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, 2003, 2004, 2005, 2006
4   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 2, 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 COPYING.  If not, write to the
21   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
22   MA 02110-1301, USA.  */
23
24/* Sometimes certain combinations of command options do not make sense
25   on a particular target machine.  You can define a macro
26   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
27   defined, is executed once just after all the command options have
28   been parsed.
29
30   The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
31   get control.  */
32
33#define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
34#define SUBTARGET_OVERRIDE_OPTIONS					\
35do {									\
36  if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))		\
37    {									\
38      target_flags &= ~NON_POWERPC_MASKS;				\
39      warning (0, "-maix64 and POWER architecture are incompatible");	\
40    }									\
41  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
42    {									\
43      target_flags |= MASK_POWERPC64;					\
44      warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
45    }									\
46  if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)			\
47    {									\
48      rs6000_long_double_type_size = 64;				\
49      if (rs6000_explicit_options.long_double)				\
50	warning (0, "soft-float and long-double-128 are incompatible");	\
51    }									\
52  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
53    {									\
54      error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
55    }									\
56} while (0);
57
58#undef ASM_SPEC
59#define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
60
61/* Common ASM definitions used by ASM_SPEC amongst the various targets
62   for handling -mcpu=xxx switches.  */
63#undef ASM_CPU_SPEC
64#define ASM_CPU_SPEC \
65"%{!mcpu*: %{!maix64: \
66  %{mpower: %{!mpower2: -mpwr}} \
67  %{mpower2: -mpwr2} \
68  %{mpowerpc*: %{!mpowerpc64: -mppc}} \
69  %{mpowerpc64: -mppc64} \
70  %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
71%{mcpu=common: -mcom} \
72%{mcpu=power: -mpwr} \
73%{mcpu=power2: -mpwr2} \
74%{mcpu=power3: -m620} \
75%{mcpu=power4: -m620} \
76%{mcpu=powerpc: -mppc} \
77%{mcpu=rios: -mpwr} \
78%{mcpu=rios1: -mpwr} \
79%{mcpu=rios2: -mpwr2} \
80%{mcpu=rsc: -mpwr} \
81%{mcpu=rsc1: -mpwr} \
82%{mcpu=rs64a: -mppc} \
83%{mcpu=601: -m601} \
84%{mcpu=602: -mppc} \
85%{mcpu=603: -m603} \
86%{mcpu=603e: -m603} \
87%{mcpu=604: -m604} \
88%{mcpu=604e: -m604} \
89%{mcpu=620: -m620} \
90%{mcpu=630: -m620}"
91
92#undef	ASM_DEFAULT_SPEC
93#define ASM_DEFAULT_SPEC "-mcom"
94
95#undef TARGET_OS_CPP_BUILTINS
96#define TARGET_OS_CPP_BUILTINS()     \
97  do                                 \
98    {                                \
99      builtin_define ("_AIX43");     \
100      TARGET_OS_AIX_CPP_BUILTINS (); \
101    }                                \
102  while (0)
103
104#undef CPP_SPEC
105#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}\
106   %{ansi: -D_ANSI_C_SOURCE}\
107   %{maix64: -D__64BIT__}\
108   %{mpe: -I/usr/lpp/ppe.poe/include}\
109   %{pthread: -D_THREAD_SAFE}"
110
111/* The GNU C++ standard library requires that these macros be
112   defined.  */
113#undef CPLUSPLUS_CPP_SPEC
114#define CPLUSPLUS_CPP_SPEC			\
115  "-D_ALL_SOURCE				\
116   %{maix64: -D__64BIT__}			\
117   %{mpe: -I/usr/lpp/ppe.poe/include}		\
118   %{pthread: -D_THREAD_SAFE}"
119
120#undef TARGET_DEFAULT
121#define TARGET_DEFAULT MASK_NEW_MNEMONICS
122
123#undef PROCESSOR_DEFAULT
124#define PROCESSOR_DEFAULT PROCESSOR_PPC604e
125
126/* Define this macro as a C expression for the initializer of an
127   array of string to tell the driver program which options are
128   defaults for this target and thus do not need to be handled
129   specially when using `MULTILIB_OPTIONS'.
130
131   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
132   the target makefile fragment or if none of the options listed in
133   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
134
135#undef	MULTILIB_DEFAULTS
136#define	MULTILIB_DEFAULTS { "mcpu=common" }
137
138#undef LIB_SPEC
139#define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
140   %{p:-L/lib/profiled -L/usr/lib/profiled}\
141   %{!maix64:%{!shared:%{g*:-lg}}}\
142   %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
143   %{pthread:-L/usr/lib/threads -lpthreads -lc_r /usr/lib/libc.a}\
144   %{!pthread:-lc}"
145
146#undef LINK_SPEC
147#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
148   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
149   %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
150   %{mpe:-binitfini:poe_remote_main}"
151
152#undef STARTFILE_SPEC
153#define STARTFILE_SPEC "%{!shared:\
154   %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
155   %{!maix64:\
156     %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
157     %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
158
159/* AIX 4.3 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
160
161#undef PTRDIFF_TYPE
162#define PTRDIFF_TYPE "long int"
163
164/* AIX 4 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
165   and "cror 31,31,31" for POWER architecture.  */
166
167#undef RS6000_CALL_GLUE
168#define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
169
170/* AIX 4.2 and above provides initialization and finalization function
171   support from linker command line.  */
172#undef HAS_INIT_SECTION
173#define HAS_INIT_SECTION
174
175#undef LD_INIT_SWITCH
176#define LD_INIT_SWITCH "-binitfini"
177
178/* The IBM AIX 4.x assembler doesn't support forward references in
179   .set directives.  We handle this by deferring the output of .set
180   directives to the end of the compilation unit.  */
181#define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) true
182
183/* This target uses the aix64.opt file.  */
184#define TARGET_USES_AIX64_OPT 1
185