git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| c55dcc7d | 1 | /* Definitions of target machine for GNU compiler, for BeOS. |
| 9ebbca7d | 2 | Copyright (C) 1997, 2000 Free Software Foundation, Inc. |
| c55dcc7d FF |
3 | Contributed by Fred Fish (fnf@cygnus.com), based on aix41.h |
| 4 | from David Edelsohn (edelsohn@npac.syr.edu). | |
| 5 | ||
| 6 | This file is part of GNU CC. | |
| 7 | ||
| 8 | GNU CC is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 2, or (at your option) | |
| 11 | any later version. | |
| 12 | ||
| 13 | GNU CC is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | GNU General Public License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License | |
| 19 | along with GNU CC; see the file COPYING. If not, write to | |
| 20 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
| 21 | Boston, MA 02111-1307, USA. */ | |
| 22 | ||
| 23 | ||
| 9ebbca7d GK |
24 | #include "rs6000/rs6000.h" |
| 25 | #include "rs6000/aix.h" | |
| 26 | ||
| c55dcc7d FF |
27 | /* Enable AIX XL compiler calling convention breakage compatibility. */ |
| 28 | #define MASK_XL_CALL 0x40000000 | |
| 29 | #define TARGET_XL_CALL (target_flags & MASK_XL_CALL) | |
| 30 | #undef SUBTARGET_SWITCHES | |
| 31 | #define SUBTARGET_SWITCHES \ | |
| 32 | {"xl-call", MASK_XL_CALL}, \ | |
| 33 | {"no-xl-call", - MASK_XL_CALL}, \ | |
| 34 | {"threads", 0}, \ | |
| 35 | {"pe", 0}, | |
| 36 | ||
| c55dcc7d FF |
37 | #undef ASM_SPEC |
| 38 | #define ASM_SPEC "-u %(asm_cpu)" | |
| 39 | ||
| 40 | #undef CPP_PREDEFINES | |
| 41 | /* __POWERPC__ must be defined for some header files */ | |
| 42 | #define CPP_PREDEFINES "-D__BEOS__ -D__POWERPC__ -Asystem(beos) -Acpu(powerpc) -Amachine(powerpc)" | |
| 43 | ||
| 44 | #undef CPP_SPEC | |
| 45 | #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_cpu)" | |
| 46 | ||
| 47 | #undef CPP_DEFAULT_SPEC | |
| 48 | #define CPP_DEFAULT_SPEC "-D_ARCH_PPC" | |
| 49 | ||
| 50 | /* This is the easiest way to disable use of gcc's builtin alloca, | |
| 51 | which in the current BeOS release (DR9) is a problem because of the | |
| 52 | relatively low default stack size of 256K with no way to expand it. | |
| 53 | So anything we compile for the BeOS target should not use the | |
| 54 | builtin alloca. This also has the unwanted side effect of | |
| 55 | disabling all builtin functions though. */ | |
| 56 | ||
| 57 | #undef CC1_SPEC | |
| 58 | #define CC1_SPEC "%{!fbuiltin: -fno-builtin}" | |
| 59 | #undef CC1PLUS_SPEC | |
| 60 | #define CC1PLUS_SPEC "%{!fbuiltin: -fno-builtin}" | |
| 61 | ||
| 62 | #undef ASM_DEFAULT_SPEC | |
| 63 | #define ASM_DEFAULT_SPEC "-mppc" | |
| 64 | ||
| 65 | #undef TARGET_DEFAULT | |
| 66 | #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS) | |
| 67 | ||
| 68 | #undef PROCESSOR_DEFAULT | |
| 69 | #define PROCESSOR_DEFAULT PROCESSOR_PPC603 | |
| 70 | ||
| 71 | /* Define this macro as a C expression for the initializer of an | |
| 72 | array of string to tell the driver program which options are | |
| 73 | defaults for this target and thus do not need to be handled | |
| 74 | specially when using `MULTILIB_OPTIONS'. | |
| 75 | ||
| 76 | Do not define this macro if `MULTILIB_OPTIONS' is not defined in | |
| 77 | the target makefile fragment or if none of the options listed in | |
| 78 | `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */ | |
| 79 | ||
| 80 | #undef MULTILIB_DEFAULTS | |
| 81 | #define MULTILIB_DEFAULTS { "mcpu=powerpc" } | |
| 82 | ||
| c55dcc7d FF |
83 | /* These empty definitions get rid of the attempt to link in crt0.o |
| 84 | and any libraries like libc.a. | |
| 85 | On BeOS the ld executable is actually a linker front end that first runs | |
| 86 | the GNU linker with the -r option to generate a relocatable XCOFF output | |
| 87 | file, and then runs Metrowork's linker (mwld) to generate a fully linked | |
| 88 | executable. */ | |
| 89 | ||
| 90 | #undef LIB_SPEC | |
| 91 | #define LIB_SPEC "" | |
| 92 | ||
| 93 | #undef LINK_SPEC | |
| 94 | #define LINK_SPEC "" | |
| 95 | ||
| 96 | #undef STARTFILE_SPEC | |
| 97 | #define STARTFILE_SPEC "" | |
| 98 | ||
| 99 | /* Text to write out after a CALL that may be replaced by glue code by | |
| 100 | the loader. */ | |
| 101 | ||
| 102 | #undef RS6000_CALL_GLUE | |
| 103 | #define RS6000_CALL_GLUE "cror 15,15,15" | |
| 104 | ||
| 105 | /* Struct alignments are done on 4 byte boundaries for all types. */ | |
| 106 | #undef BIGGEST_FIELD_ALIGNMENT | |
| 107 | #define BIGGEST_FIELD_ALIGNMENT 32 |