aix52.h revision 169690 
1/* Definitions of target machine for GNU compiler,
2   for IBM RS/6000 POWER running AIX V5.2.
3   Copyright (C) 2002, 2003, 2004, 2005, 2006 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_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)			\
46    {									\
47      rs6000_long_double_type_size = 64;				\
48      if (rs6000_explicit_options.long_double)				\
49	warning (0, "soft-float and long-double-128 are incompatible");	\
50    }									\
51  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
52    {									\
53      error ("-maix64 required: 64-bit computation with 32-bit addressing not yet supported"); \
54    }									\
55} while (0);
56
57#undef ASM_SPEC
58#define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
59
60/* Common ASM definitions used by ASM_SPEC amongst the various targets
61   for handling -mcpu=xxx switches.  */
62#undef ASM_CPU_SPEC
63#define ASM_CPU_SPEC \
64"%{!mcpu*: %{!maix64: \
65  %{mpowerpc64: -mppc64} \
66  %{!mpower64: %(asm_default)}}} \
67%{mcpu=power3: -m620} \
68%{mcpu=power4: -m620} \
69%{mcpu=power5: -m620} \
70%{mcpu=power5+: -m620} \
71%{mcpu=power6: -m620} \
72%{mcpu=powerpc: -mppc} \
73%{mcpu=rs64a: -mppc} \
74%{mcpu=603: -m603} \
75%{mcpu=603e: -m603} \
76%{mcpu=604: -m604} \
77%{mcpu=604e: -m604} \
78%{mcpu=620: -m620} \
79%{mcpu=630: -m620} \
80%{mcpu=970: -m620} \
81%{mcpu=G5: -m620}"
82
83#undef	ASM_DEFAULT_SPEC
84#define ASM_DEFAULT_SPEC "-mppc"
85
86#undef TARGET_OS_CPP_BUILTINS
87#define TARGET_OS_CPP_BUILTINS()     \
88  do                                 \
89    {                                \
90      builtin_define ("_AIX43");     \
91      builtin_define ("_AIX51");     \
92      builtin_define ("_AIX52");     \
93      TARGET_OS_AIX_CPP_BUILTINS (); \
94    }                                \
95  while (0)
96
97#undef CPP_SPEC
98#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}	\
99  %{ansi: -D_ANSI_C_SOURCE}			\
100  %{maix64: -D__64BIT__}			\
101  %{mpe: -I/usr/lpp/ppe.poe/include}		\
102  %{pthread: -D_THREAD_SAFE}"
103
104/* The GNU C++ standard library requires that these macros be
105   defined.  Synchronize with libstdc++ os_defines.h.  */
106#undef CPLUSPLUS_CPP_SPEC
107#define CPLUSPLUS_CPP_SPEC			\
108  "-D_ALL_SOURCE				\
109   %{maix64: -D__64BIT__}			\
110   %{mpe: -I/usr/lpp/ppe.poe/include}		\
111   %{pthread: -D_THREAD_SAFE}"
112
113#undef  TARGET_DEFAULT
114#define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
115
116#undef  PROCESSOR_DEFAULT
117#define PROCESSOR_DEFAULT PROCESSOR_POWER4
118#undef  PROCESSOR_DEFAULT64
119#define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
120
121#undef  TARGET_POWER
122#define TARGET_POWER 0
123
124/* Define this macro as a C expression for the initializer of an
125   array of string to tell the driver program which options are
126   defaults for this target and thus do not need to be handled
127   specially when using `MULTILIB_OPTIONS'.
128
129   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
130   the target makefile fragment or if none of the options listed in
131   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
132
133#undef	MULTILIB_DEFAULTS
134
135#undef LIB_SPEC
136#define LIB_SPEC "%{pg:-L/lib/profiled -L/usr/lib/profiled}\
137   %{p:-L/lib/profiled -L/usr/lib/profiled}\
138   %{!maix64:%{!shared:%{g*:-lg}}}\
139   %{mpe:-L/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
140   %{pthread:-lpthreads} -lc"
141
142#undef LINK_SPEC
143#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro} -bnodelcsect\
144   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
145   %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
146   %{mpe:-binitfini:poe_remote_main}"
147
148#undef STARTFILE_SPEC
149#define STARTFILE_SPEC "%{!shared:\
150   %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
151   %{!maix64:\
152     %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
153     %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}"
154
155/* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
156
157#undef PTRDIFF_TYPE
158#define PTRDIFF_TYPE "long int"
159
160/* Type used for wchar_t, as a string used in a declaration.  */
161#undef  WCHAR_TYPE
162#define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
163
164/* Width of wchar_t in bits.  */
165#undef  WCHAR_TYPE_SIZE
166#define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
167
168/* AIX V5 uses PowerPC nop (ori 0,0,0) instruction as call glue for PowerPC
169   and "cror 31,31,31" for POWER architecture.  */
170
171#undef RS6000_CALL_GLUE
172#define RS6000_CALL_GLUE "{cror 31,31,31|nop}"
173
174/* AIX 4.2 and above provides initialization and finalization function
175   support from linker command line.  */
176#undef HAS_INIT_SECTION
177#define HAS_INIT_SECTION
178
179#undef LD_INIT_SWITCH
180#define LD_INIT_SWITCH "-binitfini"
181
182/* AIX 5.2 has the float and long double forms of math functions.  */
183#undef TARGET_C99_FUNCTIONS
184#define TARGET_C99_FUNCTIONS  1
185
186#ifndef _AIX52
187extern long long int    atoll(const char *);
188#endif
189
190/* This target uses the aix64.opt file.  */
191#define TARGET_USES_AIX64_OPT 1
192