1 /* Definitions for Sun SPARC64 running FreeBSD using the ELF format
2 Copyright (C) 2001, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
3 Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
24 #undef SUBTARGET_EXTRA_SPECS
25 #define SUBTARGET_EXTRA_SPECS \
26 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
28 /* FreeBSD needs the platform name (sparc64) defined.
29 Emacs needs to know if the arch is 64 or 32-bits.
30 This also selects which targets are available via -mcpu. */
32 #undef FBSD_TARGET_CPU_CPP_BUILTINS
33 #define FBSD_TARGET_CPU_CPP_BUILTINS() \
36 builtin_define ("__LP64__"); \
37 builtin_define ("__sparc64__"); \
38 builtin_define ("__sparc_v9__"); \
39 builtin_define ("__sparcv9"); \
40 builtin_define ("__sparc__"); \
41 builtin_define ("__arch64__"); \
45 #define LINK_SPEC "%(link_arch) \
46 %{!mno-relax:%{!r:-relax}} \
47 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
48 %{assert*} %{R*} %{rpath*} %{defsym*} \
49 %{shared:-Bshareable %{h*} %{soname*}} \
50 %{symbolic:-Bsymbolic} \
53 %{rdynamic:-export-dynamic} \
54 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
58 /************************[ Target stuff ]***********************************/
60 /* Define the actual types of some ANSI-mandated types.
61 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
62 c-common.c, and config/<arch>/<arch>.h. */
64 /* Earlier headers may get this wrong for FreeBSD.
65 We use the GCC defaults instead. */
68 #undef WCHAR_TYPE_SIZE
69 #define WCHAR_TYPE_SIZE 32
71 /* Define for support of TFmode long double.
72 SPARC ABI says that long double is 4 words. */
73 #undef LONG_DOUBLE_TYPE_SIZE
74 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
76 /* Define this to set long double type size to use in libgcc2.c, which can
77 not depend on target_flags. */
78 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
79 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
81 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
84 /* Definitions for 64-bit SPARC running systems with ELF. */
87 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)");
92 /* A 64 bit v9 compiler with stack-bias,
93 in a Medium/mid code model environment. */
96 #define TARGET_DEFAULT \
97 (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
98 + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
99 + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
101 /* The default code model. */
102 #undef SPARC_DEFAULT_CMODEL
103 #define SPARC_DEFAULT_CMODEL CM_MEDLOW
105 #define ENABLE_EXECUTE_STACK \
106 static int need_enable_exec_stack; \
107 static void check_enabling(void) __attribute__ ((constructor)); \
108 static void check_enabling(void) \
110 extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
112 size_t len = sizeof(prot); \
114 sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \
116 need_enable_exec_stack = 1; \
118 extern void __enable_execute_stack (void *); \
119 void __enable_execute_stack (void *addr) \
121 if (!need_enable_exec_stack) \
124 /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
125 if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \
126 perror ("mprotect of trampoline code"); \
131 /************************[ Assembler stuff ]********************************/
133 #undef LOCAL_LABEL_PREFIX
134 #define LOCAL_LABEL_PREFIX "."
137 /* This is how to store into the string LABEL
138 the symbol_ref name of an internal numbered label where
139 PREFIX is the class of label and NUM is the number within the class.
140 This is suitable for output with `assemble_name'. */
142 #undef ASM_GENERATE_INTERNAL_LABEL
143 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
144 sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
147 /************************[ Debugger stuff ]*********************************/
149 /* This is the char to use for continuation (in case we need to turn
150 continuation back on). */
152 #undef DBX_CONTIN_CHAR
153 #define DBX_CONTIN_CHAR '?'
157 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
158 Obviously the Dwarf2 folks havn't tried to actually build systems
159 with their spec. On a 64-bit system, only 64-bit relocs become
160 RELATIVE relocations. */
162 /* #define DWARF_OFFSET_SIZE PTR_SIZE */
165 #undef TARGET_SUN_TLS
166 #undef TARGET_GNU_TLS
167 #define TARGET_SUN_TLS 0
168 #define TARGET_GNU_TLS 1
172 #define ENDFILE_SPEC \
173 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} " \
176 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */
177 #undef CTORS_SECTION_ASM_OP
178 #undef DTORS_SECTION_ASM_OP