xref: /illumos-gate/usr/src/uts/common/fs/zfs/lua/luaconf.h (revision dfc11533)
1 /*
2 ** $Id: luaconf.h,v 1.176.1.2 2013/11/21 17:26:16 roberto Exp $
3 ** Configuration file for Lua
4 ** See Copyright Notice in lua.h
5 */
6 
7 
8 #ifndef lconfig_h
9 #define lconfig_h
10 
11 #include <sys/zfs_context.h>
12 
13 #include <sys/int_fmtio.h>
14 
15 extern ssize_t lcompat_sprintf(char *, const char *, ...);
16 extern int64_t lcompat_strtoll(const char *, char **);
17 extern int64_t lcompat_pow(int64_t, int64_t);
18 
19 /*
20 ** ==================================================================
21 ** Search for "@@" to find all configurable definitions.
22 ** ===================================================================
23 */
24 
25 
26 /*
27 @@ LUA_ANSI controls the use of non-ansi features.
28 ** CHANGE it (define it) if you want Lua to avoid the use of any
29 ** non-ansi feature or library.
30 */
31 #if !defined(LUA_ANSI) && defined(__STRICT_ANSI__)
32 #define LUA_ANSI
33 #endif
34 
35 
36 #if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
37 #define LUA_WIN		/* enable goodies for regular Windows platforms */
38 #endif
39 
40 #if defined(LUA_WIN)
41 #define LUA_DL_DLL
42 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
43 #endif
44 
45 
46 
47 #if defined(LUA_USE_LINUX)
48 #define LUA_USE_POSIX
49 #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
50 #define LUA_USE_READLINE	/* needs some extra libraries */
51 #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
52 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
53 #define LUA_USE_LONGLONG	/* assume support for long long */
54 #endif
55 
56 #if defined(LUA_USE_MACOSX)
57 #define LUA_USE_POSIX
58 #define LUA_USE_DLOPEN		/* does not need -ldl */
59 #define LUA_USE_READLINE	/* needs an extra library: -lreadline */
60 #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
61 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
62 #define LUA_USE_LONGLONG	/* assume support for long long */
63 #endif
64 
65 
66 
67 /*
68 @@ LUA_USE_POSIX includes all functionality listed as X/Open System
69 @* Interfaces Extension (XSI).
70 ** CHANGE it (define it) if your system is XSI compatible.
71 */
72 #if defined(LUA_USE_POSIX)
73 #define LUA_USE_MKSTEMP
74 #define LUA_USE_ISATTY
75 #define LUA_USE_POPEN
76 #define LUA_USE_ULONGJMP
77 #define LUA_USE_GMTIME_R
78 #endif
79 
80 
81 
82 /*
83 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
84 @* Lua libraries.
85 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
86 @* C libraries.
87 ** CHANGE them if your machine has a non-conventional directory
88 ** hierarchy or if you want to install your libraries in
89 ** non-conventional directories.
90 */
91 #if defined(_WIN32)	/* { */
92 /*
93 ** In Windows, any exclamation mark ('!') in the path is replaced by the
94 ** path of the directory of the executable file of the current process.
95 */
96 #define LUA_LDIR	"!\\lua\\"
97 #define LUA_CDIR	"!\\"
98 #define LUA_PATH_DEFAULT  \
99 		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
100 		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" ".\\?.lua"
101 #define LUA_CPATH_DEFAULT \
102 		LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll"
103 
104 #else			/* }{ */
105 
106 #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
107 #define LUA_ROOT	"/usr/local/"
108 #define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR
109 #define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR
110 #define LUA_PATH_DEFAULT  \
111 		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
112 		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" "./?.lua"
113 #define LUA_CPATH_DEFAULT \
114 		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
115 #endif			/* } */
116 
117 
118 /*
119 @@ LUA_DIRSEP is the directory separator (for submodules).
120 ** CHANGE it if your machine does not use "/" as the directory separator
121 ** and is not Windows. (On Windows Lua automatically uses "\".)
122 */
123 #if defined(_WIN32)
124 #define LUA_DIRSEP	"\\"
125 #else
126 #define LUA_DIRSEP	"/"
127 #endif
128 
129 
130 /*
131 @@ LUA_ENV is the name of the variable that holds the current
132 @@ environment, used to access global names.
133 ** CHANGE it if you do not like this name.
134 */
135 #define LUA_ENV		"_ENV"
136 
137 
138 /*
139 @@ LUA_API is a mark for all core API functions.
140 @@ LUALIB_API is a mark for all auxiliary library functions.
141 @@ LUAMOD_API is a mark for all standard library opening functions.
142 ** CHANGE them if you need to define those functions in some special way.
143 ** For instance, if you want to create one Windows DLL with the core and
144 ** the libraries, you may want to use the following definition (define
145 ** LUA_BUILD_AS_DLL to get it).
146 */
147 #if defined(LUA_BUILD_AS_DLL)	/* { */
148 
149 #if defined(LUA_CORE) || defined(LUA_LIB)	/* { */
150 #define LUA_API __declspec(dllexport)
151 #else						/* }{ */
152 #define LUA_API __declspec(dllimport)
153 #endif						/* } */
154 
155 #else				/* }{ */
156 
157 #define LUA_API		extern
158 
159 #endif				/* } */
160 
161 
162 /* more often than not the libs go together with the core */
163 #define LUALIB_API	LUA_API
164 #define LUAMOD_API	LUALIB_API
165 
166 
167 /*
168 @@ LUAI_FUNC is a mark for all extern functions that are not to be
169 @* exported to outside modules.
170 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
171 @* that are not to be exported to outside modules (LUAI_DDEF for
172 @* definitions and LUAI_DDEC for declarations).
173 ** CHANGE them if you need to mark them in some special way. Elf/gcc
174 ** (versions 3.2 and later) mark them as "hidden" to optimize access
175 ** when Lua is compiled as a shared library. Not all elf targets support
176 ** this attribute. Unfortunately, gcc does not offer a way to check
177 ** whether the target offers that support, and those without support
178 ** give a warning about it. To avoid these warnings, change to the
179 ** default definition.
180 */
181 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
182     defined(__ELF__)		/* { */
183 #define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
184 #define LUAI_DDEC	LUAI_FUNC
185 #define LUAI_DDEF	/* empty */
186 
187 #else				/* }{ */
188 #define LUAI_FUNC	extern
189 #define LUAI_DDEC	extern
190 #define LUAI_DDEF	/* empty */
191 #endif				/* } */
192 
193 
194 
195 /*
196 @@ LUA_QL describes how error messages quote program elements.
197 ** CHANGE it if you want a different appearance.
198 */
199 #define LUA_QL(x)	"'" x "'"
200 #define LUA_QS		LUA_QL("%s")
201 
202 
203 /*
204 @@ LUA_IDSIZE gives the maximum size for the description of the source
205 @* of a function in debug information.
206 ** CHANGE it if you want a different size.
207 */
208 #define LUA_IDSIZE	60
209 
210 
211 /*
212 @@ luai_writestringerror defines how to print error messages.
213 ** (A format string with one argument is enough for Lua...)
214 */
215 #ifdef _KERNEL
216 #define luai_writestringerror(s,p) \
217 	(zfs_dbgmsg((s), (p)))
218 #else
219 #define luai_writestringerror(s,p) \
220 	(fprintf(stderr, (s), (p)), fflush(stderr))
221 #endif
222 
223 
224 /*
225 @@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
226 ** strings that are internalized. (Cannot be smaller than reserved words
227 ** or tags for metamethods, as these strings must be internalized;
228 ** #("function") = 8, #("__newindex") = 10.)
229 */
230 #define LUAI_MAXSHORTLEN        40
231 
232 
233 
234 /*
235 ** {==================================================================
236 ** Compatibility with previous versions
237 ** ===================================================================
238 */
239 
240 /*
241 @@ LUA_COMPAT_ALL controls all compatibility options.
242 ** You can define it to get all options, or change specific options
243 ** to fit your specific needs.
244 */
245 #if defined(LUA_COMPAT_ALL)	/* { */
246 
247 /*
248 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
249 ** You can replace it with 'table.unpack'.
250 */
251 #define LUA_COMPAT_UNPACK
252 
253 /*
254 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
255 ** You can replace it with 'package.searchers'.
256 */
257 #define LUA_COMPAT_LOADERS
258 
259 /*
260 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
261 ** You can call your C function directly (with light C functions).
262 */
263 #define lua_cpcall(L,f,u)  \
264 	(lua_pushcfunction(L, (f)), \
265 	 lua_pushlightuserdata(L,(u)), \
266 	 lua_pcall(L,1,0,0))
267 
268 
269 /*
270 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
271 ** You can rewrite 'log10(x)' as 'log(x, 10)'.
272 */
273 #define LUA_COMPAT_LOG10
274 
275 /*
276 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
277 ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
278 */
279 #define LUA_COMPAT_LOADSTRING
280 
281 /*
282 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
283 */
284 #define LUA_COMPAT_MAXN
285 
286 /*
287 @@ The following macros supply trivial compatibility for some
288 ** changes in the API. The macros themselves document how to
289 ** change your code to avoid using them.
290 */
291 #define lua_strlen(L,i)		lua_rawlen(L, (i))
292 
293 #define lua_objlen(L,i)		lua_rawlen(L, (i))
294 
295 #define lua_equal(L,idx1,idx2)		lua_compare(L,(idx1),(idx2),LUA_OPEQ)
296 #define lua_lessthan(L,idx1,idx2)	lua_compare(L,(idx1),(idx2),LUA_OPLT)
297 
298 /*
299 @@ LUA_COMPAT_MODULE controls compatibility with previous
300 ** module functions 'module' (Lua) and 'luaL_register' (C).
301 */
302 #define LUA_COMPAT_MODULE
303 
304 #endif				/* } */
305 
306 /* }================================================================== */
307 
308 
309 
310 /*
311 @@ LUAI_BITSINT defines the number of bits in an int.
312 ** CHANGE here if Lua cannot automatically detect the number of bits of
313 ** your machine. Probably you do not need to change this.
314 */
315 /* avoid overflows in comparison */
316 #if INT_MAX-20 < 32760		/* { */
317 #define LUAI_BITSINT	16
318 #elif INT_MAX > 2147483640L	/* }{ */
319 /* int has at least 32 bits */
320 #define LUAI_BITSINT	32
321 #else				/* }{ */
322 #error "you must define LUA_BITSINT with number of bits in an integer"
323 #endif				/* } */
324 
325 
326 /*
327 @@ LUA_INT32 is a signed integer with exactly 32 bits.
328 @@ LUAI_UMEM is an unsigned integer big enough to count the total
329 @* memory used by Lua.
330 @@ LUAI_MEM is a signed integer big enough to count the total memory
331 @* used by Lua.
332 ** CHANGE here if for some weird reason the default definitions are not
333 ** good enough for your machine. Probably you do not need to change
334 ** this.
335 */
336 #if LUAI_BITSINT >= 32		/* { */
337 #define LUA_INT32	int
338 #define LUAI_UMEM	size_t
339 #define LUAI_MEM	ptrdiff_t
340 #else				/* }{ */
341 /* 16-bit ints */
342 #define LUA_INT32	long
343 #define LUAI_UMEM	unsigned long
344 #define LUAI_MEM	long
345 #endif				/* } */
346 
347 
348 /*
349 @@ LUAI_MAXSTACK limits the size of the Lua stack.
350 ** CHANGE it if you need a different limit. This limit is arbitrary;
351 ** its only purpose is to stop Lua from consuming unlimited stack
352 ** space (and to reserve some numbers for pseudo-indices).
353 */
354 #if LUAI_BITSINT >= 32
355 #define LUAI_MAXSTACK		1000000
356 #else
357 #define LUAI_MAXSTACK		15000
358 #endif
359 
360 /* reserve some space for error handling */
361 #define LUAI_FIRSTPSEUDOIDX	(-LUAI_MAXSTACK - 1000)
362 
363 
364 
365 
366 /*
367 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
368 ** CHANGE it if it uses too much C-stack space.
369 */
370 #define LUAL_BUFFERSIZE		1024
371 
372 
373 
374 
375 /*
376 ** {==================================================================
377 @@ LUA_NUMBER is the type of numbers in Lua.
378 ** CHANGE the following definitions only if you want to build Lua
379 ** with a number type different from double. You may also need to
380 ** change lua_number2int & lua_number2integer.
381 ** ===================================================================
382 */
383 
384 #define LUA_NUMBER	int64_t
385 
386 /*
387 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
388 @* over a number.
389 */
390 #define LUAI_UACNUMBER	int64_t
391 
392 
393 /*
394 @@ LUA_NUMBER_SCAN is the format for reading numbers.
395 @@ LUA_NUMBER_FMT is the format for writing numbers.
396 @@ lua_number2str converts a number to a string.
397 @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
398 */
399 #define LUA_NUMBER_FMT		"%" PRId64
400 #define lua_number2str(s,n)	lcompat_sprintf((s), LUA_NUMBER_FMT, (n))
401 #define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */
402 
403 
404 /*
405 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations
406 */
407 #define l_mathop(x)		(x ## l)
408 
409 
410 /*
411 @@ lua_str2number converts a decimal numeric string to a number.
412 @@ lua_strx2number converts an hexadecimal numeric string to a number.
413 ** In C99, 'strtod' does both conversions. C89, however, has no function
414 ** to convert floating hexadecimal strings to numbers. For these
415 ** systems, you can leave 'lua_strx2number' undefined and Lua will
416 ** provide its own implementation.
417 */
418 #define lua_str2number(s,p)	lcompat_strtoll((s), (p))
419 
420 #if defined(LUA_USE_STRTODHEX)
421 #define lua_strx2number(s,p)	lcompat_strtoll((s), (p))
422 #endif
423 
424 
425 /*
426 @@ The luai_num* macros define the primitive operations over numbers.
427 */
428 
429 /* the following operations need the math library */
430 #if defined(lobject_c) || defined(lvm_c)
431 #define luai_nummod(L,a,b)	((a) % (b))
432 #define luai_numpow(L,a,b)	(lcompat_pow((a),(b)))
433 #endif
434 
435 /* these are quite standard operations */
436 #if defined(LUA_CORE)
437 #define luai_numadd(L,a,b)	((a)+(b))
438 #define luai_numsub(L,a,b)	((a)-(b))
439 #define luai_nummul(L,a,b)	((a)*(b))
440 #define luai_numdiv(L,a,b)	((a)/(b))
441 #define luai_numunm(L,a)	(-(a))
442 #define luai_numeq(a,b)		((a)==(b))
443 #define luai_numlt(L,a,b)	((a)<(b))
444 #define luai_numle(L,a,b)	((a)<=(b))
445 #define luai_numisnan(L,a)	(!luai_numeq((a), (a)))
446 #endif
447 
448 
449 
450 /*
451 @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
452 ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
453 ** machines, ptrdiff_t gives a good choice between int or long.)
454 */
455 #define LUA_INTEGER	ptrdiff_t
456 
457 /*
458 @@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned.
459 ** It must have at least 32 bits.
460 */
461 #define LUA_UNSIGNED	uint64_t
462 
463 
464 
465 /*
466 ** Some tricks with doubles
467 */
468 
469 #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI)	/* { */
470 /*
471 ** The next definitions activate some tricks to speed up the
472 ** conversion from doubles to integer types, mainly to LUA_UNSIGNED.
473 **
474 @@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a
475 ** DirectX idiosyncrasy.
476 **
477 @@ LUA_IEEE754TRICK uses a trick that should work on any machine
478 ** using IEEE754 with a 32-bit integer type.
479 **
480 @@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be
481 ** defined when LUA_INTEGER is a 32-bit integer.
482 **
483 @@ LUA_IEEEENDIAN is the endianness of doubles in your machine
484 ** (0 for little endian, 1 for big endian); if not defined, Lua will
485 ** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK).
486 **
487 @@ LUA_NANTRICK controls the use of a trick to pack all types into
488 ** a single double value, using NaN values to represent non-number
489 ** values. The trick only works on 32-bit machines (ints and pointers
490 ** are 32-bit values) with numbers represented as IEEE 754-2008 doubles
491 ** with conventional endianess (12345678 or 87654321), in CPUs that do
492 ** not produce signaling NaN values (all NaNs are quiet).
493 */
494 
495 /* Microsoft compiler on a Pentium (32 bit) ? */
496 #if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86)	/* { */
497 
498 #define LUA_MSASMTRICK
499 #define LUA_IEEEENDIAN		0
500 #define LUA_NANTRICK
501 
502 
503 /* pentium 32 bits? */
504 #elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */
505 
506 #define LUA_IEEE754TRICK
507 #define LUA_IEEELL
508 #define LUA_IEEEENDIAN		0
509 #define LUA_NANTRICK
510 
511 /* pentium 64 bits? */
512 #elif defined(__x86_64)						/* }{ */
513 
514 #define LUA_IEEE754TRICK
515 #define LUA_IEEEENDIAN		0
516 
517 #elif defined(__POWERPC__) || defined(__ppc__)			/* }{ */
518 
519 #define LUA_IEEE754TRICK
520 #define LUA_IEEEENDIAN		1
521 
522 #else								/* }{ */
523 
524 /* assume IEEE754 and a 32-bit integer type */
525 #define LUA_IEEE754TRICK
526 
527 #endif								/* } */
528 
529 #endif							/* } */
530 
531 /* }================================================================== */
532 
533 
534 
535 
536 /* =================================================================== */
537 
538 /*
539 ** Local configuration. You can use this space to add your redefinitions
540 ** without modifying the main part of the file.
541 */
542 
543 #define	getlocaledecpoint() ('.')
544 
545 #define abs(x) (((x) < 0) ? -(x) : (x))
546 
547 #if !defined(UCHAR_MAX)
548 #define	UCHAR_MAX (0xff)
549 #endif
550 
551 #endif
552 
553