Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/rs6000/aix.h @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
rev | line source |
---|---|
0 | 1 /* Definitions of target machine for GNU compiler, |
2 for IBM RS/6000 POWER running AIX. | |
131 | 3 Copyright (C) 2000-2018 Free Software Foundation, Inc. |
0 | 4 |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published | |
9 by the Free Software Foundation; either version 3, or (at your | |
10 option) any later version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 License for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 /* Yes! We are AIX! */ | |
22 #define DEFAULT_ABI ABI_AIX | |
23 #undef TARGET_AIX | |
24 #define TARGET_AIX 1 | |
25 | |
131 | 26 /* System headers are not C++-aware. */ |
27 #define SYSTEM_IMPLICIT_EXTERN_C 1 | |
28 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
29 /* Linux64.h wants to redefine TARGET_AIX based on -m64, but it can't be used |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
30 in the #if conditional in options-default.h, so provide another macro. */ |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
31 #undef TARGET_AIX_OS |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
32 #define TARGET_AIX_OS 1 |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
33 |
0 | 34 /* AIX always has a TOC. */ |
35 #define TARGET_NO_TOC 0 | |
36 #define TARGET_TOC 1 | |
37 #define FIXED_R2 1 | |
38 | |
39 /* AIX allows r13 to be used in 32-bit mode. */ | |
40 #define FIXED_R13 0 | |
41 | |
42 /* 32-bit and 64-bit AIX stack boundary is 128. */ | |
43 #undef STACK_BOUNDARY | |
44 #define STACK_BOUNDARY 128 | |
45 | |
111 | 46 /* Offset within stack frame to start allocating local variables at. |
47 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
48 first local allocated. Otherwise, it is the offset to the BEGINNING | |
49 of the first local allocated. | |
50 | |
51 On the RS/6000, the frame pointer is the same as the stack pointer, | |
52 except for dynamic allocations. So we start after the fixed area and | |
53 outgoing parameter area. | |
54 | |
55 If the function uses dynamic stack space (CALLS_ALLOCA is set), that | |
56 space needs to be aligned to STACK_BOUNDARY, i.e. the sum of the | |
57 sizes of the fixed area and the parameter area must be a multiple of | |
58 STACK_BOUNDARY. */ | |
59 | |
60 #undef RS6000_STARTING_FRAME_OFFSET | |
61 #define RS6000_STARTING_FRAME_OFFSET \ | |
62 (cfun->calls_alloca \ | |
63 ? RS6000_ALIGN (crtl->outgoing_args_size + RS6000_SAVE_AREA, 16) \ | |
64 : (RS6000_ALIGN (crtl->outgoing_args_size, 16) + RS6000_SAVE_AREA)) | |
65 | |
66 /* Offset from the stack pointer register to an item dynamically | |
67 allocated on the stack, e.g., by `alloca'. | |
68 | |
69 The default value for this macro is `STACK_POINTER_OFFSET' plus the | |
70 length of the outgoing arguments. The default is correct for most | |
71 machines. See `function.c' for details. | |
72 | |
73 This value must be a multiple of STACK_BOUNDARY (hard coded in | |
74 `emit-rtl.c'). */ | |
75 #undef STACK_DYNAMIC_OFFSET | |
76 #define STACK_DYNAMIC_OFFSET(FUNDECL) \ | |
131 | 77 RS6000_ALIGN (crtl->outgoing_args_size.to_constant () \ |
78 + STACK_POINTER_OFFSET, 16) | |
111 | 79 |
0 | 80 #undef TARGET_IEEEQUAD |
81 #define TARGET_IEEEQUAD 0 | |
82 | |
111 | 83 #undef TARGET_IEEEQUAD_DEFAULT |
84 #define TARGET_IEEEQUAD_DEFAULT 0 | |
85 | |
0 | 86 /* The AIX linker will discard static constructors in object files before |
87 collect has a chance to see them, so scan the object files directly. */ | |
88 #define COLLECT_EXPORT_LIST | |
89 | |
111 | 90 /* On AIX, initialisers specified with -binitfini are called in breadth-first |
91 order. | |
92 e.g. if a.out depends on lib1.so, the init function for a.out is called before | |
93 the init function for lib1.so. | |
94 | |
95 To ensure global C++ constructors in linked libraries are run before global | |
96 C++ constructors from the current module, there is additional symbol scanning | |
97 logic in collect2. | |
98 | |
99 The global initialiser/finaliser functions are named __GLOBAL_AIXI_{libname} | |
100 and __GLOBAL_AIXD_{libname} and are exported from each shared library. | |
101 | |
102 collect2 will detect these symbols when they exist in shared libraries that | |
103 the current program is being linked against. All such initiliser functions | |
104 will be called prior to the constructors of the current program, and | |
105 finaliser functions called after destructors. | |
106 | |
107 Reference counting generated by collect2 will ensure that constructors are | |
108 only invoked once in the case of multiple dependencies on a library. | |
109 | |
110 -binitfini is still used in parallel to this solution. | |
111 This handles the case where a library is loaded through dlopen(), and also | |
112 handles the option -blazy. | |
113 */ | |
114 #define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \ | |
115 fprintf ((STREAM), "void %s() {\n\t%s();\n}\n", aix_shared_initname, (FUNC)) | |
116 #define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \ | |
117 fprintf ((STREAM), "void %s() {\n\t%s();\n}\n", aix_shared_fininame, (FUNC)) | |
118 | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
119 #if HAVE_AS_REF |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
120 /* Issue assembly directives that create a reference to the given DWARF table |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
121 identifier label from the current function section. This is defined to |
111 | 122 ensure we drag frame tables associated with needed function bodies in |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
123 a link with garbage collection activated. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
124 #define ASM_OUTPUT_DWARF_TABLE_REF rs6000_aix_asm_output_dwarf_table_ref |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
125 #endif |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
126 |
0 | 127 /* This is the only version of nm that collect2 can work with. */ |
128 #define REAL_NM_FILE_NAME "/usr/ucb/nm" | |
129 | |
130 #define USER_LABEL_PREFIX "" | |
131 | |
132 /* Don't turn -B into -L if the argument specifies a relative file name. */ | |
133 #define RELATIVE_PREFIX_NOT_LINKDIR | |
134 | |
135 /* Because of the above, we must have gcc search itself to find libgcc.a. */ | |
136 #define LINK_LIBGCC_SPECIAL_1 | |
137 | |
138 /* Names to predefine in the preprocessor for this target machine. */ | |
139 #define TARGET_OS_AIX_CPP_BUILTINS() \ | |
140 do \ | |
141 { \ | |
142 builtin_define ("_IBMR2"); \ | |
143 builtin_define ("_POWER"); \ | |
111 | 144 builtin_define ("__unix__"); \ |
0 | 145 builtin_define ("_AIX"); \ |
146 builtin_define ("_AIX32"); \ | |
147 builtin_define ("_AIX41"); \ | |
148 builtin_define ("_LONG_LONG"); \ | |
149 if (TARGET_LONG_DOUBLE_128) \ | |
150 builtin_define ("__LONGDOUBLE128"); \ | |
151 builtin_assert ("system=unix"); \ | |
152 builtin_assert ("system=aix"); \ | |
111 | 153 if (TARGET_64BIT) \ |
154 { \ | |
155 builtin_define ("__PPC__"); \ | |
156 builtin_define ("__PPC64__"); \ | |
157 builtin_define ("__powerpc__"); \ | |
158 builtin_define ("__powerpc64__"); \ | |
159 builtin_assert ("cpu=powerpc64"); \ | |
160 builtin_assert ("machine=powerpc64"); \ | |
161 } \ | |
162 else \ | |
163 { \ | |
164 builtin_define ("__PPC__"); \ | |
165 builtin_define ("__powerpc__"); \ | |
166 builtin_assert ("cpu=powerpc"); \ | |
167 builtin_assert ("machine=powerpc"); \ | |
168 } \ | |
0 | 169 } \ |
170 while (0) | |
171 | |
172 /* Define appropriate architecture macros for preprocessor depending on | |
173 target switches. */ | |
174 | |
175 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\ | |
176 %{ansi: -D_ANSI_C_SOURCE}" | |
177 | |
178 #define CC1_SPEC "%(cc1_cpu)" | |
179 | |
180 #undef ASM_DEFAULT_SPEC | |
181 #define ASM_DEFAULT_SPEC "" | |
182 | |
183 /* Tell the assembler to assume that all undefined names are external. | |
184 | |
185 Don't do this until the fixed IBM assembler is more generally available. | |
186 When this becomes permanently defined, the ASM_OUTPUT_EXTERNAL, | |
187 ASM_OUTPUT_EXTERNAL_LIBCALL, and RS6000_OUTPUT_BASENAME macros will no | |
188 longer be needed. Also, the extern declaration of mcount in | |
189 rs6000_xcoff_file_start will no longer be needed. */ | |
190 | |
191 /* #define ASM_SPEC "-u %(asm_cpu)" */ | |
192 | |
193 /* Default location of syscalls.exp under AIX */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
194 #define LINK_SYSCALLS_SPEC "-bI:%R/lib/syscalls.exp" |
0 | 195 |
196 /* Default location of libg.exp under AIX */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
197 #define LINK_LIBG_SPEC "-bexport:%R/usr/lib/libg.exp" |
0 | 198 |
199 /* Define the options for the binder: Start text at 512, align all segments | |
200 to 512 bytes, and warn if there is text relocation. | |
201 | |
202 The -bhalt:4 option supposedly changes the level at which ld will abort, | |
203 but it also suppresses warnings about multiply defined symbols and is | |
204 used by the AIX cc command. So we use it here. | |
205 | |
206 -bnodelcsect undoes a poor choice of default relating to multiply-defined | |
207 csects. See AIX documentation for more information about this. | |
208 | |
209 -bM:SRE tells the linker that the output file is Shared REusable. Note | |
210 that to actually build a shared library you will also need to specify an | |
211 export list with the -Wl,-bE option. */ | |
212 | |
213 #define LINK_SPEC "-T512 -H512 %{!r:-btextro} -bhalt:4 -bnodelcsect\ | |
214 %{static:-bnso %(link_syscalls) } \ | |
215 %{!shared:%{g*: %(link_libg) }} %{shared:-bM:SRE}" | |
216 | |
217 /* Profiled library versions are used by linking with special directories. */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
218 #define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
219 %{p:-L%R/lib/profiled -L%R/usr/lib/profiled} %{!shared:%{g*:-lg}} -lc" |
0 | 220 |
221 /* Static linking with shared libstdc++ requires libsupc++ as well. */ | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
222 #define LIBSTDCXX_STATIC "supc++" |
0 | 223 |
224 /* This now supports a natural alignment mode. */ | |
225 /* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */ | |
111 | 226 #define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \ |
0 | 227 ((TARGET_ALIGN_NATURAL == 0 \ |
111 | 228 && TYPE_MODE (strip_array_types (TYPE)) == DFmode) \ |
0 | 229 ? MIN ((COMPUTED), 32) \ |
230 : (COMPUTED)) | |
231 | |
232 /* AIX increases natural record alignment to doubleword if the first | |
233 field is an FP double while the FP fields remain word aligned. */ | |
234 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ | |
235 ((TREE_CODE (STRUCT) == RECORD_TYPE \ | |
236 || TREE_CODE (STRUCT) == UNION_TYPE \ | |
237 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
238 && TARGET_ALIGN_NATURAL == 0 \ | |
239 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
240 : MAX ((COMPUTED), (SPECIFIED))) | |
241 | |
242 /* The AIX ABI isn't explicit on whether aggregates smaller than a | |
243 word/doubleword should be padded upward or downward. One could | |
244 reasonably assume that they follow the normal rules for structure | |
245 layout treating the parameter area as any other block of memory, | |
246 then map the reg param area to registers, i.e., pad upward, which | |
247 is the way IBM Compilers for AIX behave. | |
248 Setting both of the following defines results in this behavior. */ | |
249 #define AGGREGATE_PADDING_FIXED 1 | |
250 #define AGGREGATES_PAD_UPWARD_ALWAYS 1 | |
251 | |
252 /* Specify padding for the last element of a block move between | |
253 registers and memory. FIRST is nonzero if this is the only | |
254 element. */ | |
255 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
111 | 256 (!(FIRST) ? PAD_UPWARD : targetm.calls.function_arg_padding (MODE, TYPE)) |
0 | 257 |
258 /* Indicate that jump tables go in the text section. */ | |
259 | |
260 #define JUMP_TABLES_IN_TEXT_SECTION 1 | |
261 | |
262 /* Define any extra SPECS that the compiler needs to generate. */ | |
263 #undef SUBTARGET_EXTRA_SPECS | |
264 #define SUBTARGET_EXTRA_SPECS \ | |
265 { "link_syscalls", LINK_SYSCALLS_SPEC }, \ | |
266 { "link_libg", LINK_LIBG_SPEC } | |
267 | |
268 #define PROFILE_HOOK(LABEL) output_profile_hook (LABEL) | |
269 | |
270 /* No version of AIX fully supports AltiVec or 64-bit instructions in | |
271 32-bit mode. */ | |
272 #define OS_MISSING_POWERPC64 1 | |
273 #define OS_MISSING_ALTIVEC 1 | |
274 | |
275 /* WINT_TYPE */ | |
276 #define WINT_TYPE "int" | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
277 |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
278 /* Static stack checking is supported by means of probes. */ |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
279 #define STACK_CHECK_STATIC_BUILTIN 1 |
111 | 280 |
281 /* Use standard DWARF numbering for DWARF debugging information. */ | |
282 #define RS6000_USE_DWARF_NUMBERING | |
283 |