move lots of source files around to match their actual placement in the original treemain

1 files changed, 670 insertions, 0 deletions

diff --git a/compiler_and_linker/BackEnd/PowerPC/Scheduler/MachineSimulation604.c b/compiler_and_linker/BackEnd/PowerPC/Scheduler/MachineSimulation604.c
new file mode 100644
index 0000000..9775c9e
--- /dev/null
+++ b/compiler_and_linker/BackEnd/PowerPC/Scheduler/MachineSimulation604.c
@@ -0,0 +1,670 @@
+#include "compiler/Scheduler.h"
+#include "compiler/PCode.h"
+#include "compiler/PCodeInfo.h"
+
+// https://archive.org/details/bitsavers_motorolaPosManualNov94_22719504
+
+typedef enum Stage {
+    SCIU, // Single-Cycle Integer Unit 1
+    SCIU2, // Single-Cycle Integer Unit 2
+    MCIU, // Multiple-Cycle Integer Unit
+    FPU1, // Floating Point Unit
+    FPU2,
+    FPU3,
+    LSU1, // Load/Store Unit
+    LSU2,
+    BPU, // Branch Prediction Unit
+    NumStages
+} Stage;
+
+static struct {
+    // the instruction currently in this pipeline stage
+    PCode *instr;
+
+    // how many cycles are left for this instruction to finish
+    int remaining;
+} pipeline[NumStages];
+
+enum {
+    MaxEntries = 16
+};
+
+static struct {
+    // how many entries remain unused in the queue
+    unsigned int free;
+
+    // how many entries are currently used in the queue
+    unsigned int used;
+
+    // the index of the next instruction that will be retired
+    unsigned int nextToRetire;
+
+    // the index of the next free slot that will be used when an instruction is dispatched
+    unsigned int nextFreeSlot;
+
+    // circular array of entries in the completion queue
+    struct {
+        PCode *instr;
+        int completed;
+    } entries[MaxEntries];
+} completionbuffers;
+
+static PCode *sciu_completed_instruction;
+static PCode *sciu2_completed_instruction;
+
+static struct {
+    // the initial stage for this instruction
+    Stage stage;
+
+    // the total amount of cycles required by this instruction
+    char latency;
+
+    // how long it takes to finish each stage
+    char cycles[3];
+
+    // does this instruction serialise?
+    char serializes;
+} instruction_timing[OPCODE_MAX] = {
+    BPU,  0,  0,  0,  0,  1,  // PC_B
+    BPU,  0,  0,  0,  0,  1,  // PC_BL
+    BPU,  0,  0,  0,  0,  1,  // PC_BC
+    BPU,  0,  0,  0,  0,  1,  // PC_BCLR
+    BPU,  0,  0,  0,  0,  1,  // PC_BCCTR
+    BPU,  0,  0,  0,  0,  1,  // PC_BT
+    BPU,  0,  0,  0,  0,  1,  // PC_BTLR
+    BPU,  0,  0,  0,  0,  1,  // PC_BTCTR
+    BPU,  0,  0,  0,  0,  1,  // PC_BF
+    BPU,  0,  0,  0,  0,  1,  // PC_BFLR
+    BPU,  0,  0,  0,  0,  1,  // PC_BFCTR
+    BPU,  0,  0,  0,  0,  1,  // PC_BDNZ
+    BPU,  0,  0,  0,  0,  1,  // PC_BDNZT
+    BPU,  0,  0,  0,  0,  1,  // PC_BDNZF
+    BPU,  0,  0,  0,  0,  1,  // PC_BDZ
+    BPU,  0,  0,  0,  0,  1,  // PC_BDZT
+    BPU,  0,  0,  0,  0,  1,  // PC_BDZF
+    BPU,  0,  0,  0,  0,  1,  // PC_BLR
+    BPU,  0,  0,  0,  0,  1,  // PC_BCTR
+    BPU,  0,  0,  0,  0,  1,  // PC_BCTRL
+    BPU,  0,  0,  0,  0,  1,  // PC_BLRL
+    LSU1,  2,  1,  1,  0,  0,  // PC_LBZ
+    LSU1,  2,  1,  1,  0,  0,  // PC_LBZU
+    LSU1,  2,  1,  1,  0,  0,  // PC_LBZX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LBZUX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHZ
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHZU
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHZX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHZUX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHA
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHAU
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHAX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHAUX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LHBRX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LWZ
+    LSU1,  2,  1,  1,  0,  0,  // PC_LWZU
+    LSU1,  2,  1,  1,  0,  0,  // PC_LWZX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LWZUX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LWBRX
+    LSU1,  2,  1,  1,  0,  0,  // PC_LMW
+    LSU1,  3,  1,  1,  0,  0,  // PC_STB
+    LSU1,  3,  1,  1,  0,  0,  // PC_STBU
+    LSU1,  3,  1,  1,  0,  0,  // PC_STBX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STBUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STH
+    LSU1,  3,  1,  1,  0,  0,  // PC_STHU
+    LSU1,  3,  1,  1,  0,  0,  // PC_STHX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STHUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STHBRX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STW
+    LSU1,  3,  1,  1,  0,  0,  // PC_STWU
+    LSU1,  3,  1,  1,  0,  0,  // PC_STWX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STWUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STWBRX
+    LSU1,  2,  1,  1,  0,  0,  // PC_STMW
+    LSU1,  2,  1,  1,  0,  0,  // PC_DCBF
+    LSU1,  2,  1,  1,  0,  0,  // PC_DCBST
+    LSU1,  2,  1,  1,  0,  0,  // PC_DCBT
+    LSU1,  2,  1,  1,  0,  0,  // PC_DCBTST
+    LSU1,  2,  1,  1,  0,  0,  // PC_DCBZ
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADD
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDC
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDE
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDI
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDIC
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDICR
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDIS
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDME
+    SCIU,  1,  1,  0,  0,  0,  // PC_ADDZE
+    MCIU,  20, 20, 0,  0,  0,  // PC_DIVW
+    MCIU,  20, 20, 0,  0,  0,  // PC_DIVWU
+    MCIU,  4,  4,  0,  0,  0,  // PC_MULHW
+    MCIU,  4,  4,  0,  0,  0,  // PC_MULHWU
+    MCIU,  3,  3,  0,  0,  0,  // PC_MULLI
+    MCIU,  4,  4,  0,  0,  0,  // PC_MULLW
+    SCIU,  1,  1,  0,  0,  0,  // PC_NEG
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBF
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBFC
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBFE
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBFIC
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBFME
+    SCIU,  1,  1,  0,  0,  0,  // PC_SUBFZE
+    SCIU,  3,  1,  0,  0,  0,  // PC_CMPI
+    SCIU,  3,  1,  0,  0,  0,  // PC_CMP
+    SCIU,  3,  1,  0,  0,  0,  // PC_CMPLI
+    SCIU,  3,  1,  0,  0,  0,  // PC_CMPL
+    SCIU,  1,  1,  0,  0,  0,  // PC_ANDI
+    SCIU,  1,  1,  0,  0,  0,  // PC_ANDIS
+    SCIU,  1,  1,  0,  0,  0,  // PC_ORI
+    SCIU,  1,  1,  0,  0,  0,  // PC_ORIS
+    SCIU,  1,  1,  0,  0,  0,  // PC_XORI
+    SCIU,  1,  1,  0,  0,  0,  // PC_XORIS
+    SCIU,  1,  1,  0,  0,  0,  // PC_AND
+    SCIU,  1,  1,  0,  0,  0,  // PC_OR
+    SCIU,  1,  1,  0,  0,  0,  // PC_XOR
+    SCIU,  1,  1,  0,  0,  0,  // PC_NAND
+    SCIU,  1,  1,  0,  0,  0,  // PC_NOR
+    SCIU,  1,  1,  0,  0,  0,  // PC_EQV
+    SCIU,  1,  1,  0,  0,  0,  // PC_ANDC
+    SCIU,  1,  1,  0,  0,  0,  // PC_ORC
+    SCIU,  1,  1,  0,  0,  0,  // PC_EXTSB
+    SCIU,  1,  1,  0,  0,  0,  // PC_EXTSH
+    SCIU,  1,  1,  0,  0,  0,  // PC_CNTLZW
+    SCIU,  1,  1,  0,  0,  0,  // PC_RLWINM
+    SCIU,  1,  1,  0,  0,  0,  // PC_RLWNM
+    SCIU,  1,  1,  0,  0,  0,  // PC_RLWIMI
+    SCIU,  1,  1,  0,  0,  0,  // PC_SLW
+    SCIU,  1,  1,  0,  0,  0,  // PC_SRW
+    SCIU,  1,  1,  0,  0,  0,  // PC_SRAWI
+    SCIU,  1,  1,  0,  0,  0,  // PC_SRAW
+    BPU,  1,  1,  0,  0,  0,  // PC_CRAND
+    BPU,  1,  1,  0,  0,  0,  // PC_CRANDC
+    BPU,  1,  1,  0,  0,  0,  // PC_CREQV
+    BPU,  1,  1,  0,  0,  0,  // PC_CRNAND
+    BPU,  1,  1,  0,  0,  0,  // PC_CRNOR
+    BPU,  1,  1,  0,  0,  0,  // PC_CROR
+    BPU,  1,  1,  0,  0,  0,  // PC_CRORC
+    BPU,  1,  1,  0,  0,  0,  // PC_CRXOR
+    BPU,  1,  1,  0,  0,  0,  // PC_MCRF
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTXER
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTCTR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTLR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTCRF
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTMSR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTSPR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFMSR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFSPR
+    MCIU,  3,  3,  0,  0,  0,  // PC_MFXER
+    MCIU,  3,  3,  0,  0,  0,  // PC_MFCTR
+    MCIU,  3,  3,  0,  0,  0,  // PC_MFLR
+    MCIU,  3,  3,  0,  0,  0,  // PC_MFCR
+    FPU1,  3,  1,  1,  1,  0,  // PC_MFFS
+    FPU1,  3,  1,  1,  1,  0,  // PC_MTFSF
+    LSU1,  1,  0,  0,  0,  1,  // PC_EIEIO
+    LSU1,  1,  0,  0,  0,  1,  // PC_ISYNC
+    LSU1,  1,  0,  0,  0,  1,  // PC_SYNC
+    LSU1,  1,  1,  0,  0,  1,  // PC_RFI
+    SCIU,  1,  1,  0,  0,  0,  // PC_LI
+    SCIU,  1,  1,  0,  0,  0,  // PC_LIS
+    SCIU,  1,  1,  0,  0,  0,  // PC_MR
+    SCIU,  1,  1,  0,  0,  0,  // PC_NOP
+    SCIU,  1,  1,  0,  0,  0,  // PC_NOT
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFS
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFSU
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFSX
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFSUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFD
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFDU
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFDX
+    LSU1,  3,  1,  1,  0,  0,  // PC_LFDUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFS
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFSU
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFSX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFSUX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFD
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFDU
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFDX
+    LSU1,  3,  1,  1,  0,  0,  // PC_STFDUX
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMR
+    FPU1,  3,  1,  1,  1,  0,  // PC_FABS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNEG
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNABS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FADD
+    FPU1,  3,  1,  1,  1,  0,  // PC_FADDS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FSUB
+    FPU1,  3,  1,  1,  1,  0,  // PC_FSUBS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMUL
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMULS
+    FPU1,  32, 32, 0,  0,  0,  // PC_FDIV
+    FPU1,  18, 18, 0,  0,  0,  // PC_FDIVS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMADD
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMADDS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMSUB
+    FPU1,  3,  1,  1,  1,  0,  // PC_FMSUBS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNMADD
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNMADDS
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNMSUB
+    FPU1,  3,  1,  1,  1,  0,  // PC_FNMSUBS
+    FPU1,  18, 18, 0,  0,  0,  // PC_FRES
+    FPU1,  3,  1,  1,  1,  0,  // PC_FRSQRTE
+    FPU1,  3,  1,  1,  1,  0,  // PC_FSEL
+    FPU1,  3,  1,  1,  1,  0,  // PC_FRSP
+    FPU1,  3,  1,  1,  1,  0,  // PC_FCTIW
+    FPU1,  3,  1,  1,  1,  0,  // PC_FCTIWZ
+    FPU1,  5,  1,  1,  1,  0,  // PC_FCMPU
+    FPU1,  5,  1,  1,  1,  0,  // PC_FCMPO
+    LSU1,  1,  1,  0,  0,  0,  // PC_LWARX
+    LSU1,  1,  1,  0,  0,  0,  // PC_LSWI
+    LSU1,  1,  1,  0,  0,  0,  // PC_LSWX
+    LSU1,  1,  1,  0,  0,  0,  // PC_STFIWX
+    LSU1,  1,  1,  0,  0,  0,  // PC_STSWI
+    LSU1,  1,  1,  0,  0,  0,  // PC_STSWX
+    LSU1,  1,  1,  0,  0,  0,  // PC_STWCX
+    MCIU,  1,  1,  0,  0,  1,  // PC_ECIWX
+    MCIU,  1,  1,  0,  0,  1,  // PC_ECOWX
+    MCIU,  1,  1,  0,  0,  0,  // PC_DCBI
+    MCIU,  1,  1,  0,  0,  0,  // PC_ICBI
+    MCIU,  1,  1,  0,  0,  0,  // PC_MCRFS
+    MCIU,  1,  1,  0,  0,  0,  // PC_MCRXR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFTB
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFSR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTSR
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFSRIN
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTSRIN
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTFSB0
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTFSB1
+    MCIU,  1,  1,  0,  0,  0,  // PC_MTFSFI
+    MCIU,  1,  1,  0,  0,  1,  // PC_SC
+    FPU1,  1,  1,  0,  0,  0,  // PC_FSQRT
+    FPU1,  1,  1,  0,  0,  0,  // PC_FSQRTS
+    MCIU,  1,  1,  0,  0,  0,  // PC_TLBIA
+    MCIU,  1,  1,  0,  0,  0,  // PC_TLBIE
+    MCIU,  1,  1,  0,  0,  0,  // PC_TLBLD
+    MCIU,  1,  1,  0,  0,  0,  // PC_TLBLI
+    MCIU,  1,  1,  0,  0,  0,  // PC_TLBSYNC
+    MCIU,  1,  1,  0,  0,  1,  // PC_TW
+    MCIU,  1,  1,  0,  0,  1,  // PC_TRAP
+    MCIU,  1,  1,  0,  0,  1,  // PC_TWI
+    MCIU,  1,  1,  0,  0,  1,  // PC_OPWORD
+    MCIU,  1,  1,  0,  0,  0,  // PC_MFROM
+    MCIU,  1,  1,  0,  0,  1,  // PC_DSA
+    MCIU,  1,  1,  0,  0,  1,  // PC_ESA
+    MCIU,  0,  0,  0,  0,  0,  // PC_DCCCI
+    MCIU,  0,  0,  0,  0,  0,  // PC_DCREAD
+    MCIU,  0,  0,  0,  0,  0,  // PC_ICBT
+    MCIU,  0,  0,  0,  0,  0,  // PC_ICCCI
+    MCIU,  0,  0,  0,  0,  0,  // PC_ICREAD
+    MCIU,  0,  0,  0,  0,  0,  // PC_RFCI
+    MCIU,  0,  0,  0,  0,  0,  // PC_TLBRE
+    MCIU,  0,  0,  0,  0,  0,  // PC_TLBSX
+    MCIU,  0,  0,  0,  0,  0,  // PC_TLBWE
+    MCIU,  0,  0,  0,  0,  0,  // PC_WRTEE
+    MCIU,  0,  0,  0,  0,  0,  // PC_WRTEEI
+    MCIU,  0,  0,  0,  0,  0,  // PC_MFDCR
+    MCIU,  0,  0,  0,  0,  0,  // PC_MTDCR
+    MCIU,  0,  0,  0,  0,  0,  // PC_DCBA
+    SCIU,  0,  0,  0,  0,  0,  // PC_DSS
+    SCIU,  0,  0,  0,  0,  0,  // PC_DSSALL
+    SCIU,  0,  0,  0,  0,  0,  // PC_DST
+    SCIU,  0,  0,  0,  0,  0,  // PC_DSTT
+    SCIU,  0,  0,  0,  0,  0,  // PC_DSTST
+    SCIU,  0,  0,  0,  0,  0,  // PC_DSTSTT
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVEBX
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVEHX
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVEWX
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVSL
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVSR
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVX
+    SCIU,  0,  0,  0,  0,  0,  // PC_LVXL
+    SCIU,  0,  0,  0,  0,  0,  // PC_STVEBX
+    SCIU,  0,  0,  0,  0,  0,  // PC_STVEHX
+    SCIU,  0,  0,  0,  0,  0,  // PC_STVEWX
+    SCIU,  0,  0,  0,  0,  0,  // PC_STVX
+    SCIU,  0,  0,  0,  0,  0,  // PC_STVXL
+    SCIU,  0,  0,  0,  0,  0,  // PC_MFVSCR
+    SCIU,  0,  0,  0,  0,  0,  // PC_MTVSCR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDCUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDSBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDSHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDSWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUBM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUHM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUWM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VADDUWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAND
+    SCIU,  0,  0,  0,  0,  0,  // PC_VANDC
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGSW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VAVGUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCFSX
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCFUX
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPBFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPEQFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPEQUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPEQUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPEQUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGEFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTSW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCMPGTUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCTSXS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VCTUXS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VEXPTEFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VLOGEFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXSW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMAXUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINSW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMINUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGHB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGHH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGHW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGLB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGLH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRGLW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULESB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULESH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULEUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULEUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULOSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULOSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULOUB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMULOUH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VNOR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VOR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKPX
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKSHSS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKSHUS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKSWSS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKSWUS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKUHUM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKUHUS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKUWUM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPKUWUS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VREFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRFIM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRFIN
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRFIP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRFIZ
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRLB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRLH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRLW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VRSQRTEFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSL
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSLB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSLH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSLO
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSLW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTISB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTISH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSPLTISW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRAB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRAH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRAW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRO
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSRW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBCUW
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBSBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBSHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBSWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUBM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUHM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUWM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUBUWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUMSWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUM2SWS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUM4SBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUM4SHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSUM4UBS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKHPX
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKHSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKHSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKLPX
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKLSB
+    SCIU,  0,  0,  0,  0,  0,  // PC_VUPKLSH
+    SCIU,  0,  0,  0,  0,  0,  // PC_VXOR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMADDFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMHADDSHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMHRADDSHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMLADDUHM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMMBM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMSHM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMSHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMUBM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMUHM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMSUMUHS
+    SCIU,  0,  0,  0,  0,  0,  // PC_VNMSUBFP
+    SCIU,  0,  0,  0,  0,  0,  // PC_VPERM
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSEL
+    SCIU,  0,  0,  0,  0,  0,  // PC_VSLDOI
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMR
+    SCIU,  0,  0,  0,  0,  0,  // PC_VMRP
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLE
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLEQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLIQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLLIQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLLQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SLQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRAIQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRAQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRE
+    SCIU,  0,  0,  0,  0,  0,  // PC_SREA
+    SCIU,  0,  0,  0,  0,  0,  // PC_SREQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRIQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRLIQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRLQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_SRQ
+    SCIU,  0,  0,  0,  0,  0,  // PC_MASKG
+    SCIU,  0,  0,  0,  0,  0,  // PC_MASKIR
+    SCIU,  0,  0,  0,  0,  0,  // PC_LSCBX
+    SCIU,  0,  0,  0,  0,  0,  // PC_DIV
+    SCIU,  0,  0,  0,  0,  0,  // PC_DIVS
+    SCIU,  0,  0,  0,  0,  0,  // PC_DOZ
+    SCIU,  0,  0,  0,  0,  0,  // PC_MUL
+    SCIU,  0,  0,  0,  0,  0,  // PC_NABS
+    SCIU,  0,  0,  0,  0,  0,  // PC_ABS
+    SCIU,  0,  0,  0,  0,  0,  // PC_CLCS
+    SCIU,  0,  0,  0,  0,  0,  // PC_DOZI
+    SCIU,  0,  0,  0,  0,  0,  // PC_RLMI
+    SCIU,  0,  0,  0,  0,  0,  // PC_RRIB
+};
+
+static void advance(int firstStage, int oldStage, int newStage) {
+    PCode *instr = pipeline[oldStage].instr;
+    int cycles = instruction_timing[instr->op].cycles[newStage - firstStage];
+    pipeline[newStage].instr = instr;
+    pipeline[newStage].remaining = cycles;
+    pipeline[oldStage].instr = NULL;
+}
+
+static void assign_completion_buffer(PCode *instr) {
+    completionbuffers.used++;
+    completionbuffers.free--;
+    completionbuffers.entries[completionbuffers.nextFreeSlot].instr = instr;
+    completionbuffers.entries[completionbuffers.nextFreeSlot].completed = 0;
+    completionbuffers.nextFreeSlot = (completionbuffers.nextFreeSlot + 1) % MaxEntries;
+}
+
+static void complete_instruction(int stage) {
+    PCode *instr = pipeline[stage].instr;
+    int buf = 0;
+    while (buf < MaxEntries && completionbuffers.entries[buf].instr != instr)
+        buf++;
+
+    completionbuffers.entries[buf].completed = 1;
+    pipeline[stage].instr = NULL;
+
+    if (stage == SCIU)
+        sciu_completed_instruction = instr;
+    else if (stage == SCIU2)
+        sciu2_completed_instruction = instr;
+}
+
+static void retire_instruction(void) {
+    completionbuffers.entries[completionbuffers.nextToRetire].instr = NULL;
+    completionbuffers.used--;
+    completionbuffers.free++;
+    completionbuffers.nextToRetire = (completionbuffers.nextToRetire + 1) % MaxEntries;
+}
+
+static int latency(PCode *instr) {
+    int cycles = instruction_timing[instr->op].latency;
+    if (PCODE_FLAG_SET_F(instr) & fRecordBit)
+        cycles += 2;
+    if (instr->op == PC_LMW || instr->op == PC_STMW)
+        cycles += instr->argCount - 2;
+    return cycles;
+}
+
+static void initialize(void) {
+    int stage;
+    int i;
+
+    for (stage = 0; stage < NumStages; stage++)
+        pipeline[stage].instr = NULL;
+
+    completionbuffers.free = MaxEntries;
+    completionbuffers.used = 0;
+    completionbuffers.nextToRetire = 0;
+    completionbuffers.nextFreeSlot = 0;
+    for (i = 0; i < MaxEntries; i++)
+        completionbuffers.entries[i].instr = NULL;
+
+    sciu_completed_instruction = NULL;
+    sciu2_completed_instruction = NULL;
+}
+
+static int can_issue(PCode *instr) {
+    PCode *check;
+    int stage = instruction_timing[instr->op].stage;
+
+    if (completionbuffers.free == 0)
+        return 0;
+
+    if (stage == SCIU) {
+        int isClear1 = !pipeline[SCIU].instr;
+        int isClear2 = !pipeline[SCIU2].instr;
+        if (!isClear1 && !isClear2)
+            return 0;
+        if (isClear1 && isClear2)
+            return 1;
+
+        if (isClear1)
+            check = pipeline[SCIU2].instr;
+        else
+            check = pipeline[SCIU].instr;
+
+        if (is_dependent(instr, check, RegClass_GPR))
+            return 0;
+        if (is_dependent(instr, sciu_completed_instruction, RegClass_GPR))
+            return 0;
+        if (is_dependent(instr, sciu2_completed_instruction, RegClass_GPR))
+            return 0;
+    } else {
+        if (pipeline[stage].instr)
+            return 0;
+    }
+
+    return 1;
+}
+
+static void issue(PCode *instr) {
+    int stage = instruction_timing[instr->op].stage;
+    int cycles = instruction_timing[instr->op].cycles[0];
+    if (stage == SCIU && pipeline[SCIU].instr)
+        stage = SCIU2;
+    assign_completion_buffer(instr);
+    pipeline[stage].instr = instr;
+    pipeline[stage].remaining = cycles;
+}
+
+static void advance_clock(void) {
+    int stage;
+    int i;
+
+    sciu_completed_instruction = NULL;
+    sciu2_completed_instruction = NULL;
+
+    for (stage = 0; stage < NumStages; stage++) {
+        if (pipeline[stage].instr && pipeline[stage].remaining)
+            --pipeline[stage].remaining;
+    }
+
+    for (i = 0; i < 5; i++) {
+        if (completionbuffers.used == 0)
+            break;
+        if (completionbuffers.entries[completionbuffers.nextToRetire].completed == 0)
+            break;
+        retire_instruction();
+    }
+
+    if (pipeline[SCIU].instr && pipeline[SCIU].remaining == 0)
+        complete_instruction(SCIU);
+    if (pipeline[SCIU2].instr && pipeline[SCIU2].remaining == 0)
+        complete_instruction(SCIU2);
+    if (pipeline[MCIU].instr && pipeline[MCIU].remaining == 0)
+        complete_instruction(MCIU);
+    if (pipeline[LSU2].instr && pipeline[LSU2].remaining == 0)
+        complete_instruction(LSU2);
+    if (pipeline[FPU3].instr && pipeline[FPU3].remaining == 0)
+        complete_instruction(FPU3);
+    if (pipeline[BPU].instr && pipeline[BPU].remaining == 0)
+        complete_instruction(BPU);
+
+    if (
+        pipeline[FPU1].instr &&
+        pipeline[FPU1].remaining == 0 &&
+        (pipeline[FPU1].instr->op == PC_FDIV || pipeline[FPU1].instr->op == PC_FDIVS)
+        )
+        complete_instruction(FPU1);
+
+    if (pipeline[FPU2].instr && pipeline[FPU2].remaining == 0 && !pipeline[FPU3].instr)
+        advance(FPU1, FPU2, FPU3);
+    if (pipeline[FPU1].instr && pipeline[FPU1].remaining == 0 && !pipeline[FPU2].instr)
+        advance(FPU1, FPU1, FPU2);
+    if (pipeline[LSU1].instr && pipeline[LSU1].remaining == 0 && !pipeline[LSU2].instr)
+        advance(LSU1, LSU1, LSU2);
+}
+
+static int serializes(PCode *instr) {
+    return instruction_timing[instr->op].serializes;
+}
+
+MachineInfo machine604 = {
+    4,
+    1,
+    0,
+    &latency,
+    &initialize,
+    &can_issue,
+    &issue,
+    &advance_clock,
+    &serializes,
+    &default_uses_vpermute_unit
+};