netbsd-elf.h revision 302408
1/* Definitions of target machine for GCC, 2 for i386/ELF NetBSD systems. 3 Copyright (C) 2001, 2002, 2004 Free Software Foundation, Inc. 4 Contributed by matthew green <mrg@eterna.com.au> 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GCC is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING. If not, write to 20the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21Boston, MA 02110-1301, USA. */ 22 23#define TARGET_OS_CPP_BUILTINS() \ 24 do \ 25 { \ 26 NETBSD_OS_CPP_BUILTINS_ELF(); \ 27 } \ 28 while (0) 29 30 31/* Extra specs needed for NetBSD/i386 ELF. */ 32 33#undef SUBTARGET_EXTRA_SPECS 34#define SUBTARGET_EXTRA_SPECS \ 35 { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \ 36 { "netbsd_entry_point", NETBSD_ENTRY_POINT }, 37 38 39/* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. */ 40 41#undef LINK_SPEC 42#define LINK_SPEC NETBSD_LINK_SPEC_ELF 43 44#define NETBSD_ENTRY_POINT "__start" 45 46 47/* Provide a CPP_SPEC appropriate for NetBSD. */ 48 49#undef CPP_SPEC 50#define CPP_SPEC "%(netbsd_cpp_spec)" 51 52 53/* Make gcc agree with <machine/ansi.h> */ 54 55#undef SIZE_TYPE 56#define SIZE_TYPE "unsigned int" 57 58#undef PTRDIFF_TYPE 59#define PTRDIFF_TYPE "int" 60 61#undef ASM_APP_ON 62#define ASM_APP_ON "#APP\n" 63 64#undef ASM_APP_OFF 65#define ASM_APP_OFF "#NO_APP\n" 66 67#undef ASM_COMMENT_START 68#define ASM_COMMENT_START "#" 69 70#undef DBX_REGISTER_NUMBER 71#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] 72 73 74/* Output assembler code to FILE to call the profiler. */ 75 76#undef NO_PROFILE_COUNTERS 77#define NO_PROFILE_COUNTERS 1 78 79#undef FUNCTION_PROFILER 80#define FUNCTION_PROFILER(FILE, LABELNO) \ 81{ \ 82 if (flag_pic) \ 83 fprintf (FILE, "\tcall __mcount@PLT\n"); \ 84 else \ 85 fprintf (FILE, "\tcall __mcount\n"); \ 86} 87 88 89#undef HAS_INIT_SECTION 90 91/* This is how we tell the assembler that two symbols have the same value. */ 92 93#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ 94 do { assemble_name(FILE, NAME1); \ 95 fputs(" = ", FILE); \ 96 assemble_name(FILE, NAME2); \ 97 fputc('\n', FILE); } while (0) 98 99/* A C statement to output to the stdio stream FILE an assembler 100 command to advance the location counter to a multiple of 1<<LOG 101 bytes if it is within MAX_SKIP bytes. 102 103 This is used to align code labels according to Intel recommendations. */ 104 105#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 106#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 107 if ((LOG) != 0) { \ 108 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 109 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 110 } 111#endif 112 113/* We always use gas here, so we don't worry about ECOFF assembler 114 problems. */ 115#undef TARGET_GAS 116#define TARGET_GAS 1 117 118/* Default to pcc-struct-return, because this is the ELF abi and 119 we don't care about compatibility with older gcc versions. */ 120#define DEFAULT_PCC_STRUCT_RETURN 1 121 122/* Attempt to enable execute permissions on the stack. */ 123#define ENABLE_EXECUTE_STACK NETBSD_ENABLE_EXECUTE_STACK 124 125#define TARGET_VERSION fprintf (stderr, " (NetBSD/i386 ELF)"); 126