1 /* Definitions of target machine for GCC, 2 for i386/ELF NetBSD systems. 3 Copyright (C) 2001-2014 Free Software Foundation, Inc. 4 Contributed by matthew green <mrg@eterna.com.au> 5 6 This file is part of GCC. 7 8 GCC 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 3, or (at your option) 11 any later version. 12 13 GCC 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 GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #define TARGET_OS_CPP_BUILTINS() \ 23 do \ 24 { \ 25 NETBSD_OS_CPP_BUILTINS_ELF(); \ 26 } \ 27 while (0) 28 29 30 /* Extra specs needed for NetBSD/i386 ELF. */ 31 32 #undef SUBTARGET_EXTRA_SPECS 33 #define SUBTARGET_EXTRA_SPECS \ 34 { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \ 35 { "netbsd_entry_point", NETBSD_ENTRY_POINT }, 36 37 38 /* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. */ 39 40 #undef LINK_SPEC 41 #define LINK_SPEC NETBSD_LINK_SPEC_ELF 42 43 #define NETBSD_ENTRY_POINT "__start" 44 45 46 /* Provide a CPP_SPEC appropriate for NetBSD. */ 47 48 #undef CPP_SPEC 49 #define CPP_SPEC "%(netbsd_cpp_spec)" 50 51 52 /* Make gcc agree with <machine/ansi.h> */ 53 54 #undef SIZE_TYPE 55 #define SIZE_TYPE "unsigned int" 56 57 #undef PTRDIFF_TYPE 58 #define PTRDIFF_TYPE "int" 59 60 #undef ASM_APP_ON 61 #define ASM_APP_ON "#APP\n" 62 63 #undef ASM_APP_OFF 64 #define ASM_APP_OFF "#NO_APP\n" 65 66 #undef ASM_COMMENT_START 67 #define ASM_COMMENT_START "#" 68 69 #undef DBX_REGISTER_NUMBER 70 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] 71 72 73 /* Output assembler code to FILE to call the profiler. */ 74 75 #undef NO_PROFILE_COUNTERS 76 #define NO_PROFILE_COUNTERS 1 77 78 #undef FUNCTION_PROFILER 79 #define FUNCTION_PROFILER(FILE, LABELNO) \ 80 { \ 81 if (flag_pic) \ 82 fprintf (FILE, "\tcall __mcount@PLT\n"); \ 83 else \ 84 fprintf (FILE, "\tcall __mcount\n"); \ 85 } 86 87 88 #undef HAS_INIT_SECTION 89 90 /* This is how we tell the assembler that two symbols have the same value. */ 91 92 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ 93 do { assemble_name(FILE, NAME1); \ 94 fputs(" = ", FILE); \ 95 assemble_name(FILE, NAME2); \ 96 fputc('\n', FILE); } while (0) 97 98 /* A C statement to output to the stdio stream FILE an assembler 99 command to advance the location counter to a multiple of 1<<LOG 100 bytes if it is within MAX_SKIP bytes. 101 102 This is used to align code labels according to Intel recommendations. */ 103 104 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 105 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 106 if ((LOG) != 0) { \ 107 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 108 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 109 } 110 #endif 111 112 /* We always use gas here, so we don't worry about ECOFF assembler 113 problems. */ 114 #undef TARGET_GAS 115 #define TARGET_GAS 1 116 117 /* Default to pcc-struct-return, because this is the ELF abi and 118 we don't care about compatibility with older gcc versions. */ 119 #define DEFAULT_PCC_STRUCT_RETURN 1 120 121 #define HAVE_ENABLE_EXECUTE_STACK 122