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Diffstat (limited to 'gcc/config/rs6000/beos.h')
| -rwxr-xr-x | gcc/config/rs6000/beos.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/gcc/config/rs6000/beos.h b/gcc/config/rs6000/beos.h new file mode 100755 index 0000000..851601f --- /dev/null +++ b/gcc/config/rs6000/beos.h @@ -0,0 +1,124 @@ +/* Definitions of target machine for GNU compiler, for BeOS. + Copyright (C) 1997 Free Software Foundation, Inc. + Contributed by Fred Fish (fnf@cygnus.com), based on aix41.h + from David Edelsohn (edelsohn@npac.syr.edu). + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + + +/* Enable AIX XL compiler calling convention breakage compatibility. */ +#define MASK_XL_CALL 0x40000000 +#define TARGET_XL_CALL (target_flags & MASK_XL_CALL) +#undef SUBTARGET_SWITCHES +#define SUBTARGET_SWITCHES \ + {"xl-call", MASK_XL_CALL}, \ + {"no-xl-call", - MASK_XL_CALL}, \ + {"threads", 0}, \ + {"pe", 0}, + +#include "rs6000/rs6000.h" + +#undef ASM_SPEC +#define ASM_SPEC "-u %(asm_cpu)" + +#undef CPP_PREDEFINES +/* __POWERPC__ must be defined for some header files */ +#define CPP_PREDEFINES "-D__BEOS__ -D__POWERPC__ -Asystem(beos) -Acpu(powerpc) -Amachine(powerpc)" + +#undef CPP_SPEC +#define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_cpu)" + +#undef CPP_DEFAULT_SPEC +#define CPP_DEFAULT_SPEC "-D_ARCH_PPC" + +/* This is the easiest way to disable use of gcc's builtin alloca, + which in the current BeOS release (DR9) is a problem because of the + relatively low default stack size of 256K with no way to expand it. + So anything we compile for the BeOS target should not use the + builtin alloca. This also has the unwanted side effect of + disabling all builtin functions though. */ + +#undef CC1_SPEC +#define CC1_SPEC "%{!fbuiltin: -fno-builtin}" +#undef CC1PLUS_SPEC +#define CC1PLUS_SPEC "%{!fbuiltin: -fno-builtin}" + +#undef ASM_DEFAULT_SPEC +#define ASM_DEFAULT_SPEC "-mppc" + +#undef TARGET_DEFAULT +#define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS) + +#undef PROCESSOR_DEFAULT +#define PROCESSOR_DEFAULT PROCESSOR_PPC603 + +/* Define this macro as a C expression for the initializer of an + array of string to tell the driver program which options are + defaults for this target and thus do not need to be handled + specially when using `MULTILIB_OPTIONS'. + + Do not define this macro if `MULTILIB_OPTIONS' is not defined in + the target makefile fragment or if none of the options listed in + `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */ + +#undef MULTILIB_DEFAULTS +#define MULTILIB_DEFAULTS { "mcpu=powerpc" } + +/* These are not necessary when we pass -u to the assembler, and undefining + them saves a great deal of space in object files. */ + +#undef ASM_OUTPUT_EXTERNAL +#undef ASM_OUTPUT_EXTERNAL_LIBCALL +#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ +{ rtx _symref = XEXP (DECL_RTL (DECL), 0); \ + if ((TREE_CODE (DECL) == VAR_DECL \ + || TREE_CODE (DECL) == FUNCTION_DECL) \ + && (NAME)[strlen (NAME) - 1] != ']') \ + { \ + char *_name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5); \ + strcpy (_name, XSTR (_symref, 0)); \ + strcat (_name, TREE_CODE (DECL) == FUNCTION_DECL ? "[DS]" : "[RW]"); \ + XSTR (_symref, 0) = _name; \ + } \ +} + +/* These empty definitions get rid of the attempt to link in crt0.o + and any libraries like libc.a. + On BeOS the ld executable is actually a linker front end that first runs + the GNU linker with the -r option to generate a relocatable XCOFF output + file, and then runs Metrowork's linker (mwld) to generate a fully linked + executable. */ + +#undef LIB_SPEC +#define LIB_SPEC "" + +#undef LINK_SPEC +#define LINK_SPEC "" + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC "" + +/* Text to write out after a CALL that may be replaced by glue code by + the loader. */ + +#undef RS6000_CALL_GLUE +#define RS6000_CALL_GLUE "cror 15,15,15" + +/* Struct alignments are done on 4 byte boundaries for all types. */ +#undef BIGGEST_FIELD_ALIGNMENT +#define BIGGEST_FIELD_ALIGNMENT 32 |