1 /* Definitions for Intel 386 running FreeBSD with ELF format 2 Copyright (C) 1996-2021 Free Software Foundation, Inc. 3 Contributed by Eric Youngdale. 4 Modified for stabs-in-ELF by H.J. Lu. 5 Adapted from GNU/Linux version by John Polstra. 6 Continued development by David O'Brien <obrien@freebsd.org> 7 8 This file is part of GCC. 9 10 GCC is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GCC is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GCC; see the file COPYING3. If not see 22 <http://www.gnu.org/licenses/>. */ 23 24 25 /* Override the default comment-starter of "/". */ 26 #undef ASM_COMMENT_START 27 #define ASM_COMMENT_START "#" 28 29 #undef ASM_APP_ON 30 #define ASM_APP_ON "#APP\n" 31 32 #undef ASM_APP_OFF 33 #define ASM_APP_OFF "#NO_APP\n" 34 35 #undef DBX_REGISTER_NUMBER 36 #define DBX_REGISTER_NUMBER(n) \ 37 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 38 39 #undef NO_PROFILE_COUNTERS 40 #define NO_PROFILE_COUNTERS 1 41 42 /* Tell final.c that we don't need a label passed to mcount. */ 43 44 #undef MCOUNT_NAME 45 #define MCOUNT_NAME ".mcount" 46 47 /* Make gcc agree with <machine/ansi.h>. */ 48 49 #undef SIZE_TYPE 50 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") 51 52 #undef PTRDIFF_TYPE 53 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 54 55 #undef WCHAR_TYPE_SIZE 56 #define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD) 57 58 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ 59 #define SUBTARGET_EXTRA_SPECS \ 60 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER } 61 62 /* Use the STARTFILE_SPEC from config/freebsd-spec.h. */ 63 64 #undef STARTFILE_SPEC 65 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC 66 67 /* Use the ENDFILE_SPEC from config/freebsd-spec.h. */ 68 69 #undef ENDFILE_SPEC 70 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC 71 72 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support 73 for the special GCC options -static and -shared, which allow us to 74 link things in one of these three modes by applying the appropriate 75 combinations of options at link-time. 76 77 When the -shared link option is used a final link is not being 78 done. */ 79 80 #undef LINK_SPEC 81 #define LINK_SPEC "\ 82 %{p:%nconsider using '-pg' instead of '-p' with gprof(1)} \ 83 %{v:-V} \ 84 %{assert*} %{R*} %{rpath*} %{defsym*} \ 85 %{shared:-Bshareable %{h*} %{soname*}} \ 86 %{!shared: \ 87 %{!static: \ 88 %{rdynamic:-export-dynamic} \ 89 -dynamic-linker %(fbsd_dynamic_linker) } \ 90 %{static:-Bstatic}} \ 91 %{symbolic:-Bsymbolic}" 92 93 /* A C statement to output to the stdio stream FILE an assembler 94 command to advance the location counter to a multiple of 1<<LOG 95 bytes if it is within MAX_SKIP bytes. */ 96 97 #define SUBALIGN_LOG 3 98 99 /* Don't default to pcc-struct-return, we want to retain compatibility with 100 older gcc versions AND pcc-struct-return is nonreentrant. 101 (even though the SVR4 ABI for the i386 says that records and unions are 102 returned in memory). */ 103 104 #undef DEFAULT_PCC_STRUCT_RETURN 105 #define DEFAULT_PCC_STRUCT_RETURN 0 106 107 /* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the 108 compiler get the contents of <float.h> and std::numeric_limits correct. */ 109 #undef TARGET_96_ROUND_53_LONG_DOUBLE 110 #define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT) 111 112 /* Static stack checking is supported by means of probes. */ 113 #define STACK_CHECK_STATIC_BUILTIN 1 114 115 #define SUBTARGET32_DEFAULT_CPU "i586" 116 117 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack 118 119 /* Define the shadow offsets for asan. */ 120 #undef SUBTARGET_SHADOW_OFFSET 121 #define SUBTARGET_SHADOW_OFFSET \ 122 (TARGET_LP64 ? HOST_WIDE_INT_1 << 46 : HOST_WIDE_INT_1 << 30) 123