#include "../../PicoInt.h"
#define TCACHE_SIZE (256*1024)
-static unsigned short *block_table[0x5090/2];
-static unsigned short *tcache = NULL;
-static unsigned short *tcache_ptr = NULL;
+static unsigned int *block_table[0x5090/2];
+static unsigned int *block_table_iram[15][0x800/2];
+static unsigned int *tcache = NULL;
+static unsigned int *tcache_ptr = NULL;
static int had_jump = 0;
static int nblocks = 0;
+static int iram_context = 0;
#define EMBED_INTERPRETER
#define ssp1601_reset ssp1601_reset_local
// -----------------------------------------------------
+// ld d, s
+static void op00(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ if (op == 0) return; // nop
+ if (op == ((SSP_A<<4)|SSP_P)) { // A <- P
+ // not sure. MAME claims that only hi word is transfered.
+ read_P(); // update P
+ rA32 = rP.v;
+ }
+ else
+ {
+ tmpv = REG_READ(op & 0x0f);
+ REG_WRITE((op & 0xf0) >> 4, tmpv);
+ }
+}
+
+// ld d, (ri)
+static void op01(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv);
+}
+
+// ld (ri), s
+static void op02(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = REG_READ((op & 0xf0) >> 4); ptr1_write(op, tmpv);
+}
+
+// ldi d, imm
+static void op04(unsigned int op, unsigned int imm)
+{
+ REG_WRITE((op & 0xf0) >> 4, imm);
+}
+
+// ld d, ((ri))
+static void op05(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv);
+}
+
+// ldi (ri), imm
+static void op06(unsigned int op, unsigned int imm)
+{
+ ptr1_write(op, imm);
+}
+
+// ld adr, a
+static void op07(unsigned int op, unsigned int imm)
+{
+ ssp->RAM[op & 0x1ff] = rA;
+}
+
+// ld d, ri
+static void op09(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[(op&3)|((op>>6)&4)]; REG_WRITE((op & 0xf0) >> 4, tmpv);
+}
+
+// ld ri, s
+static void op0a(unsigned int op, unsigned int imm)
+{
+ rIJ[(op&3)|((op>>6)&4)] = REG_READ((op & 0xf0) >> 4);
+}
+
+// ldi ri, simm (also op0d op0e op0f)
+static void op0c(unsigned int op, unsigned int imm)
+{
+ rIJ[(op>>8)&7] = op;
+}
+
+// call cond, addr
+static void op24(unsigned int op, unsigned int imm)
+{
+ int cond = 0;
+ do {
+ COND_CHECK
+ if (cond) { int new_PC = imm; write_STACK(GET_PC()); write_PC(new_PC); }
+ }
+ while (0);
+}
+
+// ld d, (a)
+static void op25(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ((unsigned short *)svp->iram_rom)[rA]; REG_WRITE((op & 0xf0) >> 4, tmpv);
+}
+
+// bra cond, addr
+static void op26(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ int cond = 0;
+ COND_CHECK
+ if (cond) write_PC(imm);
+ }
+ while(0);
+}
+
+// mod cond, op
+static void op48(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ int cond = 0;
+ COND_CHECK
+ if (cond) {
+ switch (op & 7) {
+ case 2: rA32 = (signed int)rA32 >> 1; break; // shr (arithmetic)
+ case 3: rA32 <<= 1; break; // shl
+ case 6: rA32 = -(signed int)rA32; break; // neg
+ case 7: if ((int)rA32 < 0) rA32 = -(signed int)rA32; break; // abs
+ default: elprintf(EL_SVP|EL_ANOMALY, "ssp FIXME: unhandled mod %i @ %04x",
+ op&7, GET_PPC_OFFS());
+ }
+ UPD_ACC_ZN // ?
+ }
+ }
+ while(0);
+}
+
+// mpys?
+static void op1b(unsigned int op, unsigned int imm)
+{
+ read_P(); // update P
+ rA32 -= rP.v; // maybe only upper word?
+ UPD_ACC_ZN // there checking flags after this
+ rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
+ rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
+}
+
+// mpya (rj), (ri), b
+static void op4b(unsigned int op, unsigned int imm)
+{
+ read_P(); // update P
+ rA32 += rP.v; // confirmed to be 32bit
+ UPD_ACC_ZN // ?
+ rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
+ rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
+}
+
+// mld (rj), (ri), b
+static void op5b(unsigned int op, unsigned int imm)
+{
+ rA32 = 0;
+ rST &= 0x0fff; // ?
+ rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
+ rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
+}
+
+// OP a, s
+static void op10(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_SUBA32); tmpv = REG_READ(op & 0x0f); OP_SUBA(tmpv);
+ }
+ while(0);
+}
+
+static void op30(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_CMPA32); tmpv = REG_READ(op & 0x0f); OP_CMPA(tmpv);
+ }
+ while(0);
+}
+
+static void op40(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_ADDA32); tmpv = REG_READ(op & 0x0f); OP_ADDA(tmpv);
+ }
+ while(0);
+}
+
+static void op50(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_ANDA32); tmpv = REG_READ(op & 0x0f); OP_ANDA(tmpv);
+ }
+ while(0);
+}
+
+static void op60(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_ORA32 ); tmpv = REG_READ(op & 0x0f); OP_ORA (tmpv);
+ }
+ while(0);
+}
+
+static void op70(unsigned int op, unsigned int imm)
+{
+ do
+ {
+ unsigned int tmpv;
+ OP_CHECK32(OP_EORA32); tmpv = REG_READ(op & 0x0f); OP_EORA(tmpv);
+ }
+ while(0);
+}
+
+// OP a, (ri)
+static void op11(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_SUBA(tmpv);
+}
+
+static void op31(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_CMPA(tmpv);
+}
+
+static void op41(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_ADDA(tmpv);
+}
+
+static void op51(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_ANDA(tmpv);
+}
+
+static void op61(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_ORA (tmpv);
+}
+
+static void op71(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr1_read(op); OP_EORA(tmpv);
+}
+
+// OP a, adr
+static void op03(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_LDA (tmpv);
+}
+
+static void op13(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_SUBA(tmpv);
+}
+
+static void op33(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_CMPA(tmpv);
+}
+
+static void op43(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_ADDA(tmpv);
+}
+
+static void op53(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_ANDA(tmpv);
+}
+
+static void op63(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_ORA (tmpv);
+}
+
+static void op73(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ssp->RAM[op & 0x1ff]; OP_EORA(tmpv);
+}
+
+// OP a, imm
+static void op14(unsigned int op, unsigned int imm)
+{
+ OP_SUBA(imm);
+}
+
+static void op34(unsigned int op, unsigned int imm)
+{
+ OP_CMPA(imm);
+}
+
+static void op44(unsigned int op, unsigned int imm)
+{
+ OP_ADDA(imm);
+}
+
+static void op54(unsigned int op, unsigned int imm)
+{
+ OP_ANDA(imm);
+}
+
+static void op64(unsigned int op, unsigned int imm)
+{
+ OP_ORA (imm);
+}
+
+static void op74(unsigned int op, unsigned int imm)
+{
+ OP_EORA(imm);
+}
+
+// OP a, ((ri))
+static void op15(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_SUBA(tmpv);
+}
+
+static void op35(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_CMPA(tmpv);
+}
+
+static void op45(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_ADDA(tmpv);
+}
+
+static void op55(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_ANDA(tmpv);
+}
+
+static void op65(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_ORA (tmpv);
+}
+
+static void op75(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = ptr2_read(op); OP_EORA(tmpv);
+}
+
+// OP a, ri
+static void op19(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_SUBA(tmpv);
+}
+
+static void op39(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_CMPA(tmpv);
+}
+
+static void op49(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_ADDA(tmpv);
+}
+
+static void op59(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_ANDA(tmpv);
+}
+
+static void op69(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_ORA (tmpv);
+}
+
+static void op79(unsigned int op, unsigned int imm)
+{
+ unsigned int tmpv;
+ tmpv = rIJ[IJind]; OP_EORA(tmpv);
+}
+
+// OP simm
+static void op1c(unsigned int op, unsigned int imm)
+{
+ OP_SUBA(op & 0xff);
+}
+
+static void op3c(unsigned int op, unsigned int imm)
+{
+ OP_CMPA(op & 0xff);
+}
+
+static void op4c(unsigned int op, unsigned int imm)
+{
+ OP_ADDA(op & 0xff);
+}
+
+static void op5c(unsigned int op, unsigned int imm)
+{
+ OP_ANDA(op & 0xff);
+}
+
+static void op6c(unsigned int op, unsigned int imm)
+{
+ OP_ORA (op & 0xff);
+}
+
+static void op7c(unsigned int op, unsigned int imm)
+{
+ OP_EORA(op & 0xff);
+}
+
+typedef void (in_func)(unsigned int op, unsigned int imm);
+
+static in_func *in_funcs[0x80] =
+{
+ op00, op01, op02, op03, op04, op05, op06, op07,
+ NULL, op09, op0a, NULL, op0c, op0c, op0c, op0c,
+ op10, op11, NULL, op13, op14, op15, NULL, NULL,
+ NULL, op19, NULL, op1b, op1c, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, op24, op25, op26, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ op30, op31, NULL, op33, op34, op35, NULL, NULL,
+ NULL, op39, NULL, NULL, op3c, NULL, NULL, NULL,
+ op40, op41, NULL, op43, op44, op45, NULL, NULL,
+ op48, op49, NULL, op4b, op4c, NULL, NULL, NULL,
+ op50, op51, NULL, op53, op54, op55, NULL, NULL,
+ NULL, op59, NULL, op5b, op5c, NULL, NULL, NULL,
+ op60, op61, NULL, op63, op64, op65, NULL, NULL,
+ NULL, op69, NULL, NULL, op6c, NULL, NULL, NULL,
+ op70, op71, NULL, op73, op74, op75, NULL, NULL,
+ NULL, op79, NULL, NULL, op7c, NULL, NULL, NULL,
+};
+
+// -----------------------------------------------------
+
static unsigned int crctable[256] =
{
0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
return (crc ^ 0xFFFFFFFF);
}
-static int iram_crcs[32] = { 0, };
+//static int iram_crcs[32] = { 0, };
// -----------------------------------------------------
+static unsigned char iram_context_map[] =
+{
+ 0, 0, 0, 0, 1, 0, 0, 0, // 04
+ 0, 0, 0, 0, 0, 0, 2, 0, // 0e
+ 0, 0, 0, 0, 0, 3, 0, 4, // 15 17
+ 5, 0, 0, 6, 0, 7, 0, 0, // 18 1b 1d
+ 8, 9, 0, 0, 0,10, 0, 0, // 20 21 25
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0,11, 0, 0,12, 0, 0, // 32 35
+ 13,14, 0, 0, 0, 0, 0, 0 // 38 39
+};
+
+static unsigned int checksums[] =
+{
+ 0,
+ 0xfa9ddfb2,
+ 0x229c80b6,
+ 0x3af0c3d3,
+ 0x98fc4552,
+ 0x5ecacdbc,
+ 0xa6931962,
+ 0x53930b10,
+ 0x69524552,
+ 0xcb1ccdaf,
+ 0x995068c7,
+ 0x48b97f4d,
+ 0xe8c61b74,
+ 0xafa2e81a,
+ 0x4e3e071a
+};
+
+
+static int get_iram_context(void)
+{
+ unsigned char *ir = (unsigned char *)svp->iram_rom;
+ int val1, val = ir[0x083^1] + ir[0x4FA^1] + ir[0x5F7^1] + ir[0x47B^1];
+ int crc = chksum_crc32(svp->iram_rom, 0x800);
+ val1 = iram_context_map[(val>>1)&0x3f];
+
+ if (crc != checksums[val1] || val1 == 0) {
+ printf("val: %02x PC=%04x\n", (val>>1)&0x3f, rPC);
+ elprintf(EL_ANOMALY, "bad crc: %08x vs %08x", crc, checksums[val1]);
+ //debug_dump2file(name, svp->iram_rom, 0x800);
+ exit(1);
+ }
+ elprintf(EL_ANOMALY, "iram_context: %02i", val1);
+ return val1;
+}
+
#define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x]
static u32 interp_get_pc(void)
{
+#if 0
unsigned short *pc1 = PC;
int i;
+
while (pc1[-1] != 0xfe01) pc1--; // goto current block start
- for (i = 0; i < 0x5090/2; i++)
- if (block_table[i] == pc1) break;
- if (i == 0x5090/2) {
- printf("block not found!\n");
- exit(1);
+ if (rPC >= 0x800/2)
+ {
+ for (i = 0; i < 0x5090/2; i++)
+ if (block_table[i] == pc1) break;
+ if (i == 0x5090/2) goto fail;
+ }
+ else
+ {
+ for (i = 0; i < 0x800/2; i++)
+ if (block_table_iram[iram_context][i] == pc1) break;
+ if (i == 0x800/2) goto fail;
}
return i + (PC - pc1);
+fail:
+ printf("block not found!\n");
+ exit(1);
+#else
+ return rPC;
+#endif
}
-static void translate_block(int pc)
+static void *translate_block(int pc)
{
- int tmp, op, op1, icount = 0;
+ unsigned int op, op1, icount = 0;
+ void *ret;
- block_table[pc] = tcache_ptr;
+ ret = tcache_ptr;
//printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<1);
for (;;)
{
+ icount++;
op = PROGRAM(pc++);
op1 = op >> 9;
- *tcache_ptr++ = op;
- icount++;
// need immediate?
if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) {
- tmp = PROGRAM(pc++);
- *tcache_ptr++ = tmp; // immediate
+ op |= PROGRAM(pc++) << 16; // immediate
+ }
+ *tcache_ptr++ = op;
+ *tcache_ptr = (unsigned int) in_funcs[op1];
+ if (*tcache_ptr == 0) {
+ printf("NULL func! op=%08x (%02x)\n", op, op1);
+ exit(1);
}
+ tcache_ptr++;
if (op1 == 0x24 || op1 == 0x26 || // call, bra
((op1 == 0 || op1 == 1 || op1 == 4 || op1 == 5 || op1 == 9 || op1 == 0x25) &&
(op & 0xf0) == 0x60)) { // ld PC
break;
}
}
+ *tcache_ptr++ = 0xfe01;
*tcache_ptr++ = 0xfe01; // end of block
//printf(" %i inst\n", icount);
- if (tcache_ptr - tcache > TCACHE_SIZE/2) {
+ if (tcache_ptr - tcache > TCACHE_SIZE/4) {
printf("tcache overflow!\n");
fflush(stdout);
exit(1);
// stats
nblocks++;
- if (pc >= 0x400) printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*2);
+ //if (pc >= 0x400)
+ printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*4);
+
+ return ret;
}
tcache = tcache_ptr = malloc(TCACHE_SIZE);
memset(tcache, 0, sizeof(TCACHE_SIZE));
memset(block_table, 0, sizeof(block_table));
+ memset(block_table_iram, 0, sizeof(block_table_iram));
+ *tcache_ptr++ = 0xfe01;
*tcache_ptr++ = 0xfe01;
return 0;
}
+static void ssp1601_run2(unsigned int *iPC)
+{
+ in_func *func;
+ unsigned int op, op1, imm;
+ while (*iPC != 0xfe01)
+ {
+ rPC++;
+ op = *iPC & 0xffff;
+ imm = *iPC++ >> 16;
+ op1 = op >> 9;
+ if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) rPC++;
+ PC = ((unsigned short *)&op) + 1; /* needed for interpreter */
+
+ func = (in_func *) *iPC++;
+ func(op, imm);
+ g_cycles--;
+ }
+}
+
+
void ssp1601_dyn_run(int cycles)
{
while (cycles > 0)
{
- int pc_old = rPC;
- if (block_table[rPC] == NULL)
- translate_block(rPC);
+ unsigned int *iPC;
+ //int pc_old = rPC;
+ if (rPC < 0x800/2)
+ {
+ if (iram_dirty) {
+ iram_context = get_iram_context();
+ iram_dirty--;
+ }
+ if (block_table_iram[iram_context][rPC] == NULL)
+ block_table_iram[iram_context][rPC] = translate_block(rPC);
+ iPC = block_table_iram[iram_context][rPC];
+ }
+ else
+ {
+ if (block_table[rPC] == NULL)
+ block_table[rPC] = translate_block(rPC);
+ iPC = block_table[rPC];
+ }
- PC = block_table[rPC];
had_jump = 0;
//printf("enter @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
- ssp1601_run_local(0x10000);
- cycles -= 0x10000 - g_cycles;
-
+ g_cycles = 0;
+ ssp1601_run2(iPC);
+ cycles += g_cycles;
+/*
if (!had_jump) {
// no jumps
- rPC += (PC - block_table[pc_old]) - 1;
+ if (pc_old < 0x800/2)
+ rPC += (PC - block_table_iram[iram_context][pc_old]) - 1;
+ else
+ rPC += (PC - block_table[pc_old]) - 1;
}
+*/
//printf("end @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
-
+/*
if (pc_old < 0x400) {
// flush IRAM cache
tcache_ptr = block_table[pc_old];
for (i = 0; i < 32; i++)
if (iram_crcs[i] == crc) break;
if (i == 32) {
+ char name[32];
for (i = 0; i < 32 && iram_crcs[i]; i++);
iram_crcs[i] = crc;
printf("%i IRAMs\n", i+1);
+ sprintf(name, "ir%08x.bin", crc);
+ debug_dump2file(name, svp->iram_rom, 0x800);
}
+ printf("CRC %08x %08x\n", crc, iram_id);
}
+*/
}
// debug_dump2file("tcache.bin", tcache, (tcache_ptr - tcache) << 1);
// exit(1);
notaz.gp2x.de / picodrive.git / blobdiff