1 /* Definitions for Intel 386 running DragonFly with ELF format 2 Copyright (C) 1996, 2000, 2002, 2004, 2007, 2010, 2011 3 Free Software Foundation, Inc. 4 Contributed by Eric Youngdale. 5 Modified for stabs-in-ELF by H.J. Lu. 6 Adapted from GNU/Linux version by John Polstra. 7 Continued development by David O'Brien <obrien@freebsd.org> 8 9 This file is part of GCC. 10 11 GCC is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 3, or (at your option) 14 any later version. 15 16 GCC is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with GCC; see the file COPYING3. If not see 23 <http://www.gnu.org/licenses/>. */ 24 25 26 /* Override the default comment-starter of "/". */ 27 #undef ASM_COMMENT_START 28 #define ASM_COMMENT_START "#" 29 30 #undef ASM_APP_ON 31 #define ASM_APP_ON "#APP\n" 32 33 #undef ASM_APP_OFF 34 #define ASM_APP_OFF "#NO_APP\n" 35 36 #undef DBX_REGISTER_NUMBER 37 #define DBX_REGISTER_NUMBER(n) \ 38 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 39 40 #undef NO_PROFILE_COUNTERS 41 #define NO_PROFILE_COUNTERS 1 42 43 /* Tell final.c that we don't need a label passed to mcount. */ 44 45 #undef MCOUNT_NAME 46 #define MCOUNT_NAME ".mcount" 47 48 /* Make gcc agree with <machine/ansi.h>. */ 49 50 #undef SIZE_TYPE 51 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") 52 53 #undef PTRDIFF_TYPE 54 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 55 56 #undef WCHAR_TYPE_SIZE 57 #define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD) 58 59 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ 60 #define SUBTARGET_EXTRA_SPECS \ 61 { "dfbsd_dynamic_linker", DFBSD_DYNAMIC_LINKER } 62 63 64 /* A C statement to output to the stdio stream FILE an assembler 65 command to advance the location counter to a multiple of 1<<LOG 66 bytes if it is within MAX_SKIP bytes. 67 68 This is used to align code labels according to Intel recommendations. */ 69 70 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 71 #undef ASM_OUTPUT_MAX_SKIP_ALIGN 72 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ 73 if ((LOG) != 0) { \ 74 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 75 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 76 } 77 #endif 78 79 /* Don't default to pcc-struct-return, we want to retain compatibility with 80 older gcc versions AND pcc-struct-return is nonreentrant. 81 (even though the SVR4 ABI for the i386 says that records and unions are 82 returned in memory). */ 83 84 #undef DEFAULT_PCC_STRUCT_RETURN 85 #define DEFAULT_PCC_STRUCT_RETURN 0 86 87 /* DragonFly sets the rounding precision of the FPU to 53 bits. Let the 88 compiler get the contents of <float.h> and std::numeric_limits correct. */ 89 #undef TARGET_96_ROUND_53_LONG_DOUBLE 90 #define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT) 91 92 /* Put all *tf routines in libgcc. */ 93 #undef LIBGCC2_HAS_TF_MODE 94 #define LIBGCC2_HAS_TF_MODE 1 95 #define LIBGCC2_TF_CEXT q 96 #define TF_SIZE 113 97 98 /* Static stack checking is supported by means of probes. */ 99 #define STACK_CHECK_STATIC_BUILTIN 1 100 101 /* Support for i386 has been removed from DragonFly for several releases */ 102 #define SUBTARGET32_DEFAULT_CPU "i486" 103 104 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack 105 106