--- /dev/null
+/*
+ * z64
+ *
+ * Copyright (C) 2007 ziggy
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+**/
+
+/*
+Nintendo/SGI Reality Signal Processor (RSP) emulator
+
+Written by Ville Linde
+*/
+// #include "z64.h"
+#include "rsp.h"
+#include "rsp_opinfo.h"
+#include <math.h> // sqrt
+#include <assert.h>
+#include <string.h>
+
+#define INLINE inline
+
+#define LOG_INSTRUCTION_EXECUTION 0
+#define SAVE_DISASM 0
+#define SAVE_DMEM 0
+
+#define PRINT_VECREG(x) printf("V%d: %04X|%04X|%04X|%04X|%04X|%04X|%04X|%04X\n", (x), \
+ (UINT16)VREG_S((x),0), (UINT16)VREG_S((x),1), \
+ (UINT16)VREG_S((x),2), (UINT16)VREG_S((x),3), \
+ (UINT16)VREG_S((x),4), (UINT16)VREG_S((x),5), \
+ (UINT16)VREG_S((x),6), (UINT16)VREG_S((x),7))
+
+
+extern offs_t rsp_dasm_one(char *buffer, offs_t pc, UINT32 op);
+
+#if LOG_INSTRUCTION_EXECUTION
+static FILE *exec_output;
+#endif
+
+
+// INLINE void sp_set_status(UINT32 status)
+// {
+// if (status & 0x1)
+// {
+// cpu_trigger(6789);
+
+// cpunum_set_input_line(1, INPUT_LINE_HALT, ASSERT_LINE);
+// rsp_sp_status |= SP_STATUS_HALT;
+// }
+// if (status & 0x2)
+// {
+// rsp_sp_status |= SP_STATUS_BROKE;
+
+// if (rsp_sp_status & SP_STATUS_INTR_BREAK)
+// {
+// signal_rcp_interrupt(SP_INTERRUPT);
+// }
+// }
+// }
+
+
+#if 0
+enum
+{
+ RSP_PC = 1,
+ RSP_R0,
+ RSP_R1,
+ RSP_R2,
+ RSP_R3,
+ RSP_R4,
+ RSP_R5,
+ RSP_R6,
+ RSP_R7,
+ RSP_R8,
+ RSP_R9,
+ RSP_R10,
+ RSP_R11,
+ RSP_R12,
+ RSP_R13,
+ RSP_R14,
+ RSP_R15,
+ RSP_R16,
+ RSP_R17,
+ RSP_R18,
+ RSP_R19,
+ RSP_R20,
+ RSP_R21,
+ RSP_R22,
+ RSP_R23,
+ RSP_R24,
+ RSP_R25,
+ RSP_R26,
+ RSP_R27,
+ RSP_R28,
+ RSP_R29,
+ RSP_R30,
+ RSP_R31,
+};
+#endif
+
+
+#ifdef RSPTIMING
+uint64_t rsptimings[512];
+int rspcounts[512];
+#endif
+
+
+#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] = sp_pc + 4; }
+#define JUMP_REL(offset) { rsp.nextpc = 0x04001000 | ((sp_pc + ((offset) << 2)) & 0xfff); }
+#define JUMP_REL_L(offset,l) { rsp.nextpc = 0x04001000 | ((sp_pc + ((offset) << 2)) & 0xfff); rsp.r[l] = sp_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] = sp_pc + 4; }
+#define LINK(l) rsp.r[l] = sp_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) (z)
+#define VEC_EL_2(x,z) (vector_elements_2[(x)][(z)])
+
+#define ACCUM(x) rsp.accum[((x))].q
+
+#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)))
+
+
+
+RSP_REGS rsp;
+static int rsp_icount;
+// RSP Interface
+
+#define rsp_sp_status (*(UINT32*)z64_rspinfo.SP_STATUS_REG)
+#define sp_mem_addr (*(UINT32*)z64_rspinfo.SP_MEM_ADDR_REG)
+#define sp_dram_addr (*(UINT32*)z64_rspinfo.SP_DRAM_ADDR_REG)
+#define sp_semaphore (*(UINT32*)z64_rspinfo.SP_SEMAPHORE_REG)
+
+#define sp_dma_rlength (*(UINT32*)z64_rspinfo.SP_RD_LEN_REG)
+#define sp_dma_wlength (*(UINT32*)z64_rspinfo.SP_WR_LEN_REG)
+
+INT32 sp_dma_length;
+
+/*****************************************************************************/
+
+UINT32 get_cop0_reg(int reg)
+{
+ if (reg >= 0 && reg < 8)
+ {
+ return sp_read_reg(reg);
+ }
+ else if (reg >= 8 && reg < 16)
+ {
+ return n64_dp_reg_r(reg - 8, 0x00000000);
+ }
+ else
+ {
+ log(M64MSG_ERROR, "RSP: get_cop0_reg: %d", reg);
+ return ~0;
+ }
+}
+
+void set_cop0_reg(int reg, UINT32 data)
+{
+ if (reg >= 0 && reg < 8)
+ {
+ sp_write_reg(reg, data);
+ }
+ else if (reg >= 8 && reg < 16)
+ {
+ n64_dp_reg_w(reg - 8, data, 0x00000000);
+ }
+ else
+ {
+ log(M64MSG_ERROR, "RSP: set_cop0_reg: %d, %08X\n", reg, data);
+ }
+}
+
+static int got_unimp;
+void unimplemented_opcode(UINT32 op)
+{
+ got_unimp = 1;
+#ifdef MAME_DEBUG
+ char string[200];
+ rsp_dasm_one(string, rsp.ppc, op);
+ printf("%08X: %s\n", rsp.ppc, string);
+#endif
+
+#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(0x04000000 + i), dmem);
+ }
+ fclose(dmem);
+ }
+#endif
+
+ log(M64MSG_ERROR, "RSP: unknown opcode %02X (%d) (%08X) at %08X\n", op >> 26, op >> 26, op, rsp.ppc);
+}
+
+/*****************************************************************************/
+
+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
+};
+
+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
+};
+
+void rsp_init(RSP_INFO info)
+{
+#if LOG_INSTRUCTION_EXECUTION
+ exec_output = fopen("rsp_execute.txt", "wt");
+#endif
+
+ memset(&rsp, 0, sizeof(rsp));
+ rsp.ext = info;
+
+ sp_pc = 0; //0x4001000;
+ rsp.nextpc = ~0U;
+ //rsp_invalidate(0, 0x1000);
+ rsp.step_count=0;
+}
+
+void rsp_reset(void)
+{
+ rsp.nextpc = ~0U;
+}
+
+void handle_lwc2(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;
+ VREG_B(dest, index) = READ8(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;
+
+ // VP need mask i and ea ?
+ for (i=index; i < end; i++)
+ {
+ VREG_B(dest, i) = READ8(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;
+
+ // VP need mask i and ea ?
+ for (i=index; i < end; i++)
+ {
+ VREG_B(dest, i) = READ8(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;
+
+ // VP need mask i and ea ?
+ for (i=index; i < end; i++)
+ {
+ VREG_B(dest, i) = READ8(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++)
+ {
+ VREG_B(dest, i) = READ8(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;
+ //assert(index == 0);
+
+ for (i=index; i < end; i++)
+ {
+ VREG_B(dest, i) = READ8(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++)
+ {
+ VREG_S(dest, i) = READ8(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++)
+ {
+ VREG_S(dest, i) = READ8(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++)
+ {
+ VREG_S(dest, i) = READ8(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++)
+ {
+ VREG_S(dest, i) = READ8(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++)
+ {
+ VREG_B(dest, i & 0xf) = READ8(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);
+ VREG_B(i, (element & 0xf)) = READ8(ea);
+ VREG_B(i, ((element+1) & 0xf)) = READ8(ea+1);
+
+ ea += 2;
+ }
+ break;
+ }
+
+ default:
+ {
+ unimplemented_opcode(op);
+ break;
+ }
+ }
+}
+
+void handle_swc2(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(ea, 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(ea, 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(ea, 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(ea, 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));
+ // if (end != 16)
+ // printf("SQV %d\n", end-index);
+ //assert(end == 16);
+
+ for (i=index; i < end; i++)
+ {
+ WRITE8(ea, 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;
+ // if (end != 16)
+ // printf("SRV %d\n", end-index);
+ //assert(end == 16);
+
+ for (i=index; i < end; i++)
+ {
+ WRITE8(ea, 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(ea, VREG_B(dest, ((i & 0xf) << 1)));
+ }
+ else
+ {
+ WRITE8(ea, 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(ea, VREG_S(dest, (i & 0x7)) >> 7);
+ }
+ else
+ {
+ WRITE8(ea, 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 = ((VREG_B(dest, ((index + (i << 1) + 0) & 0xf))) << 1) |
+ ((VREG_B(dest, ((index + (i << 1) + 1) & 0xf))) >> 7);
+
+ WRITE8(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)
+ log(M64MSG_WARNING, "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(ea + (eaoffset & 0xf), 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(ea + (eaoffset & 0xf), 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, eaoffset;
+ 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(ea + (eaoffset & 0xf), VREG_S(i, element & 0x7));
+ eaoffset += 2;
+ element++;
+ }
+ break;
+ }
+
+ default:
+ {
+ unimplemented_opcode(op);
+ break;
+ }
+ }
+}
+
+#define U16MIN 0x0000
+#define U16MAX 0xffff
+
+#define S16MIN 0x8000
+#define S16MAX 0x7fff
+
+INLINE UINT16 SATURATE_ACCUM_U(int accum)
+{
+ if ((INT16)ACCUM_H(accum) < 0)
+ {
+ if ((UINT16)(ACCUM_H(accum)) != 0xffff)
+ {
+ return U16MIN;
+ }
+ else
+ {
+ if ((INT16)ACCUM_M(accum) >= 0)
+ {
+ return U16MIN;
+ }
+ else
+ {
+ return ACCUM_L(accum);
+ }
+ }
+ }
+ else
+ {
+ if ((UINT16)(ACCUM_H(accum)) != 0)
+ {
+ return U16MAX;
+ }
+ else
+ {
+ if ((INT16)ACCUM_M(accum) < 0)
+ {
+ return U16MAX;
+ }
+ else
+ {
+ return ACCUM_L(accum);
+ }
+ }
+ }
+
+ return 0;
+}
+
+INLINE UINT16 SATURATE_ACCUM_S(int accum)
+{
+ if ((INT16)ACCUM_H(accum) < 0)
+ {
+ if ((UINT16)(ACCUM_H(accum)) != 0xffff)
+ return S16MIN;
+ else
+ {
+ if ((INT16)ACCUM_M(accum) >= 0)
+ return S16MIN;
+ else
+ return ACCUM_M(accum);
+ }
+ }
+ else
+ {
+ if ((UINT16)(ACCUM_H(accum)) != 0)
+ return S16MAX;
+ else
+ {
+ if ((INT16)ACCUM_M(accum) < 0)
+ return S16MAX;
+ else
+ return ACCUM_M(accum);
+ }
+ }
+
+ return 0;
+}
+
+#define WRITEBACK_RESULT() \
+ do { \
+ VREG_S(VDREG, 0) = vres[0]; \
+ VREG_S(VDREG, 1) = vres[1]; \
+ VREG_S(VDREG, 2) = vres[2]; \
+ VREG_S(VDREG, 3) = vres[3]; \
+ VREG_S(VDREG, 4) = vres[4]; \
+ VREG_S(VDREG, 5) = vres[5]; \
+ VREG_S(VDREG, 6) = vres[6]; \
+ VREG_S(VDREG, 7) = vres[7]; \
+ } while(0)
+
+
+void handle_vector_ops(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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ if (s1 == -32768 && s2 == -32768)
+ {
+ // overflow
+ ACCUM_H(del) = 0;
+ ACCUM_M(del) = -32768;
+ ACCUM_L(del) = -32768;
+ vres[del] = 0x7fff;
+ }
+ else
+ {
+ INT64 r = s1 * s2 * 2;
+ r += 0x8000; // rounding ?
+ ACCUM_H(del) = (r < 0) ? 0xffff : 0; // sign-extend to 48-bit
+ ACCUM_M(del) = (INT16)(r >> 16);
+ ACCUM_L(del) = (UINT16)(r);
+ vres[del] = 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT64 r = s1 * s2 * 2;
+ r += 0x8000; // rounding ?
+
+ ACCUM_H(del) = (UINT16)(r >> 32);
+ ACCUM_M(del) = (UINT16)(r >> 16);
+ ACCUM_L(del) = (UINT16)(r);
+
+ if (r < 0)
+ {
+ vres[del] = 0;
+ }
+ else if (((INT16)(ACCUM_H(del)) ^ (INT16)(ACCUM_M(del))) < 0)
+ {
+ vres[del] = -1;
+ }
+ else
+ {
+ vres[del] = 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)VREG_S(VS1REG, del);
+ UINT32 s2 = (UINT32)(UINT16)VREG_S(VS2REG, sel);
+ UINT32 r = s1 * s2;
+
+ ACCUM_H(del) = 0;
+ ACCUM_M(del) = 0;
+ ACCUM_L(del) = (UINT16)(r >> 16);
+
+ vres[del] = 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)VREG_S(VS1REG, del);
+ INT32 s2 = (UINT16)VREG_S(VS2REG, sel); // not sign-extended
+ INT32 r = s1 * s2;
+
+ ACCUM_H(del) = (r < 0) ? 0xffff : 0; // sign-extend to 48-bit
+ ACCUM_M(del) = (INT16)(r >> 16);
+ ACCUM_L(del) = (UINT16)(r);
+
+ vres[del] = 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)VREG_S(VS1REG, del); // not sign-extended
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 * s2;
+
+ ACCUM_H(del) = (r < 0) ? 0xffff : 0; // sign-extend to 48-bit
+ ACCUM_M(del) = (INT16)(r >> 16);
+ ACCUM_L(del) = (UINT16)(r);
+
+ vres[del] = 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 * s2;
+
+ ACCUM_H(del) = (INT16)(r >> 16);
+ ACCUM_M(del) = (UINT16)(r);
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 * s2;
+
+ ACCUM(del) += (INT64)(r) << 17;
+ res = SATURATE_ACCUM_S(del);
+
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r1 = s1 * s2;
+ UINT32 r2 = (UINT16)ACCUM_L(del) + ((UINT16)(r1) * 2);
+ UINT32 r3 = (UINT16)ACCUM_M(del) + (UINT16)((r1 >> 16) * 2) + (UINT16)(r2 >> 16);
+
+ ACCUM_L(del) = (UINT16)(r2);
+ ACCUM_M(del) = (UINT16)(r3);
+ ACCUM_H(del) += (UINT16)(r3 >> 16) + (UINT16)(r1 >> 31);
+
+ //res = SATURATE_ACCUM(del, 1, 0x0000, 0xffff);
+ if ((INT16)ACCUM_H(del) < 0)
+ {
+ res = 0;
+ }
+ else
+ {
+ if (ACCUM_H(del) != 0)
+ {
+ res = 0xffff;
+ }
+ else
+ {
+ if ((INT16)ACCUM_M(del) < 0)
+ {
+ res = 0xffff;
+ }
+ else
+ {
+ res = 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)VREG_S(VS1REG, del);
+ UINT32 s2 = (UINT32)(UINT16)VREG_S(VS2REG, sel);
+ UINT32 r1 = s1 * s2;
+ UINT32 r2 = (UINT16)ACCUM_L(del) + (r1 >> 16);
+ UINT32 r3 = (UINT16)ACCUM_M(del) + (r2 >> 16);
+
+ ACCUM_L(del) = (UINT16)(r2);
+ ACCUM_M(del) = (UINT16)(r3);
+ ACCUM_H(del) += (INT16)(r3 >> 16);
+
+ res = SATURATE_ACCUM_U(del);
+
+ 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)VREG_S(VS1REG, del);
+ UINT32 s2 = (UINT16)VREG_S(VS2REG, sel); // not sign-extended
+ UINT32 r1 = s1 * s2;
+ UINT32 r2 = (UINT16)ACCUM_L(del) + (UINT16)(r1);
+ UINT32 r3 = (UINT16)ACCUM_M(del) + (r1 >> 16) + (r2 >> 16);
+
+ ACCUM_L(del) = (UINT16)(r2);
+ ACCUM_M(del) = (UINT16)(r3);
+ ACCUM_H(del) += (UINT16)(r3 >> 16);
+ if ((INT32)(r1) < 0)
+ ACCUM_H(del) -= 1;
+
+ res = SATURATE_ACCUM_S(del);
+
+ 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
+
+#if 1
+ for (i=0; i < 8; i++)
+ {
+ int del = VEC_EL_1(EL, i);
+ int sel = VEC_EL_2(EL, del);
+ INT32 s1 = (UINT16)VREG_S(VS1REG, del); // not sign-extended
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ ACCUM(del) += (INT64)(s1*s2)<<16;
+ }
+
+ for (i=0; i < 8; i++)
+ {
+ UINT16 res;
+ res = SATURATE_ACCUM_U(i);
+ //res = ACCUM_L(i);
+
+ VREG_S(VDREG, i) = res;
+ }
+#else
+ 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)VREG_S(VS1REG, del); // not sign-extended
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ UINT32 r1 = s1 * s2;
+ UINT32 r2 = (UINT16)ACCUM_L(del) + (UINT16)(r1);
+ UINT32 r3 = (UINT16)ACCUM_M(del) + (r1 >> 16) + (r2 >> 16);
+
+ ACCUM_L(del) = (UINT16)(r2);
+ ACCUM_M(del) = (UINT16)(r3);
+ ACCUM_H(del) += (UINT16)(r3 >> 16);
+ if ((INT32)(r1) < 0)
+ ACCUM_H(del) -= 1;
+
+ res = SATURATE_ACCUM_U(del);
+
+ vres[del] = res;
+ }
+ WRITEBACK_RESULT();
+#endif
+ 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
+
+#if 1
+ for (i=0; i < 8; i++)
+ {
+ int del = VEC_EL_1(EL, i);
+ int sel = VEC_EL_2(EL, del);
+ INT32 s1 = (INT32)(INT16)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+
+ rsp.accum[del].l[1] += s1*s2;
+
+ }
+ for (i=0; i < 8; i++)
+ {
+ UINT16 res;
+ res = SATURATE_ACCUM_S(i);
+ //res = ACCUM_M(i);
+
+ VREG_S(VDREG, i) = res;
+ }
+#else
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT64 r = s1 * s2;
+
+ ACCUM(del) += (INT64)(r) << 32;
+
+ res = SATURATE_ACCUM_S(del);
+
+ vres[del] = res;
+ }
+ WRITEBACK_RESULT();
+#endif
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 + s2 + CARRY_FLAG(del);
+
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (INT32)(INT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 - s2 - CARRY_FLAG(del);
+
+ 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)VREG_S(VS1REG, del);
+ INT16 s2 = (INT16)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;
+ }
+
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (UINT32)(UINT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 + s2;
+
+ vres[del] = (INT16)(r);
+ 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)VREG_S(VS1REG, del);
+ INT32 s2 = (UINT32)(UINT16)VREG_S(VS2REG, sel);
+ INT32 r = s1 - s2;
+
+ vres[del] = (INT16)(r);
+ 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++)
+ {
+ VREG_S(VDREG, i) = ACCUM_H(i);
+ }
+ break;
+ }
+ case 0x09: // VSAWM
+ {
+ for (i=0; i < 8; i++)
+ {
+ VREG_S(VDREG, i) = ACCUM_M(i);
+ }
+ break;
+ }
+ case 0x0a: // VSAWL
+ {
+ for (i=0; i < 8; i++)
+ {
+ VREG_S(VDREG, i) = ACCUM_L(i);
+ }
+ break;
+ }
+ default: log(M64MSG_ERROR, "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 (VREG_S(VS1REG, del) < VREG_S(VS2REG, sel))
+ {
+ vres[del] = VREG_S(VS1REG, del);
+ SET_COMPARE_FLAG(del);
+ }
+ else if (VREG_S(VS1REG, del) == VREG_S(VS2REG, sel))
+ {
+ vres[del] = VREG_S(VS1REG, del);
+ if (ZERO_FLAG(del) != 0 && CARRY_FLAG(del) != 0)
+ {
+ SET_COMPARE_FLAG(del);
+ }
+ }
+ else
+ {
+ vres[del] = VREG_S(VS2REG, sel);
+ }
+
+ 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] = VREG_S(VS2REG, sel);
+ ACCUM_L(del) = vres[del];
+
+ if (VREG_S(VS1REG, del) == 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] = VREG_S(VS1REG, del);
+ ACCUM_L(del) = vres[del];
+
+ if (VREG_S(VS1REG, del) != 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 (VREG_S(VS1REG, del) == VREG_S(VS2REG, sel))
+ {
+ if (ZERO_FLAG(del) == 0 || CARRY_FLAG(del) == 0)
+ {
+ SET_COMPARE_FLAG(del);
+ }
+ }
+ else if (VREG_S(VS1REG, del) > VREG_S(VS2REG, sel))
+ {
+ SET_COMPARE_FLAG(del);
+ }
+
+ if (COMPARE_FLAG(del) != 0)
+ {
+ vres[del] = VREG_S(VS1REG, del);
+ }
+ else
+ {
+ vres[del] = VREG_S(VS2REG, sel);
+ }
+
+ 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 = VREG_S(VS1REG, del);
+ INT16 s2 = VREG_S(VS2REG, sel);
+
+ if (CARRY_FLAG(del) != 0)
+ {
+ if (ZERO_FLAG(del) != 0)
+ {
+ if (COMPARE_FLAG(del) != 0)
+ {
+ ACCUM_L(del) = -(UINT16)s2;
+ }
+ else
+ {
+ ACCUM_L(del) = s1;
+ }
+ }
+ else
+ {
+ if (rsp.flag[2] & (1 << (del)))
+ {
+ if (((UINT32)(INT16)(s1) + (UINT32)(INT16)(s2)) > 0x10000)
+ {
+ ACCUM_L(del) = s1;
+ CLEAR_COMPARE_FLAG(del);
+ }
+ else
+ {
+ ACCUM_L(del) = -((UINT16)s2);
+ SET_COMPARE_FLAG(del);
+ }
+ }
+ else
+ {
+ if (((UINT32)(INT16)(s1) + (UINT32)(INT16)(s2)) != 0)
+ {
+ ACCUM_L(del) = s1;
+ CLEAR_COMPARE_FLAG(del);
+ }
+ else
+ {
+ ACCUM_L(del) = -((UINT16)s2);
+ SET_COMPARE_FLAG(del);
+ }
+ }
+ }
+ }
+ else
+ {
+ if (ZERO_FLAG(del) != 0)
+ {
+ if (rsp.flag[1] & (1 << (8+del)))
+ {
+ ACCUM_L(del) = s2;
+ }
+ else
+ {
+ ACCUM_L(del) = s1;
+ }
+ }
+ else
+ {
+ if (((INT32)(UINT16)s1 - (INT32)(UINT16)s2) >= 0)
+ {
+ ACCUM_L(del) = s2;
+ rsp.flag[1] |= (1 << (8+del));
+ }
+ else
+ {
+ ACCUM_L(del) = s1;
+ rsp.flag[1] &= ~(1 << (8+del));
+ }
+ }
+ }
+
+ vres[del] = 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 = VREG_S(VS1REG, del);
+ INT16 s2 = 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);
+ }
+ }
+ }
+
+ 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 = VREG_S(VS1REG, del);
+ INT16 s2 = VREG_S(VS2REG, sel);
+
+ if ((INT16)(s1 ^ s2) < 0)
+ {
+ if (s2 < 0)
+ {
+ rsp.flag[1] |= (1 << (8+del));
+ }
+ if ((s1 + s2) <= 0)
+ {
+ ACCUM_L(del) = ~((UINT16)s2);
+ SET_COMPARE_FLAG(del);
+ }
+ else
+ {
+ ACCUM_L(del) = s1;
+ }
+ }
+ else
+ {
+ if (s2 < 0)
+ {
+ SET_COMPARE_FLAG(del);
+ }
+ if ((s1 - s2) >= 0)
+ {
+ ACCUM_L(del) = s2;
+ rsp.flag[1] |= (1 << (8+del));
+ }
+ else
+ {
+ ACCUM_L(del) = s1;
+ }
+ }
+
+ vres[del] = 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] = VREG_S(VS1REG, del);
+ }
+ else
+ {
+ vres[del] = VREG_S(VS2REG, VEC_EL_2(EL, sel));
+ }
+
+ 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] = VREG_S(VS1REG, del) & VREG_S(VS2REG, sel);
+ 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] = ~((VREG_S(VS1REG, del) & VREG_S(VS2REG, sel)));
+ 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] = VREG_S(VS1REG, del) | VREG_S(VS2REG, sel);
+ 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] = ~((VREG_S(VS1REG, del) | VREG_S(VS2REG, sel)));
+ 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] = VREG_S(VS1REG, del) ^ VREG_S(VS2REG, sel);
+ 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] = ~((VREG_S(VS1REG, del) ^ VREG_S(VS2REG, sel)));
+ 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; //VEC_EL_2(EL, del);
+ INT32 rec;
+
+ rec = (INT16)(VREG_S(VS2REG, sel));
+
+ if (rec == 0)
+ {
+ // divide by zero -> overflow
+ rec = 0x7fffffff;
+ }
+ else
+ {
+ int negative = 0;
+ if (rec < 0)
+ {
+ rec = ~rec+1;
+ negative = 1;
+ }
+ for (i = 15; i > 0; i--)
+ {
+ if (rec & (1 << i))
+ {
+ rec &= ((0xffc0) >> (15 - i));
+ i = 0;
+ }
+ }
+ rec = (INT32)(0x7fffffff / (double)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);
+ ACCUM_L(i) = VREG_S(VS2REG, element);
+ }
+
+ rsp.reciprocal_res = rec;
+
+ 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)(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);
+ ACCUM_L(i) = VREG_S(VS2REG, element);
+ }
+
+ rsp.reciprocal_res = rec;
+
+ 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 = VREG_S(VS2REG, sel);
+
+ for (i=0; i < 8; i++)
+ {
+ int element = VEC_EL_2(EL, i);
+ ACCUM_L(i) = VREG_S(VS2REG, element); // perhaps accumulator is used to store the intermediate values ?
+ }
+
+ 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;
+ VREG_S(VDREG, element) = 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);
+ UINT32 sqr;
+
+ sqr = (UINT16)(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 > 0x7fffffff)
+ {
+ 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(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);
+ ACCUM_L(i) = VREG_S(VS2REG, element);
+ }
+
+ rsp.square_root_res = sqr;
+
+ 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 = VREG_S(VS2REG, sel);
+
+ for (i=0; i < 8; i++)
+ {
+ int element = VEC_EL_2(EL, i);
+ ACCUM_L(i) = VREG_S(VS2REG, element); // perhaps accumulator is used to store the intermediate values ?
+ }
+
+ VREG_S(VDREG, del) = (INT16)(rsp.square_root_res >> 16); // store high part
+ break;
+ }
+
+ default: unimplemented_opcode(op); break;
+ }
+}
+
+int rsp_execute(int cycles)
+{
+ UINT32 op;
+
+ rsp_icount=1; //cycles;
+
+ UINT32 ExecutedCycles=0;
+ UINT32 BreakMarker=0;
+ UINT32 WDCHackFlag1=0;
+ UINT32 WDCHackFlag2=0;
+
+ sp_pc = /*0x4001000 | */(sp_pc & 0xfff);
+ if( rsp_sp_status & (SP_STATUS_HALT|SP_STATUS_BROKE))
+ {
+ log(M64MSG_WARNING, "Quit due to SP halt/broke on start");
+ rsp_icount = 0;
+ }
+
+
+ while (rsp_icount > 0)
+ {
+#ifdef RSPTIMING
+ uint64_t lasttime;
+ lasttime = RDTSC();
+#endif
+ rsp.ppc = sp_pc;
+
+
+ op = ROPCODE(sp_pc);
+#ifdef GENTRACE
+ char s[128];
+ rsp_dasm_one(s, sp_pc, op);
+ GENTRACE("%2x %3x\t%s\n", ((UINT8*)rsp_dmem)[0x1934], sp_pc, s);
+#endif
+
+ if (rsp.nextpc != ~0U)///DELAY SLOT USAGE
+ {
+ sp_pc = /*0x4001000 | */(rsp.nextpc & 0xfff); //rsp.nextpc;
+ rsp.nextpc = ~0U;
+ }
+ else
+ {
+ sp_pc = /*0x4001000 | */((sp_pc+4)&0xfff);
+ }
+
+ 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 */
+ {
+ *z64_rspinfo.SP_STATUS_REG |= (SP_STATUS_HALT | SP_STATUS_BROKE );
+ if ((*z64_rspinfo.SP_STATUS_REG & SP_STATUS_INTR_BREAK) != 0 ) {
+ *z64_rspinfo.MI_INTR_REG |= 1;
+ z64_rspinfo.CheckInterrupts();
+ }
+ //sp_set_status(0x3);
+ rsp_icount = 0;
+
+ BreakMarker=1;
+
+#if LOG_INSTRUCTION_EXECUTION
+ fprintf(exec_output, "\n---------- break ----------\n\n");
+#endif
+ 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(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;
+ // VP according to the doc, link is performed even when condition fails,
+ // this sound pretty stupid but let's try it that way
+ case 0x11: /* BGEZAL */ LINK(31); if ((INT32)(RSVAL) >= 0) JUMP_REL(SIMM16); break;
+ //case 0x11: /* BGEZAL */ if ((INT32)(RSVAL) >= 0) JUMP_REL_L(SIMM16, 31); break;
+ default: unimplemented_opcode(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(RDREG); break;
+ case 0x04: /* MTC0 */ set_cop0_reg(RDREG, RTVAL); break;
+ default:
+ log(M64MSG_WARNING, "unimplemented cop0 %x (%x)\n", (op >> 21) & 0x1f, 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 = VREG_B(VS1REG, (el+0) & 0xf);
+ UINT16 b2 = 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;
+ VREG_B(VS1REG, (el+0) & 0xf) = (RTVAL >> 8) & 0xff;
+ 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(op);
+ break;
+ }
+
+ default: unimplemented_opcode(op); break;
+ }
+ break;
+ }
+
+ case 0x20: /* LB */ if (RTREG) RTVAL = (INT32)(INT8)READ8(RSVAL + SIMM16); break;
+ case 0x21: /* LH */ if (RTREG) RTVAL = (INT32)(INT16)READ16(RSVAL + SIMM16); break;
+ case 0x23: /* LW */ if (RTREG) RTVAL = READ32(RSVAL + SIMM16); break;
+ case 0x24: /* LBU */ if (RTREG) RTVAL = (UINT8)READ8(RSVAL + SIMM16); break;
+ case 0x25: /* LHU */ if (RTREG) RTVAL = (UINT16)READ16(RSVAL + SIMM16); break;
+ case 0x28: /* SB */ WRITE8(RSVAL + SIMM16, RTVAL); break;
+ case 0x29: /* SH */ WRITE16(RSVAL + SIMM16, RTVAL); break;
+ case 0x2b: /* SW */ WRITE32(RSVAL + SIMM16, RTVAL); break;
+ case 0x32: /* LWC2 */ handle_lwc2(op); break;
+ case 0x3a: /* SWC2 */ handle_swc2(op); break;
+
+ default:
+ {
+ unimplemented_opcode(op);
+ break;
+ }
+ }
+
+#ifdef RSPTIMING
+ uint64_t time = lasttime;
+ lasttime = RDTSC();
+ rsp_opinfo_t info;
+ rsp_get_opinfo(op, &info);
+ rsptimings[info.op2] += lasttime - time;
+ rspcounts[info.op2]++;
+#endif
+
+#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(exec_output, "%08X: %s", rsp.ppc, string);
+
+ l = strlen(string);
+ if (l < 36)
+ {
+ for (i=l; i < 36; i++)
+ {
+ fprintf(exec_output, " ");
+ }
+ }
+
+ fprintf(exec_output, "| ");
+
+ for (i=0; i < 32; i++)
+ {
+ if (rsp.r[i] != prev_regs[i])
+ {
+ fprintf(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(exec_output, "V%d: %04X|%04X|%04X|%04X|%04X|%04X|%04X|%04X ", i,
+ (UINT16)VREG_S(i,0), (UINT16)VREG_S(i,1), (UINT16)VREG_S(i,2), (UINT16)VREG_S(i,3), (UINT16)VREG_S(i,4), (UINT16)VREG_S(i,5), (UINT16)VREG_S(i,6), (UINT16)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(exec_output, "\n");
+
+ }
+#endif
+ // --rsp_icount;
+
+ ExecutedCycles++;
+ if( rsp_sp_status & SP_STATUS_SSTEP )
+ {
+ if( rsp.step_count )
+ {
+ rsp.step_count--;
+ }
+ else
+ {
+ rsp_sp_status |= SP_STATUS_BROKE;
+ }
+ }
+
+ if( rsp_sp_status & (SP_STATUS_HALT|SP_STATUS_BROKE))
+ {
+ rsp_icount = 0;
+
+ if(BreakMarker==0)
+ log(M64MSG_WARNING, "Quit due to SP halt/broke set by MTC0\n");
+ }
+
+ ///WDC&SR64 hack:VERSION3:1.8x -2x FASTER & safer
+ if((WDCHackFlag1==0)&&(rsp.ppc>0x137)&&(rsp.ppc<0x14D))
+ WDCHackFlag1=ExecutedCycles;
+ if ((WDCHackFlag1!=0)&&((rsp.ppc<=0x137)||(rsp.ppc>=0x14D)))
+ WDCHackFlag1=0;
+ if ((WDCHackFlag1!=0)&&((ExecutedCycles-WDCHackFlag1)>=0x20)&&(rsp.ppc>0x137)&&(rsp.ppc<0x14D))
+ {
+ // printf("WDC hack quit 1\n");
+ rsp_icount=0;//32 cycles should be enough
+ }
+ if((WDCHackFlag2==0)&&(rsp.ppc>0xFCB)&&(rsp.ppc<0xFD5))
+ WDCHackFlag2=ExecutedCycles;
+ if ((WDCHackFlag2!=0)&&((rsp.ppc<=0xFCB)||(rsp.ppc>=0xFD5)))
+ WDCHackFlag2=0;
+ if ((WDCHackFlag2!=0)&&((ExecutedCycles-WDCHackFlag2)>=0x20)&&(rsp.ppc>0xFCB)&&(rsp.ppc<0xFD5))
+ {
+ // printf("WDC hack quit 2\n");
+ rsp_icount=0;//32 cycles should be enough
+ }
+
+
+ }
+ //sp_pc -= 4;
+
+ return ExecutedCycles;
+}
+
+/*****************************************************************************/
+
+
+enum sp_dma_direction
+{
+ SP_DMA_RDRAM_TO_IDMEM,
+ SP_DMA_IDMEM_TO_RDRAM
+};
+
+static void sp_dma(enum sp_dma_direction direction)
+{
+ UINT8 *src, *dst;
+ int i, j;
+ int length;
+ int count;
+ int skip;
+
+
+ UINT32 l = sp_dma_length;
+ length = ((l & 0xfff) | 7) + 1;
+ skip = (l >> 20) + length;
+ count = ((l >> 12) & 0xff) + 1;
+
+ if (direction == SP_DMA_RDRAM_TO_IDMEM) // RDRAM -> I/DMEM
+ {
+ //UINT32 src_address = sp_dram_addr & ~7;
+ //UINT32 dst_address = (sp_mem_addr & 0x1000) ? 0x4001000 : 0x4000000;
+ src = (UINT8*)&rdram[(sp_dram_addr&~7) / 4];
+ dst = (sp_mem_addr & 0x1000) ? (UINT8*)&rsp_imem[(sp_mem_addr & ~7 & 0xfff) / 4] : (UINT8*)&rsp_dmem[(sp_mem_addr & ~7 &0xfff) / 4];
+ ///cpuintrf_push_context(0);
+#define BYTE8_XOR_BE(a) ((a)^7)// JFG, Ocarina of Time
+
+ for (j=0; j < count; j++)
+ {
+ for (i=0; i < length; i++)
+ {
+ ///UINT8 b = program_read_byte_64be(src_address + i + (j*skip));
+ ///program_write_byte_64be(dst_address + (((sp_mem_addr & ~7) + i + (j*length)) & 0xfff), b);
+ dst[BYTE8_XOR_BE((i + j*length)&0xfff)] = src[BYTE8_XOR_BE(i + j*skip)];
+ }
+ }
+
+ ///cpuintrf_pop_context();
+ *z64_rspinfo.SP_DMA_BUSY_REG = 0;
+ *z64_rspinfo.SP_STATUS_REG &= ~SP_STATUS_DMABUSY;
+ }
+ else if (direction == SP_DMA_IDMEM_TO_RDRAM) // I/DMEM -> RDRAM
+ {
+ //UINT32 dst_address = sp_dram_addr & ~7;
+ //UINT32 src_address = (sp_mem_addr & 0x1000) ? 0x4001000 : 0x4000000;
+
+ dst = (UINT8*)&rdram[(sp_dram_addr&~7) / 4];
+ src = (sp_mem_addr & 0x1000) ? (UINT8*)&rsp_imem[(sp_mem_addr & ~7 & 0xfff) / 4] : (UINT8*)&rsp_dmem[(sp_mem_addr & ~7 &0xfff) / 4];
+ ///cpuintrf_push_context(0);
+
+ for (j=0; j < count; j++)
+ {
+ for (i=0; i < length; i++)
+ {
+ ///UINT8 b = program_read_byte_64be(src_address + (((sp_mem_addr & ~7) + i + (j*length)) & 0xfff));
+ ///program_write_byte_64be(dst_address + i + (j*skip), b);
+ dst[BYTE8_XOR_BE(i + j*skip)] = src[BYTE8_XOR_BE((+i + j*length)&0xfff)];
+ }
+ }
+
+ ///cpuintrf_pop_context();
+ *z64_rspinfo.SP_DMA_BUSY_REG = 0;
+ *z64_rspinfo.SP_STATUS_REG &= ~SP_STATUS_DMABUSY;
+ }
+
+
+}
+
+
+
+
+
+UINT32 n64_sp_reg_r(UINT32 offset, UINT32 dummy)
+{
+ switch (offset)
+ {
+ case 0x00/4: // SP_MEM_ADDR_REG
+ return sp_mem_addr;
+
+ case 0x04/4: // SP_DRAM_ADDR_REG
+ return sp_dram_addr;
+
+ case 0x08/4: // SP_RD_LEN_REG
+ return sp_dma_rlength;
+
+ case 0x10/4: // SP_STATUS_REG
+ return rsp_sp_status;
+
+ case 0x14/4: // SP_DMA_FULL_REG
+ return 0;
+
+ case 0x18/4: // SP_DMA_BUSY_REG
+ return 0;
+
+ case 0x1c/4: // SP_SEMAPHORE_REG
+ return sp_semaphore;
+
+ default:
+ log(M64MSG_WARNING, "sp_reg_r: %08X\n", offset);
+ break;
+ }
+
+ return 0;
+}
+
+//UINT32 n64_sp_reg_w(RSP_REGS & rsp, UINT32 offset, UINT32 data, UINT32 dummy)
+void n64_sp_reg_w(UINT32 offset, UINT32 data, UINT32 dummy)
+{
+ UINT32 InterruptPending=0;
+ if ((offset & 0x10000) == 0)
+ {
+ switch (offset & 0xffff)
+ {
+ case 0x00/4: // SP_MEM_ADDR_REG
+ sp_mem_addr = data;
+ break;
+
+ case 0x04/4: // SP_DRAM_ADDR_REG
+ sp_dram_addr = data & 0xffffff;
+ break;
+
+ case 0x08/4: // SP_RD_LEN_REG
+ // sp_dma_length = data & 0xfff;
+ // sp_dma_count = (data >> 12) & 0xff;
+ // sp_dma_skip = (data >> 20) & 0xfff;
+ sp_dma_length=data;
+ sp_dma(SP_DMA_RDRAM_TO_IDMEM);
+ break;
+
+ case 0x0c/4: // SP_WR_LEN_REG
+ // sp_dma_length = data & 0xfff;
+ // sp_dma_count = (data >> 12) & 0xff;
+ // sp_dma_skip = (data >> 20) & 0xfff;
+ sp_dma_length=data;
+ sp_dma(SP_DMA_IDMEM_TO_RDRAM);
+ break;
+
+ case 0x10/4: // SP_STATUS_REG
+ {
+ if((data&0x1)&&(data&0x2))
+ log(M64MSG_ERROR, "Clear halt and set halt simultaneously\n");
+ if((data&0x8)&&(data&0x10))
+ log(M64MSG_ERROR, "Clear int and set int simultaneously\n");
+ if((data&0x20)&&(data&0x40))
+ log(M64MSG_ERROR, "Clear sstep and set sstep simultaneously\n");
+ if (data & 0x00000001) // clear halt
+ {
+ rsp_sp_status &= ~SP_STATUS_HALT;
+
+ // if (first_rsp)
+ // {
+ // cpu_spinuntil_trigger(6789);
+
+ // cpunum_set_input_line(1, INPUT_LINE_HALT, CLEAR_LINE);
+ // rsp_sp_status &= ~SP_STATUS_HALT;
+ // }
+ // else
+ // {
+ // first_rsp = 1;
+ // }
+ }
+ if (data & 0x00000002) // set halt
+ {
+ // cpunum_set_input_line(1, INPUT_LINE_HALT, ASSERT_LINE);
+ rsp_sp_status |= SP_STATUS_HALT;
+ }
+ if (data & 0x00000004) rsp_sp_status &= ~SP_STATUS_BROKE; // clear broke
+ if (data & 0x00000008) // clear interrupt
+ {
+ *z64_rspinfo.MI_INTR_REG &= ~R4300i_SP_Intr;
+ ///TEMPORARY COMMENTED FOR SPEED
+ /// printf("sp_reg_w clear interrupt");
+ //clear_rcp_interrupt(SP_INTERRUPT);
+ }
+ if (data & 0x00000010) // set interrupt
+ {
+ //signal_rcp_interrupt(SP_INTERRUPT);
+ }
+ if (data & 0x00000020) rsp_sp_status &= ~SP_STATUS_SSTEP; // clear single step
+ if (data & 0x00000040) {
+ rsp_sp_status |= SP_STATUS_SSTEP; // set single step
+ log(M64MSG_STATUS, "RSP STATUS REG: SSTEP set\n");
+ }
+ if (data & 0x00000080) rsp_sp_status &= ~SP_STATUS_INTR_BREAK; // clear interrupt on break
+ if (data & 0x00000100) rsp_sp_status |= SP_STATUS_INTR_BREAK; // set interrupt on break
+ if (data & 0x00000200) rsp_sp_status &= ~SP_STATUS_SIGNAL0; // clear signal 0
+ if (data & 0x00000400) rsp_sp_status |= SP_STATUS_SIGNAL0; // set signal 0
+ if (data & 0x00000800) rsp_sp_status &= ~SP_STATUS_SIGNAL1; // clear signal 1
+ if (data & 0x00001000) rsp_sp_status |= SP_STATUS_SIGNAL1; // set signal 1
+ if (data & 0x00002000) rsp_sp_status &= ~SP_STATUS_SIGNAL2; // clear signal 2
+ if (data & 0x00004000) rsp_sp_status |= SP_STATUS_SIGNAL2; // set signal 2
+ if (data & 0x00008000) rsp_sp_status &= ~SP_STATUS_SIGNAL3; // clear signal 3
+ if (data & 0x00010000) rsp_sp_status |= SP_STATUS_SIGNAL3; // set signal 3
+ if (data & 0x00020000) rsp_sp_status &= ~SP_STATUS_SIGNAL4; // clear signal 4
+ if (data & 0x00040000) rsp_sp_status |= SP_STATUS_SIGNAL4; // set signal 4
+ if (data & 0x00080000) rsp_sp_status &= ~SP_STATUS_SIGNAL5; // clear signal 5
+ if (data & 0x00100000) rsp_sp_status |= SP_STATUS_SIGNAL5; // set signal 5
+ if (data & 0x00200000) rsp_sp_status &= ~SP_STATUS_SIGNAL6; // clear signal 6
+ if (data & 0x00400000) rsp_sp_status |= SP_STATUS_SIGNAL6; // set signal 6
+ if (data & 0x00800000) rsp_sp_status &= ~SP_STATUS_SIGNAL7; // clear signal 7
+ if (data & 0x01000000) rsp_sp_status |= SP_STATUS_SIGNAL7; // set signal 7
+
+ if(InterruptPending==1)
+ {
+ *z64_rspinfo.MI_INTR_REG |= 1;
+ z64_rspinfo.CheckInterrupts();
+ InterruptPending=0;
+ }
+ break;
+ }
+
+ case 0x1c/4: // SP_SEMAPHORE_REG
+ sp_semaphore = data;
+ // mame_printf_debug("sp_semaphore = %08X\n", sp_semaphore);
+ break;
+
+ default:
+ log(M64MSG_WARNING, "sp_reg_w: %08X, %08X\n", data, offset);
+ break;
+ }
+ }
+ else
+ {
+ switch (offset & 0xffff)
+ {
+ case 0x00/4: // SP_PC_REG
+ //cpunum_set_info_int(1, CPUINFO_INT_PC, 0x04001000 | (data & 0xfff));
+ //break;
+
+ default:
+ log(M64MSG_WARNING, "sp_reg_w: %08X, %08X\n", data, offset);
+ break;
+ }
+ }
+}
+
+UINT32 sp_read_reg(UINT32 reg)
+{
+ switch (reg)
+ {
+ //case 4: return rsp_sp_status;
+ default: return n64_sp_reg_r(reg, 0x00000000);
+ }
+}
+
+
+void sp_write_reg(UINT32 reg, UINT32 data)
+{
+ switch (reg)
+ {
+ default: n64_sp_reg_w(reg, data, 0x00000000); break;
+ }
+}
notaz.gp2x.de / mupen64plus-pandora.git / blobdiff