1/* Definitions of target machine for GNU compiler,
2   for IBM RS/6000 POWER running AIX V5.
3   Copyright (C) 2001, 2003, 2004, 2005 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 2, 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 COPYING.  If not, write to the
20   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
21   MA 02110-1301, USA.  */
22
23/* Sometimes certain combinations of command options do not make sense
24   on a particular target machine.  You can define a macro
25   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
26   defined, is executed once just after all the command options have
27   been parsed.
28
29   The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
30   get control.  */
31
32#define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
33#define SUBTARGET_OVERRIDE_OPTIONS					\
34do {									\
35  if (TARGET_64BIT && (target_flags & NON_POWERPC_MASKS))		\
36    {									\
37      target_flags &= ~NON_POWERPC_MASKS;				\
38      warning (0, "-maix64 and POWER architecture are incompatible");	\
39    }									\
40  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
41    {									\
42      target_flags |= MASK_POWERPC64;					\
43      warning (0, "-maix64 requires PowerPC64 architecture remain enabled"); \
44    }									\
45  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
46    {									\
47      error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
48    }									\
49} while (0);
50
51#undef ASM_SPEC
52#define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
53
54/* Common ASM definitions used by ASM_SPEC amongst the various targets
55   for handling -mcpu=xxx switches.  */
56#undef ASM_CPU_SPEC
57#define ASM_CPU_SPEC \
58"%{!mcpu*: %{!maix64: \
59  %{mpower: %{!mpower2: -mpwr}} \
60  %{mpower2: -mpwr2} \
61  %{mpowerpc*: %{!mpowerpc64: -mppc}} \
62  %{mpowerpc64: -mppc64} \
63  %{!mpower*: %{!mpowerpc*: %(asm_default)}}}} \
64%{mcpu=common: -mcom} \
65%{mcpu=power: -mpwr} \
66%{mcpu=power2: -mpwr2} \
67%{mcpu=power3: -m620} \
68%{mcpu=power4: -m620} \
69%{mcpu=powerpc: -mppc} \
70%{mcpu=rios: -mpwr} \
71%{mcpu=rios1: -mpwr} \
72%{mcpu=rios2: -mpwr2} \
73%{mcpu=rsc: -mpwr} \
74%{mcpu=rsc1: -mpwr} \
75%{mcpu=rs64a: -mppc} \
76%{mcpu=601: -m601} \
77%{mcpu=602: -mppc} \
78%{mcpu=603: -m603} \
79%{mcpu=603e: -m603} \
80%{mcpu=604: -m604} \
81%{mcpu=604e: -m604} \
82%{mcpu=620: -m620} \
83%{mcpu=630: -m620} \
84%{mcpu=970: -m620} \
85%{mcpu=G5: -m620}"
86
87#undef	ASM_DEFAULT_SPEC
88#define ASM_DEFAULT_SPEC "-mcom"
89
90#undef TARGET_OS_CPP_BUILTINS
91#define TARGET_OS_CPP_BUILTINS()     \
92  do                                 \
93    {                                \
94      builtin_define ("_AIX43");     \
95      builtin_define ("_AIX51");     \
96      TARGET_OS_AIX_CPP_BUILTINS (); \
97    }                                \
98  while (0)
99
100#undef CPP_SPEC
101#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}	\
102  %{ansi: -D_ANSI_C_SOURCE}			\
103  %{maix64: -D__64BIT__}			\
104  %{mpe: -I/usr/lpp/ppe.poe/include}		\
105  %{pthread: -D_THREAD_SAFE}"
106
107/* The GNU C++ standard library requires that these macros be
108   defined.  */
109#undef CPLUSPLUS_CPP_SPEC
110#define CPLUSPLUS_CPP_SPEC			\
111  "-D_ALL_SOURCE				\
112   %{maix64: -D__64BIT__}			\
113   %{mpe: -I/usr/lpp/ppe.poe/include}		\
114   %{pthread: -D_THREAD_SAFE}"
115
116#undef TARGET_DEFAULT
117#define TARGET_DEFAULT MASK_NEW_MNEMONICS
118
119#undef PROCESSOR_DEFAULT
120#define PROCESSOR_DEFAULT PROCESSOR_PPC604e
121
122/* Define this macro as a C expression for the initializer of an
123   array of string to tell the driver program which options are
124   defaults for this target and thus do not need to be handled
125   specially when using `MULTILIB_OPTIONS'.
126
127   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
128   the target makefile fragment or if none of the options listed in
129   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
130
131#undef	MULTILIB_DEFAULTS
132#define	MULTILIB_DEFAULTS { "mcpu=common" }
133
134#undef LIB_SPEC
135#define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
136   %{p:-L/lib/profiled -L/usr/lib/profiled}\
137   %{!maix64:%{!shared:%{g*:-lg}}}\
138   %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
139   %{pthread:-lpthreads} -lc"
140
141#undef LINK_SPEC
142#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
143   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
144   %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
145   %{mpe:-binitfini:poe_remote_main}"
146
147#undef STARTFILE_SPEC
148#define STARTFILE_SPEC "%{!shared:\
149   %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
150   %{!maix64:\
151     %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
152     %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
153
154/* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
155
156#undef PTRDIFF_TYPE
157#define PTRDIFF_TYPE "long int"
158
159/* Type used for wchar_t, as a string used in a declaration.  */
160#undef  WCHAR_TYPE
161#define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
162
163/* Width of wchar_t in bits.  */
164#undef  WCHAR_TYPE_SIZE
165#define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
166
167/* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
168   and "cror 31,31,31" for POWER architecture.  */
169
170#undef RS6000_CALL_GLUE
171#define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
172
173/* AIX 4.2 and above provides initialization and finalization function
174   support from linker command line.  */
175#undef HAS_INIT_SECTION
176#define HAS_INIT_SECTION
177
178#undef LD_INIT_SWITCH
179#define LD_INIT_SWITCH "-binitfini"
180
181/* This target uses the aix64.opt file.  */
182#define TARGET_USES_AIX64_OPT 1
183