/[pcsx2_0.9.7]/trunk/common/include/Pcsx2Defs.h
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Annotation of /trunk/common/include/Pcsx2Defs.h

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Revision 31 - (hide annotations) (download)
Tue Sep 7 03:24:11 2010 UTC (9 years, 11 months ago) by william
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committing r3113 initial commit again...
1 william 31 /* PCSX2 - PS2 Emulator for PCs
2     * Copyright (C) 2002-2010 PCSX2 Dev Team
3     *
4     * PCSX2 is free software: you can redistribute it and/or modify it under the terms
5     * of the GNU Lesser General Public License as published by the Free Software Found-
6     * ation, either version 3 of the License, or (at your option) any later version.
7     *
8     * PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
9     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
10     * PURPOSE. See the GNU General Public License for more details.
11     *
12     * You should have received a copy of the GNU General Public License along with PCSX2.
13     * If not, see <http://www.gnu.org/licenses/>.
14     */
15    
16     #ifndef __PCSX2DEFS_H__
17     #define __PCSX2DEFS_H__
18    
19     // Indicate that this is the wx port to the plugins.
20     #define WX_PCSX2
21    
22     // some distributions are lower case
23     #if defined (__linux__) || defined(__CYGWIN__)
24     #if !defined(__LINUX__)
25     # define __LINUX__
26     #endif
27     #endif
28    
29     #include "Pcsx2Types.h"
30    
31     #ifdef _MSC_VER
32     # include <intrin.h>
33     #else
34     # include <intrin_x86.h>
35     #endif
36    
37     // Renamed ARRAYSIZE to ArraySize -- looks nice and gets rid of Windows.h conflicts (air)
38     // Notes: I'd have used ARRAY_SIZE instead but ran into cross-platform lib conflicts with
39     // that as well. >_<
40     #ifndef ArraySize
41     # define ArraySize(x) (sizeof(x)/sizeof((x)[0]))
42     #endif
43    
44     //////////////////////////////////////////////////////////////////////////////////////////
45     // __releaseinline -- a forceinline macro that is enabled for RELEASE/PUBLIC builds ONLY.
46     // This is useful because forceinline can make certain types of debugging problematic since
47     // functions that look like they should be called won't breakpoint since their code is
48     // inlined, and it can make stack traces confusing or near useless.
49     //
50     // Use __releaseinline for things which are generally large functions where trace debugging
51     // from Devel builds is likely useful; but which should be inlined in an optimized Release
52     // environment.
53     //
54     #ifdef PCSX2_DEVBUILD
55     # define __releaseinline
56     #else
57     # define __releaseinline __forceinline
58     #endif
59    
60     //////////////////////////////////////////////////////////////////////////////////////////
61     // jASSUME - give hints to the optimizer
62     // This is primarily useful for the default case switch optimizer, which enables VC to
63     // generate more compact switches.
64     //
65     // Note: When using the PCSX2 Utilities library, this is deprecated. Use pxAssert instead,
66     // which itself optimizes to an __assume() hint in release mode builds.
67     //
68     #ifndef jASSUME
69     # ifdef NDEBUG
70     # define jBREAKPOINT() ((void) 0)
71     # ifdef _MSC_VER
72     # define jASSUME(exp) (__assume(exp))
73     # else
74     # define jASSUME(exp) ((void) sizeof(exp))
75     # endif
76     # else
77     # define jBREAKPOINT() __debugbreak();
78     # ifdef wxASSERT
79     # define jASSUME(exp) wxASSERT(exp)
80     # else
81     # define jASSUME(exp) do { if(exp) ; else jBREAKPOINT(); } while(0);
82     # endif
83     # endif
84     #endif
85    
86     //////////////////////////////////////////////////////////////////////////////////////////
87     // compile-time assertion; usable at static variable define level.
88     // (typically used to confirm the correct sizeof() for struct types where size
89     // restaints must be enforced).
90     //
91     #ifndef C_ASSERT
92     # define C_ASSERT(e) typedef char __C_ASSERT__[(e)?1:-1]
93     #endif
94    
95     //////////////////////////////////////////////////////////////////////////////////////////
96     // Dev / Debug conditionals - Consts for using if() statements instead of uglier #ifdef.
97     //
98     // Note: Using if() optimizes nicely in Devel and Release builds, but will generate extra
99     // code overhead in debug builds (since debug neither inlines, nor optimizes out const-
100     // level conditionals). Normally not a concern, but if you stick if( IsDevbuild ) in
101     // some tight loops it will likely make debug builds unusably slow.
102     //
103     #ifdef __cplusplus
104     # ifdef PCSX2_DEVBUILD
105     static const bool IsDevBuild = true;
106     # else
107     static const bool IsDevBuild = false;
108     # endif
109    
110     # ifdef PCSX2_DEBUG
111     static const bool IsDebugBuild = true;
112     # else
113     static const bool IsDebugBuild = false;
114     # endif
115    
116     #else
117    
118     # ifdef PCSX2_DEVBUILD
119     static const u8 IsDevBuild = 1;
120     # else
121     static const u8 IsDevBuild = 0;
122     # endif
123    
124     # ifdef PCSX2_DEBUG
125     static const u8 IsDebugBuild = 1;
126     # else
127     static const u8 IsDebugBuild = 0;
128     # endif
129     #endif
130    
131     #ifdef PCSX2_DEBUG
132     # define pxDebugCode(code) code
133     #else
134     # define pxDebugCode(code)
135     #endif
136    
137    
138     //////////////////////////////////////////////////////////////////////////////////////////
139     // __aligned / __aligned16 / __pagealigned
140     //
141     // GCC Warning! The GCC linker (LD) typically fails to assure alignment of class members.
142     // If you want alignment to be assured, the variable must either be a member of a struct
143     // or a static global.
144     //
145     // __pagealigned is equivalent to __aligned(0x1000), and is used to align a dynarec code
146     // buffer to a page boundary (allows the use of execution-enabled mprotect).
147     //
148     // General Performance Warning: Any function that specifies alignment on a local (stack)
149     // variable will have to align the stack frame on enter, and restore it on exit (adds
150     // overhead). Furthermore, compilers cannot inline functions that have aligned local
151     // vars. So use local var alignment with much caution.
152     //
153    
154     // Defines the memory page size for the target platform at compilation. All supported platforms
155     // (which means Intel only right now) have a 4k granularity.
156     #define PCSX2_PAGESIZE 0x1000
157     static const int __pagesize = PCSX2_PAGESIZE;
158    
159     //////////////////////////////////////////////////////////////////////////////////////////
160     // Structure Packing (__packed)
161     //
162     // Current Method:
163     // Use a combination of embedded compiler-specific #pragma mess in conjunction with a
164     // __packed macro. The former appeases the MSVC gods, the latter appeases the GCC gods.
165     // The end result looks something like this:
166     //
167     // #ifdef _MSC_VER
168     // # pragma pack(1)
169     // #endif
170     //
171     // struct SomeKindaFail {
172     // u8 neat;
173     // u32 unaligned32;
174     // } __packed;
175     //
176     // MSVC 2008 and better support __pragma, however there's no way to support that in
177     // a way that's backwards compatible to VS 2005, without still including the old-style
178     // #pragma mess. So there's really not much point (yet) in using it. I've included macros
179     // that utilize __pragma (commented out below) which can be deployed at a time when we
180     // are ok with the idea of completely breaking backwards compat with VC2005/prior.
181     //
182    
183     // --------------------------------------------------------------------------------------
184     // Microsoft Visual Studio
185     // --------------------------------------------------------------------------------------
186     #ifdef _MSC_VER
187    
188     // Using these breaks compat with VC2005; so we're not using it yet.
189     //# define __pack_begin __pragma(pack(1))
190     //# define __pack_end __pragma(pack())
191    
192     // This is the 2005/earlier compatible packing define, which must be used in conjunction
193     // with #ifdef _MSC_VER/#pragma pack() directives (ugly).
194     # define __packed
195    
196     # define __aligned(alig) __declspec(align(alig))
197     # define __aligned16 __declspec(align(16))
198     # define __pagealigned __declspec(align(PCSX2_PAGESIZE))
199    
200     // Deprecated; use __align instead.
201     # define PCSX2_ALIGNED(alig,x) __declspec(align(alig)) x
202     # define PCSX2_ALIGNED_EXTERN(alig,x) extern __declspec(align(alig)) x
203     # define PCSX2_ALIGNED16(x) __declspec(align(16)) x
204     # define PCSX2_ALIGNED16_EXTERN(x) extern __declspec(align(16)) x
205    
206     # define __naked __declspec(naked)
207     # define __noinline __declspec(noinline)
208     # define __threadlocal __declspec(thread)
209    
210     // Don't know if there are Visual C++ equivalents of these.
211     # define __hot
212     # define __cold
213     # define likely(x) (!!(x))
214     # define unlikely(x) (!!(x))
215    
216     # define CALLBACK __stdcall
217    
218     #else
219    
220     // --------------------------------------------------------------------------------------
221     // GCC / Intel Compilers Section
222     // --------------------------------------------------------------------------------------
223    
224     # define __packed __attribute__((packed))
225    
226     # define __aligned(alig) __attribute__((aligned(alig)))
227     # define __aligned16 __attribute__((aligned(16)))
228     # define __pagealigned __attribute__((aligned(PCSX2_PAGESIZE)))
229     // Deprecated; use __align instead.
230     # define PCSX2_ALIGNED(alig,x) x __attribute((aligned(alig)))
231     # define PCSX2_ALIGNED16(x) x __attribute((aligned(16)))
232     # define PCSX2_ALIGNED_EXTERN(alig,x) extern x __attribute((aligned(alig)))
233     # define PCSX2_ALIGNED16_EXTERN(x) extern x __attribute((aligned(16)))
234    
235     # define __naked // GCC lacks the naked specifier
236     # define __assume(cond) ((void)0) // GCC has no equivalent for __assume
237     # define CALLBACK __attribute__((stdcall))
238    
239     // Inlining note: GCC needs ((unused)) attributes defined on inlined functions to suppress
240     // warnings when a static inlined function isn't used in the scope of a single file (which
241     // happens *by design* like all the friggen time >_<)
242    
243     # define __fastcall __attribute__((fastcall))
244     # define _inline __inline__ __attribute__((unused))
245     # ifdef NDEBUG
246     # define __forceinline __attribute__((always_inline,unused))
247     # else
248     # define __forceinline __attribute__((unused))
249     # endif
250     # define __noinline __attribute__((noinline))
251     # define __hot __attribute__((hot))
252     # define __cold __attribute__((cold))
253     # define __threadlocal __thread
254     # define likely(x) __builtin_expect(!!(x), 1)
255     # define unlikely(x) __builtin_expect(!!(x), 0)
256     #endif
257    
258     // --------------------------------------------------------------------------------------
259     // GNU C/C++ Specific Defines
260     // --------------------------------------------------------------------------------------
261     #ifdef __GNUC__
262    
263     // GCC 4.4.0 is a bit nutty, as compilers go. it gets a define to itself.
264     # define GCC_VERSION ( __GNUC__ * 10000 \
265     + __GNUC_MINOR__ * 100 \
266     + __GNUC_PATCHLEVEL__)
267    
268     // Test for GCC > 4.4.0; Should be adjusted when new versions come out
269     # if GCC_VERSION >= 40400
270     # define THE_UNBEARABLE_LIGHTNESS_OF_BEING_GCC_4_4_0
271     # define __nooptimization __attribute__((optimize("O0")))
272     # endif
273    
274     // This theoretically unoptimizes. Not having much luck so far.
275     /*
276     # ifdef THE_UNBEARABLE_LIGHTNESS_OF_BEING_GCC_4_4_0
277     # pragma GCC optimize ("O0")
278     # endif
279    
280     # ifdef THE_UNBEARABLE_LIGHTNESS_OF_BEING_GCC_4_4_0
281     # pragma GCC reset_options
282     # endif
283     */
284    
285     #endif // end GCC-specific section.
286    
287     #ifndef THE_UNBEARABLE_LIGHTNESS_OF_BEING_GCC_4_4_0
288     # define __nooptimization
289     #endif
290    
291    
292     #endif

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