diff options
Diffstat (limited to 'src/devices/cpu/mips/mips1dsm.cpp')
-rw-r--r-- | src/devices/cpu/mips/mips1dsm.cpp | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/src/devices/cpu/mips/mips1dsm.cpp b/src/devices/cpu/mips/mips1dsm.cpp new file mode 100644 index 00000000000..cbaee8b969b --- /dev/null +++ b/src/devices/cpu/mips/mips1dsm.cpp @@ -0,0 +1,382 @@ +// license:BSD-3-Clause +// copyright-holders:Aaron Giles +/*************************************************************************** + + r3kdasm.c + Disassembler for the portable R3000 emulator. + Written by Aaron Giles + +***************************************************************************/ + +#include "emu.h" +#include "mips1dsm.h" + +const char *const mips1_disassembler::reg[32] = +{ + "0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" +}; + + +const char *const mips1_disassembler::cpreg[4][32] = +{ + { + "Index","Random","EntryLo","cpr3", "Context", "cpr5", "cpr6", "cpr7", + "BadVAddr", "cpr9", "EntryHi","cpr11","SR","Cause","EPC","PRId", + "cpr16","cpr17","cpr18","cpr19","cpr20","cpr21","cpr22","cpr23", + "cpr24","cpr25","cpr26","cpr27","cpr28","cpr29","cpr30","cpr31" + }, + { + "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", + "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", + "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", + "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31" + }, + { + "cpr0", "cpr1", "cpr2", "cpr3", "cpr4", "cpr5", "cpr6", "cpr7", + "cpr8", "cpr9", "cpr10","cpr11","cpr12","cpr13","cpr14","cpr15", + "cpr16","cpr17","cpr18","cpr19","cpr20","cpr21","cpr22","cpr23", + "cpr24","cpr25","cpr26","cpr27","cpr28","cpr29","cpr30","cpr31" + }, + { + "cpr0", "cpr1", "cpr2", "cpr3", "cpr4", "cpr5", "cpr6", "cpr7", + "cpr8", "cpr9", "cpr10","cpr11","cpr12","cpr13","cpr14","cpr15", + "cpr16","cpr17","cpr18","cpr19","cpr20","cpr21","cpr22","cpr23", + "cpr24","cpr25","cpr26","cpr27","cpr28","cpr29","cpr30","cpr31" + } +}; + + +const char *const mips1_disassembler::ccreg[4][32] = +{ + { + "ccr0", "ccr1", "ccr2", "ccr3", "ccr4", "ccr5", "ccr6", "ccr7", + "ccr8", "ccr9", "ccr10","ccr11","ccr12","ccr13","ccr14","ccr15", + "ccr16","ccr17","ccr18","ccr19","ccr20","ccr21","ccr22","ccr23", + "ccr24","ccr25","ccr26","ccr27","ccr28","ccr29","ccr30","ccr31" + }, + { + "ccr0", "ccr1", "ccr2", "ccr3", "ccr4", "ccr5", "ccr6", "ccr7", + "ccr8", "ccr9", "ccr10","ccr11","ccr12","ccr13","ccr14","ccr15", + "ccr16","ccr17","ccr18","ccr19","ccr20","ccr21","ccr22","ccr23", + "ccr24","ccr25","ccr26","ccr27","ccr28","ccr29","ccr30","ccr31" + }, + { + "ccr0", "ccr1", "ccr2", "ccr3", "ccr4", "ccr5", "ccr6", "ccr7", + "ccr8", "ccr9", "ccr10","ccr11","ccr12","ccr13","ccr14","ccr15", + "ccr16","ccr17","ccr18","ccr19","ccr20","ccr21","ccr22","ccr23", + "ccr24","ccr25","ccr26","ccr27","ccr28","ccr29","ccr30","ccr31" + }, + { + "ccr0", "ccr1", "ccr2", "ccr3", "ccr4", "ccr5", "ccr6", "ccr7", + "ccr8", "ccr9", "ccr10","ccr11","ccr12","ccr13","ccr14","ccr15", + "ccr16","ccr17","ccr18","ccr19","ccr20","ccr21","ccr22","ccr23", + "ccr24","ccr25","ccr26","ccr27","ccr28","ccr29","ccr30","ccr31" + } +}; + + +/*************************************************************************** + CODE CODE +***************************************************************************/ + +std::string mips1_disassembler::signed_16bit(int16_t val) +{ + if (val < 0) + return util::string_format("-$%x", -val); + else + return util::string_format("$%x", val); +} + +uint32_t mips1_disassembler::dasm_cop(uint32_t pc, int cop, uint32_t op, std::ostream &stream) +{ + int rt = (op >> 16) & 31; + int rd = (op >> 11) & 31; + uint32_t flags = 0; + + switch ((op >> 21) & 31) + { + case 0x00: util::stream_format(stream, "mfc%d %s,%s", cop, reg[rt], cpreg[cop][rd]); break; + case 0x02: util::stream_format(stream, "cfc%d %s,%s", cop, reg[rt], ccreg[cop][rd]); break; + case 0x04: util::stream_format(stream, "mtc%d %s,%s", cop, reg[rt], cpreg[cop][rd]); break; + case 0x06: util::stream_format(stream, "ctc%d %s,%s", cop, reg[rt], ccreg[cop][rd]); break; + case 0x08: /* BC */ + switch (rt) + { + case 0x00: util::stream_format(stream, "bc%df $%08x", cop, pc + 4 + ((int16_t)op << 2)); break; + case 0x01: util::stream_format(stream, "bc%dt $%08x", cop, pc + 4 + ((int16_t)op << 2)); break; + case 0x02: util::stream_format(stream, "bc%dfl [invalid]", cop); break; + case 0x03: util::stream_format(stream, "bc%dtl [invalid]", cop); break; + default: util::stream_format(stream, "dc.l $%08x [invalid]", op); break; + } + 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: /* COP */ + if (cop == 0) + { + switch (op & 0x01ffffff) + { + case 0x01: util::stream_format(stream, "tlbr"); break; + case 0x02: util::stream_format(stream, "tlbwi"); break; + case 0x06: util::stream_format(stream, "tlbwr"); break; + case 0x08: util::stream_format(stream, "tlbp"); break; + case 0x10: util::stream_format(stream, "rfe"); break; + case 0x18: util::stream_format(stream, "eret [invalid]"); break; + default: util::stream_format(stream, "cop%d $%07x", cop, op & 0x01ffffff); break; + } + } + else + util::stream_format(stream, "cop%d $%07x", cop, op & 0x01ffffff); + break; + default: util::stream_format(stream, "dc.l $%08x [invalid]", op); break; + } + + return flags; +} + +uint32_t mips1_disassembler::dasm_cop1(uint32_t pc, uint32_t op, std::ostream &stream) +{ + static const char *const format_table[] = + { + "?","?","?","?","?","?","?","?","?","?","?","?","?","?","?","?", + "s","d","?","?","w","l","?","?","?","?","?","?","?","?","?","?" + }; + const char *fmt = format_table[(op >> 21) & 31]; + int ft = (op >> 16) & 31; + int fs = (op >> 11) & 31; + int fd = (op >> 6) & 31; + int rt = (op >> 16) & 31; + int rd = (op >> 11) & 31; + uint32_t flags = 0; + + switch ((op >> 21) & 31) + { + case 0x00: util::stream_format(stream, "mfc1 %s,%s", reg[rt], cpreg[1][rd]); break; + case 0x01: util::stream_format(stream, "dmfc1 %s,%s", reg[rt], cpreg[1][rd]); break; + case 0x02: util::stream_format(stream, "cfc1 %s,%s", reg[rt], ccreg[1][rd]); break; + case 0x04: util::stream_format(stream, "mtc1 %s,%s", reg[rt], cpreg[1][rd]); break; + case 0x05: util::stream_format(stream, "dmtc1 %s,%s", reg[rt], cpreg[1][rd]); break; + case 0x06: util::stream_format(stream, "ctc1 %s,%s", reg[rt], ccreg[1][rd]); break; + case 0x08: /* BC */ + switch (rt & 3) + { + case 0x00: util::stream_format(stream, "bc1f $%08x,%d", pc + 4 + ((int16_t)op << 2), (op >> 18) & 7); break; + case 0x01: util::stream_format(stream, "bc1t $%08x,%d", pc + 4 + ((int16_t)op << 2), (op >> 18) & 7); break; + case 0x02: util::stream_format(stream, "bc1fl $%08x,%d", pc + 4 + ((int16_t)op << 2), (op >> 18) & 7); flags = STEP_OVER | step_over_extra(1); break; + case 0x03: util::stream_format(stream, "bc1tl $%08x,%d", pc + 4 + ((int16_t)op << 2), (op >> 18) & 7); flags = STEP_OVER | step_over_extra(1); break; + } + break; + default: /* COP */ + switch (op & 0x3f) + { + case 0x00: util::stream_format(stream, "add.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], cpreg[1][ft]); break; + case 0x01: util::stream_format(stream, "sub.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], cpreg[1][ft]); break; + case 0x02: util::stream_format(stream, "mul.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], cpreg[1][ft]); break; + case 0x03: util::stream_format(stream, "div.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], cpreg[1][ft]); break; + case 0x04: util::stream_format(stream, "sqrt.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x05: util::stream_format(stream, "abs.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x06: util::stream_format(stream, "mov.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x07: util::stream_format(stream, "neg.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x08: util::stream_format(stream, "round.l.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x09: util::stream_format(stream, "trunc.l.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0a: util::stream_format(stream, "ceil.l.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0b: util::stream_format(stream, "floor.l.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0c: util::stream_format(stream, "round.w.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0d: util::stream_format(stream, "trunc.w.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0e: util::stream_format(stream, "ceil.w.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x0f: util::stream_format(stream, "floor.w.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x11: util::stream_format(stream, "mov%c.%s %s,%s,%d", ((op >> 16) & 1) ? 't' : 'f', fmt, cpreg[1][fd], cpreg[1][fs], (op >> 18) & 7); break; + case 0x12: util::stream_format(stream, "movz.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], reg[rt]); break; + case 0x13: util::stream_format(stream, "movn.%s %s,%s,%s", fmt, cpreg[1][fd], cpreg[1][fs], reg[rt]); break; + case 0x15: util::stream_format(stream, "recip.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x16: util::stream_format(stream, "rsqrt.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x20: util::stream_format(stream, "cvt.s.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x21: util::stream_format(stream, "cvt.d.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x24: util::stream_format(stream, "cvt.w.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x25: util::stream_format(stream, "cvt.l.%s %s,%s", fmt, cpreg[1][fd], cpreg[1][fs]); break; + case 0x30: util::stream_format(stream, "c.f.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x31: util::stream_format(stream, "c.un.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x32: util::stream_format(stream, "c.eq.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x33: util::stream_format(stream, "c.ueq.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x34: util::stream_format(stream, "c.olt.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x35: util::stream_format(stream, "c.ult.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x36: util::stream_format(stream, "c.ole.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x37: util::stream_format(stream, "c.ule.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x38: util::stream_format(stream, "c.sf.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x39: util::stream_format(stream, "c.ngle.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7);break; + case 0x3a: util::stream_format(stream, "c.seq.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x3b: util::stream_format(stream, "c.ngl.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x3c: util::stream_format(stream, "c.lt.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x3d: util::stream_format(stream, "c.nge.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x3e: util::stream_format(stream, "c.le.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + case 0x3f: util::stream_format(stream, "c.ngt.%s %s,%s,%d", fmt, cpreg[1][fs], cpreg[1][ft], (op >> 8) & 7); break; + default: util::stream_format(stream, "cop1 $%07x", op & 0x01ffffff); break; + } + break; + } + return flags; +} + +offs_t mips1_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) +{ + uint32_t op = opcodes.r32(pc); + int rs = (op >> 21) & 31; + int rt = (op >> 16) & 31; + int rd = (op >> 11) & 31; + int shift = (op >> 6) & 31; + uint32_t flags = 0; + + switch (op >> 26) + { + case 0x00: /* SPECIAL */ + switch (op & 63) + { + case 0x00: if (op == 0) + util::stream_format(stream, "nop"); + else + util::stream_format(stream, "sll %s,%s,%d", reg[rd], reg[rt], shift); + break; + case 0x02: util::stream_format(stream, "srl %s,%s,%d", reg[rd], reg[rt], shift); break; + case 0x03: util::stream_format(stream, "sra %s,%s,%d", reg[rd], reg[rt], shift); break; + case 0x04: util::stream_format(stream, "sllv %s,%s,%s", reg[rd], reg[rt], reg[rs]); break; + case 0x06: util::stream_format(stream, "srlv %s,%s,%s", reg[rd], reg[rt], reg[rs]); break; + case 0x07: util::stream_format(stream, "srav %s,%s,%s", reg[rd], reg[rt], reg[rs]); break; + case 0x08: util::stream_format(stream, "jr %s", reg[rs]); if (rs == 31) flags = STEP_OUT; break; + case 0x09: if (rd == 31) + util::stream_format(stream, "jalr %s", reg[rs]); + else + util::stream_format(stream, "jalr %s,%s", reg[rs], reg[rd]); + flags = STEP_OVER | step_over_extra(1); + break; + case 0x0c: util::stream_format(stream, "syscall"); flags = STEP_OVER; break; + case 0x0d: util::stream_format(stream, "break"); flags = STEP_OVER; break; + case 0x0f: util::stream_format(stream, "sync [invalid]"); break; + case 0x10: util::stream_format(stream, "mfhi %s", reg[rd]); break; + case 0x11: util::stream_format(stream, "mthi %s", reg[rs]); break; + case 0x12: util::stream_format(stream, "mflo %s", reg[rd]); break; + case 0x13: util::stream_format(stream, "mtlo %s", reg[rs]); break; + case 0x18: util::stream_format(stream, "mult %s,%s", reg[rs], reg[rt]); break; + case 0x19: util::stream_format(stream, "multu %s,%s", reg[rs], reg[rt]); break; + case 0x1a: util::stream_format(stream, "div %s,%s", reg[rs], reg[rt]); break; + case 0x1b: util::stream_format(stream, "divu %s,%s", reg[rs], reg[rt]); break; + case 0x20: util::stream_format(stream, "add %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x21: util::stream_format(stream, "addu %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x22: util::stream_format(stream, "sub %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x23: util::stream_format(stream, "subu %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x24: util::stream_format(stream, "and %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x25: util::stream_format(stream, "or %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x26: util::stream_format(stream, "xor %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x27: util::stream_format(stream, "nor %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x2a: util::stream_format(stream, "slt %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x2b: util::stream_format(stream, "sltu %s,%s,%s", reg[rd], reg[rs], reg[rt]); break; + case 0x30: util::stream_format(stream, "teq [invalid]"); break; + case 0x31: util::stream_format(stream, "tgeu [invalid]"); break; + case 0x32: util::stream_format(stream, "tlt [invalid]"); break; + case 0x33: util::stream_format(stream, "tltu [invalid]"); break; + case 0x34: util::stream_format(stream, "tge [invalid]"); break; + case 0x36: util::stream_format(stream, "tne [invalid]"); break; + default: util::stream_format(stream, "dc.l $%08x [invalid]", op); break; + } + break; + + case 0x01: /* REGIMM */ + switch ((op >> 16) & 31) + { + case 0x00: util::stream_format(stream, "bltz %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); break; + case 0x01: util::stream_format(stream, "bgez %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); break; + case 0x02: util::stream_format(stream, "bltzl [invalid]"); break; + case 0x03: util::stream_format(stream, "bgezl [invalid]"); break; + case 0x08: util::stream_format(stream, "tgei [invalid]"); break; + case 0x09: util::stream_format(stream, "tgeiu [invalid]"); break; + case 0x0a: util::stream_format(stream, "tlti [invalid]"); break; + case 0x0b: util::stream_format(stream, "tltiu [invalid]"); break; + case 0x0c: util::stream_format(stream, "teqi [invalid]"); break; + case 0x0e: util::stream_format(stream, "tnei [invalid]"); break; + case 0x10: util::stream_format(stream, "bltzal %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); flags = STEP_OVER | step_over_extra(1); break; + case 0x11: util::stream_format(stream, "bgezal %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); flags = STEP_OVER | step_over_extra(1); break; + case 0x12: util::stream_format(stream, "bltzall [invalid]"); break; + case 0x13: util::stream_format(stream, "bgezall [invalid]"); break; + default: util::stream_format(stream, "dc.l $%08x [invalid]", op); break; + } + break; + + case 0x02: util::stream_format(stream, "j $%08x", (pc & 0xf0000000) | ((op & 0x0fffffff) << 2)); break; + case 0x03: util::stream_format(stream, "jal $%08x", (pc & 0xf0000000) | ((op & 0x0fffffff) << 2)); flags = STEP_OVER | step_over_extra(1); break; + case 0x04: if (rs == 0 && rt == 0) + util::stream_format(stream, "b $%08x", pc + 4 + ((int16_t)op << 2)); + else + util::stream_format(stream, "beq %s,%s,$%08x", reg[rs], reg[rt], pc + 4 + ((int16_t)op << 2)); + break; + case 0x05: util::stream_format(stream, "bne %s,%s,$%08x", reg[rs], reg[rt], pc + 4 + ((int16_t)op << 2));break; + case 0x06: util::stream_format(stream, "blez %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); break; + case 0x07: util::stream_format(stream, "bgtz %s,$%08x", reg[rs], pc + 4 + ((int16_t)op << 2)); break; + case 0x08: util::stream_format(stream, "addi %s,%s,%s", reg[rt], reg[rs], signed_16bit(op)); break; + case 0x09: util::stream_format(stream, "addiu %s,%s,%s", reg[rt], reg[rs], signed_16bit(op)); break; + case 0x0a: util::stream_format(stream, "slti %s,%s,%s", reg[rt], reg[rs], signed_16bit(op)); break; + case 0x0b: util::stream_format(stream, "sltiu %s,%s,%s", reg[rt], reg[rs], signed_16bit(op)); break; + case 0x0c: util::stream_format(stream, "andi %s,%s,$%04x", reg[rt], reg[rs], (uint16_t)op); break; + case 0x0d: util::stream_format(stream, "ori %s,%s,$%04x", reg[rt], reg[rs], (uint16_t)op); break; + case 0x0e: util::stream_format(stream, "xori %s,%s,$%04x", reg[rt], reg[rs], (uint16_t)op); break; + case 0x0f: util::stream_format(stream, "lui %s,$%04x", reg[rt], (uint16_t)op); break; + case 0x10: flags = dasm_cop(pc, 0, op, stream); break; + case 0x11: flags = dasm_cop1(pc, op, stream); break; + case 0x12: flags = dasm_cop(pc, 2, op, stream); break; + case 0x13: flags = dasm_cop(pc, 3, op, stream); break; + case 0x14: util::stream_format(stream, "beql [invalid]"); break; + case 0x15: util::stream_format(stream, "bnel [invalid]"); break; + case 0x16: util::stream_format(stream, "blezl [invalid]"); break; + case 0x17: util::stream_format(stream, "bgtzl [invalid]"); break; + case 0x20: util::stream_format(stream, "lb %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x21: util::stream_format(stream, "lh %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x22: util::stream_format(stream, "lwl %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x23: util::stream_format(stream, "lw %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x24: util::stream_format(stream, "lbu %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x25: util::stream_format(stream, "lhu %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x26: util::stream_format(stream, "lwr %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x28: util::stream_format(stream, "sb %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x29: util::stream_format(stream, "sh %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x2a: util::stream_format(stream, "swl %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x2b: util::stream_format(stream, "sw %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x2e: util::stream_format(stream, "swr %s,%s(%s)", reg[rt], signed_16bit(op), reg[rs]); break; + case 0x2f: util::stream_format(stream, "cache [invalid]"); break; + case 0x30: util::stream_format(stream, "ll [invalid]"); break; + case 0x31: util::stream_format(stream, "lwc1 %s,%s(%s)", cpreg[1][rt], signed_16bit(op), reg[rs]); break; + case 0x32: util::stream_format(stream, "lwc2 %s,%s(%s)", cpreg[2][rt], signed_16bit(op), reg[rs]); break; + case 0x33: util::stream_format(stream, "lwc3 %s,%s(%s)", cpreg[3][rt], signed_16bit(op), reg[rs]); break; + case 0x34: util::stream_format(stream, "ldc0 [invalid]"); break; + case 0x35: util::stream_format(stream, "ldc1 [invalid]"); break; + case 0x36: util::stream_format(stream, "ldc2 [invalid]"); break; + case 0x37: util::stream_format(stream, "ldc3 [invalid]"); break; + case 0x38: util::stream_format(stream, "sc [invalid]"); break; + case 0x39: util::stream_format(stream, "swc1 %s,%s(%s)", cpreg[1][rt], signed_16bit(op), reg[rs]); break; + case 0x3a: util::stream_format(stream, "swc2 %s,%s(%s)", cpreg[2][rt], signed_16bit(op), reg[rs]); break; + case 0x3b: util::stream_format(stream, "swc3 %s,%s(%s)", cpreg[3][rt], signed_16bit(op), reg[rs]); break; + case 0x3c: util::stream_format(stream, "sdc0 [invalid]"); break; + case 0x3d: util::stream_format(stream, "sdc1 [invalid]"); break; + case 0x3e: util::stream_format(stream, "sdc2 [invalid]"); break; + case 0x3f: util::stream_format(stream, "sdc3 [invalid]"); break; + default: util::stream_format(stream, "dc.l $%08x [invalid]", op); break; + } + return 4 | flags | SUPPORTED; +} + +uint32_t mips1_disassembler::opcode_alignment() const +{ + return 4; +} |