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 /* ppc 64-bit arch dependent functions. */
28
29 #if defined(__GNUC__) || (defined(__IBM_GCC_ASM) && __IBM_GCC_ASM)
30 #define ASM_SLJIT_CLZ(src, dst) \
31 __asm__ volatile ( "cntlzd %0, %1" : "=r"(dst) : "r"(src) )
32 #elif defined(__xlc__)
33 #error "Please enable GCC syntax for inline assembly statements"
34 #else
35 #error "Must implement count leading zeroes"
36 #endif
37
38 /* Computes SLDI(63 - shift). */
39 #define PUSH_SLDI_NEG(reg, shift) \
40 push_inst(compiler, RLDICR | S(reg) | A(reg) | RLDI_SH(63 - shift) | RLDI_ME(shift))
41
load_immediate(struct sljit_compiler * compiler,sljit_s32 reg,sljit_sw imm)42 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm)
43 {
44 sljit_uw tmp;
45 sljit_uw shift;
46 sljit_uw tmp2;
47 sljit_uw shift2;
48
49 if (imm <= SIMM_MAX && imm >= SIMM_MIN)
50 return push_inst(compiler, ADDI | D(reg) | A(0) | IMM(imm));
51
52 if (((sljit_uw)imm >> 16) == 0)
53 return push_inst(compiler, ORI | S(TMP_ZERO) | A(reg) | IMM(imm));
54
55 if (imm <= 0x7fffffffl && imm >= -0x80000000l) {
56 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(imm >> 16)));
57 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;
58 }
59
60 if (((sljit_uw)imm >> 32) == 0) {
61 FAIL_IF(push_inst(compiler, ORIS | S(TMP_ZERO) | A(reg) | IMM(imm >> 16)));
62 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm)) : SLJIT_SUCCESS;
63 }
64
65 /* Count leading zeroes. */
66 tmp = (sljit_uw)((imm >= 0) ? imm : ~imm);
67 ASM_SLJIT_CLZ(tmp, shift);
68 SLJIT_ASSERT(shift > 0);
69 shift--;
70 tmp = ((sljit_uw)imm << shift);
71
72 if ((tmp & ~0xffff000000000000ul) == 0) {
73 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | (sljit_ins)(tmp >> 48)));
74 shift += 15;
75 return PUSH_SLDI_NEG(reg, shift);
76 }
77
78 if ((tmp & ~0xffffffff00000000ul) == 0) {
79 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | (sljit_ins)(tmp >> 48)));
80 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(tmp >> 32)));
81 shift += 31;
82 return PUSH_SLDI_NEG(reg, shift);
83 }
84
85 /* Cut out the 16 bit from immediate. */
86 shift += 15;
87 tmp2 = (sljit_uw)imm & (((sljit_uw)1 << (63 - shift)) - 1);
88
89 if (tmp2 <= 0xffff) {
90 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | (sljit_ins)(tmp >> 48)));
91 FAIL_IF(PUSH_SLDI_NEG(reg, shift));
92 return push_inst(compiler, ORI | S(reg) | A(reg) | (sljit_ins)tmp2);
93 }
94
95 if (tmp2 <= 0xffffffff) {
96 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | IMM(tmp >> 48)));
97 FAIL_IF(PUSH_SLDI_NEG(reg, shift));
98 FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | (sljit_ins)(tmp2 >> 16)));
99 return (imm & 0xffff) ? push_inst(compiler, ORI | S(reg) | A(reg) | IMM(tmp2)) : SLJIT_SUCCESS;
100 }
101
102 ASM_SLJIT_CLZ(tmp2, shift2);
103 tmp2 <<= shift2;
104
105 if ((tmp2 & ~0xffff000000000000ul) == 0) {
106 FAIL_IF(push_inst(compiler, ADDI | D(reg) | A(0) | (sljit_ins)(tmp >> 48)));
107 shift2 += 15;
108 shift += (63 - shift2);
109 FAIL_IF(PUSH_SLDI_NEG(reg, shift));
110 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | (sljit_ins)(tmp2 >> 48)));
111 return PUSH_SLDI_NEG(reg, shift2);
112 }
113
114 /* The general version. */
115 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | (sljit_ins)((sljit_uw)imm >> 48)));
116 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm >> 32)));
117 FAIL_IF(PUSH_SLDI_NEG(reg, 31));
118 FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | IMM(imm >> 16)));
119 return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(imm));
120 }
121
122 #undef PUSH_SLDI_NEG
123
124 #define CLRLDI(dst, src, n) \
125 (RLDICL | S(src) | A(dst) | RLDI_SH(0) | RLDI_MB(n))
126
127 /* Sign extension for integer operations. */
128 #define UN_EXTS() \
129 if ((flags & (ALT_SIGN_EXT | REG2_SOURCE)) == (ALT_SIGN_EXT | REG2_SOURCE)) { \
130 FAIL_IF(push_inst(compiler, EXTSW | S(src2) | A(TMP_REG2))); \
131 src2 = TMP_REG2; \
132 }
133
134 #define BIN_EXTS() \
135 if (flags & ALT_SIGN_EXT) { \
136 if (flags & REG1_SOURCE) { \
137 FAIL_IF(push_inst(compiler, EXTSW | S(src1) | A(TMP_REG1))); \
138 src1 = TMP_REG1; \
139 } \
140 if (flags & REG2_SOURCE) { \
141 FAIL_IF(push_inst(compiler, EXTSW | S(src2) | A(TMP_REG2))); \
142 src2 = TMP_REG2; \
143 } \
144 }
145
146 #define BIN_IMM_EXTS() \
147 if ((flags & (ALT_SIGN_EXT | REG1_SOURCE)) == (ALT_SIGN_EXT | REG1_SOURCE)) { \
148 FAIL_IF(push_inst(compiler, EXTSW | S(src1) | A(TMP_REG1))); \
149 src1 = TMP_REG1; \
150 }
151
emit_single_op(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 flags,sljit_s32 dst,sljit_s32 src1,sljit_s32 src2)152 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
153 sljit_s32 dst, sljit_s32 src1, sljit_s32 src2)
154 {
155 sljit_u32 imm;
156
157 switch (op) {
158 case SLJIT_MOV:
159 case SLJIT_MOV_P:
160 SLJIT_ASSERT(src1 == TMP_REG1);
161 if (dst != src2)
162 return push_inst(compiler, OR | S(src2) | A(dst) | B(src2));
163 return SLJIT_SUCCESS;
164
165 case SLJIT_MOV_U32:
166 case SLJIT_MOV_S32:
167 SLJIT_ASSERT(src1 == TMP_REG1);
168 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
169 if (op == SLJIT_MOV_S32)
170 return push_inst(compiler, EXTSW | S(src2) | A(dst));
171 return push_inst(compiler, CLRLDI(dst, src2, 32));
172 }
173 else {
174 SLJIT_ASSERT(dst == src2);
175 }
176 return SLJIT_SUCCESS;
177
178 case SLJIT_MOV_U8:
179 case SLJIT_MOV_S8:
180 SLJIT_ASSERT(src1 == TMP_REG1);
181 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
182 if (op == SLJIT_MOV_S8)
183 return push_inst(compiler, EXTSB | S(src2) | A(dst));
184 return push_inst(compiler, CLRLDI(dst, src2, 56));
185 }
186 else if ((flags & REG_DEST) && op == SLJIT_MOV_S8)
187 return push_inst(compiler, EXTSB | S(src2) | A(dst));
188 else {
189 SLJIT_ASSERT(dst == src2);
190 }
191 return SLJIT_SUCCESS;
192
193 case SLJIT_MOV_U16:
194 case SLJIT_MOV_S16:
195 SLJIT_ASSERT(src1 == TMP_REG1);
196 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
197 if (op == SLJIT_MOV_S16)
198 return push_inst(compiler, EXTSH | S(src2) | A(dst));
199 return push_inst(compiler, CLRLDI(dst, src2, 48));
200 }
201 else {
202 SLJIT_ASSERT(dst == src2);
203 }
204 return SLJIT_SUCCESS;
205
206 case SLJIT_CLZ:
207 SLJIT_ASSERT(src1 == TMP_REG1);
208 return push_inst(compiler, ((flags & ALT_FORM1) ? CNTLZW : CNTLZD) | S(src2) | A(dst));
209
210 case SLJIT_CTZ:
211 SLJIT_ASSERT(src1 == TMP_REG1);
212 FAIL_IF(push_inst(compiler, NEG | D(TMP_REG1) | A(src2)));
213 FAIL_IF(push_inst(compiler, AND | S(src2) | A(dst) | B(TMP_REG1)));
214 FAIL_IF(push_inst(compiler, ((flags & ALT_FORM1) ? CNTLZW : CNTLZD) | S(dst) | A(dst)));
215 FAIL_IF(push_inst(compiler, ADDI | D(TMP_REG1) | A(dst) | IMM((flags & ALT_FORM1) ? -32 : -64)));
216 /* The highest bits are set, if dst < bit width, zero otherwise. */
217 FAIL_IF(push_inst(compiler, ((flags & ALT_FORM1) ? SRWI(27) : SRDI(58)) | S(TMP_REG1) | A(TMP_REG1)));
218 return push_inst(compiler, XOR | S(dst) | A(dst) | B(TMP_REG1));
219
220 case SLJIT_ADD:
221 if (flags & ALT_FORM1) {
222 if (flags & ALT_SIGN_EXT) {
223 FAIL_IF(push_inst(compiler, SLDI(32) | S(src1) | A(TMP_REG1)));
224 src1 = TMP_REG1;
225 FAIL_IF(push_inst(compiler, SLDI(32) | S(src2) | A(TMP_REG2)));
226 src2 = TMP_REG2;
227 }
228 /* Setting XER SO is not enough, CR SO is also needed. */
229 FAIL_IF(push_inst(compiler, ADD | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2)));
230 if (flags & ALT_SIGN_EXT)
231 return push_inst(compiler, SRDI(32) | S(dst) | A(dst));
232 return SLJIT_SUCCESS;
233 }
234
235 if (flags & ALT_FORM2) {
236 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
237 SLJIT_ASSERT(src2 == TMP_REG2);
238
239 if (flags & ALT_FORM3)
240 return push_inst(compiler, ADDIS | D(dst) | A(src1) | compiler->imm);
241
242 imm = compiler->imm;
243
244 if (flags & ALT_FORM4) {
245 FAIL_IF(push_inst(compiler, ADDIS | D(dst) | A(src1) | (((imm >> 16) & 0xffff) + ((imm >> 15) & 0x1))));
246 src1 = dst;
247 }
248
249 return push_inst(compiler, ADDI | D(dst) | A(src1) | (imm & 0xffff));
250 }
251 if (flags & ALT_FORM3) {
252 SLJIT_ASSERT(src2 == TMP_REG2);
253 BIN_IMM_EXTS();
254 return push_inst(compiler, ADDIC | D(dst) | A(src1) | compiler->imm);
255 }
256 if (flags & ALT_FORM4) {
257 if (flags & ALT_FORM5)
258 FAIL_IF(push_inst(compiler, ADDI | D(dst) | A(src1) | compiler->imm));
259 else
260 FAIL_IF(push_inst(compiler, ADD | D(dst) | A(src1) | B(src2)));
261 return push_inst(compiler, CMPI | A(dst) | 0);
262 }
263 if (!(flags & ALT_SET_FLAGS))
264 return push_inst(compiler, ADD | D(dst) | A(src1) | B(src2));
265 BIN_EXTS();
266 if (flags & ALT_FORM5)
267 return push_inst(compiler, ADDC | RC(ALT_SET_FLAGS) | D(dst) | A(src1) | B(src2));
268 return push_inst(compiler, ADD | RC(flags) | D(dst) | A(src1) | B(src2));
269
270 case SLJIT_ADDC:
271 BIN_EXTS();
272 return push_inst(compiler, ADDE | D(dst) | A(src1) | B(src2));
273
274 case SLJIT_SUB:
275 if (flags & ALT_FORM1) {
276 if (flags & ALT_FORM2) {
277 FAIL_IF(push_inst(compiler, CMPLI | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | compiler->imm));
278 if (!(flags & ALT_FORM3))
279 return SLJIT_SUCCESS;
280 return push_inst(compiler, ADDI | D(dst) | A(src1) | (-compiler->imm & 0xffff));
281 }
282 FAIL_IF(push_inst(compiler, CMPL | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | B(src2)));
283 if (!(flags & ALT_FORM3))
284 return SLJIT_SUCCESS;
285 return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
286 }
287
288 if (flags & ALT_FORM2) {
289 if (flags & ALT_FORM3) {
290 FAIL_IF(push_inst(compiler, CMPI | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | compiler->imm));
291 if (!(flags & ALT_FORM4))
292 return SLJIT_SUCCESS;
293 return push_inst(compiler, ADDI | D(dst) | A(src1) | (-compiler->imm & 0xffff));
294 }
295 FAIL_IF(push_inst(compiler, CMP | CRD(0 | ((flags & ALT_SIGN_EXT) ? 0 : 1)) | A(src1) | B(src2)));
296 if (!(flags & ALT_FORM4))
297 return SLJIT_SUCCESS;
298 return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
299 }
300
301 if (flags & ALT_FORM3) {
302 if (flags & ALT_SIGN_EXT) {
303 if (src1 != TMP_ZERO) {
304 FAIL_IF(push_inst(compiler, SLDI(32) | S(src1) | A(TMP_REG1)));
305 src1 = TMP_REG1;
306 }
307 if (src2 != TMP_ZERO) {
308 FAIL_IF(push_inst(compiler, SLDI(32) | S(src2) | A(TMP_REG2)));
309 src2 = TMP_REG2;
310 }
311 }
312
313 /* Setting XER SO is not enough, CR SO is also needed. */
314 if (src1 != TMP_ZERO)
315 FAIL_IF(push_inst(compiler, SUBF | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1)));
316 else
317 FAIL_IF(push_inst(compiler, NEG | OE(ALT_SET_FLAGS) | RC(ALT_SET_FLAGS) | D(dst) | A(src2)));
318
319 if (flags & ALT_SIGN_EXT)
320 return push_inst(compiler, SRDI(32) | S(dst) | A(dst));
321 return SLJIT_SUCCESS;
322 }
323
324 if (flags & ALT_FORM4) {
325 /* Flags does not set: BIN_IMM_EXTS unnecessary. */
326 SLJIT_ASSERT(src2 == TMP_REG2);
327 return push_inst(compiler, SUBFIC | D(dst) | A(src1) | compiler->imm);
328 }
329
330 if (!(flags & ALT_SET_FLAGS)) {
331 SLJIT_ASSERT(src1 != TMP_ZERO);
332 return push_inst(compiler, SUBF | D(dst) | A(src2) | B(src1));
333 }
334
335 BIN_EXTS();
336 if (flags & ALT_FORM5)
337 return push_inst(compiler, SUBFC | RC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));
338
339 if (src1 != TMP_ZERO)
340 return push_inst(compiler, SUBF | RC(ALT_SET_FLAGS) | D(dst) | A(src2) | B(src1));
341 return push_inst(compiler, NEG | RC(ALT_SET_FLAGS) | D(dst) | A(src2));
342
343 case SLJIT_SUBC:
344 BIN_EXTS();
345 return push_inst(compiler, SUBFE | D(dst) | A(src2) | B(src1));
346
347 case SLJIT_MUL:
348 if (flags & ALT_FORM1) {
349 SLJIT_ASSERT(src2 == TMP_REG2);
350 return push_inst(compiler, MULLI | D(dst) | A(src1) | compiler->imm);
351 }
352 BIN_EXTS();
353 if (flags & ALT_FORM2)
354 return push_inst(compiler, MULLW | OE(flags) | RC(flags) | D(dst) | A(src2) | B(src1));
355 return push_inst(compiler, MULLD | OE(flags) | RC(flags) | D(dst) | A(src2) | B(src1));
356
357 case SLJIT_AND:
358 if (flags & ALT_FORM1) {
359 SLJIT_ASSERT(src2 == TMP_REG2);
360 return push_inst(compiler, ANDI | S(src1) | A(dst) | compiler->imm);
361 }
362 if (flags & ALT_FORM2) {
363 SLJIT_ASSERT(src2 == TMP_REG2);
364 return push_inst(compiler, ANDIS | S(src1) | A(dst) | compiler->imm);
365 }
366 return push_inst(compiler, AND | RC(flags) | S(src1) | A(dst) | B(src2));
367
368 case SLJIT_OR:
369 if (flags & ALT_FORM1) {
370 SLJIT_ASSERT(src2 == TMP_REG2);
371 return push_inst(compiler, ORI | S(src1) | A(dst) | compiler->imm);
372 }
373 if (flags & ALT_FORM2) {
374 SLJIT_ASSERT(src2 == TMP_REG2);
375 return push_inst(compiler, ORIS | S(src1) | A(dst) | compiler->imm);
376 }
377 if (flags & ALT_FORM3) {
378 SLJIT_ASSERT(src2 == TMP_REG2);
379 imm = compiler->imm;
380
381 FAIL_IF(push_inst(compiler, ORI | S(src1) | A(dst) | IMM(imm)));
382 return push_inst(compiler, ORIS | S(dst) | A(dst) | IMM(imm >> 16));
383 }
384 return push_inst(compiler, OR | RC(flags) | S(src1) | A(dst) | B(src2));
385
386 case SLJIT_XOR:
387 if (flags & ALT_FORM1) {
388 SLJIT_ASSERT(src2 == TMP_REG2);
389 return push_inst(compiler, XORI | S(src1) | A(dst) | compiler->imm);
390 }
391 if (flags & ALT_FORM2) {
392 SLJIT_ASSERT(src2 == TMP_REG2);
393 return push_inst(compiler, XORIS | S(src1) | A(dst) | compiler->imm);
394 }
395 if (flags & ALT_FORM3) {
396 SLJIT_ASSERT(src2 == TMP_REG2);
397 imm = compiler->imm;
398
399 FAIL_IF(push_inst(compiler, XORI | S(src1) | A(dst) | IMM(imm)));
400 return push_inst(compiler, XORIS | S(dst) | A(dst) | IMM(imm >> 16));
401 }
402 if (flags & ALT_FORM4) {
403 SLJIT_ASSERT(src1 == TMP_REG1);
404 UN_EXTS();
405 return push_inst(compiler, NOR | RC(flags) | S(src2) | A(dst) | B(src2));
406 }
407 return push_inst(compiler, XOR | RC(flags) | S(src1) | A(dst) | B(src2));
408
409 case SLJIT_SHL:
410 case SLJIT_MSHL:
411 if (flags & ALT_FORM1) {
412 SLJIT_ASSERT(src2 == TMP_REG2);
413 imm = compiler->imm;
414
415 if (flags & ALT_FORM2) {
416 imm &= 0x1f;
417 return push_inst(compiler, SLWI(imm) | RC(flags) | S(src1) | A(dst));
418 }
419
420 imm &= 0x3f;
421 return push_inst(compiler, SLDI(imm) | RC(flags) | S(src1) | A(dst));
422 }
423
424 if (op == SLJIT_MSHL) {
425 FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | ((flags & ALT_FORM2) ? 0x1f : 0x3f)));
426 src2 = TMP_REG2;
427 }
428
429 return push_inst(compiler, ((flags & ALT_FORM2) ? SLW : SLD) | RC(flags) | S(src1) | A(dst) | B(src2));
430
431 case SLJIT_LSHR:
432 case SLJIT_MLSHR:
433 if (flags & ALT_FORM1) {
434 SLJIT_ASSERT(src2 == TMP_REG2);
435 imm = compiler->imm;
436
437 if (flags & ALT_FORM2) {
438 imm &= 0x1f;
439 /* Since imm can be 0, SRWI() cannot be used. */
440 return push_inst(compiler, RLWINM | RC(flags) | S(src1) | A(dst) | RLWI_SH((32 - imm) & 0x1f) | RLWI_MBE(imm, 31));
441 }
442
443 imm &= 0x3f;
444 /* Since imm can be 0, SRDI() cannot be used. */
445 return push_inst(compiler, RLDICL | RC(flags) | S(src1) | A(dst) | RLDI_SH((64 - imm) & 0x3f) | RLDI_MB(imm));
446 }
447
448 if (op == SLJIT_MLSHR) {
449 FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | ((flags & ALT_FORM2) ? 0x1f : 0x3f)));
450 src2 = TMP_REG2;
451 }
452
453 return push_inst(compiler, ((flags & ALT_FORM2) ? SRW : SRD) | RC(flags) | S(src1) | A(dst) | B(src2));
454
455 case SLJIT_ASHR:
456 case SLJIT_MASHR:
457 if (flags & ALT_FORM1) {
458 SLJIT_ASSERT(src2 == TMP_REG2);
459 imm = compiler->imm;
460
461 if (flags & ALT_FORM2) {
462 imm &= 0x1f;
463 return push_inst(compiler, SRAWI | RC(flags) | S(src1) | A(dst) | (imm << 11));
464 }
465
466 imm &= 0x3f;
467 return push_inst(compiler, SRADI | RC(flags) | S(src1) | A(dst) | RLDI_SH(imm));
468 }
469
470 if (op == SLJIT_MASHR) {
471 FAIL_IF(push_inst(compiler, ANDI | S(src2) | A(TMP_REG2) | ((flags & ALT_FORM2) ? 0x1f : 0x3f)));
472 src2 = TMP_REG2;
473 }
474
475 return push_inst(compiler, ((flags & ALT_FORM2) ? SRAW : SRAD) | RC(flags) | S(src1) | A(dst) | B(src2));
476
477 case SLJIT_ROTL:
478 case SLJIT_ROTR:
479 if (flags & ALT_FORM1) {
480 SLJIT_ASSERT(src2 == TMP_REG2);
481 imm = compiler->imm;
482
483 if (op == SLJIT_ROTR)
484 imm = (sljit_u32)(-(sljit_s32)imm);
485
486 if (flags & ALT_FORM2) {
487 imm &= 0x1f;
488 return push_inst(compiler, RLWINM | S(src1) | A(dst) | RLWI_SH(imm) | RLWI_MBE(0, 31));
489 }
490
491 imm &= 0x3f;
492 return push_inst(compiler, RLDICL | S(src1) | A(dst) | RLDI_SH(imm));
493 }
494
495 if (op == SLJIT_ROTR) {
496 FAIL_IF(push_inst(compiler, SUBFIC | D(TMP_REG2) | A(src2) | 0));
497 src2 = TMP_REG2;
498 }
499
500 return push_inst(compiler, ((flags & ALT_FORM2) ? (RLWNM | RLWI_MBE(0, 31)) : (RLDCL | RLDI_MB(0))) | S(src1) | A(dst) | B(src2));
501 }
502
503 SLJIT_UNREACHABLE();
504 return SLJIT_SUCCESS;
505 }
506
call_with_args(struct sljit_compiler * compiler,sljit_s32 arg_types,sljit_s32 * src)507 static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
508 {
509 sljit_s32 arg_count = 0;
510 sljit_s32 word_arg_count = 0;
511 sljit_s32 types = 0;
512 sljit_s32 reg = 0;
513
514 if (src)
515 reg = *src & REG_MASK;
516
517 arg_types >>= SLJIT_ARG_SHIFT;
518
519 while (arg_types) {
520 types = (types << SLJIT_ARG_SHIFT) | (arg_types & SLJIT_ARG_MASK);
521
522 switch (arg_types & SLJIT_ARG_MASK) {
523 case SLJIT_ARG_TYPE_F64:
524 case SLJIT_ARG_TYPE_F32:
525 arg_count++;
526 break;
527 default:
528 arg_count++;
529 word_arg_count++;
530
531 if (arg_count != word_arg_count && arg_count == reg) {
532 FAIL_IF(push_inst(compiler, OR | S(reg) | A(TMP_CALL_REG) | B(reg)));
533 *src = TMP_CALL_REG;
534 }
535 break;
536 }
537
538 arg_types >>= SLJIT_ARG_SHIFT;
539 }
540
541 while (types) {
542 switch (types & SLJIT_ARG_MASK) {
543 case SLJIT_ARG_TYPE_F64:
544 case SLJIT_ARG_TYPE_F32:
545 arg_count--;
546 break;
547 default:
548 if (arg_count != word_arg_count)
549 FAIL_IF(push_inst(compiler, OR | S(word_arg_count) | A(arg_count) | B(word_arg_count)));
550
551 arg_count--;
552 word_arg_count--;
553 break;
554 }
555
556 types >>= SLJIT_ARG_SHIFT;
557 }
558
559 return SLJIT_SUCCESS;
560 }
561
emit_const(struct sljit_compiler * compiler,sljit_s32 reg,sljit_sw init_value)562 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw init_value)
563 {
564 FAIL_IF(push_inst(compiler, ADDIS | D(reg) | A(0) | IMM(init_value >> 48)));
565 FAIL_IF(push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value >> 32)));
566 FAIL_IF(push_inst(compiler, SLDI(32) | S(reg) | A(reg)));
567 FAIL_IF(push_inst(compiler, ORIS | S(reg) | A(reg) | IMM(init_value >> 16)));
568 return push_inst(compiler, ORI | S(reg) | A(reg) | IMM(init_value));
569 }
570
sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)571 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
572 sljit_s32 dst, sljit_sw dstw,
573 sljit_s32 src, sljit_sw srcw)
574 {
575 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
576
577 if (src == SLJIT_IMM) {
578 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32)
579 srcw = (sljit_s32)srcw;
580
581 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
582 src = TMP_REG1;
583 } else if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) {
584 if (FAST_IS_REG(src))
585 FAIL_IF(push_inst(compiler, EXTSW | S(src) | A(TMP_REG1)));
586 else
587 FAIL_IF(emit_op_mem(compiler, INT_DATA | SIGNED_DATA | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
588 src = TMP_REG1;
589 }
590
591 if (FAST_IS_REG(src)) {
592 FAIL_IF(push_inst(compiler, STD | S(src) | A(SLJIT_SP) | TMP_MEM_OFFSET));
593 FAIL_IF(push_inst(compiler, LFD | FS(TMP_FREG1) | A(SLJIT_SP) | TMP_MEM_OFFSET));
594 } else
595 FAIL_IF(emit_op_mem(compiler, DOUBLE_DATA | LOAD_DATA, TMP_FREG1, src, srcw, TMP_REG1));
596
597 FAIL_IF(push_inst(compiler, FCFID | FD(dst_r) | FB(TMP_FREG1)));
598
599 if (op & SLJIT_32)
600 FAIL_IF(push_inst(compiler, FRSP | FD(dst_r) | FB(dst_r)));
601
602 if (dst & SLJIT_MEM)
603 return emit_op_mem(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, TMP_REG1);
604 return SLJIT_SUCCESS;
605 }
606
sljit_emit_fop1_conv_f64_from_uw(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 dst,sljit_sw dstw,sljit_s32 src,sljit_sw srcw)607 static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_uw(struct sljit_compiler *compiler, sljit_s32 op,
608 sljit_s32 dst, sljit_sw dstw,
609 sljit_s32 src, sljit_sw srcw)
610 {
611 sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
612
613 if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_U32) {
614 if (src == SLJIT_IMM) {
615 FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_u32)srcw));
616 src = TMP_REG1;
617 } else {
618 if (FAST_IS_REG(src))
619 FAIL_IF(push_inst(compiler, CLRLDI(TMP_REG1, src, 32)));
620 else
621 FAIL_IF(emit_op_mem(compiler, INT_DATA | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
622 src = TMP_REG1;
623 }
624
625 FAIL_IF(push_inst(compiler, STD | S(src) | A(SLJIT_SP) | TMP_MEM_OFFSET));
626 FAIL_IF(push_inst(compiler, LFD | FS(TMP_FREG1) | A(SLJIT_SP) | TMP_MEM_OFFSET));
627 FAIL_IF(push_inst(compiler, FCFID | FD(dst_r) | FB(TMP_FREG1)));
628 } else {
629 if (src == SLJIT_IMM) {
630 FAIL_IF(load_immediate(compiler, TMP_REG1, srcw));
631 src = TMP_REG1;
632 } else if (src & SLJIT_MEM) {
633 FAIL_IF(emit_op_mem(compiler, WORD_DATA | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
634 src = TMP_REG1;
635 }
636
637 FAIL_IF(push_inst(compiler, CMPI | CRD(0 | 1) | A(src) | 0));
638 FAIL_IF(push_inst(compiler, BCx | (12 << 21) | (0 << 16) | 20));
639 FAIL_IF(push_inst(compiler, STD | S(src) | A(SLJIT_SP) | TMP_MEM_OFFSET));
640 FAIL_IF(push_inst(compiler, LFD | FS(TMP_FREG1) | A(SLJIT_SP) | TMP_MEM_OFFSET));
641 FAIL_IF(push_inst(compiler, FCFID | FD(dst_r) | FB(TMP_FREG1)));
642 FAIL_IF(push_inst(compiler, Bx | ((op & SLJIT_32) ? 36 : 32)));
643
644 if (op & SLJIT_32)
645 FAIL_IF(push_inst(compiler, RLWINM | S(src) | A(TMP_REG2) | RLWI_SH(10) | RLWI_MBE(10, 21)));
646 else
647 FAIL_IF(push_inst(compiler, ANDI | S(src) | A(TMP_REG2) | 0x1));
648
649 /* Shift right. */
650 FAIL_IF(push_inst(compiler, RLDICL | S(src) | A(TMP_REG1) | RLDI_SH(63) | RLDI_MB(1)));
651
652 if (op & SLJIT_32)
653 FAIL_IF(push_inst(compiler, RLDICR | S(TMP_REG1) | A(TMP_REG1) | RLDI_SH(0) | RLDI_ME(53)));
654
655 FAIL_IF(push_inst(compiler, OR | S(TMP_REG1) | A(TMP_REG1) | B(TMP_REG2)));
656
657 FAIL_IF(push_inst(compiler, STD | S(TMP_REG1) | A(SLJIT_SP) | TMP_MEM_OFFSET));
658 FAIL_IF(push_inst(compiler, LFD | FS(TMP_FREG1) | A(SLJIT_SP) | TMP_MEM_OFFSET));
659 FAIL_IF(push_inst(compiler, FCFID | FD(dst_r) | FB(TMP_FREG1)));
660 FAIL_IF(push_inst(compiler, FADD | FD(dst_r) | FA(dst_r) | FB(dst_r)));
661 }
662
663 if (op & SLJIT_32)
664 FAIL_IF(push_inst(compiler, FRSP | FD(dst_r) | FB(dst_r)));
665
666 if (dst & SLJIT_MEM)
667 return emit_op_mem(compiler, FLOAT_DATA(op), TMP_FREG1, dst, dstw, TMP_REG1);
668 return SLJIT_SUCCESS;
669 }
670
sljit_emit_fset64(struct sljit_compiler * compiler,sljit_s32 freg,sljit_f64 value)671 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset64(struct sljit_compiler *compiler,
672 sljit_s32 freg, sljit_f64 value)
673 {
674 union {
675 sljit_sw imm;
676 sljit_f64 value;
677 } u;
678
679 CHECK_ERROR();
680 CHECK(check_sljit_emit_fset64(compiler, freg, value));
681
682 u.value = value;
683
684 if (u.imm != 0)
685 FAIL_IF(load_immediate(compiler, TMP_REG1, u.imm));
686
687 FAIL_IF(push_inst(compiler, STD | S(u.imm != 0 ? TMP_REG1 : TMP_ZERO) | A(SLJIT_SP) | TMP_MEM_OFFSET));
688 return push_inst(compiler, LFD | FS(freg) | A(SLJIT_SP) | TMP_MEM_OFFSET);
689 }
690
sljit_emit_fcopy(struct sljit_compiler * compiler,sljit_s32 op,sljit_s32 freg,sljit_s32 reg)691 SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fcopy(struct sljit_compiler *compiler, sljit_s32 op,
692 sljit_s32 freg, sljit_s32 reg)
693 {
694 CHECK_ERROR();
695 CHECK(check_sljit_emit_fcopy(compiler, op, freg, reg));
696
697 if (GET_OPCODE(op) == SLJIT_COPY_TO_F64) {
698 FAIL_IF(push_inst(compiler, ((op & SLJIT_32) ? STW : STD) | S(reg) | A(SLJIT_SP) | TMP_MEM_OFFSET));
699 return push_inst(compiler, ((op & SLJIT_32) ? LFS : LFD) | FS(freg) | A(SLJIT_SP) | TMP_MEM_OFFSET);
700 }
701
702 FAIL_IF(push_inst(compiler, ((op & SLJIT_32) ? STFS : STFD) | FS(freg) | A(SLJIT_SP) | TMP_MEM_OFFSET));
703 return push_inst(compiler, ((op & SLJIT_32) ? LWZ : LD) | S(reg) | A(SLJIT_SP) | TMP_MEM_OFFSET);
704 }
705
sljit_set_jump_addr(sljit_uw addr,sljit_uw new_target,sljit_sw executable_offset)706 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
707 {
708 sljit_ins *inst = (sljit_ins*)addr;
709 SLJIT_UNUSED_ARG(executable_offset);
710
711 SLJIT_UPDATE_WX_FLAGS(inst, inst + 5, 0);
712 inst[0] = (inst[0] & 0xffff0000u) | ((sljit_ins)(new_target >> 48) & 0xffff);
713 inst[1] = (inst[1] & 0xffff0000u) | ((sljit_ins)(new_target >> 32) & 0xffff);
714 inst[3] = (inst[3] & 0xffff0000u) | ((sljit_ins)(new_target >> 16) & 0xffff);
715 inst[4] = (inst[4] & 0xffff0000u) | ((sljit_ins)new_target & 0xffff);
716 SLJIT_UPDATE_WX_FLAGS(inst, inst + 5, 1);
717 inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
718 SLJIT_CACHE_FLUSH(inst, inst + 5);
719 }
720
