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Diffstat (limited to 'src/devices/cpu/sh/sh_fe.cpp')
-rw-r--r-- | src/devices/cpu/sh/sh_fe.cpp | 772 |
1 files changed, 772 insertions, 0 deletions
diff --git a/src/devices/cpu/sh/sh_fe.cpp b/src/devices/cpu/sh/sh_fe.cpp new file mode 100644 index 00000000000..1abede64dc4 --- /dev/null +++ b/src/devices/cpu/sh/sh_fe.cpp @@ -0,0 +1,772 @@ +// license:BSD-3-Clause +// copyright-holders:David Haywood, R. Belmont +/*************************************************************************** + + sh_fe.c + + Front end for SH recompiler + +***************************************************************************/ + +#include "emu.h" +#include "sh2.h" +#include "sh2comn.h" +#include "cpu/drcfe.h" + + +/*************************************************************************** + INSTRUCTION PARSERS +***************************************************************************/ + +sh_frontend::sh_frontend(sh_common_execution *device, uint32_t window_start, uint32_t window_end, uint32_t max_sequence) + : drc_frontend(*device, window_start, window_end, max_sequence) + , m_sh(device) +{ +} + +/*------------------------------------------------- + describe_instruction - build a description + of a single instruction +-------------------------------------------------*/ + +inline uint16_t sh_frontend::read_word(opcode_desc &desc) +{ + return m_sh->m_direct->read_word(desc.physpc, SH2_CODE_XOR(0)); +} + +bool sh_frontend::describe(opcode_desc &desc, const opcode_desc *prev) +{ + uint16_t opcode; + + /* fetch the opcode */ + opcode = desc.opptr.w[0] = read_word(desc); + + /* all instructions are 2 bytes and most are a single cycle */ + desc.length = 2; + desc.cycles = 1; + + switch (opcode>>12) + { + case 0: + return describe_group_0(desc, prev, opcode); + + case 1: // MOVLS4 + desc.regin[0] |= REGFLAG_R(Rn) | REGFLAG_R(Rm); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 2: + return describe_group_2(desc, prev, opcode); + + case 3: + return describe_group_3(desc, prev, opcode); + + case 4: + return describe_group_4(desc, prev, opcode); + + case 5: // MOVLL4 + desc.regin[0] |= REGFLAG_R(Rm); + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 6: + return describe_group_6(desc, prev, opcode); + + case 7: // ADDI + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 8: + return describe_group_8(desc, prev, opcode); + + case 9: // MOVWI + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 11: // BSR + desc.regout[1] |= REGFLAG_PR; + // (intentional fallthrough - BSR is BRA with the addition of PR = the return address) + case 10: // BRA + { + int32_t disp = ((int32_t)opcode << 20) >> 20; + + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = (desc.pc + 2) + disp * 2 + 2; + desc.delayslots = 1; + desc.cycles = 2; + return true; + } + + case 12: + return describe_group_12(desc, prev, opcode); + + case 13: // MOVLI + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 14: // MOVI + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 15: // NOP + return describe_group_15(desc, prev, opcode); + } + + return false; +} + + +bool sh_frontend::describe_group_2(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & 15) + { + case 0: // MOVBS(Rm, Rn); + case 1: // MOVWS(Rm, Rn); + case 2: // MOVLS(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 3: // NOP(); + return true; + + case 4: // MOVBM(Rm, Rn); + case 5: // MOVWM(Rm, Rn); + case 6: // MOVLM(Rm, Rn); + case 13: // XTRCT(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 7: // DIV0S(Rm, Rn); + case 8: // TST(Rm, Rn); + case 12: // CMPSTR(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 9: // AND(Rm, Rn); + case 10: // XOR(Rm, Rn); + case 11: // OR(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 14: // MULU(Rm, Rn); + case 15: // MULS(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL | REGFLAG_MACH; + desc.cycles = 2; + return true; + } + + return false; +} + +bool sh_frontend::describe_group_3(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & 15) + { + case 0: // CMPEQ(Rm, Rn); + case 2: // CMPHS(Rm, Rn); + case 3: // CMPGE(Rm, Rn); + case 6: // CMPHI(Rm, Rn); + case 7: // CMPGT(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 1: // NOP(); + case 9: // NOP(); + return true; + + case 4: // DIV1(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 5: // DMULU(Rm, Rn); + case 13: // DMULS(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL | REGFLAG_MACH; + desc.cycles = 2; + return true; + + case 8: // SUB(Rm, Rn); + case 12: // ADD(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 10: // SUBC(Rm, Rn); + case 11: // SUBV(Rm, Rn); + case 14: // ADDC(Rm, Rn); + case 15: // ADDV(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + } + return false; +} + + +bool sh_frontend::describe_group_6(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & 15) + { + case 0: // MOVBL(Rm, Rn); + case 1: // MOVWL(Rm, Rn); + case 2: // MOVLL(Rm, Rn); + case 3: // MOV(Rm, Rn); + case 7: // NOT(Rm, Rn); + case 9: // SWAPW(Rm, Rn); + case 11: // NEG(Rm, Rn); + case 12: // EXTUB(Rm, Rn); + case 13: // EXTUW(Rm, Rn); + case 14: // EXTSB(Rm, Rn); + case 15: // EXTSW(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 4: // MOVBP(Rm, Rn); + case 5: // MOVWP(Rm, Rn); + case 6: // MOVLP(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 8: // SWAPB(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 10: // NEGC(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + } + return false; +} + +bool sh_frontend::describe_group_8(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + int32_t disp; + + switch ( opcode & (15<<8) ) + { + case 0 << 8: // MOVBS4(opcode & 0x0f, Rm); + case 1 << 8: // MOVWS4(opcode & 0x0f, Rm); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(0); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 2<< 8: // NOP(); + case 3<< 8: // NOP(); + case 6<< 8: // NOP(); + case 7<< 8: // NOP(); + case 10<< 8: // NOP(); + case 12<< 8: // NOP(); + case 14<< 8: // NOP(); + return true; + + case 4<< 8: // MOVBL4(Rm, opcode & 0x0f); + case 5<< 8: // MOVWL4(Rm, opcode & 0x0f); + desc.regin[0] |= REGFLAG_R(Rm); + desc.regout[0] |= REGFLAG_R(0); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 8<< 8: // CMPIM(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(Rm); + desc.regin[1] |= REGFLAG_SR; + desc.regout[1] |= REGFLAG_SR; + return true; + + case 9<< 8: // BT(opcode & 0xff); + case 11<< 8: // BF(opcode & 0xff); + desc.flags |= OPFLAG_IS_CONDITIONAL_BRANCH; + desc.cycles = 3; + disp = ((int32_t)opcode << 24) >> 24; + desc.targetpc = (desc.pc + 2) + disp * 2 + 2; + return true; + + case 13<< 8: // BTS(opcode & 0xff); + case 15<< 8: // BFS(opcode & 0xff); + desc.flags |= OPFLAG_IS_CONDITIONAL_BRANCH; + desc.cycles = 2; + disp = ((int32_t)opcode << 24) >> 24; + desc.targetpc = (desc.pc + 2) + disp * 2 + 2; + desc.delayslots = 1; + return true; + } + + return false; +} + +bool sh_frontend::describe_group_12(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & (15<<8)) + { + case 0<<8: // MOVBSG(opcode & 0xff); + case 1<<8: // MOVWSG(opcode & 0xff); + case 2<<8: // MOVLSG(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(0); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 3<<8: // TRAPA(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(15); + desc.regin[1] |= REGFLAG_VBR; + desc.regout[0] |= REGFLAG_R(15); + desc.cycles = 8; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.flags |= OPFLAG_READS_MEMORY | OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + return true; + + case 4<<8: // MOVBLG(opcode & 0xff); + case 5<<8: // MOVWLG(opcode & 0xff); + case 6<<8: // MOVLLG(opcode & 0xff); + case 7<<8: // MOVA(opcode & 0xff); + desc.regout[0] |= REGFLAG_R(0); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 8<<8: // TSTI(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(0); + desc.regin[1] |= REGFLAG_SR; + desc.regout[1] |= REGFLAG_SR; + return true; + + case 9<<8: // ANDI(opcode & 0xff); + case 10<<8: // XORI(opcode & 0xff); + case 11<<8: // ORI(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(0); + desc.regout[0] |= REGFLAG_R(0); + return true; + + case 12<<8: // TSTM(opcode & 0xff); + case 13<<8: // ANDM(opcode & 0xff); + case 14<<8: // XORM(opcode & 0xff); + case 15<<8: // ORM(opcode & 0xff); + desc.regin[0] |= REGFLAG_R(0); + desc.regin[1] |= REGFLAG_SR | REGFLAG_GBR; + desc.regout[1] |= REGFLAG_SR; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + } + + return false; +} + + + +bool sh_frontend::describe_group_0(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & 0x3F) + { + case 0x00: // NOP(); + case 0x01: // NOP(); + case 0x09: // NOP(); + case 0x10: // NOP(); + case 0x11: // NOP(); + case 0x13: // NOP(); + case 0x20: // NOP(); + case 0x21: // NOP(); + case 0x30: // NOP(); + case 0x31: // NOP(); + case 0x32: // NOP(); + case 0x33: // NOP(); + case 0x38: // NOP(); + case 0x39: // NOP(); + case 0x3a: // NOP(); + case 0x3b: // NOP(); + return true; + + case 0x02: // STCSR(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 0x03: // BSRF(Rn); + desc.regout[1] |= REGFLAG_PR; + + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + + return true; + + case 0x04: // MOVBS0(Rm, Rn); + case 0x05: // MOVWS0(Rm, Rn); + case 0x06: // MOVLS0(Rm, Rn); + case 0x14: // MOVBS0(Rm, Rn); + case 0x15: // MOVWS0(Rm, Rn); + case 0x16: // MOVLS0(Rm, Rn); + case 0x24: // MOVBS0(Rm, Rn); + case 0x25: // MOVWS0(Rm, Rn); + case 0x26: // MOVLS0(Rm, Rn); + case 0x34: // MOVBS0(Rm, Rn); + case 0x35: // MOVWS0(Rm, Rn); + case 0x36: // MOVLS0(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn) | REGFLAG_R(0); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x07: // MULL(Rm, Rn); + case 0x17: // MULL(Rm, Rn); + case 0x27: // MULL(Rm, Rn); + case 0x37: // MULL(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rn) | REGFLAG_R(Rm); + desc.regout[1] |= REGFLAG_MACL; + desc.cycles = 2; + return true; + + case 0x08: // CLRT(); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x0a: // STSMACH(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACH; + return true; + + case 0x0b: // RTS(); + desc.regin[1] |= REGFLAG_PR; + + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + desc.cycles = 2; + + return true; + + case 0x0c: // MOVBL0(Rm, Rn); + case 0x0d: // MOVWL0(Rm, Rn); + case 0x0e: // MOVLL0(Rm, Rn); + case 0x1c: // MOVBL0(Rm, Rn); + case 0x1d: // MOVWL0(Rm, Rn); + case 0x1e: // MOVLL0(Rm, Rn); + case 0x2c: // MOVBL0(Rm, Rn); + case 0x2d: // MOVWL0(Rm, Rn); + case 0x2e: // MOVLL0(Rm, Rn); + case 0x3c: // MOVBL0(Rm, Rn); + case 0x3d: // MOVWL0(Rm, Rn); + case 0x3e: // MOVLL0(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(0); + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x0f: // MAC_L(Rm, Rn); + case 0x1f: // MAC_L(Rm, Rn); + case 0x2f: // MAC_L(Rm, Rn); + case 0x3f: // MAC_L(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL | REGFLAG_MACH; + desc.cycles = 3; + return true; + + case 0x12: // STCGBR(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_GBR; + return true; + + case 0x18: // SETT(); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x19: // DIV0U(); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x1a: // STSMACL(Rn); + desc.regin[1] |= REGFLAG_MACL; + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 0x1b: // SLEEP(); + desc.cycles = 3; + return true; + + case 0x22: // STCVBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_VBR; + return true; + + case 0x23: // BRAF(Rn); + desc.regin[0] |= REGFLAG_R(Rm); + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + desc.cycles = 2; + return true; + + case 0x28: // CLRMAC(); + desc.regout[1] |= REGFLAG_MACL | REGFLAG_MACH; + return true; + + case 0x29: // MOVT(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 0x2a: // STSPR(Rn); + desc.regin[1] |= REGFLAG_PR; + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 0x2b: // RTE(); + desc.regin[0] |= REGFLAG_R(15); + desc.regout[0] |= REGFLAG_R(15); + + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE | OPFLAG_CAN_EXPOSE_EXTERNAL_INT; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + desc.cycles = 4; + + return true; + } + + return false; +} + + +bool sh_frontend::describe_group_4(opcode_desc &desc, const opcode_desc *prev, uint16_t opcode) +{ + switch (opcode & 0x3F) + { + case 0x00: // SHLL(Rn); + case 0x01: // SHLR(Rn); + case 0x04: // ROTL(Rn); + case 0x05: // ROTR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x02: // STSMMACH(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_MACH; + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x03: // STCMSR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.cycles = 2; + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x06: // LDSMMACH(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACH; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x07: // LDCMSR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + desc.cycles = 3; + desc.flags |= OPFLAG_READS_MEMORY | OPFLAG_CAN_EXPOSE_EXTERNAL_INT | OPFLAG_END_SEQUENCE; + return true; + + case 0x08: // SHLL2(Rn); + case 0x09: // SHLR2(Rn); + case 0x18: // SHLL8(Rn); + case 0x19: // SHLR8(Rn); + case 0x28: // SHLL16(Rn); + case 0x29: // SHLR16(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + return true; + + case 0x0a: // LDSMACH(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACH; + return true; + + case 0x0b: // JSR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_PR; + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + return true; + + case 0x0e: // LDCSR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + desc.flags |= OPFLAG_CAN_EXPOSE_EXTERNAL_INT | OPFLAG_END_SEQUENCE; + return true; + + case 0x0f: // MAC_W(Rm, Rn); + case 0x1f: // MAC_W(Rm, Rn); + case 0x2f: // MAC_W(Rm, Rn); + case 0x3f: // MAC_W(Rm, Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_MACL | REGFLAG_MACH; + desc.regout[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL | REGFLAG_MACH; + desc.cycles = 3; + return true; + + case 0x10: // DT(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x11: // CMPPZ(Rn); + case 0x15: // CMPPL(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x12: // STSMMACL(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_MACL; + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x13: // STCMGBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_GBR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x16: // LDSMMACL(Rn); + desc.regin[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rm) | REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x17: // LDCMGBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_GBR; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x1a: // LDSMACL(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_MACL; + return true; + + case 0x1b: // TAS(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[1] |= REGFLAG_SR; + desc.cycles = 4; + desc.flags |= OPFLAG_READS_MEMORY | OPFLAG_WRITES_MEMORY; + return true; + + case 0x1e: // LDCGBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_GBR; + return true; + + case 0x20: // SHAL(Rn); + case 0x21: // SHAR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x22: // STSMPR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_PR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x23: // STCMVBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_VBR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.flags |= OPFLAG_WRITES_MEMORY; + return true; + + case 0x24: // ROTCL(Rn); + case 0x25: // ROTCR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regin[1] |= REGFLAG_SR; + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_SR; + return true; + + case 0x26: // LDSMPR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_PR; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x27: // LDCMVBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_VBR; + desc.flags |= OPFLAG_READS_MEMORY; + return true; + + case 0x2a: // LDSPR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_PR; + return true; + + case 0x2b: // JMP(Rm); + desc.regin[0] |= REGFLAG_R(Rm); + desc.flags |= OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_END_SEQUENCE; + desc.targetpc = BRANCH_TARGET_DYNAMIC; + desc.delayslots = 1; + return true; + + case 0x2e: // LDCVBR(Rn); + desc.regin[0] |= REGFLAG_R(Rn); + desc.regout[1] |= REGFLAG_VBR; + return true; + + case 0x0c: // NOP(); + case 0x0d: // NOP(); + case 0x14: // NOP(); + case 0x1c: // NOP(); + case 0x1d: // NOP(); + case 0x2c: // NOP(); + case 0x2d: // NOP(); + case 0x30: // NOP(); + case 0x31: // NOP(); + case 0x32: // NOP(); + case 0x33: // NOP(); + case 0x34: // NOP(); + case 0x35: // NOP(); + case 0x36: // NOP(); + case 0x37: // NOP(); + case 0x38: // NOP(); + case 0x39: // NOP(); + case 0x3a: // NOP(); + case 0x3b: // NOP(); + case 0x3c: // NOP(); + case 0x3d: // NOP(); + case 0x3e: // NOP(); + return true; + } + + return false; +} |