386/moss.h, i386/netbsd.h,
i386/netware.h, i386/next.h, i386/openbsd.h, i386/osf1elf.h,
i386/osfelf.h, i386/osfrose.h, i386/ptx4-i.h, i386/rtems.h,
i386/rtemself.h, i386/sco.h, i386/sco4.h, i386/sco4dbx.h, i386/sco5.h,
i386/scodbx.h, i386/sequent.h, i386/sol2.h, i386/sun.h, i386/sysv3.h,
i386/sysv4.h, i386/uwin.h, i386/vsta.h, i386/vxi386.h, i386/win-nt.h,
i386/win32.h, i860/fx2800.h, i860/i860.h, i860/mach.h, i860/sysv3.h,
i860/sysv4.h, i960/i960.h, i960/rtems.h, i960/vx960-coff.h,
ia64/ia64.h, ia64/linux.h, m32r/m32r.h, m68k/3b1.h, m68k/3b1g.h,
m68k/a-ux.h, m68k/altos3068.h, m68k/amix.h, m68k/apollo68.h,
m68k/crds.h, m68k/ctix.h, m68k/dpx2.h, m68k/hp2bsd.h, m68k/hp320.h,
m68k/hp3bsd.h, m68k/hp3bsd44.h, m68k/isi.h, m68k/linux-aout.h,
m68k/linux.h, m68k/lynx-ng.h, m68k/lynx.h, m68k/m68kemb.h,
m68k/m68kv4.h, m68k/mot3300.h, m68k/netbsd.h, m68k/news.h,
m68k/next.h, m68k/openbsd.h, m68k/pbb.h, m68k/plexus.h, m68k/rtems.h,
m68k/rtemself.h, m68k/sun2.h, m68k/sun3.h, m68k/sun3mach.h,
m68k/tower-as.h, m68k/tower.h, m68k/vxm68k.h, m88k/dgux.h,
m88k/dolph.h, m88k/luna.h, m88k/m88k-aout.h, m88k/m88k-coff.h,
m88k/openbsd.h, m88k/sysv3.h, m88k/sysv4.h, mips/bsd-4.h,
mips/bsd-5.h, mips/dec-bsd.h, mips/dec-osf1.h, mips/gnu.h,
mips/iris3.h, mips/iris5.h, mips/iris6.h, mips/linux.h, mips/mips.h,
mips/netbsd.h, mips/news4.h, mips/news5.h, mips/nws3250v4.h,
mips/openbsd.h, mips/osfrose.h, mips/rtems64.h, mips/sni-svr4.h,
mips/svr3-4.h, mips/svr3-5.h, mips/svr4-4.h, mips/svr4-5.h,
mips/ultrix.h, ns32k/encore.h, ns32k/merlin.h, ns32k/netbsd.h,
ns32k/ns32k.h, ns32k/pc532-mach.h, ns32k/pc532.h, ns32k/sequent.h,
ns32k/tek6000.h, ns32k/tek6100.h, ns32k/tek6200.h, pa/pa-hiux.h,
pa/pa-hpux.h, pa/pa-hpux7.h, pa/pa-linux.h, pa/pa-osf.h,
pa/pa-pro-end.h, pa/pa.h, pa/rtems.h, pj/linux.h, pj/pj.h,
romp/romp.h, rs6000/aix.h, rs6000/aix31.h, rs6000/aix41.h,
rs6000/aix43.h, rs6000/beos.h, rs6000/eabi.h, rs6000/eabisim.h,
rs6000/linux.h, rs6000/lynx.h, rs6000/mach.h, rs6000/rtems.h,
rs6000/sysv4.h, rs6000/vxppc.h, sh/elf.h, sh/linux.h, sh/rtems.h,
sh/rtemself.h, sh/sh.h, sparc/aout.h, sparc/elf.h, sparc/linux-aout.h,
sparc/linux.h, sparc/linux64.h, sparc/lite.h, sparc/litecoff.h,
sparc/liteelf.h, sparc/lynx-ng.h, sparc/lynx.h, sparc/netbsd.h,
sparc/openbsd.h, sparc/pbd.h, sparc/rtems.h, sparc/rtemself.h,
sparc/sol2-sld-64.h, sparc/sol2.h, sparc/sp64-aout.h,
sparc/sp64-elf.h, sparc/sp86x-aout.h, sparc/sp86x-elf.h,
sparc/sparc.h, sparc/sysv4.h, sparc/vxsim.h, sparc/vxsparc.h,
v850/rtems.h, vax/netbsd.h, vax/openbsd.h, vax/ultrix.h, vax/vax.h,
vax/vaxv.h, vax/vms.h, we32k/we32k.h
Replace -A() with -A=, the new assertion syntax.
From-SVN: r37213
2000-11-02 18:29:13 -05:00
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-Asystem=unix -Asystem=NetBSD -Acpu=arm -Amachine=arm"
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1997-07-16 10:54:40 -04:00
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/* Define _POSIX_SOURCE if necessary. */
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#undef CPP_SPEC
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#define CPP_SPEC "\
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%(cpp_cpu_arch) %(cpp_apcs_pc) %(cpp_float) %(cpp_endian) \
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%{posix:-D_POSIX_SOURCE} \
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"
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/* Because TARGET_DEFAULT sets ARM_FLAG_APCS_32 */
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#undef CPP_APCS_PC_DEFAULT_SPEC
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#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
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1998-08-13 20:29:32 -04:00
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/* Because TARGET_DEFAULT sets ARM_FLAG_SOFT_FLOAT */
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#undef CPP_FLOAT_DEFAULT_SPEC
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#define CPP_FLOAT_DEFAULT_SPEC "-D__SOFTFP__"
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1998-01-13 15:54:16 -05:00
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/* Pass -X to the linker so that it will strip symbols starting with 'L' */
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#undef LINK_SPEC
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#define LINK_SPEC "\
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-X %{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} \
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%{static:-Bstatic} %{assert*} \
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"
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1997-07-16 10:54:40 -04:00
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_UNSIGNED
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#define WCHAR_UNSIGNED 0
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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#define HANDLE_SYSV_PRAGMA
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/* We don't have any limit on the length as out debugger is GDB. */
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#undef DBX_CONTIN_LENGTH
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/* NetBSD does its profiling differently to the Acorn compiler. We
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don't need a word following the mcount call; and to skip it
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requires either an assembly stub or use of fomit-frame-pointer when
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compiling the profiling functions. Since we break Acorn CC
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compatibility below a little more won't hurt. */
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2000-04-08 10:29:53 -04:00
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#undef ARM_FUNCTION_PROFILER
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#define ARM_FUNCTION_PROFILER(STREAM,LABELNO) \
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1997-07-16 10:54:40 -04:00
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{ \
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fprintf(STREAM, "\tmov\t%sip, %slr\n", REGISTER_PREFIX, REGISTER_PREFIX); \
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fprintf(STREAM, "\tbl\tmcount\n"); \
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}
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1998-01-13 15:54:16 -05:00
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/* On the ARM `@' introduces a comment, so we must use something else
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for .type directives. */
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#undef TYPE_OPERAND_FMT
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#define TYPE_OPERAND_FMT "%%%s"
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1998-11-03 03:00:15 -05:00
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/* NetBSD uses the old PCC style aggregate returning conventions. */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 1
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/* Although not normally relevant (since by default, all aggregates
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are returned in memory) compiling some parts of libc requires
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non-APCS style struct returns. */
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#undef RETURN_IN_MEMORY
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1997-07-16 10:54:40 -04:00
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/* VERY BIG NOTE : Change of structure alignment for RiscBSD.
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There are consequences you should be aware of...
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Normally GCC/arm uses a structure alignment of 32 for compatibility
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with armcc. This means that structures are padded to a word
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1998-01-13 15:54:16 -05:00
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boundary. However this causes problems with bugged NetBSD kernel
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1997-07-16 10:54:40 -04:00
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code (possibly userland code as well - I have not checked every
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binary). The nature of this bugged code is to rely on sizeof()
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returning the correct size of various structures rounded to the
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nearest byte (SCSI and ether code are two examples, the vm system
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is another). This code breaks when the structure alignment is 32
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as sizeof() will report a word=rounded size. By changing the
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structure alignment to 8. GCC will conform to what is expected by
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NetBSD.
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This has several side effects that should be considered.
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1. Structures will only be aligned to the size of the largest member.
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i.e. structures containing only bytes will be byte aligned.
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structures containing shorts will be half word alinged.
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structures containing ints will be word aligned.
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1998-01-13 15:54:16 -05:00
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This means structures should be padded to a word boundary if
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1997-07-16 10:54:40 -04:00
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alignment of 32 is required for byte structures etc.
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2. A potential performance penalty may exist if strings are no longer
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word aligned. GCC will not be able to use word load/stores to copy
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short strings.
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This modification is not encouraged but with the present state of the
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NetBSD source tree it is currently the only solution that meets the
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requirements. */
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1999-10-28 05:28:04 -04:00
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#undef DEFAULT_STRUCTURE_SIZE_BOUNDARY
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#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 8
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