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#include "compiler/Scheduler.h"
#include "compiler/PCode.h"
#include "compiler/PCodeInfo.h"
// this is actually for 603e, but i couldn't find the 603 doc
// https://www.nxp.com/docs/en/reference-manual/MPC603EUM.pdf
typedef enum Stage {
BPU, // Branch Prediction Unit
IU, // Integer Unit
LSU1, // Load/Store Unit
LSU2,
FPU1, // Floating Point Unit
FPU2,
FPU3,
SRU, // System Register 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 = 5
};
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 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, 2, 1, 1, 0, 0, // PC_STB
LSU1, 2, 1, 1, 0, 0, // PC_STBU
LSU1, 2, 1, 1, 0, 0, // PC_STBX
LSU1, 2, 1, 1, 0, 0, // PC_STBUX
LSU1, 2, 1, 1, 0, 0, // PC_STH
LSU1, 2, 1, 1, 0, 0, // PC_STHU
LSU1, 2, 1, 1, 0, 0, // PC_STHX
LSU1, 2, 1, 1, 0, 0, // PC_STHUX
LSU1, 2, 1, 1, 0, 0, // PC_STHBRX
LSU1, 2, 1, 1, 0, 0, // PC_STW
LSU1, 2, 1, 1, 0, 0, // PC_STWU
LSU1, 2, 1, 1, 0, 0, // PC_STWX
LSU1, 2, 1, 1, 0, 0, // PC_STWUX
LSU1, 2, 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
IU, 1, 1, 0, 0, 0, // PC_ADD
IU, 1, 1, 0, 0, 0, // PC_ADDC
IU, 1, 1, 0, 0, 0, // PC_ADDE
IU, 1, 1, 0, 0, 0, // PC_ADDI
IU, 1, 1, 0, 0, 0, // PC_ADDIC
IU, 1, 1, 0, 0, 0, // PC_ADDICR
IU, 1, 1, 0, 0, 0, // PC_ADDIS
IU, 1, 1, 0, 0, 0, // PC_ADDME
IU, 1, 1, 0, 0, 0, // PC_ADDZE
IU, 37, 37, 0, 0, 0, // PC_DIVW
IU, 37, 37, 0, 0, 0, // PC_DIVWU
IU, 5, 5, 0, 0, 0, // PC_MULHW
IU, 5, 5, 0, 0, 0, // PC_MULHWU
IU, 3, 3, 0, 0, 0, // PC_MULLI
IU, 5, 5, 0, 0, 0, // PC_MULLW
IU, 1, 1, 0, 0, 0, // PC_NEG
IU, 1, 1, 0, 0, 0, // PC_SUBF
IU, 1, 1, 0, 0, 0, // PC_SUBFC
IU, 1, 1, 0, 0, 0, // PC_SUBFE
IU, 1, 1, 0, 0, 0, // PC_SUBFIC
IU, 1, 1, 0, 0, 0, // PC_SUBFME
IU, 1, 1, 0, 0, 0, // PC_SUBFZE
IU, 3, 1, 0, 0, 0, // PC_CMPI
IU, 3, 1, 0, 0, 0, // PC_CMP
IU, 3, 1, 0, 0, 0, // PC_CMPLI
IU, 3, 1, 0, 0, 0, // PC_CMPL
IU, 1, 1, 0, 0, 0, // PC_ANDI
IU, 1, 1, 0, 0, 0, // PC_ANDIS
IU, 1, 1, 0, 0, 0, // PC_ORI
IU, 1, 1, 0, 0, 0, // PC_ORIS
IU, 1, 1, 0, 0, 0, // PC_XORI
IU, 1, 1, 0, 0, 0, // PC_XORIS
IU, 1, 1, 0, 0, 0, // PC_AND
IU, 1, 1, 0, 0, 0, // PC_OR
IU, 1, 1, 0, 0, 0, // PC_XOR
IU, 1, 1, 0, 0, 0, // PC_NAND
IU, 1, 1, 0, 0, 0, // PC_NOR
IU, 1, 1, 0, 0, 0, // PC_EQV
IU, 1, 1, 0, 0, 0, // PC_ANDC
IU, 1, 1, 0, 0, 0, // PC_ORC
IU, 1, 1, 0, 0, 0, // PC_EXTSB
IU, 1, 1, 0, 0, 0, // PC_EXTSH
IU, 1, 1, 0, 0, 0, // PC_CNTLZW
IU, 1, 1, 0, 0, 0, // PC_RLWINM
IU, 1, 1, 0, 0, 0, // PC_RLWNM
IU, 1, 1, 0, 0, 0, // PC_RLWIMI
IU, 1, 1, 0, 0, 0, // PC_SLW
IU, 1, 1, 0, 0, 0, // PC_SRW
IU, 1, 1, 0, 0, 0, // PC_SRAWI
IU, 1, 1, 0, 0, 0, // PC_SRAW
SRU, 1, 1, 0, 0, 0, // PC_CRAND
SRU, 1, 1, 0, 0, 0, // PC_CRANDC
SRU, 1, 1, 0, 0, 0, // PC_CREQV
SRU, 1, 1, 0, 0, 0, // PC_CRNAND
SRU, 1, 1, 0, 0, 0, // PC_CRNOR
SRU, 1, 1, 0, 0, 0, // PC_CROR
SRU, 1, 1, 0, 0, 0, // PC_CRORC
SRU, 1, 1, 0, 0, 0, // PC_CRXOR
SRU, 1, 1, 0, 0, 0, // PC_MCRF
SRU, 2, 2, 0, 0, 0, // PC_MTXER
SRU, 2, 2, 0, 0, 0, // PC_MTCTR
SRU, 2, 2, 0, 0, 0, // PC_MTLR
SRU, 1, 1, 0, 0, 0, // PC_MTCRF
SRU, 1, 1, 0, 0, 1, // PC_MTMSR
SRU, 1, 1, 0, 0, 1, // PC_MTSPR
SRU, 1, 1, 0, 0, 1, // PC_MFMSR
SRU, 1, 1, 0, 0, 1, // PC_MFSPR
SRU, 1, 1, 0, 0, 0, // PC_MFXER
SRU, 1, 1, 0, 0, 0, // PC_MFCTR
SRU, 1, 1, 0, 0, 0, // PC_MFLR
SRU, 1, 1, 0, 0, 0, // PC_MFCR
FPU1, 3, 1, 1, 1, 0, // PC_MFFS
FPU1, 3, 1, 1, 1, 0, // PC_MTFSF
SRU, 1, 1, 0, 0, 1, // PC_EIEIO
SRU, 1, 1, 0, 0, 1, // PC_ISYNC
SRU, 1, 1, 0, 0, 1, // PC_SYNC
SRU, 1, 1, 0, 0, 1, // PC_RFI
IU, 1, 1, 0, 0, 0, // PC_LI
IU, 1, 1, 0, 0, 0, // PC_LIS
IU, 1, 1, 0, 0, 0, // PC_MR
IU, 1, 1, 0, 0, 0, // PC_NOP
IU, 1, 1, 0, 0, 0, // PC_NOT
LSU1, 2, 1, 1, 0, 0, // PC_LFS
LSU1, 2, 1, 1, 0, 0, // PC_LFSU
LSU1, 2, 1, 1, 0, 0, // PC_LFSX
LSU1, 2, 1, 1, 0, 0, // PC_LFSUX
LSU1, 2, 1, 1, 0, 0, // PC_LFD
LSU1, 2, 1, 1, 0, 0, // PC_LFDU
LSU1, 2, 1, 1, 0, 0, // PC_LFDX
LSU1, 2, 1, 1, 0, 0, // PC_LFDUX
LSU1, 2, 1, 1, 0, 0, // PC_STFS
LSU1, 2, 1, 1, 0, 0, // PC_STFSU
LSU1, 2, 1, 1, 0, 0, // PC_STFSX
LSU1, 2, 1, 1, 0, 0, // PC_STFSUX
LSU1, 2, 1, 1, 0, 0, // PC_STFD
LSU1, 2, 1, 1, 0, 0, // PC_STFDU
LSU1, 2, 1, 1, 0, 0, // PC_STFDX
LSU1, 2, 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, 4, 2, 1, 1, 0, // PC_FMUL
FPU1, 3, 1, 1, 1, 0, // PC_FMULS
FPU1, 33, 33, 0, 0, 0, // PC_FDIV
FPU1, 18, 18, 0, 0, 0, // PC_FDIVS
FPU1, 4, 2, 1, 1, 0, // PC_FMADD
FPU1, 3, 1, 1, 1, 0, // PC_FMADDS
FPU1, 4, 2, 1, 1, 0, // PC_FMSUB
FPU1, 3, 1, 1, 1, 0, // PC_FMSUBS
FPU1, 4, 2, 1, 1, 0, // PC_FNMADD
FPU1, 3, 1, 1, 1, 0, // PC_FNMADDS
FPU1, 4, 2, 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
IU, 1, 1, 0, 0, 1, // PC_ECIWX
IU, 1, 1, 0, 0, 1, // PC_ECOWX
IU, 1, 1, 0, 0, 0, // PC_DCBI
IU, 1, 1, 0, 0, 0, // PC_ICBI
IU, 1, 1, 0, 0, 0, // PC_MCRFS
IU, 1, 1, 0, 0, 0, // PC_MCRXR
IU, 1, 1, 0, 0, 0, // PC_MFTB
IU, 1, 1, 0, 0, 0, // PC_MFSR
IU, 1, 1, 0, 0, 0, // PC_MTSR
IU, 1, 1, 0, 0, 0, // PC_MFSRIN
IU, 1, 1, 0, 0, 0, // PC_MTSRIN
IU, 1, 1, 0, 0, 0, // PC_MTFSB0
IU, 1, 1, 0, 0, 0, // PC_MTFSB1
IU, 1, 1, 0, 0, 0, // PC_MTFSFI
IU, 1, 1, 0, 0, 1, // PC_SC
FPU1, 1, 1, 0, 0, 0, // PC_FSQRT
FPU1, 1, 1, 0, 0, 0, // PC_FSQRTS
IU, 1, 1, 0, 0, 0, // PC_TLBIA
IU, 1, 1, 0, 0, 0, // PC_TLBIE
IU, 1, 1, 0, 0, 0, // PC_TLBLD
IU, 1, 1, 0, 0, 0, // PC_TLBLI
IU, 1, 1, 0, 0, 0, // PC_TLBSYNC
IU, 1, 1, 0, 0, 1, // PC_TW
IU, 1, 1, 0, 0, 1, // PC_TRAP
IU, 1, 1, 0, 0, 1, // PC_TWI
IU, 1, 1, 0, 0, 1, // PC_OPWORD
IU, 1, 1, 0, 0, 0, // PC_MFROM
IU, 1, 1, 0, 0, 1, // PC_DSA
IU, 1, 1, 0, 0, 1, // PC_ESA
IU, 0, 0, 0, 0, 0, // PC_DCCCI
IU, 0, 0, 0, 0, 0, // PC_DCREAD
IU, 0, 0, 0, 0, 0, // PC_ICBT
IU, 0, 0, 0, 0, 0, // PC_ICCCI
IU, 0, 0, 0, 0, 0, // PC_ICREAD
IU, 0, 0, 0, 0, 0, // PC_RFCI
IU, 0, 0, 0, 0, 0, // PC_TLBRE
IU, 0, 0, 0, 0, 0, // PC_TLBSX
IU, 0, 0, 0, 0, 0, // PC_TLBWE
IU, 0, 0, 0, 0, 0, // PC_WRTEE
IU, 0, 0, 0, 0, 0, // PC_WRTEEI
IU, 0, 0, 0, 0, 0, // PC_MFDCR
IU, 0, 0, 0, 0, 0, // PC_MTDCR
IU, 0, 0, 0, 0, 0, // PC_DCBA
BPU, 0, 0, 0, 0, 0, // PC_DSS
BPU, 0, 0, 0, 0, 0, // PC_DSSALL
BPU, 0, 0, 0, 0, 0, // PC_DST
BPU, 0, 0, 0, 0, 0, // PC_DSTT
BPU, 0, 0, 0, 0, 0, // PC_DSTST
BPU, 0, 0, 0, 0, 0, // PC_DSTSTT
BPU, 0, 0, 0, 0, 0, // PC_LVEBX
BPU, 0, 0, 0, 0, 0, // PC_LVEHX
BPU, 0, 0, 0, 0, 0, // PC_LVEWX
BPU, 0, 0, 0, 0, 0, // PC_LVSL
BPU, 0, 0, 0, 0, 0, // PC_LVSR
BPU, 0, 0, 0, 0, 0, // PC_LVX
BPU, 0, 0, 0, 0, 0, // PC_LVXL
BPU, 0, 0, 0, 0, 0, // PC_STVEBX
BPU, 0, 0, 0, 0, 0, // PC_STVEHX
BPU, 0, 0, 0, 0, 0, // PC_STVEWX
BPU, 0, 0, 0, 0, 0, // PC_STVX
BPU, 0, 0, 0, 0, 0, // PC_STVXL
BPU, 0, 0, 0, 0, 0, // PC_MFVSCR
BPU, 0, 0, 0, 0, 0, // PC_MTVSCR
BPU, 0, 0, 0, 0, 0, // PC_VADDCUW
BPU, 0, 0, 0, 0, 0, // PC_VADDFP
BPU, 0, 0, 0, 0, 0, // PC_VADDSBS
BPU, 0, 0, 0, 0, 0, // PC_VADDSHS
BPU, 0, 0, 0, 0, 0, // PC_VADDSWS
BPU, 0, 0, 0, 0, 0, // PC_VADDUBM
BPU, 0, 0, 0, 0, 0, // PC_VADDUBS
BPU, 0, 0, 0, 0, 0, // PC_VADDUHM
BPU, 0, 0, 0, 0, 0, // PC_VADDUHS
BPU, 0, 0, 0, 0, 0, // PC_VADDUWM
BPU, 0, 0, 0, 0, 0, // PC_VADDUWS
BPU, 0, 0, 0, 0, 0, // PC_VAND
BPU, 0, 0, 0, 0, 0, // PC_VANDC
BPU, 0, 0, 0, 0, 0, // PC_VAVGSB
BPU, 0, 0, 0, 0, 0, // PC_VAVGSH
BPU, 0, 0, 0, 0, 0, // PC_VAVGSW
BPU, 0, 0, 0, 0, 0, // PC_VAVGUB
BPU, 0, 0, 0, 0, 0, // PC_VAVGUH
BPU, 0, 0, 0, 0, 0, // PC_VAVGUW
BPU, 0, 0, 0, 0, 0, // PC_VCFSX
BPU, 0, 0, 0, 0, 0, // PC_VCFUX
BPU, 0, 0, 0, 0, 0, // PC_VCMPBFP
BPU, 0, 0, 0, 0, 0, // PC_VCMPEQFP
BPU, 0, 0, 0, 0, 0, // PC_VCMPEQUB
BPU, 0, 0, 0, 0, 0, // PC_VCMPEQUH
BPU, 0, 0, 0, 0, 0, // PC_VCMPEQUW
BPU, 0, 0, 0, 0, 0, // PC_VCMPGEFP
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTFP
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTSB
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTSH
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTSW
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTUB
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTUH
BPU, 0, 0, 0, 0, 0, // PC_VCMPGTUW
BPU, 0, 0, 0, 0, 0, // PC_VCTSXS
BPU, 0, 0, 0, 0, 0, // PC_VCTUXS
BPU, 0, 0, 0, 0, 0, // PC_VEXPTEFP
BPU, 0, 0, 0, 0, 0, // PC_VLOGEFP
BPU, 0, 0, 0, 0, 0, // PC_VMAXFP
BPU, 0, 0, 0, 0, 0, // PC_VMAXSB
BPU, 0, 0, 0, 0, 0, // PC_VMAXSH
BPU, 0, 0, 0, 0, 0, // PC_VMAXSW
BPU, 0, 0, 0, 0, 0, // PC_VMAXUB
BPU, 0, 0, 0, 0, 0, // PC_VMAXUH
BPU, 0, 0, 0, 0, 0, // PC_VMAXUW
BPU, 0, 0, 0, 0, 0, // PC_VMINFP
BPU, 0, 0, 0, 0, 0, // PC_VMINSB
BPU, 0, 0, 0, 0, 0, // PC_VMINSH
BPU, 0, 0, 0, 0, 0, // PC_VMINSW
BPU, 0, 0, 0, 0, 0, // PC_VMINUB
BPU, 0, 0, 0, 0, 0, // PC_VMINUH
BPU, 0, 0, 0, 0, 0, // PC_VMINUW
BPU, 0, 0, 0, 0, 0, // PC_VMRGHB
BPU, 0, 0, 0, 0, 0, // PC_VMRGHH
BPU, 0, 0, 0, 0, 0, // PC_VMRGHW
BPU, 0, 0, 0, 0, 0, // PC_VMRGLB
BPU, 0, 0, 0, 0, 0, // PC_VMRGLH
BPU, 0, 0, 0, 0, 0, // PC_VMRGLW
BPU, 0, 0, 0, 0, 0, // PC_VMULESB
BPU, 0, 0, 0, 0, 0, // PC_VMULESH
BPU, 0, 0, 0, 0, 0, // PC_VMULEUB
BPU, 0, 0, 0, 0, 0, // PC_VMULEUH
BPU, 0, 0, 0, 0, 0, // PC_VMULOSB
BPU, 0, 0, 0, 0, 0, // PC_VMULOSH
BPU, 0, 0, 0, 0, 0, // PC_VMULOUB
BPU, 0, 0, 0, 0, 0, // PC_VMULOUH
BPU, 0, 0, 0, 0, 0, // PC_VNOR
BPU, 0, 0, 0, 0, 0, // PC_VOR
BPU, 0, 0, 0, 0, 0, // PC_VPKPX
BPU, 0, 0, 0, 0, 0, // PC_VPKSHSS
BPU, 0, 0, 0, 0, 0, // PC_VPKSHUS
BPU, 0, 0, 0, 0, 0, // PC_VPKSWSS
BPU, 0, 0, 0, 0, 0, // PC_VPKSWUS
BPU, 0, 0, 0, 0, 0, // PC_VPKUHUM
BPU, 0, 0, 0, 0, 0, // PC_VPKUHUS
BPU, 0, 0, 0, 0, 0, // PC_VPKUWUM
BPU, 0, 0, 0, 0, 0, // PC_VPKUWUS
BPU, 0, 0, 0, 0, 0, // PC_VREFP
BPU, 0, 0, 0, 0, 0, // PC_VRFIM
BPU, 0, 0, 0, 0, 0, // PC_VRFIN
BPU, 0, 0, 0, 0, 0, // PC_VRFIP
BPU, 0, 0, 0, 0, 0, // PC_VRFIZ
BPU, 0, 0, 0, 0, 0, // PC_VRLB
BPU, 0, 0, 0, 0, 0, // PC_VRLH
BPU, 0, 0, 0, 0, 0, // PC_VRLW
BPU, 0, 0, 0, 0, 0, // PC_VRSQRTEFP
BPU, 0, 0, 0, 0, 0, // PC_VSL
BPU, 0, 0, 0, 0, 0, // PC_VSLB
BPU, 0, 0, 0, 0, 0, // PC_VSLH
BPU, 0, 0, 0, 0, 0, // PC_VSLO
BPU, 0, 0, 0, 0, 0, // PC_VSLW
BPU, 0, 0, 0, 0, 0, // PC_VSPLTB
BPU, 0, 0, 0, 0, 0, // PC_VSPLTH
BPU, 0, 0, 0, 0, 0, // PC_VSPLTW
BPU, 0, 0, 0, 0, 0, // PC_VSPLTISB
BPU, 0, 0, 0, 0, 0, // PC_VSPLTISH
BPU, 0, 0, 0, 0, 0, // PC_VSPLTISW
BPU, 0, 0, 0, 0, 0, // PC_VSR
BPU, 0, 0, 0, 0, 0, // PC_VSRAB
BPU, 0, 0, 0, 0, 0, // PC_VSRAH
BPU, 0, 0, 0, 0, 0, // PC_VSRAW
BPU, 0, 0, 0, 0, 0, // PC_VSRB
BPU, 0, 0, 0, 0, 0, // PC_VSRH
BPU, 0, 0, 0, 0, 0, // PC_VSRO
BPU, 0, 0, 0, 0, 0, // PC_VSRW
BPU, 0, 0, 0, 0, 0, // PC_VSUBCUW
BPU, 0, 0, 0, 0, 0, // PC_VSUBFP
BPU, 0, 0, 0, 0, 0, // PC_VSUBSBS
BPU, 0, 0, 0, 0, 0, // PC_VSUBSHS
BPU, 0, 0, 0, 0, 0, // PC_VSUBSWS
BPU, 0, 0, 0, 0, 0, // PC_VSUBUBM
BPU, 0, 0, 0, 0, 0, // PC_VSUBUBS
BPU, 0, 0, 0, 0, 0, // PC_VSUBUHM
BPU, 0, 0, 0, 0, 0, // PC_VSUBUHS
BPU, 0, 0, 0, 0, 0, // PC_VSUBUWM
BPU, 0, 0, 0, 0, 0, // PC_VSUBUWS
BPU, 0, 0, 0, 0, 0, // PC_VSUMSWS
BPU, 0, 0, 0, 0, 0, // PC_VSUM2SWS
BPU, 0, 0, 0, 0, 0, // PC_VSUM4SBS
BPU, 0, 0, 0, 0, 0, // PC_VSUM4SHS
BPU, 0, 0, 0, 0, 0, // PC_VSUM4UBS
BPU, 0, 0, 0, 0, 0, // PC_VUPKHPX
BPU, 0, 0, 0, 0, 0, // PC_VUPKHSB
BPU, 0, 0, 0, 0, 0, // PC_VUPKHSH
BPU, 0, 0, 0, 0, 0, // PC_VUPKLPX
BPU, 0, 0, 0, 0, 0, // PC_VUPKLSB
BPU, 0, 0, 0, 0, 0, // PC_VUPKLSH
BPU, 0, 0, 0, 0, 0, // PC_VXOR
BPU, 0, 0, 0, 0, 0, // PC_VMADDFP
BPU, 0, 0, 0, 0, 0, // PC_VMHADDSHS
BPU, 0, 0, 0, 0, 0, // PC_VMHRADDSHS
BPU, 0, 0, 0, 0, 0, // PC_VMLADDUHM
BPU, 0, 0, 0, 0, 0, // PC_VMSUMMBM
BPU, 0, 0, 0, 0, 0, // PC_VMSUMSHM
BPU, 0, 0, 0, 0, 0, // PC_VMSUMSHS
BPU, 0, 0, 0, 0, 0, // PC_VMSUMUBM
BPU, 0, 0, 0, 0, 0, // PC_VMSUMUHM
BPU, 0, 0, 0, 0, 0, // PC_VMSUMUHS
BPU, 0, 0, 0, 0, 0, // PC_VNMSUBFP
BPU, 0, 0, 0, 0, 0, // PC_VPERM
BPU, 0, 0, 0, 0, 0, // PC_VSEL
BPU, 0, 0, 0, 0, 0, // PC_VSLDOI
BPU, 0, 0, 0, 0, 0, // PC_VMR
BPU, 0, 0, 0, 0, 0, // PC_VMRP
BPU, 0, 0, 0, 0, 0, // PC_SLE
BPU, 0, 0, 0, 0, 0, // PC_SLEQ
BPU, 0, 0, 0, 0, 0, // PC_SLIQ
BPU, 0, 0, 0, 0, 0, // PC_SLLIQ
BPU, 0, 0, 0, 0, 0, // PC_SLLQ
BPU, 0, 0, 0, 0, 0, // PC_SLQ
BPU, 0, 0, 0, 0, 0, // PC_SRAIQ
BPU, 0, 0, 0, 0, 0, // PC_SRAQ
BPU, 0, 0, 0, 0, 0, // PC_SRE
BPU, 0, 0, 0, 0, 0, // PC_SREA
BPU, 0, 0, 0, 0, 0, // PC_SREQ
BPU, 0, 0, 0, 0, 0, // PC_SRIQ
BPU, 0, 0, 0, 0, 0, // PC_SRLIQ
BPU, 0, 0, 0, 0, 0, // PC_SRLQ
BPU, 0, 0, 0, 0, 0, // PC_SRQ
BPU, 0, 0, 0, 0, 0, // PC_MASKG
BPU, 0, 0, 0, 0, 0, // PC_MASKIR
BPU, 0, 0, 0, 0, 0, // PC_LSCBX
BPU, 0, 0, 0, 0, 0, // PC_DIV
BPU, 0, 0, 0, 0, 0, // PC_DIVS
BPU, 0, 0, 0, 0, 0, // PC_DOZ
BPU, 0, 0, 0, 0, 0, // PC_MUL
BPU, 0, 0, 0, 0, 0, // PC_NABS
BPU, 0, 0, 0, 0, 0, // PC_ABS
BPU, 0, 0, 0, 0, 0, // PC_CLCS
BPU, 0, 0, 0, 0, 0, // PC_DOZI
BPU, 0, 0, 0, 0, 0, // PC_RLMI
BPU, 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;
}
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 = 5;
completionbuffers.used = 0;
completionbuffers.nextToRetire = 0;
completionbuffers.nextFreeSlot = 0;
for (i = 0; i < MaxEntries; i++)
completionbuffers.entries[i].instr = NULL;
}
static int can_issue(PCode *instr) {
if (completionbuffers.free == 0)
return 0;
if (pipeline[instruction_timing[instr->op].stage].instr)
return 0;
if ((instr->flags & fIsWrite) && pipeline[LSU2].instr && (pipeline[LSU2].instr->flags & fIsWrite))
return 0;
return 1;
}
static void issue(PCode *instr) {
int stage = instruction_timing[instr->op].stage;
int cycles = instruction_timing[instr->op].cycles[0];
assign_completion_buffer(instr);
pipeline[stage].instr = instr;
pipeline[stage].remaining = cycles;
}
static void advance_clock(void) {
int stage;
for (stage = 0; stage < NumStages; stage++) {
if (pipeline[stage].instr && pipeline[stage].remaining)
--pipeline[stage].remaining;
}
if (completionbuffers.used && completionbuffers.entries[completionbuffers.nextToRetire].completed) {
retire_instruction();
if (completionbuffers.used && completionbuffers.entries[completionbuffers.nextToRetire].completed) {
retire_instruction();
}
}
if (pipeline[IU].instr && pipeline[IU].remaining == 0)
complete_instruction(IU);
if (pipeline[LSU2].instr && pipeline[LSU2].remaining == 0)
complete_instruction(LSU2);
if (pipeline[FPU3].instr && pipeline[FPU3].remaining == 0)
complete_instruction(FPU3);
if (pipeline[SRU].instr && pipeline[SRU].remaining == 0)
complete_instruction(SRU);
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 machine603 = {
2,
1,
0,
&latency,
&initialize,
&can_issue,
&issue,
&advance_clock,
&serializes,
&default_uses_vpermute_unit
};
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