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.
5 This file is part of GNU CC.
7 GNU CC 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 GNU CC 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 GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* FreeBSD needs the platform name (sparc64) defined.
22 Emacs needs to know if the arch is 64 or 32-bits. */
24 #undef CPP_CPU64_DEFAULT_SPEC
25 #define CPP_CPU64_DEFAULT_SPEC \
26 "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__arch64__"
28 #define LINK_SPEC "%(link_arch) \
29 %{!mno-relax:%{!r:-relax}} \
30 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
32 %{assert*} %{R*} %{rpath*} %{defsym*} \
33 %{shared:-Bshareable %{h*} %{soname*}} \
34 %{symbolic:-Bsymbolic} \
37 %{rdynamic:-export-dynamic} \
38 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
42 /************************[ Target stuff ]***********************************/
44 /* Define the actual types of some ANSI-mandated types.
45 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
46 c-common.c, and config/<arch>/<arch>.h. */
48 /* Earlier headers may get this wrong for FreeBSD.
49 We use the GCC defaults instead. */
52 #undef WCHAR_TYPE_SIZE
53 #define WCHAR_TYPE_SIZE 32
55 /* Define for support of TFmode long double.
56 SPARC ABI says that long double is 4 words. */
57 #undef LONG_DOUBLE_TYPE_SIZE
58 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
60 /* Constant which presents upper bound of the above value. */
61 #undef MAX_LONG_DOUBLE_TYPE_SIZE
62 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
64 /* Define this to set long double type size to use in libgcc2.c, which can
65 not depend on target_flags. */
66 #if defined(__arch64__) || defined(__LONG_DOUBLE_128__)
67 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
69 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
72 /* Definitions for 64-bit SPARC running systems with ELF. */
74 #undef SUBTARGET_SWITCHES
75 #define SUBTARGET_SWITCHES \
76 {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
77 {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
80 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/sparc64 ELF)");
85 /* A 64 bit v9 compiler with stack-bias,
86 in a Medium/mid code model environment. */
89 #define TARGET_DEFAULT \
90 (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
91 + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
92 + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)
94 /* The default code model. */
95 #undef SPARC_DEFAULT_CMODEL
96 #define SPARC_DEFAULT_CMODEL CM_MEDLOW
98 #define TRANSFER_FROM_TRAMPOLINE \
99 static int need_enable_exec_stack; \
100 static void check_enabling(void) __attribute__ ((constructor)); \
101 static void check_enabling(void) \
103 extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
105 size_t len = sizeof(prot); \
107 sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \
109 need_enable_exec_stack = 1; \
111 extern void __enable_execute_stack (void *); \
112 void __enable_execute_stack (void *addr) \
114 if (!need_enable_exec_stack) \
117 /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
118 if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \
119 perror ("mprotect of trampoline code"); \
124 /************************[ Assembler stuff ]********************************/
126 #undef LOCAL_LABEL_PREFIX
127 #define LOCAL_LABEL_PREFIX "."
130 /* This is how to output a reference to an internal numbered label where
131 PREFIX is the class of label and NUM is the number within the class. */
133 #undef ASM_OUTPUT_INTERNAL_LABELREF
134 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \
135 fprintf (FILE, ".L%s%d", PREFIX, NUM)
138 /* This is how to store into the string LABEL
139 the symbol_ref name of an internal numbered label where
140 PREFIX is the class of label and NUM is the number within the class.
141 This is suitable for output with `assemble_name'. */
143 #undef ASM_GENERATE_INTERNAL_LABEL
144 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
145 sprintf (LABEL, "*.L%s%d", PREFIX, NUM)
148 /************************[ Debugger stuff ]*********************************/
150 /* This is the char to use for continuation (in case we need to turn
151 continuation back on). */
153 #undef DBX_CONTIN_CHAR
154 #define DBX_CONTIN_CHAR '?'
158 /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets.
159 Obviously the Dwarf2 folks havn't tried to actually build systems
160 with their spec. On a 64-bit system, only 64-bit relocs become
161 RELATIVE relocations. */
163 /* #define DWARF_OFFSET_SIZE PTR_SIZE */
166 #define ENDFILE_SPEC \
167 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}" \
170 /* We use GNU ld so undefine this so that attribute((init_priority)) works. */
171 #undef CTORS_SECTION_ASM_OP
172 #undef DTORS_SECTION_ASM_OP