diff options
Diffstat (limited to 'disasm.cpp')
| -rw-r--r-- | disasm.cpp | 22 |
1 files changed, 19 insertions, 3 deletions
@@ -1681,10 +1681,26 @@ static void disasm_add_sub_cmp( } static void disasm_cmpm( - DisasmNode &node, const uint16_t instr, const DataBuffer &code, const Settings &s) + DisasmNode &node, const uint16_t instr, const DataBuffer &, const Settings &) { - // TODO Implement - return disasm_verbatim(node, instr, code, s); + const OpSize opsize = static_cast<OpSize>((instr >> 6) & 3); + // Must be already handled by parent call + assert(opsize != OpSize::kInvalid); + const int m = (instr >> 3) & 3; + assert(m == 1); + (void) m; + const int xn = instr & 7; + const int xi = (instr >> 9) & 7; + const auto src = AddrModeArg::AnAddrIncr(xn); + const auto dst = AddrModeArg::AnAddrIncr(xi); + char src_str[32]{}; + char dst_str[32]{}; + src.SNPrint(src_str, sizeof(src_str)); + dst.SNPrint(dst_str, sizeof(dst_str)); + const char suffix = suffix_from_opsize(opsize); + snprintf(node.mnemonic, kMnemonicBufferSize, "cmpm%c", suffix); + snprintf(node.arguments, kArgsBufferSize, "%s,%s", src_str, dst_str); + node.size = kInstructionSizeStepBytes + src.Size() + dst.Size(); } static void disasm_eor( |