/*
* vim:shiftwidth=2:expandtab
*/
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "compiler.h"
#include "../drc/cmn.h"
+// debug stuff {
#ifndef DRC_DEBUG
#define DRC_DEBUG 0
#endif
#else
#define do_host_disasm(x)
#endif
+// } debug
#define BLOCK_CYCLE_LIMIT 100
#define MAX_BLOCK_SIZE (BLOCK_CYCLE_LIMIT * 6 * 6)
// we have 3 translation cache buffers, split from one drc/cmn buffer.
// BIOS shares tcache with data array because it's only used for init
// and can be discarded early
+// XXX: need to tune sizes
static const int tcache_sizes[3] = {
DRC_TCACHE_SIZE * 6 / 8, // ROM, DRAM
DRC_TCACHE_SIZE / 8, // BIOS, data array in master sh2
} temp_reg_t;
// note: reg_temp[] must have at least the amount of
-// registers used by handlers in worst case (currently 3?)
+// registers used by handlers in worst case (currently 4)
#ifdef ARM
#include "../drc/emit_arm.c"
static const int reg_map_g2h[] = {
+ 4, 5, 6, 7,
+ 8, -1, -1, -1,
-1, -1, -1, -1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
+ -1, -1, -1, 9,
+ -1, -1, -1, 10,
-1, -1, -1, -1,
};
#include "../drc/emit_x86.c"
static const int reg_map_g2h[] = {
+ xSI,-1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
- -1, -1, -1, -1,
- -1, -1, -1, -1,
+ -1, -1, -1, xDI,
-1, -1, -1, -1,
};
-// ax, cx, dx are usually temporaries
+// ax, cx, dx are usually temporaries by convention
static temp_reg_t reg_temp[] = {
{ xAX, },
+ { xBX, },
{ xCX, },
{ xDX, },
};
#define Q 0x00000100
#define M 0x00000200
-typedef enum {
- SHR_R0 = 0, SHR_R15 = 15,
- SHR_PC, SHR_PPC, SHR_PR, SHR_SR,
- SHR_GBR, SHR_VBR, SHR_MACH, SHR_MACL,
-} sh2_reg_e;
+#define Q_SHIFT 8
+#define M_SHIFT 9
typedef struct block_desc_ {
u32 addr; // SH2 PC address
#define HASH_MASK (MAX_HASH_ENTRIES - 1)
static void **hash_table;
-extern void sh2_drc_entry(SH2 *sh2, void *block);
-extern void sh2_drc_exit(void);
+static void REGPARM(2) (*sh2_drc_entry)(const void *block, SH2 *sh2);
+static void (*sh2_drc_exit)(void);
// tmp
extern void REGPARM(2) sh2_do_op(SH2 *sh2, int opcode);
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
-XTRCT Rm,Rn 0010nnnnmmmm1101
-ADD Rm,Rn 0011nnnnmmmm1100
-ADD #imm,Rn 0111nnnniiiiiiii
-ADDC Rm,Rn 0011nnnnmmmm1110
-ADDV Rm,Rn 0011nnnnmmmm1111
-CMP/EQ #imm,R0 10001000iiiiiiii
-CMP/EQ Rm,Rn 0011nnnnmmmm0000
-CMP/HS Rm,Rn 0011nnnnmmmm0010
-CMP/GE Rm,Rn 0011nnnnmmmm0011
-CMP/HI Rm,Rn 0011nnnnmmmm0110
-CMP/GT Rm,Rn 0011nnnnmmmm0111
-CMP/PZ Rn 0100nnnn00010001
-CMP/PL Rn 0100nnnn00010101
-CMP/ST Rm,Rn 0010nnnnmmmm1100
-DIV1 Rm,Rn 0011nnnnmmmm0100
-DMULS. Rm,Rn 0011nnnnmmmm1101
-DMULU.L Rm,Rn 0011nnnnmmmm0101
-EXTS.B Rm,Rn 0110nnnnmmmm1110
-EXTS.W Rm,Rn 0110nnnnmmmm1111
-EXTU.B Rm,Rn 0110nnnnmmmm1100
-EXTU.W Rm,Rn 0110nnnnmmmm1101
-MAC @Rm+,@Rn+ 0100nnnnmmmm1111
-MULS.W Rm,Rn 0010nnnnmmmm1111
-MULU.W Rm,Rn 0010nnnnmmmm1110
-NEG Rm,Rn 0110nnnnmmmm1011
-NEGC Rm,Rn 0110nnnnmmmm1010
-SUB Rm,Rn 0011nnnnmmmm1000
-SUBC Rm,Rn 0011nnnnmmmm1010
-SUBV Rm,Rn 0011nnnnmmmm1011
-AND Rm,Rn 0010nnnnmmmm1001
-AND #imm,R0 11001001iiiiiiii
-AND.B #imm,@(R0,GBR) 11001101iiiiiiii
-NOT Rm,Rn 0110nnnnmmmm0111
-OR Rm,Rn 0010nnnnmmmm1011
-OR #imm,R0 11001011iiiiiiii
-OR.B #imm,@(R0,GBR) 11001111iiiiiiii
-TAS.B @Rn 0100nnnn00011011
-TST Rm,Rn 0010nnnnmmmm1000
-TST #imm,R0 11001000iiiiiiii
-TST.B #imm,@(R0,GBR) 11001100iiiiiiii
-XOR Rm,Rn 0010nnnnmmmm1010
-XOR #imm,R0 11001010iiiiiiii
-XOR.B #imm,@(R0,GBR) 11001110iiiiiiii
-ROTL Rn 0100nnnn00000100
-ROTR Rn 0100nnnn00000101
-ROTCL Rn 0100nnnn00100100
-ROTCR Rn 0100nnnn00100101
-SHAL Rn 0100nnnn00100000
-SHAR Rn 0100nnnn00100001
-SHLL Rn 0100nnnn00000000
-SHLR Rn 0100nnnn00000001
-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
-LDC.L @Rm+,GBR 0100mmmm00010111
-LDC.L @Rm+,VBR 0100mmmm00100111
-LDS Rm,MACH 0100mmmm00001010
-LDS Rm,MACL 0100mmmm00011010
-LDS Rm,PR 0100mmmm00101010
-LDS.L @Rm+,MACH 0100mmmm00000110
-LDS.L @Rm+,MACL 0100mmmm00010110
-LDS.L @Rm+,PR 0100mmmm00100110
-STC.L SR,@–Rn 0100nnnn00000011
-STC.L GBR,@–Rn 0100nnnn00010011
-STC.L VBR,@–Rn 0100nnnn00100011
-STS.L MACH,@–Rn 0100nnnn00000010
-STS.L MACL,@–Rn 0100nnnn00010010
-STS.L PR,@–Rn 0100nnnn00100010
-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);
+}
+
+// tmp_wr -> @(Rx,Ry)
+static void emit_indirect_indexed_write(int tmp_wr, int rx, int ry, int size)
+{
+ int a0, t;
+ rcache_clean();
+ t = rcache_get_tmp_arg(1);
+ emith_move_r_r(t, tmp_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);
+}
+
+// read @Rn, @rm
+static void emit_indirect_read_double(u32 *rnr, u32 *rmr, int rn, int rm, int size)
+{
+ int tmp;
+
+ rcache_clean();
+ rcache_get_reg_arg(0, rn);
+ tmp = emit_memhandler_read(size);
+ emith_ctx_write(tmp, offsetof(SH2, drc_tmp));
+ rcache_free_tmp(tmp);
+ tmp = rcache_get_reg(rn, RC_GR_RMW);
+ emith_add_r_imm(tmp, 1 << size);
+
+ rcache_clean();
+ rcache_get_reg_arg(0, rm);
+ *rmr = emit_memhandler_read(size);
+ *rnr = rcache_get_tmp();
+ emith_ctx_read(*rnr, offsetof(SH2, drc_tmp));
+ tmp = rcache_get_reg(rm, RC_GR_RMW);
+ emith_add_r_imm(tmp, 1 << size);
+}
+
+static void emit_do_static_regs(int is_write, int tmpr)
+{
+ int i, r, count;
+
+ for (i = 0; i < ARRAY_SIZE(reg_map_g2h); i++) {
+ r = reg_map_g2h[i];
+ if (r == -1)
+ continue;
+
+ for (count = 1; i < ARRAY_SIZE(reg_map_g2h) - 1; i++, r++) {
+ if (reg_map_g2h[i + 1] != r + 1)
+ break;
+ count++;
+ }
+
+ if (count > 1) {
+ // i, r point to last item
+ if (is_write)
+ emith_ctx_write_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr);
+ else
+ emith_ctx_read_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr);
+ } else {
+ if (is_write)
+ emith_ctx_write(r, i * 4);
+ else
+ emith_ctx_read(r, i * 4);
+ }
+ }
+}
+
+static void sh2_generate_utils(void)
+{
+ int ctx, blk, tmp;
+
+ host_arg2reg(blk, 0);
+ host_arg2reg(ctx, 1);
+ host_arg2reg(tmp, 2);
+
+ // sh2_drc_entry(void *block, SH2 *sh2)
+ sh2_drc_entry = (void *)tcache_ptr;
+ emith_sh2_drc_entry();
+ emith_move_r_r(CONTEXT_REG, ctx); // move ctx, arg1
+ emit_do_static_regs(0, tmp);
+ emith_jump_reg(blk); // jump arg0
+
+ // sh2_drc_exit(void)
+ sh2_drc_exit = (void *)tcache_ptr;
+ emit_do_static_regs(1, tmp);
+ emith_sh2_drc_exit();
+
+ rcache_invalidate();
+}
#define DELAYED_OP \
delayed_op = 2
#define GET_Rn() \
((op >> 8) & 0x0f)
-#define CHECK_FX_GT_3() \
- if (GET_Fx() > 3) \
+#define CHECK_FX_LT(n) \
+ if (GET_Fx() >= n) \
goto default_
static void *sh2_translate(SH2 *sh2, block_desc *other_block)
int op, delayed_op = 0, test_irq = 0;
int tcache_id = 0, blkid = 0;
int cycles = 0;
- u32 tmp, tmp2, tmp3;
+ u32 tmp, tmp2, tmp3, tmp4, sr;
// validate PC
tmp = sh2->pc >> 29;
switch ((op >> 12) & 0x0f)
{
+ /////////////////////////////////////////////
case 0x00:
switch (op & 0x0f)
{
default:
goto default_;
}
- tmp2 = rcache_get_reg(tmp2, RC_GR_READ);
- emith_move_r_r(tmp, tmp2);
+ tmp3 = rcache_get_reg(tmp2, RC_GR_READ);
+ emith_move_r_r(tmp, tmp3);
+ if (tmp2 == SHR_SR)
+ emith_clear_msb(tmp, tmp, 20); // reserved bits defined by ISA as 0
goto end_op;
case 0x03:
CHECK_UNHANDLED_BITS(0xd0);
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);
+ tmp = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emit_indirect_indexed_write(tmp, SHR_R0, GET_Rn(), op & 3);
goto end_op;
case 0x07:
// MUL.L Rm,Rn 0000nnnnmmmm0111
switch (GET_Fx())
{
case 0: // CLRT 0000000000001000
- tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
- emith_bic_r_imm(tmp, T);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
break;
case 1: // SETT 0000000000011000
- tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
- emith_or_r_imm(tmp, T);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_or_r_imm(sr, T);
break;
case 2: // CLRMAC 0000000000101000
tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
break;
case 1: // DIV0U 0000000000011001
CHECK_UNHANDLED_BITS(0xf00);
- tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
- emith_bic_r_imm(tmp, M|Q|T);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, M|Q|T);
break;
case 2: // MOVT Rn 0000nnnn00101001
- tmp = rcache_get_reg(SHR_SR, RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
- emith_clear_msb(tmp2, tmp, 31);
+ emith_clear_msb(tmp2, sr, 31);
break;
default:
goto default_;
switch (GET_Fx())
{
case 0: // STS MACH,Rn 0000nnnn00001010
- tmp2 = rcache_get_reg(SHR_MACH, RC_GR_READ);
+ tmp2 = SHR_MACH;
break;
case 1: // STS MACL,Rn 0000nnnn00011010
- tmp2 = rcache_get_reg(SHR_MACL, RC_GR_READ);
+ tmp2 = SHR_MACL;
break;
case 2: // STS PR,Rn 0000nnnn00101010
- tmp2 = rcache_get_reg(SHR_PR, RC_GR_READ);
+ tmp2 = SHR_PR;
break;
default:
goto default_;
}
+ tmp2 = rcache_get_reg(tmp2, RC_GR_READ);
emith_move_r_r(tmp, tmp2);
goto end_op;
case 0x0b:
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
- break;
+ emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 2);
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW);
+ /* MS 16 MAC bits unused if saturated */
+ emith_tst_r_imm(sr, S);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_clear_msb_c(DCOND_NE, tmp4, tmp4, 16);
+ EMITH_SJMP_END(DCOND_EQ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); // might evict SR
+ emith_mula_s64(tmp3, tmp4, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ); // reget just in case
+ emith_tst_r_imm(sr, S);
+
+ EMITH_JMP_START(DCOND_EQ);
+ emith_asr(tmp, tmp4, 15);
+ emith_cmp_r_imm(tmp, -1); // negative overflow (0x80000000..0xffff7fff)
+ EMITH_SJMP_START(DCOND_GE);
+ emith_move_r_imm_c(DCOND_LT, tmp4, 0x8000);
+ emith_move_r_imm_c(DCOND_LT, tmp3, 0x0000);
+ EMITH_SJMP_END(DCOND_GE);
+ emith_cmp_r_imm(tmp, 0); // positive overflow (0x00008000..0x7fffffff)
+ EMITH_SJMP_START(DCOND_LE);
+ emith_move_r_imm_c(DCOND_GT, tmp4, 0x00007fff);
+ emith_move_r_imm_c(DCOND_GT, tmp3, 0xffffffff);
+ EMITH_SJMP_END(DCOND_LE);
+ EMITH_JMP_END(DCOND_EQ);
+
+ rcache_free_tmp(tmp);
+ cycles += 3;
+ goto end_op;
}
goto default_;
+ /////////////////////////////////////////////
case 0x01:
// MOV.L Rm,@(disp,Rn) 0001nnnnmmmmdddd
rcache_clean();
emit_memhandler_write(op & 3);
goto end_op;
case 0x07: // DIV0S Rm,Rn 0010nnnnmmmm0111
- tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
- emith_bic_r_imm(tmp, M|Q|T);
+ emith_bic_r_imm(sr, M|Q|T);
emith_tst_r_imm(tmp2, (1<<31));
EMITH_SJMP_START(DCOND_EQ);
- emith_or_r_imm_c(DCOND_NE, tmp, Q);
+ emith_or_r_imm_c(DCOND_NE, sr, Q);
EMITH_SJMP_END(DCOND_EQ);
emith_tst_r_imm(tmp3, (1<<31));
EMITH_SJMP_START(DCOND_EQ);
- emith_or_r_imm_c(DCOND_NE, tmp, M);
+ emith_or_r_imm_c(DCOND_NE, sr, M);
EMITH_SJMP_END(DCOND_EQ);
emith_teq_r_r(tmp2, tmp3);
EMITH_SJMP_START(DCOND_PL);
- emith_or_r_imm_c(DCOND_MI, tmp, T);
+ emith_or_r_imm_c(DCOND_MI, sr, T);
EMITH_SJMP_END(DCOND_PL);
goto end_op;
+ case 0x08: // TST Rm,Rn 0010nnnnmmmm1000
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_r(tmp2, tmp3);
+ emit_or_t_if_eq(sr);
+ goto end_op;
+ case 0x09: // AND Rm,Rn 0010nnnnmmmm1001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_and_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0a: // XOR Rm,Rn 0010nnnnmmmm1010
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_eor_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0b: // OR Rm,Rn 0010nnnnmmmm1011
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_or_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0c: // CMP/STR Rm,Rn 0010nnnnmmmm1100
+ tmp = rcache_get_tmp();
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_eor_r_r_r(tmp, tmp2, tmp3);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, 0x000000ff);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0x0000ff00);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0x00ff0000);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0xff000000);
+ emit_or_t_if_eq(tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_lsr(tmp, tmp, 16);
+ emith_or_r_r_lsl(tmp, tmp2, 16);
+ goto end_op;
+ case 0x0e: // MULU.W Rm,Rn 0010nnnnmmmm1110
+ case 0x0f: // MULS.W Rm,Rn 0010nnnnmmmm1111
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ if (op & 1) {
+ emith_sext(tmp, tmp2, 16);
+ } else
+ emith_clear_msb(tmp, tmp2, 16);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp2 = rcache_get_tmp();
+ if (op & 1) {
+ emith_sext(tmp2, tmp3, 16);
+ } else
+ emith_clear_msb(tmp2, tmp3, 16);
+ emith_mul(tmp, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+// FIXME: causes timing issues in Doom?
+// cycles++;
+ goto end_op;
}
goto default_;
+ /////////////////////////////////////////////
+ case 0x03:
+ switch (op & 0x0f)
+ {
+ case 0x00: // CMP/EQ Rm,Rn 0011nnnnmmmm0000
+ case 0x02: // CMP/HS Rm,Rn 0011nnnnmmmm0010
+ case 0x03: // CMP/GE Rm,Rn 0011nnnnmmmm0011
+ case 0x06: // CMP/HI Rm,Rn 0011nnnnmmmm0110
+ case 0x07: // CMP/GT Rm,Rn 0011nnnnmmmm0111
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_r(tmp2, tmp3);
+ switch (op & 0x07)
+ {
+ case 0x00: // CMP/EQ
+ emit_or_t_if_eq(sr);
+ break;
+ case 0x02: // CMP/HS
+ EMITH_SJMP_START(DCOND_LO);
+ emith_or_r_imm_c(DCOND_HS, sr, T);
+ EMITH_SJMP_END(DCOND_LO);
+ break;
+ case 0x03: // CMP/GE
+ EMITH_SJMP_START(DCOND_LT);
+ emith_or_r_imm_c(DCOND_GE, sr, T);
+ EMITH_SJMP_END(DCOND_LT);
+ break;
+ case 0x06: // CMP/HI
+ EMITH_SJMP_START(DCOND_LS);
+ emith_or_r_imm_c(DCOND_HI, sr, T);
+ EMITH_SJMP_END(DCOND_LS);
+ break;
+ case 0x07: // CMP/GT
+ EMITH_SJMP_START(DCOND_LE);
+ emith_or_r_imm_c(DCOND_GT, sr, T);
+ EMITH_SJMP_END(DCOND_LE);
+ break;
+ }
+ goto end_op;
+ case 0x04: // DIV1 Rm,Rn 0011nnnnmmmm0100
+ // Q1 = carry(Rn = (Rn << 1) | T)
+ // if Q ^ M
+ // Q2 = carry(Rn += Rm)
+ // else
+ // Q2 = carry(Rn -= Rm)
+ // Q = M ^ Q1 ^ Q2
+ // T = (Q == M) = !(Q ^ M) = !(Q1 ^ Q2)
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 0);
+ emith_adcf_r_r(tmp2, tmp2);
+ emith_tpush_carry(sr, 0); // keep Q1 in T for now
+ tmp4 = rcache_get_tmp();
+ emith_and_r_r_imm(tmp4, sr, M);
+ emith_eor_r_r_lsr(sr, tmp4, M_SHIFT - Q_SHIFT); // Q ^= M
+ rcache_free_tmp(tmp4);
+ // add or sub, invert T if carry to get Q1 ^ Q2
+ // in: (Q ^ M) passed in Q, Q1 in T
+ emith_sh2_div1_step(tmp2, tmp3, sr);
+ emith_bic_r_imm(sr, Q);
+ emith_tst_r_imm(sr, M);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_or_r_imm_c(DCOND_NE, sr, Q); // Q = M
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_tst_r_imm(sr, T);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_eor_r_imm_c(DCOND_NE, sr, Q); // Q = M ^ Q1 ^ Q2
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_eor_r_imm(sr, T); // T = !(Q1 ^ Q2)
+ goto end_op;
+ case 0x05: // DMULU.L Rm,Rn 0011nnnnmmmm0101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE);
+ emith_mul_u64(tmp3, tmp4, tmp, tmp2);
+ goto end_op;
+ case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000
+ case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ if (op & 4) {
+ emith_add_r_r(tmp, tmp2);
+ } else
+ emith_sub_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0a: // SUBC Rm,Rn 0011nnnnmmmm1010
+ case 0x0e: // ADDC Rm,Rn 0011nnnnmmmm1110
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (op & 4) { // adc
+ emith_tpop_carry(sr, 0);
+ emith_adcf_r_r(tmp, tmp2);
+ emith_tpush_carry(sr, 0);
+ } else {
+ emith_tpop_carry(sr, 1);
+ emith_sbcf_r_r(tmp, tmp2);
+ emith_tpush_carry(sr, 1);
+ }
+ goto end_op;
+ case 0x0b: // SUBV Rm,Rn 0011nnnnmmmm1011
+ case 0x0f: // ADDV Rm,Rn 0011nnnnmmmm1111
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ if (op & 4) {
+ emith_addf_r_r(tmp, tmp2);
+ } else
+ emith_subf_r_r(tmp, tmp2);
+ EMITH_SJMP_START(DCOND_VC);
+ emith_or_r_imm_c(DCOND_VS, sr, T);
+ EMITH_SJMP_END(DCOND_VC);
+ goto end_op;
+ case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE);
+ emith_mul_s64(tmp3, tmp4, tmp, tmp2);
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
case 0x04:
- switch (op & 0x0f) {
+ switch (op & 0x0f)
+ {
case 0x00:
- if ((op & 0xf0) != 0x10)
- goto default_;
- // DT Rn 0100nnnn00010000
- if (p32x_sh2_read16(pc, sh2) == 0x8bfd) { // BF #-2
- emith_sh2_dtbf_loop();
+ switch (GET_Fx())
+ {
+ case 0: // SHLL Rn 0100nnnn00000000
+ case 2: // SHAL Rn 0100nnnn00100000
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 0); // dummy
+ emith_lslf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
goto end_op;
+ case 1: // DT Rn 0100nnnn00010000
+ if (p32x_sh2_read16(pc, sh2) == 0x8bfd) { // BF #-2
+ emith_sh2_dtbf_loop();
+ goto end_op;
+ }
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_subf_r_imm(tmp, 1);
+ emit_or_t_if_eq(sr);
+ goto end_op;
+ }
+ goto default_;
+ case 0x01:
+ switch (GET_Fx())
+ {
+ case 0: // SHLR Rn 0100nnnn00000001
+ case 2: // SHAR Rn 0100nnnn00100001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 0); // dummy
+ if (op & 0x20) {
+ emith_asrf(tmp, tmp, 1);
+ } else
+ emith_lsrf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 1: // CMP/PZ Rn 0100nnnn00010001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ EMITH_SJMP_START(DCOND_LT);
+ emith_or_r_imm_c(DCOND_GE, sr, T);
+ EMITH_SJMP_END(DCOND_LT);
+ goto end_op;
+ }
+ goto default_;
+ case 0x02:
+ case 0x03:
+ switch (op & 0x3f)
+ {
+ case 0x02: // STS.L MACH,@–Rn 0100nnnn00000010
+ tmp = SHR_MACH;
+ break;
+ case 0x12: // STS.L MACL,@–Rn 0100nnnn00010010
+ tmp = SHR_MACL;
+ break;
+ case 0x22: // STS.L PR,@–Rn 0100nnnn00100010
+ tmp = SHR_PR;
+ break;
+ case 0x03: // STC.L SR,@–Rn 0100nnnn00000011
+ tmp = SHR_SR;
+ break;
+ case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011
+ tmp = SHR_GBR;
+ break;
+ case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011
+ tmp = SHR_VBR;
+ break;
+ default:
+ goto default_;
}
- tmp = rcache_get_reg((op >> 8) & 0x0f, RC_GR_RMW);
- 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);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ emith_sub_r_imm(tmp2, 4);
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp3 = rcache_get_reg_arg(1, tmp);
+ if (tmp == SHR_SR)
+ emith_clear_msb(tmp3, tmp3, 20); // reserved bits defined by ISA as 0
+ emit_memhandler_write(2);
goto end_op;
+ case 0x04:
+ case 0x05:
+ switch (op & 0x3f)
+ {
+ case 0x04: // ROTL Rn 0100nnnn00000100
+ case 0x05: // ROTR Rn 0100nnnn00000101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 0); // dummy
+ if (op & 1) {
+ emith_rorf(tmp, tmp, 1);
+ } else
+ emith_rolf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 0x24: // ROTCL Rn 0100nnnn00100100
+ case 0x25: // ROTCR Rn 0100nnnn00100101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 0);
+ if (op & 1) {
+ emith_rorcf(tmp);
+ } else
+ emith_rolcf(tmp);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 0x15: // CMP/PL Rn 0100nnnn00010101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ EMITH_SJMP_START(DCOND_LE);
+ emith_or_r_imm_c(DCOND_GT, sr, T);
+ EMITH_SJMP_END(DCOND_LE);
+ goto end_op;
+ }
+ goto default_;
+ case 0x06:
case 0x07:
- if ((op & 0xf0) != 0)
+ switch (op & 0x3f)
+ {
+ case 0x06: // LDS.L @Rm+,MACH 0100mmmm00000110
+ tmp = SHR_MACH;
+ break;
+ case 0x16: // LDS.L @Rm+,MACL 0100mmmm00010110
+ tmp = SHR_MACL;
+ break;
+ case 0x26: // LDS.L @Rm+,PR 0100mmmm00100110
+ tmp = SHR_PR;
+ break;
+ case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111
+ tmp = SHR_SR;
+ break;
+ case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111
+ tmp = SHR_GBR;
+ break;
+ case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111
+ tmp = SHR_VBR;
+ break;
+ default:
goto default_;
- // LDC.L @Rm+,SR 0100mmmm00000111
- test_irq = 1;
- goto default_;
+ }
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp2 = emit_memhandler_read(2);
+ if (tmp == SHR_SR) {
+ emith_write_sr(tmp2);
+ test_irq = 1;
+ } else {
+ tmp = rcache_get_reg(tmp, RC_GR_WRITE);
+ emith_move_r_r(tmp, tmp2);
+ }
+ rcache_free_tmp(tmp2);
+ 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);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ emit_or_t_if_eq(sr);
+ 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);
+ 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
+ emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 1);
+ emith_sext(tmp, tmp, 16);
+ emith_sext(tmp2, tmp2, 16);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW);
+ emith_mula_s64(tmp3, tmp4, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+ // XXX: MACH should be untouched when S is set?
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ emith_tst_r_imm(sr, S);
+ EMITH_JMP_START(DCOND_EQ);
+
+ emith_asr(tmp, tmp3, 31);
+ emith_eorf_r_r(tmp, tmp4); // tmp = ((signed)macl >> 31) ^ mach
+ EMITH_JMP_START(DCOND_EQ);
+ emith_move_r_imm(tmp3, 0x80000000);
+ emith_tst_r_r(tmp4, tmp4);
+ EMITH_SJMP_START(DCOND_MI);
+ emith_sub_r_imm_c(DCOND_PL, tmp3, 1); // positive
+ EMITH_SJMP_END(DCOND_MI);
+ EMITH_JMP_END(DCOND_EQ);
+
+ EMITH_JMP_END(DCOND_EQ);
+ rcache_free_tmp(tmp);
+ cycles += 2;
+ goto end_op;
}
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_lsl(tmp3, tmp, 24);
+ emith_and_r_r_imm(tmp4, tmp, 0xff00);
+ emith_or_r_r_lsl(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
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_tpop_carry(sr, 1);
+ emith_negcf_r_r(tmp2, tmp);
+ emith_tpush_carry(sr, 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);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_move_r_imm_s8(tmp, op & 0xff);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_r(tmp2, tmp);
+ emit_or_t_if_eq(sr);
+ 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
+ rcache_clean();
+ tmp = rcache_get_tmp_arg(0);
+ emith_move_r_imm(tmp, pc + (op & 0xff) * 2 + 2);
+ tmp = emit_memhandler_read(1);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_sext(tmp2, tmp, 16);
+ rcache_free_tmp(tmp);
+ goto end_op;
+
+ /////////////////////////////////////////////
case 0x0a:
// BRA label 1010dddddddddddd
DELAYED_OP;
cycles++;
break;
+ /////////////////////////////////////////////
case 0x0b:
// BSR label 1011dddddddddddd
DELAYED_OP;
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);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(sr);
+ 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);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(sr);
+ 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);
+ goto end_rmw_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);
+ goto end_rmw_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);
+ end_rmw_op:
+ tmp2 = rcache_get_tmp_arg(1);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ tmp3 = rcache_get_reg_arg(0, SHR_GBR);
+ tmp4 = rcache_get_reg(SHR_R0, RC_GR_READ);
+ emith_add_r_r(tmp3, tmp4);
+ emit_memhandler_write(0);
+ cycles += 2;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x0d:
+ // MOV.L @(disp,PC),Rn 1101nnnndddddddd
+ rcache_clean();
+ tmp = rcache_get_tmp_arg(0);
+ emith_move_r_imm(tmp, (pc + (op & 0xff) * 4 + 2) & ~3);
+ 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 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_:
+ elprintf(EL_ANOMALY, "%csh2 drc: unhandled op %04x @ %08x",
+ sh2->is_slave ? 's' : 'm', op, pc - 2);
+#ifdef DRC_DEBUG_INTERP
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);
+#endif
break;
}
emit_move_r_r(SHR_PC, SHR_PPC);
if (test_irq && delayed_op != 2) {
+ if (!delayed_op)
+ emit_move_r_imm32(SHR_PC, pc);
rcache_flush();
emith_pass_arg_r(0, CONTEXT_REG);
emith_call(sh2_test_irq);
- break;
+ goto end_block_btf;
}
if (delayed_op == 1)
break;
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
if (bd != NULL)
bd->refcount++;
#endif
- sh2_drc_entry(sh2, block);
+ sh2_drc_entry(block, sh2);
}
}
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)
if (block_tables[0] == NULL)
return -1;
+ tcache_ptr = tcache;
+ sh2_generate_utils();
+#ifdef ARM
+ cache_flush_d_inval_i(tcache, tcache_ptr);
+#endif
+
memset(block_counts, 0, sizeof(block_counts));
- tcache_bases[0] = tcache_ptrs[0] = tcache;
+ tcache_bases[0] = tcache_ptrs[0] = tcache_ptr;
for (i = 1; i < ARRAY_SIZE(block_tables); i++) {
block_tables[i] = block_tables[i - 1] + block_max_counts[i - 1];
#if (DRC_DEBUG & 2)
for (i = 0; i < ARRAY_SIZE(block_tables); i++)
tcache_dsm_ptrs[i] = tcache_bases[i];
+ // disasm the utils
+ tcache_dsm_ptrs[0] = tcache;
+ do_host_disasm(0);
#endif
#if (DRC_DEBUG & 1)
hash_collisions = 0;
notaz.gp2x.de / picodrive.git / blobdiff