Documentation
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Index ¶
- Constants
- Variables
- func ADR(p uint32, o uint32, rt uint32) uint32
- func DRconv(a int) string
- func FPCCMP(m uint32, s uint32, type_ uint32, op uint32) uint32
- func FPCMP(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32
- func FPCVTI(sf uint32, s uint32, type_ uint32, rmode uint32, op uint32) uint32
- func FPOP1S(m uint32, s uint32, type_ uint32, op uint32) uint32
- func FPOP2S(m uint32, s uint32, type_ uint32, op uint32) uint32
- func LD2STR(o uint32) uint32
- func LDSTR12U(sz uint32, v uint32, opc uint32) uint32
- func LDSTR9S(sz uint32, v uint32, opc uint32) uint32
- func LDSTX(sz uint32, o2 uint32, l uint32, o1 uint32, o0 uint32) uint32
- func OPBIT(x uint32) uint32
- func OPBLR(x uint32) uint32
- func OPBcc(x uint32) uint32
- func OPDP2(x uint32) uint32
- func OPDP3(sf uint32, op54 uint32, op31 uint32, o0 uint32) uint32
- func Rconv(r int) string
- func SYSARG4(op1 int, Cn int, Cm int, op2 int) int
- func SYSARG5(op0 int, op1 int, Cn int, Cm int, op2 int) int
- func SYSHINT(x uint32) uint32
- func SYSOP(l uint32, op0 uint32, op1 uint32, crn uint32, crm uint32, op2 uint32, ...) uint32
- type Oprange
- type Optab
- Bugs
Constants ¶
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const ( NSNAME = 8 NSYM = 50 NREG = 32 /* number of general registers */ NFREG = 32 /* number of floating point registers */ )
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const ( // integer REG_R0 = obj.RBaseARM64 + iota REG_R1 REG_R2 REG_R3 REG_R4 REG_R5 REG_R6 REG_R7 REG_R8 REG_R9 REG_R10 REG_R11 REG_R12 REG_R13 REG_R14 REG_R15 REG_R16 REG_R17 REG_R18 REG_R19 REG_R20 REG_R21 REG_R22 REG_R23 REG_R24 REG_R25 REG_R26 REG_R27 REG_R28 REG_R29 REG_R30 REG_R31 // scalar floating point REG_F0 REG_F1 REG_F2 REG_F3 REG_F4 REG_F5 REG_F6 REG_F7 REG_F8 REG_F9 REG_F10 REG_F11 REG_F12 REG_F13 REG_F14 REG_F15 REG_F16 REG_F17 REG_F18 REG_F19 REG_F20 REG_F21 REG_F22 REG_F23 REG_F24 REG_F25 REG_F26 REG_F27 REG_F28 REG_F29 REG_F30 REG_F31 // SIMD REG_V0 REG_V1 REG_V2 REG_V3 REG_V4 REG_V5 REG_V6 REG_V7 REG_V8 REG_V9 REG_V10 REG_V11 REG_V12 REG_V13 REG_V14 REG_V15 REG_V16 REG_V17 REG_V18 REG_V19 REG_V20 REG_V21 REG_V22 REG_V23 REG_V24 REG_V25 REG_V26 REG_V27 REG_V28 REG_V29 REG_V30 REG_V31 // The EQ in // CSET EQ, R0 // is encoded as TYPE_REG, even though it's not really a register. COND_EQ COND_NE COND_HS COND_LO COND_MI COND_PL COND_VS COND_VC COND_HI COND_LS COND_GE COND_LT COND_GT COND_LE COND_AL COND_NV REG_RSP = REG_V31 + 32 // to differentiate ZR/SP, REG_RSP&0x1f = 31 )
General purpose registers, kept in the low bits of Prog.Reg.
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const ( REG_UXTB = REG_EXT + iota<<8 REG_UXTH REG_UXTW REG_UXTX REG_SXTB REG_SXTH REG_SXTW REG_SXTX )
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const ( REG_SPECIAL = obj.RBaseARM64 + 1<<12 + iota REG_DAIF REG_NZCV REG_FPSR REG_FPCR REG_SPSR_EL1 REG_ELR_EL1 REG_SPSR_EL2 REG_ELR_EL2 REG_CurrentEL REG_SP_EL0 REG_SPSel REG_DAIFSet REG_DAIFClr )
Special registers, after subtracting obj.RBaseARM64, bit 12 indicates a special register and the low bits select the register.
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const ( REGMIN = REG_R7 // register variables allocated from here to REGMAX REGRT1 = REG_R16 // ARM64 IP0, for external linker, runtime, duffzero and duffcopy REGRT2 = REG_R17 // ARM64 IP1, for external linker, runtime, duffcopy REGPR = REG_R18 // ARM64 platform register, unused in the Go toolchain REGMAX = REG_R25 REGCTXT = REG_R26 // environment for closures REGTMP = REG_R27 // reserved for liblink REGG = REG_R28 // G REGFP = REG_R29 // frame pointer, unused in the Go toolchain REGLINK = REG_R30 // ARM64 uses R31 as both stack pointer and zero register, // depending on the instruction. To differentiate RSP from ZR, // we use a different numeric value for REGZERO and REGSP. REGZERO = REG_R31 REGSP = REG_RSP FREGRET = REG_F0 FREGMIN = REG_F7 // first register variable FREGMAX = REG_F26 // last register variable for 7g only FREGEXT = REG_F26 // first external register FREGZERO = REG_F28 // both float and double FREGHALF = REG_F29 // double FREGONE = REG_F30 // double FREGTWO = REG_F31 // double )
Register assignments:
compiler allocates R0 up as temps compiler allocates register variables R7-R25 compiler allocates external registers R26 down
compiler allocates register variables F7-F26 compiler allocates external registers F26 down
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const ( /* mark flags */ LABEL = 1 << iota LEAF FLOAT BRANCH LOAD FCMP SYNC LIST FOLL NOSCHED )
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const ( C_NONE = iota C_REG // R0..R30 C_RSP // R0..R30, RSP C_FREG // F0..F31 C_VREG // V0..V31 C_PAIR // (Rn, Rm) C_SHIFT // Rn<<2 C_EXTREG // Rn.UXTB<<3 C_SPR // REG_NZCV C_COND // EQ, NE, etc C_ZCON // $0 or ZR C_ADDCON0 // 12-bit unsigned, unshifted C_ADDCON // 12-bit unsigned, shifted left by 0 or 12 C_MOVCON // generated by a 16-bit constant, optionally inverted and/or shifted by multiple of 16 C_BITCON // bitfield and logical immediate masks C_ABCON // could be C_ADDCON or C_BITCON C_MBCON // could be C_MOVCON or C_BITCON C_LCON // 32-bit constant C_VCON // 64-bit constant C_FCON // floating-point constant C_VCONADDR // 64-bit memory address C_AACON // ADDCON offset in auto constant $a(FP) C_LACON // 32-bit offset in auto constant $a(FP) C_AECON // ADDCON offset in extern constant $e(SB) // TODO(aram): only one branch class should be enough C_SBRA // for TYPE_BRANCH C_LBRA C_NPAUTO // -512 <= x < 0, 0 mod 8 C_NSAUTO // -256 <= x < 0 C_PSAUTO // 0 to 255 C_PPAUTO // 0 to 504, 0 mod 8 C_UAUTO4K // 0 to 4095 C_UAUTO8K // 0 to 8190, 0 mod 2 C_UAUTO16K // 0 to 16380, 0 mod 4 C_UAUTO32K // 0 to 32760, 0 mod 8 C_UAUTO64K // 0 to 65520, 0 mod 16 C_LAUTO // any other 32-bit constant C_SEXT1 // 0 to 4095, direct C_SEXT2 // 0 to 8190 C_SEXT4 // 0 to 16380 C_SEXT8 // 0 to 32760 C_SEXT16 // 0 to 65520 C_LEXT // TODO(aram): s/AUTO/INDIR/ C_ZOREG // 0(R) C_NPOREG // mirror NPAUTO, etc C_NSOREG C_PSOREG C_PPOREG C_UOREG4K C_UOREG8K C_UOREG16K C_UOREG32K C_UOREG64K C_LOREG C_ADDR // TODO(aram): explain difference from C_VCONADDR C_ROFF // register offset (including register extended) C_GOK C_TEXTSIZE C_NCLASS // must be last )
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const ( C_XPRE = 1 << 6 // match arm.C_WBIT, so Prog.String know how to print it C_XPOST = 1 << 5 // match arm.C_PBIT, so Prog.String know how to print it )
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const ( AADC = obj.ABaseARM64 + obj.A_ARCHSPECIFIC + iota AADCS AADCSW AADCW AADD AADDS AADDSW AADDW AADR AADRP AAND AANDS AANDSW AANDW AASR AASRW AAT ABFI ABFIW ABFM ABFMW ABFXIL ABFXILW ABIC ABICS ABICSW ABICW ABRK ACBNZ ACBNZW ACBZ ACBZW ACCMN ACCMNW ACCMP ACCMPW ACINC ACINCW ACINV ACINVW ACLREX ACLS ACLSW ACLZ ACLZW ACMN ACMNW ACMP ACMPW ACNEG ACNEGW ACRC32B ACRC32CB ACRC32CH ACRC32CW ACRC32CX ACRC32H ACRC32W ACRC32X ACSEL ACSELW ACSET ACSETM ACSETMW ACSETW ACSINC ACSINCW ACSINV ACSINVW ACSNEG ACSNEGW ADC ADCPS1 ADCPS2 ADCPS3 ADMB ADRPS ADSB AEON AEONW AEOR AEORW AERET AEXTR AEXTRW AHINT AHLT AHVC AIC AISB ALDAR ALDARB ALDARH ALDARW ALDAXP ALDAXPW ALDAXR ALDAXRB ALDAXRH ALDAXRW ALDP ALDXR ALDXRB ALDXRH ALDXRW ALDXP ALDXPW ALSL ALSLW ALSR ALSRW AMADD AMADDW AMNEG AMNEGW AMOVK AMOVKW AMOVN AMOVNW AMOVZ AMOVZW AMRS AMSR AMSUB AMSUBW AMUL AMULW AMVN AMVNW ANEG ANEGS ANEGSW ANEGW ANGC ANGCS ANGCSW ANGCW AORN AORNW AORR AORRW APRFM APRFUM ARBIT ARBITW AREM AREMW AREV AREV16 AREV16W AREV32 AREVW AROR ARORW ASBC ASBCS ASBCSW ASBCW ASBFIZ ASBFIZW ASBFM ASBFMW ASBFX ASBFXW ASDIV ASDIVW ASEV ASEVL ASMADDL ASMC ASMNEGL ASMSUBL ASMULH ASMULL ASTXR ASTXRB ASTXRH ASTXP ASTXPW ASTXRW ASTLP ASTLPW ASTLR ASTLRB ASTLRH ASTLRW ASTLXP ASTLXPW ASTLXR ASTLXRB ASTLXRH ASTLXRW ASTP ASUB ASUBS ASUBSW ASUBW ASVC ASXTB ASXTBW ASXTH ASXTHW ASXTW ASYS ASYSL ATBNZ ATBZ ATLBI ATST ATSTW AUBFIZ AUBFIZW AUBFM AUBFMW AUBFX AUBFXW AUDIV AUDIVW AUMADDL AUMNEGL AUMSUBL AUMULH AUMULL AUREM AUREMW AUXTB AUXTH AUXTW AUXTBW AUXTHW AWFE AWFI AYIELD AMOVB AMOVBU AMOVH AMOVHU AMOVW AMOVWU AMOVD AMOVNP AMOVNPW AMOVP AMOVPD AMOVPQ AMOVPS AMOVPSW AMOVPW ABEQ ABNE ABCS ABHS ABCC ABLO ABMI ABPL ABVS ABVC ABHI ABLS ABGE ABLT ABGT ABLE AFABSD AFABSS AFADDD AFADDS AFCCMPD AFCCMPED AFCCMPS AFCCMPES AFCMPD AFCMPED AFCMPES AFCMPS AFCVTSD AFCVTDS AFCVTZSD AFCVTZSDW AFCVTZSS AFCVTZSSW AFCVTZUD AFCVTZUDW AFCVTZUS AFCVTZUSW AFDIVD AFDIVS AFMOVD AFMOVS AFMULD AFMULS AFNEGD AFNEGS AFSQRTD AFSQRTS AFSUBD AFSUBS ASCVTFD ASCVTFS ASCVTFWD ASCVTFWS AUCVTFD AUCVTFS AUCVTFWD AUCVTFWS AHISTORY ANAME AWORD ADYNT AINIT ABCASE ACASE ADWORD ASIGNAME AGOK AEND AFCSELS AFCSELD AFMAXS AFMINS AFMAXD AFMIND AFMAXNMS AFMAXNMD AFNMULS AFNMULD AFRINTNS AFRINTND AFRINTPS AFRINTPD AFRINTMS AFRINTMD AFRINTZS AFRINTZD AFRINTAS AFRINTAD AFRINTXS AFRINTXD AFRINTIS AFRINTID AFMADDS AFMADDD AFMSUBS AFMSUBD AFNMADDS AFNMADDD AFNMSUBS AFNMSUBD AFMINNMS AFMINNMD AFCVTDH AFCVTHS AFCVTHD AFCVTSH AAESD AAESE AAESIMC AAESMC ASHA1C ASHA1H ASHA1M ASHA1P ASHA1SU0 ASHA1SU1 ASHA256H ASHA256H2 ASHA256SU0 ASHA256SU1 ALAST AB = obj.AJMP ABL = obj.ACALL )
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const ( S32 = 0 << 31 S64 = 1 << 31 Sbit = 1 << 29 LSL0_32 = 2 << 13 LSL0_64 = 3 << 13 )
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const ( LFROM = 1 << 0 LTO = 1 << 1 LPOOL = 1 << 2 )
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const (
BIG = 2048 - 8
)
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const (
FuncAlign = 16
)
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const (
REGFROM = 1
)
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const REG_EXT = obj.RBaseARM64 + 1<<11
Not registers, but flags that can be combined with regular register constants to indicate extended register conversion. When checking, you should subtract obj.RBaseARM64 first. From this difference, bit 11 indicates extended register, bits 8-10 select the conversion mode.
Variables ¶
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var Anames = []string{}/* 370 elements not displayed */
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var Linkarm64 = obj.LinkArch{ ByteOrder: binary.LittleEndian, Name: "arm64", Thechar: '7', Preprocess: preprocess, Assemble: span7, Follow: follow, Progedit: progedit, UnaryDst: unaryDst, Minlc: 4, Ptrsize: 8, Regsize: 8, }
Functions ¶
Types ¶
Notes ¶
Bugs ¶
how to correctly handle line number for constant pool entries? for now, we set line number to the last instruction preceding them at least this won't bloat the .debug_line tables
Source Files
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