ref: 63191949b911658c3774e727061fcf166ad9ace2
dir: /sys/src/9/bcm64/cache.v8.s/
#include "sysreg.h" #undef SYSREG #define SYSREG(op0,op1,Cn,Cm,op2) SPR(((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)) /* * instruction cache operations */ TEXT cacheiinvse(SB), 1, $-4 MOVWU len+8(FP), R2 ADD R0, R2 MRS DAIF, R11 MSR $0x2, DAIFSet MOVWU $1, R10 MSR R10, CSSELR_EL1 ISB $SY MRS CCSIDR_EL1, R4 ANDW $7, R4 ADDW $4, R4 // log2(linelen) LSL R4, R10 LSR R4, R0 LSL R4, R0 _iinvse: IC R0, 3,7,5,1 // IVAU ADD R10, R0 CMP R0, R2 BGT _iinvse DSB $NSH ISB $SY MSR R11, DAIF RETURN TEXT cacheiinv(SB), 1, $-4 IC R0, 0,7,5,0 // IALLU DSB $NSH ISB $SY RETURN TEXT cacheuwbinv(SB), 1, $0 BL cachedwbinv(SB) BL cacheiinv(SB) RETURN /* * data cache operations */ TEXT cachedwbse(SB), 1, $-4 MOV LR, R29 BL cachedva<>(SB) TEXT dccvac(SB), 1, $-4 DC R0, 3,7,10,1 // CVAC RETURN TEXT cacheduwbse(SB), 1, $-4 MOV LR, R29 BL cachedva<>(SB) TEXT dccvau(SB), 1, $-4 DC R0, 3,7,11,1 // CVAU RETURN TEXT cachedinvse(SB), 1, $-4 MOV LR, R29 BL cachedva<>(SB) TEXT dcivac(SB), 1, $-4 DC R0, 0,7,6,1 // IVAC RETURN TEXT cachedwbinvse(SB), 1, $-4 MOV LR, R29 BL cachedva<>(SB) TEXT dccivac(SB), 1, $-4 DC R0, 3,7,14,1 // CIVAC RETURN TEXT cachedva<>(SB), 1, $-4 MOV LR, R1 MOVWU len+8(FP), R2 ADD R0, R2 MRS DAIF, R11 MSR $0x2, DAIFSet MOVWU $0, R10 MSR R10, CSSELR_EL1 ISB $SY MRS CCSIDR_EL1, R4 ANDW $7, R4 ADDW $4, R4 // log2(linelen) MOVWU $1, R10 LSL R4, R10 LSR R4, R0 LSL R4, R0 DSB $SY ISB $SY _cachedva: BL (R1) ADD R10, R0 CMP R0, R2 BGT _cachedva DSB $SY ISB $SY MSR R11, DAIF RET R29 /* * l1 cache operations */ TEXT cachedwb(SB), 1, $-4 MOVWU $0, R0 _cachedwb: MOV LR, R29 BL cachedsw<>(SB) TEXT dccsw(SB), 1, $-4 DC R0, 0,7,10,2 // CSW RETURN TEXT cachedinv(SB), 1, $-4 MOVWU $0, R0 _cachedinv: MOV LR, R29 BL cachedsw<>(SB) TEXT dcisw(SB), 1, $-4 DC R0, 0,7,6,2 // ISW RETURN TEXT cachedwbinv(SB), 1, $-4 MOVWU $0, R0 _cachedwbinv: MOV LR, R29 BL cachedsw<>(SB) TEXT dccisw(SB), 1, $-4 DC R0, 0,7,14,2 // CISW RETURN /* * l2 cache operations */ TEXT l2cacheuwb(SB), 1, $-4 MOVWU $1, R0 B _cachedwb TEXT l2cacheuinv(SB), 1, $-4 MOVWU $1, R0 B _cachedinv TEXT l2cacheuwbinv(SB), 1, $-4 MOVWU $1, R0 B _cachedwbinv TEXT cachesize(SB), 1, $-4 MRS DAIF, R11 MSR $0x2, DAIFSet MSR R0, CSSELR_EL1 ISB $SY MRS CCSIDR_EL1, R0 MSR R11, DAIF RETURN TEXT cachedsw<>(SB), 1, $-4 MOV LR, R1 MRS DAIF, R11 MSR $0x2, DAIFSet ADDW R0, R0, R8 MSR R8, CSSELR_EL1 ISB $SY MRS CCSIDR_EL1, R4 LSR $3, R4, R7 ANDW $1023, R7 // lastway ADDW $1, R7, R5 // #ways LSR $13, R4, R2 ANDW $32767, R2 // lastset ADDW $1, R2 // #sets ANDW $7, R4 ADDW $4, R4 // log2(linelen) MOVWU $32, R3 // wayshift = 32 - log2(#ways) _countlog2ways: CBZ R7, _loop // lastway == 0? LSR $1, R7 // lastway >>= 1 SUB $1, R3 // wayshift-- B _countlog2ways _loop: DSB $SY ISB $SY _nextway: MOVWU $0, R6 // set _nextset: LSL R3, R7, R0 // way<<wayshift LSL R4, R6, R9 // set<<log2(linelen) ORRW R8, R0 // level ORRW R9, R0 // setway BL (R1) // op(setway) ADDW $1, R6 // set++ CMPW R2, R6 BLT _nextset ADDW $1, R7 // way++ CMPW R5, R7 BLT _nextway DSB $SY ISB $SY MSR R11, DAIF RET R29