#define M 0x00000200
typedef enum {
- SHR_R0 = 0, SHR_R15 = 15,
+ SHR_R0 = 0, SHR_SP = 15,
SHR_PC, SHR_PPC, SHR_PR, SHR_SR,
SHR_GBR, SHR_VBR, SHR_MACH, SHR_MACL,
} sh2_reg_e;
static void emit_move_r_imm32(sh2_reg_e dst, u32 imm)
{
+ // TODO: propagate this constant
int hr = rcache_get_reg(dst, RC_GR_WRITE);
emith_move_r_imm(hr, imm);
}
emith_move_r_r(hr_d, hr_s);
}
+// T must be clear, and comparison done just before this
+static void emit_or_t_if_eq(int srr)
+{
+ EMITH_SJMP_START(DCOND_NE);
+ emith_or_r_imm_c(DCOND_EQ, srr, T);
+ EMITH_SJMP_END(DCOND_NE);
+}
+
// arguments must be ready
// reg cache must be clean before call
static int emit_memhandler_read(int size)
rcache_invalidate();
}
-/*
-MOV #imm,Rn 1110nnnniiiiiiii
-MOV.W @(disp,PC),Rn 1001nnnndddddddd
-MOV.L @(disp,PC),Rn 1101nnnndddddddd
-MOV Rm,Rn 0110nnnnmmmm0011
-MOV.B @Rm,Rn 0110nnnnmmmm0000
-MOV.W @Rm,Rn 0110nnnnmmmm0001
-MOV.L @Rm,Rn 0110nnnnmmmm0010
-MOV.B @Rm+,Rn 0110nnnnmmmm0100
-MOV.W @Rm+,Rn 0110nnnnmmmm0101
-MOV.L @Rm+,Rn 0110nnnnmmmm0110
-MOV.B R0,@(disp,Rn) 10000000nnnndddd
-MOV.W R0,@(disp,Rn) 10000001nnnndddd
-MOV.B @(disp,Rm),R0 10000100mmmmdddd
-MOV.W @(disp,Rm),R0 10000101mmmmdddd
-MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd
-MOV.B R0,@(disp,GBR) 11000000dddddddd
-MOV.W R0,@(disp,GBR) 11000001dddddddd
-MOV.L R0,@(disp,GBR) 11000010dddddddd
-MOV.B @(disp,GBR),R0 11000100dddddddd
-MOV.W @(disp,GBR),R0 11000101dddddddd
-MOV.L @(disp,GBR),R0 11000110dddddddd
-MOVA @(disp,PC),R0 11000111dddddddd
-SWAP.B Rm,Rn 0110nnnnmmmm1000
-SWAP.W Rm,Rn 0110nnnnmmmm1001
-ADD #imm,Rn 0111nnnniiiiiiii
-CMP/EQ #imm,R0 10001000iiiiiiii
-EXTS.B Rm,Rn 0110nnnnmmmm1110
-EXTS.W Rm,Rn 0110nnnnmmmm1111
-EXTU.B Rm,Rn 0110nnnnmmmm1100
-EXTU.W Rm,Rn 0110nnnnmmmm1101
-MAC @Rm+,@Rn+ 0100nnnnmmmm1111
-NEG Rm,Rn 0110nnnnmmmm1011
-NEGC Rm,Rn 0110nnnnmmmm1010
-AND #imm,R0 11001001iiiiiiii
-AND.B #imm,@(R0,GBR) 11001101iiiiiiii
-NOT Rm,Rn 0110nnnnmmmm0111
-OR #imm,R0 11001011iiiiiiii
-OR.B #imm,@(R0,GBR) 11001111iiiiiiii
-TAS.B @Rn 0100nnnn00011011
-TST #imm,R0 11001000iiiiiiii
-TST.B #imm,@(R0,GBR) 11001100iiiiiiii
-XOR #imm,R0 11001010iiiiiiii
-XOR.B #imm,@(R0,GBR) 11001110iiiiiiii
-SHLL2 Rn 0100nnnn00001000
-SHLR2 Rn 0100nnnn00001001
-SHLL8 Rn 0100nnnn00011000
-SHLR8 Rn 0100nnnn00011001
-SHLL16 Rn 0100nnnn00101000
-SHLR16 Rn 0100nnnn00101001
-LDC Rm,GBR 0100mmmm00011110
-LDC Rm,VBR 0100mmmm00101110
-LDS Rm,MACH 0100mmmm00001010
-LDS Rm,MACL 0100mmmm00011010
-LDS Rm,PR 0100mmmm00101010
-TRAPA #imm 11000011iiiiiiii
-*/
+// @(Rx,Ry)
+static int emit_indirect_indexed_read(int rx, int ry, int size)
+{
+ int a0, t;
+ rcache_clean();
+ a0 = rcache_get_reg_arg(0, rx);
+ t = rcache_get_reg(ry, RC_GR_READ);
+ emith_add_r_r(a0, t);
+ return emit_memhandler_read(size);
+}
+
+// Rwr -> @(Rx,Ry)
+static void emit_indirect_indexed_write(int rx, int ry, int wr, int size)
+{
+ int a0, t;
+ rcache_clean();
+ rcache_get_reg_arg(1, wr);
+ a0 = rcache_get_reg_arg(0, rx);
+ t = rcache_get_reg(ry, RC_GR_READ);
+ emith_add_r_r(a0, t);
+ emit_memhandler_write(size);
+}
+
#define DELAYED_OP \
delayed_op = 2
((op >> 8) & 0x0f)
#define CHECK_FX_LT(n) \
- if (GET_Fx() < n) \
+ if (GET_Fx() >= n) \
goto default_
static void *sh2_translate(SH2 *sh2, block_desc *other_block)
case 0x04: // MOV.B Rm,@(R0,Rn) 0000nnnnmmmm0100
case 0x05: // MOV.W Rm,@(R0,Rn) 0000nnnnmmmm0101
case 0x06: // MOV.L Rm,@(R0,Rn) 0000nnnnmmmm0110
- rcache_clean();
- tmp = rcache_get_reg_arg(0, SHR_R0);
- tmp2 = rcache_get_reg_arg(1, GET_Rm());
- tmp3 = rcache_get_reg(GET_Rn(), RC_GR_READ);
- emith_add_r_r(tmp, tmp3);
- emit_memhandler_write(op & 3);
+ emit_indirect_indexed_write(SHR_R0, GET_Rn(), GET_Rm(), op & 3);
goto end_op;
case 0x07:
// MUL.L Rm,Rn 0000nnnnmmmm0111
cycles = 1;
break;
case 2: // RTE 0000000000101011
- //emit_move_r_r(SHR_PC, SHR_PR);
- emit_move_r_imm32(SHR_PC, pc - 2);
- rcache_flush();
- emith_pass_arg_r(0, CONTEXT_REG);
- emith_pass_arg_imm(1, op);
- emith_call(sh2_do_op);
- emit_move_r_r(SHR_PPC, SHR_PC);
+ DELAYED_OP;
+ rcache_clean();
+ // pop PC
+ rcache_get_reg_arg(0, SHR_SP);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(SHR_PPC, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ rcache_clean();
+ // pop SR
+ tmp = rcache_get_reg_arg(0, SHR_SP);
+ emith_add_r_imm(tmp, 4);
+ tmp = emit_memhandler_read(2);
+ emith_write_sr(tmp);
+ rcache_free_tmp(tmp);
+ tmp = rcache_get_reg(SHR_SP, RC_GR_RMW);
+ emith_add_r_imm(tmp, 4*2);
test_irq = 1;
cycles += 3;
break;
case 0x0c: // MOV.B @(R0,Rm),Rn 0000nnnnmmmm1100
case 0x0d: // MOV.W @(R0,Rm),Rn 0000nnnnmmmm1101
case 0x0e: // MOV.L @(R0,Rm),Rn 0000nnnnmmmm1110
- rcache_clean();
- tmp = rcache_get_reg_arg(0, SHR_R0);
- tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
- emith_add_r_r(tmp, tmp2);
- tmp = emit_memhandler_read(op & 3);
+ tmp = emit_indirect_indexed_read(SHR_R0, GET_Rm(), op & 3);
tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
- rcache_free_tmp(tmp);
if ((op & 3) != 2) {
emith_sext(tmp2, tmp, (op & 1) ? 16 : 8);
} else
emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
goto end_op;
case 0x0f: // MAC.L @Rm+,@Rn+ 0000nnnnmmmm1111
// TODO
tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
emith_bic_r_imm(tmp, T);
emith_tst_r_r(tmp2, tmp3);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
goto end_op;
case 0x09: // AND Rm,Rn 0010nnnnmmmm1001
tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW);
emith_bic_r_imm(tmp2, T);
emith_tst_r_imm(tmp, 0x000000ff);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp2, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
emith_tst_r_imm(tmp, 0x0000ff00);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp2, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
emith_tst_r_imm(tmp, 0x00ff0000);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp2, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
emith_tst_r_imm(tmp, 0xff000000);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp2, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
rcache_free_tmp(tmp);
goto end_op;
case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101
switch (op & 0x07)
{
case 0x00: // CMP/EQ
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp);
break;
case 0x02: // CMP/HS
EMITH_SJMP_START(DCOND_LO);
tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW);
emith_bic_r_imm(tmp2, T);
emith_subf_r_imm(tmp, 1);
- EMITH_SJMP_START(DCOND_NE);
- emith_or_r_imm_c(DCOND_EQ, tmp2, T);
- EMITH_SJMP_END(DCOND_NE);
+ emit_or_t_if_eq(tmp2);
goto end_op;
}
goto default_;
tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
emith_add_r_imm(tmp, 4);
goto end_op;
+ case 0x08:
+ case 0x09:
+ switch (GET_Fx())
+ {
+ case 0:
+ // SHLL2 Rn 0100nnnn00001000
+ // SHLR2 Rn 0100nnnn00001001
+ tmp = 2;
+ break;
+ case 1:
+ // SHLL8 Rn 0100nnnn00011000
+ // SHLR8 Rn 0100nnnn00011001
+ tmp = 8;
+ break;
+ case 2:
+ // SHLL16 Rn 0100nnnn00101000
+ // SHLR16 Rn 0100nnnn00101001
+ tmp = 16;
+ break;
+ default:
+ goto default_;
+ }
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ if (op & 1) {
+ emith_lsr(tmp2, tmp2, tmp);
+ } else
+ emith_lsl(tmp2, tmp2, tmp);
+ goto end_op;
+ case 0x0a:
+ switch (GET_Fx())
+ {
+ case 0: // LDS Rm,MACH 0100mmmm00001010
+ tmp2 = SHR_MACH;
+ break;
+ case 1: // LDS Rm,MACL 0100mmmm00011010
+ tmp2 = SHR_MACL;
+ break;
+ case 2: // LDS Rm,PR 0100mmmm00101010
+ tmp2 = SHR_PR;
+ break;
+ default:
+ goto default_;
+ }
+ emit_move_r_r(tmp2, GET_Rn());
+ goto end_op;
case 0x0b:
- if ((op & 0xd0) != 0)
+ switch (GET_Fx())
+ {
+ case 0: // JSR @Rm 0100mmmm00001011
+ case 2: // JMP @Rm 0100mmmm00101011
+ DELAYED_OP;
+ if (!(op & 0x20))
+ emit_move_r_imm32(SHR_PR, pc + 2);
+ emit_move_r_r(SHR_PPC, (op >> 8) & 0x0f);
+ cycles++;
+ break;
+ case 1: // TAS.B @Rn 0100nnnn00011011
+ // XXX: is TAS working on 32X?
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp = emit_memhandler_read(0);
+ tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(tmp2, T);
+ emith_cmp_r_imm(tmp, 0);
+ emit_or_t_if_eq(tmp2);
+ rcache_clean();
+ emith_or_r_imm(tmp, 0x80);
+ tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ rcache_get_reg_arg(0, GET_Rn());
+ emit_memhandler_write(0);
+ cycles += 3;
+ break;
+ default:
goto default_;
- // JMP @Rm 0100mmmm00101011
- // JSR @Rm 0100mmmm00001011
- DELAYED_OP;
- if (!(op & 0x20))
- emit_move_r_imm32(SHR_PR, pc + 2);
- emit_move_r_r(SHR_PPC, (op >> 8) & 0x0f);
- cycles++;
+ }
goto end_op;
case 0x0e:
- if ((op & 0xf0) != 0)
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ switch (GET_Fx())
+ {
+ case 0: // LDC Rm,SR 0100mmmm00001110
+ tmp2 = SHR_SR;
+ break;
+ case 1: // LDC Rm,GBR 0100mmmm00011110
+ tmp2 = SHR_GBR;
+ break;
+ case 2: // LDC Rm,VBR 0100mmmm00101110
+ tmp2 = SHR_VBR;
+ break;
+ default:
goto default_;
- // LDC Rm,SR 0100mmmm00001110
- test_irq = 1;
- goto default_;
+ }
+ if (tmp2 == SHR_SR) {
+ emith_write_sr(tmp);
+ emit_move_r_imm32(SHR_PC, pc);
+ test_irq = 1;
+ } else {
+ tmp2 = rcache_get_reg(tmp2, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ }
+ goto end_op;
+ case 0x0f:
+ // MAC @Rm+,@Rn+ 0100nnnnmmmm1111
+ break; // TODO
}
goto default_;
+ /////////////////////////////////////////////
+ case 0x05:
+ // MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ emith_add_r_imm(tmp, (op & 0x0f) * 4);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+
+ /////////////////////////////////////////////
+ case 0x06:
+ switch (op & 0x0f)
+ {
+ case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000
+ case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001
+ case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010
+ case 0x04: // MOV.B @Rm+,Rn 0110nnnnmmmm0100
+ case 0x05: // MOV.W @Rm+,Rn 0110nnnnmmmm0101
+ case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rm());
+ tmp = emit_memhandler_read(op & 3);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ if ((op & 3) != 2) {
+ emith_sext(tmp2, tmp, (op & 1) ? 16 : 8);
+ } else
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ if ((op & 7) >= 4 && GET_Rn() != GET_Rm()) {
+ tmp = rcache_get_reg(GET_Rm(), RC_GR_RMW);
+ emith_add_r_imm(tmp, (1 << (op & 3)));
+ }
+ goto end_op;
+ case 0x03:
+ case 0x07 ... 0x0f:
+ tmp = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ switch (op & 0x0f)
+ {
+ case 0x03: // MOV Rm,Rn 0110nnnnmmmm0011
+ emith_move_r_r(tmp2, tmp);
+ break;
+ case 0x07: // NOT Rm,Rn 0110nnnnmmmm0111
+ emith_mvn_r_r(tmp2, tmp);
+ break;
+ case 0x08: // SWAP.B Rm,Rn 0110nnnnmmmm1000
+ tmp3 = tmp2;
+ if (tmp == tmp2)
+ tmp3 = rcache_get_tmp();
+ tmp4 = rcache_get_tmp();
+ emith_lsr(tmp3, tmp, 16);
+ emith_or_r_r_r_lsl(tmp3, tmp3, tmp, 24);
+ emith_and_r_r_imm(tmp4, tmp, 0xff00);
+ emith_or_r_r_r_lsl(tmp3, tmp3, tmp4, 8);
+ emith_rol(tmp2, tmp3, 16);
+ rcache_free_tmp(tmp4);
+ if (tmp == tmp2)
+ rcache_free_tmp(tmp3);
+ break;
+ case 0x09: // SWAP.W Rm,Rn 0110nnnnmmmm1001
+ emith_rol(tmp2, tmp, 16);
+ break;
+ case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010
+ tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_set_carry_sub(tmp3);
+ emith_negcf_r_r(tmp2, tmp);
+ emith_carry_to_t(tmp3, 1);
+ break;
+ case 0x0b: // NEG Rm,Rn 0110nnnnmmmm1011
+ emith_neg_r_r(tmp2, tmp);
+ break;
+ case 0x0c: // EXTU.B Rm,Rn 0110nnnnmmmm1100
+ emith_clear_msb(tmp2, tmp, 24);
+ break;
+ case 0x0d: // EXTU.W Rm,Rn 0110nnnnmmmm1101
+ emith_clear_msb(tmp2, tmp, 16);
+ break;
+ case 0x0e: // EXTS.B Rm,Rn 0110nnnnmmmm1110
+ emith_sext(tmp2, tmp, 8);
+ break;
+ case 0x0f: // EXTS.W Rm,Rn 0110nnnnmmmm1111
+ emith_sext(tmp2, tmp, 16);
+ break;
+ }
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x07:
+ // ADD #imm,Rn 0111nnnniiiiiiii
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ if (op & 0x80) { // adding negative
+ emith_sub_r_imm(tmp, -op & 0xff);
+ } else
+ emith_add_r_imm(tmp, op & 0xff);
+ goto end_op;
+
/////////////////////////////////////////////
case 0x08:
- switch (op & 0x0f00) {
- // BT/S label 10001101dddddddd
- case 0x0d00:
- // BF/S label 10001111dddddddd
- case 0x0f00:
+ switch (op & 0x0f00)
+ {
+ case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd
+ case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ tmp2 = rcache_get_reg_arg(1, SHR_R0);
+ tmp3 = (op & 0x100) >> 8;
+ emith_add_r_imm(tmp, (op & 0x0f) << tmp3);
+ emit_memhandler_write(tmp3);
+ goto end_op;
+ case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd
+ case 0x0500: // MOV.W @(disp,Rm),R0 10000101mmmmdddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ tmp3 = (op & 0x100) >> 8;
+ emith_add_r_imm(tmp, (op & 0x0f) << tmp3);
+ tmp = emit_memhandler_read(tmp3);
+ tmp2 = rcache_get_reg(0, RC_GR_WRITE);
+ emith_sext(tmp2, tmp, 8 << tmp3);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii
+ // XXX: could use cmn
+ tmp = rcache_get_tmp();
+ tmp2 = rcache_get_reg(0, RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_move_r_imm_s8(tmp, op & 0xff);
+ emith_bic_r_imm(tmp3, T);
+ emith_cmp_r_r(tmp2, tmp);
+ emit_or_t_if_eq(tmp3);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0d00: // BT/S label 10001101dddddddd
+ case 0x0f00: // BF/S label 10001111dddddddd
DELAYED_OP;
cycles--;
// fallthrough
- // BT label 10001001dddddddd
- case 0x0900:
- // BF label 10001011dddddddd
- case 0x0b00: {
+ case 0x0900: // BT label 10001001dddddddd
+ case 0x0b00: { // BF label 10001011dddddddd
// jmp_cond ~ cond when guest doesn't jump
int jmp_cond = (op & 0x0200) ? DCOND_NE : DCOND_EQ;
int insn_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE;
EMITH_SJMP_END(jmp_cond);
cycles += 2;
if (!delayed_op)
- goto end_block;
+ goto end_block_btf;
goto end_op;
}}
goto default_;
+ /////////////////////////////////////////////
+ case 0x09:
+ // MOV.W @(disp,PC),Rn 1001nnnndddddddd
+ // TODO
+ goto default_;
+
/////////////////////////////////////////////
case 0x0a:
// BRA label 1010dddddddddddd
emit_move_r_imm32(SHR_PR, pc + 2);
goto do_bra;
+ /////////////////////////////////////////////
+ case 0x0c:
+ switch (op & 0x0f00)
+ {
+ case 0x0000: // MOV.B R0,@(disp,GBR) 11000000dddddddd
+ case 0x0100: // MOV.W R0,@(disp,GBR) 11000001dddddddd
+ case 0x0200: // MOV.L R0,@(disp,GBR) 11000010dddddddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, SHR_GBR);
+ tmp2 = rcache_get_reg_arg(1, SHR_R0);
+ tmp3 = (op & 0x300) >> 8;
+ emith_add_r_imm(tmp, (op & 0xff) << tmp3);
+ emit_memhandler_write(tmp3);
+ goto end_op;
+ case 0x0400: // MOV.B @(disp,GBR),R0 11000100dddddddd
+ case 0x0500: // MOV.W @(disp,GBR),R0 11000101dddddddd
+ case 0x0600: // MOV.L @(disp,GBR),R0 11000110dddddddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, SHR_GBR);
+ tmp3 = (op & 0x300) >> 8;
+ emith_add_r_imm(tmp, (op & 0xff) << tmp3);
+ tmp = emit_memhandler_read(tmp3);
+ tmp2 = rcache_get_reg(0, RC_GR_WRITE);
+ if (tmp3 != 2) {
+ emith_sext(tmp2, tmp, 8 << tmp3);
+ } else
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0300: // TRAPA #imm 11000011iiiiiiii
+ tmp = rcache_get_reg(SHR_SP, RC_GR_RMW);
+ emith_sub_r_imm(tmp, 4*2);
+ rcache_clean();
+ // push SR
+ tmp = rcache_get_reg_arg(0, SHR_SP);
+ emith_add_r_imm(tmp, 4);
+ tmp = rcache_get_reg_arg(1, SHR_SR);
+ emith_clear_msb(tmp, tmp, 20);
+ emit_memhandler_write(2);
+ // push PC
+ rcache_get_reg_arg(0, SHR_SP);
+ tmp = rcache_get_tmp_arg(1);
+ emith_move_r_imm(tmp, pc);
+ emit_memhandler_write(2);
+ // obtain new PC
+ tmp = rcache_get_reg_arg(0, SHR_VBR);
+ emith_add_r_imm(tmp, (op & 0xff) * 4);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ cycles += 7;
+ goto end_block_btf;
+ case 0x0700: // MOVA @(disp,PC),R0 11000111dddddddd
+ emit_move_r_imm32(SHR_R0, (pc + (op & 0xff) * 4 + 2) & ~3);
+ goto end_op;
+ case 0x0800: // TST #imm,R0 11001000iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_READ);
+ tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(tmp2, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(tmp2);
+ goto end_op;
+ case 0x0900: // AND #imm,R0 11001001iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_and_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0a00: // XOR #imm,R0 11001010iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_eor_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0b00: // OR #imm,R0 11001011iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_or_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ tmp2 = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(tmp2, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(tmp2);
+ rcache_free_tmp(tmp);
+ cycles += 2;
+ goto end_op;
+ case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_and_r_imm(tmp, op & 0xff);
+ emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0);
+ cycles += 2;
+ goto end_op;
+ case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_eor_r_imm(tmp, op & 0xff);
+ emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0);
+ cycles += 2;
+ goto end_op;
+ case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_or_r_imm(tmp, op & 0xff);
+ emit_indirect_indexed_write(SHR_R0, SHR_GBR, tmp, 0);
+ cycles += 2;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x0d:
+ // MOV.L @(disp,PC),Rn 1101nnnndddddddd
+ // TODO
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x0e:
+ // MOV #imm,Rn 1110nnnniiiiiiii
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_move_r_imm_s8(tmp, op & 0xff);
+ goto end_op;
+
default:
default_:
emit_move_r_imm32(SHR_PC, pc - 2);
do_host_disasm(tcache_id);
}
-end_block:
+ // delayed_op means some kind of branch - PC already handled
+ if (!delayed_op)
+ emit_move_r_imm32(SHR_PC, pc);
+
+end_block_btf:
this_block->end_addr = pc;
// mark memory blocks as containing compiled code
void __attribute__((noinline)) sh2_drc_dispatcher(SH2 *sh2)
{
+ // TODO: need to handle self-caused interrupts
+ sh2_test_irq(sh2);
+
while (((signed int)sh2->sr >> 12) > 0)
{
void *block = NULL;
block_desc *bd = NULL;
// FIXME: must avoid doing it so often..
- sh2_test_irq(sh2);
+ //sh2_test_irq(sh2);
// we have full block id tables for data_array and RAM
// BIOS goes to data_array table too
sh2_smc_rm_block(drcblk, p, block_tables[1 + cpuid], a);
}
-void sh2_execute(SH2 *sh2, int cycles)
+void sh2_execute(SH2 *sh2c, int cycles)
{
- sh2->cycles_aim += cycles;
- cycles = sh2->cycles_aim - sh2->cycles_done;
+ sh2 = sh2c; // XXX
+
+ sh2c->cycles_aim += cycles;
+ cycles = sh2c->cycles_aim - sh2c->cycles_done;
// cycles are kept in SHR_SR unused bits (upper 20)
- sh2->sr &= 0x3f3;
- sh2->sr |= cycles << 12;
- sh2_drc_dispatcher(sh2);
+ sh2c->sr &= 0x3f3;
+ sh2c->sr |= cycles << 12;
+ sh2_drc_dispatcher(sh2c);
- sh2->cycles_done += cycles - ((signed int)sh2->sr >> 12);
+ sh2c->cycles_done += cycles - ((signed int)sh2c->sr >> 12);
}
static void REGPARM(1) sh2_test_irq(SH2 *sh2)
notaz.gp2x.de / picodrive.git / blobdiff