1 /* -----------------------------------------------------------------*-C-*-
2 ffitarget.h - Copyright (c) 2012 Anthony Green
3 Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc
4 Copyright (c) 1996-2003 Red Hat, Inc.
5
6 Target configuration macros for PowerPC.
7
8 Permission is hereby granted, free of charge, to any person obtaining
9 a copy of this software and associated documentation files (the
10 ``Software''), to deal in the Software without restriction, including
11 without limitation the rights to use, copy, modify, merge, publish,
12 distribute, sublicense, and/or sell copies of the Software, and to
13 permit persons to whom the Software is furnished to do so, subject to
14 the following conditions:
15
16 The above copyright notice and this permission notice shall be included
17 in all copies or substantial portions of the Software.
18
19 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
23 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
24 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 DEALINGS IN THE SOFTWARE.
27
28 ----------------------------------------------------------------------- */
29
30 #ifndef LIBFFI_TARGET_H
31 #define LIBFFI_TARGET_H
32
33 #ifndef LIBFFI_H
34 #error "Please do not include ffitarget.h directly into your source. Use ffi.h instead."
35 #endif
36
37 /* ---- System specific configurations ----------------------------------- */
38
39 #if defined (POWERPC) && defined (__powerpc64__) /* linux64 */
40 #ifndef POWERPC64
41 #define POWERPC64
42 #endif
43 #elif defined (POWERPC_DARWIN) && defined (__ppc64__) /* Darwin64 */
44 #ifndef POWERPC64
45 #define POWERPC64
46 #endif
47 #ifndef POWERPC_DARWIN64
48 #define POWERPC_DARWIN64
49 #endif
50 #elif defined (POWERPC_AIX) && defined (__64BIT__) /* AIX64 */
51 #ifndef POWERPC64
52 #define POWERPC64
53 #endif
54 #endif
55
56 #ifndef LIBFFI_ASM
57 typedef unsigned long ffi_arg;
58 typedef signed long ffi_sarg;
59
60 typedef enum ffi_abi {
61 FFI_FIRST_ABI = 0,
62
63 #if defined (POWERPC_AIX)
64 FFI_AIX,
65 FFI_DARWIN,
66 FFI_DEFAULT_ABI = FFI_AIX,
67 FFI_LAST_ABI
68
69 #elif defined (POWERPC_DARWIN)
70 FFI_AIX,
71 FFI_DARWIN,
72 FFI_DEFAULT_ABI = FFI_DARWIN,
73 FFI_LAST_ABI
74
75 #else
76 /* The FFI_COMPAT values are used by old code. Since libffi may be
77 a shared library we have to support old values for backwards
78 compatibility. */
79 FFI_COMPAT_SYSV,
80 FFI_COMPAT_GCC_SYSV,
81 FFI_COMPAT_LINUX64,
82 FFI_COMPAT_LINUX,
83 FFI_COMPAT_LINUX_SOFT_FLOAT,
84
85 # if defined (POWERPC64)
86 /* This bit, always set in new code, must not be set in any of the
87 old FFI_COMPAT values that might be used for 64-bit linux. We
88 only need worry about FFI_COMPAT_LINUX64, but to be safe avoid
89 all old values. */
90 FFI_LINUX = 8,
91 /* This and following bits can reuse FFI_COMPAT values. */
92 FFI_LINUX_STRUCT_ALIGN = 1,
93 FFI_LINUX_LONG_DOUBLE_128 = 2,
94 FFI_LINUX_LONG_DOUBLE_IEEE128 = 4,
95 FFI_DEFAULT_ABI = (FFI_LINUX
96 # ifdef __STRUCT_PARM_ALIGN__
97 | FFI_LINUX_STRUCT_ALIGN
98 # endif
99 # ifdef __LONG_DOUBLE_128__
100 | FFI_LINUX_LONG_DOUBLE_128
101 # ifdef __LONG_DOUBLE_IEEE128__
102 | FFI_LINUX_LONG_DOUBLE_IEEE128
103 # endif
104 # endif
105 ),
106 FFI_LAST_ABI = 16
107
108 # else
109 /* This bit, always set in new code, must not be set in any of the
110 old FFI_COMPAT values that might be used for 32-bit linux/sysv/bsd. */
111 FFI_SYSV = 8,
112 /* This and following bits can reuse FFI_COMPAT values. */
113 FFI_SYSV_SOFT_FLOAT = 1,
114 FFI_SYSV_STRUCT_RET = 2,
115 FFI_SYSV_IBM_LONG_DOUBLE = 4,
116 FFI_SYSV_LONG_DOUBLE_128 = 16,
117
118 FFI_DEFAULT_ABI = (FFI_SYSV
119 # ifdef __NO_FPRS__
120 | FFI_SYSV_SOFT_FLOAT
121 # endif
122 # if (defined (__SVR4_STRUCT_RETURN) \
123 || defined (POWERPC_FREEBSD) && !defined (__AIX_STRUCT_RETURN))
124 | FFI_SYSV_STRUCT_RET
125 # endif
126 # if __LDBL_MANT_DIG__ == 106
127 | FFI_SYSV_IBM_LONG_DOUBLE
128 # endif
129 # ifdef __LONG_DOUBLE_128__
130 | FFI_SYSV_LONG_DOUBLE_128
131 # endif
132 ),
133 FFI_LAST_ABI = 32
134 # endif
135 #endif
136
137 } ffi_abi;
138 #endif
139
140 /* ---- Definitions for closures ----------------------------------------- */
141
142 #define FFI_CLOSURES 1
143 #define FFI_NATIVE_RAW_API 0
144 #if defined (POWERPC) || defined (POWERPC_FREEBSD)
145 # define FFI_GO_CLOSURES 1
146 # define FFI_TARGET_SPECIFIC_VARIADIC 1
147 # define FFI_EXTRA_CIF_FIELDS unsigned nfixedargs
148 #endif
149 #if defined (POWERPC_AIX)
150 # define FFI_GO_CLOSURES 1
151 #endif
152
153 /* ppc_closure.S and linux64_closure.S expect this. */
154 #define FFI_PPC_TYPE_LAST FFI_TYPE_POINTER
155
156 /* We define additional types below. If generic types are added that
157 must be supported by powerpc libffi then it is likely that
158 FFI_PPC_TYPE_LAST needs increasing *and* the jump tables in
159 ppc_closure.S and linux64_closure.S be extended. */
160
161 #if !(FFI_TYPE_LAST == FFI_PPC_TYPE_LAST \
162 || (FFI_TYPE_LAST == FFI_TYPE_COMPLEX \
163 && !defined FFI_TARGET_HAS_COMPLEX_TYPE))
164 # error "You likely have a broken powerpc libffi"
165 #endif
166
167 /* Needed for soft-float long-double-128 support. */
168 #define FFI_TYPE_UINT128 (FFI_PPC_TYPE_LAST + 1)
169
170 /* Needed for FFI_SYSV small structure returns. */
171 #define FFI_SYSV_TYPE_SMALL_STRUCT (FFI_PPC_TYPE_LAST + 2)
172
173 /* Used by ELFv2 for homogenous structure returns. */
174 #define FFI_V2_TYPE_VECTOR (FFI_PPC_TYPE_LAST + 1)
175 #define FFI_V2_TYPE_VECTOR_HOMOG (FFI_PPC_TYPE_LAST + 2)
176 #define FFI_V2_TYPE_FLOAT_HOMOG (FFI_PPC_TYPE_LAST + 3)
177 #define FFI_V2_TYPE_DOUBLE_HOMOG (FFI_PPC_TYPE_LAST + 4)
178 #define FFI_V2_TYPE_SMALL_STRUCT (FFI_PPC_TYPE_LAST + 5)
179
180 #if _CALL_ELF == 2
181 # define FFI_TRAMPOLINE_SIZE 32
182 #else
183 # if defined(POWERPC64) || defined(POWERPC_AIX)
184 # if defined(POWERPC_DARWIN64)
185 # define FFI_TRAMPOLINE_SIZE 48
186 # else
187 # define FFI_TRAMPOLINE_SIZE 24
188 # endif
189 # else /* POWERPC || POWERPC_AIX */
190 # define FFI_TRAMPOLINE_SIZE 40
191 # endif
192 #endif
193
194 #ifndef LIBFFI_ASM
195 #if defined(POWERPC_DARWIN) || defined(POWERPC_AIX)
196 struct ffi_aix_trampoline_struct {
197 void * code_pointer; /* Pointer to ffi_closure_ASM */
198 void * toc; /* TOC */
199 void * static_chain; /* Pointer to closure */
200 };
201 #endif
202 #endif
203
204 #endif