1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef SLJIT_LIR_H_
28 #define SLJIT_LIR_H_
29
30 /*
31 ------------------------------------------------------------------------
32 Stack-Less JIT compiler for multiple architectures (x86, ARM, PowerPC)
33 ------------------------------------------------------------------------
34
35 Short description
36 Advantages:
37 - The execution can be continued from any LIR instruction. In other
38 words, it is possible to jump to any label from anywhere, even from
39 a code fragment, which is compiled later, as long as the compiling
40 context is the same. See sljit_emit_enter for more details.
41 - Supports self modifying code: target of any jump and call
42 instructions and some constant values can be dynamically modified
43 during runtime. See SLJIT_REWRITABLE_JUMP.
44 - although it is not suggested to do it frequently
45 - can be used for inline caching: save an important value once
46 in the instruction stream
47 - A fixed stack space can be allocated for local variables
48 - The compiler is thread-safe
49 - The compiler is highly configurable through preprocessor macros.
50 You can disable unneeded features (multithreading in single
51 threaded applications), and you can use your own system functions
52 (including memory allocators). See sljitConfig.h.
53 Disadvantages:
54 - The compiler is more like a platform independent assembler, so
55 there is no built-in variable management. Registers and stack must
56 be managed manually (the name of the compiler refers to this).
57 In practice:
58 - This approach is very effective for interpreters
59 - One of the saved registers typically points to a stack interface
60 - It can jump to any exception handler anytime (even if it belongs
61 to another function)
62 - Hot paths can be modified during runtime reflecting the changes
63 of the fastest execution path of the dynamic language
64 - SLJIT supports complex memory addressing modes
65 - mainly position and context independent code (except some cases)
66
67 For valgrind users:
68 - pass --smc-check=all argument to valgrind, since JIT is a "self-modifying code"
69 */
70
71 #if (defined SLJIT_HAVE_CONFIG_PRE && SLJIT_HAVE_CONFIG_PRE)
72 #include "sljitConfigPre.h"
73 #endif /* SLJIT_HAVE_CONFIG_PRE */
74
75 #include "sljitConfig.h"
76
77 /* The following header file defines useful macros for fine tuning
78 SLJIT based code generators. They are listed in the beginning
79 of sljitConfigInternal.h */
80
81 #include "sljitConfigInternal.h"
82
83 #if (defined SLJIT_HAVE_CONFIG_POST && SLJIT_HAVE_CONFIG_POST)
84 #include "sljitConfigPost.h"
85 #endif /* SLJIT_HAVE_CONFIG_POST */
86
87 #ifdef __cplusplus
88 extern "C" {
89 #endif
90
91 /* Version numbers. */
92 #define SLJIT_MAJOR_VERSION 0
93 #define SLJIT_MINOR_VERSION 95
94
95 /* --------------------------------------------------------------------- */
96 /* Error codes */
97 /* --------------------------------------------------------------------- */
98
99 /* Indicates no error. */
100 #define SLJIT_SUCCESS 0
101 /* After the call of sljit_generate_code(), the error code of the compiler
102 is set to this value to avoid further code generation.
103 The complier should be freed after sljit_generate_code(). */
104 #define SLJIT_ERR_COMPILED 1
105 /* Cannot allocate non-executable memory. */
106 #define SLJIT_ERR_ALLOC_FAILED 2
107 /* Cannot allocate executable memory.
108 Only sljit_generate_code() returns with this error code. */
109 #define SLJIT_ERR_EX_ALLOC_FAILED 3
110 /* Return value for SLJIT_CONFIG_UNSUPPORTED placeholder architecture. */
111 #define SLJIT_ERR_UNSUPPORTED 4
112 /* An ivalid argument is passed to any SLJIT function. */
113 #define SLJIT_ERR_BAD_ARGUMENT 5
114
115 /* --------------------------------------------------------------------- */
116 /* Registers */
117 /* --------------------------------------------------------------------- */
118
119 /*
120 Scratch (R) registers: registers which may not preserve their values
121 across function calls.
122
123 Saved (S) registers: registers which preserve their values across
124 function calls.
125
126 The scratch and saved register sets overlap. The last scratch register
127 is the first saved register, the one before the last is the second saved
128 register, and so on.
129
130 If an architecture provides two scratch and three saved registers,
131 its scratch and saved register sets are the following:
132
133 R0 | | R0 is always a scratch register
134 R1 | | R1 is always a scratch register
135 [R2] | S2 | R2 and S2 represent the same physical register
136 [R3] | S1 | R3 and S1 represent the same physical register
137 [R4] | S0 | R4 and S0 represent the same physical register
138
139 Note: SLJIT_NUMBER_OF_SCRATCH_REGISTERS would be 2 and
140 SLJIT_NUMBER_OF_SAVED_REGISTERS would be 3 for this architecture.
141
142 Note: On all supported architectures SLJIT_NUMBER_OF_REGISTERS >= 12
143 and SLJIT_NUMBER_OF_SAVED_REGISTERS >= 6. However, 6 registers
144 are virtual on x86-32. See below.
145
146 The purpose of this definition is convenience: saved registers can
147 be used as extra scratch registers. For example four registers can
148 be specified as scratch registers and the fifth one as saved register
149 on the CPU above and any user code which requires four scratch
150 registers can run unmodified. The SLJIT compiler automatically saves
151 the content of the two extra scratch register on the stack. Scratch
152 registers can also be preserved by saving their value on the stack
153 but this needs to be done manually.
154
155 Note: To emphasize that registers assigned to R2-R4 are saved
156 registers, they are enclosed by square brackets.
157
158 Note: sljit_emit_enter and sljit_set_context defines whether a register
159 is S or R register. E.g: when 3 scratches and 1 saved is mapped
160 by sljit_emit_enter, the allowed register set will be: R0-R2 and
161 S0. Although S2 is mapped to the same position as R2, it does not
162 available in the current configuration. Furthermore the S1 register
163 is not available at all.
164 */
165
166 /* Scratch registers. */
167 #define SLJIT_R0 1
168 #define SLJIT_R1 2
169 #define SLJIT_R2 3
170 /* Note: on x86-32, R3 - R6 (same as S3 - S6) are emulated (they
171 are allocated on the stack). These registers are called virtual
172 and cannot be used for memory addressing (cannot be part of
173 any SLJIT_MEM1, SLJIT_MEM2 construct). There is no such
174 limitation on other CPUs. See sljit_get_register_index(). */
175 #define SLJIT_R3 4
176 #define SLJIT_R4 5
177 #define SLJIT_R5 6
178 #define SLJIT_R6 7
179 #define SLJIT_R7 8
180 #define SLJIT_R8 9
181 #define SLJIT_R9 10
182 /* All R registers provided by the architecture can be accessed by SLJIT_R(i)
183 The i parameter must be >= 0 and < SLJIT_NUMBER_OF_REGISTERS. */
184 #define SLJIT_R(i) (1 + (i))
185
186 /* Saved registers. */
187 #define SLJIT_S0 (SLJIT_NUMBER_OF_REGISTERS)
188 #define SLJIT_S1 (SLJIT_NUMBER_OF_REGISTERS - 1)
189 #define SLJIT_S2 (SLJIT_NUMBER_OF_REGISTERS - 2)
190 /* Note: on x86-32, S3 - S6 (same as R3 - R6) are emulated (they
191 are allocated on the stack). These registers are called virtual
192 and cannot be used for memory addressing (cannot be part of
193 any SLJIT_MEM1, SLJIT_MEM2 construct). There is no such
194 limitation on other CPUs. See sljit_get_register_index(). */
195 #define SLJIT_S3 (SLJIT_NUMBER_OF_REGISTERS - 3)
196 #define SLJIT_S4 (SLJIT_NUMBER_OF_REGISTERS - 4)
197 #define SLJIT_S5 (SLJIT_NUMBER_OF_REGISTERS - 5)
198 #define SLJIT_S6 (SLJIT_NUMBER_OF_REGISTERS - 6)
199 #define SLJIT_S7 (SLJIT_NUMBER_OF_REGISTERS - 7)
200 #define SLJIT_S8 (SLJIT_NUMBER_OF_REGISTERS - 8)
201 #define SLJIT_S9 (SLJIT_NUMBER_OF_REGISTERS - 9)
202 /* All S registers provided by the architecture can be accessed by SLJIT_S(i)
203 The i parameter must be >= 0 and < SLJIT_NUMBER_OF_SAVED_REGISTERS. */
204 #define SLJIT_S(i) (SLJIT_NUMBER_OF_REGISTERS - (i))
205
206 /* Registers >= SLJIT_FIRST_SAVED_REG are saved registers. */
207 #define SLJIT_FIRST_SAVED_REG (SLJIT_S0 - SLJIT_NUMBER_OF_SAVED_REGISTERS + 1)
208
209 /* The SLJIT_SP provides direct access to the linear stack space allocated by
210 sljit_emit_enter. It can only be used in the following form: SLJIT_MEM1(SLJIT_SP).
211 The immediate offset is extended by the relative stack offset automatically.
212 The sljit_get_local_base can be used to obtain the real address of a value. */
213 #define SLJIT_SP (SLJIT_NUMBER_OF_REGISTERS + 1)
214
215 /* Return with machine word. */
216
217 #define SLJIT_RETURN_REG SLJIT_R0
218
219 /* --------------------------------------------------------------------- */
220 /* Floating point registers */
221 /* --------------------------------------------------------------------- */
222
223 /* Each floating point register can store a 32 or a 64 bit precision
224 value. The FR and FS register sets are overlap in the same way as R
225 and S register sets. See above. */
226
227 /* Floating point scratch registers. */
228 #define SLJIT_FR0 1
229 #define SLJIT_FR1 2
230 #define SLJIT_FR2 3
231 #define SLJIT_FR3 4
232 #define SLJIT_FR4 5
233 #define SLJIT_FR5 6
234 /* All FR registers provided by the architecture can be accessed by SLJIT_FR(i)
235 The i parameter must be >= 0 and < SLJIT_NUMBER_OF_FLOAT_REGISTERS. */
236 #define SLJIT_FR(i) (1 + (i))
237
238 /* Floating point saved registers. */
239 #define SLJIT_FS0 (SLJIT_NUMBER_OF_FLOAT_REGISTERS)
240 #define SLJIT_FS1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 1)
241 #define SLJIT_FS2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 2)
242 #define SLJIT_FS3 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 3)
243 #define SLJIT_FS4 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 4)
244 #define SLJIT_FS5 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 5)
245 /* All S registers provided by the architecture can be accessed by SLJIT_FS(i)
246 The i parameter must be >= 0 and < SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS. */
247 #define SLJIT_FS(i) (SLJIT_NUMBER_OF_FLOAT_REGISTERS - (i))
248
249 /* Float registers >= SLJIT_FIRST_SAVED_FLOAT_REG are saved registers. */
250 #define SLJIT_FIRST_SAVED_FLOAT_REG (SLJIT_FS0 - SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS + 1)
251
252 /* Return with floating point arg. */
253
254 #define SLJIT_RETURN_FREG SLJIT_FR0
255
256 /* --------------------------------------------------------------------- */
257 /* Argument type definitions */
258 /* --------------------------------------------------------------------- */
259
260 /* The following argument type definitions are used by sljit_emit_enter,
261 sljit_set_context, sljit_emit_call, and sljit_emit_icall functions.
262
263 As for sljit_emit_call and sljit_emit_icall, the first integer argument
264 must be placed into SLJIT_R0, the second one into SLJIT_R1, and so on.
265 Similarly the first floating point argument must be placed into SLJIT_FR0,
266 the second one into SLJIT_FR1, and so on.
267
268 As for sljit_emit_enter, the integer arguments can be stored in scratch
269 or saved registers. The first integer argument without _R postfix is
270 stored in SLJIT_S0, the next one in SLJIT_S1, and so on. The integer
271 arguments with _R postfix are placed into scratch registers. The index
272 of the scratch register is the count of the previous integer arguments
273 starting from SLJIT_R0. The floating point arguments are always placed
274 into SLJIT_FR0, SLJIT_FR1, and so on.
275
276 Note: if a function is called by sljit_emit_call/sljit_emit_icall and
277 an argument is stored in a scratch register by sljit_emit_enter,
278 that argument uses the same scratch register index for both
279 integer and floating point arguments.
280
281 Example function definition:
282 sljit_f32 SLJIT_FUNC example_c_callback(void *arg_a,
283 sljit_f64 arg_b, sljit_u32 arg_c, sljit_f32 arg_d);
284
285 Argument type definition:
286 SLJIT_ARG_RETURN(SLJIT_ARG_TYPE_F32)
287 | SLJIT_ARG_VALUE(SLJIT_ARG_TYPE_P, 1) | SLJIT_ARG_VALUE(SLJIT_ARG_TYPE_F64, 2)
288 | SLJIT_ARG_VALUE(SLJIT_ARG_TYPE_32, 3) | SLJIT_ARG_VALUE(SLJIT_ARG_TYPE_F32, 4)
289
290 Short form of argument type definition:
291 SLJIT_ARGS4(32, P, F64, 32, F32)
292
293 Argument passing:
294 arg_a must be placed in SLJIT_R0
295 arg_c must be placed in SLJIT_R1
296 arg_b must be placed in SLJIT_FR0
297 arg_d must be placed in SLJIT_FR1
298
299 Examples for argument processing by sljit_emit_enter:
300 SLJIT_ARGS4(VOID, P, 32_R, F32, W)
301 Arguments are placed into: SLJIT_S0, SLJIT_R1, SLJIT_FR0, SLJIT_S1
302
303 SLJIT_ARGS4(VOID, W, W_R, W, W_R)
304 Arguments are placed into: SLJIT_S0, SLJIT_R1, SLJIT_S1, SLJIT_R3
305
306 SLJIT_ARGS4(VOID, F64, W, F32, W_R)
307 Arguments are placed into: SLJIT_FR0, SLJIT_S0, SLJIT_FR1, SLJIT_R1
308
309 Note: it is recommended to pass the scratch arguments first
310 followed by the saved arguments:
311
312 SLJIT_ARGS4(VOID, W_R, W_R, W, W)
313 Arguments are placed into: SLJIT_R0, SLJIT_R1, SLJIT_S0, SLJIT_S1
314 */
315
316 /* The following flag is only allowed for the integer arguments of
317 sljit_emit_enter. When the flag is set, the integer argument is
318 stored in a scratch register instead of a saved register. */
319 #define SLJIT_ARG_TYPE_SCRATCH_REG 0x8
320
321 /* Void result, can only be used by SLJIT_ARG_RETURN. */
322 #define SLJIT_ARG_TYPE_VOID 0
323 /* Machine word sized integer argument or result. */
324 #define SLJIT_ARG_TYPE_W 1
325 #define SLJIT_ARG_TYPE_W_R (SLJIT_ARG_TYPE_W | SLJIT_ARG_TYPE_SCRATCH_REG)
326 /* 32 bit integer argument or result. */
327 #define SLJIT_ARG_TYPE_32 2
328 #define SLJIT_ARG_TYPE_32_R (SLJIT_ARG_TYPE_32 | SLJIT_ARG_TYPE_SCRATCH_REG)
329 /* Pointer sized integer argument or result. */
330 #define SLJIT_ARG_TYPE_P 3
331 #define SLJIT_ARG_TYPE_P_R (SLJIT_ARG_TYPE_P | SLJIT_ARG_TYPE_SCRATCH_REG)
332 /* 64 bit floating point argument or result. */
333 #define SLJIT_ARG_TYPE_F64 4
334 /* 32 bit floating point argument or result. */
335 #define SLJIT_ARG_TYPE_F32 5
336
337 #define SLJIT_ARG_SHIFT 4
338 #define SLJIT_ARG_RETURN(type) (type)
339 #define SLJIT_ARG_VALUE(type, idx) ((type) << ((idx) * SLJIT_ARG_SHIFT))
340
341 /* Simplified argument list definitions.
342
343 The following definition:
344 SLJIT_ARG_RETURN(SLJIT_ARG_TYPE_W) | SLJIT_ARG_VALUE(SLJIT_ARG_TYPE_F32, 1)
345
346 can be shortened to:
347 SLJIT_ARGS1(W, F32)
348 */
349
350 #define SLJIT_ARG_TO_TYPE(type) SLJIT_ARG_TYPE_ ## type
351
352 #define SLJIT_ARGS0(ret) \
353 SLJIT_ARG_RETURN(SLJIT_ARG_TO_TYPE(ret))
354
355 #define SLJIT_ARGS1(ret, arg1) \
356 (SLJIT_ARGS0(ret) | SLJIT_ARG_VALUE(SLJIT_ARG_TO_TYPE(arg1), 1))
357
358 #define SLJIT_ARGS2(ret, arg1, arg2) \
359 (SLJIT_ARGS1(ret, arg1) | SLJIT_ARG_VALUE(SLJIT_ARG_TO_TYPE(arg2), 2))
360
361 #define SLJIT_ARGS3(ret, arg1, arg2, arg3) \
362 (SLJIT_ARGS2(ret, arg1, arg2) | SLJIT_ARG_VALUE(SLJIT_ARG_TO_TYPE(arg3), 3))
363
364 #define SLJIT_ARGS4(ret, arg1, arg2, arg3, arg4) \
365 (SLJIT_ARGS3(ret, arg1, arg2, arg3) | SLJIT_ARG_VALUE(SLJIT_ARG_TO_TYPE(arg4), 4))
366
367 /* --------------------------------------------------------------------- */
368 /* Main structures and functions */
369 /* --------------------------------------------------------------------- */
370
371 /*
372 The following structures are private, and can be changed in the
373 future. Keeping them here allows code inlining.
374 */
375
376 struct sljit_memory_fragment {
377 struct sljit_memory_fragment *next;
378 sljit_uw used_size;
379 /* Must be aligned to sljit_sw. */
380 sljit_u8 memory[1];
381 };
382
383 struct sljit_label {
384 struct sljit_label *next;
385 sljit_uw addr;
386 /* The maximum size difference. */
387 sljit_uw size;
388 };
389
390 struct sljit_jump {
391 struct sljit_jump *next;
392 sljit_uw addr;
393 /* Architecture dependent flags. */
394 sljit_uw flags;
395 union {
396 sljit_uw target;
397 struct sljit_label *label;
398 } u;
399 };
400
401 struct sljit_put_label {
402 struct sljit_put_label *next;
403 struct sljit_label *label;
404 sljit_uw addr;
405 sljit_uw flags;
406 };
407
408 struct sljit_const {
409 struct sljit_const *next;
410 sljit_uw addr;
411 };
412
413 struct sljit_compiler {
414 sljit_s32 error;
415 sljit_s32 options;
416
417 struct sljit_label *labels;
418 struct sljit_jump *jumps;
419 struct sljit_put_label *put_labels;
420 struct sljit_const *consts;
421 struct sljit_label *last_label;
422 struct sljit_jump *last_jump;
423 struct sljit_const *last_const;
424 struct sljit_put_label *last_put_label;
425
426 void *allocator_data;
427 void *exec_allocator_data;
428 struct sljit_memory_fragment *buf;
429 struct sljit_memory_fragment *abuf;
430
431 /* Available scratch registers. */
432 sljit_s32 scratches;
433 /* Available saved registers. */
434 sljit_s32 saveds;
435 /* Available float scratch registers. */
436 sljit_s32 fscratches;
437 /* Available float saved registers. */
438 sljit_s32 fsaveds;
439 /* Local stack size. */
440 sljit_s32 local_size;
441 /* Maximum code size. */
442 sljit_uw size;
443 /* Relative offset of the executable mapping from the writable mapping. */
444 sljit_sw executable_offset;
445 /* Executable size for statistical purposes. */
446 sljit_uw executable_size;
447
448 #if (defined SLJIT_HAS_STATUS_FLAGS_STATE && SLJIT_HAS_STATUS_FLAGS_STATE)
449 sljit_s32 status_flags_state;
450 #endif
451
452 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
453 sljit_s32 args_size;
454 #endif
455
456 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
457 sljit_s32 mode32;
458 #endif
459
460 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5)
461 /* Constant pool handling. */
462 sljit_uw *cpool;
463 sljit_u8 *cpool_unique;
464 sljit_uw cpool_diff;
465 sljit_uw cpool_fill;
466 /* Other members. */
467 /* Contains pointer, "ldr pc, [...]" pairs. */
468 sljit_uw patches;
469 #endif
470
471 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
472 /* Temporary fields. */
473 sljit_uw shift_imm;
474 #endif /* SLJIT_CONFIG_ARM_V5 || SLJIT_CONFIG_ARM_V7 */
475
476 #if (defined SLJIT_CONFIG_ARM_32 && SLJIT_CONFIG_ARM_32) && (defined __SOFTFP__)
477 sljit_uw args_size;
478 #endif
479
480 #if (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC)
481 sljit_u32 imm;
482 #endif
483
484 #if (defined SLJIT_CONFIG_MIPS && SLJIT_CONFIG_MIPS)
485 sljit_s32 delay_slot;
486 sljit_s32 cache_arg;
487 sljit_sw cache_argw;
488 #endif
489
490 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
491 sljit_uw args_size;
492 #endif
493
494 #if (defined SLJIT_CONFIG_RISCV && SLJIT_CONFIG_RISCV)
495 sljit_s32 cache_arg;
496 sljit_sw cache_argw;
497 #endif
498
499 #if (defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X)
500 /* Need to allocate register save area to make calls. */
501 sljit_s32 mode;
502 #endif
503
504 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
505 FILE* verbose;
506 #endif
507
508 #if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) \
509 || (defined SLJIT_DEBUG && SLJIT_DEBUG)
510 /* Flags specified by the last arithmetic instruction.
511 It contains the type of the variable flag. */
512 sljit_s32 last_flags;
513 /* Return value type set by entry functions. */
514 sljit_s32 last_return;
515 /* Local size passed to entry functions. */
516 sljit_s32 logical_local_size;
517 #endif
518
519 #if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) \
520 || (defined SLJIT_DEBUG && SLJIT_DEBUG) \
521 || (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
522 /* Trust arguments when an API function is called.
523 Used internally for calling API functions. */
524 sljit_s32 skip_checks;
525 #endif
526 };
527
528 /* --------------------------------------------------------------------- */
529 /* Main functions */
530 /* --------------------------------------------------------------------- */
531
532 /* Creates an SLJIT compiler. The allocator_data is required by some
533 custom memory managers. This pointer is passed to SLJIT_MALLOC
534 and SLJIT_FREE macros. Most allocators (including the default
535 one) ignores this value, and it is recommended to pass NULL
536 as a dummy value for allocator_data. The exec_allocator_data
537 has the same purpose but this one is passed to SLJIT_MALLOC_EXEC /
538 SLJIT_MALLOC_FREE functions.
539
540 Returns NULL if failed. */
541 SLJIT_API_FUNC_ATTRIBUTE struct sljit_compiler* sljit_create_compiler(void *allocator_data, void *exec_allocator_data);
542
543 /* Frees everything except the compiled machine code. */
544 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_compiler(struct sljit_compiler *compiler);
545
546 /* Returns the current error code. If an error occurres, future calls
547 which uses the same compiler argument returns early with the same
548 error code. Thus there is no need for checking the error after every
549 call, it is enough to do it after the code is compiled. Removing
550 these checks increases the performance of the compiling process. */
sljit_get_compiler_error(struct sljit_compiler * compiler)551 static SLJIT_INLINE sljit_s32 sljit_get_compiler_error(struct sljit_compiler *compiler) { return compiler->error; }
552
553 /* Sets the compiler error code to SLJIT_ERR_ALLOC_FAILED except
554 if an error was detected before. After the error code is set
555 the compiler behaves as if the allocation failure happened
556 during an SLJIT function call. This can greatly simplify error
557 checking, since it is enough to check the compiler status
558 after the code is compiled. */
559 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_compiler_memory_error(struct sljit_compiler *compiler);
560
561 /*
562 Allocate a small amount of memory. The size must be <= 64 bytes on 32 bit,
563 and <= 128 bytes on 64 bit architectures. The memory area is owned by the
564 compiler, and freed by sljit_free_compiler. The returned pointer is
565 sizeof(sljit_sw) aligned. Excellent for allocating small blocks during
566 compiling, and no need to worry about freeing them. The size is enough
567 to contain at most 16 pointers. If the size is outside of the range,
568 the function will return with NULL. However, this return value does not
569 indicate that there is no more memory (does not set the current error code
570 of the compiler to out-of-memory status).
571 */
572 SLJIT_API_FUNC_ATTRIBUTE void* sljit_alloc_memory(struct sljit_compiler *compiler, sljit_s32 size);
573
574 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
575 /* Passing NULL disables verbose. */
576 SLJIT_API_FUNC_ATTRIBUTE void sljit_compiler_verbose(struct sljit_compiler *compiler, FILE* verbose);
577 #endif
578
579 /*
580 Create executable code from the instruction stream. This is the final step
581 of the code generation so no more instructions can be emitted after this call.
582 */
583
584 SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler);
585
586 /* Free executable code. */
587
588 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_code(void* code, void *exec_allocator_data);
589
590 /*
591 When the protected executable allocator is used the JIT code is mapped
592 twice. The first mapping has read/write and the second mapping has read/exec
593 permissions. This function returns with the relative offset of the executable
594 mapping using the writable mapping as the base after the machine code is
595 successfully generated. The returned value is always 0 for the normal executable
596 allocator, since it uses only one mapping with read/write/exec permissions.
597 Dynamic code modifications requires this value.
598
599 Before a successful code generation, this function returns with 0.
600 */
sljit_get_executable_offset(struct sljit_compiler * compiler)601 static SLJIT_INLINE sljit_sw sljit_get_executable_offset(struct sljit_compiler *compiler) { return compiler->executable_offset; }
602
603 /*
604 The executable memory consumption of the generated code can be retrieved by
605 this function. The returned value can be used for statistical purposes.
606
607 Before a successful code generation, this function returns with 0.
608 */
sljit_get_generated_code_size(struct sljit_compiler * compiler)609 static SLJIT_INLINE sljit_uw sljit_get_generated_code_size(struct sljit_compiler *compiler) { return compiler->executable_size; }
610
611 /* Returns with non-zero if the feature or limitation type passed as its
612 argument is present on the current CPU. The return value is one, if a
613 feature is fully supported, and it is two, if partially supported.
614
615 Some features (e.g. floating point operations) require hardware (CPU)
616 support while others (e.g. move with update) are emulated if not available.
617 However, even when a feature is emulated, specialized code paths may be
618 faster than the emulation. Some limitations are emulated as well so their
619 general case is supported but it has extra performance costs. */
620
621 /* [Not emulated] Floating-point support is available. */
622 #define SLJIT_HAS_FPU 0
623 /* [Limitation] Some registers are virtual registers. */
624 #define SLJIT_HAS_VIRTUAL_REGISTERS 1
625 /* [Emulated] Has zero register (setting a memory location to zero is efficient). */
626 #define SLJIT_HAS_ZERO_REGISTER 2
627 /* [Emulated] Count leading zero is supported. */
628 #define SLJIT_HAS_CLZ 3
629 /* [Emulated] Count trailing zero is supported. */
630 #define SLJIT_HAS_CTZ 4
631 /* [Emulated] Rotate left/right is supported. */
632 #define SLJIT_HAS_ROT 5
633 /* [Emulated] Conditional move is supported. */
634 #define SLJIT_HAS_CMOV 6
635 /* [Emulated] Prefetch instruction is available (emulated as a nop). */
636 #define SLJIT_HAS_PREFETCH 7
637
638 #if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86)
639 /* [Not emulated] SSE2 support is available on x86. */
640 #define SLJIT_HAS_SSE2 100
641 #endif
642
643 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type);
644
645 /* If type is between SLJIT_ORDERED_EQUAL and SLJIT_ORDERED_LESS_EQUAL,
646 sljit_cmp_info returns one, if the cpu supports the passed floating
647 point comparison type.
648
649 If type is SLJIT_UNORDERED or SLJIT_ORDERED, sljit_cmp_info returns
650 one, if the cpu supports checking the unordered comparison result
651 regardless of the comparison type passed to the comparison instruction.
652 The returned value is always one, if there is at least one type between
653 SLJIT_ORDERED_EQUAL and SLJIT_ORDERED_LESS_EQUAL where sljit_cmp_info
654 returns with a zero value.
655
656 Otherwise it returns zero. */
657 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_cmp_info(sljit_s32 type);
658
659 /* The following functions generate machine code. If there is no
660 error, they return with SLJIT_SUCCESS, otherwise they return
661 with an error code. */
662
663 /*
664 The executable code is a function from the viewpoint of the C
665 language. The function calls must obey to the ABI (Application
666 Binary Interface) of the platform, which specify the purpose of
667 machine registers and stack handling among other things. The
668 sljit_emit_enter function emits the necessary instructions for
669 setting up a new context for the executable code. This is often
670 called as function prologue. Furthermore the options argument
671 can be used to pass configuration options to the compiler. The
672 available options are listed before sljit_emit_enter.
673
674 The function argument list is specified by the SLJIT_ARGSx
675 (SLJIT_ARGS0 .. SLJIT_ARGS4) macros. Currently maximum four
676 arguments are supported. See the description of SLJIT_ARGSx
677 macros about argument passing. Furthermore the register set
678 used by the function must be declared as well. The number of
679 scratch and saved registers available to the function must
680 be passed to sljit_emit_enter. Only R registers between R0
681 and "scratches" argument can be used later. E.g. if "scratches"
682 is set to two, the scratch register set will be limited to
683 SLJIT_R0 and SLJIT_R1. The S registers and the floating point
684 registers ("fscratches" and "fsaveds") are specified in a
685 similar manner. The sljit_emit_enter is also capable of
686 allocating a stack space for local data. The "local_size"
687 argument contains the size in bytes of this local area, and
688 it can be accessed using SLJIT_MEM1(SLJIT_SP). The memory
689 area between SLJIT_SP (inclusive) and SLJIT_SP + local_size
690 (exclusive) can be modified freely until the function returns.
691 The stack space is not initialized to zero.
692
693 Note: the following conditions must met:
694 0 <= scratches <= SLJIT_NUMBER_OF_REGISTERS
695 0 <= saveds <= SLJIT_NUMBER_OF_SAVED_REGISTERS
696 scratches + saveds <= SLJIT_NUMBER_OF_REGISTERS
697 0 <= fscratches <= SLJIT_NUMBER_OF_FLOAT_REGISTERS
698 0 <= fsaveds <= SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS
699 fscratches + fsaveds <= SLJIT_NUMBER_OF_FLOAT_REGISTERS
700
701 Note: the compiler can use saved registers as scratch registers,
702 but the opposite is not supported
703
704 Note: every call of sljit_emit_enter and sljit_set_context
705 overwrites the previous context.
706 */
707
708 /* Saved registers between SLJIT_S0 and SLJIT_S(n - 1) (inclusive)
709 are not saved / restored on function enter / return. Instead,
710 these registers can be used to pass / return data (such as
711 global / local context pointers) across function calls. The
712 value of n must be between 1 and 3. This option is only
713 supported by SLJIT_ENTER_REG_ARG calling convention. */
714 #define SLJIT_ENTER_KEEP(n) (n)
715
716 /* The compiled function uses an SLJIT specific register argument
717 calling convention. This is a lightweight function call type where
718 both the caller and the called functions must be compiled by
719 SLJIT. The type argument of the call must be SLJIT_CALL_REG_ARG
720 and all arguments must be stored in scratch registers. */
721 #define SLJIT_ENTER_REG_ARG 0x00000004
722
723 /* The local_size must be >= 0 and <= SLJIT_MAX_LOCAL_SIZE. */
724 #define SLJIT_MAX_LOCAL_SIZE 65536
725
726 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
727 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
728 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size);
729
730 /* The SLJIT compiler has a current context (which contains the local
731 stack space size, number of used registers, etc.) which is initialized
732 by sljit_emit_enter. Several functions (such as sljit_emit_return)
733 requires this context to be able to generate the appropriate code.
734 However, some code fragments (compiled separately) may have no
735 normal entry point so their context is unknown for the compiler.
736
737 The sljit_set_context and sljit_emit_enter have the same arguments,
738 but sljit_set_context does not generate any machine code.
739
740 Note: every call of sljit_emit_enter and sljit_set_context overwrites
741 the previous context. */
742
743 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
744 sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
745 sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size);
746
747 /* Return to the caller function. The sljit_emit_return_void function
748 does not return with any value. The sljit_emit_return function returns
749 with a single value loaded from its source operand. The load operation
750 can be between SLJIT_MOV and SLJIT_MOV_P (see sljit_emit_op1) and
751 SLJIT_MOV_F32/SLJIT_MOV_F64 (see sljit_emit_fop1) depending on the
752 return value specified by sljit_emit_enter/sljit_set_context. */
753
754 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_void(struct sljit_compiler *compiler);
755
756 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op,
757 sljit_s32 src, sljit_sw srcw);
758
759 /* Restores the saved registers and free the stack area, then the execution
760 continues from the address specified by the source operand. This
761 operation is similar to sljit_emit_return, but it ignores the return
762 address. The code where the exection continues should use the same context
763 as the caller function (see sljit_set_context). A word (pointer) value
764 can be passed in the SLJIT_RETURN_REG register. This function can be used
765 to jump to exception handlers. */
766
767 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_to(struct sljit_compiler *compiler,
768 sljit_s32 src, sljit_sw srcw);
769
770 /* Generating entry and exit points for fast call functions (see SLJIT_FAST_CALL).
771 Both sljit_emit_fast_enter and SLJIT_FAST_RETURN operations preserve the
772 values of all registers and stack frame. The return address is stored in the
773 dst argument of sljit_emit_fast_enter, and this return address can be passed
774 to SLJIT_FAST_RETURN to continue the execution after the fast call.
775
776 Fast calls are cheap operations (usually only a single call instruction is
777 emitted) but they do not preserve any registers. However the callee function
778 can freely use / update any registers and the local area which can be
779 efficiently exploited by various optimizations. Registers can be saved
780 and restored manually if needed.
781
782 Although returning to different address by SLJIT_FAST_RETURN is possible,
783 this address usually cannot be predicted by the return address predictor of
784 modern CPUs which may reduce performance. Furthermore certain security
785 enhancement technologies such as Intel Control-flow Enforcement Technology
786 (CET) may disallow returning to a different address.
787
788 Flags: - (does not modify flags). */
789
790 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw);
791
792 /*
793 Source and destination operands for arithmetical instructions
794 imm - a simple immediate value (cannot be used as a destination)
795 reg - any of the available registers (immediate argument must be 0)
796 [imm] - absolute memory address
797 [reg+imm] - indirect memory address
798 [reg+(reg<<imm)] - indirect indexed memory address (shift must be between 0 and 3)
799 useful for accessing arrays (fully supported by both x86 and
800 ARM architectures, and cheap operation on others)
801 */
802
803 /*
804 IMPORTANT NOTE: memory accesses MUST be naturally aligned unless
805 SLJIT_UNALIGNED macro is defined and its value is 1.
806
807 length | alignment
808 ---------+-----------
809 byte | 1 byte (any physical_address is accepted)
810 half | 2 byte (physical_address & 0x1 == 0)
811 int | 4 byte (physical_address & 0x3 == 0)
812 word | 4 byte if SLJIT_32BIT_ARCHITECTURE is defined and its value is 1
813 | 8 byte if SLJIT_64BIT_ARCHITECTURE is defined and its value is 1
814 pointer | size of sljit_p type (4 byte on 32 bit machines, 4 or 8 byte
815 | on 64 bit machines)
816
817 Note: Different architectures have different addressing limitations.
818 A single instruction is enough for the following addressing
819 modes. Other adrressing modes are emulated by instruction
820 sequences. This information could help to improve those code
821 generators which focuses only a few architectures.
822
823 x86: [reg+imm], -2^32+1 <= imm <= 2^32-1 (full address space on x86-32)
824 [reg+(reg<<imm)] is supported
825 [imm], -2^32+1 <= imm <= 2^32-1 is supported
826 Write-back is not supported
827 arm: [reg+imm], -4095 <= imm <= 4095 or -255 <= imm <= 255 for signed
828 bytes, any halfs or floating point values)
829 [reg+(reg<<imm)] is supported
830 Write-back is supported
831 arm-t2: [reg+imm], -255 <= imm <= 4095
832 [reg+(reg<<imm)] is supported
833 Write back is supported only for [reg+imm], where -255 <= imm <= 255
834 arm64: [reg+imm], -256 <= imm <= 255, 0 <= aligned imm <= 4095 * alignment
835 [reg+(reg<<imm)] is supported
836 Write back is supported only for [reg+imm], where -256 <= imm <= 255
837 ppc: [reg+imm], -65536 <= imm <= 65535. 64 bit loads/stores and 32 bit
838 signed load on 64 bit requires immediates divisible by 4.
839 [reg+imm] is not supported for signed 8 bit values.
840 [reg+reg] is supported
841 Write-back is supported except for one instruction: 32 bit signed
842 load with [reg+imm] addressing mode on 64 bit.
843 mips: [reg+imm], -65536 <= imm <= 65535
844 Write-back is not supported
845 riscv: [reg+imm], -2048 <= imm <= 2047
846 Write-back is not supported
847 s390x: [reg+imm], -2^19 <= imm < 2^19
848 [reg+reg] is supported
849 Write-back is not supported
850 */
851
852 /* Macros for specifying operand types. */
853 #define SLJIT_MEM 0x80
854 #define SLJIT_MEM0() (SLJIT_MEM)
855 #define SLJIT_MEM1(r1) (SLJIT_MEM | (r1))
856 #define SLJIT_MEM2(r1, r2) (SLJIT_MEM | (r1) | ((r2) << 8))
857 #define SLJIT_IMM 0x40
858 #define SLJIT_REG_PAIR(r1, r2) ((r1) | ((r2) << 8))
859
860 /* Sets 32 bit operation mode on 64 bit CPUs. This option is ignored on
861 32 bit CPUs. When this option is set for an arithmetic operation, only
862 the lower 32 bits of the input registers are used, and the CPU status
863 flags are set according to the 32 bit result. Although the higher 32 bit
864 of the input and the result registers are not defined by SLJIT, it might
865 be defined by the CPU architecture (e.g. MIPS). To satisfy these CPU
866 requirements all source registers must be the result of those operations
867 where this option was also set. Memory loads read 32 bit values rather
868 than 64 bit ones. In other words 32 bit and 64 bit operations cannot be
869 mixed. The only exception is SLJIT_MOV32 which source register can hold
870 any 32 or 64 bit value, and it is converted to a 32 bit compatible format
871 first. When the source and destination registers are the same, this
872 conversion is free (no instructions are emitted) on most CPUs. A 32 bit
873 value can also be converted to a 64 bit value by SLJIT_MOV_S32
874 (sign extension) or SLJIT_MOV_U32 (zero extension).
875
876 As for floating-point operations, this option sets 32 bit single
877 precision mode. Similar to the integer operations, all register arguments
878 must be the result of those operations where this option was also set.
879
880 Note: memory addressing always uses 64 bit values on 64 bit systems so
881 the result of a 32 bit operation must not be used with SLJIT_MEMx
882 macros.
883
884 This option is part of the instruction name, so there is no need to
885 manually set it. E.g:
886
887 SLJIT_ADD32 == (SLJIT_ADD | SLJIT_32) */
888 #define SLJIT_32 0x100
889
890 /* Many CPUs (x86, ARM, PPC) have status flag bits which can be set according
891 to the result of an operation. Other CPUs (MIPS) do not have status
892 flag bits, and results must be stored in registers. To cover both
893 architecture types efficiently only two flags are defined by SLJIT:
894
895 * Zero (equal) flag: it is set if the result is zero
896 * Variable flag: its value is defined by the arithmetic operation
897
898 SLJIT instructions can set any or both of these flags. The value of
899 these flags is undefined if the instruction does not specify their
900 value. The description of each instruction contains the list of
901 allowed flag types.
902
903 Note: the logical or operation can be used to set flags.
904
905 Example: SLJIT_ADD can set the Z, OVERFLOW, CARRY flags hence
906
907 sljit_op2(..., SLJIT_ADD, ...)
908 Both the zero and variable flags are undefined so they can
909 have any value after the operation is completed.
910
911 sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z, ...)
912 Sets the zero flag if the result is zero, clears it otherwise.
913 The variable flag is undefined.
914
915 sljit_op2(..., SLJIT_ADD | SLJIT_SET_OVERFLOW, ...)
916 Sets the variable flag if an integer overflow occurs, clears
917 it otherwise. The zero flag is undefined.
918
919 sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z | SLJIT_SET_CARRY, ...)
920 Sets the zero flag if the result is zero, clears it otherwise.
921 Sets the variable flag if unsigned overflow (carry) occurs,
922 clears it otherwise.
923
924 Certain instructions (e.g. SLJIT_MOV) does not modify flags, so
925 status flags are unchanged.
926
927 Example:
928
929 sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z, ...)
930 sljit_op1(..., SLJIT_MOV, ...)
931 Zero flag is set according to the result of SLJIT_ADD.
932
933 sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z, ...)
934 sljit_op2(..., SLJIT_ADD, ...)
935 Zero flag has unknown value.
936
937 These flags can be used for code optimization. E.g. a fast loop can be
938 implemented by decreasing a counter register and set the zero flag
939 using a single instruction. The zero register can be used by a
940 conditional jump to restart the loop. A single comparison can set a
941 zero and less flags to check if a value is less, equal, or greater
942 than another value.
943
944 Motivation: although some CPUs can set a large number of flag bits,
945 usually their values are ignored or only a few of them are used. Emulating
946 a large number of flags on systems without a flag register is complicated
947 so SLJIT instructions must specify the flag they want to use and only
948 that flag is computed. The last arithmetic instruction can be repeated if
949 multiple flags need to be checked.
950 */
951
952 /* Set Zero status flag. */
953 #define SLJIT_SET_Z 0x0200
954 /* Set the variable status flag if condition is true.
955 See comparison types (e.g. SLJIT_SET_LESS, SLJIT_SET_F_EQUAL). */
956 #define SLJIT_SET(condition) ((condition) << 10)
957
958 /* Starting index of opcodes for sljit_emit_op0. */
959 #define SLJIT_OP0_BASE 0
960
961 /* Flags: - (does not modify flags)
962 Note: breakpoint instruction is not supported by all architectures (e.g. ppc)
963 It falls back to SLJIT_NOP in those cases. */
964 #define SLJIT_BREAKPOINT (SLJIT_OP0_BASE + 0)
965 /* Flags: - (does not modify flags)
966 Note: may or may not cause an extra cycle wait
967 it can even decrease the runtime in a few cases. */
968 #define SLJIT_NOP (SLJIT_OP0_BASE + 1)
969 /* Flags: - (may destroy flags)
970 Unsigned multiplication of SLJIT_R0 and SLJIT_R1.
971 Result is placed into SLJIT_R1:SLJIT_R0 (high:low) word */
972 #define SLJIT_LMUL_UW (SLJIT_OP0_BASE + 2)
973 /* Flags: - (may destroy flags)
974 Signed multiplication of SLJIT_R0 and SLJIT_R1.
975 Result is placed into SLJIT_R1:SLJIT_R0 (high:low) word */
976 #define SLJIT_LMUL_SW (SLJIT_OP0_BASE + 3)
977 /* Flags: - (may destroy flags)
978 Unsigned divide of the value in SLJIT_R0 by the value in SLJIT_R1.
979 The result is placed into SLJIT_R0 and the remainder into SLJIT_R1.
980 Note: if SLJIT_R1 is 0, the behaviour is undefined. */
981 #define SLJIT_DIVMOD_UW (SLJIT_OP0_BASE + 4)
982 #define SLJIT_DIVMOD_U32 (SLJIT_DIVMOD_UW | SLJIT_32)
983 /* Flags: - (may destroy flags)
984 Signed divide of the value in SLJIT_R0 by the value in SLJIT_R1.
985 The result is placed into SLJIT_R0 and the remainder into SLJIT_R1.
986 Note: if SLJIT_R1 is 0, the behaviour is undefined.
987 Note: if SLJIT_R1 is -1 and SLJIT_R0 is integer min (0x800..00),
988 the behaviour is undefined. */
989 #define SLJIT_DIVMOD_SW (SLJIT_OP0_BASE + 5)
990 #define SLJIT_DIVMOD_S32 (SLJIT_DIVMOD_SW | SLJIT_32)
991 /* Flags: - (may destroy flags)
992 Unsigned divide of the value in SLJIT_R0 by the value in SLJIT_R1.
993 The result is placed into SLJIT_R0. SLJIT_R1 preserves its value.
994 Note: if SLJIT_R1 is 0, the behaviour is undefined. */
995 #define SLJIT_DIV_UW (SLJIT_OP0_BASE + 6)
996 #define SLJIT_DIV_U32 (SLJIT_DIV_UW | SLJIT_32)
997 /* Flags: - (may destroy flags)
998 Signed divide of the value in SLJIT_R0 by the value in SLJIT_R1.
999 The result is placed into SLJIT_R0. SLJIT_R1 preserves its value.
1000 Note: if SLJIT_R1 is 0, the behaviour is undefined.
1001 Note: if SLJIT_R1 is -1 and SLJIT_R0 is integer min (0x800..00),
1002 the behaviour is undefined. */
1003 #define SLJIT_DIV_SW (SLJIT_OP0_BASE + 7)
1004 #define SLJIT_DIV_S32 (SLJIT_DIV_SW | SLJIT_32)
1005 /* Flags: - (does not modify flags)
1006 ENDBR32 instruction for x86-32 and ENDBR64 instruction for x86-64
1007 when Intel Control-flow Enforcement Technology (CET) is enabled.
1008 No instructions are emitted for other architectures. */
1009 #define SLJIT_ENDBR (SLJIT_OP0_BASE + 8)
1010 /* Flags: - (may destroy flags)
1011 Skip stack frames before return when Intel Control-flow
1012 Enforcement Technology (CET) is enabled. No instructions
1013 are emitted for other architectures. */
1014 #define SLJIT_SKIP_FRAMES_BEFORE_RETURN (SLJIT_OP0_BASE + 9)
1015
1016 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op);
1017
1018 /* Starting index of opcodes for sljit_emit_op1. */
1019 #define SLJIT_OP1_BASE 32
1020
1021 /* The MOV instruction transfers data from source to destination.
1022
1023 MOV instruction suffixes:
1024
1025 U8 - unsigned 8 bit data transfer
1026 S8 - signed 8 bit data transfer
1027 U16 - unsigned 16 bit data transfer
1028 S16 - signed 16 bit data transfer
1029 U32 - unsigned int (32 bit) data transfer
1030 S32 - signed int (32 bit) data transfer
1031 P - pointer (sljit_p) data transfer
1032 */
1033
1034 /* Flags: - (does not modify flags) */
1035 #define SLJIT_MOV (SLJIT_OP1_BASE + 0)
1036 /* Flags: - (does not modify flags) */
1037 #define SLJIT_MOV_U8 (SLJIT_OP1_BASE + 1)
1038 #define SLJIT_MOV32_U8 (SLJIT_MOV_U8 | SLJIT_32)
1039 /* Flags: - (does not modify flags) */
1040 #define SLJIT_MOV_S8 (SLJIT_OP1_BASE + 2)
1041 #define SLJIT_MOV32_S8 (SLJIT_MOV_S8 | SLJIT_32)
1042 /* Flags: - (does not modify flags) */
1043 #define SLJIT_MOV_U16 (SLJIT_OP1_BASE + 3)
1044 #define SLJIT_MOV32_U16 (SLJIT_MOV_U16 | SLJIT_32)
1045 /* Flags: - (does not modify flags) */
1046 #define SLJIT_MOV_S16 (SLJIT_OP1_BASE + 4)
1047 #define SLJIT_MOV32_S16 (SLJIT_MOV_S16 | SLJIT_32)
1048 /* Flags: - (does not modify flags)
1049 Note: no SLJIT_MOV32_U32 form, since it is the same as SLJIT_MOV32 */
1050 #define SLJIT_MOV_U32 (SLJIT_OP1_BASE + 5)
1051 /* Flags: - (does not modify flags)
1052 Note: no SLJIT_MOV32_S32 form, since it is the same as SLJIT_MOV32 */
1053 #define SLJIT_MOV_S32 (SLJIT_OP1_BASE + 6)
1054 /* Flags: - (does not modify flags) */
1055 #define SLJIT_MOV32 (SLJIT_OP1_BASE + 7)
1056 /* Flags: - (does not modify flags)
1057 Note: loads a pointer sized data, useful on x32 mode (a 64 bit mode
1058 on x86-64 which uses 32 bit pointers) or similar compiling modes */
1059 #define SLJIT_MOV_P (SLJIT_OP1_BASE + 8)
1060 /* Flags: Z
1061 Note: immediate source argument is not supported */
1062 #define SLJIT_NOT (SLJIT_OP1_BASE + 9)
1063 #define SLJIT_NOT32 (SLJIT_NOT | SLJIT_32)
1064 /* Count leading zeroes
1065 Flags: - (may destroy flags)
1066 Note: immediate source argument is not supported */
1067 #define SLJIT_CLZ (SLJIT_OP1_BASE + 10)
1068 #define SLJIT_CLZ32 (SLJIT_CLZ | SLJIT_32)
1069 /* Count trailing zeroes
1070 Flags: - (may destroy flags)
1071 Note: immediate source argument is not supported */
1072 #define SLJIT_CTZ (SLJIT_OP1_BASE + 11)
1073 #define SLJIT_CTZ32 (SLJIT_CTZ | SLJIT_32)
1074
1075 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
1076 sljit_s32 dst, sljit_sw dstw,
1077 sljit_s32 src, sljit_sw srcw);
1078
1079 /* Starting index of opcodes for sljit_emit_op2. */
1080 #define SLJIT_OP2_BASE 96
1081
1082 /* Flags: Z | OVERFLOW | CARRY */
1083 #define SLJIT_ADD (SLJIT_OP2_BASE + 0)
1084 #define SLJIT_ADD32 (SLJIT_ADD | SLJIT_32)
1085 /* Flags: CARRY */
1086 #define SLJIT_ADDC (SLJIT_OP2_BASE + 1)
1087 #define SLJIT_ADDC32 (SLJIT_ADDC | SLJIT_32)
1088 /* Flags: Z | LESS | GREATER_EQUAL | GREATER | LESS_EQUAL
1089 SIG_LESS | SIG_GREATER_EQUAL | SIG_GREATER
1090 SIG_LESS_EQUAL | OVERFLOW | CARRY */
1091 #define SLJIT_SUB (SLJIT_OP2_BASE + 2)
1092 #define SLJIT_SUB32 (SLJIT_SUB | SLJIT_32)
1093 /* Flags: CARRY */
1094 #define SLJIT_SUBC (SLJIT_OP2_BASE + 3)
1095 #define SLJIT_SUBC32 (SLJIT_SUBC | SLJIT_32)
1096 /* Note: integer mul
1097 Flags: OVERFLOW */
1098 #define SLJIT_MUL (SLJIT_OP2_BASE + 4)
1099 #define SLJIT_MUL32 (SLJIT_MUL | SLJIT_32)
1100 /* Flags: Z */
1101 #define SLJIT_AND (SLJIT_OP2_BASE + 5)
1102 #define SLJIT_AND32 (SLJIT_AND | SLJIT_32)
1103 /* Flags: Z */
1104 #define SLJIT_OR (SLJIT_OP2_BASE + 6)
1105 #define SLJIT_OR32 (SLJIT_OR | SLJIT_32)
1106 /* Flags: Z */
1107 #define SLJIT_XOR (SLJIT_OP2_BASE + 7)
1108 #define SLJIT_XOR32 (SLJIT_XOR | SLJIT_32)
1109 /* Flags: Z
1110 Let bit_length be the length of the shift operation: 32 or 64.
1111 If src2 is immediate, src2w is masked by (bit_length - 1).
1112 Otherwise, if the content of src2 is outside the range from 0
1113 to bit_length - 1, the result is undefined. */
1114 #define SLJIT_SHL (SLJIT_OP2_BASE + 8)
1115 #define SLJIT_SHL32 (SLJIT_SHL | SLJIT_32)
1116 /* Flags: Z
1117 Same as SLJIT_SHL, except the the second operand is
1118 always masked by the length of the shift operation. */
1119 #define SLJIT_MSHL (SLJIT_OP2_BASE + 9)
1120 #define SLJIT_MSHL32 (SLJIT_MSHL | SLJIT_32)
1121 /* Flags: Z
1122 Let bit_length be the length of the shift operation: 32 or 64.
1123 If src2 is immediate, src2w is masked by (bit_length - 1).
1124 Otherwise, if the content of src2 is outside the range from 0
1125 to bit_length - 1, the result is undefined. */
1126 #define SLJIT_LSHR (SLJIT_OP2_BASE + 10)
1127 #define SLJIT_LSHR32 (SLJIT_LSHR | SLJIT_32)
1128 /* Flags: Z
1129 Same as SLJIT_LSHR, except the the second operand is
1130 always masked by the length of the shift operation. */
1131 #define SLJIT_MLSHR (SLJIT_OP2_BASE + 11)
1132 #define SLJIT_MLSHR32 (SLJIT_MLSHR | SLJIT_32)
1133 /* Flags: Z
1134 Let bit_length be the length of the shift operation: 32 or 64.
1135 If src2 is immediate, src2w is masked by (bit_length - 1).
1136 Otherwise, if the content of src2 is outside the range from 0
1137 to bit_length - 1, the result is undefined. */
1138 #define SLJIT_ASHR (SLJIT_OP2_BASE + 12)
1139 #define SLJIT_ASHR32 (SLJIT_ASHR | SLJIT_32)
1140 /* Flags: Z
1141 Same as SLJIT_ASHR, except the the second operand is
1142 always masked by the length of the shift operation. */
1143 #define SLJIT_MASHR (SLJIT_OP2_BASE + 13)
1144 #define SLJIT_MASHR32 (SLJIT_MASHR | SLJIT_32)
1145 /* Flags: - (may destroy flags)
1146 Let bit_length be the length of the rotate operation: 32 or 64.
1147 The second operand is always masked by (bit_length - 1). */
1148 #define SLJIT_ROTL (SLJIT_OP2_BASE + 14)
1149 #define SLJIT_ROTL32 (SLJIT_ROTL | SLJIT_32)
1150 /* Flags: - (may destroy flags)
1151 Let bit_length be the length of the rotate operation: 32 or 64.
1152 The second operand is always masked by (bit_length - 1). */
1153 #define SLJIT_ROTR (SLJIT_OP2_BASE + 15)
1154 #define SLJIT_ROTR32 (SLJIT_ROTR | SLJIT_32)
1155
1156 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
1157 sljit_s32 dst, sljit_sw dstw,
1158 sljit_s32 src1, sljit_sw src1w,
1159 sljit_s32 src2, sljit_sw src2w);
1160
1161 /* The sljit_emit_op2u function is the same as sljit_emit_op2
1162 except the result is discarded. */
1163
1164 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2u(struct sljit_compiler *compiler, sljit_s32 op,
1165 sljit_s32 src1, sljit_sw src1w,
1166 sljit_s32 src2, sljit_sw src2w);
1167
1168 /* Emit a left or right shift operation, where the bits shifted
1169 in comes from a separate source operand. All operands are
1170 interpreted as unsigned integers.
1171
1172 In the followings the value_mask variable is 31 for 32 bit
1173 operations and word_size - 1 otherwise.
1174
1175 op must be one of the following operations:
1176 SLJIT_SHL or SLJIT_SHL32:
1177 src_dst <<= src2
1178 src_dst |= ((src1 >> 1) >> (src2 ^ value_mask))
1179 SLJIT_MSHL or SLJIT_MSHL32:
1180 src2 &= value_mask
1181 perform the SLJIT_SHL or SLJIT_SHL32 operation
1182 SLJIT_LSHR or SLJIT_LSHR32:
1183 src_dst >>= src2
1184 src_dst |= ((src1 << 1) << (src2 ^ value_mask))
1185 SLJIT_MLSHR or SLJIT_MLSHR32:
1186 src2 &= value_mask
1187 perform the SLJIT_LSHR or SLJIT_LSHR32 operation
1188
1189 op can be combined (or'ed) with SLJIT_SHIFT_INTO_NON_ZERO
1190
1191 src_dst must be a register which content is updated after
1192 the operation is completed
1193 src1 / src1w contains the bits which shifted into src_dst
1194 src2 / src2w contains the shift amount
1195
1196 Note: a rotate operation can be performed if src_dst and
1197 src1 are set to the same register
1198
1199 Flags: - (may destroy flags) */
1200
1201 /* The src2 contains a non-zero value. Improves the generated
1202 code on certain architectures, which provides a small
1203 performance improvement. */
1204 #define SLJIT_SHIFT_INTO_NON_ZERO 0x200
1205
1206 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_shift_into(struct sljit_compiler *compiler, sljit_s32 op,
1207 sljit_s32 src_dst,
1208 sljit_s32 src1, sljit_sw src1w,
1209 sljit_s32 src2, sljit_sw src2w);
1210
1211 /* Starting index of opcodes for sljit_emit_op2. */
1212 #define SLJIT_OP_SRC_BASE 128
1213
1214 /* Note: src cannot be an immedate value
1215 Flags: - (does not modify flags) */
1216 #define SLJIT_FAST_RETURN (SLJIT_OP_SRC_BASE + 0)
1217 /* Skip stack frames before fast return.
1218 Note: src cannot be an immedate value
1219 Flags: may destroy flags. */
1220 #define SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN (SLJIT_OP_SRC_BASE + 1)
1221 /* Prefetch value into the level 1 data cache
1222 Note: if the target CPU does not support data prefetch,
1223 no instructions are emitted.
1224 Note: this instruction never fails, even if the memory address is invalid.
1225 Flags: - (does not modify flags) */
1226 #define SLJIT_PREFETCH_L1 (SLJIT_OP_SRC_BASE + 2)
1227 /* Prefetch value into the level 2 data cache
1228 Note: same as SLJIT_PREFETCH_L1 if the target CPU
1229 does not support this instruction form.
1230 Note: this instruction never fails, even if the memory address is invalid.
1231 Flags: - (does not modify flags) */
1232 #define SLJIT_PREFETCH_L2 (SLJIT_OP_SRC_BASE + 3)
1233 /* Prefetch value into the level 3 data cache
1234 Note: same as SLJIT_PREFETCH_L2 if the target CPU
1235 does not support this instruction form.
1236 Note: this instruction never fails, even if the memory address is invalid.
1237 Flags: - (does not modify flags) */
1238 #define SLJIT_PREFETCH_L3 (SLJIT_OP_SRC_BASE + 4)
1239 /* Prefetch a value which is only used once (and can be discarded afterwards)
1240 Note: same as SLJIT_PREFETCH_L1 if the target CPU
1241 does not support this instruction form.
1242 Note: this instruction never fails, even if the memory address is invalid.
1243 Flags: - (does not modify flags) */
1244 #define SLJIT_PREFETCH_ONCE (SLJIT_OP_SRC_BASE + 5)
1245
1246 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op,
1247 sljit_s32 src, sljit_sw srcw);
1248
1249 /* Starting index of opcodes for sljit_emit_fop1. */
1250 #define SLJIT_FOP1_BASE 160
1251
1252 /* Flags: - (does not modify flags) */
1253 #define SLJIT_MOV_F64 (SLJIT_FOP1_BASE + 0)
1254 #define SLJIT_MOV_F32 (SLJIT_MOV_F64 | SLJIT_32)
1255 /* Convert opcodes: CONV[DST_TYPE].FROM[SRC_TYPE]
1256 SRC/DST TYPE can be: F64, F32, S32, SW
1257 Rounding mode when the destination is SW or S32: round towards zero. */
1258 /* Flags: - (may destroy flags) */
1259 #define SLJIT_CONV_F64_FROM_F32 (SLJIT_FOP1_BASE + 1)
1260 #define SLJIT_CONV_F32_FROM_F64 (SLJIT_CONV_F64_FROM_F32 | SLJIT_32)
1261 /* Flags: - (may destroy flags) */
1262 #define SLJIT_CONV_SW_FROM_F64 (SLJIT_FOP1_BASE + 2)
1263 #define SLJIT_CONV_SW_FROM_F32 (SLJIT_CONV_SW_FROM_F64 | SLJIT_32)
1264 /* Flags: - (may destroy flags) */
1265 #define SLJIT_CONV_S32_FROM_F64 (SLJIT_FOP1_BASE + 3)
1266 #define SLJIT_CONV_S32_FROM_F32 (SLJIT_CONV_S32_FROM_F64 | SLJIT_32)
1267 /* Flags: - (may destroy flags) */
1268 #define SLJIT_CONV_F64_FROM_SW (SLJIT_FOP1_BASE + 4)
1269 #define SLJIT_CONV_F32_FROM_SW (SLJIT_CONV_F64_FROM_SW | SLJIT_32)
1270 /* Flags: - (may destroy flags) */
1271 #define SLJIT_CONV_F64_FROM_S32 (SLJIT_FOP1_BASE + 5)
1272 #define SLJIT_CONV_F32_FROM_S32 (SLJIT_CONV_F64_FROM_S32 | SLJIT_32)
1273 /* Note: dst is the left and src is the right operand for SLJIT_CMP_F32/64.
1274 Flags: EQUAL_F | LESS_F | GREATER_EQUAL_F | GREATER_F | LESS_EQUAL_F */
1275 #define SLJIT_CMP_F64 (SLJIT_FOP1_BASE + 6)
1276 #define SLJIT_CMP_F32 (SLJIT_CMP_F64 | SLJIT_32)
1277 /* Flags: - (may destroy flags) */
1278 #define SLJIT_NEG_F64 (SLJIT_FOP1_BASE + 7)
1279 #define SLJIT_NEG_F32 (SLJIT_NEG_F64 | SLJIT_32)
1280 /* Flags: - (may destroy flags) */
1281 #define SLJIT_ABS_F64 (SLJIT_FOP1_BASE + 8)
1282 #define SLJIT_ABS_F32 (SLJIT_ABS_F64 | SLJIT_32)
1283
1284 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
1285 sljit_s32 dst, sljit_sw dstw,
1286 sljit_s32 src, sljit_sw srcw);
1287
1288 /* Starting index of opcodes for sljit_emit_fop2. */
1289 #define SLJIT_FOP2_BASE 192
1290
1291 /* Flags: - (may destroy flags) */
1292 #define SLJIT_ADD_F64 (SLJIT_FOP2_BASE + 0)
1293 #define SLJIT_ADD_F32 (SLJIT_ADD_F64 | SLJIT_32)
1294 /* Flags: - (may destroy flags) */
1295 #define SLJIT_SUB_F64 (SLJIT_FOP2_BASE + 1)
1296 #define SLJIT_SUB_F32 (SLJIT_SUB_F64 | SLJIT_32)
1297 /* Flags: - (may destroy flags) */
1298 #define SLJIT_MUL_F64 (SLJIT_FOP2_BASE + 2)
1299 #define SLJIT_MUL_F32 (SLJIT_MUL_F64 | SLJIT_32)
1300 /* Flags: - (may destroy flags) */
1301 #define SLJIT_DIV_F64 (SLJIT_FOP2_BASE + 3)
1302 #define SLJIT_DIV_F32 (SLJIT_DIV_F64 | SLJIT_32)
1303
1304 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
1305 sljit_s32 dst, sljit_sw dstw,
1306 sljit_s32 src1, sljit_sw src1w,
1307 sljit_s32 src2, sljit_sw src2w);
1308
1309 /* Label and jump instructions. */
1310
1311 SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler);
1312
1313 /* Invert (negate) conditional type: xor (^) with 0x1 */
1314
1315 /* Integer comparison types. */
1316 #define SLJIT_EQUAL 0
1317 #define SLJIT_ZERO SLJIT_EQUAL
1318 #define SLJIT_NOT_EQUAL 1
1319 #define SLJIT_NOT_ZERO SLJIT_NOT_EQUAL
1320
1321 #define SLJIT_LESS 2
1322 #define SLJIT_SET_LESS SLJIT_SET(SLJIT_LESS)
1323 #define SLJIT_GREATER_EQUAL 3
1324 #define SLJIT_SET_GREATER_EQUAL SLJIT_SET(SLJIT_GREATER_EQUAL)
1325 #define SLJIT_GREATER 4
1326 #define SLJIT_SET_GREATER SLJIT_SET(SLJIT_GREATER)
1327 #define SLJIT_LESS_EQUAL 5
1328 #define SLJIT_SET_LESS_EQUAL SLJIT_SET(SLJIT_LESS_EQUAL)
1329 #define SLJIT_SIG_LESS 6
1330 #define SLJIT_SET_SIG_LESS SLJIT_SET(SLJIT_SIG_LESS)
1331 #define SLJIT_SIG_GREATER_EQUAL 7
1332 #define SLJIT_SET_SIG_GREATER_EQUAL SLJIT_SET(SLJIT_SIG_GREATER_EQUAL)
1333 #define SLJIT_SIG_GREATER 8
1334 #define SLJIT_SET_SIG_GREATER SLJIT_SET(SLJIT_SIG_GREATER)
1335 #define SLJIT_SIG_LESS_EQUAL 9
1336 #define SLJIT_SET_SIG_LESS_EQUAL SLJIT_SET(SLJIT_SIG_LESS_EQUAL)
1337
1338 #define SLJIT_OVERFLOW 10
1339 #define SLJIT_SET_OVERFLOW SLJIT_SET(SLJIT_OVERFLOW)
1340 #define SLJIT_NOT_OVERFLOW 11
1341
1342 /* Unlike other flags, sljit_emit_jump may destroy the carry flag. */
1343 #define SLJIT_CARRY 12
1344 #define SLJIT_SET_CARRY SLJIT_SET(SLJIT_CARRY)
1345 #define SLJIT_NOT_CARRY 13
1346
1347 /* Basic floating point comparison types.
1348
1349 Note: when the comparison result is unordered, their behaviour is unspecified. */
1350
1351 #define SLJIT_F_EQUAL 14
1352 #define SLJIT_SET_F_EQUAL SLJIT_SET(SLJIT_F_EQUAL)
1353 #define SLJIT_F_NOT_EQUAL 15
1354 #define SLJIT_SET_F_NOT_EQUAL SLJIT_SET(SLJIT_F_NOT_EQUAL)
1355 #define SLJIT_F_LESS 16
1356 #define SLJIT_SET_F_LESS SLJIT_SET(SLJIT_F_LESS)
1357 #define SLJIT_F_GREATER_EQUAL 17
1358 #define SLJIT_SET_F_GREATER_EQUAL SLJIT_SET(SLJIT_F_GREATER_EQUAL)
1359 #define SLJIT_F_GREATER 18
1360 #define SLJIT_SET_F_GREATER SLJIT_SET(SLJIT_F_GREATER)
1361 #define SLJIT_F_LESS_EQUAL 19
1362 #define SLJIT_SET_F_LESS_EQUAL SLJIT_SET(SLJIT_F_LESS_EQUAL)
1363
1364 /* Jumps when either argument contains a NaN value. */
1365 #define SLJIT_UNORDERED 20
1366 #define SLJIT_SET_UNORDERED SLJIT_SET(SLJIT_UNORDERED)
1367 /* Jumps when neither argument contains a NaN value. */
1368 #define SLJIT_ORDERED 21
1369 #define SLJIT_SET_ORDERED SLJIT_SET(SLJIT_ORDERED)
1370
1371 /* Ordered / unordered floating point comparison types.
1372
1373 Note: each comparison type has an ordered and unordered form. Some
1374 architectures supports only either of them (see: sljit_cmp_info). */
1375
1376 #define SLJIT_ORDERED_EQUAL 22
1377 #define SLJIT_SET_ORDERED_EQUAL SLJIT_SET(SLJIT_ORDERED_EQUAL)
1378 #define SLJIT_UNORDERED_OR_NOT_EQUAL 23
1379 #define SLJIT_SET_UNORDERED_OR_NOT_EQUAL SLJIT_SET(SLJIT_UNORDERED_OR_NOT_EQUAL)
1380 #define SLJIT_ORDERED_LESS 24
1381 #define SLJIT_SET_ORDERED_LESS SLJIT_SET(SLJIT_ORDERED_LESS)
1382 #define SLJIT_UNORDERED_OR_GREATER_EQUAL 25
1383 #define SLJIT_SET_UNORDERED_OR_GREATER_EQUAL SLJIT_SET(SLJIT_UNORDERED_OR_GREATER_EQUAL)
1384 #define SLJIT_ORDERED_GREATER 26
1385 #define SLJIT_SET_ORDERED_GREATER SLJIT_SET(SLJIT_ORDERED_GREATER)
1386 #define SLJIT_UNORDERED_OR_LESS_EQUAL 27
1387 #define SLJIT_SET_UNORDERED_OR_LESS_EQUAL SLJIT_SET(SLJIT_UNORDERED_OR_LESS_EQUAL)
1388
1389 #define SLJIT_UNORDERED_OR_EQUAL 28
1390 #define SLJIT_SET_UNORDERED_OR_EQUAL SLJIT_SET(SLJIT_UNORDERED_OR_EQUAL)
1391 #define SLJIT_ORDERED_NOT_EQUAL 29
1392 #define SLJIT_SET_ORDERED_NOT_EQUAL SLJIT_SET(SLJIT_ORDERED_NOT_EQUAL)
1393 #define SLJIT_UNORDERED_OR_LESS 30
1394 #define SLJIT_SET_UNORDERED_OR_LESS SLJIT_SET(SLJIT_UNORDERED_OR_LESS)
1395 #define SLJIT_ORDERED_GREATER_EQUAL 31
1396 #define SLJIT_SET_ORDERED_GREATER_EQUAL SLJIT_SET(SLJIT_ORDERED_GREATER_EQUAL)
1397 #define SLJIT_UNORDERED_OR_GREATER 32
1398 #define SLJIT_SET_UNORDERED_OR_GREATER SLJIT_SET(SLJIT_UNORDERED_OR_GREATER)
1399 #define SLJIT_ORDERED_LESS_EQUAL 33
1400 #define SLJIT_SET_ORDERED_LESS_EQUAL SLJIT_SET(SLJIT_ORDERED_LESS_EQUAL)
1401
1402 /* Unconditional jump types. */
1403 #define SLJIT_JUMP 34
1404 /* Fast calling method. See sljit_emit_fast_enter / SLJIT_FAST_RETURN. */
1405 #define SLJIT_FAST_CALL 35
1406 /* Default C calling convention. */
1407 #define SLJIT_CALL 36
1408 /* Called function must be compiled by SLJIT.
1409 See SLJIT_ENTER_REG_ARG option. */
1410 #define SLJIT_CALL_REG_ARG 37
1411
1412 /* The target can be changed during runtime (see: sljit_set_jump_addr). */
1413 #define SLJIT_REWRITABLE_JUMP 0x1000
1414 /* When this flag is passed, the execution of the current function ends and
1415 the called function returns to the caller of the current function. The
1416 stack usage is reduced before the call, but it is not necessarily reduced
1417 to zero. In the latter case the compiler needs to allocate space for some
1418 arguments and the return address must be stored on the stack as well. */
1419 #define SLJIT_CALL_RETURN 0x2000
1420
1421 /* Emit a jump instruction. The destination is not set, only the type of the jump.
1422 type must be between SLJIT_EQUAL and SLJIT_FAST_CALL
1423 type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP
1424
1425 Flags: does not modify flags. */
1426 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type);
1427
1428 /* Emit a C compiler (ABI) compatible function call.
1429 type must be SLJIT_CALL or SLJIT_CALL_REG_ARG
1430 type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP and/or SLJIT_CALL_RETURN
1431 arg_types can be specified by SLJIT_ARGSx (SLJIT_ARG_RETURN / SLJIT_ARG_VALUE) macros
1432
1433 Flags: destroy all flags. */
1434 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 arg_types);
1435
1436 /* Basic arithmetic comparison. In most architectures it is implemented as
1437 a compare operation followed by a sljit_emit_jump. However some
1438 architectures (i.e: ARM64 or MIPS) may employ special optimizations
1439 here. It is suggested to use this comparison form when appropriate.
1440 type must be between SLJIT_EQUAL and SLJIT_SIG_LESS_EQUAL
1441 type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP
1442
1443 Flags: may destroy flags. */
1444 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type,
1445 sljit_s32 src1, sljit_sw src1w,
1446 sljit_s32 src2, sljit_sw src2w);
1447
1448 /* Basic floating point comparison. In most architectures it is implemented as
1449 a SLJIT_CMP_F32/64 operation (setting appropriate flags) followed by a
1450 sljit_emit_jump. However some architectures (i.e: MIPS) may employ
1451 special optimizations here. It is suggested to use this comparison form
1452 when appropriate.
1453 type must be between SLJIT_F_EQUAL and SLJIT_ORDERED_LESS_EQUAL
1454 type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP
1455 Flags: destroy flags.
1456 Note: when an operand is NaN the behaviour depends on the comparison type. */
1457 SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_s32 type,
1458 sljit_s32 src1, sljit_sw src1w,
1459 sljit_s32 src2, sljit_sw src2w);
1460
1461 /* Set the destination of the jump to this label. */
1462 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_label(struct sljit_jump *jump, struct sljit_label* label);
1463 /* Set the destination address of the jump to this label. */
1464 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_target(struct sljit_jump *jump, sljit_uw target);
1465
1466 /* Emit an indirect jump or fast call.
1467 Direct form: set src to SLJIT_IMM() and srcw to the address
1468 Indirect form: any other valid addressing mode
1469 type must be between SLJIT_JUMP and SLJIT_FAST_CALL
1470
1471 Flags: does not modify flags. */
1472 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw);
1473
1474 /* Emit a C compiler (ABI) compatible function call.
1475 Direct form: set src to SLJIT_IMM() and srcw to the address
1476 Indirect form: any other valid addressing mode
1477 type must be SLJIT_CALL or SLJIT_CALL_REG_ARG
1478 type can be combined (or'ed) with SLJIT_CALL_RETURN
1479 arg_types can be specified by SLJIT_ARGSx (SLJIT_ARG_RETURN / SLJIT_ARG_VALUE) macros
1480
1481 Flags: destroy all flags. */
1482 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 arg_types, sljit_s32 src, sljit_sw srcw);
1483
1484 /* Perform an operation using the conditional flags as the second argument.
1485 Type must always be between SLJIT_EQUAL and SLJIT_ORDERED_LESS_EQUAL.
1486 The value represented by the type is 1, if the condition represented
1487 by the type is fulfilled, and 0 otherwise.
1488
1489 When op is SLJIT_MOV or SLJIT_MOV32:
1490 Set dst to the value represented by the type (0 or 1).
1491 Flags: - (does not modify flags)
1492 When op is SLJIT_AND, SLJIT_AND32, SLJIT_OR, SLJIT_OR32, SLJIT_XOR, or SLJIT_XOR32
1493 Performs the binary operation using dst as the first, and the value
1494 represented by type as the second argument. Result is written into dst.
1495 Flags: Z (may destroy flags) */
1496 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
1497 sljit_s32 dst, sljit_sw dstw,
1498 sljit_s32 type);
1499
1500 /* Emit a conditional mov instruction which moves source to destination,
1501 if the condition is satisfied. Unlike other arithmetic operations this
1502 instruction does not support memory access.
1503
1504 type must be between SLJIT_EQUAL and SLJIT_ORDERED_LESS_EQUAL
1505 type can be combined (or'ed) with SLJIT_32
1506 dst_reg must be a valid register
1507 src must be a valid register or immediate (SLJIT_IMM)
1508
1509 Flags: - (does not modify flags) */
1510 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
1511 sljit_s32 dst_reg,
1512 sljit_s32 src, sljit_sw srcw);
1513
1514 /* The following flags are used by sljit_emit_mem(), sljit_emit_mem_update(),
1515 sljit_emit_fmem(), and sljit_emit_fmem_update(). */
1516
1517 /* Memory load operation. This is the default. */
1518 #define SLJIT_MEM_LOAD 0x000000
1519 /* Memory store operation. */
1520 #define SLJIT_MEM_STORE 0x000200
1521
1522 /* The following flags are used by sljit_emit_mem() and sljit_emit_fmem(). */
1523
1524 /* Load or stora data from an unaligned (byte aligned) address. */
1525 #define SLJIT_MEM_UNALIGNED 0x000400
1526 /* Load or stora data from a 16 bit aligned address. */
1527 #define SLJIT_MEM_UNALIGNED_16 0x000800
1528 /* Load or stora data from a 32 bit aligned address. */
1529 #define SLJIT_MEM_UNALIGNED_32 0x001000
1530
1531 /* The following flags are used by sljit_emit_mem_update(),
1532 and sljit_emit_fmem_update(). */
1533
1534 /* Base register is updated before the memory access (default). */
1535 #define SLJIT_MEM_PRE 0x000000
1536 /* Base register is updated after the memory access. */
1537 #define SLJIT_MEM_POST 0x000400
1538
1539 /* When SLJIT_MEM_SUPP is passed, no instructions are emitted.
1540 Instead the function returns with SLJIT_SUCCESS if the instruction
1541 form is supported and SLJIT_ERR_UNSUPPORTED otherwise. This flag
1542 allows runtime checking of available instruction forms. */
1543 #define SLJIT_MEM_SUPP 0x000800
1544
1545 /* The sljit_emit_mem emits instructions for various memory operations:
1546
1547 When SLJIT_MEM_UNALIGNED / SLJIT_MEM_UNALIGNED_16 /
1548 SLJIT_MEM_UNALIGNED_32 is set in type argument:
1549 Emit instructions for unaligned memory loads or stores. When
1550 SLJIT_UNALIGNED is not defined, the only way to access unaligned
1551 memory data is using sljit_emit_mem. Otherwise all operations (e.g.
1552 sljit_emit_op1/2, or sljit_emit_fop1/2) supports unaligned access.
1553 In general, the performance of unaligned memory accesses are often
1554 lower than aligned and should be avoided.
1555
1556 When a pair of registers is passed in reg argument:
1557 Emit instructions for moving data between a register pair and
1558 memory. The register pair can be specified by the SLJIT_REG_PAIR
1559 macro. The first register is loaded from or stored into the
1560 location specified by the mem/memw arguments, and the end address
1561 of this operation is the starting address of the data transfer
1562 between the second register and memory. The type argument must
1563 be SLJIT_MOV. The SLJIT_MEM_UNALIGNED* options are allowed for
1564 this operation.
1565
1566 type must be between SLJIT_MOV and SLJIT_MOV_P and can be
1567 combined (or'ed) with SLJIT_MEM_* flags
1568 reg is a register or register pair, which is the source or
1569 destination of the operation
1570 mem must be a memory operand
1571
1572 Flags: - (does not modify flags) */
1573 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type,
1574 sljit_s32 reg,
1575 sljit_s32 mem, sljit_sw memw);
1576
1577 /* Emit a single memory load or store with update instruction.
1578 When the requested instruction form is not supported by the CPU,
1579 it returns with SLJIT_ERR_UNSUPPORTED instead of emulating the
1580 instruction. This allows specializing tight loops based on
1581 the supported instruction forms (see SLJIT_MEM_SUPP flag).
1582 Absolute address (SLJIT_MEM0) forms are never supported
1583 and the base (first) register specified by the mem argument
1584 must not be SLJIT_SP and must also be different from the
1585 register specified by the reg argument.
1586
1587 type must be between SLJIT_MOV and SLJIT_MOV_P and can be
1588 combined (or'ed) with SLJIT_MEM_* flags
1589 reg is the source or destination register of the operation
1590 mem must be a memory operand
1591
1592 Flags: - (does not modify flags) */
1593
1594 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem_update(struct sljit_compiler *compiler, sljit_s32 type,
1595 sljit_s32 reg,
1596 sljit_s32 mem, sljit_sw memw);
1597
1598 /* Same as sljit_emit_mem except the followings:
1599
1600 Loading or storing a pair of registers is not supported.
1601
1602 type must be SLJIT_MOV_F64 or SLJIT_MOV_F32 and can be
1603 combined (or'ed) with SLJIT_MEM_* flags.
1604 freg is the source or destination floating point register
1605 of the operation
1606 mem must be a memory operand
1607
1608 Flags: - (does not modify flags) */
1609
1610 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fmem(struct sljit_compiler *compiler, sljit_s32 type,
1611 sljit_s32 freg,
1612 sljit_s32 mem, sljit_sw memw);
1613
1614 /* Same as sljit_emit_mem_update except the followings:
1615
1616 type must be SLJIT_MOV_F64 or SLJIT_MOV_F32 and can be
1617 combined (or'ed) with SLJIT_MEM_* flags
1618 freg is the source or destination floating point register
1619 of the operation
1620 mem must be a memory operand
1621
1622 Flags: - (does not modify flags) */
1623
1624 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fmem_update(struct sljit_compiler *compiler, sljit_s32 type,
1625 sljit_s32 freg,
1626 sljit_s32 mem, sljit_sw memw);
1627
1628 /* Copies the base address of SLJIT_SP + offset to dst. The offset can
1629 represent the starting address of a value in the local data (stack).
1630 The offset is not limited by the local data limits, it can be any value.
1631 For example if an array of bytes are stored on the stack from
1632 offset 0x40, and R0 contains the offset of an array item plus 0x120,
1633 this item can be changed by two SLJIT instructions:
1634
1635 sljit_get_local_base(compiler, SLJIT_R1, 0, 0x40 - 0x120);
1636 sljit_emit_op1(compiler, SLJIT_MOV_U8, SLJIT_MEM2(SLJIT_R1, SLJIT_R0), 0, SLJIT_IMM, 0x5);
1637
1638 Flags: - (may destroy flags) */
1639 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_local_base(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw offset);
1640
1641 /* Store a value that can be changed runtime (see: sljit_get_const_addr / sljit_set_const)
1642 Flags: - (does not modify flags) */
1643 SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value);
1644
1645 /* Store the value of a label (see: sljit_set_put_label)
1646 Flags: - (does not modify flags) */
1647 SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw);
1648
1649 /* Set the value stored by put_label to this label. */
1650 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_put_label(struct sljit_put_label *put_label, struct sljit_label *label);
1651
1652 /* After the code generation the address for label, jump and const instructions
1653 are computed. Since these structures are freed by sljit_free_compiler, the
1654 addresses must be preserved by the user program elsewere. */
sljit_get_label_addr(struct sljit_label * label)1655 static SLJIT_INLINE sljit_uw sljit_get_label_addr(struct sljit_label *label) { return label->addr; }
sljit_get_jump_addr(struct sljit_jump * jump)1656 static SLJIT_INLINE sljit_uw sljit_get_jump_addr(struct sljit_jump *jump) { return jump->addr; }
sljit_get_const_addr(struct sljit_const * const_)1657 static SLJIT_INLINE sljit_uw sljit_get_const_addr(struct sljit_const *const_) { return const_->addr; }
1658
1659 /* Only the address and executable offset are required to perform dynamic
1660 code modifications. See sljit_get_executable_offset function. */
1661 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset);
1662 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset);
1663
1664 /* --------------------------------------------------------------------- */
1665 /* CPU specific functions */
1666 /* --------------------------------------------------------------------- */
1667
1668 /* The following function is a helper function for sljit_emit_op_custom.
1669 It returns with the real machine register index ( >=0 ) of any SLJIT_R,
1670 SLJIT_S and SLJIT_SP registers.
1671
1672 Note: it returns with -1 for virtual registers (only on x86-32). */
1673
1674 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg);
1675
1676 /* The following function is a helper function for sljit_emit_op_custom.
1677 It returns with the real machine register ( >= 0 ) index of any SLJIT_FR,
1678 and SLJIT_FS register.
1679
1680 Note: the index is always an even number on ARM-32, MIPS. */
1681
1682 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg);
1683
1684 /* Any instruction can be inserted into the instruction stream by
1685 sljit_emit_op_custom. It has a similar purpose as inline assembly.
1686 The size parameter must match to the instruction size of the target
1687 architecture:
1688
1689 x86: 0 < size <= 15. The instruction argument can be byte aligned.
1690 Thumb2: if size == 2, the instruction argument must be 2 byte aligned.
1691 if size == 4, the instruction argument must be 4 byte aligned.
1692 Otherwise: size must be 4 and instruction argument must be 4 byte aligned. */
1693
1694 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
1695 void *instruction, sljit_u32 size);
1696
1697 /* Flags were set by a 32 bit operation. */
1698 #define SLJIT_CURRENT_FLAGS_32 SLJIT_32
1699
1700 /* Flags were set by an ADD or ADDC operations. */
1701 #define SLJIT_CURRENT_FLAGS_ADD 0x01
1702 /* Flags were set by a SUB, SUBC, or NEG operation. */
1703 #define SLJIT_CURRENT_FLAGS_SUB 0x02
1704
1705 /* Flags were set by sljit_emit_op2u with SLJIT_SUB opcode.
1706 Must be combined with SLJIT_CURRENT_FLAGS_SUB. */
1707 #define SLJIT_CURRENT_FLAGS_COMPARE 0x04
1708
1709 /* Define the currently available CPU status flags. It is usually used after
1710 an sljit_emit_label or sljit_emit_op_custom operations to define which CPU
1711 status flags are available.
1712
1713 The current_flags must be a valid combination of SLJIT_SET_* and
1714 SLJIT_CURRENT_FLAGS_* constants. */
1715
1716 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_current_flags(struct sljit_compiler *compiler,
1717 sljit_s32 current_flags);
1718
1719 /* --------------------------------------------------------------------- */
1720 /* Miscellaneous utility functions */
1721 /* --------------------------------------------------------------------- */
1722
1723 /* Get the human readable name of the platform. Can be useful on platforms
1724 like ARM, where ARM and Thumb2 functions can be mixed, and it is useful
1725 to know the type of the code generator. */
1726 SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void);
1727
1728 /* Portable helper function to get an offset of a member. */
1729 #define SLJIT_OFFSETOF(base, member) ((sljit_sw)(&((base*)0x10)->member) - 0x10)
1730
1731 #if (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK)
1732
1733 /* The sljit_stack structure and its manipulation functions provides
1734 an implementation for a top-down stack. The stack top is stored
1735 in the end field of the sljit_stack structure and the stack goes
1736 down to the min_start field, so the memory region reserved for
1737 this stack is between min_start (inclusive) and end (exclusive)
1738 fields. However the application can only use the region between
1739 start (inclusive) and end (exclusive) fields. The sljit_stack_resize
1740 function can be used to extend this region up to min_start.
1741
1742 This feature uses the "address space reserve" feature of modern
1743 operating systems. Instead of allocating a large memory block
1744 applications can allocate a small memory region and extend it
1745 later without moving the content of the memory area. Therefore
1746 after a successful resize by sljit_stack_resize all pointers into
1747 this region are still valid.
1748
1749 Note:
1750 this structure may not be supported by all operating systems.
1751 end and max_limit fields are aligned to PAGE_SIZE bytes (usually
1752 4 Kbyte or more).
1753 stack should grow in larger steps, e.g. 4Kbyte, 16Kbyte or more. */
1754
1755 struct sljit_stack {
1756 /* User data, anything can be stored here.
1757 Initialized to the same value as the end field. */
1758 sljit_u8 *top;
1759 /* These members are read only. */
1760 /* End address of the stack */
1761 sljit_u8 *end;
1762 /* Current start address of the stack. */
1763 sljit_u8 *start;
1764 /* Lowest start address of the stack. */
1765 sljit_u8 *min_start;
1766 };
1767
1768 /* Allocates a new stack. Returns NULL if unsuccessful.
1769 Note: see sljit_create_compiler for the explanation of allocator_data. */
1770 SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(sljit_uw start_size, sljit_uw max_size, void *allocator_data);
1771 SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data);
1772
1773 /* Can be used to increase (extend) or decrease (shrink) the stack
1774 memory area. Returns with new_start if successful and NULL otherwise.
1775 It always fails if new_start is less than min_start or greater or equal
1776 than end fields. The fields of the stack are not changed if the returned
1777 value is NULL (the current memory content is never lost). */
1778 SLJIT_API_FUNC_ATTRIBUTE sljit_u8 *SLJIT_FUNC sljit_stack_resize(struct sljit_stack *stack, sljit_u8 *new_start);
1779
1780 #endif /* (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK) */
1781
1782 #if !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL)
1783
1784 /* Get the entry address of a given function (signed, unsigned result). */
1785 #define SLJIT_FUNC_ADDR(func_name) ((sljit_sw)func_name)
1786 #define SLJIT_FUNC_UADDR(func_name) ((sljit_uw)func_name)
1787
1788 #else /* !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL) */
1789
1790 /* All JIT related code should be placed in the same context (library, binary, etc.). */
1791
1792 /* Get the entry address of a given function (signed, unsigned result). */
1793 #define SLJIT_FUNC_ADDR(func_name) (*(sljit_sw*)(void*)func_name)
1794 #define SLJIT_FUNC_UADDR(func_name) (*(sljit_uw*)(void*)func_name)
1795
1796 /* For powerpc64, the function pointers point to a context descriptor. */
1797 struct sljit_function_context {
1798 sljit_uw addr;
1799 sljit_uw r2;
1800 sljit_uw r11;
1801 };
1802
1803 /* Fill the context arguments using the addr and the function.
1804 If func_ptr is NULL, it will not be set to the address of context
1805 If addr is NULL, the function address also comes from the func pointer. */
1806 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_function_context(void** func_ptr, struct sljit_function_context* context, sljit_uw addr, void* func);
1807
1808 #endif /* !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL) */
1809
1810 #if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
1811 /* Free unused executable memory. The allocator keeps some free memory
1812 around to reduce the number of OS executable memory allocations.
1813 This improves performance since these calls are costly. However
1814 it is sometimes desired to free all unused memory regions, e.g.
1815 before the application terminates. */
1816 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void);
1817 #endif
1818
1819 #ifdef __cplusplus
1820 } /* extern "C" */
1821 #endif
1822
1823 #endif /* SLJIT_LIR_H_ */
1824