mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
compiler work, last(?) C version
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@357 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
df143b366c
commit
892b1dd258
2 changed files with 526 additions and 37 deletions
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@ -4,10 +4,10 @@
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#include "../../PicoInt.h"
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#define TCACHE_SIZE (256*1024)
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static unsigned short *block_table[0x5090/2];
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static unsigned short *block_table_iram[15][0x800/2];
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static unsigned short *tcache = NULL;
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static unsigned short *tcache_ptr = NULL;
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static unsigned int *block_table[0x5090/2];
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static unsigned int *block_table_iram[15][0x800/2];
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static unsigned int *tcache = NULL;
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static unsigned int *tcache_ptr = NULL;
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static int had_jump = 0;
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static int nblocks = 0;
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@ -30,6 +30,463 @@ static unsigned int interp_get_pc(void);
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// -----------------------------------------------------
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// ld d, s
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static void op00(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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if (op == 0) return; // nop
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if (op == ((SSP_A<<4)|SSP_P)) { // A <- P
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// not sure. MAME claims that only hi word is transfered.
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read_P(); // update P
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rA32 = rP.v;
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}
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else
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{
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tmpv = REG_READ(op & 0x0f);
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REG_WRITE((op & 0xf0) >> 4, tmpv);
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}
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}
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// ld d, (ri)
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static void op01(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv);
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}
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// ld (ri), s
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static void op02(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = REG_READ((op & 0xf0) >> 4); ptr1_write(op, tmpv);
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}
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// ldi d, imm
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static void op04(unsigned int op, unsigned int imm)
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{
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REG_WRITE((op & 0xf0) >> 4, imm);
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}
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// ld d, ((ri))
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static void op05(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv);
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}
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// ldi (ri), imm
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static void op06(unsigned int op, unsigned int imm)
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{
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ptr1_write(op, imm);
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}
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// ld adr, a
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static void op07(unsigned int op, unsigned int imm)
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{
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ssp->RAM[op & 0x1ff] = rA;
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}
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// ld d, ri
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static void op09(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[(op&3)|((op>>6)&4)]; REG_WRITE((op & 0xf0) >> 4, tmpv);
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}
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// ld ri, s
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static void op0a(unsigned int op, unsigned int imm)
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{
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rIJ[(op&3)|((op>>6)&4)] = REG_READ((op & 0xf0) >> 4);
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}
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// ldi ri, simm (also op0d op0e op0f)
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static void op0c(unsigned int op, unsigned int imm)
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{
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rIJ[(op>>8)&7] = op;
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}
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// call cond, addr
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static void op24(unsigned int op, unsigned int imm)
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{
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int cond = 0;
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do {
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COND_CHECK
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if (cond) { int new_PC = imm; write_STACK(GET_PC()); write_PC(new_PC); }
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}
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while (0);
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}
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// ld d, (a)
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static void op25(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ((unsigned short *)svp->iram_rom)[rA]; REG_WRITE((op & 0xf0) >> 4, tmpv);
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}
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// bra cond, addr
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static void op26(unsigned int op, unsigned int imm)
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{
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do
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{
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int cond = 0;
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COND_CHECK
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if (cond) write_PC(imm);
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}
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while(0);
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}
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// mod cond, op
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static void op48(unsigned int op, unsigned int imm)
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{
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do
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{
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int cond = 0;
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COND_CHECK
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if (cond) {
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switch (op & 7) {
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case 2: rA32 = (signed int)rA32 >> 1; break; // shr (arithmetic)
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case 3: rA32 <<= 1; break; // shl
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case 6: rA32 = -(signed int)rA32; break; // neg
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case 7: if ((int)rA32 < 0) rA32 = -(signed int)rA32; break; // abs
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default: elprintf(EL_SVP|EL_ANOMALY, "ssp FIXME: unhandled mod %i @ %04x",
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op&7, GET_PPC_OFFS());
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}
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UPD_ACC_ZN // ?
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}
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}
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while(0);
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}
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// mpys?
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static void op1b(unsigned int op, unsigned int imm)
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{
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read_P(); // update P
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rA32 -= rP.v; // maybe only upper word?
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UPD_ACC_ZN // there checking flags after this
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rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
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rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
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}
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// mpya (rj), (ri), b
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static void op4b(unsigned int op, unsigned int imm)
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{
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read_P(); // update P
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rA32 += rP.v; // confirmed to be 32bit
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UPD_ACC_ZN // ?
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rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
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rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
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}
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// mld (rj), (ri), b
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static void op5b(unsigned int op, unsigned int imm)
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{
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rA32 = 0;
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rST &= 0x0fff; // ?
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rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?)
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rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj
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}
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// OP a, s
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static void op10(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_SUBA32); tmpv = REG_READ(op & 0x0f); OP_SUBA(tmpv);
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}
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while(0);
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}
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static void op30(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_CMPA32); tmpv = REG_READ(op & 0x0f); OP_CMPA(tmpv);
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}
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while(0);
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}
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static void op40(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_ADDA32); tmpv = REG_READ(op & 0x0f); OP_ADDA(tmpv);
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}
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while(0);
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}
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static void op50(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_ANDA32); tmpv = REG_READ(op & 0x0f); OP_ANDA(tmpv);
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}
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while(0);
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}
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static void op60(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_ORA32 ); tmpv = REG_READ(op & 0x0f); OP_ORA (tmpv);
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}
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while(0);
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}
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static void op70(unsigned int op, unsigned int imm)
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{
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do
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{
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unsigned int tmpv;
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OP_CHECK32(OP_EORA32); tmpv = REG_READ(op & 0x0f); OP_EORA(tmpv);
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}
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while(0);
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}
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// OP a, (ri)
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static void op11(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_SUBA(tmpv);
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}
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static void op31(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_CMPA(tmpv);
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}
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static void op41(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_ADDA(tmpv);
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}
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static void op51(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_ANDA(tmpv);
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}
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static void op61(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_ORA (tmpv);
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}
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static void op71(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr1_read(op); OP_EORA(tmpv);
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}
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// OP a, adr
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static void op03(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_LDA (tmpv);
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}
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static void op13(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_SUBA(tmpv);
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}
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static void op33(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_CMPA(tmpv);
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}
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static void op43(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_ADDA(tmpv);
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}
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static void op53(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_ANDA(tmpv);
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}
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static void op63(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_ORA (tmpv);
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}
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static void op73(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ssp->RAM[op & 0x1ff]; OP_EORA(tmpv);
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}
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// OP a, imm
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static void op14(unsigned int op, unsigned int imm)
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{
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OP_SUBA(imm);
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}
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static void op34(unsigned int op, unsigned int imm)
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{
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OP_CMPA(imm);
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}
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static void op44(unsigned int op, unsigned int imm)
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{
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OP_ADDA(imm);
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}
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static void op54(unsigned int op, unsigned int imm)
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{
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OP_ANDA(imm);
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}
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static void op64(unsigned int op, unsigned int imm)
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{
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OP_ORA (imm);
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}
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static void op74(unsigned int op, unsigned int imm)
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{
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OP_EORA(imm);
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}
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// OP a, ((ri))
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static void op15(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_SUBA(tmpv);
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}
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static void op35(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_CMPA(tmpv);
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}
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static void op45(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_ADDA(tmpv);
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}
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static void op55(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_ANDA(tmpv);
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}
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static void op65(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_ORA (tmpv);
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}
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static void op75(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = ptr2_read(op); OP_EORA(tmpv);
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}
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// OP a, ri
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static void op19(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_SUBA(tmpv);
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}
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static void op39(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_CMPA(tmpv);
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}
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static void op49(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_ADDA(tmpv);
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}
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static void op59(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_ANDA(tmpv);
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}
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static void op69(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_ORA (tmpv);
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}
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static void op79(unsigned int op, unsigned int imm)
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{
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unsigned int tmpv;
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tmpv = rIJ[IJind]; OP_EORA(tmpv);
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}
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// OP simm
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static void op1c(unsigned int op, unsigned int imm)
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{
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OP_SUBA(op & 0xff);
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}
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static void op3c(unsigned int op, unsigned int imm)
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{
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OP_CMPA(op & 0xff);
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}
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static void op4c(unsigned int op, unsigned int imm)
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{
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OP_ADDA(op & 0xff);
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}
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static void op5c(unsigned int op, unsigned int imm)
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{
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OP_ANDA(op & 0xff);
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}
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static void op6c(unsigned int op, unsigned int imm)
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{
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OP_ORA (op & 0xff);
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}
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static void op7c(unsigned int op, unsigned int imm)
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{
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OP_EORA(op & 0xff);
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}
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typedef void (in_func)(unsigned int op, unsigned int imm);
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static in_func *in_funcs[0x80] =
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{
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op00, op01, op02, op03, op04, op05, op06, op07,
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NULL, op09, op0a, NULL, op0c, op0c, op0c, op0c,
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op10, op11, NULL, op13, op14, op15, NULL, NULL,
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NULL, op19, NULL, op1b, op1c, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, op24, op25, op26, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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op30, op31, NULL, op33, op34, op35, NULL, NULL,
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NULL, op39, NULL, NULL, op3c, NULL, NULL, NULL,
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op40, op41, NULL, op43, op44, op45, NULL, NULL,
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op48, op49, NULL, op4b, op4c, NULL, NULL, NULL,
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op50, op51, NULL, op53, op54, op55, NULL, NULL,
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NULL, op59, NULL, op5b, op5c, NULL, NULL, NULL,
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op60, op61, NULL, op63, op64, op65, NULL, NULL,
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NULL, op69, NULL, NULL, op6c, NULL, NULL, NULL,
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op70, op71, NULL, op73, op74, op75, NULL, NULL,
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NULL, op79, NULL, NULL, op7c, NULL, NULL, NULL,
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};
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// -----------------------------------------------------
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static unsigned int crctable[256] =
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{
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0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
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@ -154,7 +611,7 @@ static int get_iram_context(void)
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int crc = chksum_crc32(svp->iram_rom, 0x800);
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val1 = iram_context_map[(val>>1)&0x3f];
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if (crc != checksums[val1]) {
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if (crc != checksums[val1] || val1 == 0) {
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printf("val: %02x PC=%04x\n", (val>>1)&0x3f, rPC);
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elprintf(EL_ANOMALY, "bad crc: %08x vs %08x", crc, checksums[val1]);
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//debug_dump2file(name, svp->iram_rom, 0x800);
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@ -168,29 +625,37 @@ static int get_iram_context(void)
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static u32 interp_get_pc(void)
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{
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#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)
|
||||
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) {
|
||||
printf("block not found!\n");
|
||||
exit(1);
|
||||
}
|
||||
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)
|
||||
{
|
||||
int tmp, op, op1, icount = 0;
|
||||
unsigned int op, op1, icount = 0;
|
||||
void *ret;
|
||||
|
||||
ret = tcache_ptr;
|
||||
|
|
@ -198,25 +663,31 @@ static void *translate_block(int pc)
|
|||
//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);
|
||||
|
|
@ -225,7 +696,7 @@ static void *translate_block(int pc)
|
|||
// stats
|
||||
nblocks++;
|
||||
//if (pc >= 0x400)
|
||||
printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*2);
|
||||
printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*4);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -241,6 +712,7 @@ int ssp1601_dyn_init(void)
|
|||
memset(block_table, 0, sizeof(block_table));
|
||||
memset(block_table_iram, 0, sizeof(block_table_iram));
|
||||
*tcache_ptr++ = 0xfe01;
|
||||
*tcache_ptr++ = 0xfe01;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -252,34 +724,56 @@ void ssp1601_dyn_reset(ssp1601_t *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)
|
||||
{
|
||||
int pc_old = rPC;
|
||||
unsigned int *iPC;
|
||||
//int pc_old = rPC;
|
||||
if (rPC < 0x800/2)
|
||||
{
|
||||
if (iram_dirty) {
|
||||
iram_context = get_iram_context();
|
||||
iram_dirty = 0;
|
||||
iram_dirty--;
|
||||
}
|
||||
if (block_table_iram[iram_context][rPC] == NULL)
|
||||
block_table_iram[iram_context][rPC] = translate_block(rPC);
|
||||
PC = block_table_iram[iram_context][rPC];
|
||||
iPC = block_table_iram[iram_context][rPC];
|
||||
}
|
||||
else
|
||||
{
|
||||
if (block_table[rPC] == NULL)
|
||||
block_table[rPC] = translate_block(rPC);
|
||||
PC = block_table[rPC];
|
||||
iPC = 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
|
||||
if (pc_old < 0x800/2)
|
||||
|
|
@ -287,6 +781,7 @@ void ssp1601_dyn_run(int cycles)
|
|||
else
|
||||
rPC += (PC - block_table[pc_old]) - 1;
|
||||
}
|
||||
*/
|
||||
//printf("end @ %04x, PC=%04x\n", (PC - tcache)<<1, rPC<<1);
|
||||
/*
|
||||
if (pc_old < 0x400) {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue