aix43.h revision 117395 
1/* Definitions of target machine for GNU compiler,
2   for IBM RS/6000 POWER running AIX version 4.3.
3   Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4   Contributed by David Edelsohn (edelsohn@gnu.org).
5
6This file is part of GNU CC.
7
8GNU CC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GNU CC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GNU CC; see the file COPYING.  If not, write to
20the Free Software Foundation, 59 Temple Place - Suite 330,
21Boston, MA 02111-1307, USA.  */
22
23
24/* AIX 4.3 and above support 64-bit executables.  */
25#undef  SUBSUBTARGET_SWITCHES
26#define SUBSUBTARGET_SWITCHES					\
27  {"aix64", 		MASK_64BIT | MASK_POWERPC64 | MASK_POWERPC,	\
28   N_("Compile for 64-bit pointers") },					\
29  {"aix32",		- (MASK_64BIT | MASK_POWERPC64),		\
30   N_("Compile for 32-bit pointers") },					\
31  {"pe",		0,						\
32   N_("Support message passing with the Parallel Environment") },
33
34/* Sometimes certain combinations of command options do not make sense
35   on a particular target machine.  You can define a macro
36   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
37   defined, is executed once just after all the command options have
38   been parsed.
39
40   The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
41   get control.  */
42
43#define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
44#define SUBTARGET_OVERRIDE_OPTIONS					\
45do {									\
46  if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))		\
47    {									\
48      target_flags &= ~NON_POWERPC_MASKS;				\
49      warning ("-maix64 and POWER architecture are incompatible");	\
50    }									\
51  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
52    {									\
53      target_flags |= MASK_POWERPC64;					\
54      warning ("-maix64 requires PowerPC64 architecture remain enabled"); \
55    }									\
56  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
57    {									\
58      error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
59    }									\
60} while (0);
61
62#undef ASM_SPEC
63#define ASM_SPEC "-u %{maix64:-a64 -mppc64} %(asm_cpu)"
64
65/* Common ASM definitions used by ASM_SPEC amonst the various targets
66   for handling -mcpu=xxx switches.  */
67#undef ASM_CPU_SPEC
68#define ASM_CPU_SPEC \
69"%{!mcpu*: %{!maix64: \
70  %{mpower: %{!mpower2: -mpwr}} \
71  %{mpower2: -mpwr2} \
72  %{mpowerpc*: %{!mpowerpc64: -mppc}} \
73  %{mpowerpc64: -mppc64} \
74  %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
75%{mcpu=common: -mcom} \
76%{mcpu=power: -mpwr} \
77%{mcpu=power2: -mpwr2} \
78%{mcpu=power3: -m604} \
79%{mcpu=power4: -m604} \
80%{mcpu=powerpc: -mppc} \
81%{mcpu=rios: -mpwr} \
82%{mcpu=rios1: -mpwr} \
83%{mcpu=rios2: -mpwr2} \
84%{mcpu=rsc: -mpwr} \
85%{mcpu=rsc1: -mpwr} \
86%{mcpu=rs64a: -mppc} \
87%{mcpu=601: -m601} \
88%{mcpu=602: -mppc} \
89%{mcpu=603: -m603} \
90%{mcpu=603e: -m603} \
91%{mcpu=604: -m604} \
92%{mcpu=604e: -m604} \
93%{mcpu=620: -mppc} \
94%{mcpu=630: -m604}"
95
96#undef	ASM_DEFAULT_SPEC
97#define ASM_DEFAULT_SPEC "-mcom"
98
99#undef TARGET_OS_CPP_BUILTINS
100#define TARGET_OS_CPP_BUILTINS()      \
101  do                                  \
102    {                                 \
103      builtin_define ("_IBMR2");      \
104      builtin_define ("_POWER");      \
105      builtin_define ("_AIX");        \
106      builtin_define ("_AIX32");      \
107      builtin_define ("_AIX41");      \
108      builtin_define ("_AIX43");      \
109      builtin_define ("_LONG_LONG");  \
110      builtin_assert ("system=unix"); \
111      builtin_assert ("system=aix");  \
112    }                                 \
113  while (0)
114
115#undef CPP_SPEC
116#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\
117   %{ansi: -D_ANSI_C_SOURCE}\
118   %{maix64: -D__64BIT__}\
119   %{mpe: -I/usr/lpp/ppe.poe/include}\
120   %{pthread: -D_THREAD_SAFE}"
121
122/* The GNU C++ standard library requires that these macros be
123   defined.  */
124#undef CPLUSPLUS_CPP_SPEC
125#define CPLUSPLUS_CPP_SPEC			\
126  "-D_XOPEN_SOURCE=500				\
127   -D_XOPEN_SOURCE_EXTENDED=1			\
128   -D_LARGE_FILE_API				\
129   -D_ALL_SOURCE				\
130   %{maix64: -D__64BIT__}			\
131   %{mpe: -I/usr/lpp/ppe.poe/include}		\
132   %{pthread: -D_THREAD_SAFE}"
133
134#undef TARGET_DEFAULT
135#define TARGET_DEFAULT MASK_NEW_MNEMONICS
136
137#undef PROCESSOR_DEFAULT
138#define PROCESSOR_DEFAULT PROCESSOR_PPC604e
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#define	MULTILIB_DEFAULTS { "mcpu=common" }
151
152#undef LIB_SPEC
153#define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
154   %{p:-L/lib/profiled -L/usr/lib/profiled}\
155   %{!maix64:%{!shared:%{g*:-lg}}}\
156   %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
157   %{pthread:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
158   %{!pthread:-lc}"
159
160#undef LINK_SPEC
161#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
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
173/* AIX 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
174
175#undef PTRDIFF_TYPE
176#define PTRDIFF_TYPE "long int"
177
178/* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
179   and "cror 31,31,31" for POWER architecture.  */
180
181#undef RS6000_CALL_GLUE
182#define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
183
184/* AIX 4.2 and above provides initialization and finalization function
185   support from linker command line.  */
186#undef HAS_INIT_SECTION
187#define HAS_INIT_SECTION
188
189#undef LD_INIT_SWITCH
190#define LD_INIT_SWITCH "-binitfini"
191