1 /* Definitions of target machine for GCC, 2 for i386/ELF NetBSD systems. 3 Copyright (C) 2001-2020 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 /* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. */ 31 32 #undef LINK_SPEC 33 #define LINK_SPEC NETBSD_LINK_SPEC_ELF 34 35 #define NETBSD_ENTRY_POINT "__start" 36 37 38 /* Provide a CPP_SPEC appropriate for NetBSD. */ 39 40 #undef CPP_SPEC 41 #define CPP_SPEC "%(netbsd_cpp_spec)" 42 43 44 /* Provide C11_SPEC/CC1PLUS_SPEC appropriate for NetBSD/i386. */ 45 #define NETBSD_CC1_CPU_SPEC " %(cc1_cpu) " 46 47 #undef CC1_SPEC 48 #define CC1_SPEC NETBSD_CC1_AND_CC1PLUS_SPEC NETBSD_CC1_CPU_SPEC 49 50 #undef CC1PLUS_SPEC 51 #define CC1PLUS_SPEC NETBSD_CC1_AND_CC1PLUS_SPEC NETBSD_CC1_CPU_SPEC 52 53 54 /* Make gcc agree with <machine/ansi.h> */ 55 56 #undef SIZE_TYPE 57 #define SIZE_TYPE "unsigned int" 58 59 #undef PTRDIFF_TYPE 60 #define PTRDIFF_TYPE "int" 61 62 #undef ASM_APP_ON 63 #define ASM_APP_ON "#APP\n" 64 65 #undef ASM_APP_OFF 66 #define ASM_APP_OFF "#NO_APP\n" 67 68 #undef ASM_COMMENT_START 69 #define ASM_COMMENT_START "#" 70 71 #undef DBX_REGISTER_NUMBER 72 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] 73 74 75 /* Output assembler code to FILE to call the profiler. */ 76 77 #undef NO_PROFILE_COUNTERS 78 #define NO_PROFILE_COUNTERS 1 79 80 #undef FUNCTION_PROFILER 81 #define FUNCTION_PROFILER(FILE, LABELNO) \ 82 { \ 83 if (flag_pic) \ 84 fprintf (FILE, "\tcall __mcount@PLT\n"); \ 85 else \ 86 fprintf (FILE, "\tcall __mcount\n"); \ 87 } 88 89 90 #undef HAS_INIT_SECTION 91 92 /* This is how we tell the assembler that two symbols have the same value. */ 93 94 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ 95 do { assemble_name(FILE, NAME1); \ 96 fputs(" = ", FILE); \ 97 assemble_name(FILE, NAME2); \ 98 fputc('\n', FILE); } while (0) 99 100 /* A C statement to output to the stdio stream FILE an assembler 101 command to advance the location counter to a multiple of 1<<LOG 102 bytes if it is within MAX_SKIP bytes. 103 104 This is used to align code labels according to Intel recommendations. */ 105 106 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 107 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 108 if ((LOG) != 0) { \ 109 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ 110 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 111 else \ 112 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 113 } 114 #endif 115 116 /* We always use gas here, so we don't worry about ECOFF assembler 117 problems. */ 118 #undef TARGET_GAS 119 #define TARGET_GAS 1 120 121 /* Default to pcc-struct-return, because this is the ELF abi and 122 we don't care about compatibility with older gcc versions. */ 123 #define DEFAULT_PCC_STRUCT_RETURN 1 124 125 #define HAVE_ENABLE_EXECUTE_STACK 126 127 #define IX86_MAYBE_NO_LIBGCC_TFMODE 128 129 /* Preserve i386 psABI */ 130 #undef PREFERRED_STACK_BOUNDARY_DEFAULT 131 #define PREFERRED_STACK_BOUNDARY_DEFAULT MIN_STACK_BOUNDARY 132 133 /* NetBSD/x86 on 32-bit places the ASAN shadow map at 0x40000000. */ 134 #undef X86_32_ASAN_BIT_OFFSET 135 #define X86_32_ASAN_BIT_OFFSET 30 136