1 // SPDX-License-Identifier: GPL-3.0-or-later
2 /* Definitions of target machine for GNU compiler,
3 for IBM RS/6000 POWER running AIX V7.2.
4 Copyright (C) 2002-2023 Free Software Foundation, Inc.
5 Contributed by David Edelsohn (edelsohn@gnu.org).
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published
11 by the Free Software Foundation; either version 3, or (at your
12 option) any later version.
13
14 GCC is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
17 License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
22
23 /* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
24 get control in TARGET_OPTION_OVERRIDE. */
25
26 #define SUBTARGET_OVERRIDE_OPTIONS \
27 do { \
28 if (TARGET_64BIT && ! TARGET_POWERPC64) \
29 { \
30 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
31 warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
32 } \
33 if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128) \
34 { \
35 rs6000_long_double_type_size = 64; \
36 if (OPTION_SET_P (rs6000_long_double_type_size)) \
37 warning (0, "soft-float and long-double-128 are incompatible"); \
38 } \
39 if (TARGET_POWERPC64 && ! TARGET_64BIT) \
40 { \
41 error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
42 } \
43 if ((rs6000_isa_flags_explicit \
44 & OPTION_MASK_MINIMAL_TOC) != 0) \
45 { \
46 if (OPTION_SET_P (rs6000_current_cmodel) \
47 && rs6000_current_cmodel != CMODEL_SMALL) \
48 error ("%<-mcmodel%> incompatible with other toc options"); \
49 SET_CMODEL (CMODEL_SMALL); \
50 } \
51 if (rs6000_current_cmodel != CMODEL_SMALL) \
52 { \
53 TARGET_NO_FP_IN_TOC = 1; \
54 TARGET_NO_SUM_IN_TOC = 1; \
55 } \
56 if (rs6000_current_cmodel == CMODEL_MEDIUM) \
57 { \
58 rs6000_current_cmodel = CMODEL_LARGE; \
59 } \
60 if (! strcmp (lang_hooks.name, "GNU Go") \
61 && TARGET_32BIT) \
62 { \
63 /* aix/ppc doesn't support -mvsx and -maltivec with Go */ \
64 rs6000_isa_flags &= ~(OPTION_MASK_VSX | OPTION_MASK_ALTIVEC); \
65 } \
66 if (!OPTION_SET_P (dwarf_version)) \
67 /* AIX only supports DWARF 4. */ \
68 dwarf_version = 4; \
69 } while (0)
70
71 #define ASM_SPEC32 "-a32"
72 #define ASM_SPEC64 "-a64"
73 #define ASM_SPEC_COMMON "-u %(asm_cpu)"
74
75 /* Common ASM definitions used by ASM_SPEC amongst the various targets for
76 handling -mcpu=xxx switches. There is a parallel list in driver-rs6000.cc to
77 provide the default assembler options if the user uses -mcpu=native, so if
78 you make changes here, make them there also. */
79 #undef ASM_CPU_SPEC
80 #define ASM_CPU_SPEC \
81 "%{mcpu=native: %(asm_cpu_native); \
82 mcpu=power10: -mpwr10; \
83 mcpu=power9: -mpwr9; \
84 mcpu=power8: -mpwr8; \
85 mcpu=power7: -mpwr7; \
86 mcpu=power6x|mcpu=power6: -mpwr6; \
87 mcpu=power5+: -mpwr5x; \
88 mcpu=power5: -mpwr5; \
89 mcpu=power4: -mpwr4; \
90 mcpu=power3: -m620; \
91 mcpu=powerpc: -mppc; \
92 mcpu=rs64: -mppc; \
93 mcpu=603: -m603; \
94 mcpu=603e: -m603; \
95 mcpu=604: -m604; \
96 mcpu=604e: -m604; \
97 mcpu=620: -m620; \
98 mcpu=630: -m620; \
99 mcpu=970|mcpu=G5: -m970; \
100 !mcpu*: %(asm_default)} \
101 -many"
102
103 #undef ASM_DEFAULT_SPEC
104 #define ASM_DEFAULT_SPEC "-mpwr7"
105
106 #undef TARGET_OS_CPP_BUILTINS
107 #define TARGET_OS_CPP_BUILTINS() \
108 do \
109 { \
110 builtin_define ("_AIX43"); \
111 builtin_define ("_AIX51"); \
112 builtin_define ("_AIX52"); \
113 builtin_define ("_AIX53"); \
114 builtin_define ("_AIX61"); \
115 builtin_define ("_AIX71"); \
116 builtin_define ("_AIX72"); \
117 TARGET_OS_AIX_CPP_BUILTINS (); \
118 } \
119 while (0)
120
121 #define CPP_SPEC32 ""
122 #define CPP_SPEC64 "-D__64BIT__"
123 #define CPP_SPEC_COMMON "%{posix: -D_POSIX_SOURCE} \
124 %{ansi: -D_ANSI_C_SOURCE} \
125 %{mpe: -I%R/usr/lpp/ppe.poe/include} \
126 %{pthread: -D_THREAD_SAFE}"
127
128 /* The GNU C++ standard library requires that these macros be
129 defined. Synchronize with libstdc++ os_defines.h. */
130 #define CPLUSPLUS_CPP_SPEC_COMMON \
131 "-D_ALL_SOURCE -D__COMPATMATH__ \
132 %{mpe: -I%R/usr/lpp/ppe.poe/include} \
133 %{pthread: -D_THREAD_SAFE}"
134
135 #define RS6000_CPU(NAME, CPU, FLAGS)
136 #include "rs6000-cpus.def"
137 #undef RS6000_CPU
138
139 #undef TARGET_DEFAULT
140 #ifdef RS6000_BI_ARCH
141 #define TARGET_DEFAULT (ISA_2_6_MASKS_EMBEDDED | MASK_POWERPC64 | MASK_64BIT)
142 #else
143 #define TARGET_DEFAULT ISA_2_6_MASKS_EMBEDDED
144 #endif
145
146 #undef PROCESSOR_DEFAULT
147 #define PROCESSOR_DEFAULT PROCESSOR_POWER7
148 #undef PROCESSOR_DEFAULT64
149 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
150
151 /* AIX 7.2 kernel and assembler have necessary support for Altivec and VSX. */
152 #undef OS_MISSING_ALTIVEC
153
154 /* Define this macro as a C expression for the initializer of an
155 array of string to tell the driver program which options are
156 defaults for this target and thus do not need to be handled
157 specially when using `MULTILIB_OPTIONS'.
158
159 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
160 the target makefile fragment or if none of the options listed in
161 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
162
163 #undef MULTILIB_DEFAULTS
164
165 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
166
167 #define LIB_SPEC32 "%{!shared:%{g*:-lg}}"
168 #define LIB_SPEC64 ""
169 #define LIB_SPEC_COMMON "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
170 %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
171 %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
172 %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
173 %{mlong-double-128:-lc128}\
174 %{pthread:-lpthreads} -lc"
175
176 #define LINK_SPEC32 "%{!shared:%{g*: %(link_libg) }} -b32"
177 #define LINK_SPEC64 "-b64"
178 #define LINK_SPEC_COMMON "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
179 %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
180 %{mpe:-binitfini:poe_remote_main} "
181
182 #undef STARTFILE_SPEC
183 #if DEFAULT_ARCH64_P
184 #define STARTFILE_SPEC "%{!shared:\
185 %{!maix32:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
186 %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
187 %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
188 %{!maix32:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
189 %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
190 #else
191 #define STARTFILE_SPEC "%{!shared:\
192 %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
193 %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
194 %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
195 %{maix64:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
196 %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
197 #endif
198
199
200 #undef ASM_SPEC
201 #undef CPP_SPEC
202 #undef CPLUSPLUS_CPP_SPEC
203 #undef LIB_SPEC
204 #undef LINK_SPEC
205
206 #if DEFAULT_ARCH64_P
207 #define ASM_SPEC "%{maix32:%(asm_spec32);:%(asm_spec64)} %(asm_spec_common)"
208 #define CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cpp_spec_common)"
209 #define CPLUSPLUS_CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cplusplus_cpp_spec_common)"
210 #define LIB_SPEC "%{maix32:%(lib_spec32);:%(lib_spec64)} %(lib_spec_common)"
211 #define LINK_SPEC "%{maix32:%(link_spec32);:%(link_spec64)} %(link_spec_common)"
212 #else
213 #define ASM_SPEC "%{maix64:%(asm_spec64);:%(asm_spec32)} %(asm_spec_common)"
214 #define CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cpp_spec_common)"
215 #define CPLUSPLUS_CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cplusplus_cpp_spec_common)"
216 #define LIB_SPEC "%{maix64:%(lib_spec64);:%(lib_spec32)} %(lib_spec_common)"
217 #define LINK_SPEC "%{maix64:%(link_spec64);:%(link_spec32)} %(link_spec_common)"
218 #endif
219
220 #undef SUBTARGET_EXTRA_SPECS
221 #define SUBTARGET_EXTRA_SPECS \
222 { "asm_spec_common", ASM_SPEC_COMMON }, \
223 { "asm_spec32", ASM_SPEC32 }, \
224 { "asm_spec64", ASM_SPEC64 }, \
225 { "cpp_spec_common", CPP_SPEC_COMMON }, \
226 { "cplusplus_cpp_spec_common", CPLUSPLUS_CPP_SPEC_COMMON }, \
227 { "cpp_spec32", CPP_SPEC32 }, \
228 { "cpp_spec64", CPP_SPEC64 }, \
229 { "lib_spec_common", LIB_SPEC_COMMON }, \
230 { "lib_spec32", LIB_SPEC32 }, \
231 { "lib_spec64", LIB_SPEC64 }, \
232 { "link_spec_common", LINK_SPEC_COMMON }, \
233 { "link_spec32", LINK_SPEC32 }, \
234 { "link_spec64", LINK_SPEC64 },
235
236 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int". */
237
238 #undef PTRDIFF_TYPE
239 #define PTRDIFF_TYPE "long int"
240
241 /* Type used for wchar_t, as a string used in a declaration. */
242 #undef WCHAR_TYPE
243 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
244
245 /* Width of wchar_t in bits. */
246 #undef WCHAR_TYPE_SIZE
247 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
248
249 /* AIX 4.2 and above provides initialization and finalization function
250 support from linker command line. */
251 #undef HAS_INIT_SECTION
252 #define HAS_INIT_SECTION
253
254 #undef LD_INIT_SWITCH
255 #define LD_INIT_SWITCH "-binitfini"
256
257 #ifndef _AIX52
258 extern long long int atoll(const char *);
259 #endif
260
261 /* This target uses the aix64.opt file. */
262 #define TARGET_USES_AIX64_OPT 1
263
264 /* Large TOC Support */
265 #ifdef HAVE_LD_LARGE_TOC
266 #undef TARGET_CMODEL
267 #define TARGET_CMODEL rs6000_current_cmodel
268 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
269 #else
270 #define SET_CMODEL(opt) do {} while (0)
271 #endif
272
273 /* System headers are not C++-aware. */
274 #define SYSTEM_IMPLICIT_EXTERN_C 1
275
276 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
277 but does not have crtbegin/end. */
278
279 #define TARGET_AIX_VERSION 72
280
281 /* AIX 7.2 supports DWARF3+ debugging. */
282 #define DWARF2_DEBUGGING_INFO 1
283 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
284 #define DEBUG_INFO_SECTION "0x10000"
285 #define DEBUG_LINE_SECTION "0x20000"
286 #define DEBUG_PUBNAMES_SECTION "0x30000"
287 #define DEBUG_PUBTYPES_SECTION "0x40000"
288 #define DEBUG_ARANGES_SECTION "0x50000"
289 #define DEBUG_ABBREV_SECTION "0x60000"
290 #define DEBUG_STR_SECTION "0x70000"
291 #define DEBUG_RANGES_SECTION "0x80000"
292 #define DEBUG_LOC_SECTION "0x90000"
293 #define DEBUG_FRAME_SECTION "0xA0000"
294 #define DEBUG_MACINFO_SECTION "0xB0000"
295 #define DEBUG_MACRO_SECTION "0xB0000"
296