1/* Definitions of target machine for GNU compiler,
2   for IBM RS/6000 POWER running AIX V6.1.
3   Copyright (C) 2002-2020 Free Software Foundation, Inc.
4   Contributed by David Edelsohn (edelsohn@gnu.org).
5
6   This file is part of GCC.
7
8   GCC is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published
10   by the Free Software Foundation; either version 3, or (at your
11   option) any later version.
12
13   GCC is distributed in the hope that it will be useful, but WITHOUT
14   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16   License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GCC; see the file COPYING3.  If not see
20   <http://www.gnu.org/licenses/>.  */
21
22/* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
23   get control in TARGET_OPTION_OVERRIDE.  */
24
25#define SUBTARGET_OVERRIDE_OPTIONS					\
26do {									\
27  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
28    {									\
29      rs6000_isa_flags |= OPTION_MASK_POWERPC64;			\
30      warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
31    }									\
32  if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)			\
33    {									\
34      rs6000_long_double_type_size = 64;				\
35      if (global_options_set.x_rs6000_long_double_type_size)		\
36	warning (0, "soft-float and long-double-128 are incompatible");	\
37    }									\
38  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
39    {									\
40      error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
41    }									\
42  if ((rs6000_isa_flags_explicit					\
43       & OPTION_MASK_MINIMAL_TOC) != 0)					\
44    {									\
45      if (global_options_set.x_rs6000_current_cmodel			\
46	  && rs6000_current_cmodel != CMODEL_SMALL)			\
47	error ("%<-mcmodel%> incompatible with other toc options"); 	\
48      SET_CMODEL (CMODEL_SMALL);					\
49    }									\
50  if (rs6000_current_cmodel != CMODEL_SMALL)				\
51    {									\
52      TARGET_NO_FP_IN_TOC = 1;						\
53      TARGET_NO_SUM_IN_TOC = 1;						\
54    }									\
55  if (rs6000_current_cmodel == CMODEL_MEDIUM)				\
56    {									\
57      rs6000_current_cmodel = CMODEL_LARGE;				\
58    }									\
59} while (0)
60
61#undef ASM_SPEC
62#define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
63
64/* Common ASM definitions used by ASM_SPEC amongst the various targets for
65   handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.c to
66   provide the default assembler options if the user uses -mcpu=native, so if
67   you make changes here, make them there also.  */
68#undef ASM_CPU_SPEC
69#define ASM_CPU_SPEC \
70"%{!mcpu*: %{!maix64: \
71  %{mpowerpc64: -mppc64} \
72  %{maltivec: -m970} \
73  %{!maltivec: %{!mpowerpc64: %(asm_default)}}}} \
74%{mcpu=native: %(asm_cpu_native)} \
75%{mcpu=power3: -m620} \
76%{mcpu=power4: -mpwr4} \
77%{mcpu=power5: -mpwr5} \
78%{mcpu=power5+: -mpwr5x} \
79%{mcpu=power6: -mpwr6} \
80%{mcpu=power6x: -mpwr6} \
81%{mcpu=power7: -mpwr7} \
82%{mcpu=power8: -mpwr8} \
83%{mcpu=power9: -mpwr9} \
84%{mcpu=powerpc: -mppc} \
85%{mcpu=rs64a: -mppc} \
86%{mcpu=603: -m603} \
87%{mcpu=603e: -m603} \
88%{mcpu=604: -m604} \
89%{mcpu=604e: -m604} \
90%{mcpu=620: -m620} \
91%{mcpu=630: -m620} \
92%{mcpu=970: -m970} \
93%{mcpu=G5: -m970} \
94%{mvsx: %{!mcpu*: -mpwr6}} \
95-many"
96
97#undef	ASM_DEFAULT_SPEC
98#define ASM_DEFAULT_SPEC "-mpwr4"
99
100#undef TARGET_OS_CPP_BUILTINS
101#define TARGET_OS_CPP_BUILTINS()     \
102  do                                 \
103    {                                \
104      builtin_define ("_AIX43");     \
105      builtin_define ("_AIX51");     \
106      builtin_define ("_AIX52");     \
107      builtin_define ("_AIX53");     \
108      builtin_define ("_AIX61");     \
109      TARGET_OS_AIX_CPP_BUILTINS (); \
110    }                                \
111  while (0)
112
113#undef CPP_SPEC
114#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}	\
115  %{ansi: -D_ANSI_C_SOURCE}			\
116  %{maix64: -D__64BIT__}			\
117  %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
118  %{pthread: -D_THREAD_SAFE}"
119
120/* The GNU C++ standard library requires that these macros be
121   defined.  Synchronize with libstdc++ os_defines.h.  */
122#undef CPLUSPLUS_CPP_SPEC
123#define CPLUSPLUS_CPP_SPEC			\
124  "-D_ALL_SOURCE -D__COMPATMATH__		\
125   %{maix64: -D__64BIT__}			\
126   %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
127   %{pthread: -D_THREAD_SAFE}"
128
129#undef  TARGET_DEFAULT
130#define TARGET_DEFAULT (MASK_PPC_GPOPT | MASK_PPC_GFXOPT | MASK_MFCRF)
131
132#undef  PROCESSOR_DEFAULT
133#define PROCESSOR_DEFAULT PROCESSOR_POWER7
134#undef  PROCESSOR_DEFAULT64
135#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
136
137/* AIX 6.1 kernel and assembler have necessary support for Altivec and VSX.  */
138#undef OS_MISSING_ALTIVEC
139
140/* Define this macro as a C expression for the initializer of an
141   array of string to tell the driver program which options are
142   defaults for this target and thus do not need to be handled
143   specially when using `MULTILIB_OPTIONS'.
144
145   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
146   the target makefile fragment or if none of the options listed in
147   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
148
149#undef	MULTILIB_DEFAULTS
150
151#undef LIB_SPEC
152#define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
153   %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
154   %{!maix64:%{!shared:%{g*:-lg}}}\
155   %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
156   %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
157   %{mlong-double-128:-lc128}\
158   %{pthread:-lpthreads} -lc"
159
160#undef LINK_SPEC
161#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
162   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
163   %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
164   %{mpe:-binitfini:poe_remote_main}"
165
166#undef STARTFILE_SPEC
167#define STARTFILE_SPEC "%{!shared:\
168   %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
169   %{!maix64:\
170     %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
171     %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}\
172   %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s"
173
174/* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
175
176#undef PTRDIFF_TYPE
177#define PTRDIFF_TYPE "long int"
178
179/* Type used for wchar_t, as a string used in a declaration.  */
180#undef  WCHAR_TYPE
181#define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
182
183/* Width of wchar_t in bits.  */
184#undef  WCHAR_TYPE_SIZE
185#define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
186
187/* AIX 4.2 and above provides initialization and finalization function
188   support from linker command line.  */
189#undef HAS_INIT_SECTION
190#define HAS_INIT_SECTION
191
192#undef LD_INIT_SWITCH
193#define LD_INIT_SWITCH "-binitfini"
194
195#ifndef _AIX52
196extern long long int    atoll(const char *);
197#endif
198
199/* This target uses the aix64.opt file.  */
200#define TARGET_USES_AIX64_OPT 1
201
202/* Large TOC Support */
203#ifdef HAVE_LD_LARGE_TOC
204#undef TARGET_CMODEL
205#define TARGET_CMODEL rs6000_current_cmodel
206#define SET_CMODEL(opt) rs6000_current_cmodel = opt
207#else
208#define SET_CMODEL(opt) do {} while (0)
209#endif
210
211/* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
212   but does not have crtbegin/end.  */
213
214#define TARGET_AIX_VERSION 61
215