Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/arm/netbsd-elf.h @ 90:99e7b6776dd1
implemeted __rectype expression. add CbC-exanples/fact-rectype.s
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 25 Dec 2011 04:04:42 +0900 |
| parents | 77e2b8dfacca |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Definitions of target machine for GNU compiler, NetBSD/arm ELF version. |
| 2 Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. | |
| 3 Contributed by Wasabi Systems, Inc. | |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published | |
| 9 by the Free Software Foundation; either version 3, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
| 15 License for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 /* Run-time Target Specification. */ | |
| 22 #undef TARGET_VERSION | |
| 23 #define TARGET_VERSION fputs (" (NetBSD/arm ELF)", stderr); | |
| 24 | |
| 25 /* arm.h defaults to ARM6 CPU. */ | |
| 26 | |
| 27 /* This defaults us to little-endian. */ | |
| 28 #ifndef TARGET_ENDIAN_DEFAULT | |
| 29 #define TARGET_ENDIAN_DEFAULT 0 | |
| 30 #endif | |
| 31 | |
| 32 #undef MULTILIB_DEFAULTS | |
| 33 | |
| 34 /* Default it to use ATPCS with soft-VFP. */ | |
| 35 #undef TARGET_DEFAULT | |
| 36 #define TARGET_DEFAULT \ | |
| 37 (MASK_APCS_FRAME \ | |
| 38 | TARGET_ENDIAN_DEFAULT) | |
| 39 | |
| 40 #undef ARM_DEFAULT_ABI | |
| 41 #define ARM_DEFAULT_ABI ARM_ABI_ATPCS | |
| 42 | |
| 43 #define TARGET_OS_CPP_BUILTINS() \ | |
| 44 do \ | |
| 45 { \ | |
| 46 NETBSD_OS_CPP_BUILTINS_ELF(); \ | |
| 47 } \ | |
| 48 while (0) | |
| 49 | |
| 50 #undef SUBTARGET_CPP_SPEC | |
| 51 #define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC | |
| 52 | |
| 53 #undef SUBTARGET_EXTRA_ASM_SPEC | |
| 54 #define SUBTARGET_EXTRA_ASM_SPEC \ | |
| 55 "-matpcs %{fpic|fpie:-k} %{fPIC|fPIE:-k}" | |
| 56 | |
| 57 /* Default to full VFP if -mhard-float is specified. */ | |
| 58 #undef SUBTARGET_ASM_FLOAT_SPEC | |
| 59 #define SUBTARGET_ASM_FLOAT_SPEC \ | |
| 60 "%{mhard-float:{!mfpu=*:-mfpu=vfp}} \ | |
| 61 %{mfloat-abi=hard:{!mfpu=*:-mfpu=vfp}}" | |
| 62 | |
| 63 #undef SUBTARGET_EXTRA_SPECS | |
| 64 #define SUBTARGET_EXTRA_SPECS \ | |
| 65 { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \ | |
| 66 { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \ | |
| 67 { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \ | |
| 68 { "netbsd_entry_point", NETBSD_ENTRY_POINT }, | |
| 69 | |
| 70 #define NETBSD_ENTRY_POINT "__start" | |
| 71 | |
| 72 #undef LINK_SPEC | |
| 73 #define LINK_SPEC \ | |
| 74 "-X %{mbig-endian:-EB} %{mlittle-endian:-EL} \ | |
| 75 %(netbsd_link_spec)" | |
| 76 | |
| 77 /* Make GCC agree with <machine/ansi.h>. */ | |
| 78 | |
| 79 #undef SIZE_TYPE | |
| 80 #define SIZE_TYPE "long unsigned int" | |
| 81 | |
| 82 #undef PTRDIFF_TYPE | |
| 83 #define PTRDIFF_TYPE "long int" | |
| 84 | |
| 85 /* We don't have any limit on the length as out debugger is GDB. */ | |
| 86 #undef DBX_CONTIN_LENGTH | |
| 87 | |
| 88 /* NetBSD does its profiling differently to the Acorn compiler. We | |
| 89 don't need a word following the mcount call; and to skip it | |
| 90 requires either an assembly stub or use of fomit-frame-pointer when | |
| 91 compiling the profiling functions. Since we break Acorn CC | |
| 92 compatibility below a little more won't hurt. */ | |
| 93 | |
| 94 #undef ARM_FUNCTION_PROFILER | |
| 95 #define ARM_FUNCTION_PROFILER(STREAM,LABELNO) \ | |
| 96 { \ | |
| 97 asm_fprintf (STREAM, "\tmov\t%Rip, %Rlr\n"); \ | |
| 98 asm_fprintf (STREAM, "\tbl\t__mcount%s\n", \ | |
| 99 (TARGET_ARM && NEED_PLT_RELOC) \ | |
| 100 ? "(PLT)" : ""); \ | |
| 101 } | |
| 102 | |
| 103 /* VERY BIG NOTE: Change of structure alignment for NetBSD/arm. | |
| 104 There are consequences you should be aware of... | |
| 105 | |
| 106 Normally GCC/arm uses a structure alignment of 32 for compatibility | |
| 107 with armcc. This means that structures are padded to a word | |
| 108 boundary. However this causes problems with bugged NetBSD kernel | |
| 109 code (possibly userland code as well - I have not checked every | |
| 110 binary). The nature of this bugged code is to rely on sizeof() | |
| 111 returning the correct size of various structures rounded to the | |
| 112 nearest byte (SCSI and ether code are two examples, the vm system | |
| 113 is another). This code breaks when the structure alignment is 32 | |
| 114 as sizeof() will report a word=rounded size. By changing the | |
| 115 structure alignment to 8. GCC will conform to what is expected by | |
| 116 NetBSD. | |
| 117 | |
| 118 This has several side effects that should be considered. | |
| 119 1. Structures will only be aligned to the size of the largest member. | |
| 120 i.e. structures containing only bytes will be byte aligned. | |
| 121 structures containing shorts will be half word aligned. | |
| 122 structures containing ints will be word aligned. | |
| 123 | |
| 124 This means structures should be padded to a word boundary if | |
| 125 alignment of 32 is required for byte structures etc. | |
| 126 | |
| 127 2. A potential performance penalty may exist if strings are no longer | |
| 128 word aligned. GCC will not be able to use word load/stores to copy | |
| 129 short strings. | |
| 130 | |
| 131 This modification is not encouraged but with the present state of the | |
| 132 NetBSD source tree it is currently the only solution that meets the | |
| 133 requirements. */ | |
| 134 | |
| 135 #undef DEFAULT_STRUCTURE_SIZE_BOUNDARY | |
| 136 #define DEFAULT_STRUCTURE_SIZE_BOUNDARY 8 | |
| 137 | |
| 138 /* Clear the instruction cache from `BEG' to `END'. This makes a | |
| 139 call to the ARM_SYNC_ICACHE architecture specific syscall. */ | |
| 140 #define CLEAR_INSN_CACHE(BEG, END) \ | |
| 141 do \ | |
| 142 { \ | |
| 143 extern int sysarch(int number, void *args); \ | |
| 144 struct \ | |
| 145 { \ | |
| 146 unsigned int addr; \ | |
| 147 int len; \ | |
| 148 } s; \ | |
| 149 s.addr = (unsigned int)(BEG); \ | |
| 150 s.len = (END) - (BEG); \ | |
| 151 (void) sysarch (0, &s); \ | |
| 152 } \ | |
| 153 while (0) | |
| 154 | |
| 155 #undef FPUTYPE_DEFAULT | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
156 #define FPUTYPE_DEFAULT "vfp" |
| 0 | 157 |