1 /*
2 ** Definitions for MIPS CPUs.
3 ** Copyright (C) 2005-2021 Mike Pall. See Copyright Notice in luajit.h
4 */
5
6 #ifndef _LJ_TARGET_MIPS_H
7 #define _LJ_TARGET_MIPS_H
8
9 /* -- Registers IDs ------------------------------------------------------- */
10
11 #define GPRDEF(_) \
12 _(R0) _(R1) _(R2) _(R3) _(R4) _(R5) _(R6) _(R7) \
13 _(R8) _(R9) _(R10) _(R11) _(R12) _(R13) _(R14) _(R15) \
14 _(R16) _(R17) _(R18) _(R19) _(R20) _(R21) _(R22) _(R23) \
15 _(R24) _(R25) _(SYS1) _(SYS2) _(R28) _(SP) _(R30) _(RA)
16 #if LJ_SOFTFP
17 #define FPRDEF(_)
18 #else
19 #define FPRDEF(_) \
20 _(F0) _(F1) _(F2) _(F3) _(F4) _(F5) _(F6) _(F7) \
21 _(F8) _(F9) _(F10) _(F11) _(F12) _(F13) _(F14) _(F15) \
22 _(F16) _(F17) _(F18) _(F19) _(F20) _(F21) _(F22) _(F23) \
23 _(F24) _(F25) _(F26) _(F27) _(F28) _(F29) _(F30) _(F31)
24 #endif
25 #define VRIDDEF(_)
26
27 #define RIDENUM(name) RID_##name,
28
29 enum {
30 GPRDEF(RIDENUM) /* General-purpose registers (GPRs). */
31 FPRDEF(RIDENUM) /* Floating-point registers (FPRs). */
32 RID_MAX,
33 RID_ZERO = RID_R0,
34 RID_TMP = RID_RA,
35 RID_GP = RID_R28,
36
37 /* Calling conventions. */
38 RID_RET = RID_R2,
39 #if LJ_LE
40 RID_RETHI = RID_R3,
41 RID_RETLO = RID_R2,
42 #else
43 RID_RETHI = RID_R2,
44 RID_RETLO = RID_R3,
45 #endif
46 #if LJ_SOFTFP
47 RID_FPRET = RID_R2,
48 #else
49 RID_FPRET = RID_F0,
50 #endif
51 RID_CFUNCADDR = RID_R25,
52
53 /* These definitions must match with the *.dasc file(s): */
54 RID_BASE = RID_R16, /* Interpreter BASE. */
55 RID_LPC = RID_R18, /* Interpreter PC. */
56 RID_DISPATCH = RID_R19, /* Interpreter DISPATCH table. */
57 RID_LREG = RID_R20, /* Interpreter L. */
58 RID_JGL = RID_R30, /* On-trace: global_State + 32768. */
59
60 /* Register ranges [min, max) and number of registers. */
61 RID_MIN_GPR = RID_R0,
62 RID_MAX_GPR = RID_RA+1,
63 RID_MIN_FPR = RID_MAX_GPR,
64 #if LJ_SOFTFP
65 RID_MAX_FPR = RID_MIN_FPR,
66 #else
67 RID_MAX_FPR = RID_F31+1,
68 #endif
69 RID_NUM_GPR = RID_MAX_GPR - RID_MIN_GPR,
70 RID_NUM_FPR = RID_MAX_FPR - RID_MIN_FPR /* Only even regs are used. */
71 };
72
73 #define RID_NUM_KREF RID_NUM_GPR
74 #define RID_MIN_KREF RID_R0
75
76 /* -- Register sets ------------------------------------------------------- */
77
78 /* Make use of all registers, except ZERO, TMP, SP, SYS1, SYS2, JGL and GP. */
79 #define RSET_FIXED \
80 (RID2RSET(RID_ZERO)|RID2RSET(RID_TMP)|RID2RSET(RID_SP)|\
81 RID2RSET(RID_SYS1)|RID2RSET(RID_SYS2)|RID2RSET(RID_JGL)|RID2RSET(RID_GP))
82 #define RSET_GPR (RSET_RANGE(RID_MIN_GPR, RID_MAX_GPR) - RSET_FIXED)
83 #if LJ_SOFTFP
84 #define RSET_FPR 0
85 #else
86 #if LJ_32
87 #define RSET_FPR \
88 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\
89 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\
90 RID2RSET(RID_F16)|RID2RSET(RID_F18)|RID2RSET(RID_F20)|RID2RSET(RID_F22)|\
91 RID2RSET(RID_F24)|RID2RSET(RID_F26)|RID2RSET(RID_F28)|RID2RSET(RID_F30))
92 #else
93 #define RSET_FPR RSET_RANGE(RID_MIN_FPR, RID_MAX_FPR)
94 #endif
95 #endif
96 #define RSET_ALL (RSET_GPR|RSET_FPR)
97 #define RSET_INIT RSET_ALL
98
99 #define RSET_SCRATCH_GPR \
100 (RSET_RANGE(RID_R1, RID_R15+1)|\
101 RID2RSET(RID_R24)|RID2RSET(RID_R25))
102 #if LJ_SOFTFP
103 #define RSET_SCRATCH_FPR 0
104 #else
105 #if LJ_32
106 #define RSET_SCRATCH_FPR \
107 (RID2RSET(RID_F0)|RID2RSET(RID_F2)|RID2RSET(RID_F4)|RID2RSET(RID_F6)|\
108 RID2RSET(RID_F8)|RID2RSET(RID_F10)|RID2RSET(RID_F12)|RID2RSET(RID_F14)|\
109 RID2RSET(RID_F16)|RID2RSET(RID_F18))
110 #else
111 #define RSET_SCRATCH_FPR RSET_RANGE(RID_F0, RID_F24)
112 #endif
113 #endif
114 #define RSET_SCRATCH (RSET_SCRATCH_GPR|RSET_SCRATCH_FPR)
115 #define REGARG_FIRSTGPR RID_R4
116 #if LJ_32
117 #define REGARG_LASTGPR RID_R7
118 #define REGARG_NUMGPR 4
119 #else
120 #define REGARG_LASTGPR RID_R11
121 #define REGARG_NUMGPR 8
122 #endif
123 #if LJ_ABI_SOFTFP
124 #define REGARG_FIRSTFPR 0
125 #define REGARG_LASTFPR 0
126 #define REGARG_NUMFPR 0
127 #else
128 #define REGARG_FIRSTFPR RID_F12
129 #if LJ_32
130 #define REGARG_LASTFPR RID_F14
131 #define REGARG_NUMFPR 2
132 #else
133 #define REGARG_LASTFPR RID_F19
134 #define REGARG_NUMFPR 8
135 #endif
136 #endif
137
138 /* -- Spill slots --------------------------------------------------------- */
139
140 /* Spill slots are 32 bit wide. An even/odd pair is used for FPRs.
141 **
142 ** SPS_FIXED: Available fixed spill slots in interpreter frame.
143 ** This definition must match with the *.dasc file(s).
144 **
145 ** SPS_FIRST: First spill slot for general use.
146 */
147 #if LJ_32
148 #define SPS_FIXED 5
149 #else
150 #define SPS_FIXED 4
151 #endif
152 #define SPS_FIRST 4
153
154 #define SPOFS_TMP 0
155
156 #define sps_scale(slot) (4 * (int32_t)(slot))
157 #define sps_align(slot) (((slot) - SPS_FIXED + 1) & ~1)
158
159 /* -- Exit state ---------------------------------------------------------- */
160
161 /* This definition must match with the *.dasc file(s). */
162 typedef struct {
163 #if !LJ_SOFTFP
164 lua_Number fpr[RID_NUM_FPR]; /* Floating-point registers. */
165 #endif
166 intptr_t gpr[RID_NUM_GPR]; /* General-purpose registers. */
167 int32_t spill[256]; /* Spill slots. */
168 } ExitState;
169
170 /* Highest exit + 1 indicates stack check. */
171 #define EXITSTATE_CHECKEXIT 1
172
173 /* Return the address of a per-trace exit stub. */
exitstub_trace_addr_(uint32_t * p)174 static LJ_AINLINE uint32_t *exitstub_trace_addr_(uint32_t *p)
175 {
176 while (*p == 0x00000000) p++; /* Skip MIPSI_NOP. */
177 return p;
178 }
179 /* Avoid dependence on lj_jit.h if only including lj_target.h. */
180 #define exitstub_trace_addr(T, exitno) \
181 exitstub_trace_addr_((MCode *)((char *)(T)->mcode + (T)->szmcode))
182
183 /* -- Instructions -------------------------------------------------------- */
184
185 /* Instruction fields. */
186 #define MIPSF_S(r) ((r) << 21)
187 #define MIPSF_T(r) ((r) << 16)
188 #define MIPSF_D(r) ((r) << 11)
189 #define MIPSF_R(r) ((r) << 21)
190 #define MIPSF_H(r) ((r) << 16)
191 #define MIPSF_G(r) ((r) << 11)
192 #define MIPSF_F(r) ((r) << 6)
193 #define MIPSF_A(n) ((n) << 6)
194 #define MIPSF_M(n) ((n) << 11)
195 #define MIPSF_L(n) ((n) << 6)
196
197 typedef enum MIPSIns {
198 MIPSI_D = 0x38,
199 MIPSI_DV = 0x10,
200 MIPSI_D32 = 0x3c,
201 /* Integer instructions. */
202 MIPSI_MOVE = 0x00000025,
203 MIPSI_NOP = 0x00000000,
204
205 MIPSI_LI = 0x24000000,
206 MIPSI_LU = 0x34000000,
207 MIPSI_LUI = 0x3c000000,
208
209 MIPSI_AND = 0x00000024,
210 MIPSI_ANDI = 0x30000000,
211 MIPSI_OR = 0x00000025,
212 MIPSI_ORI = 0x34000000,
213 MIPSI_XOR = 0x00000026,
214 MIPSI_XORI = 0x38000000,
215 MIPSI_NOR = 0x00000027,
216
217 MIPSI_SLT = 0x0000002a,
218 MIPSI_SLTU = 0x0000002b,
219 MIPSI_SLTI = 0x28000000,
220 MIPSI_SLTIU = 0x2c000000,
221
222 MIPSI_ADDU = 0x00000021,
223 MIPSI_ADDIU = 0x24000000,
224 MIPSI_SUB = 0x00000022,
225 MIPSI_SUBU = 0x00000023,
226
227 #if !LJ_TARGET_MIPSR6
228 MIPSI_MUL = 0x70000002,
229 MIPSI_DIV = 0x0000001a,
230 MIPSI_DIVU = 0x0000001b,
231
232 MIPSI_MOVZ = 0x0000000a,
233 MIPSI_MOVN = 0x0000000b,
234 MIPSI_MFHI = 0x00000010,
235 MIPSI_MFLO = 0x00000012,
236 MIPSI_MULT = 0x00000018,
237 #else
238 MIPSI_MUL = 0x00000098,
239 MIPSI_MUH = 0x000000d8,
240 MIPSI_DIV = 0x0000009a,
241 MIPSI_DIVU = 0x0000009b,
242
243 MIPSI_SELEQZ = 0x00000035,
244 MIPSI_SELNEZ = 0x00000037,
245 #endif
246
247 MIPSI_SLL = 0x00000000,
248 MIPSI_SRL = 0x00000002,
249 MIPSI_SRA = 0x00000003,
250 MIPSI_ROTR = 0x00200002, /* MIPSXXR2 */
251 MIPSI_DROTR = 0x0020003a,
252 MIPSI_DROTR32 = 0x0020003e,
253 MIPSI_SLLV = 0x00000004,
254 MIPSI_SRLV = 0x00000006,
255 MIPSI_SRAV = 0x00000007,
256 MIPSI_ROTRV = 0x00000046, /* MIPSXXR2 */
257 MIPSI_DROTRV = 0x00000056,
258
259 MIPSI_INS = 0x7c000004, /* MIPSXXR2 */
260
261 MIPSI_SEB = 0x7c000420, /* MIPSXXR2 */
262 MIPSI_SEH = 0x7c000620, /* MIPSXXR2 */
263 MIPSI_WSBH = 0x7c0000a0, /* MIPSXXR2 */
264 MIPSI_DSBH = 0x7c0000a4,
265
266 MIPSI_B = 0x10000000,
267 MIPSI_J = 0x08000000,
268 MIPSI_JAL = 0x0c000000,
269 #if !LJ_TARGET_MIPSR6
270 MIPSI_JALX = 0x74000000,
271 MIPSI_JR = 0x00000008,
272 #else
273 MIPSI_JR = 0x00000009,
274 MIPSI_BALC = 0xe8000000,
275 #endif
276 MIPSI_JALR = 0x0000f809,
277
278 MIPSI_BEQ = 0x10000000,
279 MIPSI_BNE = 0x14000000,
280 MIPSI_BLEZ = 0x18000000,
281 MIPSI_BGTZ = 0x1c000000,
282 MIPSI_BLTZ = 0x04000000,
283 MIPSI_BGEZ = 0x04010000,
284
285 /* Load/store instructions. */
286 MIPSI_LW = 0x8c000000,
287 MIPSI_LD = 0xdc000000,
288 MIPSI_SW = 0xac000000,
289 MIPSI_SD = 0xfc000000,
290 MIPSI_LB = 0x80000000,
291 MIPSI_SB = 0xa0000000,
292 MIPSI_LH = 0x84000000,
293 MIPSI_SH = 0xa4000000,
294 MIPSI_LBU = 0x90000000,
295 MIPSI_LHU = 0x94000000,
296 MIPSI_LWC1 = 0xc4000000,
297 MIPSI_SWC1 = 0xe4000000,
298 MIPSI_LDC1 = 0xd4000000,
299 MIPSI_SDC1 = 0xf4000000,
300
301 /* MIPS64 instructions. */
302 MIPSI_DADD = 0x0000002c,
303 MIPSI_DADDU = 0x0000002d,
304 MIPSI_DADDIU = 0x64000000,
305 MIPSI_DSUB = 0x0000002e,
306 MIPSI_DSUBU = 0x0000002f,
307 #if !LJ_TARGET_MIPSR6
308 MIPSI_DDIV = 0x0000001e,
309 MIPSI_DDIVU = 0x0000001f,
310 MIPSI_DMULT = 0x0000001c,
311 MIPSI_DMULTU = 0x0000001d,
312 #else
313 MIPSI_DDIV = 0x0000009e,
314 MIPSI_DMOD = 0x000000de,
315 MIPSI_DDIVU = 0x0000009f,
316 MIPSI_DMODU = 0x000000df,
317 MIPSI_DMUL = 0x0000009c,
318 MIPSI_DMUH = 0x000000dc,
319 #endif
320
321 MIPSI_DSLL = 0x00000038,
322 MIPSI_DSRL = 0x0000003a,
323 MIPSI_DSLLV = 0x00000014,
324 MIPSI_DSRLV = 0x00000016,
325 MIPSI_DSRA = 0x0000003b,
326 MIPSI_DSRAV = 0x00000017,
327 MIPSI_DSRA32 = 0x0000003f,
328 MIPSI_DSLL32 = 0x0000003c,
329 MIPSI_DSRL32 = 0x0000003e,
330 MIPSI_DSHD = 0x7c000164,
331
332 MIPSI_AADDU = LJ_32 ? MIPSI_ADDU : MIPSI_DADDU,
333 MIPSI_AADDIU = LJ_32 ? MIPSI_ADDIU : MIPSI_DADDIU,
334 MIPSI_ASUBU = LJ_32 ? MIPSI_SUBU : MIPSI_DSUBU,
335 MIPSI_AL = LJ_32 ? MIPSI_LW : MIPSI_LD,
336 MIPSI_AS = LJ_32 ? MIPSI_SW : MIPSI_SD,
337 #if LJ_TARGET_MIPSR6
338 MIPSI_LSA = 0x00000005,
339 MIPSI_DLSA = 0x00000015,
340 MIPSI_ALSA = LJ_32 ? MIPSI_LSA : MIPSI_DLSA,
341 #endif
342
343 /* Extract/insert instructions. */
344 MIPSI_DEXTM = 0x7c000001,
345 MIPSI_DEXTU = 0x7c000002,
346 MIPSI_DEXT = 0x7c000003,
347 MIPSI_DINSM = 0x7c000005,
348 MIPSI_DINSU = 0x7c000006,
349 MIPSI_DINS = 0x7c000007,
350
351 MIPSI_FLOOR_D = 0x4620000b,
352
353 /* FP instructions. */
354 MIPSI_MOV_S = 0x46000006,
355 MIPSI_MOV_D = 0x46200006,
356 #if !LJ_TARGET_MIPSR6
357 MIPSI_MOVT_D = 0x46210011,
358 MIPSI_MOVF_D = 0x46200011,
359 #else
360 MIPSI_MIN_D = 0x4620001C,
361 MIPSI_MAX_D = 0x4620001E,
362 MIPSI_SEL_D = 0x46200010,
363 #endif
364
365 MIPSI_ABS_D = 0x46200005,
366 MIPSI_NEG_D = 0x46200007,
367
368 MIPSI_ADD_D = 0x46200000,
369 MIPSI_SUB_D = 0x46200001,
370 MIPSI_MUL_D = 0x46200002,
371 MIPSI_DIV_D = 0x46200003,
372 MIPSI_SQRT_D = 0x46200004,
373
374 MIPSI_ADD_S = 0x46000000,
375 MIPSI_SUB_S = 0x46000001,
376
377 MIPSI_CVT_D_S = 0x46000021,
378 MIPSI_CVT_W_S = 0x46000024,
379 MIPSI_CVT_S_D = 0x46200020,
380 MIPSI_CVT_W_D = 0x46200024,
381 MIPSI_CVT_S_W = 0x46800020,
382 MIPSI_CVT_D_W = 0x46800021,
383 MIPSI_CVT_S_L = 0x46a00020,
384 MIPSI_CVT_D_L = 0x46a00021,
385
386 MIPSI_TRUNC_W_S = 0x4600000d,
387 MIPSI_TRUNC_W_D = 0x4620000d,
388 MIPSI_TRUNC_L_S = 0x46000009,
389 MIPSI_TRUNC_L_D = 0x46200009,
390 MIPSI_FLOOR_W_S = 0x4600000f,
391 MIPSI_FLOOR_W_D = 0x4620000f,
392
393 MIPSI_MFC1 = 0x44000000,
394 MIPSI_MTC1 = 0x44800000,
395 MIPSI_DMTC1 = 0x44a00000,
396 MIPSI_DMFC1 = 0x44200000,
397
398 #if !LJ_TARGET_MIPSR6
399 MIPSI_BC1F = 0x45000000,
400 MIPSI_BC1T = 0x45010000,
401 MIPSI_C_EQ_D = 0x46200032,
402 MIPSI_C_OLT_S = 0x46000034,
403 MIPSI_C_OLT_D = 0x46200034,
404 MIPSI_C_ULT_D = 0x46200035,
405 MIPSI_C_OLE_D = 0x46200036,
406 MIPSI_C_ULE_D = 0x46200037,
407 #else
408 MIPSI_BC1EQZ = 0x45200000,
409 MIPSI_BC1NEZ = 0x45a00000,
410 MIPSI_CMP_EQ_D = 0x46a00002,
411 MIPSI_CMP_LT_S = 0x46800004,
412 MIPSI_CMP_LT_D = 0x46a00004,
413 #endif
414
415 } MIPSIns;
416
417 #endif
418