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2827822e AG |
1 | /* |
2 | * Tiny Code Generator for QEMU | |
3 | * | |
4 | * Copyright (c) 2009 Ulrich Hecht <uli@suse.de> | |
48bb3750 RH |
5 | * Copyright (c) 2009 Alexander Graf <agraf@suse.de> |
6 | * Copyright (c) 2010 Richard Henderson <rth@twiddle.net> | |
2827822e AG |
7 | * |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
24 | * THE SOFTWARE. | |
25 | */ | |
26 | ||
3cf246f0 RH |
27 | #include "tcg-be-null.h" |
28 | ||
a01fc30d RH |
29 | /* We only support generating code for 64-bit mode. */ |
30 | #if TCG_TARGET_REG_BITS != 64 | |
31 | #error "unsupported code generation mode" | |
32 | #endif | |
33 | ||
c9baa30f RH |
34 | #include "elf.h" |
35 | ||
48bb3750 RH |
36 | /* ??? The translation blocks produced by TCG are generally small enough to |
37 | be entirely reachable with a 16-bit displacement. Leaving the option for | |
38 | a 32-bit displacement here Just In Case. */ | |
39 | #define USE_LONG_BRANCHES 0 | |
40 | ||
41 | #define TCG_CT_CONST_32 0x0100 | |
48bb3750 | 42 | #define TCG_CT_CONST_MULI 0x0800 |
48bb3750 RH |
43 | #define TCG_CT_CONST_ORI 0x2000 |
44 | #define TCG_CT_CONST_XORI 0x4000 | |
45 | #define TCG_CT_CONST_CMPI 0x8000 | |
46 | ||
47 | /* Several places within the instruction set 0 means "no register" | |
48 | rather than TCG_REG_R0. */ | |
49 | #define TCG_REG_NONE 0 | |
50 | ||
51 | /* A scratch register that may be be used throughout the backend. */ | |
52 | #define TCG_TMP0 TCG_REG_R14 | |
53 | ||
54 | #ifdef CONFIG_USE_GUEST_BASE | |
55 | #define TCG_GUEST_BASE_REG TCG_REG_R13 | |
56 | #else | |
57 | #define TCG_GUEST_BASE_REG TCG_REG_R0 | |
58 | #endif | |
59 | ||
60 | #ifndef GUEST_BASE | |
61 | #define GUEST_BASE 0 | |
62 | #endif | |
63 | ||
64 | ||
65 | /* All of the following instructions are prefixed with their instruction | |
66 | format, and are defined as 8- or 16-bit quantities, even when the two | |
67 | halves of the 16-bit quantity may appear 32 bits apart in the insn. | |
68 | This makes it easy to copy the values from the tables in Appendix B. */ | |
69 | typedef enum S390Opcode { | |
70 | RIL_AFI = 0xc209, | |
71 | RIL_AGFI = 0xc208, | |
3790b918 | 72 | RIL_ALFI = 0xc20b, |
48bb3750 RH |
73 | RIL_ALGFI = 0xc20a, |
74 | RIL_BRASL = 0xc005, | |
75 | RIL_BRCL = 0xc004, | |
76 | RIL_CFI = 0xc20d, | |
77 | RIL_CGFI = 0xc20c, | |
78 | RIL_CLFI = 0xc20f, | |
79 | RIL_CLGFI = 0xc20e, | |
80 | RIL_IIHF = 0xc008, | |
81 | RIL_IILF = 0xc009, | |
82 | RIL_LARL = 0xc000, | |
83 | RIL_LGFI = 0xc001, | |
84 | RIL_LGRL = 0xc408, | |
85 | RIL_LLIHF = 0xc00e, | |
86 | RIL_LLILF = 0xc00f, | |
87 | RIL_LRL = 0xc40d, | |
88 | RIL_MSFI = 0xc201, | |
89 | RIL_MSGFI = 0xc200, | |
90 | RIL_NIHF = 0xc00a, | |
91 | RIL_NILF = 0xc00b, | |
92 | RIL_OIHF = 0xc00c, | |
93 | RIL_OILF = 0xc00d, | |
3790b918 | 94 | RIL_SLFI = 0xc205, |
0db921e6 | 95 | RIL_SLGFI = 0xc204, |
48bb3750 RH |
96 | RIL_XIHF = 0xc006, |
97 | RIL_XILF = 0xc007, | |
98 | ||
99 | RI_AGHI = 0xa70b, | |
100 | RI_AHI = 0xa70a, | |
101 | RI_BRC = 0xa704, | |
102 | RI_IIHH = 0xa500, | |
103 | RI_IIHL = 0xa501, | |
104 | RI_IILH = 0xa502, | |
105 | RI_IILL = 0xa503, | |
106 | RI_LGHI = 0xa709, | |
107 | RI_LLIHH = 0xa50c, | |
108 | RI_LLIHL = 0xa50d, | |
109 | RI_LLILH = 0xa50e, | |
110 | RI_LLILL = 0xa50f, | |
111 | RI_MGHI = 0xa70d, | |
112 | RI_MHI = 0xa70c, | |
113 | RI_NIHH = 0xa504, | |
114 | RI_NIHL = 0xa505, | |
115 | RI_NILH = 0xa506, | |
116 | RI_NILL = 0xa507, | |
117 | RI_OIHH = 0xa508, | |
118 | RI_OIHL = 0xa509, | |
119 | RI_OILH = 0xa50a, | |
120 | RI_OILL = 0xa50b, | |
121 | ||
122 | RIE_CGIJ = 0xec7c, | |
123 | RIE_CGRJ = 0xec64, | |
124 | RIE_CIJ = 0xec7e, | |
125 | RIE_CLGRJ = 0xec65, | |
126 | RIE_CLIJ = 0xec7f, | |
127 | RIE_CLGIJ = 0xec7d, | |
128 | RIE_CLRJ = 0xec77, | |
129 | RIE_CRJ = 0xec76, | |
d5690ea4 | 130 | RIE_RISBG = 0xec55, |
48bb3750 RH |
131 | |
132 | RRE_AGR = 0xb908, | |
3790b918 RH |
133 | RRE_ALGR = 0xb90a, |
134 | RRE_ALCR = 0xb998, | |
135 | RRE_ALCGR = 0xb988, | |
48bb3750 RH |
136 | RRE_CGR = 0xb920, |
137 | RRE_CLGR = 0xb921, | |
138 | RRE_DLGR = 0xb987, | |
139 | RRE_DLR = 0xb997, | |
140 | RRE_DSGFR = 0xb91d, | |
141 | RRE_DSGR = 0xb90d, | |
142 | RRE_LGBR = 0xb906, | |
143 | RRE_LCGR = 0xb903, | |
144 | RRE_LGFR = 0xb914, | |
145 | RRE_LGHR = 0xb907, | |
146 | RRE_LGR = 0xb904, | |
147 | RRE_LLGCR = 0xb984, | |
148 | RRE_LLGFR = 0xb916, | |
149 | RRE_LLGHR = 0xb985, | |
150 | RRE_LRVR = 0xb91f, | |
151 | RRE_LRVGR = 0xb90f, | |
152 | RRE_LTGR = 0xb902, | |
36017dc6 | 153 | RRE_MLGR = 0xb986, |
48bb3750 RH |
154 | RRE_MSGR = 0xb90c, |
155 | RRE_MSR = 0xb252, | |
156 | RRE_NGR = 0xb980, | |
157 | RRE_OGR = 0xb981, | |
158 | RRE_SGR = 0xb909, | |
3790b918 RH |
159 | RRE_SLGR = 0xb90b, |
160 | RRE_SLBR = 0xb999, | |
161 | RRE_SLBGR = 0xb989, | |
48bb3750 RH |
162 | RRE_XGR = 0xb982, |
163 | ||
96a9f093 RH |
164 | RRF_LOCR = 0xb9f2, |
165 | RRF_LOCGR = 0xb9e2, | |
166 | ||
48bb3750 | 167 | RR_AR = 0x1a, |
3790b918 | 168 | RR_ALR = 0x1e, |
48bb3750 RH |
169 | RR_BASR = 0x0d, |
170 | RR_BCR = 0x07, | |
171 | RR_CLR = 0x15, | |
172 | RR_CR = 0x19, | |
173 | RR_DR = 0x1d, | |
174 | RR_LCR = 0x13, | |
175 | RR_LR = 0x18, | |
176 | RR_LTR = 0x12, | |
177 | RR_NR = 0x14, | |
178 | RR_OR = 0x16, | |
179 | RR_SR = 0x1b, | |
3790b918 | 180 | RR_SLR = 0x1f, |
48bb3750 RH |
181 | RR_XR = 0x17, |
182 | ||
183 | RSY_RLL = 0xeb1d, | |
184 | RSY_RLLG = 0xeb1c, | |
185 | RSY_SLLG = 0xeb0d, | |
186 | RSY_SRAG = 0xeb0a, | |
187 | RSY_SRLG = 0xeb0c, | |
188 | ||
189 | RS_SLL = 0x89, | |
190 | RS_SRA = 0x8a, | |
191 | RS_SRL = 0x88, | |
192 | ||
193 | RXY_AG = 0xe308, | |
194 | RXY_AY = 0xe35a, | |
195 | RXY_CG = 0xe320, | |
196 | RXY_CY = 0xe359, | |
0db921e6 | 197 | RXY_LAY = 0xe371, |
48bb3750 RH |
198 | RXY_LB = 0xe376, |
199 | RXY_LG = 0xe304, | |
200 | RXY_LGB = 0xe377, | |
201 | RXY_LGF = 0xe314, | |
202 | RXY_LGH = 0xe315, | |
203 | RXY_LHY = 0xe378, | |
204 | RXY_LLGC = 0xe390, | |
205 | RXY_LLGF = 0xe316, | |
206 | RXY_LLGH = 0xe391, | |
207 | RXY_LMG = 0xeb04, | |
208 | RXY_LRV = 0xe31e, | |
209 | RXY_LRVG = 0xe30f, | |
210 | RXY_LRVH = 0xe31f, | |
211 | RXY_LY = 0xe358, | |
212 | RXY_STCY = 0xe372, | |
213 | RXY_STG = 0xe324, | |
214 | RXY_STHY = 0xe370, | |
215 | RXY_STMG = 0xeb24, | |
216 | RXY_STRV = 0xe33e, | |
217 | RXY_STRVG = 0xe32f, | |
218 | RXY_STRVH = 0xe33f, | |
219 | RXY_STY = 0xe350, | |
220 | ||
221 | RX_A = 0x5a, | |
222 | RX_C = 0x59, | |
223 | RX_L = 0x58, | |
0db921e6 | 224 | RX_LA = 0x41, |
48bb3750 RH |
225 | RX_LH = 0x48, |
226 | RX_ST = 0x50, | |
227 | RX_STC = 0x42, | |
228 | RX_STH = 0x40, | |
229 | } S390Opcode; | |
230 | ||
231 | #define LD_SIGNED 0x04 | |
232 | #define LD_UINT8 0x00 | |
233 | #define LD_INT8 (LD_UINT8 | LD_SIGNED) | |
234 | #define LD_UINT16 0x01 | |
235 | #define LD_INT16 (LD_UINT16 | LD_SIGNED) | |
236 | #define LD_UINT32 0x02 | |
237 | #define LD_INT32 (LD_UINT32 | LD_SIGNED) | |
238 | #define LD_UINT64 0x03 | |
239 | #define LD_INT64 (LD_UINT64 | LD_SIGNED) | |
240 | ||
241 | #ifndef NDEBUG | |
242 | static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { | |
243 | "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", | |
244 | "%r8", "%r9", "%r10" "%r11" "%r12" "%r13" "%r14" "%r15" | |
245 | }; | |
246 | #endif | |
247 | ||
248 | /* Since R6 is a potential argument register, choose it last of the | |
249 | call-saved registers. Likewise prefer the call-clobbered registers | |
250 | in reverse order to maximize the chance of avoiding the arguments. */ | |
2827822e | 251 | static const int tcg_target_reg_alloc_order[] = { |
48bb3750 RH |
252 | TCG_REG_R13, |
253 | TCG_REG_R12, | |
254 | TCG_REG_R11, | |
255 | TCG_REG_R10, | |
256 | TCG_REG_R9, | |
257 | TCG_REG_R8, | |
258 | TCG_REG_R7, | |
259 | TCG_REG_R6, | |
260 | TCG_REG_R14, | |
261 | TCG_REG_R0, | |
262 | TCG_REG_R1, | |
263 | TCG_REG_R5, | |
264 | TCG_REG_R4, | |
265 | TCG_REG_R3, | |
266 | TCG_REG_R2, | |
2827822e AG |
267 | }; |
268 | ||
269 | static const int tcg_target_call_iarg_regs[] = { | |
48bb3750 RH |
270 | TCG_REG_R2, |
271 | TCG_REG_R3, | |
272 | TCG_REG_R4, | |
273 | TCG_REG_R5, | |
274 | TCG_REG_R6, | |
2827822e AG |
275 | }; |
276 | ||
277 | static const int tcg_target_call_oarg_regs[] = { | |
48bb3750 | 278 | TCG_REG_R2, |
48bb3750 RH |
279 | }; |
280 | ||
281 | #define S390_CC_EQ 8 | |
282 | #define S390_CC_LT 4 | |
283 | #define S390_CC_GT 2 | |
284 | #define S390_CC_OV 1 | |
285 | #define S390_CC_NE (S390_CC_LT | S390_CC_GT) | |
286 | #define S390_CC_LE (S390_CC_LT | S390_CC_EQ) | |
287 | #define S390_CC_GE (S390_CC_GT | S390_CC_EQ) | |
288 | #define S390_CC_NEVER 0 | |
289 | #define S390_CC_ALWAYS 15 | |
290 | ||
291 | /* Condition codes that result from a COMPARE and COMPARE LOGICAL. */ | |
0aed257f | 292 | static const uint8_t tcg_cond_to_s390_cond[] = { |
48bb3750 RH |
293 | [TCG_COND_EQ] = S390_CC_EQ, |
294 | [TCG_COND_NE] = S390_CC_NE, | |
295 | [TCG_COND_LT] = S390_CC_LT, | |
296 | [TCG_COND_LE] = S390_CC_LE, | |
297 | [TCG_COND_GT] = S390_CC_GT, | |
298 | [TCG_COND_GE] = S390_CC_GE, | |
299 | [TCG_COND_LTU] = S390_CC_LT, | |
300 | [TCG_COND_LEU] = S390_CC_LE, | |
301 | [TCG_COND_GTU] = S390_CC_GT, | |
302 | [TCG_COND_GEU] = S390_CC_GE, | |
303 | }; | |
304 | ||
305 | /* Condition codes that result from a LOAD AND TEST. Here, we have no | |
306 | unsigned instruction variation, however since the test is vs zero we | |
307 | can re-map the outcomes appropriately. */ | |
0aed257f | 308 | static const uint8_t tcg_cond_to_ltr_cond[] = { |
48bb3750 RH |
309 | [TCG_COND_EQ] = S390_CC_EQ, |
310 | [TCG_COND_NE] = S390_CC_NE, | |
311 | [TCG_COND_LT] = S390_CC_LT, | |
312 | [TCG_COND_LE] = S390_CC_LE, | |
313 | [TCG_COND_GT] = S390_CC_GT, | |
314 | [TCG_COND_GE] = S390_CC_GE, | |
315 | [TCG_COND_LTU] = S390_CC_NEVER, | |
316 | [TCG_COND_LEU] = S390_CC_EQ, | |
317 | [TCG_COND_GTU] = S390_CC_NE, | |
318 | [TCG_COND_GEU] = S390_CC_ALWAYS, | |
319 | }; | |
320 | ||
321 | #ifdef CONFIG_SOFTMMU | |
e141ab52 BS |
322 | /* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr, |
323 | int mmu_idx) */ | |
324 | static const void * const qemu_ld_helpers[4] = { | |
325 | helper_ldb_mmu, | |
326 | helper_ldw_mmu, | |
327 | helper_ldl_mmu, | |
328 | helper_ldq_mmu, | |
329 | }; | |
330 | ||
331 | /* helper signature: helper_st_mmu(CPUState *env, target_ulong addr, | |
332 | uintxx_t val, int mmu_idx) */ | |
333 | static const void * const qemu_st_helpers[4] = { | |
334 | helper_stb_mmu, | |
335 | helper_stw_mmu, | |
336 | helper_stl_mmu, | |
337 | helper_stq_mmu, | |
338 | }; | |
e141ab52 | 339 | #endif |
48bb3750 RH |
340 | |
341 | static uint8_t *tb_ret_addr; | |
342 | ||
343 | /* A list of relevant facilities used by this translator. Some of these | |
344 | are required for proper operation, and these are checked at startup. */ | |
345 | ||
346 | #define FACILITY_ZARCH_ACTIVE (1ULL << (63 - 2)) | |
347 | #define FACILITY_LONG_DISP (1ULL << (63 - 18)) | |
348 | #define FACILITY_EXT_IMM (1ULL << (63 - 21)) | |
349 | #define FACILITY_GEN_INST_EXT (1ULL << (63 - 34)) | |
96a9f093 | 350 | #define FACILITY_LOAD_ON_COND (1ULL << (63 - 45)) |
48bb3750 RH |
351 | |
352 | static uint64_t facilities; | |
2827822e AG |
353 | |
354 | static void patch_reloc(uint8_t *code_ptr, int type, | |
2ba7fae2 | 355 | intptr_t value, intptr_t addend) |
2827822e | 356 | { |
2ba7fae2 RH |
357 | intptr_t code_ptr_tl = (intptr_t)code_ptr; |
358 | intptr_t pcrel2; | |
48bb3750 RH |
359 | |
360 | /* ??? Not the usual definition of "addend". */ | |
361 | pcrel2 = (value - (code_ptr_tl + addend)) >> 1; | |
362 | ||
363 | switch (type) { | |
364 | case R_390_PC16DBL: | |
365 | assert(pcrel2 == (int16_t)pcrel2); | |
366 | *(int16_t *)code_ptr = pcrel2; | |
367 | break; | |
368 | case R_390_PC32DBL: | |
369 | assert(pcrel2 == (int32_t)pcrel2); | |
370 | *(int32_t *)code_ptr = pcrel2; | |
371 | break; | |
372 | default: | |
373 | tcg_abort(); | |
374 | break; | |
375 | } | |
2827822e AG |
376 | } |
377 | ||
2827822e AG |
378 | /* parse target specific constraints */ |
379 | static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) | |
380 | { | |
48bb3750 RH |
381 | const char *ct_str = *pct_str; |
382 | ||
383 | switch (ct_str[0]) { | |
384 | case 'r': /* all registers */ | |
385 | ct->ct |= TCG_CT_REG; | |
386 | tcg_regset_set32(ct->u.regs, 0, 0xffff); | |
387 | break; | |
388 | case 'R': /* not R0 */ | |
389 | ct->ct |= TCG_CT_REG; | |
390 | tcg_regset_set32(ct->u.regs, 0, 0xffff); | |
391 | tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); | |
392 | break; | |
393 | case 'L': /* qemu_ld/st constraint */ | |
394 | ct->ct |= TCG_CT_REG; | |
395 | tcg_regset_set32(ct->u.regs, 0, 0xffff); | |
396 | tcg_regset_reset_reg (ct->u.regs, TCG_REG_R2); | |
397 | tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3); | |
65a62a75 | 398 | tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4); |
48bb3750 RH |
399 | break; |
400 | case 'a': /* force R2 for division */ | |
401 | ct->ct |= TCG_CT_REG; | |
402 | tcg_regset_clear(ct->u.regs); | |
403 | tcg_regset_set_reg(ct->u.regs, TCG_REG_R2); | |
404 | break; | |
405 | case 'b': /* force R3 for division */ | |
406 | ct->ct |= TCG_CT_REG; | |
407 | tcg_regset_clear(ct->u.regs); | |
408 | tcg_regset_set_reg(ct->u.regs, TCG_REG_R3); | |
409 | break; | |
48bb3750 RH |
410 | case 'W': /* force 32-bit ("word") immediate */ |
411 | ct->ct |= TCG_CT_CONST_32; | |
412 | break; | |
48bb3750 RH |
413 | case 'K': |
414 | ct->ct |= TCG_CT_CONST_MULI; | |
415 | break; | |
48bb3750 RH |
416 | case 'O': |
417 | ct->ct |= TCG_CT_CONST_ORI; | |
418 | break; | |
419 | case 'X': | |
420 | ct->ct |= TCG_CT_CONST_XORI; | |
421 | break; | |
422 | case 'C': | |
423 | ct->ct |= TCG_CT_CONST_CMPI; | |
424 | break; | |
425 | default: | |
426 | return -1; | |
427 | } | |
428 | ct_str++; | |
429 | *pct_str = ct_str; | |
430 | ||
2827822e AG |
431 | return 0; |
432 | } | |
433 | ||
48bb3750 RH |
434 | /* Immediates to be used with logical OR. This is an optimization only, |
435 | since a full 64-bit immediate OR can always be performed with 4 sequential | |
436 | OI[LH][LH] instructions. What we're looking for is immediates that we | |
437 | can load efficiently, and the immediate load plus the reg-reg OR is | |
438 | smaller than the sequential OI's. */ | |
439 | ||
440 | static int tcg_match_ori(int ct, tcg_target_long val) | |
441 | { | |
442 | if (facilities & FACILITY_EXT_IMM) { | |
443 | if (ct & TCG_CT_CONST_32) { | |
444 | /* All 32-bit ORs can be performed with 1 48-bit insn. */ | |
445 | return 1; | |
446 | } | |
447 | } | |
448 | ||
449 | /* Look for negative values. These are best to load with LGHI. */ | |
450 | if (val < 0) { | |
451 | if (val == (int16_t)val) { | |
452 | return 0; | |
453 | } | |
454 | if (facilities & FACILITY_EXT_IMM) { | |
455 | if (val == (int32_t)val) { | |
456 | return 0; | |
457 | } | |
458 | } | |
459 | } | |
460 | ||
461 | return 1; | |
462 | } | |
463 | ||
464 | /* Immediates to be used with logical XOR. This is almost, but not quite, | |
465 | only an optimization. XOR with immediate is only supported with the | |
466 | extended-immediate facility. That said, there are a few patterns for | |
467 | which it is better to load the value into a register first. */ | |
468 | ||
469 | static int tcg_match_xori(int ct, tcg_target_long val) | |
470 | { | |
471 | if ((facilities & FACILITY_EXT_IMM) == 0) { | |
472 | return 0; | |
473 | } | |
474 | ||
475 | if (ct & TCG_CT_CONST_32) { | |
476 | /* All 32-bit XORs can be performed with 1 48-bit insn. */ | |
477 | return 1; | |
478 | } | |
479 | ||
480 | /* Look for negative values. These are best to load with LGHI. */ | |
481 | if (val < 0 && val == (int32_t)val) { | |
482 | return 0; | |
483 | } | |
484 | ||
485 | return 1; | |
486 | } | |
487 | ||
488 | /* Imediates to be used with comparisons. */ | |
489 | ||
490 | static int tcg_match_cmpi(int ct, tcg_target_long val) | |
491 | { | |
492 | if (facilities & FACILITY_EXT_IMM) { | |
493 | /* The COMPARE IMMEDIATE instruction is available. */ | |
494 | if (ct & TCG_CT_CONST_32) { | |
495 | /* We have a 32-bit immediate and can compare against anything. */ | |
496 | return 1; | |
497 | } else { | |
498 | /* ??? We have no insight here into whether the comparison is | |
499 | signed or unsigned. The COMPARE IMMEDIATE insn uses a 32-bit | |
500 | signed immediate, and the COMPARE LOGICAL IMMEDIATE insn uses | |
501 | a 32-bit unsigned immediate. If we were to use the (semi) | |
502 | obvious "val == (int32_t)val" we would be enabling unsigned | |
503 | comparisons vs very large numbers. The only solution is to | |
504 | take the intersection of the ranges. */ | |
505 | /* ??? Another possible solution is to simply lie and allow all | |
506 | constants here and force the out-of-range values into a temp | |
507 | register in tgen_cmp when we have knowledge of the actual | |
508 | comparison code in use. */ | |
509 | return val >= 0 && val <= 0x7fffffff; | |
510 | } | |
511 | } else { | |
512 | /* Only the LOAD AND TEST instruction is available. */ | |
513 | return val == 0; | |
514 | } | |
515 | } | |
516 | ||
2827822e | 517 | /* Test if a constant matches the constraint. */ |
f6c6afc1 | 518 | static int tcg_target_const_match(tcg_target_long val, TCGType type, |
48bb3750 | 519 | const TCGArgConstraint *arg_ct) |
2827822e | 520 | { |
48bb3750 RH |
521 | int ct = arg_ct->ct; |
522 | ||
523 | if (ct & TCG_CT_CONST) { | |
524 | return 1; | |
525 | } | |
526 | ||
527 | /* Handle the modifiers. */ | |
48bb3750 RH |
528 | if (ct & TCG_CT_CONST_32) { |
529 | val = (int32_t)val; | |
530 | } | |
531 | ||
532 | /* The following are mutually exclusive. */ | |
0db921e6 | 533 | if (ct & TCG_CT_CONST_MULI) { |
48bb3750 RH |
534 | /* Immediates that may be used with multiply. If we have the |
535 | general-instruction-extensions, then we have MULTIPLY SINGLE | |
536 | IMMEDIATE with a signed 32-bit, otherwise we have only | |
537 | MULTIPLY HALFWORD IMMEDIATE, with a signed 16-bit. */ | |
538 | if (facilities & FACILITY_GEN_INST_EXT) { | |
539 | return val == (int32_t)val; | |
540 | } else { | |
541 | return val == (int16_t)val; | |
542 | } | |
48bb3750 RH |
543 | } else if (ct & TCG_CT_CONST_ORI) { |
544 | return tcg_match_ori(ct, val); | |
545 | } else if (ct & TCG_CT_CONST_XORI) { | |
546 | return tcg_match_xori(ct, val); | |
547 | } else if (ct & TCG_CT_CONST_CMPI) { | |
548 | return tcg_match_cmpi(ct, val); | |
549 | } | |
550 | ||
2827822e AG |
551 | return 0; |
552 | } | |
553 | ||
48bb3750 RH |
554 | /* Emit instructions according to the given instruction format. */ |
555 | ||
556 | static void tcg_out_insn_RR(TCGContext *s, S390Opcode op, TCGReg r1, TCGReg r2) | |
557 | { | |
558 | tcg_out16(s, (op << 8) | (r1 << 4) | r2); | |
559 | } | |
560 | ||
561 | static void tcg_out_insn_RRE(TCGContext *s, S390Opcode op, | |
562 | TCGReg r1, TCGReg r2) | |
563 | { | |
564 | tcg_out32(s, (op << 16) | (r1 << 4) | r2); | |
565 | } | |
566 | ||
96a9f093 RH |
567 | static void tcg_out_insn_RRF(TCGContext *s, S390Opcode op, |
568 | TCGReg r1, TCGReg r2, int m3) | |
569 | { | |
570 | tcg_out32(s, (op << 16) | (m3 << 12) | (r1 << 4) | r2); | |
571 | } | |
572 | ||
48bb3750 RH |
573 | static void tcg_out_insn_RI(TCGContext *s, S390Opcode op, TCGReg r1, int i2) |
574 | { | |
575 | tcg_out32(s, (op << 16) | (r1 << 20) | (i2 & 0xffff)); | |
576 | } | |
577 | ||
578 | static void tcg_out_insn_RIL(TCGContext *s, S390Opcode op, TCGReg r1, int i2) | |
579 | { | |
580 | tcg_out16(s, op | (r1 << 4)); | |
581 | tcg_out32(s, i2); | |
582 | } | |
583 | ||
584 | static void tcg_out_insn_RS(TCGContext *s, S390Opcode op, TCGReg r1, | |
585 | TCGReg b2, TCGReg r3, int disp) | |
586 | { | |
587 | tcg_out32(s, (op << 24) | (r1 << 20) | (r3 << 16) | (b2 << 12) | |
588 | | (disp & 0xfff)); | |
589 | } | |
590 | ||
591 | static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1, | |
592 | TCGReg b2, TCGReg r3, int disp) | |
593 | { | |
594 | tcg_out16(s, (op & 0xff00) | (r1 << 4) | r3); | |
595 | tcg_out32(s, (op & 0xff) | (b2 << 28) | |
596 | | ((disp & 0xfff) << 16) | ((disp & 0xff000) >> 4)); | |
597 | } | |
598 | ||
599 | #define tcg_out_insn_RX tcg_out_insn_RS | |
600 | #define tcg_out_insn_RXY tcg_out_insn_RSY | |
601 | ||
602 | /* Emit an opcode with "type-checking" of the format. */ | |
603 | #define tcg_out_insn(S, FMT, OP, ...) \ | |
604 | glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__) | |
605 | ||
606 | ||
607 | /* emit 64-bit shifts */ | |
608 | static void tcg_out_sh64(TCGContext* s, S390Opcode op, TCGReg dest, | |
609 | TCGReg src, TCGReg sh_reg, int sh_imm) | |
610 | { | |
611 | tcg_out_insn_RSY(s, op, dest, sh_reg, src, sh_imm); | |
612 | } | |
613 | ||
614 | /* emit 32-bit shifts */ | |
615 | static void tcg_out_sh32(TCGContext* s, S390Opcode op, TCGReg dest, | |
616 | TCGReg sh_reg, int sh_imm) | |
617 | { | |
618 | tcg_out_insn_RS(s, op, dest, sh_reg, 0, sh_imm); | |
619 | } | |
620 | ||
621 | static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) | |
622 | { | |
623 | if (src != dst) { | |
624 | if (type == TCG_TYPE_I32) { | |
625 | tcg_out_insn(s, RR, LR, dst, src); | |
626 | } else { | |
627 | tcg_out_insn(s, RRE, LGR, dst, src); | |
628 | } | |
629 | } | |
630 | } | |
631 | ||
2827822e | 632 | /* load a register with an immediate value */ |
48bb3750 RH |
633 | static void tcg_out_movi(TCGContext *s, TCGType type, |
634 | TCGReg ret, tcg_target_long sval) | |
2827822e | 635 | { |
48bb3750 RH |
636 | static const S390Opcode lli_insns[4] = { |
637 | RI_LLILL, RI_LLILH, RI_LLIHL, RI_LLIHH | |
638 | }; | |
639 | ||
640 | tcg_target_ulong uval = sval; | |
641 | int i; | |
642 | ||
643 | if (type == TCG_TYPE_I32) { | |
644 | uval = (uint32_t)sval; | |
645 | sval = (int32_t)sval; | |
646 | } | |
647 | ||
648 | /* Try all 32-bit insns that can load it in one go. */ | |
649 | if (sval >= -0x8000 && sval < 0x8000) { | |
650 | tcg_out_insn(s, RI, LGHI, ret, sval); | |
651 | return; | |
652 | } | |
653 | ||
654 | for (i = 0; i < 4; i++) { | |
655 | tcg_target_long mask = 0xffffull << i*16; | |
656 | if ((uval & mask) == uval) { | |
657 | tcg_out_insn_RI(s, lli_insns[i], ret, uval >> i*16); | |
658 | return; | |
659 | } | |
660 | } | |
661 | ||
662 | /* Try all 48-bit insns that can load it in one go. */ | |
663 | if (facilities & FACILITY_EXT_IMM) { | |
664 | if (sval == (int32_t)sval) { | |
665 | tcg_out_insn(s, RIL, LGFI, ret, sval); | |
666 | return; | |
667 | } | |
668 | if (uval <= 0xffffffff) { | |
669 | tcg_out_insn(s, RIL, LLILF, ret, uval); | |
670 | return; | |
671 | } | |
672 | if ((uval & 0xffffffff) == 0) { | |
673 | tcg_out_insn(s, RIL, LLIHF, ret, uval >> 31 >> 1); | |
674 | return; | |
675 | } | |
676 | } | |
677 | ||
678 | /* Try for PC-relative address load. */ | |
679 | if ((sval & 1) == 0) { | |
680 | intptr_t off = (sval - (intptr_t)s->code_ptr) >> 1; | |
681 | if (off == (int32_t)off) { | |
682 | tcg_out_insn(s, RIL, LARL, ret, off); | |
683 | return; | |
684 | } | |
685 | } | |
686 | ||
687 | /* If extended immediates are not present, then we may have to issue | |
688 | several instructions to load the low 32 bits. */ | |
689 | if (!(facilities & FACILITY_EXT_IMM)) { | |
690 | /* A 32-bit unsigned value can be loaded in 2 insns. And given | |
691 | that the lli_insns loop above did not succeed, we know that | |
692 | both insns are required. */ | |
693 | if (uval <= 0xffffffff) { | |
694 | tcg_out_insn(s, RI, LLILL, ret, uval); | |
695 | tcg_out_insn(s, RI, IILH, ret, uval >> 16); | |
696 | return; | |
697 | } | |
698 | ||
699 | /* If all high bits are set, the value can be loaded in 2 or 3 insns. | |
700 | We first want to make sure that all the high bits get set. With | |
701 | luck the low 16-bits can be considered negative to perform that for | |
702 | free, otherwise we load an explicit -1. */ | |
703 | if (sval >> 31 >> 1 == -1) { | |
704 | if (uval & 0x8000) { | |
705 | tcg_out_insn(s, RI, LGHI, ret, uval); | |
706 | } else { | |
707 | tcg_out_insn(s, RI, LGHI, ret, -1); | |
708 | tcg_out_insn(s, RI, IILL, ret, uval); | |
709 | } | |
710 | tcg_out_insn(s, RI, IILH, ret, uval >> 16); | |
711 | return; | |
712 | } | |
713 | } | |
714 | ||
715 | /* If we get here, both the high and low parts have non-zero bits. */ | |
716 | ||
717 | /* Recurse to load the lower 32-bits. */ | |
a22971f9 | 718 | tcg_out_movi(s, TCG_TYPE_I64, ret, uval & 0xffffffff); |
48bb3750 RH |
719 | |
720 | /* Insert data into the high 32-bits. */ | |
721 | uval = uval >> 31 >> 1; | |
722 | if (facilities & FACILITY_EXT_IMM) { | |
723 | if (uval < 0x10000) { | |
724 | tcg_out_insn(s, RI, IIHL, ret, uval); | |
725 | } else if ((uval & 0xffff) == 0) { | |
726 | tcg_out_insn(s, RI, IIHH, ret, uval >> 16); | |
727 | } else { | |
728 | tcg_out_insn(s, RIL, IIHF, ret, uval); | |
729 | } | |
730 | } else { | |
731 | if (uval & 0xffff) { | |
732 | tcg_out_insn(s, RI, IIHL, ret, uval); | |
733 | } | |
734 | if (uval & 0xffff0000) { | |
735 | tcg_out_insn(s, RI, IIHH, ret, uval >> 16); | |
736 | } | |
737 | } | |
738 | } | |
739 | ||
740 | ||
741 | /* Emit a load/store type instruction. Inputs are: | |
742 | DATA: The register to be loaded or stored. | |
743 | BASE+OFS: The effective address. | |
744 | OPC_RX: If the operation has an RX format opcode (e.g. STC), otherwise 0. | |
745 | OPC_RXY: The RXY format opcode for the operation (e.g. STCY). */ | |
746 | ||
747 | static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy, | |
748 | TCGReg data, TCGReg base, TCGReg index, | |
749 | tcg_target_long ofs) | |
750 | { | |
751 | if (ofs < -0x80000 || ofs >= 0x80000) { | |
78c9f7c5 RH |
752 | /* Combine the low 20 bits of the offset with the actual load insn; |
753 | the high 44 bits must come from an immediate load. */ | |
754 | tcg_target_long low = ((ofs & 0xfffff) ^ 0x80000) - 0x80000; | |
755 | tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs - low); | |
756 | ofs = low; | |
48bb3750 RH |
757 | |
758 | /* If we were already given an index register, add it in. */ | |
759 | if (index != TCG_REG_NONE) { | |
760 | tcg_out_insn(s, RRE, AGR, TCG_TMP0, index); | |
761 | } | |
762 | index = TCG_TMP0; | |
763 | } | |
764 | ||
765 | if (opc_rx && ofs >= 0 && ofs < 0x1000) { | |
766 | tcg_out_insn_RX(s, opc_rx, data, base, index, ofs); | |
767 | } else { | |
768 | tcg_out_insn_RXY(s, opc_rxy, data, base, index, ofs); | |
769 | } | |
2827822e AG |
770 | } |
771 | ||
48bb3750 | 772 | |
2827822e | 773 | /* load data without address translation or endianness conversion */ |
48bb3750 | 774 | static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data, |
a05b5b9b | 775 | TCGReg base, intptr_t ofs) |
2827822e | 776 | { |
48bb3750 RH |
777 | if (type == TCG_TYPE_I32) { |
778 | tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs); | |
779 | } else { | |
780 | tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs); | |
781 | } | |
2827822e AG |
782 | } |
783 | ||
48bb3750 | 784 | static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data, |
a05b5b9b | 785 | TCGReg base, intptr_t ofs) |
2827822e | 786 | { |
48bb3750 RH |
787 | if (type == TCG_TYPE_I32) { |
788 | tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs); | |
789 | } else { | |
790 | tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs); | |
791 | } | |
792 | } | |
793 | ||
794 | /* load data from an absolute host address */ | |
795 | static void tcg_out_ld_abs(TCGContext *s, TCGType type, TCGReg dest, void *abs) | |
796 | { | |
797 | tcg_target_long addr = (tcg_target_long)abs; | |
798 | ||
799 | if (facilities & FACILITY_GEN_INST_EXT) { | |
800 | tcg_target_long disp = (addr - (tcg_target_long)s->code_ptr) >> 1; | |
801 | if (disp == (int32_t)disp) { | |
802 | if (type == TCG_TYPE_I32) { | |
803 | tcg_out_insn(s, RIL, LRL, dest, disp); | |
804 | } else { | |
805 | tcg_out_insn(s, RIL, LGRL, dest, disp); | |
806 | } | |
807 | return; | |
808 | } | |
809 | } | |
810 | ||
811 | tcg_out_movi(s, TCG_TYPE_PTR, dest, addr & ~0xffff); | |
812 | tcg_out_ld(s, type, dest, dest, addr & 0xffff); | |
813 | } | |
814 | ||
f0bffc27 RH |
815 | static inline void tcg_out_risbg(TCGContext *s, TCGReg dest, TCGReg src, |
816 | int msb, int lsb, int ofs, int z) | |
817 | { | |
818 | /* Format RIE-f */ | |
819 | tcg_out16(s, (RIE_RISBG & 0xff00) | (dest << 4) | src); | |
820 | tcg_out16(s, (msb << 8) | (z << 7) | lsb); | |
821 | tcg_out16(s, (ofs << 8) | (RIE_RISBG & 0xff)); | |
822 | } | |
823 | ||
48bb3750 RH |
824 | static void tgen_ext8s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) |
825 | { | |
826 | if (facilities & FACILITY_EXT_IMM) { | |
827 | tcg_out_insn(s, RRE, LGBR, dest, src); | |
828 | return; | |
829 | } | |
830 | ||
831 | if (type == TCG_TYPE_I32) { | |
832 | if (dest == src) { | |
833 | tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 24); | |
834 | } else { | |
835 | tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 24); | |
836 | } | |
837 | tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 24); | |
838 | } else { | |
839 | tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 56); | |
840 | tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 56); | |
841 | } | |
842 | } | |
843 | ||
844 | static void tgen_ext8u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) | |
845 | { | |
846 | if (facilities & FACILITY_EXT_IMM) { | |
847 | tcg_out_insn(s, RRE, LLGCR, dest, src); | |
848 | return; | |
849 | } | |
850 | ||
851 | if (dest == src) { | |
852 | tcg_out_movi(s, type, TCG_TMP0, 0xff); | |
853 | src = TCG_TMP0; | |
854 | } else { | |
855 | tcg_out_movi(s, type, dest, 0xff); | |
856 | } | |
857 | if (type == TCG_TYPE_I32) { | |
858 | tcg_out_insn(s, RR, NR, dest, src); | |
859 | } else { | |
860 | tcg_out_insn(s, RRE, NGR, dest, src); | |
861 | } | |
862 | } | |
863 | ||
864 | static void tgen_ext16s(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) | |
865 | { | |
866 | if (facilities & FACILITY_EXT_IMM) { | |
867 | tcg_out_insn(s, RRE, LGHR, dest, src); | |
868 | return; | |
869 | } | |
870 | ||
871 | if (type == TCG_TYPE_I32) { | |
872 | if (dest == src) { | |
873 | tcg_out_sh32(s, RS_SLL, dest, TCG_REG_NONE, 16); | |
874 | } else { | |
875 | tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 16); | |
876 | } | |
877 | tcg_out_sh32(s, RS_SRA, dest, TCG_REG_NONE, 16); | |
878 | } else { | |
879 | tcg_out_sh64(s, RSY_SLLG, dest, src, TCG_REG_NONE, 48); | |
880 | tcg_out_sh64(s, RSY_SRAG, dest, dest, TCG_REG_NONE, 48); | |
881 | } | |
882 | } | |
883 | ||
884 | static void tgen_ext16u(TCGContext *s, TCGType type, TCGReg dest, TCGReg src) | |
885 | { | |
886 | if (facilities & FACILITY_EXT_IMM) { | |
887 | tcg_out_insn(s, RRE, LLGHR, dest, src); | |
888 | return; | |
889 | } | |
890 | ||
891 | if (dest == src) { | |
892 | tcg_out_movi(s, type, TCG_TMP0, 0xffff); | |
893 | src = TCG_TMP0; | |
894 | } else { | |
895 | tcg_out_movi(s, type, dest, 0xffff); | |
896 | } | |
897 | if (type == TCG_TYPE_I32) { | |
898 | tcg_out_insn(s, RR, NR, dest, src); | |
899 | } else { | |
900 | tcg_out_insn(s, RRE, NGR, dest, src); | |
901 | } | |
902 | } | |
903 | ||
904 | static inline void tgen_ext32s(TCGContext *s, TCGReg dest, TCGReg src) | |
905 | { | |
906 | tcg_out_insn(s, RRE, LGFR, dest, src); | |
907 | } | |
908 | ||
909 | static inline void tgen_ext32u(TCGContext *s, TCGReg dest, TCGReg src) | |
910 | { | |
911 | tcg_out_insn(s, RRE, LLGFR, dest, src); | |
912 | } | |
913 | ||
f0bffc27 RH |
914 | /* Accept bit patterns like these: |
915 | 0....01....1 | |
916 | 1....10....0 | |
917 | 1..10..01..1 | |
918 | 0..01..10..0 | |
919 | Copied from gcc sources. */ | |
920 | static inline bool risbg_mask(uint64_t c) | |
921 | { | |
922 | uint64_t lsb; | |
923 | /* We don't change the number of transitions by inverting, | |
924 | so make sure we start with the LSB zero. */ | |
925 | if (c & 1) { | |
926 | c = ~c; | |
927 | } | |
928 | /* Reject all zeros or all ones. */ | |
929 | if (c == 0) { | |
930 | return false; | |
931 | } | |
932 | /* Find the first transition. */ | |
933 | lsb = c & -c; | |
934 | /* Invert to look for a second transition. */ | |
935 | c = ~c; | |
936 | /* Erase the first transition. */ | |
937 | c &= -lsb; | |
938 | /* Find the second transition, if any. */ | |
939 | lsb = c & -c; | |
940 | /* Match if all the bits are 1's, or if c is zero. */ | |
941 | return c == -lsb; | |
942 | } | |
943 | ||
07ff7983 | 944 | static void tgen_andi(TCGContext *s, TCGType type, TCGReg dest, uint64_t val) |
48bb3750 RH |
945 | { |
946 | static const S390Opcode ni_insns[4] = { | |
947 | RI_NILL, RI_NILH, RI_NIHL, RI_NIHH | |
948 | }; | |
949 | static const S390Opcode nif_insns[2] = { | |
950 | RIL_NILF, RIL_NIHF | |
951 | }; | |
07ff7983 | 952 | uint64_t valid = (type == TCG_TYPE_I32 ? 0xffffffffull : -1ull); |
48bb3750 RH |
953 | int i; |
954 | ||
48bb3750 | 955 | /* Look for the zero-extensions. */ |
07ff7983 | 956 | if ((val & valid) == 0xffffffff) { |
48bb3750 RH |
957 | tgen_ext32u(s, dest, dest); |
958 | return; | |
959 | } | |
48bb3750 | 960 | if (facilities & FACILITY_EXT_IMM) { |
07ff7983 | 961 | if ((val & valid) == 0xff) { |
48bb3750 RH |
962 | tgen_ext8u(s, TCG_TYPE_I64, dest, dest); |
963 | return; | |
964 | } | |
07ff7983 | 965 | if ((val & valid) == 0xffff) { |
48bb3750 RH |
966 | tgen_ext16u(s, TCG_TYPE_I64, dest, dest); |
967 | return; | |
968 | } | |
07ff7983 | 969 | } |
48bb3750 | 970 | |
07ff7983 RH |
971 | /* Try all 32-bit insns that can perform it in one go. */ |
972 | for (i = 0; i < 4; i++) { | |
973 | tcg_target_ulong mask = ~(0xffffull << i*16); | |
974 | if (((val | ~valid) & mask) == mask) { | |
975 | tcg_out_insn_RI(s, ni_insns[i], dest, val >> i*16); | |
976 | return; | |
48bb3750 | 977 | } |
07ff7983 | 978 | } |
48bb3750 | 979 | |
07ff7983 RH |
980 | /* Try all 48-bit insns that can perform it in one go. */ |
981 | if (facilities & FACILITY_EXT_IMM) { | |
982 | for (i = 0; i < 2; i++) { | |
983 | tcg_target_ulong mask = ~(0xffffffffull << i*32); | |
984 | if (((val | ~valid) & mask) == mask) { | |
985 | tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32); | |
986 | return; | |
48bb3750 RH |
987 | } |
988 | } | |
07ff7983 | 989 | } |
f0bffc27 RH |
990 | if ((facilities & FACILITY_GEN_INST_EXT) && risbg_mask(val)) { |
991 | int msb, lsb; | |
992 | if ((val & 0x8000000000000001ull) == 0x8000000000000001ull) { | |
993 | /* Achieve wraparound by swapping msb and lsb. */ | |
994 | msb = 63 - ctz64(~val); | |
995 | lsb = clz64(~val) + 1; | |
996 | } else { | |
997 | msb = clz64(val); | |
998 | lsb = 63 - ctz64(val); | |
999 | } | |
1000 | tcg_out_risbg(s, dest, dest, msb, lsb, 0, 1); | |
1001 | return; | |
1002 | } | |
48bb3750 | 1003 | |
07ff7983 RH |
1004 | /* Fall back to loading the constant. */ |
1005 | tcg_out_movi(s, type, TCG_TMP0, val); | |
1006 | if (type == TCG_TYPE_I32) { | |
1007 | tcg_out_insn(s, RR, NR, dest, TCG_TMP0); | |
48bb3750 | 1008 | } else { |
07ff7983 | 1009 | tcg_out_insn(s, RRE, NGR, dest, TCG_TMP0); |
48bb3750 RH |
1010 | } |
1011 | } | |
1012 | ||
1013 | static void tgen64_ori(TCGContext *s, TCGReg dest, tcg_target_ulong val) | |
1014 | { | |
1015 | static const S390Opcode oi_insns[4] = { | |
1016 | RI_OILL, RI_OILH, RI_OIHL, RI_OIHH | |
1017 | }; | |
1018 | static const S390Opcode nif_insns[2] = { | |
1019 | RIL_OILF, RIL_OIHF | |
1020 | }; | |
1021 | ||
1022 | int i; | |
1023 | ||
1024 | /* Look for no-op. */ | |
1025 | if (val == 0) { | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | if (facilities & FACILITY_EXT_IMM) { | |
1030 | /* Try all 32-bit insns that can perform it in one go. */ | |
1031 | for (i = 0; i < 4; i++) { | |
1032 | tcg_target_ulong mask = (0xffffull << i*16); | |
1033 | if ((val & mask) != 0 && (val & ~mask) == 0) { | |
1034 | tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16); | |
1035 | return; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | /* Try all 48-bit insns that can perform it in one go. */ | |
1040 | for (i = 0; i < 2; i++) { | |
1041 | tcg_target_ulong mask = (0xffffffffull << i*32); | |
1042 | if ((val & mask) != 0 && (val & ~mask) == 0) { | |
1043 | tcg_out_insn_RIL(s, nif_insns[i], dest, val >> i*32); | |
1044 | return; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | /* Perform the OR via sequential modifications to the high and | |
1049 | low parts. Do this via recursion to handle 16-bit vs 32-bit | |
1050 | masks in each half. */ | |
1051 | tgen64_ori(s, dest, val & 0x00000000ffffffffull); | |
1052 | tgen64_ori(s, dest, val & 0xffffffff00000000ull); | |
1053 | } else { | |
1054 | /* With no extended-immediate facility, we don't need to be so | |
1055 | clever. Just iterate over the insns and mask in the constant. */ | |
1056 | for (i = 0; i < 4; i++) { | |
1057 | tcg_target_ulong mask = (0xffffull << i*16); | |
1058 | if ((val & mask) != 0) { | |
1059 | tcg_out_insn_RI(s, oi_insns[i], dest, val >> i*16); | |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | static void tgen64_xori(TCGContext *s, TCGReg dest, tcg_target_ulong val) | |
1066 | { | |
1067 | /* Perform the xor by parts. */ | |
1068 | if (val & 0xffffffff) { | |
1069 | tcg_out_insn(s, RIL, XILF, dest, val); | |
1070 | } | |
1071 | if (val > 0xffffffff) { | |
1072 | tcg_out_insn(s, RIL, XIHF, dest, val >> 31 >> 1); | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1, | |
1077 | TCGArg c2, int c2const) | |
1078 | { | |
bcc66562 | 1079 | bool is_unsigned = is_unsigned_cond(c); |
48bb3750 RH |
1080 | if (c2const) { |
1081 | if (c2 == 0) { | |
1082 | if (type == TCG_TYPE_I32) { | |
1083 | tcg_out_insn(s, RR, LTR, r1, r1); | |
1084 | } else { | |
1085 | tcg_out_insn(s, RRE, LTGR, r1, r1); | |
1086 | } | |
1087 | return tcg_cond_to_ltr_cond[c]; | |
1088 | } else { | |
1089 | if (is_unsigned) { | |
1090 | if (type == TCG_TYPE_I32) { | |
1091 | tcg_out_insn(s, RIL, CLFI, r1, c2); | |
1092 | } else { | |
1093 | tcg_out_insn(s, RIL, CLGFI, r1, c2); | |
1094 | } | |
1095 | } else { | |
1096 | if (type == TCG_TYPE_I32) { | |
1097 | tcg_out_insn(s, RIL, CFI, r1, c2); | |
1098 | } else { | |
1099 | tcg_out_insn(s, RIL, CGFI, r1, c2); | |
1100 | } | |
1101 | } | |
1102 | } | |
1103 | } else { | |
1104 | if (is_unsigned) { | |
1105 | if (type == TCG_TYPE_I32) { | |
1106 | tcg_out_insn(s, RR, CLR, r1, c2); | |
1107 | } else { | |
1108 | tcg_out_insn(s, RRE, CLGR, r1, c2); | |
1109 | } | |
1110 | } else { | |
1111 | if (type == TCG_TYPE_I32) { | |
1112 | tcg_out_insn(s, RR, CR, r1, c2); | |
1113 | } else { | |
1114 | tcg_out_insn(s, RRE, CGR, r1, c2); | |
1115 | } | |
1116 | } | |
1117 | } | |
1118 | return tcg_cond_to_s390_cond[c]; | |
1119 | } | |
1120 | ||
1121 | static void tgen_setcond(TCGContext *s, TCGType type, TCGCond c, | |
96a9f093 | 1122 | TCGReg dest, TCGReg c1, TCGArg c2, int c2const) |
48bb3750 | 1123 | { |
96a9f093 | 1124 | int cc = tgen_cmp(s, type, c, c1, c2, c2const); |
48bb3750 RH |
1125 | |
1126 | /* Emit: r1 = 1; if (cc) goto over; r1 = 0; over: */ | |
1127 | tcg_out_movi(s, type, dest, 1); | |
1128 | tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); | |
1129 | tcg_out_movi(s, type, dest, 0); | |
1130 | } | |
1131 | ||
96a9f093 RH |
1132 | static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest, |
1133 | TCGReg c1, TCGArg c2, int c2const, TCGReg r3) | |
1134 | { | |
1135 | int cc; | |
1136 | if (facilities & FACILITY_LOAD_ON_COND) { | |
1137 | cc = tgen_cmp(s, type, c, c1, c2, c2const); | |
1138 | tcg_out_insn(s, RRF, LOCGR, dest, r3, cc); | |
1139 | } else { | |
1140 | c = tcg_invert_cond(c); | |
1141 | cc = tgen_cmp(s, type, c, c1, c2, c2const); | |
1142 | ||
1143 | /* Emit: if (cc) goto over; dest = r3; over: */ | |
1144 | tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1); | |
1145 | tcg_out_insn(s, RRE, LGR, dest, r3); | |
1146 | } | |
1147 | } | |
1148 | ||
d5690ea4 RH |
1149 | bool tcg_target_deposit_valid(int ofs, int len) |
1150 | { | |
1151 | return (facilities & FACILITY_GEN_INST_EXT) != 0; | |
1152 | } | |
1153 | ||
1154 | static void tgen_deposit(TCGContext *s, TCGReg dest, TCGReg src, | |
1155 | int ofs, int len) | |
1156 | { | |
1157 | int lsb = (63 - ofs); | |
1158 | int msb = lsb - (len - 1); | |
f0bffc27 | 1159 | tcg_out_risbg(s, dest, src, msb, lsb, ofs, 0); |
d5690ea4 RH |
1160 | } |
1161 | ||
48bb3750 RH |
1162 | static void tgen_gotoi(TCGContext *s, int cc, tcg_target_long dest) |
1163 | { | |
1164 | tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1; | |
1165 | if (off > -0x8000 && off < 0x7fff) { | |
1166 | tcg_out_insn(s, RI, BRC, cc, off); | |
1167 | } else if (off == (int32_t)off) { | |
1168 | tcg_out_insn(s, RIL, BRCL, cc, off); | |
1169 | } else { | |
1170 | tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, dest); | |
1171 | tcg_out_insn(s, RR, BCR, cc, TCG_TMP0); | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | static void tgen_branch(TCGContext *s, int cc, int labelno) | |
1176 | { | |
1177 | TCGLabel* l = &s->labels[labelno]; | |
1178 | if (l->has_value) { | |
1179 | tgen_gotoi(s, cc, l->u.value); | |
1180 | } else if (USE_LONG_BRANCHES) { | |
1181 | tcg_out16(s, RIL_BRCL | (cc << 4)); | |
1182 | tcg_out_reloc(s, s->code_ptr, R_390_PC32DBL, labelno, -2); | |
1183 | s->code_ptr += 4; | |
1184 | } else { | |
1185 | tcg_out16(s, RI_BRC | (cc << 4)); | |
1186 | tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, labelno, -2); | |
1187 | s->code_ptr += 2; | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc, | |
1192 | TCGReg r1, TCGReg r2, int labelno) | |
1193 | { | |
1194 | TCGLabel* l = &s->labels[labelno]; | |
1195 | tcg_target_long off; | |
1196 | ||
1197 | if (l->has_value) { | |
1198 | off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1; | |
1199 | } else { | |
1200 | /* We need to keep the offset unchanged for retranslation. */ | |
1201 | off = ((int16_t *)s->code_ptr)[1]; | |
1202 | tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -2); | |
1203 | } | |
1204 | ||
1205 | tcg_out16(s, (opc & 0xff00) | (r1 << 4) | r2); | |
1206 | tcg_out16(s, off); | |
1207 | tcg_out16(s, cc << 12 | (opc & 0xff)); | |
1208 | } | |
1209 | ||
1210 | static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc, | |
1211 | TCGReg r1, int i2, int labelno) | |
1212 | { | |
1213 | TCGLabel* l = &s->labels[labelno]; | |
1214 | tcg_target_long off; | |
1215 | ||
1216 | if (l->has_value) { | |
1217 | off = (l->u.value - (tcg_target_long)s->code_ptr) >> 1; | |
1218 | } else { | |
1219 | /* We need to keep the offset unchanged for retranslation. */ | |
1220 | off = ((int16_t *)s->code_ptr)[1]; | |
1221 | tcg_out_reloc(s, s->code_ptr + 2, R_390_PC16DBL, labelno, -2); | |
1222 | } | |
1223 | ||
1224 | tcg_out16(s, (opc & 0xff00) | (r1 << 4) | cc); | |
1225 | tcg_out16(s, off); | |
1226 | tcg_out16(s, (i2 << 8) | (opc & 0xff)); | |
1227 | } | |
1228 | ||
1229 | static void tgen_brcond(TCGContext *s, TCGType type, TCGCond c, | |
1230 | TCGReg r1, TCGArg c2, int c2const, int labelno) | |
1231 | { | |
1232 | int cc; | |
1233 | ||
1234 | if (facilities & FACILITY_GEN_INST_EXT) { | |
b879f308 | 1235 | bool is_unsigned = is_unsigned_cond(c); |
48bb3750 RH |
1236 | bool in_range; |
1237 | S390Opcode opc; | |
1238 | ||
1239 | cc = tcg_cond_to_s390_cond[c]; | |
1240 | ||
1241 | if (!c2const) { | |
1242 | opc = (type == TCG_TYPE_I32 | |
1243 | ? (is_unsigned ? RIE_CLRJ : RIE_CRJ) | |
1244 | : (is_unsigned ? RIE_CLGRJ : RIE_CGRJ)); | |
1245 | tgen_compare_branch(s, opc, cc, r1, c2, labelno); | |
1246 | return; | |
1247 | } | |
1248 | ||
1249 | /* COMPARE IMMEDIATE AND BRANCH RELATIVE has an 8-bit immediate field. | |
1250 | If the immediate we've been given does not fit that range, we'll | |
1251 | fall back to separate compare and branch instructions using the | |
1252 | larger comparison range afforded by COMPARE IMMEDIATE. */ | |
1253 | if (type == TCG_TYPE_I32) { | |
1254 | if (is_unsigned) { | |
1255 | opc = RIE_CLIJ; | |
1256 | in_range = (uint32_t)c2 == (uint8_t)c2; | |
1257 | } else { | |
1258 | opc = RIE_CIJ; | |
1259 | in_range = (int32_t)c2 == (int8_t)c2; | |
1260 | } | |
1261 | } else { | |
1262 | if (is_unsigned) { | |
1263 | opc = RIE_CLGIJ; | |
1264 | in_range = (uint64_t)c2 == (uint8_t)c2; | |
1265 | } else { | |
1266 | opc = RIE_CGIJ; | |
1267 | in_range = (int64_t)c2 == (int8_t)c2; | |
1268 | } | |
1269 | } | |
1270 | if (in_range) { | |
1271 | tgen_compare_imm_branch(s, opc, cc, r1, c2, labelno); | |
1272 | return; | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | cc = tgen_cmp(s, type, c, r1, c2, c2const); | |
1277 | tgen_branch(s, cc, labelno); | |
1278 | } | |
1279 | ||
1280 | static void tgen_calli(TCGContext *s, tcg_target_long dest) | |
1281 | { | |
1282 | tcg_target_long off = (dest - (tcg_target_long)s->code_ptr) >> 1; | |
1283 | if (off == (int32_t)off) { | |
1284 | tcg_out_insn(s, RIL, BRASL, TCG_REG_R14, off); | |
1285 | } else { | |
1286 | tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, dest); | |
1287 | tcg_out_insn(s, RR, BASR, TCG_REG_R14, TCG_TMP0); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data, | |
1292 | TCGReg base, TCGReg index, int disp) | |
1293 | { | |
1294 | #ifdef TARGET_WORDS_BIGENDIAN | |
1295 | const int bswap = 0; | |
1296 | #else | |
1297 | const int bswap = 1; | |
1298 | #endif | |
1299 | switch (opc) { | |
1300 | case LD_UINT8: | |
1301 | tcg_out_insn(s, RXY, LLGC, data, base, index, disp); | |
1302 | break; | |
1303 | case LD_INT8: | |
1304 | tcg_out_insn(s, RXY, LGB, data, base, index, disp); | |
1305 | break; | |
1306 | case LD_UINT16: | |
1307 | if (bswap) { | |
1308 | /* swapped unsigned halfword load with upper bits zeroed */ | |
1309 | tcg_out_insn(s, RXY, LRVH, data, base, index, disp); | |
1310 | tgen_ext16u(s, TCG_TYPE_I64, data, data); | |
1311 | } else { | |
1312 | tcg_out_insn(s, RXY, LLGH, data, base, index, disp); | |
1313 | } | |
1314 | break; | |
1315 | case LD_INT16: | |
1316 | if (bswap) { | |
1317 | /* swapped sign-extended halfword load */ | |
1318 | tcg_out_insn(s, RXY, LRVH, data, base, index, disp); | |
1319 | tgen_ext16s(s, TCG_TYPE_I64, data, data); | |
1320 | } else { | |
1321 | tcg_out_insn(s, RXY, LGH, data, base, index, disp); | |
1322 | } | |
1323 | break; | |
1324 | case LD_UINT32: | |
1325 | if (bswap) { | |
1326 | /* swapped unsigned int load with upper bits zeroed */ | |
1327 | tcg_out_insn(s, RXY, LRV, data, base, index, disp); | |
1328 | tgen_ext32u(s, data, data); | |
1329 | } else { | |
1330 | tcg_out_insn(s, RXY, LLGF, data, base, index, disp); | |
1331 | } | |
1332 | break; | |
1333 | case LD_INT32: | |
1334 | if (bswap) { | |
1335 | /* swapped sign-extended int load */ | |
1336 | tcg_out_insn(s, RXY, LRV, data, base, index, disp); | |
1337 | tgen_ext32s(s, data, data); | |
1338 | } else { | |
1339 | tcg_out_insn(s, RXY, LGF, data, base, index, disp); | |
1340 | } | |
1341 | break; | |
1342 | case LD_UINT64: | |
1343 | if (bswap) { | |
1344 | tcg_out_insn(s, RXY, LRVG, data, base, index, disp); | |
1345 | } else { | |
1346 | tcg_out_insn(s, RXY, LG, data, base, index, disp); | |
1347 | } | |
1348 | break; | |
1349 | default: | |
1350 | tcg_abort(); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | static void tcg_out_qemu_st_direct(TCGContext *s, int opc, TCGReg data, | |
1355 | TCGReg base, TCGReg index, int disp) | |
1356 | { | |
1357 | #ifdef TARGET_WORDS_BIGENDIAN | |
1358 | const int bswap = 0; | |
1359 | #else | |
1360 | const int bswap = 1; | |
1361 | #endif | |
1362 | switch (opc) { | |
1363 | case LD_UINT8: | |
1364 | if (disp >= 0 && disp < 0x1000) { | |
1365 | tcg_out_insn(s, RX, STC, data, base, index, disp); | |
1366 | } else { | |
1367 | tcg_out_insn(s, RXY, STCY, data, base, index, disp); | |
1368 | } | |
1369 | break; | |
1370 | case LD_UINT16: | |
1371 | if (bswap) { | |
1372 | tcg_out_insn(s, RXY, STRVH, data, base, index, disp); | |
1373 | } else if (disp >= 0 && disp < 0x1000) { | |
1374 | tcg_out_insn(s, RX, STH, data, base, index, disp); | |
1375 | } else { | |
1376 | tcg_out_insn(s, RXY, STHY, data, base, index, disp); | |
1377 | } | |
1378 | break; | |
1379 | case LD_UINT32: | |
1380 | if (bswap) { | |
1381 | tcg_out_insn(s, RXY, STRV, data, base, index, disp); | |
1382 | } else if (disp >= 0 && disp < 0x1000) { | |
1383 | tcg_out_insn(s, RX, ST, data, base, index, disp); | |
1384 | } else { | |
1385 | tcg_out_insn(s, RXY, STY, data, base, index, disp); | |
1386 | } | |
1387 | break; | |
1388 | case LD_UINT64: | |
1389 | if (bswap) { | |
1390 | tcg_out_insn(s, RXY, STRVG, data, base, index, disp); | |
1391 | } else { | |
1392 | tcg_out_insn(s, RXY, STG, data, base, index, disp); | |
1393 | } | |
1394 | break; | |
1395 | default: | |
1396 | tcg_abort(); | |
1397 | } | |
1398 | } | |
1399 | ||
1400 | #if defined(CONFIG_SOFTMMU) | |
65a62a75 RH |
1401 | static TCGReg tcg_prepare_qemu_ldst(TCGContext* s, TCGReg data_reg, |
1402 | TCGReg addr_reg, int mem_index, int opc, | |
1403 | uint16_t **label2_ptr_p, int is_store) | |
48bb3750 | 1404 | { |
65a62a75 RH |
1405 | const TCGReg arg0 = tcg_target_call_iarg_regs[0]; |
1406 | const TCGReg arg1 = tcg_target_call_iarg_regs[1]; | |
1407 | const TCGReg arg2 = tcg_target_call_iarg_regs[2]; | |
1408 | const TCGReg arg3 = tcg_target_call_iarg_regs[3]; | |
48bb3750 RH |
1409 | int s_bits = opc & 3; |
1410 | uint16_t *label1_ptr; | |
1411 | tcg_target_long ofs; | |
1412 | ||
1413 | if (TARGET_LONG_BITS == 32) { | |
65a62a75 | 1414 | tgen_ext32u(s, arg1, addr_reg); |
48bb3750 | 1415 | } else { |
65a62a75 | 1416 | tcg_out_mov(s, TCG_TYPE_I64, arg1, addr_reg); |
48bb3750 RH |
1417 | } |
1418 | ||
65a62a75 | 1419 | tcg_out_sh64(s, RSY_SRLG, arg2, addr_reg, TCG_REG_NONE, |
48bb3750 RH |
1420 | TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
1421 | ||
65a62a75 RH |
1422 | tgen_andi(s, TCG_TYPE_I64, arg1, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); |
1423 | tgen_andi(s, TCG_TYPE_I64, arg2, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); | |
48bb3750 RH |
1424 | |
1425 | if (is_store) { | |
9349b4f9 | 1426 | ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addr_write); |
48bb3750 | 1427 | } else { |
9349b4f9 | 1428 | ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addr_read); |
48bb3750 RH |
1429 | } |
1430 | assert(ofs < 0x80000); | |
1431 | ||
1432 | if (TARGET_LONG_BITS == 32) { | |
65a62a75 | 1433 | tcg_out_mem(s, RX_C, RXY_CY, arg1, arg2, TCG_AREG0, ofs); |
48bb3750 | 1434 | } else { |
65a62a75 | 1435 | tcg_out_mem(s, 0, RXY_CG, arg1, arg2, TCG_AREG0, ofs); |
48bb3750 RH |
1436 | } |
1437 | ||
1438 | if (TARGET_LONG_BITS == 32) { | |
65a62a75 | 1439 | tgen_ext32u(s, arg1, addr_reg); |
48bb3750 | 1440 | } else { |
65a62a75 | 1441 | tcg_out_mov(s, TCG_TYPE_I64, arg1, addr_reg); |
48bb3750 RH |
1442 | } |
1443 | ||
1444 | label1_ptr = (uint16_t*)s->code_ptr; | |
1445 | ||
1446 | /* je label1 (offset will be patched in later) */ | |
1447 | tcg_out_insn(s, RI, BRC, S390_CC_EQ, 0); | |
1448 | ||
1449 | /* call load/store helper */ | |
1450 | if (is_store) { | |
1451 | /* Make sure to zero-extend the value to the full register | |
1452 | for the calling convention. */ | |
1453 | switch (opc) { | |
1454 | case LD_UINT8: | |
65a62a75 | 1455 | tgen_ext8u(s, TCG_TYPE_I64, arg2, data_reg); |
48bb3750 RH |
1456 | break; |
1457 | case LD_UINT16: | |
65a62a75 | 1458 | tgen_ext16u(s, TCG_TYPE_I64, arg2, data_reg); |
48bb3750 RH |
1459 | break; |
1460 | case LD_UINT32: | |
65a62a75 | 1461 | tgen_ext32u(s, arg2, data_reg); |
48bb3750 RH |
1462 | break; |
1463 | case LD_UINT64: | |
65a62a75 | 1464 | tcg_out_mov(s, TCG_TYPE_I64, arg2, data_reg); |
48bb3750 RH |
1465 | break; |
1466 | default: | |
1467 | tcg_abort(); | |
1468 | } | |
65a62a75 RH |
1469 | tcg_out_movi(s, TCG_TYPE_I32, arg3, mem_index); |
1470 | tcg_out_mov(s, TCG_TYPE_I64, arg0, TCG_AREG0); | |
48bb3750 RH |
1471 | tgen_calli(s, (tcg_target_ulong)qemu_st_helpers[s_bits]); |
1472 | } else { | |
65a62a75 RH |
1473 | tcg_out_movi(s, TCG_TYPE_I32, arg2, mem_index); |
1474 | tcg_out_mov(s, TCG_TYPE_I64, arg0, TCG_AREG0); | |
48bb3750 RH |
1475 | tgen_calli(s, (tcg_target_ulong)qemu_ld_helpers[s_bits]); |
1476 | ||
1477 | /* sign extension */ | |
1478 | switch (opc) { | |
1479 | case LD_INT8: | |
65a62a75 | 1480 | tgen_ext8s(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
48bb3750 RH |
1481 | break; |
1482 | case LD_INT16: | |
65a62a75 | 1483 | tgen_ext16s(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
48bb3750 RH |
1484 | break; |
1485 | case LD_INT32: | |
65a62a75 | 1486 | tgen_ext32s(s, data_reg, TCG_REG_R2); |
48bb3750 RH |
1487 | break; |
1488 | default: | |
1489 | /* unsigned -> just copy */ | |
65a62a75 | 1490 | tcg_out_mov(s, TCG_TYPE_I64, data_reg, TCG_REG_R2); |
48bb3750 RH |
1491 | break; |
1492 | } | |
1493 | } | |
1494 | ||
1495 | /* jump to label2 (end) */ | |
1496 | *label2_ptr_p = (uint16_t*)s->code_ptr; | |
1497 | ||
1498 | tcg_out_insn(s, RI, BRC, S390_CC_ALWAYS, 0); | |
1499 | ||
1500 | /* this is label1, patch branch */ | |
1501 | *(label1_ptr + 1) = ((unsigned long)s->code_ptr - | |
1502 | (unsigned long)label1_ptr) >> 1; | |
1503 | ||
9349b4f9 | 1504 | ofs = offsetof(CPUArchState, tlb_table[mem_index][0].addend); |
48bb3750 RH |
1505 | assert(ofs < 0x80000); |
1506 | ||
65a62a75 RH |
1507 | tcg_out_mem(s, 0, RXY_AG, arg1, arg2, TCG_AREG0, ofs); |
1508 | ||
1509 | return arg1; | |
48bb3750 RH |
1510 | } |
1511 | ||
1512 | static void tcg_finish_qemu_ldst(TCGContext* s, uint16_t *label2_ptr) | |
1513 | { | |
1514 | /* patch branch */ | |
1515 | *(label2_ptr + 1) = ((unsigned long)s->code_ptr - | |
1516 | (unsigned long)label2_ptr) >> 1; | |
1517 | } | |
1518 | #else | |
1519 | static void tcg_prepare_user_ldst(TCGContext *s, TCGReg *addr_reg, | |
1520 | TCGReg *index_reg, tcg_target_long *disp) | |
1521 | { | |
1522 | if (TARGET_LONG_BITS == 32) { | |
1523 | tgen_ext32u(s, TCG_TMP0, *addr_reg); | |
1524 | *addr_reg = TCG_TMP0; | |
1525 | } | |
1526 | if (GUEST_BASE < 0x80000) { | |
1527 | *index_reg = TCG_REG_NONE; | |
1528 | *disp = GUEST_BASE; | |
1529 | } else { | |
1530 | *index_reg = TCG_GUEST_BASE_REG; | |
1531 | *disp = 0; | |
1532 | } | |
1533 | } | |
1534 | #endif /* CONFIG_SOFTMMU */ | |
1535 | ||
1536 | /* load data with address translation (if applicable) | |
1537 | and endianness conversion */ | |
1538 | static void tcg_out_qemu_ld(TCGContext* s, const TCGArg* args, int opc) | |
1539 | { | |
1540 | TCGReg addr_reg, data_reg; | |
1541 | #if defined(CONFIG_SOFTMMU) | |
1542 | int mem_index; | |
1543 | uint16_t *label2_ptr; | |
1544 | #else | |
1545 | TCGReg index_reg; | |
1546 | tcg_target_long disp; | |
1547 | #endif | |
1548 | ||
1549 | data_reg = *args++; | |
1550 | addr_reg = *args++; | |
1551 | ||
1552 | #if defined(CONFIG_SOFTMMU) | |
1553 | mem_index = *args; | |
1554 | ||
65a62a75 RH |
1555 | addr_reg = tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index, |
1556 | opc, &label2_ptr, 0); | |
48bb3750 | 1557 | |
65a62a75 | 1558 | tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, TCG_REG_NONE, 0); |
48bb3750 RH |
1559 | |
1560 | tcg_finish_qemu_ldst(s, label2_ptr); | |
1561 | #else | |
1562 | tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); | |
1563 | tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, index_reg, disp); | |
1564 | #endif | |
1565 | } | |
1566 | ||
1567 | static void tcg_out_qemu_st(TCGContext* s, const TCGArg* args, int opc) | |
1568 | { | |
1569 | TCGReg addr_reg, data_reg; | |
1570 | #if defined(CONFIG_SOFTMMU) | |
1571 | int mem_index; | |
1572 | uint16_t *label2_ptr; | |
1573 | #else | |
1574 | TCGReg index_reg; | |
1575 | tcg_target_long disp; | |
1576 | #endif | |
1577 | ||
1578 | data_reg = *args++; | |
1579 | addr_reg = *args++; | |
1580 | ||
1581 | #if defined(CONFIG_SOFTMMU) | |
1582 | mem_index = *args; | |
1583 | ||
65a62a75 RH |
1584 | addr_reg = tcg_prepare_qemu_ldst(s, data_reg, addr_reg, mem_index, |
1585 | opc, &label2_ptr, 1); | |
48bb3750 | 1586 | |
65a62a75 | 1587 | tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, TCG_REG_NONE, 0); |
48bb3750 RH |
1588 | |
1589 | tcg_finish_qemu_ldst(s, label2_ptr); | |
1590 | #else | |
1591 | tcg_prepare_user_ldst(s, &addr_reg, &index_reg, &disp); | |
1592 | tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, index_reg, disp); | |
1593 | #endif | |
2827822e AG |
1594 | } |
1595 | ||
48bb3750 RH |
1596 | # define OP_32_64(x) \ |
1597 | case glue(glue(INDEX_op_,x),_i32): \ | |
1598 | case glue(glue(INDEX_op_,x),_i64) | |
48bb3750 | 1599 | |
a9751609 | 1600 | static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, |
2827822e AG |
1601 | const TCGArg *args, const int *const_args) |
1602 | { | |
48bb3750 | 1603 | S390Opcode op; |
0db921e6 | 1604 | TCGArg a0, a1, a2; |
48bb3750 RH |
1605 | |
1606 | switch (opc) { | |
1607 | case INDEX_op_exit_tb: | |
1608 | /* return value */ | |
1609 | tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R2, args[0]); | |
1610 | tgen_gotoi(s, S390_CC_ALWAYS, (unsigned long)tb_ret_addr); | |
1611 | break; | |
1612 | ||
1613 | case INDEX_op_goto_tb: | |
1614 | if (s->tb_jmp_offset) { | |
1615 | tcg_abort(); | |
1616 | } else { | |
1617 | /* load address stored at s->tb_next + args[0] */ | |
1618 | tcg_out_ld_abs(s, TCG_TYPE_PTR, TCG_TMP0, s->tb_next + args[0]); | |
1619 | /* and go there */ | |
1620 | tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_TMP0); | |
1621 | } | |
1622 | s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; | |
1623 | break; | |
1624 | ||
1625 | case INDEX_op_call: | |
1626 | if (const_args[0]) { | |
1627 | tgen_calli(s, args[0]); | |
1628 | } else { | |
1629 | tcg_out_insn(s, RR, BASR, TCG_REG_R14, args[0]); | |
1630 | } | |
1631 | break; | |
1632 | ||
1633 | case INDEX_op_mov_i32: | |
1634 | tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]); | |
1635 | break; | |
1636 | case INDEX_op_movi_i32: | |
1637 | tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]); | |
1638 | break; | |
1639 | ||
1640 | OP_32_64(ld8u): | |
1641 | /* ??? LLC (RXY format) is only present with the extended-immediate | |
1642 | facility, whereas LLGC is always present. */ | |
1643 | tcg_out_mem(s, 0, RXY_LLGC, args[0], args[1], TCG_REG_NONE, args[2]); | |
1644 | break; | |
1645 | ||
1646 | OP_32_64(ld8s): | |
1647 | /* ??? LB is no smaller than LGB, so no point to using it. */ | |
1648 | tcg_out_mem(s, 0, RXY_LGB, args[0], args[1], TCG_REG_NONE, args[2]); | |
1649 | break; | |
1650 | ||
1651 | OP_32_64(ld16u): | |
1652 | /* ??? LLH (RXY format) is only present with the extended-immediate | |
1653 | facility, whereas LLGH is always present. */ | |
1654 | tcg_out_mem(s, 0, RXY_LLGH, args[0], args[1], TCG_REG_NONE, args[2]); | |
1655 | break; | |
1656 | ||
1657 | case INDEX_op_ld16s_i32: | |
1658 | tcg_out_mem(s, RX_LH, RXY_LHY, args[0], args[1], TCG_REG_NONE, args[2]); | |
1659 | break; | |
1660 | ||
1661 | case INDEX_op_ld_i32: | |
1662 | tcg_out_ld(s, TCG_TYPE_I32, args[0], args[1], args[2]); | |
1663 | break; | |
1664 | ||
1665 | OP_32_64(st8): | |
1666 | tcg_out_mem(s, RX_STC, RXY_STCY, args[0], args[1], | |
1667 | TCG_REG_NONE, args[2]); | |
1668 | break; | |
1669 | ||
1670 | OP_32_64(st16): | |
1671 | tcg_out_mem(s, RX_STH, RXY_STHY, args[0], args[1], | |
1672 | TCG_REG_NONE, args[2]); | |
1673 | break; | |
1674 | ||
1675 | case INDEX_op_st_i32: | |
1676 | tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); | |
1677 | break; | |
1678 | ||
1679 | case INDEX_op_add_i32: | |
0db921e6 | 1680 | a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; |
48bb3750 | 1681 | if (const_args[2]) { |
0db921e6 RH |
1682 | do_addi_32: |
1683 | if (a0 == a1) { | |
1684 | if (a2 == (int16_t)a2) { | |
1685 | tcg_out_insn(s, RI, AHI, a0, a2); | |
1686 | break; | |
1687 | } | |
1688 | if (facilities & FACILITY_EXT_IMM) { | |
1689 | tcg_out_insn(s, RIL, AFI, a0, a2); | |
1690 | break; | |
1691 | } | |
1692 | } | |
1693 | tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); | |
1694 | } else if (a0 == a1) { | |
1695 | tcg_out_insn(s, RR, AR, a0, a2); | |
48bb3750 | 1696 | } else { |
0db921e6 | 1697 | tcg_out_insn(s, RX, LA, a0, a1, a2, 0); |
48bb3750 RH |
1698 | } |
1699 | break; | |
1700 | case INDEX_op_sub_i32: | |
0db921e6 | 1701 | a0 = args[0], a1 = args[1], a2 = (int32_t)args[2]; |
48bb3750 | 1702 | if (const_args[2]) { |
0db921e6 RH |
1703 | a2 = -a2; |
1704 | goto do_addi_32; | |
48bb3750 | 1705 | } |
0db921e6 | 1706 | tcg_out_insn(s, RR, SR, args[0], args[2]); |
48bb3750 RH |
1707 | break; |
1708 | ||
1709 | case INDEX_op_and_i32: | |
1710 | if (const_args[2]) { | |
07ff7983 | 1711 | tgen_andi(s, TCG_TYPE_I32, args[0], args[2]); |
48bb3750 RH |
1712 | } else { |
1713 | tcg_out_insn(s, RR, NR, args[0], args[2]); | |
1714 | } | |
1715 | break; | |
1716 | case INDEX_op_or_i32: | |
1717 | if (const_args[2]) { | |
1718 | tgen64_ori(s, args[0], args[2] & 0xffffffff); | |
1719 | } else { | |
1720 | tcg_out_insn(s, RR, OR, args[0], args[2]); | |
1721 | } | |
1722 | break; | |
1723 | case INDEX_op_xor_i32: | |
1724 | if (const_args[2]) { | |
1725 | tgen64_xori(s, args[0], args[2] & 0xffffffff); | |
1726 | } else { | |
1727 | tcg_out_insn(s, RR, XR, args[0], args[2]); | |
1728 | } | |
1729 | break; | |
1730 | ||
1731 | case INDEX_op_neg_i32: | |
1732 | tcg_out_insn(s, RR, LCR, args[0], args[1]); | |
1733 | break; | |
1734 | ||
1735 | case INDEX_op_mul_i32: | |
1736 | if (const_args[2]) { | |
1737 | if ((int32_t)args[2] == (int16_t)args[2]) { | |
1738 | tcg_out_insn(s, RI, MHI, args[0], args[2]); | |
1739 | } else { | |
1740 | tcg_out_insn(s, RIL, MSFI, args[0], args[2]); | |
1741 | } | |
1742 | } else { | |
1743 | tcg_out_insn(s, RRE, MSR, args[0], args[2]); | |
1744 | } | |
1745 | break; | |
1746 | ||
1747 | case INDEX_op_div2_i32: | |
1748 | tcg_out_insn(s, RR, DR, TCG_REG_R2, args[4]); | |
1749 | break; | |
1750 | case INDEX_op_divu2_i32: | |
1751 | tcg_out_insn(s, RRE, DLR, TCG_REG_R2, args[4]); | |
1752 | break; | |
1753 | ||
1754 | case INDEX_op_shl_i32: | |
1755 | op = RS_SLL; | |
1756 | do_shift32: | |
1757 | if (const_args[2]) { | |
1758 | tcg_out_sh32(s, op, args[0], TCG_REG_NONE, args[2]); | |
1759 | } else { | |
1760 | tcg_out_sh32(s, op, args[0], args[2], 0); | |
1761 | } | |
1762 | break; | |
1763 | case INDEX_op_shr_i32: | |
1764 | op = RS_SRL; | |
1765 | goto do_shift32; | |
1766 | case INDEX_op_sar_i32: | |
1767 | op = RS_SRA; | |
1768 | goto do_shift32; | |
1769 | ||
1770 | case INDEX_op_rotl_i32: | |
1771 | /* ??? Using tcg_out_sh64 here for the format; it is a 32-bit rol. */ | |
1772 | if (const_args[2]) { | |
1773 | tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_REG_NONE, args[2]); | |
1774 | } else { | |
1775 | tcg_out_sh64(s, RSY_RLL, args[0], args[1], args[2], 0); | |
1776 | } | |
1777 | break; | |
1778 | case INDEX_op_rotr_i32: | |
1779 | if (const_args[2]) { | |
1780 | tcg_out_sh64(s, RSY_RLL, args[0], args[1], | |
1781 | TCG_REG_NONE, (32 - args[2]) & 31); | |
1782 | } else { | |
1783 | tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); | |
1784 | tcg_out_sh64(s, RSY_RLL, args[0], args[1], TCG_TMP0, 0); | |
1785 | } | |
1786 | break; | |
1787 | ||
1788 | case INDEX_op_ext8s_i32: | |
1789 | tgen_ext8s(s, TCG_TYPE_I32, args[0], args[1]); | |
1790 | break; | |
1791 | case INDEX_op_ext16s_i32: | |
1792 | tgen_ext16s(s, TCG_TYPE_I32, args[0], args[1]); | |
1793 | break; | |
1794 | case INDEX_op_ext8u_i32: | |
1795 | tgen_ext8u(s, TCG_TYPE_I32, args[0], args[1]); | |
1796 | break; | |
1797 | case INDEX_op_ext16u_i32: | |
1798 | tgen_ext16u(s, TCG_TYPE_I32, args[0], args[1]); | |
1799 | break; | |
1800 | ||
1801 | OP_32_64(bswap16): | |
1802 | /* The TCG bswap definition requires bits 0-47 already be zero. | |
1803 | Thus we don't need the G-type insns to implement bswap16_i64. */ | |
1804 | tcg_out_insn(s, RRE, LRVR, args[0], args[1]); | |
1805 | tcg_out_sh32(s, RS_SRL, args[0], TCG_REG_NONE, 16); | |
1806 | break; | |
1807 | OP_32_64(bswap32): | |
1808 | tcg_out_insn(s, RRE, LRVR, args[0], args[1]); | |
1809 | break; | |
1810 | ||
3790b918 RH |
1811 | case INDEX_op_add2_i32: |
1812 | /* ??? Make use of ALFI. */ | |
1813 | tcg_out_insn(s, RR, ALR, args[0], args[4]); | |
1814 | tcg_out_insn(s, RRE, ALCR, args[1], args[5]); | |
1815 | break; | |
1816 | case INDEX_op_sub2_i32: | |
1817 | /* ??? Make use of SLFI. */ | |
1818 | tcg_out_insn(s, RR, SLR, args[0], args[4]); | |
1819 | tcg_out_insn(s, RRE, SLBR, args[1], args[5]); | |
1820 | break; | |
1821 | ||
48bb3750 RH |
1822 | case INDEX_op_br: |
1823 | tgen_branch(s, S390_CC_ALWAYS, args[0]); | |
1824 | break; | |
1825 | ||
1826 | case INDEX_op_brcond_i32: | |
1827 | tgen_brcond(s, TCG_TYPE_I32, args[2], args[0], | |
1828 | args[1], const_args[1], args[3]); | |
1829 | break; | |
1830 | case INDEX_op_setcond_i32: | |
1831 | tgen_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], | |
1832 | args[2], const_args[2]); | |
1833 | break; | |
96a9f093 RH |
1834 | case INDEX_op_movcond_i32: |
1835 | tgen_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], | |
1836 | args[2], const_args[2], args[3]); | |
1837 | break; | |
48bb3750 RH |
1838 | |
1839 | case INDEX_op_qemu_ld8u: | |
1840 | tcg_out_qemu_ld(s, args, LD_UINT8); | |
1841 | break; | |
1842 | case INDEX_op_qemu_ld8s: | |
1843 | tcg_out_qemu_ld(s, args, LD_INT8); | |
1844 | break; | |
1845 | case INDEX_op_qemu_ld16u: | |
1846 | tcg_out_qemu_ld(s, args, LD_UINT16); | |
1847 | break; | |
1848 | case INDEX_op_qemu_ld16s: | |
1849 | tcg_out_qemu_ld(s, args, LD_INT16); | |
1850 | break; | |
1851 | case INDEX_op_qemu_ld32: | |
1852 | /* ??? Technically we can use a non-extending instruction. */ | |
1853 | tcg_out_qemu_ld(s, args, LD_UINT32); | |
1854 | break; | |
1855 | case INDEX_op_qemu_ld64: | |
1856 | tcg_out_qemu_ld(s, args, LD_UINT64); | |
1857 | break; | |
1858 | ||
1859 | case INDEX_op_qemu_st8: | |
1860 | tcg_out_qemu_st(s, args, LD_UINT8); | |
1861 | break; | |
1862 | case INDEX_op_qemu_st16: | |
1863 | tcg_out_qemu_st(s, args, LD_UINT16); | |
1864 | break; | |
1865 | case INDEX_op_qemu_st32: | |
1866 | tcg_out_qemu_st(s, args, LD_UINT32); | |
1867 | break; | |
1868 | case INDEX_op_qemu_st64: | |
1869 | tcg_out_qemu_st(s, args, LD_UINT64); | |
1870 | break; | |
1871 | ||
48bb3750 RH |
1872 | case INDEX_op_mov_i64: |
1873 | tcg_out_mov(s, TCG_TYPE_I64, args[0], args[1]); | |
1874 | break; | |
1875 | case INDEX_op_movi_i64: | |
1876 | tcg_out_movi(s, TCG_TYPE_I64, args[0], args[1]); | |
1877 | break; | |
1878 | ||
1879 | case INDEX_op_ld16s_i64: | |
1880 | tcg_out_mem(s, 0, RXY_LGH, args[0], args[1], TCG_REG_NONE, args[2]); | |
1881 | break; | |
1882 | case INDEX_op_ld32u_i64: | |
1883 | tcg_out_mem(s, 0, RXY_LLGF, args[0], args[1], TCG_REG_NONE, args[2]); | |
1884 | break; | |
1885 | case INDEX_op_ld32s_i64: | |
1886 | tcg_out_mem(s, 0, RXY_LGF, args[0], args[1], TCG_REG_NONE, args[2]); | |
1887 | break; | |
1888 | case INDEX_op_ld_i64: | |
1889 | tcg_out_ld(s, TCG_TYPE_I64, args[0], args[1], args[2]); | |
1890 | break; | |
1891 | ||
1892 | case INDEX_op_st32_i64: | |
1893 | tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); | |
1894 | break; | |
1895 | case INDEX_op_st_i64: | |
1896 | tcg_out_st(s, TCG_TYPE_I64, args[0], args[1], args[2]); | |
1897 | break; | |
1898 | ||
1899 | case INDEX_op_add_i64: | |
0db921e6 | 1900 | a0 = args[0], a1 = args[1], a2 = args[2]; |
48bb3750 | 1901 | if (const_args[2]) { |
0db921e6 RH |
1902 | do_addi_64: |
1903 | if (a0 == a1) { | |
1904 | if (a2 == (int16_t)a2) { | |
1905 | tcg_out_insn(s, RI, AGHI, a0, a2); | |
1906 | break; | |
1907 | } | |
1908 | if (facilities & FACILITY_EXT_IMM) { | |
1909 | if (a2 == (int32_t)a2) { | |
1910 | tcg_out_insn(s, RIL, AGFI, a0, a2); | |
1911 | break; | |
1912 | } else if (a2 == (uint32_t)a2) { | |
1913 | tcg_out_insn(s, RIL, ALGFI, a0, a2); | |
1914 | break; | |
1915 | } else if (-a2 == (uint32_t)-a2) { | |
1916 | tcg_out_insn(s, RIL, SLGFI, a0, -a2); | |
1917 | break; | |
1918 | } | |
1919 | } | |
1920 | } | |
1921 | tcg_out_mem(s, RX_LA, RXY_LAY, a0, a1, TCG_REG_NONE, a2); | |
1922 | } else if (a0 == a1) { | |
1923 | tcg_out_insn(s, RRE, AGR, a0, a2); | |
48bb3750 | 1924 | } else { |
0db921e6 | 1925 | tcg_out_insn(s, RX, LA, a0, a1, a2, 0); |
48bb3750 RH |
1926 | } |
1927 | break; | |
1928 | case INDEX_op_sub_i64: | |
0db921e6 | 1929 | a0 = args[0], a1 = args[1], a2 = args[2]; |
48bb3750 | 1930 | if (const_args[2]) { |
0db921e6 RH |
1931 | a2 = -a2; |
1932 | goto do_addi_64; | |
48bb3750 RH |
1933 | } else { |
1934 | tcg_out_insn(s, RRE, SGR, args[0], args[2]); | |
1935 | } | |
1936 | break; | |
1937 | ||
1938 | case INDEX_op_and_i64: | |
1939 | if (const_args[2]) { | |
07ff7983 | 1940 | tgen_andi(s, TCG_TYPE_I64, args[0], args[2]); |
48bb3750 RH |
1941 | } else { |
1942 | tcg_out_insn(s, RRE, NGR, args[0], args[2]); | |
1943 | } | |
1944 | break; | |
1945 | case INDEX_op_or_i64: | |
1946 | if (const_args[2]) { | |
1947 | tgen64_ori(s, args[0], args[2]); | |
1948 | } else { | |
1949 | tcg_out_insn(s, RRE, OGR, args[0], args[2]); | |
1950 | } | |
1951 | break; | |
1952 | case INDEX_op_xor_i64: | |
1953 | if (const_args[2]) { | |
1954 | tgen64_xori(s, args[0], args[2]); | |
1955 | } else { | |
1956 | tcg_out_insn(s, RRE, XGR, args[0], args[2]); | |
1957 | } | |
1958 | break; | |
1959 | ||
1960 | case INDEX_op_neg_i64: | |
1961 | tcg_out_insn(s, RRE, LCGR, args[0], args[1]); | |
1962 | break; | |
1963 | case INDEX_op_bswap64_i64: | |
1964 | tcg_out_insn(s, RRE, LRVGR, args[0], args[1]); | |
1965 | break; | |
1966 | ||
1967 | case INDEX_op_mul_i64: | |
1968 | if (const_args[2]) { | |
1969 | if (args[2] == (int16_t)args[2]) { | |
1970 | tcg_out_insn(s, RI, MGHI, args[0], args[2]); | |
1971 | } else { | |
1972 | tcg_out_insn(s, RIL, MSGFI, args[0], args[2]); | |
1973 | } | |
1974 | } else { | |
1975 | tcg_out_insn(s, RRE, MSGR, args[0], args[2]); | |
1976 | } | |
1977 | break; | |
1978 | ||
1979 | case INDEX_op_div2_i64: | |
1980 | /* ??? We get an unnecessary sign-extension of the dividend | |
1981 | into R3 with this definition, but as we do in fact always | |
1982 | produce both quotient and remainder using INDEX_op_div_i64 | |
1983 | instead requires jumping through even more hoops. */ | |
1984 | tcg_out_insn(s, RRE, DSGR, TCG_REG_R2, args[4]); | |
1985 | break; | |
1986 | case INDEX_op_divu2_i64: | |
1987 | tcg_out_insn(s, RRE, DLGR, TCG_REG_R2, args[4]); | |
1988 | break; | |
36017dc6 RH |
1989 | case INDEX_op_mulu2_i64: |
1990 | tcg_out_insn(s, RRE, MLGR, TCG_REG_R2, args[3]); | |
1991 | break; | |
48bb3750 RH |
1992 | |
1993 | case INDEX_op_shl_i64: | |
1994 | op = RSY_SLLG; | |
1995 | do_shift64: | |
1996 | if (const_args[2]) { | |
1997 | tcg_out_sh64(s, op, args[0], args[1], TCG_REG_NONE, args[2]); | |
1998 | } else { | |
1999 | tcg_out_sh64(s, op, args[0], args[1], args[2], 0); | |
2000 | } | |
2001 | break; | |
2002 | case INDEX_op_shr_i64: | |
2003 | op = RSY_SRLG; | |
2004 | goto do_shift64; | |
2005 | case INDEX_op_sar_i64: | |
2006 | op = RSY_SRAG; | |
2007 | goto do_shift64; | |
2008 | ||
2009 | case INDEX_op_rotl_i64: | |
2010 | if (const_args[2]) { | |
2011 | tcg_out_sh64(s, RSY_RLLG, args[0], args[1], | |
2012 | TCG_REG_NONE, args[2]); | |
2013 | } else { | |
2014 | tcg_out_sh64(s, RSY_RLLG, args[0], args[1], args[2], 0); | |
2015 | } | |
2016 | break; | |
2017 | case INDEX_op_rotr_i64: | |
2018 | if (const_args[2]) { | |
2019 | tcg_out_sh64(s, RSY_RLLG, args[0], args[1], | |
2020 | TCG_REG_NONE, (64 - args[2]) & 63); | |
2021 | } else { | |
2022 | /* We can use the smaller 32-bit negate because only the | |
2023 | low 6 bits are examined for the rotate. */ | |
2024 | tcg_out_insn(s, RR, LCR, TCG_TMP0, args[2]); | |
2025 | tcg_out_sh64(s, RSY_RLLG, args[0], args[1], TCG_TMP0, 0); | |
2026 | } | |
2027 | break; | |
2028 | ||
2029 | case INDEX_op_ext8s_i64: | |
2030 | tgen_ext8s(s, TCG_TYPE_I64, args[0], args[1]); | |
2031 | break; | |
2032 | case INDEX_op_ext16s_i64: | |
2033 | tgen_ext16s(s, TCG_TYPE_I64, args[0], args[1]); | |
2034 | break; | |
2035 | case INDEX_op_ext32s_i64: | |
2036 | tgen_ext32s(s, args[0], args[1]); | |
2037 | break; | |
2038 | case INDEX_op_ext8u_i64: | |
2039 | tgen_ext8u(s, TCG_TYPE_I64, args[0], args[1]); | |
2040 | break; | |
2041 | case INDEX_op_ext16u_i64: | |
2042 | tgen_ext16u(s, TCG_TYPE_I64, args[0], args[1]); | |
2043 | break; | |
2044 | case INDEX_op_ext32u_i64: | |
2045 | tgen_ext32u(s, args[0], args[1]); | |
2046 | break; | |
2047 | ||
3790b918 RH |
2048 | case INDEX_op_add2_i64: |
2049 | /* ??? Make use of ALGFI and SLGFI. */ | |
2050 | tcg_out_insn(s, RRE, ALGR, args[0], args[4]); | |
2051 | tcg_out_insn(s, RRE, ALCGR, args[1], args[5]); | |
2052 | break; | |
2053 | case INDEX_op_sub2_i64: | |
2054 | /* ??? Make use of ALGFI and SLGFI. */ | |
2055 | tcg_out_insn(s, RRE, SLGR, args[0], args[4]); | |
2056 | tcg_out_insn(s, RRE, SLBGR, args[1], args[5]); | |
2057 | break; | |
2058 | ||
48bb3750 RH |
2059 | case INDEX_op_brcond_i64: |
2060 | tgen_brcond(s, TCG_TYPE_I64, args[2], args[0], | |
2061 | args[1], const_args[1], args[3]); | |
2062 | break; | |
2063 | case INDEX_op_setcond_i64: | |
2064 | tgen_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], | |
2065 | args[2], const_args[2]); | |
2066 | break; | |
96a9f093 RH |
2067 | case INDEX_op_movcond_i64: |
2068 | tgen_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], | |
2069 | args[2], const_args[2], args[3]); | |
2070 | break; | |
48bb3750 RH |
2071 | |
2072 | case INDEX_op_qemu_ld32u: | |
2073 | tcg_out_qemu_ld(s, args, LD_UINT32); | |
2074 | break; | |
2075 | case INDEX_op_qemu_ld32s: | |
2076 | tcg_out_qemu_ld(s, args, LD_INT32); | |
2077 | break; | |
48bb3750 | 2078 | |
d5690ea4 RH |
2079 | OP_32_64(deposit): |
2080 | tgen_deposit(s, args[0], args[2], args[3], args[4]); | |
2081 | break; | |
2082 | ||
48bb3750 RH |
2083 | default: |
2084 | fprintf(stderr,"unimplemented opc 0x%x\n",opc); | |
2085 | tcg_abort(); | |
2086 | } | |
2827822e AG |
2087 | } |
2088 | ||
48bb3750 RH |
2089 | static const TCGTargetOpDef s390_op_defs[] = { |
2090 | { INDEX_op_exit_tb, { } }, | |
2091 | { INDEX_op_goto_tb, { } }, | |
2092 | { INDEX_op_call, { "ri" } }, | |
48bb3750 RH |
2093 | { INDEX_op_br, { } }, |
2094 | ||
2095 | { INDEX_op_mov_i32, { "r", "r" } }, | |
2096 | { INDEX_op_movi_i32, { "r" } }, | |
2097 | ||
2098 | { INDEX_op_ld8u_i32, { "r", "r" } }, | |
2099 | { INDEX_op_ld8s_i32, { "r", "r" } }, | |
2100 | { INDEX_op_ld16u_i32, { "r", "r" } }, | |
2101 | { INDEX_op_ld16s_i32, { "r", "r" } }, | |
2102 | { INDEX_op_ld_i32, { "r", "r" } }, | |
2103 | { INDEX_op_st8_i32, { "r", "r" } }, | |
2104 | { INDEX_op_st16_i32, { "r", "r" } }, | |
2105 | { INDEX_op_st_i32, { "r", "r" } }, | |
2106 | ||
0db921e6 RH |
2107 | { INDEX_op_add_i32, { "r", "r", "ri" } }, |
2108 | { INDEX_op_sub_i32, { "r", "0", "ri" } }, | |
48bb3750 RH |
2109 | { INDEX_op_mul_i32, { "r", "0", "rK" } }, |
2110 | ||
2111 | { INDEX_op_div2_i32, { "b", "a", "0", "1", "r" } }, | |
2112 | { INDEX_op_divu2_i32, { "b", "a", "0", "1", "r" } }, | |
2113 | ||
07ff7983 | 2114 | { INDEX_op_and_i32, { "r", "0", "ri" } }, |
48bb3750 RH |
2115 | { INDEX_op_or_i32, { "r", "0", "rWO" } }, |
2116 | { INDEX_op_xor_i32, { "r", "0", "rWX" } }, | |
2117 | ||
2118 | { INDEX_op_neg_i32, { "r", "r" } }, | |
2119 | ||
2120 | { INDEX_op_shl_i32, { "r", "0", "Ri" } }, | |
2121 | { INDEX_op_shr_i32, { "r", "0", "Ri" } }, | |
2122 | { INDEX_op_sar_i32, { "r", "0", "Ri" } }, | |
2123 | ||
2124 | { INDEX_op_rotl_i32, { "r", "r", "Ri" } }, | |
2125 | { INDEX_op_rotr_i32, { "r", "r", "Ri" } }, | |
2126 | ||
2127 | { INDEX_op_ext8s_i32, { "r", "r" } }, | |
2128 | { INDEX_op_ext8u_i32, { "r", "r" } }, | |
2129 | { INDEX_op_ext16s_i32, { "r", "r" } }, | |
2130 | { INDEX_op_ext16u_i32, { "r", "r" } }, | |
2131 | ||
2132 | { INDEX_op_bswap16_i32, { "r", "r" } }, | |
2133 | { INDEX_op_bswap32_i32, { "r", "r" } }, | |
2134 | ||
3790b918 RH |
2135 | { INDEX_op_add2_i32, { "r", "r", "0", "1", "r", "r" } }, |
2136 | { INDEX_op_sub2_i32, { "r", "r", "0", "1", "r", "r" } }, | |
2137 | ||
48bb3750 RH |
2138 | { INDEX_op_brcond_i32, { "r", "rWC" } }, |
2139 | { INDEX_op_setcond_i32, { "r", "r", "rWC" } }, | |
96a9f093 | 2140 | { INDEX_op_movcond_i32, { "r", "r", "rWC", "r", "0" } }, |
d5690ea4 | 2141 | { INDEX_op_deposit_i32, { "r", "0", "r" } }, |
48bb3750 RH |
2142 | |
2143 | { INDEX_op_qemu_ld8u, { "r", "L" } }, | |
2144 | { INDEX_op_qemu_ld8s, { "r", "L" } }, | |
2145 | { INDEX_op_qemu_ld16u, { "r", "L" } }, | |
2146 | { INDEX_op_qemu_ld16s, { "r", "L" } }, | |
2147 | { INDEX_op_qemu_ld32, { "r", "L" } }, | |
2148 | { INDEX_op_qemu_ld64, { "r", "L" } }, | |
2149 | ||
2150 | { INDEX_op_qemu_st8, { "L", "L" } }, | |
2151 | { INDEX_op_qemu_st16, { "L", "L" } }, | |
2152 | { INDEX_op_qemu_st32, { "L", "L" } }, | |
2153 | { INDEX_op_qemu_st64, { "L", "L" } }, | |
2154 | ||
48bb3750 RH |
2155 | { INDEX_op_mov_i64, { "r", "r" } }, |
2156 | { INDEX_op_movi_i64, { "r" } }, | |
2157 | ||
2158 | { INDEX_op_ld8u_i64, { "r", "r" } }, | |
2159 | { INDEX_op_ld8s_i64, { "r", "r" } }, | |
2160 | { INDEX_op_ld16u_i64, { "r", "r" } }, | |
2161 | { INDEX_op_ld16s_i64, { "r", "r" } }, | |
2162 | { INDEX_op_ld32u_i64, { "r", "r" } }, | |
2163 | { INDEX_op_ld32s_i64, { "r", "r" } }, | |
2164 | { INDEX_op_ld_i64, { "r", "r" } }, | |
2165 | ||
2166 | { INDEX_op_st8_i64, { "r", "r" } }, | |
2167 | { INDEX_op_st16_i64, { "r", "r" } }, | |
2168 | { INDEX_op_st32_i64, { "r", "r" } }, | |
2169 | { INDEX_op_st_i64, { "r", "r" } }, | |
2170 | ||
0db921e6 RH |
2171 | { INDEX_op_add_i64, { "r", "r", "ri" } }, |
2172 | { INDEX_op_sub_i64, { "r", "0", "ri" } }, | |
48bb3750 RH |
2173 | { INDEX_op_mul_i64, { "r", "0", "rK" } }, |
2174 | ||
2175 | { INDEX_op_div2_i64, { "b", "a", "0", "1", "r" } }, | |
2176 | { INDEX_op_divu2_i64, { "b", "a", "0", "1", "r" } }, | |
36017dc6 | 2177 | { INDEX_op_mulu2_i64, { "b", "a", "0", "r" } }, |
48bb3750 | 2178 | |
07ff7983 | 2179 | { INDEX_op_and_i64, { "r", "0", "ri" } }, |
48bb3750 RH |
2180 | { INDEX_op_or_i64, { "r", "0", "rO" } }, |
2181 | { INDEX_op_xor_i64, { "r", "0", "rX" } }, | |
2182 | ||
2183 | { INDEX_op_neg_i64, { "r", "r" } }, | |
2184 | ||
2185 | { INDEX_op_shl_i64, { "r", "r", "Ri" } }, | |
2186 | { INDEX_op_shr_i64, { "r", "r", "Ri" } }, | |
2187 | { INDEX_op_sar_i64, { "r", "r", "Ri" } }, | |
2188 | ||
2189 | { INDEX_op_rotl_i64, { "r", "r", "Ri" } }, | |
2190 | { INDEX_op_rotr_i64, { "r", "r", "Ri" } }, | |
2191 | ||
2192 | { INDEX_op_ext8s_i64, { "r", "r" } }, | |
2193 | { INDEX_op_ext8u_i64, { "r", "r" } }, | |
2194 | { INDEX_op_ext16s_i64, { "r", "r" } }, | |
2195 | { INDEX_op_ext16u_i64, { "r", "r" } }, | |
2196 | { INDEX_op_ext32s_i64, { "r", "r" } }, | |
2197 | { INDEX_op_ext32u_i64, { "r", "r" } }, | |
2198 | ||
2199 | { INDEX_op_bswap16_i64, { "r", "r" } }, | |
2200 | { INDEX_op_bswap32_i64, { "r", "r" } }, | |
2201 | { INDEX_op_bswap64_i64, { "r", "r" } }, | |
2202 | ||
3790b918 RH |
2203 | { INDEX_op_add2_i64, { "r", "r", "0", "1", "r", "r" } }, |
2204 | { INDEX_op_sub2_i64, { "r", "r", "0", "1", "r", "r" } }, | |
2205 | ||
48bb3750 RH |
2206 | { INDEX_op_brcond_i64, { "r", "rC" } }, |
2207 | { INDEX_op_setcond_i64, { "r", "r", "rC" } }, | |
96a9f093 | 2208 | { INDEX_op_movcond_i64, { "r", "r", "rC", "r", "0" } }, |
d5690ea4 | 2209 | { INDEX_op_deposit_i64, { "r", "0", "r" } }, |
48bb3750 RH |
2210 | |
2211 | { INDEX_op_qemu_ld32u, { "r", "L" } }, | |
2212 | { INDEX_op_qemu_ld32s, { "r", "L" } }, | |
48bb3750 RH |
2213 | |
2214 | { -1 }, | |
2215 | }; | |
2216 | ||
48bb3750 RH |
2217 | static void query_facilities(void) |
2218 | { | |
c9baa30f | 2219 | unsigned long hwcap = qemu_getauxval(AT_HWCAP); |
48bb3750 | 2220 | |
c9baa30f RH |
2221 | /* Is STORE FACILITY LIST EXTENDED available? Honestly, I believe this |
2222 | is present on all 64-bit systems, but let's check for it anyway. */ | |
2223 | if (hwcap & HWCAP_S390_STFLE) { | |
2224 | register int r0 __asm__("0"); | |
2225 | register void *r1 __asm__("1"); | |
48bb3750 | 2226 | |
c9baa30f RH |
2227 | /* stfle 0(%r1) */ |
2228 | r1 = &facilities; | |
2229 | asm volatile(".word 0xb2b0,0x1000" | |
2230 | : "=r"(r0) : "0"(0), "r"(r1) : "memory", "cc"); | |
48bb3750 RH |
2231 | } |
2232 | } | |
2233 | ||
2234 | static void tcg_target_init(TCGContext *s) | |
2827822e | 2235 | { |
48bb3750 RH |
2236 | query_facilities(); |
2237 | ||
2238 | tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff); | |
2239 | tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffff); | |
2240 | ||
2241 | tcg_regset_clear(tcg_target_call_clobber_regs); | |
2242 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R0); | |
2243 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R1); | |
2244 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R2); | |
2245 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R3); | |
2246 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R4); | |
2247 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R5); | |
2248 | /* The return register can be considered call-clobbered. */ | |
2249 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R14); | |
2250 | ||
2251 | tcg_regset_clear(s->reserved_regs); | |
2252 | tcg_regset_set_reg(s->reserved_regs, TCG_TMP0); | |
2253 | /* XXX many insns can't be used with R0, so we better avoid it for now */ | |
2254 | tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); | |
2255 | tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); | |
2256 | ||
2257 | tcg_add_target_add_op_defs(s390_op_defs); | |
2827822e AG |
2258 | } |
2259 | ||
48bb3750 | 2260 | static void tcg_target_qemu_prologue(TCGContext *s) |
2827822e | 2261 | { |
a4924e8b RH |
2262 | tcg_target_long frame_size; |
2263 | ||
48bb3750 RH |
2264 | /* stmg %r6,%r15,48(%r15) (save registers) */ |
2265 | tcg_out_insn(s, RXY, STMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, 48); | |
2266 | ||
a4924e8b RH |
2267 | /* aghi %r15,-frame_size */ |
2268 | frame_size = TCG_TARGET_CALL_STACK_OFFSET; | |
2269 | frame_size += TCG_STATIC_CALL_ARGS_SIZE; | |
2270 | frame_size += CPU_TEMP_BUF_NLONGS * sizeof(long); | |
2271 | tcg_out_insn(s, RI, AGHI, TCG_REG_R15, -frame_size); | |
2272 | ||
2273 | tcg_set_frame(s, TCG_REG_CALL_STACK, | |
2274 | TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET, | |
2275 | CPU_TEMP_BUF_NLONGS * sizeof(long)); | |
48bb3750 RH |
2276 | |
2277 | if (GUEST_BASE >= 0x80000) { | |
2278 | tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, GUEST_BASE); | |
2279 | tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); | |
2280 | } | |
2281 | ||
cea5f9a2 BS |
2282 | tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); |
2283 | /* br %r3 (go to TB) */ | |
2284 | tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, tcg_target_call_iarg_regs[1]); | |
48bb3750 RH |
2285 | |
2286 | tb_ret_addr = s->code_ptr; | |
2287 | ||
a4924e8b RH |
2288 | /* lmg %r6,%r15,fs+48(%r15) (restore registers) */ |
2289 | tcg_out_insn(s, RXY, LMG, TCG_REG_R6, TCG_REG_R15, TCG_REG_R15, | |
2290 | frame_size + 48); | |
48bb3750 RH |
2291 | |
2292 | /* br %r14 (return) */ | |
2293 | tcg_out_insn(s, RR, BCR, S390_CC_ALWAYS, TCG_REG_R14); | |
2827822e | 2294 | } |