yum-mirror/slang

Making it easier to work with shaders

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1#ifndef SLANG_LLVM_H
2#define SLANG_LLVM_H
3
4// TODO(JS):
5// Disable exception declspecs, as not supported on LLVM without some extra options.
6// We could enable with `-fms-extensions`
7#define SLANG_DISABLE_EXCEPTIONS 1
8
9#ifndef SLANG_PRELUDE_ASSERT
10#ifdef SLANG_PRELUDE_ENABLE_ASSERT
11extern "C" void assertFailure(const char* msg);
12#define SLANG_PRELUDE_EXPECT(VALUE, MSG) \
13    if (VALUE)                           \
14    {                                    \
15    }                                    \
16    else                                 \
17        assertFailure("assertion failed: '" MSG "'")
18#define SLANG_PRELUDE_ASSERT(VALUE) SLANG_PRELUDE_EXPECT(VALUE, #VALUE)
19#else // SLANG_PRELUDE_ENABLE_ASSERT
20#define SLANG_PRELUDE_EXPECT(VALUE, MSG)
21#define SLANG_PRELUDE_ASSERT(x)
22#endif // SLANG_PRELUDE_ENABLE_ASSERT
23#endif
24
25/*
26Taken from stddef.h
27*/
28
29typedef __PTRDIFF_TYPE__ ptrdiff_t;
30typedef __SIZE_TYPE__ size_t;
31typedef __SIZE_TYPE__ rsize_t;
32
33// typedef __WCHAR_TYPE__ wchar_t;
34
35#if defined(__need_NULL)
36#undef NULL
37#ifdef __cplusplus
38#if !defined(__MINGW32__) && !defined(_MSC_VER)
39#define NULL __null
40#else
41#define NULL 0
42#endif
43#else
44#define NULL ((void*)0)
45#endif
46#ifdef __cplusplus
47#if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
48namespace std
49{
50typedef decltype(nullptr) nullptr_t;
51}
52using ::std::nullptr_t;
53#endif
54#endif
55#undef __need_NULL
56#endif /* defined(__need_NULL) */
57
58
59/*
60The following are taken verbatim from stdint.h from Clang in LLVM. Only 8/16/32/64 types are needed.
61*/
62
63// LLVM/Clang types such that we can use LLVM/Clang without headers for C++ output from Slang
64
65#ifdef __INT64_TYPE__
66#ifndef __int8_t_defined /* glibc sys/types.h also defines int64_t*/
67typedef __INT64_TYPE__ int64_t;
68#endif /* __int8_t_defined */
69typedef __UINT64_TYPE__ uint64_t;
70#define __int_least64_t int64_t
71#define __uint_least64_t uint64_t
72#endif /* __INT64_TYPE__ */
73
74#ifdef __int_least64_t
75typedef __int_least64_t int_least64_t;
76typedef __uint_least64_t uint_least64_t;
77typedef __int_least64_t int_fast64_t;
78typedef __uint_least64_t uint_fast64_t;
79#endif /* __int_least64_t */
80
81#ifdef __INT32_TYPE__
82
83#ifndef __int8_t_defined /* glibc sys/types.h also defines int32_t*/
84typedef __INT32_TYPE__ int32_t;
85#endif /* __int8_t_defined */
86
87#ifndef __uint32_t_defined /* more glibc compatibility */
88#define __uint32_t_defined
89typedef __UINT32_TYPE__ uint32_t;
90#endif /* __uint32_t_defined */
91
92#define __int_least32_t int32_t
93#define __uint_least32_t uint32_t
94#endif /* __INT32_TYPE__ */
95
96#ifdef __int_least32_t
97typedef __int_least32_t int_least32_t;
98typedef __uint_least32_t uint_least32_t;
99typedef __int_least32_t int_fast32_t;
100typedef __uint_least32_t uint_fast32_t;
101#endif /* __int_least32_t */
102
103#ifdef __INT16_TYPE__
104#ifndef __int8_t_defined /* glibc sys/types.h also defines int16_t*/
105typedef __INT16_TYPE__ int16_t;
106#endif /* __int8_t_defined */
107typedef __UINT16_TYPE__ uint16_t;
108#define __int_least16_t int16_t
109#define __uint_least16_t uint16_t
110#endif /* __INT16_TYPE__ */
111
112#ifdef __int_least16_t
113typedef __int_least16_t int_least16_t;
114typedef __uint_least16_t uint_least16_t;
115typedef __int_least16_t int_fast16_t;
116typedef __uint_least16_t uint_fast16_t;
117#endif /* __int_least16_t */
118
119#ifdef __INT8_TYPE__
120#ifndef __int8_t_defined /* glibc sys/types.h also defines int8_t*/
121typedef __INT8_TYPE__ int8_t;
122#endif /* __int8_t_defined */
123typedef __UINT8_TYPE__ uint8_t;
124#define __int_least8_t int8_t
125#define __uint_least8_t uint8_t
126#endif /* __INT8_TYPE__ */
127
128#ifdef __int_least8_t
129typedef __int_least8_t int_least8_t;
130typedef __uint_least8_t uint_least8_t;
131typedef __int_least8_t int_fast8_t;
132typedef __uint_least8_t uint_fast8_t;
133#endif /* __int_least8_t */
134
135/* prevent glibc sys/types.h from defining conflicting types */
136#ifndef __int8_t_defined
137#define __int8_t_defined
138#endif /* __int8_t_defined */
139
140/* C99 7.18.1.4 Integer types capable of holding object pointers.
141 */
142#define __stdint_join3(a, b, c) a##b##c
143
144#ifndef _INTPTR_T
145#ifndef __intptr_t_defined
146typedef __INTPTR_TYPE__ intptr_t;
147#define __intptr_t_defined
148#define _INTPTR_T
149#endif
150#endif
151
152#ifndef _UINTPTR_T
153typedef __UINTPTR_TYPE__ uintptr_t;
154#define _UINTPTR_T
155#endif
156
157/* C99 7.18.1.5 Greatest-width integer types.
158 */
159typedef __INTMAX_TYPE__ intmax_t;
160typedef __UINTMAX_TYPE__ uintmax_t;
161
162/* C99 7.18.4 Macros for minimum-width integer constants.
163 *
164 * The standard requires that integer constant macros be defined for all the
165 * minimum-width types defined above. As 8-, 16-, 32-, and 64-bit minimum-width
166 * types are required, the corresponding integer constant macros are defined
167 * here. This implementation also defines minimum-width types for every other
168 * integer width that the target implements, so corresponding macros are
169 * defined below, too.
170 *
171 * These macros are defined using the same successive-shrinking approach as
172 * the type definitions above. It is likewise important that macros are defined
173 * in order of decending width.
174 *
175 * Note that C++ should not check __STDC_CONSTANT_MACROS here, contrary to the
176 * claims of the C standard (see C++ 18.3.1p2, [cstdint.syn]).
177 */
178
179#define __int_c_join(a, b) a##b
180#define __int_c(v, suffix) __int_c_join(v, suffix)
181#define __uint_c(v, suffix) __int_c_join(v##U, suffix)
182
183#ifdef __INT64_TYPE__
184#ifdef __INT64_C_SUFFIX__
185#define __int64_c_suffix __INT64_C_SUFFIX__
186#else
187#undef __int64_c_suffix
188#endif /* __INT64_C_SUFFIX__ */
189#endif /* __INT64_TYPE__ */
190
191#ifdef __int_least64_t
192#ifdef __int64_c_suffix
193#define INT64_C(v) __int_c(v, __int64_c_suffix)
194#define UINT64_C(v) __uint_c(v, __int64_c_suffix)
195#else
196#define INT64_C(v) v
197#define UINT64_C(v) v##U
198#endif /* __int64_c_suffix */
199#endif /* __int_least64_t */
200
201
202#ifdef __INT32_TYPE__
203#ifdef __INT32_C_SUFFIX__
204#define __int32_c_suffix __INT32_C_SUFFIX__
205#else
206#undef __int32_c_suffix
207#endif /* __INT32_C_SUFFIX__ */
208#endif /* __INT32_TYPE__ */
209
210#ifdef __int_least32_t
211#ifdef __int32_c_suffix
212#define INT32_C(v) __int_c(v, __int32_c_suffix)
213#define UINT32_C(v) __uint_c(v, __int32_c_suffix)
214#else
215#define INT32_C(v) v
216#define UINT32_C(v) v##U
217#endif /* __int32_c_suffix */
218#endif /* __int_least32_t */
219
220#ifdef __INT16_TYPE__
221#ifdef __INT16_C_SUFFIX__
222#define __int16_c_suffix __INT16_C_SUFFIX__
223#else
224#undef __int16_c_suffix
225#endif /* __INT16_C_SUFFIX__ */
226#endif /* __INT16_TYPE__ */
227
228#ifdef __int_least16_t
229#ifdef __int16_c_suffix
230#define INT16_C(v) __int_c(v, __int16_c_suffix)
231#define UINT16_C(v) __uint_c(v, __int16_c_suffix)
232#else
233#define INT16_C(v) v
234#define UINT16_C(v) v##U
235#endif /* __int16_c_suffix */
236#endif /* __int_least16_t */
237
238
239#ifdef __INT8_TYPE__
240#ifdef __INT8_C_SUFFIX__
241#define __int8_c_suffix __INT8_C_SUFFIX__
242#else
243#undef __int8_c_suffix
244#endif /* __INT8_C_SUFFIX__ */
245#endif /* __INT8_TYPE__ */
246
247#ifdef __int_least8_t
248#ifdef __int8_c_suffix
249#define INT8_C(v) __int_c(v, __int8_c_suffix)
250#define UINT8_C(v) __uint_c(v, __int8_c_suffix)
251#else
252#define INT8_C(v) v
253#define UINT8_C(v) v##U
254#endif /* __int8_c_suffix */
255#endif /* __int_least8_t */
256
257/* C99 7.18.2.1 Limits of exact-width integer types.
258 * C99 7.18.2.2 Limits of minimum-width integer types.
259 * C99 7.18.2.3 Limits of fastest minimum-width integer types.
260 *
261 * The presence of limit macros are completely optional in C99.  This
262 * implementation defines limits for all of the types (exact- and
263 * minimum-width) that it defines above, using the limits of the minimum-width
264 * type for any types that do not have exact-width representations.
265 *
266 * As in the type definitions, this section takes an approach of
267 * successive-shrinking to determine which limits to use for the standard (8,
268 * 16, 32, 64) bit widths when they don't have exact representations. It is
269 * therefore important that the definitions be kept in order of decending
270 * widths.
271 *
272 * Note that C++ should not check __STDC_LIMIT_MACROS here, contrary to the
273 * claims of the C standard (see C++ 18.3.1p2, [cstdint.syn]).
274 */
275
276#ifdef __INT64_TYPE__
277#define INT64_MAX INT64_C(9223372036854775807)
278#define INT64_MIN (-INT64_C(9223372036854775807) - 1)
279#define UINT64_MAX UINT64_C(18446744073709551615)
280#define __INT_LEAST64_MIN INT64_MIN
281#define __INT_LEAST64_MAX INT64_MAX
282#define __UINT_LEAST64_MAX UINT64_MAX
283#endif /* __INT64_TYPE__ */
284
285#ifdef __INT_LEAST64_MIN
286#define INT_LEAST64_MIN __INT_LEAST64_MIN
287#define INT_LEAST64_MAX __INT_LEAST64_MAX
288#define UINT_LEAST64_MAX __UINT_LEAST64_MAX
289#define INT_FAST64_MIN __INT_LEAST64_MIN
290#define INT_FAST64_MAX __INT_LEAST64_MAX
291#define UINT_FAST64_MAX __UINT_LEAST64_MAX
292#endif /* __INT_LEAST64_MIN */
293
294#ifdef __INT32_TYPE__
295#define INT32_MAX INT32_C(2147483647)
296#define INT32_MIN (-INT32_C(2147483647) - 1)
297#define UINT32_MAX UINT32_C(4294967295)
298#define __INT_LEAST32_MIN INT32_MIN
299#define __INT_LEAST32_MAX INT32_MAX
300#define __UINT_LEAST32_MAX UINT32_MAX
301#endif /* __INT32_TYPE__ */
302
303#ifdef __INT_LEAST32_MIN
304#define INT_LEAST32_MIN __INT_LEAST32_MIN
305#define INT_LEAST32_MAX __INT_LEAST32_MAX
306#define UINT_LEAST32_MAX __UINT_LEAST32_MAX
307#define INT_FAST32_MIN __INT_LEAST32_MIN
308#define INT_FAST32_MAX __INT_LEAST32_MAX
309#define UINT_FAST32_MAX __UINT_LEAST32_MAX
310#endif /* __INT_LEAST32_MIN */
311
312#ifdef __INT16_TYPE__
313#define INT16_MAX INT16_C(32767)
314#define INT16_MIN (-INT16_C(32767) - 1)
315#define UINT16_MAX UINT16_C(65535)
316#define __INT_LEAST16_MIN INT16_MIN
317#define __INT_LEAST16_MAX INT16_MAX
318#define __UINT_LEAST16_MAX UINT16_MAX
319#endif /* __INT16_TYPE__ */
320
321#ifdef __INT_LEAST16_MIN
322#define INT_LEAST16_MIN __INT_LEAST16_MIN
323#define INT_LEAST16_MAX __INT_LEAST16_MAX
324#define UINT_LEAST16_MAX __UINT_LEAST16_MAX
325#define INT_FAST16_MIN __INT_LEAST16_MIN
326#define INT_FAST16_MAX __INT_LEAST16_MAX
327#define UINT_FAST16_MAX __UINT_LEAST16_MAX
328#endif /* __INT_LEAST16_MIN */
329
330
331#ifdef __INT8_TYPE__
332#define INT8_MAX INT8_C(127)
333#define INT8_MIN (-INT8_C(127) - 1)
334#define UINT8_MAX UINT8_C(255)
335#define __INT_LEAST8_MIN INT8_MIN
336#define __INT_LEAST8_MAX INT8_MAX
337#define __UINT_LEAST8_MAX UINT8_MAX
338#endif /* __INT8_TYPE__ */
339
340#ifdef __INT_LEAST8_MIN
341#define INT_LEAST8_MIN __INT_LEAST8_MIN
342#define INT_LEAST8_MAX __INT_LEAST8_MAX
343#define UINT_LEAST8_MAX __UINT_LEAST8_MAX
344#define INT_FAST8_MIN __INT_LEAST8_MIN
345#define INT_FAST8_MAX __INT_LEAST8_MAX
346#define UINT_FAST8_MAX __UINT_LEAST8_MAX
347#endif /* __INT_LEAST8_MIN */
348
349/* Some utility macros */
350#define __INTN_MIN(n) __stdint_join3(INT, n, _MIN)
351#define __INTN_MAX(n) __stdint_join3(INT, n, _MAX)
352#define __UINTN_MAX(n) __stdint_join3(UINT, n, _MAX)
353#define __INTN_C(n, v) __stdint_join3(INT, n, _C(v))
354#define __UINTN_C(n, v) __stdint_join3(UINT, n, _C(v))
355
356/* C99 7.18.2.4 Limits of integer types capable of holding object pointers. */
357/* C99 7.18.3 Limits of other integer types. */
358
359#define INTPTR_MIN (-__INTPTR_MAX__ - 1)
360#define INTPTR_MAX __INTPTR_MAX__
361#define UINTPTR_MAX __UINTPTR_MAX__
362#define PTRDIFF_MIN (-__PTRDIFF_MAX__ - 1)
363#define PTRDIFF_MAX __PTRDIFF_MAX__
364#define SIZE_MAX __SIZE_MAX__
365
366/* ISO9899:2011 7.20 (C11 Annex K): Define RSIZE_MAX if __STDC_WANT_LIB_EXT1__
367 * is enabled. */
368#if defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1
369#define RSIZE_MAX (SIZE_MAX >> 1)
370#endif
371
372/* C99 7.18.2.5 Limits of greatest-width integer types. */
373#define INTMAX_MIN (-__INTMAX_MAX__ - 1)
374#define INTMAX_MAX __INTMAX_MAX__
375#define UINTMAX_MAX __UINTMAX_MAX__
376
377/* C99 7.18.3 Limits of other integer types. */
378#define SIG_ATOMIC_MIN __INTN_MIN(__SIG_ATOMIC_WIDTH__)
379#define SIG_ATOMIC_MAX __INTN_MAX(__SIG_ATOMIC_WIDTH__)
380#ifdef __WINT_UNSIGNED__
381#define WINT_MIN __UINTN_C(__WINT_WIDTH__, 0)
382#define WINT_MAX __UINTN_MAX(__WINT_WIDTH__)
383#else
384#define WINT_MIN __INTN_MIN(__WINT_WIDTH__)
385#define WINT_MAX __INTN_MAX(__WINT_WIDTH__)
386#endif
387
388#ifndef WCHAR_MAX
389#define WCHAR_MAX __WCHAR_MAX__
390#endif
391#ifndef WCHAR_MIN
392#if __WCHAR_MAX__ == __INTN_MAX(__WCHAR_WIDTH__)
393#define WCHAR_MIN __INTN_MIN(__WCHAR_WIDTH__)
394#else
395#define WCHAR_MIN __UINTN_C(__WCHAR_WIDTH__, 0)
396#endif
397#endif
398
399/* 7.18.4.2 Macros for greatest-width integer constants. */
400#define INTMAX_C(v) __int_c(v, __INTMAX_C_SUFFIX__)
401#define UINTMAX_C(v) __int_c(v, __UINTMAX_C_SUFFIX__)
402
403
404#endif // SLANG_LLVM_H