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1 | /* Definitions for 64-bit SPARC running Linux-based GNU systems with ELF. | |
2 | Copyright 1996, 1997 Free Software Foundation, Inc. | |
3 | Contributed by David S. Miller (davem@caip.rutgers.edu) | |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
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) | |
10 | any later version. | |
11 | ||
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. | |
16 | ||
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, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* ??? bi-architecture support will require changes to the linker | |
23 | related specs, among perhaps other things (multilibs). */ | |
24 | /* #define SPARC_BI_ARCH */ | |
25 | ||
26 | #define LINUX_DEFAULT_ELF | |
27 | ||
28 | /* Don't assume anything about the header files. */ | |
29 | #define NO_IMPLICIT_EXTERN_C | |
30 | ||
31 | #undef HAVE_ATEXIT | |
32 | #define HAVE_ATEXIT | |
33 | ||
34 | #include <sparc/sysv4.h> | |
35 | ||
36 | #undef MD_EXEC_PREFIX | |
37 | #undef MD_STARTFILE_PREFIX | |
38 | ||
39 | /* Output at beginning of assembler file. */ | |
40 | /* The .file command should always begin the output. */ | |
41 | #undef ASM_FILE_START | |
42 | #define ASM_FILE_START(FILE) \ | |
43 | do { \ | |
44 | output_file_directive (FILE, main_input_filename); \ | |
45 | fprintf (FILE, "\t.version\t\"01.01\"\n"); \ | |
46 | } while (0) | |
47 | ||
48 | #undef ASM_CPU_DEFAULT_SPEC | |
49 | #define ASM_CPU_DEFAULT_SPEC "-Av9a" | |
50 | ||
51 | #undef LIBGCC_SPEC | |
52 | #define LIBGCC_SPEC \ | |
53 | "%{!shared:-lgcc}" | |
54 | ||
55 | /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add | |
56 | the GNU/Linux magical crtbegin.o file (see crtstuff.c) which | |
57 | provides part of the support for getting C++ file-scope static | |
58 | object constructed before entering `main'. */ | |
59 | ||
60 | #undef STARTFILE_SPEC | |
61 | #define STARTFILE_SPEC \ | |
62 | "%{!shared: \ | |
63 | %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\ | |
64 | crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" | |
65 | ||
66 | /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on | |
67 | the GNU/Linux magical crtend.o file (see crtstuff.c) which | |
68 | provides part of the support for getting C++ file-scope static | |
69 | object constructed before entering `main', followed by a normal | |
70 | GNU/Linux "finalizer" file, `crtn.o'. */ | |
71 | ||
72 | #undef ENDFILE_SPEC | |
73 | #define ENDFILE_SPEC \ | |
74 | "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" | |
75 | ||
76 | #undef TARGET_VERSION | |
77 | #define TARGET_VERSION fprintf (stderr, " (sparc64 GNU/Linux with ELF)"); | |
78 | ||
79 | /* A 64 bit v9 compiler with stack-bias, | |
80 | in a Medium/Anywhere code model environment. */ | |
81 | ||
82 | #undef TARGET_DEFAULT | |
83 | #define TARGET_DEFAULT \ | |
84 | (MASK_V9 + MASK_PTR64 + MASK_64BIT /* + MASK_HARD_QUAD */ \ | |
85 | + MASK_STACK_BIAS + MASK_APP_REGS + MASK_EPILOGUE + MASK_FPU) | |
86 | ||
87 | /* The default code model. */ | |
88 | #undef SPARC_DEFAULT_CMODEL | |
89 | #define SPARC_DEFAULT_CMODEL CM_MEDANY | |
90 | ||
91 | #undef SIZE_TYPE | |
92 | #define SIZE_TYPE "long long unsigned int" | |
93 | ||
94 | #undef PTRDIFF_TYPE | |
95 | #define PTRDIFF_TYPE "long long int" | |
96 | ||
97 | #undef WCHAR_TYPE | |
98 | #define WCHAR_TYPE "long int" | |
99 | ||
100 | #undef WCHAR_TYPE_SIZE | |
101 | #define WCHAR_TYPE_SIZE BITS_PER_WORD | |
102 | ||
103 | #undef LONG_DOUBLE_TYPE_SIZE | |
104 | #define LONG_DOUBLE_TYPE_SIZE 128 | |
105 | ||
106 | #undef CPP_PREDEFINES | |
107 | #define CPP_PREDEFINES "-D__ELF__ -Dunix -Dsparc -Dlinux -Asystem(unix) -Asystem(posix)" | |
108 | ||
109 | #undef CPP_SUBTARGET_SPEC | |
110 | #define CPP_SUBTARGET_SPEC "\ | |
111 | %{fPIC:-D__PIC__ -D__pic__} \ | |
112 | %{fpic:-D__PIC__ -D__pic__} \ | |
113 | %{posix:-D_POSIX_SOURCE} \ | |
114 | " | |
115 | /* We no longer link with libc_p.a or libg.a by default. If you | |
116 | want to profile or debug the GNU/Linux C library, please add | |
117 | -lc_p or -ggdb to LDFLAGS at the link time, respectively. */ | |
118 | #undef LIB_SPEC | |
119 | #define LIB_SPEC \ | |
120 | "%{!shared: %{mieee-fp:-lieee} %{p:-lgmon} %{pg:-lgmon} \ | |
121 | %{!ggdb:-lc} %{ggdb:-lg}}" | |
122 | ||
123 | /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support | |
124 | for the special GCC options -static and -shared, which allow us to | |
125 | link things in one of these three modes by applying the appropriate | |
126 | combinations of options at link-time. We like to support here for | |
127 | as many of the other GNU linker options as possible. But I don't | |
128 | have the time to search for those flags. I am sure how to add | |
129 | support for -soname shared_object_name. H.J. | |
130 | ||
131 | I took out %{v:%{!V:-V}}. It is too much :-(. They can use | |
132 | -Wl,-V. | |
133 | ||
134 | When the -shared link option is used a final link is not being | |
135 | done. */ | |
136 | ||
137 | /* If ELF is the default format, we should not use /lib/elf. */ | |
138 | ||
139 | #undef LINK_SPEC | |
140 | #define LINK_SPEC "-m elf64_sparc -Y P,/usr/lib %{shared:-shared} \ | |
141 | %{!shared: \ | |
142 | %{!ibcs: \ | |
143 | %{!static: \ | |
144 | %{rdynamic:-export-dynamic} \ | |
145 | %{!dynamic-linker:-dynamic-linker /lib/ld-linux64.so.2}} \ | |
146 | %{static:-static}}} \ | |
147 | %{mlittle-endian:-EL} \ | |
148 | " | |
149 | ||
150 | /* The sun bundled assembler doesn't accept -Yd, (and neither does gas). | |
151 | It's safe to pass -s always, even if -g is not used. */ | |
152 | #undef ASM_SPEC | |
153 | #define ASM_SPEC "\ | |
154 | %{V} \ | |
155 | %{v:%{!V:-V}} \ | |
156 | %{!Qn:-Qy} \ | |
157 | %{n} \ | |
158 | %{T} \ | |
159 | %{Ym,*} \ | |
160 | %{Wa,*:%*} \ | |
161 | -s %{fpic:-K PIC} %{fPIC:-K PIC} \ | |
162 | %{mlittle-endian:-EL} \ | |
163 | %(asm_cpu) %(asm_arch) \ | |
164 | " | |
165 | ||
166 | /* Same as sparc.h */ | |
167 | #undef DBX_REGISTER_NUMBER | |
168 | #define DBX_REGISTER_NUMBER(REGNO) (REGNO) | |
169 | ||
170 | /* System V Release 4 uses DWARF debugging info. Buf DWARF1 doesn't do | |
171 | 64-bit anything, so we use DWARF2. */ | |
172 | ||
173 | #undef DWARF2_DEBUGGING_INFO | |
174 | #undef DWARF_DEBUGGING_INFO | |
175 | #undef DBX_DEBUGGING_INFO | |
176 | #define DWARF2_DEBUGGING_INFO | |
177 | #define DBX_DEBUGGING_INFO | |
178 | ||
179 | #undef PREFERRED_DEBUGGING_TYPE | |
180 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
181 | ||
182 | #undef ASM_OUTPUT_ALIGNED_LOCAL | |
183 | #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ | |
184 | do { \ | |
185 | fputs ("\t.local\t", (FILE)); \ | |
186 | assemble_name ((FILE), (NAME)); \ | |
187 | putc ('\n', (FILE)); \ | |
188 | ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \ | |
189 | } while (0) | |
190 | ||
191 | #undef COMMON_ASM_OP | |
192 | #define COMMON_ASM_OP "\t.common" | |
193 | ||
194 | /* This is how to output a definition of an internal numbered label where | |
195 | PREFIX is the class of label and NUM is the number within the class. */ | |
196 | ||
197 | #undef ASM_OUTPUT_INTERNAL_LABEL | |
198 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ | |
199 | fprintf (FILE, ".L%s%d:\n", PREFIX, NUM) | |
200 | ||
201 | /* This is how to output a reference to an internal numbered label where | |
202 | PREFIX is the class of label and NUM is the number within the class. */ | |
203 | ||
204 | #undef ASM_OUTPUT_INTERNAL_LABELREF | |
205 | #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \ | |
206 | fprintf (FILE, ".L%s%d", PREFIX, NUM) | |
207 | ||
208 | /* This is how to store into the string LABEL | |
209 | the symbol_ref name of an internal numbered label where | |
210 | PREFIX is the class of label and NUM is the number within the class. | |
211 | This is suitable for output with `assemble_name'. */ | |
212 | ||
213 | #undef ASM_GENERATE_INTERNAL_LABEL | |
214 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ | |
215 | sprintf (LABEL, "*.L%s%d", PREFIX, NUM) | |
216 | ||
217 | /* Stabs doesn't use this, and it confuses a simulator. */ | |
218 | /* ??? Need to see what DWARF needs, if anything. */ | |
219 | #undef ASM_IDENTIFY_GCC | |
220 | #define ASM_IDENTIFY_GCC(FILE) | |
221 | ||
222 | /* Define the names of various pseudo-ops used by the Sparc/svr4 assembler. | |
223 | ??? If ints are 64 bits then UNALIGNED_INT_ASM_OP (defined elsewhere) is | |
224 | misnamed. These should all refer to explicit sizes (half/word/xword?), | |
225 | anything other than short/int/long/etc. */ | |
226 | ||
227 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".uaxword" | |
228 | ||
229 | /* DWARF bits. */ | |
230 | ||
231 | /* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. | |
232 | Obviously the Dwarf2 folks havn't tried to actually build systems | |
233 | with their spec. On a 64-bit system, only 64-bit relocs become | |
234 | RELATIVE relocations. */ | |
235 | ||
236 | /* #define DWARF_OFFSET_SIZE PTR_SIZE */ |