freebsd.h revision 117404
1/* Definitions for Sun SPARC64 running FreeBSD using the ELF format 2 Copyright (C) 2001, 2002 Free Software Foundation, Inc. 3 Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi. 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ 20 21/* $FreeBSD: head/contrib/gcc/config/sparc/freebsd.h 117404 2003-07-11 04:00:23Z kan $ */ 22 23/* FreeBSD needs the platform name (sparc64) defined. 24 Emacs needs to know if the arch is 64 or 32-bits. */ 25 26#undef CPP_CPU64_DEFAULT_SPEC 27#define CPP_CPU64_DEFAULT_SPEC \ 28 "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__sparc__ -D__arch64__" 29 30/* Because we include sparc/sysv4.h. */ 31#undef CPP_PREDEFINES 32/* Do not define it here, we now use TARGET_OS_CPP_BUILTINS. */ 33 34#define LINK_SPEC "%(link_arch) \ 35 %{!mno-relax:%{!r:-relax}} \ 36 %{p:%e`-p' not supported; use `-pg' and gprof(1)} \ 37 %{Wl,*:%*} \ 38 %{assert*} %{R*} %{rpath*} %{defsym*} \ 39 %{shared:-Bshareable %{h*} %{soname*}} \ 40 %{symbolic:-Bsymbolic} \ 41 %{!shared: \ 42 %{!static: \ 43 %{rdynamic:-export-dynamic} \ 44 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \ 45 %{static:-Bstatic}}" 46 47 48/************************[ Target stuff ]***********************************/ 49 50/* Define the actual types of some ANSI-mandated types. 51 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c, 52 c-common.c, and config/<arch>/<arch>.h. */ 53 54/* Earlier headers may get this wrong for FreeBSD. 55 We use the GCC defaults instead. */ 56#undef WCHAR_TYPE 57 58#undef WCHAR_TYPE_SIZE 59#define WCHAR_TYPE_SIZE 32 60 61/* Define for support of TFmode long double. 62 SPARC ABI says that long double is 4 words. */ 63#undef LONG_DOUBLE_TYPE_SIZE 64#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) 65 66/* Constant which presents upper bound of the above value. */ 67#undef MAX_LONG_DOUBLE_TYPE_SIZE 68#define MAX_LONG_DOUBLE_TYPE_SIZE 128 69 70/* Define this to set long double type size to use in libgcc2.c, which can 71 not depend on target_flags. */ 72#if defined(__arch64__) || defined(__LONG_DOUBLE_128__) 73#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 74#else 75#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 76#endif 77 78/* Definitions for 64-bit SPARC running systems with ELF. */ 79 80#undef SUBTARGET_SWITCHES 81#define SUBTARGET_SWITCHES \ 82 {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \ 83 {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") }, 84 85#undef TARGET_VERSION 86#define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)"); 87 88#define TARGET_ELF 1 89 90/* XXX */ 91/* A 64 bit v9 compiler with stack-bias, 92 in a Medium/mid code model environment. */ 93 94#undef TARGET_DEFAULT 95#define TARGET_DEFAULT \ 96 (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \ 97 + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \ 98 + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */) 99 100/* The default code model. */ 101#undef SPARC_DEFAULT_CMODEL 102#define SPARC_DEFAULT_CMODEL CM_MEDLOW 103 104#define TRANSFER_FROM_TRAMPOLINE \ 105 static int need_enable_exec_stack; \ 106 static void check_enabling(void) __attribute__ ((constructor)); \ 107 static void check_enabling(void) \ 108 { \ 109 extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\ 110 int prot = 0; \ 111 size_t len = sizeof(prot); \ 112 \ 113 sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \ 114 if (prot != 7) \ 115 need_enable_exec_stack = 1; \ 116 } \ 117 extern void __enable_execute_stack (void *); \ 118 void __enable_execute_stack (void *addr) \ 119 { \ 120 if (!need_enable_exec_stack) \ 121 return; \ 122 else { \ 123 /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ 124 if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \ 125 perror ("mprotect of trampoline code"); \ 126 } \ 127 } 128 129 130/************************[ Assembler stuff ]********************************/ 131 132#undef LOCAL_LABEL_PREFIX 133#define LOCAL_LABEL_PREFIX "." 134 135/* XXX2 */ 136/* This is how to output a definition of an internal numbered label where 137 PREFIX is the class of label and NUM is the number within the class. */ 138 139#undef ASM_OUTPUT_INTERNAL_LABEL 140#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ 141 fprintf (FILE, ".L%s%d:\n", PREFIX, NUM) 142 143/* XXX2 */ 144/* This is how to output a reference to an internal numbered label where 145 PREFIX is the class of label and NUM is the number within the class. */ 146 147#undef ASM_OUTPUT_INTERNAL_LABELREF 148#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \ 149 fprintf (FILE, ".L%s%d", PREFIX, NUM) 150 151/* XXX2 */ 152/* This is how to store into the string LABEL 153 the symbol_ref name of an internal numbered label where 154 PREFIX is the class of label and NUM is the number within the class. 155 This is suitable for output with `assemble_name'. */ 156 157#undef ASM_GENERATE_INTERNAL_LABEL 158#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ 159 sprintf (LABEL, "*.L%s%d", PREFIX, NUM) 160 161 162/************************[ Debugger stuff ]*********************************/ 163 164/* This is the char to use for continuation (in case we need to turn 165 continuation back on). */ 166 167#undef DBX_CONTIN_CHAR 168#define DBX_CONTIN_CHAR '?' 169 170/* DWARF bits. */ 171 172/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. 173 Obviously the Dwarf2 folks havn't tried to actually build systems 174 with their spec. On a 64-bit system, only 64-bit relocs become 175 RELATIVE relocations. */ 176 177/* #define DWARF_OFFSET_SIZE PTR_SIZE */ 178 179#undef ENDFILE_SPEC 180#define ENDFILE_SPEC \ 181 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" \ 182 FBSD_ENDFILE_SPEC 183 184/* We use GNU ld so undefine this so that attribute((init_priority)) works. */ 185#undef CTORS_SECTION_ASM_OP 186#undef DTORS_SECTION_ASM_OP 187