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drc: some renaming
[picodrive.git] / cpu / drc / emit_arm.c
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1/*
2 * Basic macros to emit ARM instructions and some utils
3 * Copyright (C) 2008,2009,2010 notaz
4 *
5 * This work is licensed under the terms of MAME license.
6 * See COPYING file in the top-level directory.
7 */
8#define CONTEXT_REG 11
9
10// XXX: tcache_ptr type for SVP and SH2 compilers differs..
11#define EMIT_PTR(ptr, x) \
12 do { \
13 *(u32 *)ptr = x; \
14 ptr = (void *)((u8 *)ptr + sizeof(u32)); \
15 COUNT_OP; \
16 } while (0)
17
18#define EMIT(x) EMIT_PTR(tcache_ptr, x)
19
20#define A_R4M (1 << 4)
21#define A_R5M (1 << 5)
22#define A_R6M (1 << 6)
23#define A_R7M (1 << 7)
24#define A_R8M (1 << 8)
25#define A_R9M (1 << 9)
26#define A_R10M (1 << 10)
27#define A_R11M (1 << 11)
28#define A_R14M (1 << 14)
29#define A_R15M (1 << 15)
30
31#define A_COND_AL 0xe
32#define A_COND_EQ 0x0
33#define A_COND_NE 0x1
34#define A_COND_HS 0x2
35#define A_COND_LO 0x3
36#define A_COND_MI 0x4
37#define A_COND_PL 0x5
38#define A_COND_VS 0x6
39#define A_COND_VC 0x7
40#define A_COND_HI 0x8
41#define A_COND_LS 0x9
42#define A_COND_GE 0xa
43#define A_COND_LT 0xb
44#define A_COND_GT 0xc
45#define A_COND_LE 0xd
46#define A_COND_CS A_COND_HS
47#define A_COND_CC A_COND_LO
48
49/* unified conditions */
50#define DCOND_EQ A_COND_EQ
51#define DCOND_NE A_COND_NE
52#define DCOND_MI A_COND_MI
53#define DCOND_PL A_COND_PL
54#define DCOND_HI A_COND_HI
55#define DCOND_HS A_COND_HS
56#define DCOND_LO A_COND_LO
57#define DCOND_GE A_COND_GE
58#define DCOND_GT A_COND_GT
59#define DCOND_LT A_COND_LT
60#define DCOND_LS A_COND_LS
61#define DCOND_LE A_COND_LE
62#define DCOND_VS A_COND_VS
63#define DCOND_VC A_COND_VC
64
65/* addressing mode 1 */
66#define A_AM1_LSL 0
67#define A_AM1_LSR 1
68#define A_AM1_ASR 2
69#define A_AM1_ROR 3
70
71#define A_AM1_IMM(ror2,imm8) (((ror2)<<8) | (imm8) | 0x02000000)
72#define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) | ((shift_op)<<5) | (rm))
73#define A_AM1_REG_XREG(rs,shift_op,rm) (((rs)<<8) | ((shift_op)<<5) | 0x10 | (rm))
74
75/* data processing op */
76#define A_OP_AND 0x0
77#define A_OP_EOR 0x1
78#define A_OP_SUB 0x2
79#define A_OP_RSB 0x3
80#define A_OP_ADD 0x4
81#define A_OP_ADC 0x5
82#define A_OP_SBC 0x6
83#define A_OP_RSC 0x7
84#define A_OP_TST 0x8
85#define A_OP_TEQ 0x9
86#define A_OP_CMP 0xa
87#define A_OP_CMN 0xa
88#define A_OP_ORR 0xc
89#define A_OP_MOV 0xd
90#define A_OP_BIC 0xe
91#define A_OP_MVN 0xf
92
93#define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \
94 EMIT(((cond)<<28) | ((op)<< 21) | ((s)<<20) | ((rn)<<16) | ((rd)<<12) | (shifter_op))
95
96#define EOP_C_DOP_IMM( cond,op,s,rn,rd,ror2,imm8) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_IMM(ror2,imm8))
97#define EOP_C_DOP_REG_XIMM(cond,op,s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XIMM(shift_imm,shift_op,rm))
98#define EOP_C_DOP_REG_XREG(cond,op,s,rn,rd,rs, shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XREG(rs, shift_op,rm))
99
100#define EOP_MOV_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,0, 0,rd,ror2,imm8)
101#define EOP_MVN_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MVN,0, 0,rd,ror2,imm8)
102#define EOP_ORR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,0,rn,rd,ror2,imm8)
103#define EOP_EOR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_EOR,0,rn,rd,ror2,imm8)
104#define EOP_ADD_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ADD,0,rn,rd,ror2,imm8)
105#define EOP_BIC_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_BIC,0,rn,rd,ror2,imm8)
106#define EOP_AND_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,0,rn,rd,ror2,imm8)
107#define EOP_SUB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_SUB,0,rn,rd,ror2,imm8)
108#define EOP_TST_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_TST,1,rn, 0,ror2,imm8)
109#define EOP_CMP_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_CMP,1,rn, 0,ror2,imm8)
110#define EOP_RSB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_RSB,0,rn,rd,ror2,imm8)
111
112#define EOP_MOV_IMM_C(cond,rd, ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_MOV,0, 0,rd,ror2,imm8)
113#define EOP_ORR_IMM_C(cond,rd,rn,ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_ORR,0,rn,rd,ror2,imm8)
114#define EOP_RSB_IMM_C(cond,rd,rn,ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_RSB,0,rn,rd,ror2,imm8)
115
116#define EOP_MOV_REG(cond,s,rd, rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm)
117#define EOP_MVN_REG(cond,s,rd, rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_MVN,s, 0,rd,shift_imm,shift_op,rm)
118#define EOP_ORR_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ORR,s,rn,rd,shift_imm,shift_op,rm)
119#define EOP_ADD_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ADD,s,rn,rd,shift_imm,shift_op,rm)
120#define EOP_ADC_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ADC,s,rn,rd,shift_imm,shift_op,rm)
121#define EOP_SUB_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_SUB,s,rn,rd,shift_imm,shift_op,rm)
122#define EOP_SBC_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_SBC,s,rn,rd,shift_imm,shift_op,rm)
123#define EOP_AND_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_AND,s,rn,rd,shift_imm,shift_op,rm)
124#define EOP_EOR_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_EOR,s,rn,rd,shift_imm,shift_op,rm)
125#define EOP_CMP_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_CMP,1,rn, 0,shift_imm,shift_op,rm)
126#define EOP_TST_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_TST,1,rn, 0,shift_imm,shift_op,rm)
127#define EOP_TEQ_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_TEQ,1,rn, 0,shift_imm,shift_op,rm)
128
129#define EOP_MOV_REG2(s,rd, rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_MOV,s, 0,rd,rs,shift_op,rm)
130#define EOP_ADD_REG2(s,rd,rn,rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_ADD,s,rn,rd,rs,shift_op,rm)
131#define EOP_SUB_REG2(s,rd,rn,rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_SUB,s,rn,rd,rs,shift_op,rm)
132
133#define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSL,0)
134#define EOP_MOV_REG_LSL(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSL,shift_imm)
135#define EOP_MOV_REG_LSR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSR,shift_imm)
136#define EOP_MOV_REG_ASR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_ASR,shift_imm)
137#define EOP_MOV_REG_ROR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_ROR,shift_imm)
138
139#define EOP_ORR_REG_SIMPLE(rd,rm) EOP_ORR_REG(A_COND_AL,0,rd,rd,rm,A_AM1_LSL,0)
140#define EOP_ORR_REG_LSL(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSL,shift_imm)
141#define EOP_ORR_REG_LSR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSR,shift_imm)
142#define EOP_ORR_REG_ASR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_ASR,shift_imm)
143#define EOP_ORR_REG_ROR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_ROR,shift_imm)
144
145#define EOP_ADD_REG_SIMPLE(rd,rm) EOP_ADD_REG(A_COND_AL,0,rd,rd,rm,A_AM1_LSL,0)
146#define EOP_ADD_REG_LSL(rd,rn,rm,shift_imm) EOP_ADD_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSL,shift_imm)
147#define EOP_ADD_REG_LSR(rd,rn,rm,shift_imm) EOP_ADD_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSR,shift_imm)
148
149#define EOP_TST_REG_SIMPLE(rn,rm) EOP_TST_REG(A_COND_AL, rn, 0,A_AM1_LSL,rm)
150
151#define EOP_MOV_REG2_LSL(rd, rm,rs) EOP_MOV_REG2(0,rd, rm,A_AM1_LSL,rs)
152#define EOP_MOV_REG2_ROR(rd, rm,rs) EOP_MOV_REG2(0,rd, rm,A_AM1_ROR,rs)
153#define EOP_ADD_REG2_LSL(rd,rn,rm,rs) EOP_ADD_REG2(0,rd,rn,rm,A_AM1_LSL,rs)
154#define EOP_SUB_REG2_LSL(rd,rn,rm,rs) EOP_SUB_REG2(0,rd,rn,rm,A_AM1_LSL,rs)
155
156/* addressing mode 2 */
157#define EOP_C_AM2_IMM(cond,u,b,l,rn,rd,offset_12) \
158 EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12))
159
160#define EOP_C_AM2_REG(cond,u,b,l,rn,rd,shift_imm,shift_op,rm) \
161 EMIT(((cond)<<28) | 0x07000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | \
162 ((shift_imm)<<7) | ((shift_op)<<5) | (rm))
163
164/* addressing mode 3 */
165#define EOP_C_AM3(cond,u,r,l,rn,rd,s,h,immed_reg) \
166 EMIT(((cond)<<28) | 0x01000090 | ((u)<<23) | ((r)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | \
167 ((s)<<6) | ((h)<<5) | (immed_reg))
168
169#define EOP_C_AM3_IMM(cond,u,l,rn,rd,s,h,offset_8) EOP_C_AM3(cond,u,1,l,rn,rd,s,h,(((offset_8)&0xf0)<<4)|((offset_8)&0xf))
170
171#define EOP_C_AM3_REG(cond,u,l,rn,rd,s,h,rm) EOP_C_AM3(cond,u,0,l,rn,rd,s,h,rm)
172
173/* ldr and str */
174#define EOP_LDR_IMM2(cond,rd,rn,offset_12) EOP_C_AM2_IMM(cond,1,0,1,rn,rd,offset_12)
175#define EOP_LDRB_IMM2(cond,rd,rn,offset_12) EOP_C_AM2_IMM(cond,1,1,1,rn,rd,offset_12)
176
177#define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,offset_12)
178#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,0,0,1,rn,rd,offset_12)
179#define EOP_LDR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,0)
180#define EOP_STR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,offset_12)
181#define EOP_STR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,0)
182
183#define EOP_LDR_REG_LSL(cond,rd,rn,rm,shift_imm) EOP_C_AM2_REG(cond,1,0,1,rn,rd,shift_imm,A_AM1_LSL,rm)
184
185#define EOP_LDRH_IMM2(cond,rd,rn,offset_8) EOP_C_AM3_IMM(cond,1,1,rn,rd,0,1,offset_8)
186
187#define EOP_LDRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,offset_8)
188#define EOP_LDRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,0)
189#define EOP_LDRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,1,rn,rd,0,1,rm)
190#define EOP_STRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,offset_8)
191#define EOP_STRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,0)
192#define EOP_STRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,0,rn,rd,0,1,rm)
193
194/* ldm and stm */
195#define EOP_XXM(cond,p,u,s,w,l,rn,list) \
196 EMIT(((cond)<<28) | (1<<27) | ((p)<<24) | ((u)<<23) | ((s)<<22) | ((w)<<21) | ((l)<<20) | ((rn)<<16) | (list))
197
198#define EOP_STMIA(rb,list) EOP_XXM(A_COND_AL,0,1,0,0,0,rb,list)
199#define EOP_LDMIA(rb,list) EOP_XXM(A_COND_AL,0,1,0,0,1,rb,list)
200
201#define EOP_STMFD_SP(list) EOP_XXM(A_COND_AL,1,0,0,1,0,13,list)
202#define EOP_LDMFD_SP(list) EOP_XXM(A_COND_AL,0,1,0,1,1,13,list)
203
204/* branches */
205#define EOP_C_BX(cond,rm) \
206 EMIT(((cond)<<28) | 0x012fff10 | (rm))
207
208#define EOP_C_B_PTR(ptr,cond,l,signed_immed_24) \
209 EMIT_PTR(ptr, ((cond)<<28) | 0x0a000000 | ((l)<<24) | (signed_immed_24))
210
211#define EOP_C_B(cond,l,signed_immed_24) \
212 EOP_C_B_PTR(tcache_ptr,cond,l,signed_immed_24)
213
214#define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24)
215#define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24)
216
217/* misc */
218#define EOP_C_MUL(cond,s,rd,rs,rm) \
219 EMIT(((cond)<<28) | ((s)<<20) | ((rd)<<16) | ((rs)<<8) | 0x90 | (rm))
220
221#define EOP_C_UMULL(cond,s,rdhi,rdlo,rs,rm) \
222 EMIT(((cond)<<28) | 0x00800000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
223
224#define EOP_C_SMULL(cond,s,rdhi,rdlo,rs,rm) \
225 EMIT(((cond)<<28) | 0x00c00000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
226
227#define EOP_C_SMLAL(cond,s,rdhi,rdlo,rs,rm) \
228 EMIT(((cond)<<28) | 0x00e00000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
229
230#define EOP_MUL(rd,rm,rs) EOP_C_MUL(A_COND_AL,0,rd,rs,rm) // note: rd != rm
231
232#define EOP_C_MRS(cond,rd) \
233 EMIT(((cond)<<28) | 0x010f0000 | ((rd)<<12))
234
235#define EOP_C_MSR_IMM(cond,ror2,imm) \
236 EMIT(((cond)<<28) | 0x0328f000 | ((ror2)<<8) | (imm)) // cpsr_f
237
238#define EOP_C_MSR_REG(cond,rm) \
239 EMIT(((cond)<<28) | 0x0128f000 | (rm)) // cpsr_f
240
241#define EOP_MRS(rd) EOP_C_MRS(A_COND_AL,rd)
242#define EOP_MSR_IMM(ror2,imm) EOP_C_MSR_IMM(A_COND_AL,ror2,imm)
243#define EOP_MSR_REG(rm) EOP_C_MSR_REG(A_COND_AL,rm)
244
245
246// XXX: AND, RSB, *C, will break if 1 insn is not enough
247static void emith_op_imm2(int cond, int s, int op, int rd, int rn, unsigned int imm)
248{
249 int ror2;
250 u32 v;
251
252 switch (op) {
253 case A_OP_MOV:
254 rn = 0;
255 if (~imm < 0x10000) {
256 imm = ~imm;
257 op = A_OP_MVN;
258 }
259 break;
260
261 case A_OP_EOR:
262 case A_OP_SUB:
263 case A_OP_ADD:
264 case A_OP_ORR:
265 case A_OP_BIC:
266 if (s == 0 && imm == 0)
267 return;
268 break;
269 }
270
271 for (v = imm, ror2 = 0; ; ror2 -= 8/2) {
272 /* shift down to get 'best' rot2 */
273 for (; v && !(v & 3); v >>= 2)
274 ror2--;
275
276 EOP_C_DOP_IMM(cond, op, s, rn, rd, ror2 & 0x0f, v & 0xff);
277
278 v >>= 8;
279 if (v == 0)
280 break;
281 if (op == A_OP_MOV)
282 op = A_OP_ORR;
283 if (op == A_OP_MVN)
284 op = A_OP_BIC;
285 rn = rd;
286 }
287}
288
289#define emith_op_imm(cond, s, op, r, imm) \
290 emith_op_imm2(cond, s, op, r, r, imm)
291
292// test op
293#define emith_top_imm(cond, op, r, imm) do { \
294 u32 ror2, v; \
295 for (ror2 = 0, v = imm; v && !(v & 3); v >>= 2) \
296 ror2--; \
297 EOP_C_DOP_IMM(cond, op, 1, r, 0, ror2 & 0x0f, v & 0xff); \
298} while (0)
299
300#define is_offset_24(val) \
301 ((val) >= (int)0xff000000 && (val) <= 0x00ffffff)
302
303static int emith_xbranch(int cond, void *target, int is_call)
304{
305 int val = (u32 *)target - (u32 *)tcache_ptr - 2;
306 int direct = is_offset_24(val);
307 u32 *start_ptr = (u32 *)tcache_ptr;
308
309 if (direct)
310 {
311 EOP_C_B(cond,is_call,val & 0xffffff); // b, bl target
312 }
313 else
314 {
315#ifdef __EPOC32__
316// elprintf(EL_SVP, "emitting indirect jmp %08x->%08x", tcache_ptr, target);
317 if (is_call)
318 EOP_ADD_IMM(14,15,0,8); // add lr,pc,#8
319 EOP_C_AM2_IMM(cond,1,0,1,15,15,0); // ldrcc pc,[pc]
320 EOP_MOV_REG_SIMPLE(15,15); // mov pc, pc
321 EMIT((u32)target);
322#else
323 // should never happen
324 elprintf(EL_STATUS|EL_SVP|EL_ANOMALY, "indirect jmp %08x->%08x", target, tcache_ptr);
325 exit(1);
326#endif
327 }
328
329 return (u32 *)tcache_ptr - start_ptr;
330}
331
332#define JMP_POS(ptr) \
333 ptr = tcache_ptr; \
334 tcache_ptr += sizeof(u32)
335
336#define JMP_EMIT(cond, ptr) { \
337 u32 val_ = (u32 *)tcache_ptr - (u32 *)(ptr) - 2; \
338 EOP_C_B_PTR(ptr, cond, 0, val_ & 0xffffff); \
339}
340
341#define EMITH_JMP_START(cond) { \
342 void *cond_ptr; \
343 JMP_POS(cond_ptr)
344
345#define EMITH_JMP_END(cond) \
346 JMP_EMIT(cond, cond_ptr); \
347}
348
349// fake "simple" or "short" jump - using cond insns instead
350#define EMITH_NOTHING1(cond) \
351 (void)(cond)
352
353#define EMITH_SJMP_START(cond) EMITH_NOTHING1(cond)
354#define EMITH_SJMP_END(cond) EMITH_NOTHING1(cond)
355#define EMITH_SJMP3_START(cond) EMITH_NOTHING1(cond)
356#define EMITH_SJMP3_MID(cond) EMITH_NOTHING1(cond)
357#define EMITH_SJMP3_END()
358
359#define emith_move_r_r(d, s) \
360 EOP_MOV_REG_SIMPLE(d, s)
361
362#define emith_mvn_r_r(d, s) \
363 EOP_MVN_REG(A_COND_AL,0,d,s,A_AM1_LSL,0)
364
365#define emith_or_r_r_r_lsl(d, s1, s2, lslimm) \
366 EOP_ORR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
367
368#define emith_eor_r_r_r_lsl(d, s1, s2, lslimm) \
369 EOP_EOR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
370
371#define emith_eor_r_r_r_lsr(d, s1, s2, lsrimm) \
372 EOP_EOR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSR,lsrimm)
373
374#define emith_or_r_r_lsl(d, s, lslimm) \
375 emith_or_r_r_r_lsl(d, d, s, lslimm)
376
377#define emith_eor_r_r_lsr(d, s, lsrimm) \
378 emith_eor_r_r_r_lsr(d, d, s, lsrimm)
379
380#define emith_or_r_r_r(d, s1, s2) \
381 emith_or_r_r_r_lsl(d, s1, s2, 0)
382
383#define emith_eor_r_r_r(d, s1, s2) \
384 emith_eor_r_r_r_lsl(d, s1, s2, 0)
385
386#define emith_add_r_r(d, s) \
387 EOP_ADD_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
388
389#define emith_sub_r_r(d, s) \
390 EOP_SUB_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
391
392#define emith_adc_r_r(d, s) \
393 EOP_ADC_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
394
395#define emith_and_r_r(d, s) \
396 EOP_AND_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
397
398#define emith_or_r_r(d, s) \
399 emith_or_r_r_r(d, d, s)
400
401#define emith_eor_r_r(d, s) \
402 emith_eor_r_r_r(d, d, s)
403
404#define emith_tst_r_r(d, s) \
405 EOP_TST_REG(A_COND_AL,d,s,A_AM1_LSL,0)
406
407#define emith_teq_r_r(d, s) \
408 EOP_TEQ_REG(A_COND_AL,d,s,A_AM1_LSL,0)
409
410#define emith_cmp_r_r(d, s) \
411 EOP_CMP_REG(A_COND_AL,d,s,A_AM1_LSL,0)
412
413#define emith_addf_r_r(d, s) \
414 EOP_ADD_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
415
416#define emith_subf_r_r(d, s) \
417 EOP_SUB_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
418
419#define emith_adcf_r_r(d, s) \
420 EOP_ADC_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
421
422#define emith_sbcf_r_r(d, s) \
423 EOP_SBC_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
424
425#define emith_eorf_r_r(d, s) \
426 EOP_EOR_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
427
428#define emith_move_r_imm(r, imm) \
429 emith_op_imm(A_COND_AL, 0, A_OP_MOV, r, imm)
430
431#define emith_add_r_imm(r, imm) \
432 emith_op_imm(A_COND_AL, 0, A_OP_ADD, r, imm)
433
434#define emith_adc_r_imm(r, imm) \
435 emith_op_imm(A_COND_AL, 0, A_OP_ADC, r, imm)
436
437#define emith_sub_r_imm(r, imm) \
438 emith_op_imm(A_COND_AL, 0, A_OP_SUB, r, imm)
439
440#define emith_bic_r_imm(r, imm) \
441 emith_op_imm(A_COND_AL, 0, A_OP_BIC, r, imm)
442
443#define emith_and_r_imm(r, imm) \
444 emith_op_imm(A_COND_AL, 0, A_OP_AND, r, imm)
445
446#define emith_or_r_imm(r, imm) \
447 emith_op_imm(A_COND_AL, 0, A_OP_ORR, r, imm)
448
449#define emith_eor_r_imm(r, imm) \
450 emith_op_imm(A_COND_AL, 0, A_OP_EOR, r, imm)
451
452// note: only use 8bit imm for these
453#define emith_tst_r_imm(r, imm) \
454 emith_top_imm(A_COND_AL, A_OP_TST, r, imm)
455
456#define emith_cmp_r_imm(r, imm) { \
457 u32 op = A_OP_CMP, imm_ = imm; \
458 if (~imm_ < 0x100) { \
459 imm_ = ~imm_; \
460 op = A_OP_CMN; \
461 } \
462 emith_top_imm(A_COND_AL, op, r, imm); \
463}
464
465#define emith_subf_r_imm(r, imm) \
466 emith_op_imm(A_COND_AL, 1, A_OP_SUB, r, imm)
467
468#define emith_move_r_imm_c(cond, r, imm) \
469 emith_op_imm(cond, 0, A_OP_MOV, r, imm)
470
471#define emith_add_r_imm_c(cond, r, imm) \
472 emith_op_imm(cond, 0, A_OP_ADD, r, imm)
473
474#define emith_sub_r_imm_c(cond, r, imm) \
475 emith_op_imm(cond, 0, A_OP_SUB, r, imm)
476
477#define emith_or_r_imm_c(cond, r, imm) \
478 emith_op_imm(cond, 0, A_OP_ORR, r, imm)
479
480#define emith_eor_r_imm_c(cond, r, imm) \
481 emith_op_imm(cond, 0, A_OP_EOR, r, imm)
482
483#define emith_bic_r_imm_c(cond, r, imm) \
484 emith_op_imm(cond, 0, A_OP_BIC, r, imm)
485
486#define emith_move_r_imm_s8(r, imm) { \
487 if ((imm) & 0x80) \
488 EOP_MVN_IMM(r, 0, ((imm) ^ 0xff)); \
489 else \
490 EOP_MOV_IMM(r, 0, imm); \
491}
492
493#define emith_and_r_r_imm(d, s, imm) \
494 emith_op_imm2(A_COND_AL, 0, A_OP_AND, d, s, imm)
495
496#define emith_add_r_r_imm(d, s, imm) \
497 emith_op_imm2(A_COND_AL, 0, A_OP_ADD, d, s, imm)
498
499#define emith_sub_r_r_imm(d, s, imm) \
500 emith_op_imm2(A_COND_AL, 0, A_OP_SUB, d, s, imm)
501
502#define emith_neg_r_r(d, s) \
503 EOP_RSB_IMM(d, s, 0, 0)
504
505#define emith_lsl(d, s, cnt) \
506 EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_LSL,cnt)
507
508#define emith_lsr(d, s, cnt) \
509 EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_LSR,cnt)
510
511#define emith_asr(d, s, cnt) \
512 EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_ASR,cnt)
513
514#define emith_ror_c(cond, d, s, cnt) \
515 EOP_MOV_REG(cond,0,d,s,A_AM1_ROR,cnt)
516
517#define emith_ror(d, s, cnt) \
518 emith_ror_c(A_COND_AL, d, s, cnt)
519
520#define emith_rol(d, s, cnt) \
521 EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_ROR,32-(cnt)); \
522
523#define emith_lslf(d, s, cnt) \
524 EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_LSL,cnt)
525
526#define emith_lsrf(d, s, cnt) \
527 EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_LSR,cnt)
528
529#define emith_asrf(d, s, cnt) \
530 EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ASR,cnt)
531
532// note: only C flag updated correctly
533#define emith_rolf(d, s, cnt) { \
534 EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ROR,32-(cnt)); \
535 /* we don't have ROL so we shift to get the right carry */ \
536 EOP_TST_REG(A_COND_AL,d,d,A_AM1_LSR,1); \
537}
538
539#define emith_rorf(d, s, cnt) \
540 EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ROR,cnt)
541
542#define emith_rolcf(d) \
543 emith_adcf_r_r(d, d)
544
545#define emith_rorcf(d) \
546 EOP_MOV_REG(A_COND_AL,1,d,d,A_AM1_ROR,0) /* ROR #0 -> RRX */
547
548#define emith_negcf_r_r(d, s) \
549 EOP_C_DOP_IMM(A_COND_AL,A_OP_RSC,1,s,d,0,0)
550
551#define emith_mul(d, s1, s2) { \
552 if ((d) != (s1)) /* rd != rm limitation */ \
553 EOP_MUL(d, s1, s2); \
554 else \
555 EOP_MUL(d, s2, s1); \
556}
557
558#define emith_mul_u64(dlo, dhi, s1, s2) \
559 EOP_C_UMULL(A_COND_AL,0,dhi,dlo,s1,s2)
560
561#define emith_mul_s64(dlo, dhi, s1, s2) \
562 EOP_C_SMULL(A_COND_AL,0,dhi,dlo,s1,s2)
563
564#define emith_mula_s64(dlo, dhi, s1, s2) \
565 EOP_C_SMLAL(A_COND_AL,0,dhi,dlo,s1,s2)
566
567// misc
568#define emith_read_r_r_offs_c(cond, r, rs, offs) \
569 EOP_LDR_IMM2(cond, r, rs, offs)
570
571#define emith_read8_r_r_offs_c(cond, r, rs, offs) \
572 EOP_LDRB_IMM2(cond, r, rs, offs)
573
574#define emith_read16_r_r_offs_c(cond, r, rs, offs) \
575 EOP_LDRH_IMM2(cond, r, rs, offs)
576
577#define emith_read_r_r_offs(r, rs, offs) \
578 emith_read_r_r_offs_c(A_COND_AL, r, rs, offs)
579
580#define emith_read8_r_r_offs(r, rs, offs) \
581 emith_read8_r_r_offs_c(A_COND_AL, r, rs, offs)
582
583#define emith_read16_r_r_offs(r, rs, offs) \
584 emith_read16_r_r_offs_c(A_COND_AL, r, rs, offs)
585
586#define emith_ctx_read(r, offs) \
587 emith_read_r_r_offs(r, CONTEXT_REG, offs)
588
589#define emith_ctx_write(r, offs) \
590 EOP_STR_IMM(r, CONTEXT_REG, offs)
591
592#define emith_ctx_do_multiple(op, r, offs, count, tmpr) do { \
593 int v_, r_ = r, c_ = count, b_ = CONTEXT_REG; \
594 for (v_ = 0; c_; c_--, r_++) \
595 v_ |= 1 << r_; \
596 if ((offs) != 0) { \
597 EOP_ADD_IMM(tmpr,CONTEXT_REG,30/2,(offs)>>2);\
598 b_ = tmpr; \
599 } \
600 op(b_,v_); \
601} while(0)
602
603#define emith_ctx_read_multiple(r, offs, count, tmpr) \
604 emith_ctx_do_multiple(EOP_LDMIA, r, offs, count, tmpr)
605
606#define emith_ctx_write_multiple(r, offs, count, tmpr) \
607 emith_ctx_do_multiple(EOP_STMIA, r, offs, count, tmpr)
608
609#define emith_clear_msb_c(cond, d, s, count) { \
610 u32 t; \
611 if ((count) <= 8) { \
612 t = (count) - 8; \
613 t = (0xff << t) & 0xff; \
614 EOP_BIC_IMM(d,s,8/2,t); \
615 EOP_C_DOP_IMM(cond,A_OP_BIC,0,s,d,8/2,t); \
616 } else if ((count) >= 24) { \
617 t = (count) - 24; \
618 t = 0xff >> t; \
619 EOP_AND_IMM(d,s,0,t); \
620 EOP_C_DOP_IMM(cond,A_OP_AND,0,s,d,0,t); \
621 } else { \
622 EOP_MOV_REG(cond,0,d,s,A_AM1_LSL,count); \
623 EOP_MOV_REG(cond,0,d,d,A_AM1_LSR,count); \
624 } \
625}
626
627#define emith_clear_msb(d, s, count) \
628 emith_clear_msb_c(A_COND_AL, d, s, count)
629
630#define emith_sext(d, s, bits) { \
631 EOP_MOV_REG_LSL(d,s,32 - (bits)); \
632 EOP_MOV_REG_ASR(d,d,32 - (bits)); \
633}
634
635// upto 4 args
636#define emith_pass_arg_r(arg, reg) \
637 EOP_MOV_REG_SIMPLE(arg, reg)
638
639#define emith_pass_arg_imm(arg, imm) \
640 emith_move_r_imm(arg, imm)
641
642#define emith_jump(target) \
643 emith_jump_cond(A_COND_AL, target)
644
645#define emith_jump_patchable(target) \
646 emith_jump(target)
647
648#define emith_jump_cond(cond, target) \
649 emith_xbranch(cond, target, 0)
650
651#define emith_jump_cond_patchable(cond, target) \
652 emith_jump_cond(cond, target)
653
654#define emith_jump_patch(ptr, target) do { \
655 u32 *ptr_ = ptr; \
656 u32 val_ = (u32 *)(target) - ptr_ - 2; \
657 *ptr_ = (*ptr_ & 0xff000000) | (val_ & 0x00ffffff); \
658} while (0)
659
660#define emith_jump_at(ptr, target) { \
661 u32 val_ = (u32 *)(target) - (u32 *)(ptr) - 2; \
662 EOP_C_B_PTR(ptr, A_COND_AL, 0, val_ & 0xffffff); \
663}
664
665#define emith_jump_reg_c(cond, r) \
666 EOP_C_BX(cond, r)
667
668#define emith_jump_reg(r) \
669 emith_jump_reg_c(A_COND_AL, r)
670
671#define emith_jump_ctx_c(cond, offs) \
672 EOP_LDR_IMM2(cond,15,CONTEXT_REG,offs)
673
674#define emith_jump_ctx(offs) \
675 emith_jump_ctx_c(A_COND_AL, offs)
676
677#define emith_call_cond(cond, target) \
678 emith_xbranch(cond, target, 1)
679
680#define emith_call(target) \
681 emith_call_cond(A_COND_AL, target)
682
683#define emith_call_ctx(offs) { \
684 emith_move_r_r(14, 15); \
685 emith_jump_ctx(offs); \
686}
687
688#define emith_ret_c(cond) \
689 emith_jump_reg_c(cond, 14)
690
691#define emith_ret() \
692 emith_ret_c(A_COND_AL)
693
694#define emith_ret_to_ctx(offs) \
695 emith_ctx_write(14, offs)
696
697#define emith_push_ret() \
698 EOP_STMFD_SP(A_R14M)
699
700#define emith_pop_and_ret() \
701 EOP_LDMFD_SP(A_R15M)
702
703#define host_instructions_updated(base, end) \
704 cache_flush_d_inval_i(base, end)
705
706#define host_arg2reg(rd, arg) \
707 rd = arg
708
709/* SH2 drc specific */
710#define emith_sh2_drc_entry() \
711 EOP_STMFD_SP(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R14M)
712
713#define emith_sh2_drc_exit() \
714 EOP_LDMFD_SP(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R15M)
715
716#define emith_sh2_wcall(a, tab, ret_ptr) { \
717 int val_ = (char *)(ret_ptr) - (char *)tcache_ptr - 2*4; \
718 if (val_ >= 0) \
719 emith_add_r_r_imm(14, 15, val_); \
720 else if (val_ < 0) \
721 emith_sub_r_r_imm(14, 15, -val_); \
722 emith_lsr(12, a, SH2_WRITE_SHIFT); \
723 EOP_LDR_REG_LSL(A_COND_AL,12,tab,12,2); \
724 emith_ctx_read(2, offsetof(SH2, is_slave)); \
725 emith_jump_reg(12); \
726}
727
728#define emith_sh2_dtbf_loop() { \
729 int cr, rn; \
730 int tmp_ = rcache_get_tmp(); \
731 cr = rcache_get_reg(SHR_SR, RC_GR_RMW); \
732 rn = rcache_get_reg((op >> 8) & 0x0f, RC_GR_RMW); \
733 emith_sub_r_imm(rn, 1); /* sub rn, #1 */ \
734 emith_bic_r_imm(cr, 1); /* bic cr, #1 */ \
735 emith_sub_r_imm(cr, (cycles+1) << 12); /* sub cr, #(cycles+1)<<12 */ \
736 cycles = 0; \
737 emith_asrf(tmp_, cr, 2+12); /* movs tmp_, cr, asr #2+12 */\
738 EOP_MOV_IMM_C(A_COND_MI,tmp_,0,0); /* movmi tmp_, #0 */ \
739 emith_lsl(cr, cr, 20); /* mov cr, cr, lsl #20 */ \
740 emith_lsr(cr, cr, 20); /* mov cr, cr, lsr #20 */ \
741 emith_subf_r_r(rn, tmp_); /* subs rn, tmp_ */ \
742 EOP_RSB_IMM_C(A_COND_LS,tmp_,rn,0,0); /* rsbls tmp_, rn, #0 */ \
743 EOP_ORR_REG(A_COND_LS,0,cr,cr,tmp_,A_AM1_LSL,12+2); /* orrls cr,tmp_,lsl #12+2 */\
744 EOP_ORR_IMM_C(A_COND_LS,cr,cr,0,1); /* orrls cr, #1 */ \
745 EOP_MOV_IMM_C(A_COND_LS,rn,0,0); /* movls rn, #0 */ \
746 rcache_free_tmp(tmp_); \
747}
748
749#define emith_write_sr(sr, srcr) { \
750 emith_lsr(sr, sr, 10); \
751 emith_or_r_r_r_lsl(sr, sr, srcr, 22); \
752 emith_ror(sr, sr, 22); \
753}
754
755#define emith_carry_to_t(srr, is_sub) { \
756 if (is_sub) { /* has inverted C on ARM */ \
757 emith_or_r_imm_c(A_COND_CC, srr, 1); \
758 emith_bic_r_imm_c(A_COND_CS, srr, 1); \
759 } else { \
760 emith_or_r_imm_c(A_COND_CS, srr, 1); \
761 emith_bic_r_imm_c(A_COND_CC, srr, 1); \
762 } \
763}
764
765#define emith_tpop_carry(sr, is_sub) { \
766 if (is_sub) \
767 emith_eor_r_imm(sr, 1); \
768 emith_lsrf(sr, sr, 1); \
769}
770
771#define emith_tpush_carry(sr, is_sub) { \
772 emith_adc_r_r(sr, sr); \
773 if (is_sub) \
774 emith_eor_r_imm(sr, 1); \
775}
776
777/*
778 * if Q
779 * t = carry(Rn += Rm)
780 * else
781 * t = carry(Rn -= Rm)
782 * T ^= t
783 */
784#define emith_sh2_div1_step(rn, rm, sr) { \
785 void *jmp0, *jmp1; \
786 emith_tst_r_imm(sr, Q); /* if (Q ^ M) */ \
787 JMP_POS(jmp0); /* beq do_sub */ \
788 emith_addf_r_r(rn, rm); \
789 emith_eor_r_imm_c(A_COND_CS, sr, T); \
790 JMP_POS(jmp1); /* b done */ \
791 JMP_EMIT(A_COND_EQ, jmp0); /* do_sub: */ \
792 emith_subf_r_r(rn, rm); \
793 emith_eor_r_imm_c(A_COND_CC, sr, T); \
794 JMP_EMIT(A_COND_AL, jmp1); /* done: */ \
795}
796
fast MegaDrive/MegaCD/32X emulator