1 /* Definitions for Sun SPARC64 running FreeBSD using the ELF format
2 Copyright (C) 2001, 2002, 2004 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #undef SUBTARGET_EXTRA_SPECS
24 #define SUBTARGET_EXTRA_SPECS \
25 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
27 /* FreeBSD needs the platform name (sparc64) defined.
28 Emacs needs to know if the arch is 64 or 32-bits. */
30 #undef CPP_CPU64_DEFAULT_SPEC
31 #define CPP_CPU64_DEFAULT_SPEC \
32 "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__sparc__ -D__arch64__"
34 #undef FBSD_TARGET_CPU_CPP_BUILTINS
35 #define FBSD_TARGET_CPU_CPP_BUILTINS() \
38 builtin_define ("__LP64__"); \
42 #define LINK_SPEC "%(link_arch) \
43 %{!mno-relax:%{!r:-relax}} \
44 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
46 %{assert*} %{R*} %{rpath*} %{defsym*} \
47 %{shared:-Bshareable %{h*} %{soname*}} \
48 %{symbolic:-Bsymbolic} \
51 %{rdynamic:-export-dynamic} \
52 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
56 /************************[ Target stuff ]***********************************/
58 /* Define the actual types of some ANSI-mandated types.
59 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
60 c-common.c, and config/<arch>/<arch>.h. */
62 /* Earlier headers may get this wrong for FreeBSD.
63 We use the GCC defaults instead. */
66 #undef WCHAR_TYPE_SIZE
67 #define WCHAR_TYPE_SIZE 32
69 /* Define for support of TFmode long double.
70 SPARC ABI says that long double is 4 words. */
71 #undef LONG_DOUBLE_TYPE_SIZE
72 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
74 /* Constant which presents upper bound of the above value. */
75 #undef MAX_LONG_DOUBLE_TYPE_SIZE
76 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
78 /* Define this to set long double type size to use in libgcc2.c, which can
79 not depend on target_flags. */
80 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
81 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
83 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
86 /* Definitions for 64-bit SPARC running systems with ELF. */
88 #undef SUBTARGET_SWITCHES
89 #define SUBTARGET_SWITCHES \
90 {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
91 {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
94 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)");
99 /* A 64 bit v9 compiler with stack-bias,
100 in a Medium/mid code model environment. */
102 #undef TARGET_DEFAULT
103 #define TARGET_DEFAULT \
104 (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
105 + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
106 + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
108 /* The default code model. */
109 #undef SPARC_DEFAULT_CMODEL
110 #define SPARC_DEFAULT_CMODEL CM_MEDLOW
112 #define ENABLE_EXECUTE_STACK \
113 static int need_enable_exec_stack; \
114 static void check_enabling(void) __attribute__ ((constructor)); \
115 static void check_enabling(void) \
117 extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
119 size_t len = sizeof(prot); \
121 sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \
123 need_enable_exec_stack = 1; \
125 extern void __enable_execute_stack (void *); \
126 void __enable_execute_stack (void *addr) \
128 if (!need_enable_exec_stack) \
131 /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
132 if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \
133 perror ("mprotect of trampoline code"); \
138 /************************[ Assembler stuff ]********************************/
140 #undef LOCAL_LABEL_PREFIX
141 #define LOCAL_LABEL_PREFIX "."
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. */
147 #undef ASM_OUTPUT_INTERNAL_LABELREF
148 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \
149 fprintf (FILE, ".L%s%d", PREFIX, NUM)
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'. */
157 #undef ASM_GENERATE_INTERNAL_LABEL
158 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
159 sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))
162 /************************[ Debugger stuff ]*********************************/
164 /* This is the char to use for continuation (in case we need to turn
165 continuation back on). */
167 #undef DBX_CONTIN_CHAR
168 #define DBX_CONTIN_CHAR '?'
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. */
177 /* #define DWARF_OFFSET_SIZE PTR_SIZE */
180 #define ENDFILE_SPEC \
181 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" \
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