mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 07:17:45 -04:00
892b1dd258
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@357 be3aeb3a-fb24-0410-a615-afba39da0efa
813 lines
18 KiB
C
813 lines
18 KiB
C
// 187 blocks, 12072 bytes
|
|
// 14 IRAM blocks
|
|
|
|
#include "../../PicoInt.h"
|
|
|
|
#define TCACHE_SIZE (256*1024)
|
|
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
|
|
#define ssp1601_run ssp1601_run_local
|
|
|
|
static unsigned int interp_get_pc(void);
|
|
|
|
#define GET_PC interp_get_pc
|
|
#define GET_PPC_OFFS() (interp_get_pc()*2 - 2)
|
|
#define SET_PC(d) { had_jump = 1; rPC = d; } /* must return to dispatcher after this */
|
|
//#define GET_PC() (PC - (unsigned short *)svp->iram_rom)
|
|
//#define GET_PPC_OFFS() ((unsigned int)PC - (unsigned int)svp->iram_rom - 2)
|
|
//#define SET_PC(d) PC = (unsigned short *)svp->iram_rom + d
|
|
|
|
#include "ssp16.c"
|
|
|
|
// -----------------------------------------------------
|
|
|
|
// 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,
|
|
0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L,
|
|
0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
|
|
0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L,
|
|
0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL,
|
|
0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
|
|
0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL,
|
|
0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L,
|
|
0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L,
|
|
0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL,
|
|
0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L,
|
|
0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
|
|
0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L,
|
|
0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL,
|
|
0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
|
|
0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL,
|
|
0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL,
|
|
0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
|
|
0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L,
|
|
0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L,
|
|
0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL,
|
|
0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L,
|
|
0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL,
|
|
0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
|
|
0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L,
|
|
0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL,
|
|
0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
|
|
0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L,
|
|
0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L,
|
|
0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
|
|
0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L,
|
|
0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL,
|
|
0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
|
|
0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L,
|
|
0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L,
|
|
0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
|
|
0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL,
|
|
0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L,
|
|
0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
|
|
0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L,
|
|
0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L,
|
|
0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
|
|
0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L,
|
|
0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L,
|
|
0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
|
|
0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL,
|
|
0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L,
|
|
0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
|
|
0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL,
|
|
0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L,
|
|
0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
|
|
0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L,
|
|
0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL,
|
|
0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
|
|
0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL,
|
|
0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L,
|
|
0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
|
|
0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL,
|
|
0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L,
|
|
0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
|
|
0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L,
|
|
0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL,
|
|
0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
|
|
0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL
|
|
};
|
|
|
|
static u32 chksum_crc32 (unsigned char *block, unsigned int length)
|
|
{
|
|
register u32 crc;
|
|
unsigned long i;
|
|
|
|
crc = 0xFFFFFFFF;
|
|
for (i = 0; i < length; i++)
|
|
{
|
|
crc = ((crc >> 8) & 0x00FFFFFF) ^ crctable[(crc ^ *block++) & 0xFF];
|
|
}
|
|
return (crc ^ 0xFFFFFFFF);
|
|
}
|
|
|
|
//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
|
|
|
|
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)
|
|
{
|
|
unsigned int op, op1, icount = 0;
|
|
void *ret;
|
|
|
|
ret = tcache_ptr;
|
|
|
|
//printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<1);
|
|
for (;;)
|
|
{
|
|
icount++;
|
|
op = PROGRAM(pc++);
|
|
op1 = op >> 9;
|
|
// need immediate?
|
|
if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) {
|
|
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/4) {
|
|
printf("tcache overflow!\n");
|
|
fflush(stdout);
|
|
exit(1);
|
|
}
|
|
|
|
// stats
|
|
nblocks++;
|
|
//if (pc >= 0x400)
|
|
printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*4);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------
|
|
|
|
int ssp1601_dyn_init(void)
|
|
{
|
|
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;
|
|
}
|
|
|
|
|
|
void ssp1601_dyn_reset(ssp1601_t *ssp)
|
|
{
|
|
ssp1601_reset_local(ssp);
|
|
}
|
|
|
|
|
|
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)
|
|
{
|
|
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];
|
|
}
|
|
|
|
had_jump = 0;
|
|
|
|
//printf("enter @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
|
|
g_cycles = 0;
|
|
ssp1601_run2(iPC);
|
|
cycles += g_cycles;
|
|
/*
|
|
if (!had_jump) {
|
|
// no jumps
|
|
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];
|
|
block_table[pc_old] = NULL;
|
|
nblocks--;
|
|
}
|
|
if (pc_old >= 0x400 && rPC < 0x400)
|
|
{
|
|
int i, crc = chksum_crc32(svp->iram_rom, 0x800);
|
|
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);
|
|
}
|
|
|