static int iram_context = 0;
#ifndef ARM
-#define DUMP_BLOCK 0x40b0
+#define DUMP_BLOCK 0x84a
unsigned int tcache[512*1024];
void regfile_load(void){}
void regfile_store(void){}
}
breg = 1;
}
- EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // str r0, [r1, (op&0x7f)<<1]
+ EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1]
}
/* handle RAM bank pointer modifiers. Nothing is trashed. */
}
}
+// SSP_GR0, SSP_X, SSP_Y, SSP_A,
+// SSP_ST, SSP_STACK, SSP_PC, SSP_P,
+//@ r4: XXYY
+//@ r5: A
+//@ r6: STACK and emu flags
+//@ r7: SSP context
+//@ r10: P
+
+// write r0 to general reg handlers. Trashes r1
+static void tr_r0_unhandled(void)
+{
+ printf("unhandled\n");
+ exit(1);
+}
+
+static void tr_r0_to_GR0(void)
+{
+ // do nothing
+}
+
+static void tr_r0_to_X(void)
+{
+ EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16
+ EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16
+ EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16
+}
+
+static void tr_r0_to_Y(void)
+{
+ EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16
+ EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16
+ EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16
+}
+
+static void tr_r0_to_A(void)
+{
+ EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16
+ EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsl #16 @ AL
+ EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16
+ hostreg_r[0] = 0x20000;
+}
+
+static void tr_r0_to_ST(void)
+{
+ // VR doesn't need much accuracy here..
+ EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67
+ EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK
+ EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4
+ hostreg_r[1] = -1;
+}
+
+static void tr_r0_to_STACK(void)
+{
+ // 448
+ EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400
+ EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048
+ EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #26
+ EOP_STRH_SIMPLE(0, 1); // strh r0, [r1]
+ EOP_ADD_IMM(6, 6, 24/2, 0x20); // add r6, r6, #1<<29
+ hostreg_r[1] = -1;
+}
+
+static void tr_r0_to_PC(void)
+{
+ EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16
+ EOP_STR_IMM(0,7,0x400+6*4); // str r0, [r7, #(0x400+6*8)]
+ hostreg_r[1] = -1;
+}
+
+typedef void (tr_write_func)(void);
+
+static tr_write_func *tr_write_funcs[8] =
+{
+ tr_r0_to_GR0,
+ tr_r0_to_X,
+ tr_r0_to_Y,
+ tr_r0_to_A,
+ tr_r0_to_ST,
+ tr_r0_to_STACK,
+ tr_r0_to_PC,
+ tr_r0_unhandled
+};
+
static int translate_op(unsigned int op, int *pc, int imm)
{
// ld a, adr
case 0x03:
tr_bank_read(op&0x1ff);
- EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16
- EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsl #16 @ AL
- EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16
+ tr_r0_to_A();
const_regb &= ~CRREG_A;
hostreg_r[0] = 0x20000;
ret++; break;
+ // ldi d, imm
+ case 0x04:
+ tmpv = (op & 0xf0) >> 4;
+ if (tmpv < 8)
+ {
+ tr_mov16(0, imm);
+ tr_write_funcs[tmpv]();
+ const_regs.gr[tmpv].h = imm;
+ const_regb |= 1 << tmpv;
+ ret++; break;
+ }
+ else if (tmpv == 0xe && (PROGRAM(*pc) >> 9) == 4)
+ {
+ // programming PMC..
+ (*pc)++;
+ tmpv = imm | (PROGRAM((*pc)++) << 16);
+ emit_mov_const(0, tmpv);
+ EOP_LDR_IMM(1,7,0x484); // ldr r0, [r7, #0x484] // emu_status
+ EOP_STR_IMM(0,7,0x400+14*4); // PMC
+ // TODO: do this only on reads
+ if (tmpv == 0x187f04) { // fe08
+ EOP_LDR_IMM(0,7,0x490); // dram_ptr
+ EOP_ADD_IMM(0,0,24/2,0xfe); // add r0, r0, #0xfe00
+ EOP_LDRH_IMM(0,0,8); // ldrh r0, [r0, #8]
+ EOP_TST_REG_SIMPLE(0,0);
+ EOP_C_DOP_IMM(A_COND_EQ,A_OP_ADD,0,11,11,22/2,1); // add r11, r11, #1024
+ EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,SSP_WAIT_30FE08>>8); // orr r1, r1, #SSP_WAIT_30FE08
+ }
+ EOP_ORR_IMM(1,1,0,SSP_PMC_SET); // orr r1, r1, #SSP_PMC_SET
+ EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status
+ hostreg_r[0] = hostreg_r[1] = -1;
+ ret += 2; break;
+ }
+ else
+ return -1; /* TODO.. */
+
+
// ldi (ri), imm
case 0x06:
- //tmpv = *PC++; ptr1_write(op, tmpv); break;
// int t = (op&3) | ((op>>6)&4) | ((op<<1)&0x18);
tr_mov16(0, imm);
if ((op&3) == 3)
void ssp1601_dyn_reset(ssp1601_t *ssp)
{
ssp1601_reset_local(ssp);
+ ssp->rom_ptr = (unsigned int) Pico.rom;
+ ssp->iram_ptr = (unsigned int) svp->iram_rom;
+ ssp->dram_ptr = (unsigned int) svp->dram;
}
void ssp1601_dyn_run(int cycles)
{
+ if (ssp->emu_status & SSP_WAIT_MASK) return;
+ //{ printf("%i wait\n", Pico.m.frame_count); return; }
+ //printf("%i %04x\n", Pico.m.frame_count, rPC<<1);
+
#ifdef DUMP_BLOCK
rPC = DUMP_BLOCK >> 1;
#endif
notaz.gp2x.de / picodrive.git / blobdiff