diff options
Diffstat (limited to 'disasm.cpp')
| -rw-r--r-- | disasm.cpp | 163 |
1 files changed, 131 insertions, 32 deletions
@@ -14,27 +14,6 @@ static void disasm_verbatim( snprintf(node.arguments, kArgsBufferSize, "0x%04x", instr); } -static void disasm_mfff0_v4e70( - DisasmNode& node, uint16_t instr, const DataBuffer &code, const Settings &s) -{ - node.size = kInstructionSizeStepBytes; - if (instr == 0x4e70) { - snprintf(node.mnemonic, kMnemonicBufferSize, "reset"); - } else if (instr == 0x4e71) { - snprintf(node.mnemonic, kMnemonicBufferSize, "nop"); - } else if (instr == 0x4e73) { - snprintf(node.mnemonic, kMnemonicBufferSize, "rte"); - } else if (instr == 0x4e75) { - snprintf(node.mnemonic, kMnemonicBufferSize, "rts"); - } else if (instr == 0x4e76) { - snprintf(node.mnemonic, kMnemonicBufferSize, "trapv"); - } else if (instr == 0x4e77) { - snprintf(node.mnemonic, kMnemonicBufferSize, "rtr"); - } else { - disasm_verbatim(node, instr, code, s); - } -} - enum class JsrJmp { kJsr, kJmp, @@ -230,19 +209,139 @@ static void disasm_bra_bsr_bcc( return; } -static void m68k_disasm( - DisasmNode& node, uint16_t instr, const DataBuffer &code, const Settings &s) +static void chunk_mf000_v0000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v1000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v2000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v3000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) { - if ((instr & 0xfff0) == 0x4e70) { - return disasm_mfff0_v4e70(node, instr, code, s); - } else if ((instr & 0xffc0) == 0x4e80) { - return disasm_jsr(node, instr, code, s); - } else if ((instr & 0xffc0) == 0x4ec0) { - return disasm_jmp(node, instr, code, s); - } else if ((instr & 0xf000) == 0x6000) { - return disasm_bra_bsr_bcc(node, instr, code, s); + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v4000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + if (i == 0x4e70) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "reset"); + return; + } else if (i == 0x4e71) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "nop"); + return; + } else if (i == 0x4e73) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "rte"); + return; + } else if (i == 0x4e75) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "rts"); + return; + } else if (i == 0x4e76) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "trapv"); + return; + } else if (i == 0x4e77) { + n.size = kInstructionSizeStepBytes; + snprintf(n.mnemonic, kMnemonicBufferSize, "rtr"); + return; + } else if ((i & 0xffc0) == 0x4e80) { + return disasm_jsr(n, i, c, s); + } else if ((i & 0xffc0) == 0x4ec0) { + return disasm_jmp(n, i, c, s); } - return disasm_verbatim(node, instr, code, s); + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v5000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v6000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_bra_bsr_bcc(n, i, c, s); +} + +static void chunk_mf000_v7000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v8000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_v9000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_va000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_vb000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_vc000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_vd000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_ve000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void chunk_mf000_vf000(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + return disasm_verbatim(n, i, c, s); +} + +static void (*disasm_mf000[16])(DisasmNode&, uint16_t, const DataBuffer &, const Settings &s) = { + chunk_mf000_v0000, + chunk_mf000_v1000, + chunk_mf000_v2000, + chunk_mf000_v3000, + chunk_mf000_v4000, + chunk_mf000_v5000, + chunk_mf000_v6000, + chunk_mf000_v7000, + chunk_mf000_v8000, + chunk_mf000_v9000, + chunk_mf000_va000, + chunk_mf000_vb000, + chunk_mf000_vc000, + chunk_mf000_vd000, + chunk_mf000_ve000, + chunk_mf000_vf000, +}; + +static void m68k_disasm(DisasmNode& n, uint16_t i, const DataBuffer &c, const Settings &s) +{ + const size_t selector = (i & 0xf000) >> 12; + assert(selector < 16); + return (disasm_mf000[selector])(n, i, c, s); } void DisasmNode::Disasm(const DataBuffer &code, const Settings &s) |