/* Nintendo/SGI Reality Signal Processor (RSP) emulator Written by Ville Linde */ #include "emu.h" #include "debugger.h" #include "rsp.h" CPU_DISASSEMBLE( rsp ); #ifndef USE_RSPDRC #define LOG_INSTRUCTION_EXECUTION 0 #define SAVE_DISASM 0 #define SAVE_DMEM 0 #define RSP_TEST_SYNC 0 #define PRINT_VECREG(x) mame_printf_debug("V%d: %04X|%04X|%04X|%04X|%04X|%04X|%04X|%04X\n", (x), \ (UINT16)R_VREG_S((x),0), (UINT16)R_VREG_S((x),1), \ (UINT16)R_VREG_S((x),2), (UINT16)R_VREG_S((x),3), \ (UINT16)R_VREG_S((x),4), (UINT16)R_VREG_S((x),5), \ (UINT16)R_VREG_S((x),6), (UINT16)R_VREG_S((x),7)) #define PRINT_ACCUM(x) mame_printf_debug("A%d: %08X|%08X\n", (x), \ (UINT32)( ( ACCUM(x) >> 32 ) & 0x00000000ffffffff ), \ (UINT32)( ACCUM(x) & 0x00000000ffffffff )) extern offs_t rsp_dasm_one(char *buffer, offs_t pc, UINT32 op); INLINE rsp_state *get_safe_token(running_device *device) { assert(device != NULL); assert(device->type() == RSP); return (rsp_state *)downcast(device)->token(); } #define SIMM16 ((INT32)(INT16)(op)) #define UIMM16 ((UINT16)(op)) #define UIMM26 (op & 0x03ffffff) #define JUMP_ABS(addr) { rsp->nextpc = 0x04001000 | (((addr) << 2) & 0xfff); } #define JUMP_ABS_L(addr,l) { rsp->nextpc = 0x04001000 | (((addr) << 2) & 0xfff); rsp->r[l] = rsp->pc + 4; } #define JUMP_REL(offset) { rsp->nextpc = 0x04001000 | ((rsp->pc + ((offset) << 2)) & 0xfff); } #define JUMP_REL_L(offset,l) { rsp->nextpc = 0x04001000 | ((rsp->pc + ((offset) << 2)) & 0xfff); rsp->r[l] = rsp->pc + 4; } #define JUMP_PC(addr) { rsp->nextpc = 0x04001000 | ((addr) & 0xfff); } #define JUMP_PC_L(addr,l) { rsp->nextpc = 0x04001000 | ((addr) & 0xfff); rsp->r[l] = rsp->pc + 4; } #define VDREG ((op >> 6) & 0x1f) #define VS1REG ((op >> 11) & 0x1f) #define VS2REG ((op >> 16) & 0x1f) #define EL ((op >> 21) & 0xf) #define S_VREG_B(offset) (((15 - (offset)) & 0x07) << 3) #define S_VREG_S(offset) (((7 - (offset)) & 0x03) << 4) #define S_VREG_L(offset) (((3 - (offset)) & 0x01) << 5) #define M_VREG_B(offset) ((UINT64)0x00FF << S_VREG_B(offset)) #define M_VREG_S(offset) ((UINT64)0x0000FFFFul << S_VREG_S(offset)) #define M_VREG_L(offset) ((UINT64)0x00000000FFFFFFFFull << S_VREG_L(offset)) #define R_VREG_B(reg, offset) ((rsp->v[(reg)].d[(15 - (offset)) >> 3] >> S_VREG_B(offset)) & 0x00FF) #define R_VREG_S(reg, offset) (INT16)((rsp->v[(reg)].d[(7 - (offset)) >> 2] >> S_VREG_S(offset)) & 0x0000FFFFul) #define R_VREG_L(reg, offset) ((rsp->v[(reg)].d[(3 - (offset)) >> 1] >> S_VREG_L(offset)) & 0x00000000FFFFFFFFull) #define W_VREG_B(reg, offset, val) (rsp->v[(reg)].d[(15 - (offset)) >> 3] = (rsp->v[(reg)].d[(15 - (offset)) >> 3] & ~M_VREG_B(offset)) | (M_VREG_B(offset) & ((UINT64)(val) << S_VREG_B(offset)))) #define W_VREG_S(reg, offset, val) (rsp->v[(reg)].d[(7 - (offset)) >> 2] = (rsp->v[(reg)].d[(7 - (offset)) >> 2] & ~M_VREG_S(offset)) | (M_VREG_S(offset) & ((UINT64)(val) << S_VREG_S(offset)))) #define W_VREG_L(reg, offset, val) (rsp->v[(reg)].d[(3 - (offset)) >> 1] = (rsp->v[(reg)].d[(3 - (offset)) >> 1] & ~M_VREG_L(offset)) | (M_VREG_L(offset) & ((UINT64)(val) << S_VREG_L(offset)))) #define VEC_EL_1(x,z) (vector_elements_1[(x)][(z)]) #define VEC_EL_2(x,z) (vector_elements_2[(x)][(z)]) #define ACCUM(x) (rsp->accum[(7-(x))].l) #define S_ACCUM_H (3 << 4) #define S_ACCUM_M (2 << 4) #define S_ACCUM_L (1 << 4) #define M_ACCUM_H (((INT64)0x0000FFFF) << S_ACCUM_H) #define M_ACCUM_M (((INT64)0x0000FFFF) << S_ACCUM_M) #define M_ACCUM_L (((INT64)0x0000FFFF) << S_ACCUM_L) #define R_ACCUM_H(x) ((INT16)((ACCUM(x) >> S_ACCUM_H) & 0x00FFFF)) #define R_ACCUM_M(x) ((INT16)((ACCUM(x) >> S_ACCUM_M) & 0x00FFFF)) #define R_ACCUM_L(x) ((INT16)((ACCUM(x) >> S_ACCUM_L) & 0x00FFFF)) #define W_ACCUM_H(x, y) (ACCUM(x) = (ACCUM(x) & ~M_ACCUM_H) | (M_ACCUM_H & ((INT64)(y) << S_ACCUM_H))) #define W_ACCUM_M(x, y) (ACCUM(x) = (ACCUM(x) & ~M_ACCUM_M) | (M_ACCUM_M & ((INT64)(y) << S_ACCUM_M))) #define W_ACCUM_L(x, y) (ACCUM(x) = (ACCUM(x) & ~M_ACCUM_L) | (M_ACCUM_L & ((INT64)(y) << S_ACCUM_L))) #define CARRY_FLAG(x) ((rsp->flag[0] & (1 << ((x)))) ? 1 : 0) #define CLEAR_CARRY_FLAGS() { rsp->flag[0] &= ~0xff; } #define SET_CARRY_FLAG(x) { rsp->flag[0] |= (1 << ((x))); } #define CLEAR_CARRY_FLAG(x) { rsp->flag[0] &= ~(1 << ((x))); } #define COMPARE_FLAG(x) ((rsp->flag[1] & (1 << ((x)))) ? 1 : 0) #define CLEAR_COMPARE_FLAGS() { rsp->flag[1] &= ~0xff; } #define SET_COMPARE_FLAG(x) { rsp->flag[1] |= (1 << ((x))); } #define CLEAR_COMPARE_FLAG(x) { rsp->flag[1] &= ~(1 << ((x))); } #define ZERO_FLAG(x) ((rsp->flag[0] & (1 << (8+(x)))) ? 1 : 0) #define CLEAR_ZERO_FLAGS() { rsp->flag[0] &= ~0xff00; } #define SET_ZERO_FLAG(x) { rsp->flag[0] |= (1 << (8+(x))); } #define CLEAR_ZERO_FLAG(x) { rsp->flag[0] &= ~(1 << (8+(x))); } #define ROPCODE(pc) memory_decrypted_read_dword(rsp->program, pc) INLINE UINT8 READ8(rsp_state *rsp, UINT32 address) { address = 0x04000000 | (address & 0xfff); return rsp->program->read_byte(address); } INLINE UINT16 READ16(rsp_state *rsp, UINT32 address) { address = 0x04000000 | (address & 0xfff); if (address & 1) { //osd_die("RSP: READ16: unaligned %08X at %08X\n", address, rsp->ppc); return ((rsp->program->read_byte(address+0) & 0xff) << 8) | (rsp->program->read_byte(address+1) & 0xff); } return rsp->program->read_word(address); } INLINE UINT32 READ32(rsp_state *rsp, UINT32 address) { address = 0x04000000 | (address & 0xfff); if (address & 3) { //osd_die("RSP: READ32: unaligned %08X at %08X\n", address, rsp->ppc); return ((rsp->program->read_byte(address + 0) & 0xff) << 24) | ((rsp->program->read_byte(address + 1) & 0xff) << 16) | ((rsp->program->read_byte(address + 2) & 0xff) << 8) | ((rsp->program->read_byte(address + 3) & 0xff) << 0); } return rsp->program->read_dword(address); } INLINE void WRITE8(rsp_state *rsp, UINT32 address, UINT8 data) { address = 0x04000000 | (address & 0xfff); rsp->program->write_byte(address, data); } INLINE void WRITE16(rsp_state *rsp, UINT32 address, UINT16 data) { address = 0x04000000 | (address & 0xfff); if (address & 1) { //fatalerror("RSP: WRITE16: unaligned %08X, %04X at %08X\n", address, data, rsp->ppc); rsp->program->write_byte(address + 0, (data >> 8) & 0xff); rsp->program->write_byte(address + 1, (data >> 0) & 0xff); return; } rsp->program->write_word(address, data); } INLINE void WRITE32(rsp_state *rsp, UINT32 address, UINT32 data) { address = 0x04000000 | (address & 0xfff); if (address & 3) { //osd_die("RSP: WRITE32: unaligned %08X, %08X at %08X\n", address, data, rsp->ppc); rsp->program->write_byte(address + 0, (data >> 24) & 0xff); rsp->program->write_byte(address + 1, (data >> 16) & 0xff); rsp->program->write_byte(address + 2, (data >> 8) & 0xff); rsp->program->write_byte(address + 3, (data >> 0) & 0xff); return; } rsp->program->write_dword(address, data); } /*****************************************************************************/ static UINT32 get_cop0_reg(rsp_state *rsp, int reg) { if (reg >= 0 && reg < 8) { return (rsp->config->sp_reg_r)(rsp->device, reg, 0x00000000); } else if (reg >= 8 && reg < 16) { return (rsp->config->dp_reg_r)(rsp->device, reg - 8, 0x00000000); } else { fatalerror("RSP: get_cop0_reg: %d", reg); } } static void set_cop0_reg(rsp_state *rsp, int reg, UINT32 data) { if (reg >= 0 && reg < 8) { (rsp->config->sp_reg_w)(rsp->device, reg, data, 0x00000000); } else if (reg >= 8 && reg < 16) { (rsp->config->dp_reg_w)(rsp->device, reg - 8, data, 0x00000000); } else { fatalerror("RSP: set_cop0_reg: %d, %08X\n", reg, data); } } static void unimplemented_opcode(rsp_state *rsp, UINT32 op) { if ((rsp->device->machine->debug_flags & DEBUG_FLAG_ENABLED) != 0) { char string[200]; rsp_dasm_one(string, rsp->ppc, op); mame_printf_debug("%08X: %s\n", rsp->ppc, string); } #if SAVE_DISASM { char string[200]; int i; FILE *dasm; dasm = fopen("rsp_disasm.txt", "wt"); for (i=0; i < 0x1000; i+=4) { UINT32 opcode = ROPCODE(0x04001000 + i); rsp_dasm_one(string, 0x04001000 + i, opcode); fprintf(dasm, "%08X: %08X %s\n", 0x04001000 + i, opcode, string); } fclose(dasm); } #endif #if SAVE_DMEM { int i; FILE *dmem; dmem = fopen("rsp_dmem.bin", "wb"); for (i=0; i < 0x1000; i++) { fputc(READ8(rsp, 0x04000000 + i), dmem); } fclose(dmem); } #endif fatalerror("RSP: unknown opcode %02X (%08X) at %08X\n", op >> 26, op, rsp->ppc); } /*****************************************************************************/ static const int vector_elements_1[16][8] = { { 0, 1, 2, 3, 4, 5, 6, 7 }, // none { 0, 1, 2, 3, 4, 5, 6 ,7 }, // ??? { 1, 3, 5, 7, 0, 2, 4, 6 }, // 0q { 0, 2, 4, 6, 1, 3, 5, 7 }, // 1q { 1, 2, 3, 5, 6, 7, 0, 4 }, // 0h { 0, 2, 3, 4, 6, 7, 1, 5 }, // 1h { 0, 1, 3, 4, 5, 7, 2, 6 }, // 2h { 0, 1, 2, 4, 5, 6, 3, 7 }, // 3h { 1, 2, 3, 4, 5, 6, 7, 0 }, // 0 { 0, 2, 3, 4, 5, 6, 7, 1 }, // 1 { 0, 1, 3, 4, 5, 6, 7, 2 }, // 2 { 0, 1, 2, 4, 5, 6, 7, 3 }, // 3 { 0, 1, 2, 3, 5, 6, 7, 4 }, // 4 { 0, 1, 2, 3, 4, 6, 7, 5 }, // 5 { 0, 1, 2, 3, 4, 5, 7, 6 }, // 6 { 0, 1, 2, 3, 4, 5, 6, 7 }, // 7 }; static const int vector_elements_2[16][8] = { { 0, 1, 2, 3, 4, 5, 6, 7 }, // none { 0, 1, 2, 3, 4, 5, 6, 7 }, // ??? { 0, 0, 2, 2, 4, 4, 6, 6 }, // 0q { 1, 1, 3, 3, 5, 5, 7, 7 }, // 1q { 0, 0, 0, 0, 4, 4, 4, 4 }, // 0h { 1, 1, 1, 1, 5, 5, 5, 5 }, // 1h { 2, 2, 2, 2, 6, 6, 6, 6 }, // 2h { 3, 3, 3, 3, 7, 7, 7, 7 }, // 3h { 0, 0, 0, 0, 0, 0, 0, 0 }, // 0 { 1, 1, 1, 1, 1, 1, 1, 1 }, // 1 { 2, 2, 2, 2, 2, 2, 2, 2 }, // 2 { 3, 3, 3, 3, 3, 3, 3, 3 }, // 3 { 4, 4, 4, 4, 4, 4, 4, 4 }, // 4 { 5, 5, 5, 5, 5, 5, 5, 5 }, // 5 { 6, 6, 6, 6, 6, 6, 6, 6 }, // 6 { 7, 7, 7, 7, 7, 7, 7, 7 }, // 7 }; static CPU_INIT( rsp ) { rsp_state *rsp = get_safe_token(device); int regIdx; int accumIdx; rsp->config = (const rsp_config *)device->baseconfig().static_config(); if (LOG_INSTRUCTION_EXECUTION) rsp->exec_output = fopen("rsp_execute.txt", "wt"); rsp->irq_callback = irqcallback; rsp->device = device; rsp->program = device->space(AS_PROGRAM); #if 1 // Inaccurate. RSP registers power on to a random state... for(regIdx = 0; regIdx < 32; regIdx++ ) { rsp->r[regIdx] = 0; rsp->v[regIdx].d[0] = 0; rsp->v[regIdx].d[1] = 0; } rsp->flag[0] = 0; rsp->flag[1] = 0; rsp->flag[2] = 0; rsp->flag[3] = 0; rsp->square_root_res = 0; rsp->square_root_high = 0; rsp->reciprocal_res = 0; rsp->reciprocal_high = 0; #endif // ...except for the accumulators. // We're not calling mame_rand() because initializing something with mame_rand() // makes me retch uncontrollably. for(accumIdx = 0; accumIdx < 8; accumIdx++ ) { rsp->accum[accumIdx].l = 0; } rsp->sr = RSP_STATUS_HALT; rsp->step_count = 0; } static CPU_EXIT( rsp ) { rsp_state *rsp = get_safe_token(device); #if SAVE_DISASM { char string[200]; int i; FILE *dasm; dasm = fopen("rsp_disasm.txt", "wt"); for (i=0; i < 0x1000; i+=4) { UINT32 opcode = ROPCODE(0x04001000 + i); rsp_dasm_one(string, 0x04001000 + i, opcode); fprintf(dasm, "%08X: %08X %s\n", 0x04001000 + i, opcode, string); } fclose(dasm); } #endif #if SAVE_DMEM { int i; FILE *dmem; #if 0 dmem = fopen("rsp_dmem.txt", "wt"); for (i=0; i < 0x1000; i+=4) { fprintf(dmem, "%08X: %08X\n", 0x04000000 + i, READ32(rsp, 0x04000000 + i)); } fclose(dmem); #endif dmem = fopen("rsp_dmem.bin", "wb"); for (i=0; i < 0x1000; i++) { fputc(READ8(rsp, 0x04000000 + i), dmem); } fclose(dmem); } #endif if (rsp->exec_output) fclose(rsp->exec_output); rsp->exec_output = NULL; } static CPU_RESET( rsp ) { rsp_state *rsp = get_safe_token(device); rsp->nextpc = ~0; } static void handle_lwc2(rsp_state *rsp, UINT32 op) { int i, end; UINT32 ea; int dest = (op >> 16) & 0x1f; int base = (op >> 21) & 0x1f; int index = (op >> 7) & 0xf; int offset = (op & 0x7f); if (offset & 0x40) offset |= 0xffffffc0; switch ((op >> 11) & 0x1f) { case 0x00: /* LBV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00000 | IIII | Offset | // -------------------------------------------------- // // Load 1 byte to vector byte index ea = (base) ? rsp->r[base] + offset : offset; W_VREG_B(dest, index, READ8(rsp, ea)); break; } case 0x01: /* LSV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00001 | IIII | Offset | // -------------------------------------------------- // // Loads 2 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 2) : (offset * 2); end = index + 2; for (i=index; i < end; i++) { W_VREG_B(dest, i, READ8(rsp, ea)); ea++; } break; } case 0x02: /* LLV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00010 | IIII | Offset | // -------------------------------------------------- // // Loads 4 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 4) : (offset * 4); end = index + 4; for (i=index; i < end; i++) { W_VREG_B(dest, i, READ8(rsp, ea)); ea++; } break; } case 0x03: /* LDV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00011 | IIII | Offset | // -------------------------------------------------- // // Loads 8 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); end = index + 8; for (i=index; i < end; i++) { W_VREG_B(dest, i, READ8(rsp, ea)); ea++; } break; } case 0x04: /* LQV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00100 | IIII | Offset | // -------------------------------------------------- // // Loads up to 16 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); end = index + (16 - (ea & 0xf)); if (end > 16) end = 16; for (i=index; i < end; i++) { W_VREG_B(dest, i, READ8(rsp, ea)); ea++; } break; } case 0x05: /* LRV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00101 | IIII | Offset | // -------------------------------------------------- // // Stores up to 16 bytes starting from right side until 16-byte boundary ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); index = 16 - ((ea & 0xf) - index); end = 16; ea &= ~0xf; for (i=index; i < end; i++) { W_VREG_B(dest, i, READ8(rsp, ea)); ea++; } break; } case 0x06: /* LPV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00110 | IIII | Offset | // -------------------------------------------------- // // Loads a byte as the upper 8 bits of each element ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); for (i=0; i < 8; i++) { W_VREG_S(dest, i, READ8(rsp, ea + (((16-index) + i) & 0xf)) << 8); } break; } case 0x07: /* LUV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 00111 | IIII | Offset | // -------------------------------------------------- // // Loads a byte as the bits 14-7 of each element ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); for (i=0; i < 8; i++) { W_VREG_S(dest, i, READ8(rsp, ea + (((16-index) + i) & 0xf)) << 7); } break; } case 0x08: /* LHV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 01000 | IIII | Offset | // -------------------------------------------------- // // Loads a byte as the bits 14-7 of each element, with 2-byte stride ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); for (i=0; i < 8; i++) { W_VREG_S(dest, i, READ8(rsp, ea + (((16-index) + (i<<1)) & 0xf)) << 7); } break; } case 0x09: /* LFV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 01001 | IIII | Offset | // -------------------------------------------------- // // Loads a byte as the bits 14-7 of upper or lower quad, with 4-byte stride fatalerror("RSP: LFV\n"); if (index & 0x7) fatalerror("RSP: LFV: index = %d at %08X\n", index, rsp->ppc); ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); // not sure what happens if 16-byte boundary is crossed... if ((ea & 0xf) > 0) fatalerror("RSP: LFV: 16-byte boundary crossing at %08X, recheck this!\n", rsp->ppc); end = (index >> 1) + 4; for (i=index >> 1; i < end; i++) { W_VREG_S(dest, i, READ8(rsp, ea) << 7); ea += 4; } break; } case 0x0a: /* LWV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 01010 | IIII | Offset | // -------------------------------------------------- // // Loads the full 128-bit vector starting from vector byte index and wrapping to index 0 // after byte index 15 ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); // not sure what happens if 16-byte boundary is crossed... if ((ea & 0xf) > 0) fatalerror("RSP: LWV: 16-byte boundary crossing at %08X, recheck this!\n", rsp->ppc); end = (16 - index) + 16; for (i=(16 - index); i < end; i++) { W_VREG_B(dest, i & 0xf, READ8(rsp, ea)); ea += 4; } break; } case 0x0b: /* LTV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 110010 | BBBBB | TTTTT | 01011 | IIII | Offset | // -------------------------------------------------- // // Loads one element to maximum of 8 vectors, while incrementing element index // FIXME: has a small problem with odd indices int element; int vs = dest; int ve = dest + 8; if (ve > 32) ve = 32; element = 7 - (index >> 1); if (index & 1) fatalerror("RSP: LTV: index = %d\n", index); ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); ea = ((ea + 8) & ~0xf) + (index & 1); for (i=vs; i < ve; i++) { element = ((8 - (index >> 1) + (i-vs)) << 1); W_VREG_B(i, (element & 0xf), READ8(rsp, ea)); W_VREG_B(i, ((element+1) & 0xf), READ8(rsp, ea+1)); ea += 2; } break; } default: { unimplemented_opcode(rsp, op); break; } } } static void handle_swc2(rsp_state *rsp, UINT32 op) { int i, end; int eaoffset; UINT32 ea; int dest = (op >> 16) & 0x1f; int base = (op >> 21) & 0x1f; int index = (op >> 7) & 0xf; int offset = (op & 0x7f); if (offset & 0x40) offset |= 0xffffffc0; switch ((op >> 11) & 0x1f) { case 0x00: /* SBV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00000 | IIII | Offset | // -------------------------------------------------- // // Stores 1 byte from vector byte index ea = (base) ? rsp->r[base] + offset : offset; WRITE8(rsp, ea, R_VREG_B(dest, index)); break; } case 0x01: /* SSV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00001 | IIII | Offset | // -------------------------------------------------- // // Stores 2 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 2) : (offset * 2); end = index + 2; for (i=index; i < end; i++) { WRITE8(rsp, ea, R_VREG_B(dest, i)); ea++; } break; } case 0x02: /* SLV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00010 | IIII | Offset | // -------------------------------------------------- // // Stores 4 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 4) : (offset * 4); end = index + 4; for (i=index; i < end; i++) { WRITE8(rsp, ea, R_VREG_B(dest, i)); ea++; } break; } case 0x03: /* SDV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00011 | IIII | Offset | // -------------------------------------------------- // // Stores 8 bytes starting from vector byte index ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); end = index + 8; for (i=index; i < end; i++) { WRITE8(rsp, ea, R_VREG_B(dest, i)); ea++; } break; } case 0x04: /* SQV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00100 | IIII | Offset | // -------------------------------------------------- // // Stores up to 16 bytes starting from vector byte index until 16-byte boundary ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); end = index + (16 - (ea & 0xf)); for (i=index; i < end; i++) { WRITE8(rsp, ea, R_VREG_B(dest, i & 0xf)); ea++; } break; } case 0x05: /* SRV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00101 | IIII | Offset | // -------------------------------------------------- // // Stores up to 16 bytes starting from right side until 16-byte boundary int o; ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); end = index + (ea & 0xf); o = (16 - (ea & 0xf)) & 0xf; ea &= ~0xf; for (i=index; i < end; i++) { WRITE8(rsp, ea, R_VREG_B(dest, ((i + o) & 0xf))); ea++; } break; } case 0x06: /* SPV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00110 | IIII | Offset | // -------------------------------------------------- // // Stores upper 8 bits of each element ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); end = index + 8; for (i=index; i < end; i++) { if ((i & 0xf) < 8) { WRITE8(rsp, ea, R_VREG_B(dest, ((i & 0xf) << 1))); } else { WRITE8(rsp, ea, R_VREG_S(dest, (i & 0x7)) >> 7); } ea++; } break; } case 0x07: /* SUV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 00111 | IIII | Offset | // -------------------------------------------------- // // Stores bits 14-7 of each element ea = (base) ? rsp->r[base] + (offset * 8) : (offset * 8); end = index + 8; for (i=index; i < end; i++) { if ((i & 0xf) < 8) { WRITE8(rsp, ea, R_VREG_S(dest, (i & 0x7)) >> 7); } else { WRITE8(rsp, ea, R_VREG_B(dest, ((i & 0x7) << 1))); } ea++; } break; } case 0x08: /* SHV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 01000 | IIII | Offset | // -------------------------------------------------- // // Stores bits 14-7 of each element, with 2-byte stride ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); for (i=0; i < 8; i++) { UINT8 d = ((R_VREG_B(dest, ((index + (i << 1) + 0) & 0xf))) << 1) | ((R_VREG_B(dest, ((index + (i << 1) + 1) & 0xf))) >> 7); WRITE8(rsp, ea, d); ea += 2; } break; } case 0x09: /* SFV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 01001 | IIII | Offset | // -------------------------------------------------- // // Stores bits 14-7 of upper or lower quad, with 4-byte stride // FIXME: only works for index 0 and index 8 if (index & 0x7) mame_printf_debug("RSP: SFV: index = %d at %08X\n", index, rsp->ppc); ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); eaoffset = ea & 0xf; ea &= ~0xf; end = (index >> 1) + 4; for (i=index >> 1; i < end; i++) { WRITE8(rsp, ea + (eaoffset & 0xf), R_VREG_S(dest, i) >> 7); eaoffset += 4; } break; } case 0x0a: /* SWV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 01010 | IIII | Offset | // -------------------------------------------------- // // Stores the full 128-bit vector starting from vector byte index and wrapping to index 0 // after byte index 15 ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); eaoffset = ea & 0xf; ea &= ~0xf; end = index + 16; for (i=index; i < end; i++) { WRITE8(rsp, ea + (eaoffset & 0xf), R_VREG_B(dest, i & 0xf)); eaoffset++; } break; } case 0x0b: /* STV */ { // 31 25 20 15 10 6 0 // -------------------------------------------------- // | 111010 | BBBBB | TTTTT | 01011 | IIII | Offset | // -------------------------------------------------- // // Stores one element from maximum of 8 vectors, while incrementing element index int element; int vs = dest; int ve = dest + 8; if (ve > 32) ve = 32; element = 8 - (index >> 1); if (index & 0x1) fatalerror("RSP: STV: index = %d at %08X\n", index, rsp->ppc); ea = (base) ? rsp->r[base] + (offset * 16) : (offset * 16); if (ea & 0x1) fatalerror("RSP: STV: ea = %08X at %08X\n", ea, rsp->ppc); eaoffset = (ea & 0xf) + (element * 2); ea &= ~0xf; for (i=vs; i < ve; i++) { WRITE16(rsp, ea + (eaoffset & 0xf), R_VREG_S(i, element & 0x7)); eaoffset += 2; element++; } break; } default: { unimplemented_opcode(rsp, op); break; } } } INLINE UINT16 SATURATE_ACCUM(rsp_state *rsp, int accum, int slice, UINT16 negative, UINT16 positive) { if ((INT16)R_ACCUM_H(accum) < 0) { if ((UINT16)(R_ACCUM_H(accum)) != 0xffff) { return negative; } else { if ((INT16)R_ACCUM_M(accum) >= 0) { return negative; } else { if (slice == 0) { return R_ACCUM_L(accum); } else if (slice == 1) { return R_ACCUM_M(accum); } } } } else { if ((UINT16)(R_ACCUM_H(accum)) != 0) { return positive; } else { if ((INT16)R_ACCUM_M(accum) < 0) { return positive; } else { if (slice == 0) { return R_ACCUM_L(accum); } else { return R_ACCUM_M(accum); } } } } return 0; } #define WRITEBACK_RESULT() \ do { \ W_VREG_S(VDREG, 0, vres[0]); \ W_VREG_S(VDREG, 1, vres[1]); \ W_VREG_S(VDREG, 2, vres[2]); \ W_VREG_S(VDREG, 3, vres[3]); \ W_VREG_S(VDREG, 4, vres[4]); \ W_VREG_S(VDREG, 5, vres[5]); \ W_VREG_S(VDREG, 6, vres[6]); \ W_VREG_S(VDREG, 7, vres[7]); \ } while(0) #if 0 static float float_round(float input) { INT32 integer = (INT32)input; float fraction = input - (float)integer; float output = 0.0f; if( fraction >= 0.5f ) { output = (float)( integer + 1 ); } else { output = (float)integer; } return output; } #endif static void handle_vector_ops(rsp_state *rsp, UINT32 op) { int i; INT16 vres[8]; // Opcode legend: // E = VS2 element type // S = VS1, Source vector 1 // T = VS2, Source vector 2 // D = Destination vector switch (op & 0x3f) { case 0x00: /* VMULF */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000000 | // ------------------------------------------------------ // // Multiplies signed integer by signed integer * 2 for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); if (s1 == -32768 && s2 == -32768) { // overflow W_ACCUM_H(del, 0); W_ACCUM_M(del, -32768); W_ACCUM_L(del, -32768); vres[del] = 0x7fff; } else { INT64 r = s1 * s2 * 2; r += 0x8000; // rounding ? W_ACCUM_H(del, (r < 0) ? 0xffff : 0); // sign-extend to 48-bit W_ACCUM_M(del, (INT16)(r >> 16)); W_ACCUM_L(del, (UINT16)(r)); vres[del] = R_ACCUM_M(del); } } WRITEBACK_RESULT(); break; } case 0x01: /* VMULU */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000001 | // ------------------------------------------------------ // for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT64 r = s1 * s2 * 2; r += 0x8000; // rounding ? W_ACCUM_H(del, (UINT16)(r >> 32)); W_ACCUM_M(del, (UINT16)(r >> 16)); W_ACCUM_L(del, (UINT16)(r)); if (r < 0) { vres[del] = 0; } else if (((INT16)(R_ACCUM_H(del)) ^ (INT16)(R_ACCUM_M(del))) < 0) { vres[del] = -1; } else { vres[del] = R_ACCUM_M(del); } } WRITEBACK_RESULT(); break; } case 0x04: /* VMUDL */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000100 | // ------------------------------------------------------ // // Multiplies unsigned fraction by unsigned fraction // Stores the higher 16 bits of the 32-bit result to accumulator // The low slice of accumulator is stored into destination element for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); UINT32 s1 = (UINT32)(UINT16)R_VREG_S(VS1REG, del); UINT32 s2 = (UINT32)(UINT16)R_VREG_S(VS2REG, sel); UINT32 r = s1 * s2; W_ACCUM_H(del, 0); W_ACCUM_M(del, 0); W_ACCUM_L(del, (UINT16)(r >> 16)); vres[del] = R_ACCUM_L(del); } WRITEBACK_RESULT(); break; } case 0x05: /* VMUDM */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000101 | // ------------------------------------------------------ // // Multiplies signed integer by unsigned fraction // The result is stored into accumulator // The middle slice of accumulator is stored into destination element for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (UINT16)R_VREG_S(VS2REG, sel); // not sign-extended INT32 r = s1 * s2; W_ACCUM_H(del, (r < 0) ? 0xffff : 0); // sign-extend to 48-bit W_ACCUM_M(del, (INT16)(r >> 16)); W_ACCUM_L(del, (UINT16)(r)); vres[del] = R_ACCUM_M(del); } WRITEBACK_RESULT(); break; } case 0x06: /* VMUDN */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000110 | // ------------------------------------------------------ // // Multiplies unsigned fraction by signed integer // The result is stored into accumulator // The low slice of accumulator is stored into destination element for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (UINT16)R_VREG_S(VS1REG, del); // not sign-extended INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r = s1 * s2; W_ACCUM_H(del, (r < 0) ? 0xffff : 0); // sign-extend to 48-bit W_ACCUM_M(del, (INT16)(r >> 16)); W_ACCUM_L(del, (UINT16)(r)); vres[del] = R_ACCUM_L(del); } WRITEBACK_RESULT(); break; } case 0x07: /* VMUDH */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 000111 | // ------------------------------------------------------ // // Multiplies signed integer by signed integer // The result is stored into highest 32 bits of accumulator, the low slice is zero // The highest 32 bits of accumulator is saturated into destination element for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r = s1 * s2; W_ACCUM_H(del, (INT16)(r >> 16)); W_ACCUM_M(del, (UINT16)(r)); W_ACCUM_L(del, 0); if (r < -32768) r = -32768; if (r > 32767) r = 32767; vres[del] = (INT16)(r); } WRITEBACK_RESULT(); break; } case 0x08: /* VMACF */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001000 | // ------------------------------------------------------ // // Multiplies signed integer by signed integer * 2 // The result is added to accumulator for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r = s1 * s2; ACCUM(del) += (INT64)(r) << 17; res = SATURATE_ACCUM(rsp, del, 1, 0x8000, 0x7fff); vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x09: /* VMACU */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001001 | // ------------------------------------------------------ // for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r1 = s1 * s2; UINT32 r2 = (UINT16)R_ACCUM_L(del) + ((UINT16)(r1) * 2); UINT32 r3 = (UINT16)R_ACCUM_M(del) + (UINT16)((r1 >> 16) * 2) + (UINT16)(r2 >> 16); W_ACCUM_L(del, (UINT16)(r2)); W_ACCUM_M(del, (UINT16)(r3)); W_ACCUM_H(del, (UINT16)R_ACCUM_H(del) + (UINT16)(r3 >> 16) + (UINT16)(r1 >> 31)); //res = SATURATE_ACCUM(rsp, del, 1, 0x0000, 0xffff); if ((INT16)R_ACCUM_H(del) < 0) { res = 0; } else { if (R_ACCUM_H(del) != 0) { res = 0xffff; } else { if ((INT16)R_ACCUM_M(del) < 0) { res = 0xffff; } else { res = R_ACCUM_M(del); } } } vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x0c: /* VMADL */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001100 | // ------------------------------------------------------ // // Multiplies unsigned fraction by unsigned fraction // Adds the higher 16 bits of the 32-bit result to accumulator // The low slice of accumulator is stored into destination element for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); UINT32 s1 = (UINT32)(UINT16)R_VREG_S(VS1REG, del); UINT32 s2 = (UINT32)(UINT16)R_VREG_S(VS2REG, sel); UINT32 r1 = s1 * s2; UINT32 r2 = (UINT16)R_ACCUM_L(del) + (r1 >> 16); UINT32 r3 = (UINT16)R_ACCUM_M(del) + (r2 >> 16); W_ACCUM_L(del, (UINT16)(r2)); W_ACCUM_M(del, (UINT16)(r3)); W_ACCUM_H(del, (INT16)R_ACCUM_H(del) + (INT16)(r3 >> 16)); res = SATURATE_ACCUM(rsp, del, 0, 0x0000, 0xffff); vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x0d: /* VMADM */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001101 | // ------------------------------------------------------ // // Multiplies signed integer by unsigned fraction // The result is added into accumulator // The middle slice of accumulator is stored into destination element for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); UINT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); UINT32 s2 = (UINT16)R_VREG_S(VS2REG, sel); // not sign-extended UINT32 r1 = s1 * s2; UINT32 r2 = (UINT16)R_ACCUM_L(del) + (UINT16)(r1); UINT32 r3 = (UINT16)R_ACCUM_M(del) + (r1 >> 16) + (r2 >> 16); W_ACCUM_L(del, (UINT16)(r2)); W_ACCUM_M(del, (UINT16)(r3)); W_ACCUM_H(del, (UINT16)R_ACCUM_H(del) + (UINT16)(r3 >> 16)); if ((INT32)(r1) < 0) W_ACCUM_H(del, (UINT16)R_ACCUM_H(del) - 1); res = SATURATE_ACCUM(rsp, del, 1, 0x8000, 0x7fff); vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x0e: /* VMADN */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001110 | // ------------------------------------------------------ // // Multiplies unsigned fraction by signed integer // The result is added into accumulator // The low slice of accumulator is stored into destination element for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (UINT16)R_VREG_S(VS1REG, del); // not sign-extended INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); UINT32 r1 = s1 * s2; UINT32 r2 = (UINT16)R_ACCUM_L(del) + (UINT16)(r1); UINT32 r3 = (UINT16)R_ACCUM_M(del) + (r1 >> 16) + (r2 >> 16); W_ACCUM_L(del, (UINT16)(r2)); W_ACCUM_M(del, (UINT16)(r3)); W_ACCUM_H(del, (UINT16)R_ACCUM_H(del) + (UINT16)(r3 >> 16)); if ((INT32)(r1) < 0) W_ACCUM_H(del, (UINT16)R_ACCUM_H(del) - 1); res = SATURATE_ACCUM(rsp, del, 0, 0x0000, 0xffff); vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x0f: /* VMADH */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 001111 | // ------------------------------------------------------ // // Multiplies signed integer by signed integer // The result is added into highest 32 bits of accumulator, the low slice is zero // The highest 32 bits of accumulator is saturated into destination element for (i=0; i < 8; i++) { UINT16 res; int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT64 r = s1 * s2; ACCUM(del) += (INT64)(r) << 32; res = SATURATE_ACCUM(rsp, del, 1, 0x8000, 0x7fff); vres[del] = res; } WRITEBACK_RESULT(); break; } case 0x10: /* VADD */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 010000 | // ------------------------------------------------------ // // Adds two vector registers and carry flag, the result is saturated to 32767 // TODO: check VS2REG == VDREG for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r = s1 + s2 + CARRY_FLAG(del); W_ACCUM_L(del, (INT16)(r)); if (r > 32767) r = 32767; if (r < -32768) r = -32768; vres[del] = (INT16)(r); } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x11: /* VSUB */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 010001 | // ------------------------------------------------------ // // Subtracts two vector registers and carry flag, the result is saturated to -32768 // TODO: check VS2REG == VDREG for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (INT32)(INT16)R_VREG_S(VS1REG, del); INT32 s2 = (INT32)(INT16)R_VREG_S(VS2REG, sel); INT32 r = s1 - s2 - CARRY_FLAG(del); W_ACCUM_L(del, (INT16)(r)); if (r > 32767) r = 32767; if (r < -32768) r = -32768; vres[del] = (INT16)(r); } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x13: /* VABS */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 010011 | // ------------------------------------------------------ // // Changes the sign of source register 2 if source register 1 is negative and stores // the result to destination register for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT16 s1 = (INT16)R_VREG_S(VS1REG, del); INT16 s2 = (INT16)R_VREG_S(VS2REG, sel); if (s1 < 0) { if (s2 == -32768) { vres[del] = 32767; } else { vres[del] = -s2; } } else if (s1 > 0) { vres[del] = s2; } else { vres[del] = 0; } W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x14: /* VADDC */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 010100 | // ------------------------------------------------------ // // Adds two vector registers, the carry out is stored into carry register // TODO: check VS2REG = VDREG CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (UINT32)(UINT16)R_VREG_S(VS1REG, del); INT32 s2 = (UINT32)(UINT16)R_VREG_S(VS2REG, sel); INT32 r = s1 + s2; vres[del] = (INT16)(r); W_ACCUM_L(del, (INT16)(r)); if (r & 0xffff0000) { SET_CARRY_FLAG(del); } } WRITEBACK_RESULT(); break; } case 0x15: /* VSUBC */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 010101 | // ------------------------------------------------------ // // Subtracts two vector registers, the carry out is stored into carry register // TODO: check VS2REG = VDREG CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT32 s1 = (UINT32)(UINT16)R_VREG_S(VS1REG, del); INT32 s2 = (UINT32)(UINT16)R_VREG_S(VS2REG, sel); INT32 r = s1 - s2; vres[del] = (INT16)(r); W_ACCUM_L(del, (UINT16)(r)); if ((UINT16)(r) != 0) { SET_ZERO_FLAG(del); } if (r & 0xffff0000) { SET_CARRY_FLAG(del); } } WRITEBACK_RESULT(); break; } case 0x1d: /* VSAW */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 011101 | // ------------------------------------------------------ // // Stores high, middle or low slice of accumulator to destination vector switch (EL) { case 0x08: // VSAWH { for (i=0; i < 8; i++) { W_VREG_S(VDREG, i, R_ACCUM_H(i)); } break; } case 0x09: // VSAWM { for (i=0; i < 8; i++) { W_VREG_S(VDREG, i, R_ACCUM_M(i)); } break; } case 0x0a: // VSAWL { for (i=0; i < 8; i++) { W_VREG_S(VDREG, i, R_ACCUM_L(i)); } break; } default: fatalerror("RSP: VSAW: el = %d\n", EL); } break; } case 0x20: /* VLT */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100000 | // ------------------------------------------------------ // // Sets compare flags if elements in VS1 are less than VS2 // Moves the element in VS2 to destination vector rsp->flag[1] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); if (R_VREG_S(VS1REG, del) < R_VREG_S(VS2REG, sel)) { vres[del] = R_VREG_S(VS1REG, del); SET_COMPARE_FLAG(del); } else if (R_VREG_S(VS1REG, del) == R_VREG_S(VS2REG, sel)) { vres[del] = R_VREG_S(VS1REG, del); if (ZERO_FLAG(del) != 0 && CARRY_FLAG(del) != 0) { SET_COMPARE_FLAG(del); } } else { vres[del] = R_VREG_S(VS2REG, sel); } W_ACCUM_L(del, vres[del]); } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x21: /* VEQ */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100001 | // ------------------------------------------------------ // // Sets compare flags if elements in VS1 are equal with VS2 // Moves the element in VS2 to destination vector rsp->flag[1] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = R_VREG_S(VS2REG, sel); W_ACCUM_L(del, vres[del]); if (R_VREG_S(VS1REG, del) == R_VREG_S(VS2REG, sel)) { if (ZERO_FLAG(del) == 0) { SET_COMPARE_FLAG(del); } } } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x22: /* VNE */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100010 | // ------------------------------------------------------ // // Sets compare flags if elements in VS1 are not equal with VS2 // Moves the element in VS2 to destination vector rsp->flag[1] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = R_VREG_S(VS1REG, del); W_ACCUM_L(del, vres[del]); if (R_VREG_S(VS1REG, del) != R_VREG_S(VS2REG, sel)) { SET_COMPARE_FLAG(del); } else { if (ZERO_FLAG(del) != 0) { SET_COMPARE_FLAG(del); } } } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x23: /* VGE */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100011 | // ------------------------------------------------------ // // Sets compare flags if elements in VS1 are greater or equal with VS2 // Moves the element in VS2 to destination vector rsp->flag[1] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); if (R_VREG_S(VS1REG, del) == R_VREG_S(VS2REG, sel)) { if (ZERO_FLAG(del) == 0 || CARRY_FLAG(del) == 0) { SET_COMPARE_FLAG(del); } } else if (R_VREG_S(VS1REG, del) > R_VREG_S(VS2REG, sel)) { SET_COMPARE_FLAG(del); } if (COMPARE_FLAG(del) != 0) { vres[del] = R_VREG_S(VS1REG, del); } else { vres[del] = R_VREG_S(VS2REG, sel); } W_ACCUM_L(del, vres[del]); } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); WRITEBACK_RESULT(); break; } case 0x24: /* VCL */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100100 | // ------------------------------------------------------ // // Vector clip low for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT16 s1 = R_VREG_S(VS1REG, del); INT16 s2 = R_VREG_S(VS2REG, sel); if (CARRY_FLAG(del) != 0) { if (ZERO_FLAG(del) != 0) { if (COMPARE_FLAG(del) != 0) { W_ACCUM_L(del, -(UINT16)s2); } else { W_ACCUM_L(del, s1); } } else { if (rsp->flag[2] & (1 << (del))) { if (((UINT32)(UINT16)(s1) + (UINT32)(UINT16)(s2)) > 0x10000) { W_ACCUM_L(del, s1); CLEAR_COMPARE_FLAG(del); } else { W_ACCUM_L(del, -((UINT16)s2)); SET_COMPARE_FLAG(del); } } else { if (((UINT32)(INT16)(s1) + (UINT32)(INT16)(s2)) != 0) { W_ACCUM_L(del, s1); CLEAR_COMPARE_FLAG(del); } else { W_ACCUM_L(del, -((UINT16)s2)); SET_COMPARE_FLAG(del); } } } } else { if (ZERO_FLAG(del) != 0) { if (rsp->flag[1] & (1 << (8+del))) { W_ACCUM_L(del, s2); } else { W_ACCUM_L(del, s1); } } else { if (((INT32)(UINT16)s1 - (INT32)(UINT16)s2) >= 0) { W_ACCUM_L(del, s2); rsp->flag[1] |= (1 << (8+del)); } else { W_ACCUM_L(del, s1); rsp->flag[1] &= ~(1 << (8+del)); } } } vres[del] = R_ACCUM_L(del); } CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); rsp->flag[2] = 0; WRITEBACK_RESULT(); break; } case 0x25: /* VCH */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100101 | // ------------------------------------------------------ // // Vector clip high CLEAR_ZERO_FLAGS(); CLEAR_CARRY_FLAGS(); rsp->flag[1] = 0; rsp->flag[2] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT16 s1 = R_VREG_S(VS1REG, del); INT16 s2 = R_VREG_S(VS2REG, sel); if ((s1 ^ s2) < 0) { SET_CARRY_FLAG(del); if (s2 < 0) { rsp->flag[1] |= (1 << (8+del)); } if (s1 + s2 <= 0) { if (s1 + s2 == -1) { rsp->flag[2] |= (1 << (del)); } SET_COMPARE_FLAG(del); vres[del] = -((UINT16)s2); } else { vres[del] = s1; } if (s1 + s2 != 0) { if (s1 != ~s2) { SET_ZERO_FLAG(del); } } } else { if (s2 < 0) { SET_COMPARE_FLAG(del); } if (s1 - s2 >= 0) { rsp->flag[1] |= (1 << (8+del)); vres[del] = s2; } else { vres[del] = s1; } if ((s1 - s2) != 0) { if (s1 != ~s2) { SET_ZERO_FLAG(del); } } } W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x26: /* VCR */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100110 | // ------------------------------------------------------ // // Vector clip reverse rsp->flag[0] = 0; rsp->flag[1] = 0; rsp->flag[2] = 0; for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); INT16 s1 = R_VREG_S(VS1REG, del); INT16 s2 = R_VREG_S(VS2REG, sel); if ((INT16)(s1 ^ s2) < 0) { if (s2 < 0) { rsp->flag[1] |= (1 << (8+del)); } if ((s1 + s2) <= 0) { W_ACCUM_L(del, ~((UINT16)s2)); SET_COMPARE_FLAG(del); } else { W_ACCUM_L(del, s1); } } else { if (s2 < 0) { SET_COMPARE_FLAG(del); } if ((s1 - s2) >= 0) { W_ACCUM_L(del, s2); rsp->flag[1] |= (1 << (8+del)); } else { W_ACCUM_L(del, s1); } } vres[del] = R_ACCUM_L(del); } WRITEBACK_RESULT(); break; } case 0x27: /* VMRG */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 100111 | // ------------------------------------------------------ // // Merges two vectors according to compare flags for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); if (COMPARE_FLAG(del) != 0) { vres[del] = R_VREG_S(VS1REG, del); } else { vres[del] = R_VREG_S(VS2REG, VEC_EL_2(EL, sel)); } W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x28: /* VAND */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101000 | // ------------------------------------------------------ // // Bitwise AND of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = R_VREG_S(VS1REG, del) & R_VREG_S(VS2REG, sel); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x29: /* VNAND */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101001 | // ------------------------------------------------------ // // Bitwise NOT AND of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = ~((R_VREG_S(VS1REG, del) & R_VREG_S(VS2REG, sel))); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x2a: /* VOR */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101010 | // ------------------------------------------------------ // // Bitwise OR of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = R_VREG_S(VS1REG, del) | R_VREG_S(VS2REG, sel); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x2b: /* VNOR */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101011 | // ------------------------------------------------------ // // Bitwise NOT OR of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = ~((R_VREG_S(VS1REG, del) | R_VREG_S(VS2REG, sel))); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x2c: /* VXOR */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101100 | // ------------------------------------------------------ // // Bitwise XOR of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = R_VREG_S(VS1REG, del) ^ R_VREG_S(VS2REG, sel); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x2d: /* VNXOR */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | TTTTT | DDDDD | 101101 | // ------------------------------------------------------ // // Bitwise NOT XOR of two vector registers for (i=0; i < 8; i++) { int del = VEC_EL_1(EL, i); int sel = VEC_EL_2(EL, del); vres[del] = ~((R_VREG_S(VS1REG, del) ^ R_VREG_S(VS2REG, sel))); W_ACCUM_L(del, vres[del]); } WRITEBACK_RESULT(); break; } case 0x30: /* VRCP */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110000 | // ------------------------------------------------------ // // Calculates reciprocal int del = (VS1REG & 7); int sel = EL & 7; INT32 rec; rec = (INT16)(R_VREG_S(VS2REG, sel)); if (rec == 0) { // divide by zero -> overflow rec = 0x7fffffff; } else { int sign = 0; int exp = 0; int mantissa = 0; if (rec < 0) { rec = -rec; // rec = MINUS rec sign = 1; } // restrict to 10-bit mantissa for (i = 15; i >= 0; i--) { if (rec & (1 << i)) { exp = i; mantissa = (rec << (15 - i)) >> 6; break; } } if (mantissa == 0x200) { rec = 0x7fffffff; } else { rec = 0xffffffffU / mantissa; // // simulate rounding error // // This has been verified on the real hardware. // // I was able to replicate this exact behaviour by using a five-round // Newton reciprocal method using floorf() on intermediate results // to force the use of IEEE 754 32bit floats. // However, for the sake of portability, we'll use integer arithmetic. // if (rec & 0x800) rec += 1; rec <<= 8; } // restrict result to 17 significant bits rec &= 0x7fffc000; rec >>= exp; if (sign) { rec = ~rec; // rec = BITWISE NOT rec } } for (i=0; i < 8; i++) { int element = VEC_EL_2(EL, i); W_ACCUM_L(i, R_VREG_S(VS2REG, element)); } rsp->reciprocal_res = rec; W_VREG_S(VDREG, del, (UINT16)(rsp->reciprocal_res)); // store low part break; } case 0x31: /* VRCPL */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110001 | // ------------------------------------------------------ // // Calculates reciprocal low part int del = (VS1REG & 7); int sel = VEC_EL_2(EL, del); INT32 rec; rec = ((UINT16)(R_VREG_S(VS2REG, sel)) | ((UINT32)(rsp->reciprocal_high) << 16)); if (rec == 0) { // divide by zero -> overflow rec = 0x7fffffff; } else { int negative = 0; if (rec < 0) { if (((UINT32)(rec & 0xffff0000) == 0xffff0000) && ((INT16)(rec & 0xffff) < 0)) { rec = ~rec+1; } else { rec = ~rec; } negative = 1; } for (i = 31; i > 0; i--) { if (rec & (1 << i)) { rec &= ((0xffc00000) >> (31 - i)); i = 0; } } rec = (0x7fffffff / rec); for (i = 31; i > 0; i--) { if (rec & (1 << i)) { rec &= ((0xffff8000) >> (31 - i)); i = 0; } } if (negative) { rec = ~rec; } } for (i=0; i < 8; i++) { int element = VEC_EL_2(EL, i); W_ACCUM_L(i, R_VREG_S(VS2REG, element)); } rsp->reciprocal_res = rec; W_VREG_S(VDREG, del, (UINT16)(rsp->reciprocal_res)); // store low part break; } case 0x32: /* VRCPH */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110010 | // ------------------------------------------------------ // // Calculates reciprocal high part int del = (VS1REG & 7); int sel = VEC_EL_2(EL, del); rsp->reciprocal_high = R_VREG_S(VS2REG, sel); for (i=0; i < 8; i++) { int element = VEC_EL_2(EL, i); W_ACCUM_L(i, R_VREG_S(VS2REG, element)); // perhaps accumulator is used to store the intermediate values ? } W_VREG_S(VDREG, del, (INT16)(rsp->reciprocal_res >> 16)); // store high part break; } case 0x33: /* VMOV */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110011 | // ------------------------------------------------------ // // Moves element from vector to destination vector int element = VS1REG & 7; W_VREG_S(VDREG, element, R_VREG_S(VS2REG, VEC_EL_2(EL, 7-element))); break; } case 0x35: /* VRSQL */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110101 | // ------------------------------------------------------ // // Calculates reciprocal square-root low part int del = (VS1REG & 7); int sel = VEC_EL_2(EL, del); INT32 sqr; sqr = (UINT16)(R_VREG_S(VS2REG, sel)) | ((UINT32)(rsp->square_root_high) << 16); if (sqr == 0) { // square root on 0 -> overflow sqr = 0x7fffffff; } else if (sqr == 0xffff8000) { // overflow ? sqr = 0xffff8000; } else { int negative = 0; if (sqr < 0) { if (((UINT32)(sqr & 0xffff0000) == 0xffff0000) && ((INT16)(sqr & 0xffff) < 0)) { sqr = ~sqr+1; } else { sqr = ~sqr; } negative = 1; } for (i = 31; i > 0; i--) { if (sqr & (1 << i)) { sqr &= (0xff800000 >> (31 - i)); i = 0; } } sqr = (INT32)(0x7fffffff / sqrt((double)sqr)); for (i = 31; i > 0; i--) { if (sqr & (1 << i)) { sqr &= (0xffff8000 >> (31 - i)); i = 0; } } if (negative) { sqr = ~sqr; } } for (i=0; i < 8; i++) { int element = VEC_EL_2(EL, i); W_ACCUM_L(i, R_VREG_S(VS2REG, element)); } rsp->square_root_res = sqr; W_VREG_S(VDREG, del, (UINT16)(rsp->square_root_res)); // store low part break; } case 0x36: /* VRSQH */ { // 31 25 24 20 15 10 5 0 // ------------------------------------------------------ // | 010010 | 1 | EEEE | SSSSS | ?FFFF | DDDDD | 110110 | // ------------------------------------------------------ // // Calculates reciprocal square-root high part int del = (VS1REG & 7); int sel = VEC_EL_2(EL, del); rsp->square_root_high = R_VREG_S(VS2REG, sel); for (i=0; i < 8; i++) { int element = VEC_EL_2(EL, i); W_ACCUM_L(i, R_VREG_S(VS2REG, element)); // perhaps accumulator is used to store the intermediate values ? } W_VREG_S(VDREG, del, (INT16)(rsp->square_root_res >> 16)); // store high part break; } default: unimplemented_opcode(rsp, op); break; } } static CPU_EXECUTE( rsp ) { rsp_state *rsp = get_safe_token(device); UINT32 op; rsp->pc = 0x4001000 | (rsp->pc & 0xfff); if( rsp->sr & ( RSP_STATUS_HALT | RSP_STATUS_BROKE ) ) { rsp->icount = MIN(rsp->icount, 0); } while (rsp->icount > 0) { rsp->ppc = rsp->pc; debugger_instruction_hook(device, rsp->pc); op = ROPCODE(rsp->pc); if (rsp->nextpc != ~0) { rsp->pc = rsp->nextpc; rsp->nextpc = ~0; } else { rsp->pc += 4; } switch (op >> 26) { case 0x00: /* SPECIAL */ { switch (op & 0x3f) { case 0x00: /* SLL */ if (RDREG) RDVAL = (UINT32)RTVAL << SHIFT; break; case 0x02: /* SRL */ if (RDREG) RDVAL = (UINT32)RTVAL >> SHIFT; break; case 0x03: /* SRA */ if (RDREG) RDVAL = (INT32)RTVAL >> SHIFT; break; case 0x04: /* SLLV */ if (RDREG) RDVAL = (UINT32)RTVAL << (RSVAL & 0x1f); break; case 0x06: /* SRLV */ if (RDREG) RDVAL = (UINT32)RTVAL >> (RSVAL & 0x1f); break; case 0x07: /* SRAV */ if (RDREG) RDVAL = (INT32)RTVAL >> (RSVAL & 0x1f); break; case 0x08: /* JR */ JUMP_PC(RSVAL); break; case 0x09: /* JALR */ JUMP_PC_L(RSVAL, RDREG); break; case 0x0d: /* BREAK */ { (rsp->config->sp_set_status)(rsp->device, 0x3); rsp->icount = MIN(rsp->icount, 1); if (LOG_INSTRUCTION_EXECUTION) fprintf(rsp->exec_output, "\n---------- break ----------\n\n"); break; } case 0x20: /* ADD */ if (RDREG) RDVAL = (INT32)(RSVAL + RTVAL); break; case 0x21: /* ADDU */ if (RDREG) RDVAL = (INT32)(RSVAL + RTVAL); break; case 0x22: /* SUB */ if (RDREG) RDVAL = (INT32)(RSVAL - RTVAL); break; case 0x23: /* SUBU */ if (RDREG) RDVAL = (INT32)(RSVAL - RTVAL); break; case 0x24: /* AND */ if (RDREG) RDVAL = RSVAL & RTVAL; break; case 0x25: /* OR */ if (RDREG) RDVAL = RSVAL | RTVAL; break; case 0x26: /* XOR */ if (RDREG) RDVAL = RSVAL ^ RTVAL; break; case 0x27: /* NOR */ if (RDREG) RDVAL = ~(RSVAL | RTVAL); break; case 0x2a: /* SLT */ if (RDREG) RDVAL = (INT32)RSVAL < (INT32)RTVAL; break; case 0x2b: /* SLTU */ if (RDREG) RDVAL = (UINT32)RSVAL < (UINT32)RTVAL; break; default: unimplemented_opcode(rsp, op); break; } break; } case 0x01: /* REGIMM */ { switch (RTREG) { case 0x00: /* BLTZ */ if ((INT32)(RSVAL) < 0) JUMP_REL(SIMM16); break; case 0x01: /* BGEZ */ if ((INT32)(RSVAL) >= 0) JUMP_REL(SIMM16); break; case 0x10: /* BLTZAL */ if ((INT32)(RSVAL) < 0) JUMP_REL_L(SIMM16, 31); break; case 0x11: /* BGEZAL */ if ((INT32)(RSVAL) >= 0) JUMP_REL_L(SIMM16, 31); break; default: unimplemented_opcode(rsp, op); break; } break; } case 0x02: /* J */ JUMP_ABS(UIMM26); break; case 0x03: /* JAL */ JUMP_ABS_L(UIMM26, 31); break; case 0x04: /* BEQ */ if (RSVAL == RTVAL) JUMP_REL(SIMM16); break; case 0x05: /* BNE */ if (RSVAL != RTVAL) JUMP_REL(SIMM16); break; case 0x06: /* BLEZ */ if ((INT32)RSVAL <= 0) JUMP_REL(SIMM16); break; case 0x07: /* BGTZ */ if ((INT32)RSVAL > 0) JUMP_REL(SIMM16); break; case 0x08: /* ADDI */ if (RTREG) RTVAL = (INT32)(RSVAL + SIMM16); break; case 0x09: /* ADDIU */ if (RTREG) RTVAL = (INT32)(RSVAL + SIMM16); break; case 0x0a: /* SLTI */ if (RTREG) RTVAL = (INT32)(RSVAL) < ((INT32)SIMM16); break; case 0x0b: /* SLTIU */ if (RTREG) RTVAL = (UINT32)(RSVAL) < (UINT32)((INT32)SIMM16); break; case 0x0c: /* ANDI */ if (RTREG) RTVAL = RSVAL & UIMM16; break; case 0x0d: /* ORI */ if (RTREG) RTVAL = RSVAL | UIMM16; break; case 0x0e: /* XORI */ if (RTREG) RTVAL = RSVAL ^ UIMM16; break; case 0x0f: /* LUI */ if (RTREG) RTVAL = UIMM16 << 16; break; case 0x10: /* COP0 */ { switch ((op >> 21) & 0x1f) { case 0x00: /* MFC0 */ if (RTREG) RTVAL = get_cop0_reg(rsp, RDREG); break; case 0x04: /* MTC0 */ set_cop0_reg(rsp, RDREG, RTVAL); break; default: unimplemented_opcode(rsp, op); break; } break; } case 0x12: /* COP2 */ { switch ((op >> 21) & 0x1f) { case 0x00: /* MFC2 */ { // 31 25 20 15 10 6 0 // --------------------------------------------------- // | 010010 | 00000 | TTTTT | DDDDD | IIII | 0000000 | // --------------------------------------------------- // int el = (op >> 7) & 0xf; UINT16 b1 = R_VREG_B(VS1REG, (el+0) & 0xf); UINT16 b2 = R_VREG_B(VS1REG, (el+1) & 0xf); if (RTREG) RTVAL = (INT32)(INT16)((b1 << 8) | (b2)); break; } case 0x02: /* CFC2 */ { // 31 25 20 15 10 0 // ------------------------------------------------ // | 010010 | 00010 | TTTTT | DDDDD | 00000000000 | // ------------------------------------------------ // if (RTREG) { if (RDREG == 2) { // Anciliary clipping flags RTVAL = rsp->flag[RDREG] & 0x00ff; } else { // All other flags are 16 bits but sign-extended at retrieval RTVAL = (UINT32)rsp->flag[RDREG] | ( ( rsp->flag[RDREG] & 0x8000 ) ? 0xffff0000 : 0 ); } } break; } case 0x04: /* MTC2 */ { // 31 25 20 15 10 6 0 // --------------------------------------------------- // | 010010 | 00100 | TTTTT | DDDDD | IIII | 0000000 | // --------------------------------------------------- // int el = (op >> 7) & 0xf; W_VREG_B(VS1REG, (el+0) & 0xf, (RTVAL >> 8) & 0xff); W_VREG_B(VS1REG, (el+1) & 0xf, (RTVAL >> 0) & 0xff); break; } case 0x06: /* CTC2 */ { // 31 25 20 15 10 0 // ------------------------------------------------ // | 010010 | 00110 | TTTTT | DDDDD | 00000000000 | // ------------------------------------------------ // rsp->flag[RDREG] = RTVAL & 0xffff; break; } case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: { handle_vector_ops(rsp, op); break; } default: unimplemented_opcode(rsp, op); break; } break; } case 0x20: /* LB */ if (RTREG) RTVAL = (INT32)(INT8)READ8(rsp, RSVAL + SIMM16); break; case 0x21: /* LH */ if (RTREG) RTVAL = (INT32)(INT16)READ16(rsp, RSVAL + SIMM16); break; case 0x23: /* LW */ if (RTREG) RTVAL = READ32(rsp, RSVAL + SIMM16); break; case 0x24: /* LBU */ if (RTREG) RTVAL = (UINT8)READ8(rsp, RSVAL + SIMM16); break; case 0x25: /* LHU */ if (RTREG) RTVAL = (UINT16)READ16(rsp, RSVAL + SIMM16); break; case 0x28: /* SB */ WRITE8(rsp, RSVAL + SIMM16, RTVAL); break; case 0x29: /* SH */ WRITE16(rsp, RSVAL + SIMM16, RTVAL); break; case 0x2b: /* SW */ WRITE32(rsp, RSVAL + SIMM16, RTVAL); break; case 0x32: /* LWC2 */ handle_lwc2(rsp, op); break; case 0x3a: /* SWC2 */ handle_swc2(rsp, op); break; default: { unimplemented_opcode(rsp, op); break; } } if (LOG_INSTRUCTION_EXECUTION) { int i, l; static UINT32 prev_regs[32]; static VECTOR_REG prev_vecs[32]; char string[200]; rsp_dasm_one(string, rsp->ppc, op); fprintf(rsp->exec_output, "%08X: %s", rsp->ppc, string); l = strlen(string); if (l < 36) { for (i=l; i < 36; i++) { fprintf(rsp->exec_output, " "); } } fprintf(rsp->exec_output, "| "); for (i=0; i < 32; i++) { if (rsp->r[i] != prev_regs[i]) { fprintf(rsp->exec_output, "R%d: %08X ", i, rsp->r[i]); } prev_regs[i] = rsp->r[i]; } for (i=0; i < 32; i++) { if (rsp->v[i].d[0] != prev_vecs[i].d[0] || rsp->v[i].d[1] != prev_vecs[i].d[1]) { fprintf(rsp->exec_output, "V%d: %04X|%04X|%04X|%04X|%04X|%04X|%04X|%04X ", i, (UINT16)R_VREG_S(i,0), (UINT16)R_VREG_S(i,1), (UINT16)R_VREG_S(i,2), (UINT16)R_VREG_S(i,3), (UINT16)R_VREG_S(i,4), (UINT16)R_VREG_S(i,5), (UINT16)R_VREG_S(i,6), (UINT16)R_VREG_S(i,7)); } prev_vecs[i].d[0] = rsp->v[i].d[0]; prev_vecs[i].d[1] = rsp->v[i].d[1]; } fprintf(rsp->exec_output, "\n"); } --rsp->icount; if( rsp->sr & RSP_STATUS_SSTEP ) { if( rsp->step_count ) { rsp->step_count--; } else { rsp->sr |= RSP_STATUS_BROKE; } } if( rsp->sr & ( RSP_STATUS_HALT | RSP_STATUS_BROKE ) ) { rsp->icount = MIN(rsp->icount, 0); } } } /*****************************************************************************/ static CPU_SET_INFO( rsp ) { rsp_state *rsp = get_safe_token(device); switch (state) { /* --- the following bits of info are set as 64-bit signed integers --- */ case CPUINFO_INT_PC: case CPUINFO_INT_REGISTER + RSP_PC: rsp->pc = info->i; break; case CPUINFO_INT_REGISTER + RSP_R0: rsp->r[0] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R1: rsp->r[1] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R2: rsp->r[2] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R3: rsp->r[3] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R4: rsp->r[4] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R5: rsp->r[5] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R6: rsp->r[6] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R7: rsp->r[7] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R8: rsp->r[8] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R9: rsp->r[9] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R10: rsp->r[10] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R11: rsp->r[11] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R12: rsp->r[12] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R13: rsp->r[13] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R14: rsp->r[14] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R15: rsp->r[15] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R16: rsp->r[16] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R17: rsp->r[17] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R18: rsp->r[18] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R19: rsp->r[19] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R20: rsp->r[20] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R21: rsp->r[21] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R22: rsp->r[22] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R23: rsp->r[23] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R24: rsp->r[24] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R25: rsp->r[25] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R26: rsp->r[26] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R27: rsp->r[27] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R28: rsp->r[28] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R29: rsp->r[29] = info->i; break; case CPUINFO_INT_REGISTER + RSP_R30: rsp->r[30] = info->i; break; case CPUINFO_INT_SP: case CPUINFO_INT_REGISTER + RSP_R31: rsp->r[31] = info->i; break; case CPUINFO_INT_REGISTER + RSP_SR: rsp->sr = info->i; break; case CPUINFO_INT_REGISTER + RSP_NEXTPC: rsp->nextpc = info->i; break; case CPUINFO_INT_REGISTER + RSP_STEPCNT: rsp->step_count = info->i; break; } } CPU_GET_INFO( rsp ) { rsp_state *rsp = (device != NULL && device->token() != NULL) ? get_safe_token(device) : NULL; switch(state) { /* --- the following bits of info are returned as 64-bit signed integers --- */ case CPUINFO_INT_CONTEXT_SIZE: info->i = sizeof(rsp_state); break; case CPUINFO_INT_INPUT_LINES: info->i = 1; break; case CPUINFO_INT_DEFAULT_IRQ_VECTOR: info->i = 0; break; case DEVINFO_INT_ENDIANNESS: info->i = ENDIANNESS_LITTLE; break; case CPUINFO_INT_CLOCK_MULTIPLIER: info->i = 1; break; case CPUINFO_INT_CLOCK_DIVIDER: info->i = 1; break; case CPUINFO_INT_MIN_INSTRUCTION_BYTES: info->i = 4; break; case CPUINFO_INT_MAX_INSTRUCTION_BYTES: info->i = 4; break; case CPUINFO_INT_MIN_CYCLES: info->i = 1; break; case CPUINFO_INT_MAX_CYCLES: info->i = 1; break; case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 32; break; case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 32; break; case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_PROGRAM: info->i = 0; break; case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 0; break; case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 0; break; case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_DATA: info->i = 0; break; case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_IO: info->i = 0; break; case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_IO: info->i = 0; break; case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_IO: info->i = 0; break; case CPUINFO_INT_INPUT_STATE: info->i = CLEAR_LINE; break; case CPUINFO_INT_PREVIOUSPC: info->i = rsp->ppc; break; case CPUINFO_INT_PC: /* intentional fallthrough */ case CPUINFO_INT_REGISTER + RSP_PC: info->i = rsp->pc; break; case CPUINFO_INT_REGISTER + RSP_R0: info->i = rsp->r[0]; break; case CPUINFO_INT_REGISTER + RSP_R1: info->i = rsp->r[1]; break; case CPUINFO_INT_REGISTER + RSP_R2: info->i = rsp->r[2]; break; case CPUINFO_INT_REGISTER + RSP_R3: info->i = rsp->r[3]; break; case CPUINFO_INT_REGISTER + RSP_R4: info->i = rsp->r[4]; break; case CPUINFO_INT_REGISTER + RSP_R5: info->i = rsp->r[5]; break; case CPUINFO_INT_REGISTER + RSP_R6: info->i = rsp->r[6]; break; case CPUINFO_INT_REGISTER + RSP_R7: info->i = rsp->r[7]; break; case CPUINFO_INT_REGISTER + RSP_R8: info->i = rsp->r[8]; break; case CPUINFO_INT_REGISTER + RSP_R9: info->i = rsp->r[9]; break; case CPUINFO_INT_REGISTER + RSP_R10: info->i = rsp->r[10]; break; case CPUINFO_INT_REGISTER + RSP_R11: info->i = rsp->r[11]; break; case CPUINFO_INT_REGISTER + RSP_R12: info->i = rsp->r[12]; break; case CPUINFO_INT_REGISTER + RSP_R13: info->i = rsp->r[13]; break; case CPUINFO_INT_REGISTER + RSP_R14: info->i = rsp->r[14]; break; case CPUINFO_INT_REGISTER + RSP_R15: info->i = rsp->r[15]; break; case CPUINFO_INT_REGISTER + RSP_R16: info->i = rsp->r[16]; break; case CPUINFO_INT_REGISTER + RSP_R17: info->i = rsp->r[17]; break; case CPUINFO_INT_REGISTER + RSP_R18: info->i = rsp->r[18]; break; case CPUINFO_INT_REGISTER + RSP_R19: info->i = rsp->r[19]; break; case CPUINFO_INT_REGISTER + RSP_R20: info->i = rsp->r[20]; break; case CPUINFO_INT_REGISTER + RSP_R21: info->i = rsp->r[21]; break; case CPUINFO_INT_REGISTER + RSP_R22: info->i = rsp->r[22]; break; case CPUINFO_INT_REGISTER + RSP_R23: info->i = rsp->r[23]; break; case CPUINFO_INT_REGISTER + RSP_R24: info->i = rsp->r[24]; break; case CPUINFO_INT_REGISTER + RSP_R25: info->i = rsp->r[25]; break; case CPUINFO_INT_REGISTER + RSP_R26: info->i = rsp->r[26]; break; case CPUINFO_INT_REGISTER + RSP_R27: info->i = rsp->r[27]; break; case CPUINFO_INT_REGISTER + RSP_R28: info->i = rsp->r[28]; break; case CPUINFO_INT_REGISTER + RSP_R29: info->i = rsp->r[29]; break; case CPUINFO_INT_REGISTER + RSP_R30: info->i = rsp->r[30]; break; case CPUINFO_INT_SP: case CPUINFO_INT_REGISTER + RSP_R31: info->i = rsp->r[31]; break; case CPUINFO_INT_REGISTER + RSP_SR: info->i = rsp->sr; break; case CPUINFO_INT_REGISTER + RSP_NEXTPC: info->i = rsp->nextpc; break; case CPUINFO_INT_REGISTER + RSP_STEPCNT: info->i = rsp->step_count; break; /* --- the following bits of info are returned as pointers to data or functions --- */ case CPUINFO_FCT_SET_INFO: info->setinfo = CPU_SET_INFO_NAME(rsp); break; case CPUINFO_FCT_INIT: info->init = CPU_INIT_NAME(rsp); break; case CPUINFO_FCT_RESET: info->reset = CPU_RESET_NAME(rsp); break; case CPUINFO_FCT_EXIT: info->exit = CPU_EXIT_NAME(rsp); break; case CPUINFO_FCT_EXECUTE: info->execute = CPU_EXECUTE_NAME(rsp); break; case CPUINFO_FCT_BURN: info->burn = NULL; break; case CPUINFO_FCT_DISASSEMBLE: info->disassemble = CPU_DISASSEMBLE_NAME(rsp); break; case CPUINFO_PTR_INSTRUCTION_COUNTER: info->icount = &rsp->icount; break; /* --- the following bits of info are returned as NULL-terminated strings --- */ case DEVINFO_STR_NAME: strcpy(info->s, "RSP"); break; case DEVINFO_STR_FAMILY: strcpy(info->s, "RSP"); break; case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break; case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break; case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Nicola Salmoria and the MAME Team"); break; case CPUINFO_STR_FLAGS: strcpy(info->s, " "); break; case CPUINFO_STR_REGISTER + RSP_PC: sprintf(info->s, "PC: %08X", rsp->pc); break; case CPUINFO_STR_REGISTER + RSP_R0: sprintf(info->s, "R0: %08X", rsp->r[0]); break; case CPUINFO_STR_REGISTER + RSP_R1: sprintf(info->s, "R1: %08X", rsp->r[1]); break; case CPUINFO_STR_REGISTER + RSP_R2: sprintf(info->s, "R2: %08X", rsp->r[2]); break; case CPUINFO_STR_REGISTER + RSP_R3: sprintf(info->s, "R3: %08X", rsp->r[3]); break; case CPUINFO_STR_REGISTER + RSP_R4: sprintf(info->s, "R4: %08X", rsp->r[4]); break; case CPUINFO_STR_REGISTER + RSP_R5: sprintf(info->s, "R5: %08X", rsp->r[5]); break; case CPUINFO_STR_REGISTER + RSP_R6: sprintf(info->s, "R6: %08X", rsp->r[6]); break; case CPUINFO_STR_REGISTER + RSP_R7: sprintf(info->s, "R7: %08X", rsp->r[7]); break; case CPUINFO_STR_REGISTER + RSP_R8: sprintf(info->s, "R8: %08X", rsp->r[8]); break; case CPUINFO_STR_REGISTER + RSP_R9: sprintf(info->s, "R9: %08X", rsp->r[9]); break; case CPUINFO_STR_REGISTER + RSP_R10: sprintf(info->s, "R10: %08X", rsp->r[10]); break; case CPUINFO_STR_REGISTER + RSP_R11: sprintf(info->s, "R11: %08X", rsp->r[11]); break; case CPUINFO_STR_REGISTER + RSP_R12: sprintf(info->s, "R12: %08X", rsp->r[12]); break; case CPUINFO_STR_REGISTER + RSP_R13: sprintf(info->s, "R13: %08X", rsp->r[13]); break; case CPUINFO_STR_REGISTER + RSP_R14: sprintf(info->s, "R14: %08X", rsp->r[14]); break; case CPUINFO_STR_REGISTER + RSP_R15: sprintf(info->s, "R15: %08X", rsp->r[15]); break; case CPUINFO_STR_REGISTER + RSP_R16: sprintf(info->s, "R16: %08X", rsp->r[16]); break; case CPUINFO_STR_REGISTER + RSP_R17: sprintf(info->s, "R17: %08X", rsp->r[17]); break; case CPUINFO_STR_REGISTER + RSP_R18: sprintf(info->s, "R18: %08X", rsp->r[18]); break; case CPUINFO_STR_REGISTER + RSP_R19: sprintf(info->s, "R19: %08X", rsp->r[19]); break; case CPUINFO_STR_REGISTER + RSP_R20: sprintf(info->s, "R20: %08X", rsp->r[20]); break; case CPUINFO_STR_REGISTER + RSP_R21: sprintf(info->s, "R21: %08X", rsp->r[21]); break; case CPUINFO_STR_REGISTER + RSP_R22: sprintf(info->s, "R22: %08X", rsp->r[22]); break; case CPUINFO_STR_REGISTER + RSP_R23: sprintf(info->s, "R23: %08X", rsp->r[23]); break; case CPUINFO_STR_REGISTER + RSP_R24: sprintf(info->s, "R24: %08X", rsp->r[24]); break; case CPUINFO_STR_REGISTER + RSP_R25: sprintf(info->s, "R25: %08X", rsp->r[25]); break; case CPUINFO_STR_REGISTER + RSP_R26: sprintf(info->s, "R26: %08X", rsp->r[26]); break; case CPUINFO_STR_REGISTER + RSP_R27: sprintf(info->s, "R27: %08X", rsp->r[27]); break; case CPUINFO_STR_REGISTER + RSP_R28: sprintf(info->s, "R28: %08X", rsp->r[28]); break; case CPUINFO_STR_REGISTER + RSP_R29: sprintf(info->s, "R29: %08X", rsp->r[29]); break; case CPUINFO_STR_REGISTER + RSP_R30: sprintf(info->s, "R30: %08X", rsp->r[30]); break; case CPUINFO_STR_REGISTER + RSP_R31: sprintf(info->s, "R31: %08X", rsp->r[31]); break; case CPUINFO_STR_REGISTER + RSP_SR: sprintf(info->s, "SR: %08X", rsp->sr); break; case CPUINFO_STR_REGISTER + RSP_NEXTPC: sprintf(info->s, "NPC: %08X", rsp->nextpc);break; case CPUINFO_STR_REGISTER + RSP_STEPCNT: sprintf(info->s, "STEP: %d", rsp->step_count); break; } } void rspdrc_set_options(running_device *device, UINT32 options) { } void rspdrc_add_imem(running_device *device, void *base) { } void rspdrc_add_dmem(running_device *device, void *base) { } void rspdrc_flush_drc_cache(running_device *device) { } DEFINE_LEGACY_CPU_DEVICE(RSP, rsp); #endif // USE_RSPDRC