[picodrive.git] / Pico / carthw / svp / gen_arm.c

#define EMIT(x) *tcache_ptr++ = x

#define A_R4M  (1 << 4)
#define A_R5M  (1 << 5)
#define A_R6M  (1 << 6)
#define A_R7M  (1 << 7)
#define A_R8M  (1 << 8)
#define A_R9M  (1 << 9)
#define A_R10M (1 << 10)
#define A_R11M (1 << 11)
#define A_R14M (1 << 14)

#define A_COND_AL 0xe
#define A_COND_EQ 0x0
#define A_COND_NE 0x1
#define A_COND_MI 0x4
#define A_COND_PL 0x5

/* addressing mode 1 */
#define A_AM1_LSL 0
#define A_AM1_LSR 1
#define A_AM1_ASR 2
#define A_AM1_ROR 3

#define A_AM1_IMM(ror2,imm8)                  (((ror2)<<8) | (imm8) | 0x02000000)
#define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) | ((shift_op)<<5) | (rm))
#define A_AM1_REG_XREG(rs,shift_op,rm)        (((rs)<<8) | ((shift_op)<<5) | 0x10 | (rm))

/* data processing op */
#define A_OP_AND 0x0
#define A_OP_EOR 0x1
#define A_OP_SUB 0x2
#define A_OP_RSB 0x3
#define A_OP_ADD 0x4
#define A_OP_TST 0x8
#define A_OP_ORR 0xc
#define A_OP_MOV 0xd
#define A_OP_BIC 0xe

#define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \
	EMIT(((cond)<<28) | ((op)<< 21) | ((s)<<20) | ((rn)<<16) | ((rd)<<12) | (shifter_op))

#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))
#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))
#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))

#define EOP_MOV_IMM(rd,   ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,0, 0,rd,ror2,imm8)
#define EOP_ORR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,0,rn,rd,ror2,imm8)
#define EOP_ADD_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ADD,0,rn,rd,ror2,imm8)
#define EOP_BIC_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_BIC,0,rn,rd,ror2,imm8)
#define EOP_AND_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,0,rn,rd,ror2,imm8)
#define EOP_SUB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_SUB,0,rn,rd,ror2,imm8)
#define EOP_TST_IMM(   rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_TST,1,rn, 0,ror2,imm8)
#define EOP_RSB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_RSB,0,rn,rd,ror2,imm8)

#define EOP_MOV_REG(s,   rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm)
#define EOP_ORR_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ORR,s,rn,rd,shift_imm,shift_op,rm)
#define EOP_ADD_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ADD,s,rn,rd,shift_imm,shift_op,rm)
#define EOP_TST_REG(  rn,   shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_TST,1,rn, 0,shift_imm,shift_op,rm)

#define EOP_MOV_REG2(s,   rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_MOV,s, 0,rd,rs,shift_op,rm)
#define EOP_ADD_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_ADD,s,rn,rd,rs,shift_op,rm)
#define EOP_SUB_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_SUB,s,rn,rd,rs,shift_op,rm)

#define EOP_MOV_REG_SIMPLE(rd,rm)           EOP_MOV_REG(0,rd,0,A_AM1_LSL,rm)
#define EOP_MOV_REG_LSL(rd,   rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSL,rm)
#define EOP_MOV_REG_LSR(rd,   rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSR,rm)
#define EOP_MOV_REG_ASR(rd,   rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ASR,rm)
#define EOP_MOV_REG_ROR(rd,   rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ROR,rm)

#define EOP_ORR_REG_SIMPLE(rd,rm)           EOP_ORR_REG(0,rd,rd,0,A_AM1_LSL,rm)
#define EOP_ORR_REG_LSL(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm)
#define EOP_ORR_REG_LSR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm)
#define EOP_ORR_REG_ASR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ASR,rm)
#define EOP_ORR_REG_ROR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ROR,rm)

#define EOP_ADD_REG_SIMPLE(rd,rm)           EOP_ADD_REG(0,rd,rd,0,A_AM1_LSL,rm)
#define EOP_ADD_REG_LSL(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm)
#define EOP_ADD_REG_LSR(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm)

#define EOP_TST_REG_SIMPLE(rn,rm)           EOP_TST_REG(  rn,   0,A_AM1_LSL,rm)

#define EOP_MOV_REG2_LSL(rd,   rm,rs)       EOP_MOV_REG2(0,   rd,rs,A_AM1_LSL,rm)
#define EOP_MOV_REG2_ROR(rd,   rm,rs)       EOP_MOV_REG2(0,   rd,rs,A_AM1_ROR,rm)
#define EOP_ADD_REG2_LSL(rd,rn,rm,rs)       EOP_ADD_REG2(0,rn,rd,rs,A_AM1_LSL,rm)
#define EOP_SUB_REG2_LSL(rd,rn,rm,rs)       EOP_SUB_REG2(0,rn,rd,rs,A_AM1_LSL,rm)

/* addressing mode 2 */
#define EOP_C_AM2_IMM(cond,u,b,l,rn,rd,offset_12) \
	EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12))

/* addressing mode 3 */
#define EOP_C_AM3_IMM(cond,u,l,rn,rd,s,h,offset_8) \
	EMIT(((cond)<<28) | 0x01400090 | ((u)<<23) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (((offset_8)&0xf0)<<4) | \
			((s)<<6) | ((h)<<5) | ((offset_8)&0xf))

/* ldr and str */
#define EOP_LDR_IMM(   rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,offset_12)
#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,0,0,1,rn,rd,offset_12)
#define EOP_LDR_SIMPLE(rd,rn)           EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,0)
#define EOP_STR_IMM(   rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,offset_12)
#define EOP_STR_SIMPLE(rd,rn)           EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,0)

#define EOP_LDRH_IMM(   rd,rn,offset_8)  EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,offset_8)
#define EOP_LDRH_SIMPLE(rd,rn)           EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,0)
#define EOP_STRH_IMM(   rd,rn,offset_8)  EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,offset_8)
#define EOP_STRH_SIMPLE(rd,rn)           EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,0)

/* ldm and stm */
#define EOP_XXM(cond,p,u,s,w,l,rn,list) \
	EMIT(((cond)<<28) | (1<<27) | ((p)<<24) | ((u)<<23) | ((s)<<22) | ((w)<<21) | ((l)<<20) | ((rn)<<16) | (list))

#define EOP_STMFD_ST(list) EOP_XXM(A_COND_AL,1,0,0,1,0,13,list)
#define EOP_LDMFD_ST(list) EOP_XXM(A_COND_AL,0,1,0,1,1,13,list)

/* branches */
#define EOP_C_BX(cond,rm) \
	EMIT(((cond)<<28) | 0x012fff10 | (rm))

#define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm)

#define EOP_C_B(cond,l,signed_immed_24) \
	EMIT(((cond)<<28) | 0x0a000000 | ((l)<<24) | (signed_immed_24))

#define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24)
#define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24)

/* misc */
#define EOP_C_MUL(cond,s,rd,rs,rm) \
	EMIT(((cond)<<28) | ((s)<<20) | ((rd)<<16) | ((rs)<<8) | 0x90 | (rm))

#define EOP_MUL(rd,rm,rs) EOP_C_MUL(A_COND_AL,0,rd,rs,rm) // note: rd != rm

#define EOP_C_MRS(cond,rd) \
	EMIT(((cond)<<28) | 0x010f0000 | ((rd)<<12))

#define EOP_C_MSR_IMM(cond,ror2,imm) \
	EMIT(((cond)<<28) | 0x0328f000 | ((ror2)<<8) | (imm)) // cpsr_f

#define EOP_C_MSR_REG(cond,rm) \
	EMIT(((cond)<<28) | 0x0128f000 | (rm)) // cpsr_f

#define EOP_MRS(rd)           EOP_C_MRS(A_COND_AL,rd)
#define EOP_MSR_IMM(ror2,imm) EOP_C_MSR_IMM(A_COND_AL,ror2,imm)
#define EOP_MSR_REG(rm)       EOP_C_MSR_REG(A_COND_AL,rm)


static void emit_mov_const(int cond, int d, unsigned int val)
{
	int need_or = 0;
	if (val & 0xff000000) {
		EOP_C_DOP_IMM(cond, A_OP_MOV, 0, 0, d, 8/2, (val>>24)&0xff);
		need_or = 1;
	}
	if (val & 0x00ff0000) {
		EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 16/2, (val>>16)&0xff);
		need_or = 1;
	}
	if (val & 0x0000ff00) {
		EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 24/2, (val>>8)&0xff);
		need_or = 1;
	}
	if ((val &0x000000ff) || !need_or)
		EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 0, val&0xff);
}

/*
static void check_offset_12(unsigned int val)
{
	if (!(val & ~0xfff)) return;
	printf("offset_12 overflow %04x\n", val);
	exit(1);
}
*/

static void check_offset_24(int val)
{
	if (val >= (int)0xff000000 && val <= 0x00ffffff) return;
	printf("offset_24 overflow %08x\n", val);
	exit(1);
}

static void emit_call(void *target)
{
	int val = (unsigned int *)target - tcache_ptr - 2;
	check_offset_24(val);

	EOP_BL(val & 0xffffff);			// bl target
}

static void emit_block_prologue(void)
{
	// stack regs
	EOP_STMFD_ST(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R14M);	// stmfd r13!, {r4-r11,lr}
	emit_call(regfile_load);
	EOP_MOV_IMM(11, 0, 0);			// mov r11, #0
}

static void emit_block_epilogue(int icount)
{
	if (icount > 0xff) { printf("large icount: %i\n", icount); icount = 0xff; }
	emit_call(regfile_store);
	EOP_ADD_IMM(0,11,0,icount);		// add r0, r11, #icount
	EOP_LDMFD_ST(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R14M);	// ldmfd r13!, {r4-r11,lr}
	EOP_BX(14);				// bx r14
}

static void emit_pc_dump(int pc)
{
	emit_mov_const(A_COND_AL, 3, pc<<16);
	EOP_STR_IMM(3,7,0x400+6*4);		// str r3, [r7, #(0x400+6*8)]
}

static void handle_caches()
{
#ifdef ARM
	extern void flush_inval_caches(const void *start_addr, const void *end_addr);
	flush_inval_caches(tcache, tcache_ptr);
#endif
}
Commit	Line	Data
5c129565	1	#define EMIT(x) *tcache_ptr++ = x
5c129565	2
e807ac75	3	#define A_R4M (1 << 4)
	4	#define A_R5M (1 << 5)
	5	#define A_R6M (1 << 6)
	6	#define A_R7M (1 << 7)
	7	#define A_R8M (1 << 8)
	8	#define A_R9M (1 << 9)
	9	#define A_R10M (1 << 10)
	10	#define A_R11M (1 << 11)
5c129565	11	#define A_R14M (1 << 14)
	12
	13	#define A_COND_AL 0xe
b9c1d012	14	#define A_COND_EQ 0x0
bad5731d	15	#define A_COND_NE 0x1
	16	#define A_COND_MI 0x4
	17	#define A_COND_PL 0x5
5c129565	18
	19	/* addressing mode 1 */
	20	#define A_AM1_LSL 0
	21	#define A_AM1_LSR 1
	22	#define A_AM1_ASR 2
	23	#define A_AM1_ROR 3
	24
	25	#define A_AM1_IMM(ror2,imm8) (((ror2)<<8) \| (imm8) \| 0x02000000)
	26	#define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) \| ((shift_op)<<5) \| (rm))
89fea1e9	27	#define A_AM1_REG_XREG(rs,shift_op,rm) (((rs)<<8) \| ((shift_op)<<5) \| 0x10 \| (rm))
5c129565	28
5c129565	29	/* data processing op */
5d817c91	30	#define A_OP_AND 0x0
89fea1e9	31	#define A_OP_EOR 0x1
5d817c91	32	#define A_OP_SUB 0x2
89fea1e9	33	#define A_OP_RSB 0x3
f48f5e3b	34	#define A_OP_ADD 0x4
b9c1d012	35	#define A_OP_TST 0x8
5c129565	36	#define A_OP_ORR 0xc
5c129565	37	#define A_OP_MOV 0xd
5d817c91	38	#define A_OP_BIC 0xe
5c129565	39
	40	#define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \
	41	EMIT(((cond)<<28) \| ((op)<< 21) \| ((s)<<20) \| ((rn)<<16) \| ((rd)<<12) \| (shifter_op))
	42
89fea1e9	43	#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))
	44	#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))
	45	#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))
5c129565	46
5d817c91	47	#define EOP_MOV_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,0, 0,rd,ror2,imm8)
	48	#define EOP_ORR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,0,rn,rd,ror2,imm8)
	49	#define EOP_ADD_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ADD,0,rn,rd,ror2,imm8)
	50	#define EOP_BIC_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_BIC,0,rn,rd,ror2,imm8)
	51	#define EOP_AND_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,0,rn,rd,ror2,imm8)
d274c33b	52	#define EOP_SUB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_SUB,0,rn,rd,ror2,imm8)
bad5731d	53	#define EOP_TST_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_TST,1,rn, 0,ror2,imm8)
89fea1e9	54	#define EOP_RSB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_RSB,0,rn,rd,ror2,imm8)
5c129565	55
89fea1e9	56	#define EOP_MOV_REG(s, rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm)
	57	#define EOP_ORR_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ORR,s,rn,rd,shift_imm,shift_op,rm)
	58	#define EOP_ADD_REG(s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ADD,s,rn,rd,shift_imm,shift_op,rm)
	59	#define EOP_TST_REG( rn, shift_imm,shift_op,rm) EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_TST,1,rn, 0,shift_imm,shift_op,rm)
	60
	61	#define EOP_MOV_REG2(s, rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_MOV,s, 0,rd,rs,shift_op,rm)
	62	#define EOP_ADD_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_ADD,s,rn,rd,rs,shift_op,rm)
	63	#define EOP_SUB_REG2(s,rn,rd,rs,shift_op,rm) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_SUB,s,rn,rd,rs,shift_op,rm)
5c129565	64
5d817c91	65	#define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(0,rd,0,A_AM1_LSL,rm)
	66	#define EOP_MOV_REG_LSL(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSL,rm)
	67	#define EOP_MOV_REG_LSR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_LSR,rm)
	68	#define EOP_MOV_REG_ASR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ASR,rm)
	69	#define EOP_MOV_REG_ROR(rd, rm,shift_imm) EOP_MOV_REG(0,rd,shift_imm,A_AM1_ROR,rm)
5c129565	70
5d817c91	71	#define EOP_ORR_REG_SIMPLE(rd,rm) EOP_ORR_REG(0,rd,rd,0,A_AM1_LSL,rm)
	72	#define EOP_ORR_REG_LSL(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm)
	73	#define EOP_ORR_REG_LSR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm)
	74	#define EOP_ORR_REG_ASR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ASR,rm)
	75	#define EOP_ORR_REG_ROR(rd,rn,rm,shift_imm) EOP_ORR_REG(0,rn,rd,shift_imm,A_AM1_ROR,rm)
	76
	77	#define EOP_ADD_REG_SIMPLE(rd,rm) EOP_ADD_REG(0,rd,rd,0,A_AM1_LSL,rm)
	78	#define EOP_ADD_REG_LSL(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSL,rm)
	79	#define EOP_ADD_REG_LSR(rd,rn,rm,shift_imm) EOP_ADD_REG(0,rn,rd,shift_imm,A_AM1_LSR,rm)
f48f5e3b	80
b9c1d012	81	#define EOP_TST_REG_SIMPLE(rn,rm) EOP_TST_REG( rn, 0,A_AM1_LSL,rm)
b9c1d012	82
89fea1e9	83	#define EOP_MOV_REG2_LSL(rd, rm,rs) EOP_MOV_REG2(0, rd,rs,A_AM1_LSL,rm)
	84	#define EOP_MOV_REG2_ROR(rd, rm,rs) EOP_MOV_REG2(0, rd,rs,A_AM1_ROR,rm)
	85	#define EOP_ADD_REG2_LSL(rd,rn,rm,rs) EOP_ADD_REG2(0,rn,rd,rs,A_AM1_LSL,rm)
	86	#define EOP_SUB_REG2_LSL(rd,rn,rm,rs) EOP_SUB_REG2(0,rn,rd,rs,A_AM1_LSL,rm)
	87
f48f5e3b	88	/* addressing mode 2 */
f48f5e3b	89	#define EOP_C_AM2_IMM(cond,u,b,l,rn,rd,offset_12) \
5c129565	90	EMIT(((cond)<<28) \| 0x05000000 \| ((u)<<23) \| ((b)<<22) \| ((l)<<20) \| ((rn)<<16) \| ((rd)<<12) \| (offset_12))
5c129565	91
f48f5e3b	92	/* addressing mode 3 */
	93	#define EOP_C_AM3_IMM(cond,u,l,rn,rd,s,h,offset_8) \
	94	EMIT(((cond)<<28) \| 0x01400090 \| ((u)<<23) \| ((l)<<20) \| ((rn)<<16) \| ((rd)<<12) \| (((offset_8)&0xf0)<<4) \| \
	95	((s)<<6) \| ((h)<<5) \| ((offset_8)&0xf))
	96
	97	/* ldr and str */
	98	#define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,offset_12)
	99	#define EOP_LDR_NEGIMM(rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,0,0,1,rn,rd,offset_12)
	100	#define EOP_LDR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,0)
	101	#define EOP_STR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,offset_12)
	102	#define EOP_STR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,0)
	103
5d817c91	104	#define EOP_LDRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,offset_8)
	105	#define EOP_LDRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,0)
	106	#define EOP_STRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,offset_8)
	107	#define EOP_STRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,0)
5c129565	108
	109	/* ldm and stm */
	110	#define EOP_XXM(cond,p,u,s,w,l,rn,list) \
	111	EMIT(((cond)<<28) \| (1<<27) \| ((p)<<24) \| ((u)<<23) \| ((s)<<22) \| ((w)<<21) \| ((l)<<20) \| ((rn)<<16) \| (list))
	112
	113	#define EOP_STMFD_ST(list) EOP_XXM(A_COND_AL,1,0,0,1,0,13,list)
	114	#define EOP_LDMFD_ST(list) EOP_XXM(A_COND_AL,0,1,0,1,1,13,list)
	115
	116	/* branches */
	117	#define EOP_C_BX(cond,rm) \
	118	EMIT(((cond)<<28) \| 0x012fff10 \| (rm))
	119
	120	#define EOP_BX(rm) EOP_C_BX(A_COND_AL,rm)
	121
e807ac75	122	#define EOP_C_B(cond,l,signed_immed_24) \
	123	EMIT(((cond)<<28) \| 0x0a000000 \| ((l)<<24) \| (signed_immed_24))
	124
	125	#define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24)
	126	#define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24)
	127
d274c33b	128	/* misc */
	129	#define EOP_C_MUL(cond,s,rd,rs,rm) \
	130	EMIT(((cond)<<28) \| ((s)<<20) \| ((rd)<<16) \| ((rs)<<8) \| 0x90 \| (rm))
	131
	132	#define EOP_MUL(rd,rm,rs) EOP_C_MUL(A_COND_AL,0,rd,rs,rm) // note: rd != rm
	133
bad5731d	134	#define EOP_C_MRS(cond,rd) \
89fea1e9	135	EMIT(((cond)<<28) \| 0x010f0000 \| ((rd)<<12))
5c129565	136
6e39239f	137	#define EOP_C_MSR_IMM(cond,ror2,imm) \
	138	EMIT(((cond)<<28) \| 0x0328f000 \| ((ror2)<<8) \| (imm)) // cpsr_f
	139
	140	#define EOP_C_MSR_REG(cond,rm) \
	141	EMIT(((cond)<<28) \| 0x0128f000 \| (rm)) // cpsr_f
	142
	143	#define EOP_MRS(rd) EOP_C_MRS(A_COND_AL,rd)
	144	#define EOP_MSR_IMM(ror2,imm) EOP_C_MSR_IMM(A_COND_AL,ror2,imm)
	145	#define EOP_MSR_REG(rm) EOP_C_MSR_REG(A_COND_AL,rm)
bad5731d	146
	147
	148	static void emit_mov_const(int cond, int d, unsigned int val)
5c129565	149	{
5c129565	150	int need_or = 0;
259ed0ea	151	if (val & 0xff000000) {
bad5731d	152	EOP_C_DOP_IMM(cond, A_OP_MOV, 0, 0, d, 8/2, (val>>24)&0xff);
5c129565	153	need_or = 1;
5c129565	154	}
259ed0ea	155	if (val & 0x00ff0000) {
bad5731d	156	EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 16/2, (val>>16)&0xff);
259ed0ea	157	need_or = 1;
	158	}
	159	if (val & 0x0000ff00) {
bad5731d	160	EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 24/2, (val>>8)&0xff);
259ed0ea	161	need_or = 1;
	162	}
	163	if ((val &0x000000ff) \|\| !need_or)
bad5731d	164	EOP_C_DOP_IMM(cond, need_or ? A_OP_ORR : A_OP_MOV, 0, need_or ? d : 0, d, 0, val&0xff);
259ed0ea	165	}
259ed0ea	166
e807ac75	167	/*
259ed0ea	168	static void check_offset_12(unsigned int val)
	169	{
	170	if (!(val & ~0xfff)) return;
	171	printf("offset_12 overflow %04x\n", val);
	172	exit(1);
5c129565	173	}
e807ac75	174	*/
5c129565	175
e807ac75	176	static void check_offset_24(int val)
5c129565	177	{
e807ac75	178	if (val >= (int)0xff000000 && val <= 0x00ffffff) return;
	179	printf("offset_24 overflow %08x\n", val);
	180	exit(1);
5c129565	181	}
5c129565	182
e807ac75	183	static void emit_call(void *target)
5c129565	184	{
e807ac75	185	int val = (unsigned int *)target - tcache_ptr - 2;
e807ac75	186	check_offset_24(val);
259ed0ea	187
e807ac75	188	EOP_BL(val & 0xffffff); // bl target
e807ac75	189	}
5c129565	190
e807ac75	191	static void emit_block_prologue(void)
	192	{
	193	// stack regs
	194	EOP_STMFD_ST(A_R4M\|A_R5M\|A_R6M\|A_R7M\|A_R8M\|A_R9M\|A_R10M\|A_R11M\|A_R14M); // stmfd r13!, {r4-r11,lr}
	195	emit_call(regfile_load);
b9c1d012	196	EOP_MOV_IMM(11, 0, 0); // mov r11, #0
5c129565	197	}
5c129565	198
e807ac75	199	static void emit_block_epilogue(int icount)
5c129565	200	{
b9c1d012	201	if (icount > 0xff) { printf("large icount: %i\n", icount); icount = 0xff; }
e807ac75	202	emit_call(regfile_store);
b9c1d012	203	EOP_ADD_IMM(0,11,0,icount); // add r0, r11, #icount
e807ac75	204	EOP_LDMFD_ST(A_R4M\|A_R5M\|A_R6M\|A_R7M\|A_R8M\|A_R9M\|A_R10M\|A_R11M\|A_R14M); // ldmfd r13!, {r4-r11,lr}
e807ac75	205	EOP_BX(14); // bx r14
e807ac75	206	}
259ed0ea	207
e807ac75	208	static void emit_pc_dump(int pc)
e807ac75	209	{
bad5731d	210	emit_mov_const(A_COND_AL, 3, pc<<16);
e807ac75	211	EOP_STR_IMM(3,7,0x400+64); // str r3, [r7, #(0x400+68)]
5c129565	212	}
5c129565	213
259ed0ea	214	static void handle_caches()
	215	{
	216	#ifdef ARM
	217	extern void flush_inval_caches(const void start_addr, const void end_addr);
	218	flush_inval_caches(tcache, tcache_ptr);
259ed0ea	219	#endif
	220	}
	221
5c129565	222