// license:BSD-3-Clause // copyright-holders:R. Belmont #include "emu.h" #include "debugger.h" #include "sh4.h" #define SIGNX8(x) (((int32_t)(x) << 24) >> 24) #define SIGNX12(x) (((int32_t)(x) << 20) >> 20) #define Rn ((opcode >> 8) & 15) #define Rm ((opcode >> 4) & 15) static const char *const regname[16] = { "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "R8", "R9", "R10","R11","R12","R13","R14","R15" }; static uint32_t op0000(std::ostream &stream, uint32_t pc, uint16_t opcode) { uint32_t flags = 0; switch (opcode & 0xF) { case 0x0: case 0x1: util::stream_format(stream, "?????? $%04X", opcode); break; case 0x2: if (opcode & 0x80) { util::stream_format(stream, "STC %s_BANK,%s", regname[(Rm) & 7], regname[Rn]); return flags; } switch (opcode & 0x70) { case 0x00: util::stream_format(stream, "STC SR,%s", regname[Rn]); break; case 0x10: util::stream_format(stream, "STC GBR,%s", regname[Rn]); break; case 0x20: util::stream_format(stream, "STC VBR,%s", regname[Rn]); break; case 0x30: util::stream_format(stream, "STC SSR,%s", regname[Rn]); break; case 0x40: util::stream_format(stream, "STC SPC,%s", regname[Rn]); break; } break; case 0x3: switch (opcode & 0xF0) { case 0x00: util::stream_format(stream, "BSRF %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "BRAF %s", regname[Rn]); break; case 0x80: util::stream_format(stream, "PREF @%s", regname[Rn]); break; case 0x90: util::stream_format(stream, "OCBI @%s", regname[Rn]); break; case 0xA0: util::stream_format(stream, "OCBP @%s", regname[Rn]); break; case 0xB0: util::stream_format(stream, "OCBWB @%s", regname[Rn]); break; case 0xC0: util::stream_format(stream, "MOVCA.L R0,@%s", regname[Rn]); break; } break; case 0x4: util::stream_format(stream, "MOV.B %s,@(R0,%s)", regname[Rm], regname[Rn]); break; case 0x5: util::stream_format(stream, "MOV.W %s,@(R0,%s)", regname[Rm], regname[Rn]); break; case 0x6: util::stream_format(stream, "MOV.L %s,@(R0,%s)", regname[Rm], regname[Rn]); break; case 0x7: util::stream_format(stream, "MUL.L %s,%s", regname[Rm], regname[Rn]); break; case 0x8: switch (opcode & 0x70) { case 0x00: stream << "CLRT"; break; case 0x10: stream << "SETT"; break; case 0x20: stream << "CLRMAC"; break; case 0x30: stream << "LDTLB"; break; case 0x40: stream << "CLRS"; break; case 0x50: stream << "SETS"; break; } break; case 0x9: switch (opcode & 0x30) { case 0x00: stream << "NOP"; break; case 0x10: stream << "DIV0U"; break; case 0x20: util::stream_format(stream, "MOVT %s", regname[Rn]); break; } break; case 0xA: switch (opcode & 0x70) { case 0x00: util::stream_format(stream, "STS MACH,%s", regname[Rn]); break; case 0x10: util::stream_format(stream, "STS MACL,%s", regname[Rn]); break; case 0x20: util::stream_format(stream, "STS PR,%s", regname[Rn]); break; case 0x30: util::stream_format(stream, "STC SGR,%s", regname[Rn]); break; case 0x50: util::stream_format(stream, "STS FPUL,%s", regname[Rn]); break; case 0x60: util::stream_format(stream, "STS FPSCR,%s", regname[Rn]); break; case 0x70: util::stream_format(stream, "STC DBR,%s", regname[Rn]); break; } break; case 0xB: switch (opcode & 0x30) { case 0x00: stream << "RTS"; flags = DASMFLAG_STEP_OUT; break; case 0x10: stream << "SLEEP"; break; case 0x20: stream << "RTE"; flags = DASMFLAG_STEP_OUT; break; } break; case 0xC: util::stream_format(stream, "MOV.B @(R0,%s),%s", regname[Rm], regname[Rn]); break; case 0xD: util::stream_format(stream, "MOV.W @(R0,%s),%s", regname[Rm], regname[Rn]); break; case 0xE: util::stream_format(stream, "MOV.L @(R0,%s),%s", regname[Rm], regname[Rn]); break; case 0xF: util::stream_format(stream, "MAC.L @%s+,@%s+", regname[Rn], regname[Rm]); break; } return flags; } static uint32_t op0001(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "MOV.L %s,@($%02X,%s)", regname[Rm], (opcode & 15) * 4, regname[Rn]); return 0; } static uint32_t op0010(std::ostream &stream, uint32_t pc, uint16_t opcode) { switch (opcode & 15) { case 0: util::stream_format(stream, "MOV.B %s,@%s", regname[Rm], regname[Rn]); break; case 1: util::stream_format(stream, "MOV.W %s,@%s", regname[Rm], regname[Rn]); break; case 2: util::stream_format(stream, "MOV.L %s,@%s", regname[Rm], regname[Rn]); break; case 3: util::stream_format(stream, "?????? $%04X", opcode); break; case 4: util::stream_format(stream, "MOV.B %s,@-%s", regname[Rm], regname[Rn]); break; case 5: util::stream_format(stream, "MOV.W %s,@-%s", regname[Rm], regname[Rn]); break; case 6: util::stream_format(stream, "MOV.L %s,@-%s", regname[Rm], regname[Rn]); break; case 7: util::stream_format(stream, "DIV0S %s,%s", regname[Rm], regname[Rn]); break; case 8: util::stream_format(stream, "TST %s,%s", regname[Rm], regname[Rn]); break; case 9: util::stream_format(stream, "AND %s,%s", regname[Rm], regname[Rn]); break; case 10: util::stream_format(stream, "XOR %s,%s", regname[Rm], regname[Rn]); break; case 11: util::stream_format(stream, "OR %s,%s", regname[Rm], regname[Rn]); break; case 12: util::stream_format(stream, "CMP/STR %s,%s", regname[Rm], regname[Rn]); break; case 13: util::stream_format(stream, "XTRCT %s,%s", regname[Rm], regname[Rn]); break; case 14: util::stream_format(stream, "MULU.W %s,%s", regname[Rm], regname[Rn]); break; case 15: util::stream_format(stream, "MULS.W %s,%s", regname[Rm], regname[Rn]); break; } return 0; } static uint32_t op0011(std::ostream &stream, uint32_t pc, uint16_t opcode) { switch (opcode & 15) { case 0: util::stream_format(stream, "CMP/EQ %s,%s", regname[Rm], regname[Rn]); break; case 1: util::stream_format(stream, "?????? %s,%s", regname[Rm], regname[Rn]); break; case 2: util::stream_format(stream, "CMP/HS %s,%s", regname[Rm], regname[Rn]); break; case 3: util::stream_format(stream, "CMP/GE %s,%s", regname[Rm], regname[Rn]); break; case 4: util::stream_format(stream, "DIV1 %s,%s", regname[Rm], regname[Rn]); break; case 5: util::stream_format(stream, "DMULU.L %s,%s", regname[Rm], regname[Rn]); break; case 6: util::stream_format(stream, "CMP/HI %s,%s", regname[Rm], regname[Rn]); break; case 7: util::stream_format(stream, "CMP/GT %s,%s", regname[Rm], regname[Rn]); break; case 8: util::stream_format(stream, "SUB %s,%s", regname[Rm], regname[Rn]); break; case 9: util::stream_format(stream, "?????? %s,%s", regname[Rm], regname[Rn]); break; case 10: util::stream_format(stream, "SUBC %s,%s", regname[Rm], regname[Rn]); break; case 11: util::stream_format(stream, "SUBV %s,%s", regname[Rm], regname[Rn]); break; case 12: util::stream_format(stream, "ADD %s,%s", regname[Rm], regname[Rn]); break; case 13: util::stream_format(stream, "DMULS.L %s,%s", regname[Rm], regname[Rn]); break; case 14: util::stream_format(stream, "ADDC %s,%s", regname[Rm], regname[Rn]); break; case 15: util::stream_format(stream, "ADDV %s,%s", regname[Rm], regname[Rn]); break; } return 0; } static uint32_t op0100(std::ostream &stream, uint32_t pc, uint16_t opcode) { uint32_t flags = 0; switch (opcode & 0xF) { case 0x0: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "SHLL %s", regname[Rn]); break; case 0x10: util::stream_format(stream, "DT %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "SHAL %s", regname[Rn]); break; } break; case 0x1: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "SHLR %s", regname[Rn]); break; case 0x10: util::stream_format(stream, "CMP/PZ %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "SHAR %s", regname[Rn]); break; } break; case 0x2: switch (opcode & 0xF0) { case 0x00: util::stream_format(stream, "STS.L MACH,@-%s", regname[Rn]); break; case 0x10: util::stream_format(stream, "STS.L MACL,@-%s", regname[Rn]); break; case 0x20: util::stream_format(stream, "STS.L PR,@-%s", regname[Rn]); break; case 0x30: util::stream_format(stream, "STC.L SGR,@-%s", regname[Rn]); break; case 0x50: util::stream_format(stream, "STS.L FPUL,@-%s", regname[Rn]); break; case 0x60: util::stream_format(stream, "STS.L FPSCR,@-%s", regname[Rn]); break; case 0xF0: util::stream_format(stream, "STC.L DBR,@-%s", regname[Rn]); break; } break; case 0x3: if (opcode & 0x80) { util::stream_format(stream, "STC.L %s_BANK,@-%s", regname[(Rm) & 7],regname[Rn]); return flags; } switch (opcode & 0x70) { case 0x00: util::stream_format(stream, "STC.L SR,@-%s", regname[Rn]); break; case 0x10: util::stream_format(stream, "STC.L GBR,@-%s", regname[Rn]); break; case 0x20: util::stream_format(stream, "STC.L VBR,@-%s", regname[Rn]); break; case 0x30: util::stream_format(stream, "STC.L SSR,@-%s", regname[Rn]); break; case 0x40: util::stream_format(stream, "STC.L SPC,@-%s", regname[Rn]); break; } break; case 0x4: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "ROTL %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "ROTCL %s", regname[Rn]); break; } break; case 0x5: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "ROTR %s", regname[Rn]); break; case 0x10: util::stream_format(stream, "CMP/PL %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "ROTCR %s", regname[Rn]); break; } break; case 0x6: switch (opcode & 0xF0) { case 0x00: util::stream_format(stream, "LDS.L @%s+,MACH", regname[Rn]); break; case 0x10: util::stream_format(stream, "LDS.L @%s+,MACL", regname[Rn]); break; case 0x20: util::stream_format(stream, "LDS.L @%s+,PR", regname[Rn]); break; case 0x50: util::stream_format(stream, "LDS.L @%s+,FPUL", regname[Rn]); break; case 0x60: util::stream_format(stream, "LDS.L @%s+,FPSCR", regname[Rn]); break; case 0xF0: util::stream_format(stream, "LDC.L @%s+,DBR", regname[Rn]); break; } break; case 0x7: if (opcode & 0x80) { util::stream_format(stream, "LDC.L @%s+,%s_BANK", regname[Rn],regname[(Rm) & 7]); return flags; } switch (opcode & 0x70) { case 0x00: util::stream_format(stream, "LDC.L @%s+,SR", regname[Rn]); break; case 0x10: util::stream_format(stream, "LDC.L @%s+,GBR", regname[Rn]); break; case 0x20: util::stream_format(stream, "LDC.L @%s+,VBR", regname[Rn]); break; case 0x30: util::stream_format(stream, "LDC.L @%s+,SSR", regname[Rn]); break; case 0x40: util::stream_format(stream, "LDC.L @%s+,SPC", regname[Rn]); break; } break; case 0x8: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "SHLL2 %s", regname[Rn]); break; case 0x10: util::stream_format(stream, "SHLL8 %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "SHLL16 %s", regname[Rn]); break; } break; case 0x9: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "SHLR2 %s", regname[Rn]); break; case 0x10: util::stream_format(stream, "SHLR8 %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "SHLR16 %s", regname[Rn]); break; } break; case 0xA: switch (opcode & 0xF0) { case 0x00: util::stream_format(stream, "LDS %s,MACH", regname[Rn]); break; case 0x10: util::stream_format(stream, "LDS %s,MACL", regname[Rn]); break; case 0x20: util::stream_format(stream, "LDS %s,PR", regname[Rn]); break; case 0x50: util::stream_format(stream, "LDS %s,FPUL", regname[Rn]); break; case 0x60: util::stream_format(stream, "LDS %s,FPSCR", regname[Rn]); break; case 0xF0: util::stream_format(stream, "LDC %s,DBR", regname[Rn]); break; } break; case 0xB: switch (opcode & 0x30) { case 0x00: util::stream_format(stream, "JSR %s", regname[Rn]); flags = DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1); break; case 0x10: util::stream_format(stream, "TAS %s", regname[Rn]); break; case 0x20: util::stream_format(stream, "JMP %s", regname[Rn]); break; } break; case 0xC: util::stream_format(stream, "SHAD %s,%s", regname[Rm], regname[Rn]); break; case 0xD: util::stream_format(stream, "SHLD %s,%s", regname[Rm], regname[Rn]); break; case 0xE: if (opcode & 0x80) { util::stream_format(stream, "LDC %s,%s_BANK", regname[Rn],regname[(Rm) & 7]); return flags; } switch (opcode & 0x70) { case 0x00: util::stream_format(stream, "LDC %s,SR", regname[Rn]); break; case 0x10: util::stream_format(stream, "LDC %s,GBR", regname[Rn]); break; case 0x20: util::stream_format(stream, "LDC %s,VBR", regname[Rn]); break; case 0x30: util::stream_format(stream, "LDC %s,SSR", regname[Rn]); break; case 0x40: util::stream_format(stream, "LDC %s,SPC", regname[Rn]); break; } break; case 0xF: util::stream_format(stream, "MAC.W @%s+,@%s+", regname[Rm], regname[Rn]); break; } return flags; } static uint32_t op0101(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "MOV.L @($%02X,%s),%s", (opcode & 15) * 4, regname[Rm], regname[Rn]); return 0; } static uint32_t op0110(std::ostream &stream, uint32_t pc, uint16_t opcode) { switch(opcode & 0xF) { case 0x00: util::stream_format(stream, "MOV.B @%s,%s", regname[Rm], regname[Rn]); break; case 0x01: util::stream_format(stream, "MOV.W @%s,%s", regname[Rm], regname[Rn]); break; case 0x02: util::stream_format(stream, "MOV.L @%s,%s", regname[Rm], regname[Rn]); break; case 0x03: util::stream_format(stream, "MOV %s,%s", regname[Rm], regname[Rn]); break; case 0x04: util::stream_format(stream, "MOV.B @%s+,%s", regname[Rm], regname[Rn]); break; case 0x05: util::stream_format(stream, "MOV.W @%s+,%s", regname[Rm], regname[Rn]); break; case 0x06: util::stream_format(stream, "MOV.L @%s+,%s", regname[Rm], regname[Rn]); break; case 0x07: util::stream_format(stream, "NOT %s,%s", regname[Rm], regname[Rn]); break; case 0x08: util::stream_format(stream, "SWAP.B %s,%s", regname[Rm], regname[Rn]); break; case 0x09: util::stream_format(stream, "SWAP.W %s,%s", regname[Rm], regname[Rn]); break; case 0x0a: util::stream_format(stream, "NEGC %s,%s", regname[Rm], regname[Rn]); break; case 0x0b: util::stream_format(stream, "NEG %s,%s", regname[Rm], regname[Rn]); break; case 0x0c: util::stream_format(stream, "EXTU.B %s,%s", regname[Rm], regname[Rn]); break; case 0x0d: util::stream_format(stream, "EXTU.W %s,%s", regname[Rm], regname[Rn]); break; case 0x0e: util::stream_format(stream, "EXTS.B %s,%s", regname[Rm], regname[Rn]); break; case 0x0f: util::stream_format(stream, "EXTS.W %s,%s", regname[Rm], regname[Rn]); break; } return 0; } static uint32_t op0111(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "ADD #$%02X,%s", opcode & 0xff, regname[Rn]); return 0; } static uint32_t op1000(std::ostream &stream, uint32_t pc, uint16_t opcode) { switch((opcode >> 8) & 15) { case 0: util::stream_format(stream, "MOV.B R0,@($%02X,%s)", (opcode & 15), regname[Rm]); break; case 1: util::stream_format(stream, "MOV.W R0,@($%02X,%s)", (opcode & 15) * 2, regname[Rm]); break; case 4: util::stream_format(stream, "MOV.B @($%02X,%s),R0", (opcode & 15), regname[Rm]); break; case 5: util::stream_format(stream, "MOV.W @($%02X,%s),R0", (opcode & 15) * 2, regname[Rm]); break; case 8: util::stream_format(stream, "CMP/EQ #$%02X,R0", (opcode & 0xff)); break; case 9: util::stream_format(stream, "BT $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2); break; case 11: util::stream_format(stream, "BF $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2); break; case 13: util::stream_format(stream, "BTS $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2); break; case 15: util::stream_format(stream, "BFS $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2); break; default : util::stream_format(stream, "invalid $%04X", opcode); } return 0; } static uint32_t op1001(std::ostream &stream, uint32_t pc, uint16_t opcode) { uint32_t ea=(pc+((opcode & 0xff) * 2)+2); util::stream_format(stream, "MOV.W @($%04X,PC),%s [%08X]", (opcode & 0xff) * 2, regname[Rn], ea); return 0; } static uint32_t op1010(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "BRA $%08X", SIGNX12(opcode & 0xfff) * 2 + pc + 2); return 0; } static uint32_t op1011(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "BSR $%08X", SIGNX12(opcode & 0xfff) * 2 + pc + 2); return DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1); } static uint32_t op1100(std::ostream &stream, uint32_t pc, uint16_t opcode) { uint32_t flags = 0; switch((opcode >> 8) & 15) { case 0: util::stream_format(stream, "MOV.B R0,@($%02X,GBR)", opcode & 0xff); break; case 1: util::stream_format(stream, "MOV.W R0,@($%04X,GBR)", (opcode & 0xff) * 2); break; case 2: util::stream_format(stream, "MOV.L R0,@($%04X,GBR)", (opcode & 0xff) * 4); break; case 3: util::stream_format(stream, "TRAPA #$%02X", opcode & 0xff); flags = DASMFLAG_STEP_OVER; break; case 4: util::stream_format(stream, "MOV.B @($%02X,GBR),R0", opcode & 0xff); break; case 5: util::stream_format(stream, "MOV.W @($%04X,GBR),R0", (opcode & 0xff) * 2); break; case 6: util::stream_format(stream, "MOV.L @($%04X,GBR),R0", (opcode & 0xff) * 4); break; case 7: util::stream_format(stream, "MOVA @($%04X,PC),R0 [%08X]", (opcode & 0xff) * 4, ((pc + 2) & ~3) + (opcode & 0xff) * 4); break; case 8: util::stream_format(stream, "TST #$%02X,R0", opcode & 0xff); break; case 9: util::stream_format(stream, "AND #$%02X,R0", opcode & 0xff); break; case 10: util::stream_format(stream, "XOR #$%02X,R0", opcode & 0xff); break; case 11: util::stream_format(stream, "OR #$%02X,R0", opcode & 0xff); break; case 12: util::stream_format(stream, "TST.B #$%02X,@(R0,GBR)", opcode & 0xff); break; case 13: util::stream_format(stream, "AND.B #$%02X,@(R0,GBR)", opcode & 0xff); break; case 14: util::stream_format(stream, "XOR.B #$%02X,@(R0,GBR)", opcode & 0xff); break; case 15: util::stream_format(stream, "OR.B #$%02X,@(R0,GBR)", opcode & 0xff); break; } return flags; } static uint32_t op1101(std::ostream &stream, uint32_t pc, uint16_t opcode) { uint32_t ea=((pc + 2) & ~3) + (opcode & 0xff) * 4; util::stream_format(stream, "MOV.L @($%04X,PC),%s [%08X]", (opcode & 0xff) * 4, regname[Rn], ea); return 0; } static uint32_t op1110(std::ostream &stream, uint32_t pc, uint16_t opcode) { util::stream_format(stream, "MOV #$%02X,%s", (opcode & 0xff), regname[Rn]); return 0; } static uint32_t op1111(std::ostream &stream, uint32_t pc, uint16_t opcode) { switch (opcode & 0xf) { case 0: util::stream_format(stream, "FADD F%s, F%s", regname[Rm], regname[Rn]); break; case 1: util::stream_format(stream, "FSUB F%s, F%s", regname[Rm], regname[Rn]); break; case 2: util::stream_format(stream, "FMUL F%s, F%s", regname[Rm], regname[Rn]); break; case 3: util::stream_format(stream, "FDIV F%s, F%s", regname[Rm], regname[Rn]); break; case 4: util::stream_format(stream, "FCMP/EQ F%s, F%s", regname[Rm], regname[Rn]); break; case 5: util::stream_format(stream, "FCMP/GT F%s, F%s", regname[Rm], regname[Rn]); break; case 6: util::stream_format(stream, "FMOV.S @(R0,%s),F%s", regname[Rm], regname[Rn]); break; case 7: util::stream_format(stream, "FMOV.S F%s, @(R0,%s)", regname[Rm], regname[Rn]); break; case 8: util::stream_format(stream, "FMOV.S @%s, F%s", regname[Rm], regname[Rn]); break; case 9: util::stream_format(stream, "FMOV.S @%s+, F%s", regname[Rm], regname[Rn]); break; case 10: util::stream_format(stream, "FMOV.S F%s, @%s", regname[Rm], regname[Rn]); break; case 11: util::stream_format(stream, "FMOV.S F%s, @-%s", regname[Rm], regname[Rn]); break; case 12: util::stream_format(stream, "FMOV.S F%s, F%s", regname[Rm], regname[Rn]); break; case 13: switch (opcode & 0xF0) { case 0x00: util::stream_format(stream, "FSTS FPUL, F%s", regname[Rn]); break; case 0x10: util::stream_format(stream, "FLDS F%s, FPUL", regname[Rn]); break; case 0x20: util::stream_format(stream, "FLOAT FPUL, F%s", regname[Rn]); break; case 0x30: util::stream_format(stream, "FTRC F%s, FPUL", regname[Rn]); break; case 0x40: util::stream_format(stream, "FNEG F%s", regname[Rn]); break; case 0x50: util::stream_format(stream, "FABS F%s", regname[Rn]); break; case 0x60: util::stream_format(stream, "FSQRT F%s", regname[Rn]); break; case 0x70: util::stream_format(stream, "FSRRA F%s", regname[Rn]); break; case 0x80: util::stream_format(stream, "FLDI0 F%s", regname[Rn]); break; case 0x90: util::stream_format(stream, "FLDI1 F%s", regname[Rn]); break; case 0xA0: util::stream_format(stream, "FCNVSD FPUL, D%s", regname[Rn]); break; case 0xB0: util::stream_format(stream, "FCNVDS D%s, FPUL", regname[Rn]); break; case 0xE0: util::stream_format(stream, "FIPR FV%d, FV%d", (Rn & 3) << 2, Rn & 12); break; case 0xF0: if (opcode & 0x100) { if (opcode & 0x200) { switch (opcode & 0xC00) { case 0x000: stream << "FSCHG"; break; case 0x800: stream << "FRCHG"; break; default: util::stream_format(stream, "Funknown $%04X", opcode); break; } } else { util::stream_format(stream, "FTRV XMTRX, FV%d", Rn & 12); } } else { util::stream_format(stream, "FSCA FPUL, F%s", regname[Rn & 14]); } break; default: util::stream_format(stream, "Funknown $%04X", opcode); break; } break; case 14: util::stream_format(stream, "FMAC FR0, F%s,F%s", regname[Rm], regname[Rn]); break; default: util::stream_format(stream, "Funknown $%04X", opcode); break; } return 0; } unsigned DasmSH4(std::ostream &stream, unsigned pc, uint16_t opcode) { uint32_t flags; pc += 2; switch ((opcode >> 12) & 15) { case 0: flags = op0000(stream, pc, opcode); break; case 1: flags = op0001(stream, pc, opcode); break; case 2: flags = op0010(stream, pc, opcode); break; case 3: flags = op0011(stream, pc, opcode); break; case 4: flags = op0100(stream, pc, opcode); break; case 5: flags = op0101(stream, pc, opcode); break; case 6: flags = op0110(stream, pc, opcode); break; case 7: flags = op0111(stream, pc, opcode); break; case 8: flags = op1000(stream, pc, opcode); break; case 9: flags = op1001(stream, pc, opcode); break; case 10: flags = op1010(stream, pc, opcode); break; case 11: flags = op1011(stream, pc, opcode); break; case 12: flags = op1100(stream, pc, opcode); break; case 13: flags = op1101(stream, pc, opcode); break; case 14: flags = op1110(stream, pc, opcode); break; default: flags = op1111(stream, pc, opcode); break; } return 2 | flags | DASMFLAG_SUPPORTED; } CPU_DISASSEMBLE(sh4) { return DasmSH4(stream, pc, (oprom[1] << 8) | oprom[0]); } CPU_DISASSEMBLE(sh4be) { return DasmSH4(stream, pc, (oprom[0] << 8) | oprom[1]); }