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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 V7.1.
4 Copyright (C) 2002-2024 Free Software Foundation, Inc.
5 Contributed by David Edelsohn (edelsohn@gnu.org).
7 This file is part of GCC.
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.
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.
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/>. */
23 /* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
24 get control in TARGET_OPTION_OVERRIDE. */
26 #define SUBTARGET_OVERRIDE_OPTIONS \
28 if (TARGET_64BIT && ! TARGET_POWERPC64) \
30 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
31 warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
33 if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128) \
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"); \
39 if (TARGET_POWERPC64 && ! TARGET_64BIT) \
41 error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
43 if ((rs6000_isa_flags_explicit \
44 & OPTION_MASK_MINIMAL_TOC) != 0) \
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); \
51 if (rs6000_current_cmodel != CMODEL_SMALL) \
53 TARGET_NO_FP_IN_TOC = 1; \
54 TARGET_NO_SUM_IN_TOC = 1; \
56 if (rs6000_current_cmodel == CMODEL_MEDIUM) \
58 rs6000_current_cmodel = CMODEL_LARGE; \
60 if (! strcmp (lang_hooks.name, "GNU Go") \
63 /* aix/ppc doesn't support -mvsx and -maltivec with Go */ \
64 rs6000_isa_flags &= ~(OPTION_MASK_VSX | OPTION_MASK_ALTIVEC); \
66 if (!OPTION_SET_P (dwarf_version)) \
67 /* AIX only supports DWARF 4. */ \
71 #define ASM_SPEC32 "-a32"
72 #define ASM_SPEC64 "-a64"
73 #define ASM_SPEC_COMMON "-u %(asm_cpu)"
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. */
80 #define ASM_CPU_SPEC \
81 "%{mcpu=native: %(asm_cpu_native); \
82 mcpu=power11: -mpwr11; \
83 mcpu=power10: -mpwr10; \
84 mcpu=power9: -mpwr9; \
85 mcpu=power8: -mpwr8; \
86 mcpu=power7: -mpwr7; \
87 mcpu=power6x|mcpu=power6: -mpwr6; \
88 mcpu=power5+: -mpwr5x; \
89 mcpu=power5: -mpwr5; \
90 mcpu=power4: -mpwr4; \
92 mcpu=powerpc: -mppc; \
100 mcpu=970|mcpu=G5: -m970; \
101 !mcpu*: %(asm_default)} \
104 #undef ASM_DEFAULT_SPEC
105 #define ASM_DEFAULT_SPEC "-mpwr4"
107 #undef TARGET_OS_CPP_BUILTINS
108 #define TARGET_OS_CPP_BUILTINS() \
111 builtin_define ("_AIX43"); \
112 builtin_define ("_AIX51"); \
113 builtin_define ("_AIX52"); \
114 builtin_define ("_AIX53"); \
115 builtin_define ("_AIX61"); \
116 builtin_define ("_AIX71"); \
117 TARGET_OS_AIX_CPP_BUILTINS (); \
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}"
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}"
135 #define RS6000_CPU(NAME, CPU, FLAGS)
136 #include "rs6000-cpus.def"
139 #undef TARGET_DEFAULT
140 #ifdef RS6000_BI_ARCH
141 #define TARGET_DEFAULT (OPTION_MASK_PPC_GPOPT | OPTION_MASK_PPC_GFXOPT \
142 | OPTION_MASK_MFCRF | MASK_POWERPC64 | MASK_64BIT)
144 #define TARGET_DEFAULT (OPTION_MASK_PPC_GPOPT | OPTION_MASK_PPC_GFXOPT \
148 #undef PROCESSOR_DEFAULT
149 #define PROCESSOR_DEFAULT PROCESSOR_POWER7
150 #undef PROCESSOR_DEFAULT64
151 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
153 /* AIX 7.1 kernel and assembler have necessary support for Altivec and VSX. */
154 #undef OS_MISSING_ALTIVEC
156 /* Define this macro as a C expression for the initializer of an
157 array of string to tell the driver program which options are
158 defaults for this target and thus do not need to be handled
159 specially when using `MULTILIB_OPTIONS'.
161 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
162 the target makefile fragment or if none of the options listed in
163 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
165 #undef MULTILIB_DEFAULTS
167 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
169 #define LIB_SPEC32 "%{!shared:%{g*:-lg}}"
170 #define LIB_SPEC64 ""
171 #define LIB_SPEC_COMMON "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
172 %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
173 %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
174 %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
175 %{mlong-double-128:-lc128}\
176 %{pthread:-lpthreads} -lc"
178 #define LINK_SPEC32 "%{!shared:%{g*: %(link_libg) }} -b32"
179 #define LINK_SPEC64 "-b64"
180 #define LINK_SPEC_COMMON "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
181 %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
182 %{mpe:-binitfini:poe_remote_main} "
184 #undef STARTFILE_SPEC
186 #define STARTFILE_SPEC "%{!shared:\
187 %{!maix32:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
188 %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
189 %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
190 %{!maix32:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
191 %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
193 #define STARTFILE_SPEC "%{!shared:\
194 %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
195 %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
196 %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
197 %{maix64:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
198 %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
204 #undef CPLUSPLUS_CPP_SPEC
209 #define ASM_SPEC "%{maix32:%(asm_spec32);:%(asm_spec64)} %(asm_spec_common)"
210 #define CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cpp_spec_common)"
211 #define CPLUSPLUS_CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cplusplus_cpp_spec_common)"
212 #define LIB_SPEC "%{maix32:%(lib_spec32);:%(lib_spec64)} %(lib_spec_common)"
213 #define LINK_SPEC "%{maix32:%(link_spec32);:%(link_spec64)} %(link_spec_common)"
215 #define ASM_SPEC "%{maix64:%(asm_spec64);:%(asm_spec32)} %(asm_spec_common)"
216 #define CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cpp_spec_common)"
217 #define CPLUSPLUS_CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cplusplus_cpp_spec_common)"
218 #define LIB_SPEC "%{maix64:%(lib_spec64);:%(lib_spec32)} %(lib_spec_common)"
219 #define LINK_SPEC "%{maix64:%(link_spec64);:%(link_spec32)} %(link_spec_common)"
222 #undef SUBTARGET_EXTRA_SPECS
223 #define SUBTARGET_EXTRA_SPECS \
224 { "asm_spec_common", ASM_SPEC_COMMON }, \
225 { "asm_spec32", ASM_SPEC32 }, \
226 { "asm_spec64", ASM_SPEC64 }, \
227 { "cpp_spec_common", CPP_SPEC_COMMON }, \
228 { "cplusplus_cpp_spec_common", CPLUSPLUS_CPP_SPEC_COMMON }, \
229 { "cpp_spec32", CPP_SPEC32 }, \
230 { "cpp_spec64", CPP_SPEC64 }, \
231 { "lib_spec_common", LIB_SPEC_COMMON }, \
232 { "lib_spec32", LIB_SPEC32 }, \
233 { "lib_spec64", LIB_SPEC64 }, \
234 { "link_spec_common", LINK_SPEC_COMMON }, \
235 { "link_spec32", LINK_SPEC32 }, \
236 { "link_spec64", LINK_SPEC64 },
238 /* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int". */
241 #define PTRDIFF_TYPE "long int"
243 /* Type used for wchar_t, as a string used in a declaration. */
245 #define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
247 /* Width of wchar_t in bits. */
248 #undef WCHAR_TYPE_SIZE
249 #define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
251 /* AIX 4.2 and above provides initialization and finalization function
252 support from linker command line. */
253 #undef HAS_INIT_SECTION
254 #define HAS_INIT_SECTION
256 #undef LD_INIT_SWITCH
257 #define LD_INIT_SWITCH "-binitfini"
260 extern long long int atoll(const char *);
263 /* This target uses the aix64.opt file. */
264 #define TARGET_USES_AIX64_OPT 1
266 /* Large TOC Support */
267 #ifdef HAVE_LD_LARGE_TOC
269 #define TARGET_CMODEL rs6000_current_cmodel
270 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
272 #define SET_CMODEL(opt) do {} while (0)
275 /* System headers are not C++-aware. */
276 #define SYSTEM_IMPLICIT_EXTERN_C 1
278 /* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
279 but does not have crtbegin/end. */
281 #define TARGET_AIX_VERSION 71
283 /* AIX 7.1 supports DWARF3+ debugging. */
284 #define DWARF2_DEBUGGING_INFO 1
285 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
286 #define DEBUG_INFO_SECTION "0x10000"
287 #define DEBUG_LINE_SECTION "0x20000"
288 #define DEBUG_PUBNAMES_SECTION "0x30000"
289 #define DEBUG_PUBTYPES_SECTION "0x40000"
290 #define DEBUG_ARANGES_SECTION "0x50000"
291 #define DEBUG_ABBREV_SECTION "0x60000"
292 #define DEBUG_STR_SECTION "0x70000"
293 #define DEBUG_RANGES_SECTION "0x80000"
294 #define DEBUG_LOC_SECTION "0x90000"
295 #define DEBUG_FRAME_SECTION "0xA0000"
296 #define DEBUG_MACINFO_SECTION "0xB0000"
297 #define DEBUG_MACRO_SECTION "0xB0000"