// license:GPL-2.0+ // copyright-holders:Segher Boessenkool, David Haywood /***************************************************************************** SunPlus ยต'nSP disassembler Copyright 2008-2017 Segher Boessenkool Licensed under the terms of the GNU GPL, version 2 http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt *****************************************************************************/ #include "emu.h" #include "unspdasm.h" char const* const unsp_disassembler::jumps[] = { "jb", "jae", "jge", "jl", "jne", "je", "jpl", "jmi", "jbe", "ja", "jle", "jg", "jvc", "jvs", "jmp", "" }; offs_t unsp_disassembler::disassemble_jumps(std::ostream &stream, offs_t pc, const uint16_t op) { uint32_t len = 1; const uint16_t op0 = (op >> 12) & 15; const uint16_t op1 = (op >> 6) & 7; const uint32_t opimm = op & 0x3f; if (op1 == 0) { util::stream_format(stream, "%s %04x", jumps[op0], pc + 1 + opimm); return UNSP_DASM_OK; } else if (op1 == 1) { util::stream_format(stream, "%s %04x", jumps[op0], pc + 1 - opimm); return UNSP_DASM_OK; } return UNSP_DASM_OK; }