arm64

package standard library
go1.19.10 Latest Latest
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 Go to latest Published: Jun 6, 2023 License: BSD-3-Clause Imports: 10 Imported by: 0

Documentation

Overview

Package arm64 implements an ARM64 assembler. Go assembly syntax is different from GNU ARM64 syntax, but we can still follow the general rules to map between them.

Instructions mnemonics mapping rules

1. Most instructions use width suffixes of instruction names to indicate operand width rather than using different register names.

Examples: 

ADC R24, R14, R12          <=>     adc x12, x24
ADDW R26->24, R21, R15     <=>     add w15, w21, w26, asr #24
FCMPS F2, F3               <=>     fcmp s3, s2
FCMPD F2, F3               <=>     fcmp d3, d2
FCVTDH F2, F3              <=>     fcvt h3, d2

2. Go uses .P and .W suffixes to indicate post-increment and pre-increment.

Examples: 

MOVD.P -8(R10), R8         <=>      ldr x8, [x10],#-8
MOVB.W 16(R16), R10        <=>      ldrsb x10, [x16,#16]!
MOVBU.W 16(R16), R10       <=>      ldrb x10, [x16,#16]!

3. Go uses a series of MOV instructions as load and store.

64-bit variant ldr, str, stur => MOVD; 32-bit variant str, stur, ldrsw => MOVW; 32-bit variant ldr => MOVWU; ldrb => MOVBU; ldrh => MOVHU; ldrsb, sturb, strb => MOVB; ldrsh, sturh, strh => MOVH.

4. Go moves conditions into opcode suffix, like BLT.

5. Go adds a V prefix for most floating-point and SIMD instructions, except cryptographic extension instructions and floating-point(scalar) instructions.

Examples: 

VADD V5.H8, V18.H8, V9.H8         <=>      add v9.8h, v18.8h, v5.8h
VLD1.P (R6)(R11), [V31.D1]        <=>      ld1 {v31.1d}, [x6], x11
VFMLA V29.S2, V20.S2, V14.S2      <=>      fmla v14.2s, v20.2s, v29.2s
AESD V22.B16, V19.B16             <=>      aesd v19.16b, v22.16b
SCVTFWS R3, F16                   <=>      scvtf s17, w6

6. Align directive

Go asm supports the PCALIGN directive, which indicates that the next instruction should be aligned to a specified boundary by padding with NOOP instruction. The alignment value supported on arm64 must be a power of 2 and in the range of [8, 2048].

Examples: 

PCALIGN $16
MOVD $2, R0          // This instruction is aligned with 16 bytes.
PCALIGN $1024
MOVD $3, R1          // This instruction is aligned with 1024 bytes.

PCALIGN also changes the function alignment. If a function has one or more PCALIGN directives, its address will be aligned to the same or coarser boundary, which is the maximum of all the alignment values.

In the following example, the function Add is aligned with 128 bytes.

Examples: 

TEXT ·Add(SB),$40-16
MOVD $2, R0
PCALIGN $32
MOVD $4, R1
PCALIGN $128
MOVD $8, R2
RET

On arm64, functions in Go are aligned to 16 bytes by default, we can also use PCALGIN to set the function alignment. The functions that need to be aligned are preferably using NOFRAME and NOSPLIT to avoid the impact of the prologues inserted by the assembler, so that the function address will have the same alignment as the first hand-written instruction.

In the following example, PCALIGN at the entry of the function Add will align its address to 2048 bytes.

Examples: 

TEXT ·Add(SB),NOSPLIT|NOFRAME,$0
  PCALIGN $2048
  MOVD $1, R0
  MOVD $1, R1
  RET

7. Move large constants to vector registers.

Go asm uses VMOVQ/VMOVD/VMOVS to move 128-bit, 64-bit and 32-bit constants into vector registers, respectively. And for a 128-bit interger, it take two 64-bit operands, for the low and high parts separately.

Examples: 

VMOVS $0x11223344, V0
VMOVD $0x1122334455667788, V1
VMOVQ $0x1122334455667788, $0x99aabbccddeeff00, V2   // V2=0x99aabbccddeeff001122334455667788

8. Move an optionally-shifted 16-bit immediate value to a register.

The instructions are MOVK(W), MOVZ(W) and MOVN(W), the assembly syntax is "op $(uimm16<<shift), <Rd>". The <uimm16> is the 16-bit unsigned immediate, in the range 0 to 65535; For the 32-bit variant, the <shift> is 0 or 16, for the 64-bit variant, the <shift> is 0, 16, 32 or 48.

The current Go assembler does not accept zero shifts, such as "op $0, Rd" and "op $(0<<(16|32|48)), Rd" instructions.

Examples: 

MOVK $(10<<32), R20     <=>      movk x20, #10, lsl #32
MOVZW $(20<<16), R8     <=>      movz w8, #20, lsl #16
MOVK $(0<<16), R10 will be reported as an error by the assembler.

Special Cases.

(1) umov is written as VMOV.

(2) br is renamed JMP, blr is renamed CALL.

(3) No need to add "W" suffix: LDARB, LDARH, LDAXRB, LDAXRH, LDTRH, LDXRB, LDXRH.

(4) In Go assembly syntax, NOP is a zero-width pseudo-instruction serves generic purpose, nothing related to real ARM64 instruction. NOOP serves for the hardware nop instruction. NOOP is an alias of HINT $0.

Examples: 

VMOV V13.B[1], R20      <=>      mov x20, v13.b[1]
VMOV V13.H[1], R20      <=>      mov w20, v13.h[1]
JMP (R3)                <=>      br x3
CALL (R17)              <=>      blr x17
LDAXRB (R19), R16       <=>      ldaxrb w16, [x19]
NOOP                    <=>      nop

Register mapping rules

1. All basic register names are written as Rn.

2. Go uses ZR as the zero register and RSP as the stack pointer.

3. Bn, Hn, Dn, Sn and Qn instructions are written as Fn in floating-point instructions and as Vn in SIMD instructions.

Argument mapping rules

1. The operands appear in left-to-right assignment order.

Go reverses the arguments of most instructions.

Examples: 

ADD R11.SXTB<<1, RSP, R25      <=>      add x25, sp, w11, sxtb #1
VADD V16, V19, V14             <=>      add d14, d19, d16

Special Cases.

(1) Argument order is the same as in the GNU ARM64 syntax: cbz, cbnz and some store instructions, such as str, stur, strb, sturb, strh, sturh stlr, stlrb. stlrh, st1.

Examples: 

MOVD R29, 384(R19)    <=>    str x29, [x19,#384]
MOVB.P R30, 30(R4)    <=>    strb w30, [x4],#30
STLRH R21, (R19)      <=>    stlrh w21, [x19]

(2) MADD, MADDW, MSUB, MSUBW, SMADDL, SMSUBL, UMADDL, UMSUBL <Rm>, <Ra>, <Rn>, <Rd>

Examples: 

MADD R2, R30, R22, R6       <=>    madd x6, x22, x2, x30
SMSUBL R10, R3, R17, R27    <=>    smsubl x27, w17, w10, x3

(3) FMADDD, FMADDS, FMSUBD, FMSUBS, FNMADDD, FNMADDS, FNMSUBD, FNMSUBS <Fm>, <Fa>, <Fn>, <Fd>

Examples: 

FMADDD F30, F20, F3, F29    <=>    fmadd d29, d3, d30, d20
FNMSUBS F7, F25, F7, F22    <=>    fnmsub s22, s7, s7, s25

(4) BFI, BFXIL, SBFIZ, SBFX, UBFIZ, UBFX $<lsb>, <Rn>, $<width>, <Rd>

Examples: 

BFIW $16, R20, $6, R0      <=>    bfi w0, w20, #16, #6
UBFIZ $34, R26, $5, R20    <=>    ubfiz x20, x26, #34, #5

(5) FCCMPD, FCCMPS, FCCMPED, FCCMPES <cond>, Fm. Fn, $<nzcv>

Examples: 

FCCMPD AL, F8, F26, $0     <=>    fccmp d26, d8, #0x0, al
FCCMPS VS, F29, F4, $4     <=>    fccmp s4, s29, #0x4, vs
FCCMPED LE, F20, F5, $13   <=>    fccmpe d5, d20, #0xd, le
FCCMPES NE, F26, F10, $0   <=>    fccmpe s10, s26, #0x0, ne

(6) CCMN, CCMNW, CCMP, CCMPW <cond>, <Rn>, $<imm>, $<nzcv>

Examples: 

CCMP MI, R22, $12, $13     <=>    ccmp x22, #0xc, #0xd, mi
CCMNW AL, R1, $11, $8      <=>    ccmn w1, #0xb, #0x8, al

(7) CCMN, CCMNW, CCMP, CCMPW <cond>, <Rn>, <Rm>, $<nzcv>

Examples: 

CCMN VS, R13, R22, $10     <=>    ccmn x13, x22, #0xa, vs
CCMPW HS, R19, R14, $11    <=>    ccmp w19, w14, #0xb, cs

(9) CSEL, CSELW, CSNEG, CSNEGW, CSINC, CSINCW <cond>, <Rn>, <Rm>, <Rd> ; FCSELD, FCSELS <cond>, <Fn>, <Fm>, <Fd>

Examples: 

CSEL GT, R0, R19, R1        <=>    csel x1, x0, x19, gt
CSNEGW GT, R7, R17, R8      <=>    csneg w8, w7, w17, gt
FCSELD EQ, F15, F18, F16    <=>    fcsel d16, d15, d18, eq

(10) TBNZ, TBZ $<imm>, <Rt>, <label>

(11) STLXR, STLXRW, STXR, STXRW, STLXRB, STLXRH, STXRB, STXRH <Rf>, (<Rn|RSP>), <Rs>

Examples: 

STLXR ZR, (R15), R16    <=>    stlxr w16, xzr, [x15]
STXRB R9, (R21), R19    <=>    stxrb w19, w9, [x21]

(12) STLXP, STLXPW, STXP, STXPW (<Rf1>, <Rf2>), (<Rn|RSP>), <Rs>

Examples: 

STLXP (R17, R19), (R4), R5      <=>    stlxp w5, x17, x19, [x4]
STXPW (R30, R25), (R22), R13    <=>    stxp w13, w30, w25, [x22]

2. Expressions for special arguments.

#<immediate> is written as $<immediate>.

Optionally-shifted immediate.

Examples: 

ADD $(3151<<12), R14, R20     <=>    add x20, x14, #0xc4f, lsl #12
ADDW $1864, R25, R6           <=>    add w6, w25, #0x748

Optionally-shifted registers are written as <Rm>{<shift><amount>}. The <shift> can be <<(lsl), >>(lsr), ->(asr), @>(ror).

Examples: 

ADD R19>>30, R10, R24     <=>    add x24, x10, x19, lsr #30
ADDW R26->24, R21, R15    <=>    add w15, w21, w26, asr #24

Extended registers are written as <Rm>{.<extend>{<<<amount>}}. <extend> can be UXTB, UXTH, UXTW, UXTX, SXTB, SXTH, SXTW or SXTX.

Examples: 

ADDS R19.UXTB<<4, R9, R26     <=>    adds x26, x9, w19, uxtb #4
ADDSW R14.SXTX, R14, R6       <=>    adds w6, w14, w14, sxtx

Memory references: [<Xn|SP>{,#0}] is written as (Rn|RSP), a base register and an immediate offset is written as imm(Rn|RSP), a base register and an offset register is written as (Rn|RSP)(Rm).

Examples: 

LDAR (R22), R9                  <=>    ldar x9, [x22]
LDP 28(R17), (R15, R23)         <=>    ldp x15, x23, [x17,#28]
MOVWU (R4)(R12<<2), R8          <=>    ldr w8, [x4, x12, lsl #2]
MOVD (R7)(R11.UXTW<<3), R25     <=>    ldr x25, [x7,w11,uxtw #3]
MOVBU (R27)(R23), R14           <=>    ldrb w14, [x27,x23]

Register pairs are written as (Rt1, Rt2).

Examples: 

LDP.P -240(R11), (R12, R26)    <=>    ldp x12, x26, [x11],#-240

Register with arrangement and register with arrangement and index.

Examples: 

VADD V5.H8, V18.H8, V9.H8                     <=>    add v9.8h, v18.8h, v5.8h
VLD1 (R2), [V21.B16]                          <=>    ld1 {v21.16b}, [x2]
VST1.P V9.S[1], (R16)(R21)                    <=>    st1 {v9.s}[1], [x16], x28
VST1.P [V13.H8, V14.H8, V15.H8], (R3)(R14)    <=>    st1 {v13.8h-v15.8h}, [x3], x14
VST1.P [V14.D1, V15.D1], (R7)(R23)            <=>    st1 {v14.1d, v15.1d}, [x7], x23

Index

Constants

View Source 
const (
	NSNAME = 8
	NSYM   = 50
	NREG   = 32 /* number of general registers */
	NFREG  = 32 /* number of floating point registers */
)
View Source 
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

	REG_RSP = REG_V31 + 32 // to differentiate ZR/SP, REG_RSP&0x1f = 31
)

General purpose registers, kept in the low bits of Prog.Reg.

View Source 
const (
	REG_ARNG = obj.RBaseARM64 + 1<<10 + iota<<9 // Vn.<T>
	REG_ELEM                                    // Vn.<T>[index]
	REG_ELEM_END
)

bits 0-4 indicates register: Vn bits 5-8 indicates arrangement: <T>

View Source 
const (
	REG_UXTB = REG_EXT + iota<<8
	REG_UXTH
	REG_UXTW
	REG_UXTX
	REG_SXTB
	REG_SXTH
	REG_SXTW
	REG_SXTX
)
View Source 
const (
	REGMIN = REG_R7  // register variables allocated from here to REGMAX
	REGRT1 = REG_R16 // ARM64 IP0, external linker may use as a scrach register in trampoline
	REGRT2 = REG_R17 // ARM64 IP1, external linker may use as a scrach register in trampoline
	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
	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
)

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

View Source 
const (
	/* mark flags */
	LABEL = 1 << iota
	LEAF
	FLOAT
	BRANCH
	LOAD
	FCMP
	SYNC
	LIST
	FOLL
	NOSCHED
)
View Source 
const (
	// optab is sorted based on the order of these constants
	// and the first match is chosen.
	// The more specific class needs to come earlier.
	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   // condition code, EQ, NE, etc.
	C_SPOP   // special operand, PLDL1KEEP, VMALLE1IS, etc.
	C_ARNG   // Vn.<T>
	C_ELEM   // Vn.<T>[index]
	C_LIST   // [V1, V2, V3]

	C_ZCON     // $0 or ZR
	C_ABCON0   // could be C_ADDCON0 or C_BITCON
	C_ADDCON0  // 12-bit unsigned, unshifted
	C_ABCON    // could be C_ADDCON or C_BITCON
	C_AMCON    // could be C_ADDCON or C_MOVCON
	C_ADDCON   // 12-bit unsigned, shifted left by 0 or 12
	C_MBCON    // could be C_MOVCON or C_BITCON
	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_ADDCON2  // 24-bit constant
	C_LCON     // 32-bit constant
	C_MOVCON2  // a constant that can be loaded with one MOVZ/MOVN and one MOVK
	C_MOVCON3  // a constant that can be loaded with one MOVZ/MOVN and two MOVKs
	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_AACON2 // 24-bit 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_ZAUTO       // 0(RSP)
	C_NSAUTO_16   // -256 <= x < 0, 0 mod 16
	C_NSAUTO_8    // -256 <= x < 0, 0 mod 8
	C_NSAUTO_4    // -256 <= x < 0, 0 mod 4
	C_NSAUTO      // -256 <= x < 0
	C_NPAUTO_16   // -512 <= x < 0, 0 mod 16
	C_NPAUTO      // -512 <= x < 0, 0 mod 8
	C_NQAUTO_16   // -1024 <= x < 0, 0 mod 16
	C_NAUTO4K     // -4095 <= x < 0
	C_PSAUTO_16   // 0 to 255, 0 mod 16
	C_PSAUTO_8    // 0 to 255, 0 mod 8
	C_PSAUTO_4    // 0 to 255, 0 mod 4
	C_PSAUTO      // 0 to 255
	C_PPAUTO_16   // 0 to 504, 0 mod 16
	C_PPAUTO      // 0 to 504, 0 mod 8
	C_PQAUTO_16   // 0 to 1008, 0 mod 16
	C_UAUTO4K_16  // 0 to 4095, 0 mod 16
	C_UAUTO4K_8   // 0 to 4095, 0 mod 8
	C_UAUTO4K_4   // 0 to 4095, 0 mod 4
	C_UAUTO4K_2   // 0 to 4095, 0 mod 2
	C_UAUTO4K     // 0 to 4095
	C_UAUTO8K_16  // 0 to 8190, 0 mod 16
	C_UAUTO8K_8   // 0 to 8190, 0 mod 8
	C_UAUTO8K_4   // 0 to 8190, 0 mod 4
	C_UAUTO8K     // 0 to 8190, 0 mod 2  + C_PSAUTO
	C_UAUTO16K_16 // 0 to 16380, 0 mod 16
	C_UAUTO16K_8  // 0 to 16380, 0 mod 8
	C_UAUTO16K    // 0 to 16380, 0 mod 4 + C_PSAUTO
	C_UAUTO32K_16 // 0 to 32760, 0 mod 16 + C_PSAUTO
	C_UAUTO32K    // 0 to 32760, 0 mod 8 + C_PSAUTO
	C_UAUTO64K    // 0 to 65520, 0 mod 16 + C_PSAUTO
	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

	C_ZOREG     // 0(R)
	C_NSOREG_16 // must mirror C_NSAUTO_16, etc
	C_NSOREG_8
	C_NSOREG_4
	C_NSOREG
	C_NPOREG_16
	C_NPOREG
	C_NQOREG_16
	C_NOREG4K
	C_PSOREG_16
	C_PSOREG_8
	C_PSOREG_4
	C_PSOREG
	C_PPOREG_16
	C_PPOREG
	C_PQOREG_16
	C_UOREG4K_16
	C_UOREG4K_8
	C_UOREG4K_4
	C_UOREG4K_2
	C_UOREG4K
	C_UOREG8K_16
	C_UOREG8K_8
	C_UOREG8K_4
	C_UOREG8K
	C_UOREG16K_16
	C_UOREG16K_8
	C_UOREG16K
	C_UOREG32K_16
	C_UOREG32K
	C_UOREG64K
	C_LOREG

	C_ADDR // TODO(aram): explain difference from C_VCONADDR

	// The GOT slot for a symbol in -dynlink mode.
	C_GOTADDR

	// TLS "var" in local exec mode: will become a constant offset from
	// thread local base that is ultimately chosen by the program linker.
	C_TLS_LE

	// TLS "var" in initial exec mode: will become a memory address (chosen
	// by the program linker) that the dynamic linker will fill with the
	// offset from the thread local base.
	C_TLS_IE

	C_ROFF // register offset (including register extended)

	C_GOK
	C_TEXTSIZE
	C_NCLASS // must be last
)
View Source 
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
)
View Source 
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
	ALDADDAB
	ALDADDAD
	ALDADDAH
	ALDADDAW
	ALDADDALB
	ALDADDALD
	ALDADDALH
	ALDADDALW
	ALDADDB
	ALDADDD
	ALDADDH
	ALDADDW
	ALDADDLB
	ALDADDLD
	ALDADDLH
	ALDADDLW
	ALDAR
	ALDARB
	ALDARH
	ALDARW
	ALDAXP
	ALDAXPW
	ALDAXR
	ALDAXRB
	ALDAXRH
	ALDAXRW
	ALDCLRAB
	ALDCLRAD
	ALDCLRAH
	ALDCLRAW
	ALDCLRALB
	ALDCLRALD
	ALDCLRALH
	ALDCLRALW
	ALDCLRB
	ALDCLRD
	ALDCLRH
	ALDCLRW
	ALDCLRLB
	ALDCLRLD
	ALDCLRLH
	ALDCLRLW
	ALDEORAB
	ALDEORAD
	ALDEORAH
	ALDEORAW
	ALDEORALB
	ALDEORALD
	ALDEORALH
	ALDEORALW
	ALDEORB
	ALDEORD
	ALDEORH
	ALDEORW
	ALDEORLB
	ALDEORLD
	ALDEORLH
	ALDEORLW
	ALDORAB
	ALDORAD
	ALDORAH
	ALDORAW
	ALDORALB
	ALDORALD
	ALDORALH
	ALDORALW
	ALDORB
	ALDORD
	ALDORH
	ALDORW
	ALDORLB
	ALDORLD
	ALDORLH
	ALDORLW
	ALDP
	ALDPW
	ALDPSW
	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
	ANOOP
	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
	ASTPW
	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
	ASWPAD
	ASWPAW
	ASWPAH
	ASWPAB
	ASWPALD
	ASWPALW
	ASWPALH
	ASWPALB
	ASWPD
	ASWPW
	ASWPH
	ASWPB
	ASWPLD
	ASWPLW
	ASWPLH
	ASWPLB
	ACASD
	ACASW
	ACASH
	ACASB
	ACASAD
	ACASAW
	ACASLD
	ACASLW
	ACASALD
	ACASALW
	ACASALH
	ACASALB
	ACASPD
	ACASPW
	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
	AFLDPD
	AFLDPQ
	AFLDPS
	AFMOVQ
	AFMOVD
	AFMOVS
	AVMOVQ
	AVMOVD
	AVMOVS
	AFMULD
	AFMULS
	AFNEGD
	AFNEGS
	AFSQRTD
	AFSQRTS
	AFSTPD
	AFSTPQ
	AFSTPS
	AFSUBD
	AFSUBS
	ASCVTFD
	ASCVTFS
	ASCVTFWD
	ASCVTFWS
	AUCVTFD
	AUCVTFS
	AUCVTFWD
	AUCVTFWS
	AWORD
	ADWORD
	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
	ASHA512H
	ASHA512H2
	ASHA512SU0
	ASHA512SU1
	AVADD
	AVADDP
	AVAND
	AVBIF
	AVBCAX
	AVCMEQ
	AVCNT
	AVEOR
	AVEOR3
	AVMOV
	AVLD1
	AVLD2
	AVLD3
	AVLD4
	AVLD1R
	AVLD2R
	AVLD3R
	AVLD4R
	AVORR
	AVREV16
	AVREV32
	AVREV64
	AVST1
	AVST2
	AVST3
	AVST4
	AVDUP
	AVADDV
	AVMOVI
	AVUADDLV
	AVSUB
	AVFMLA
	AVFMLS
	AVPMULL
	AVPMULL2
	AVEXT
	AVRBIT
	AVRAX1
	AVUMAX
	AVUMIN
	AVUSHR
	AVUSHLL
	AVUSHLL2
	AVUXTL
	AVUXTL2
	AVUZP1
	AVUZP2
	AVSHL
	AVSRI
	AVSLI
	AVBSL
	AVBIT
	AVTBL
	AVXAR
	AVZIP1
	AVZIP2
	AVCMTST
	AVUADDW2
	AVUADDW
	AVUSRA
	AVTRN1
	AVTRN2
	ALAST
	AB  = obj.AJMP
	ABL = obj.ACALL
)
View Source 
const (
	// shift types
	SHIFT_LL  = 0 << 22
	SHIFT_LR  = 1 << 22
	SHIFT_AR  = 2 << 22
	SHIFT_ROR = 3 << 22
)
View Source 
const (
	// arrangement types
	ARNG_8B = iota
	ARNG_16B
	ARNG_1D
	ARNG_4H
	ARNG_8H
	ARNG_2S
	ARNG_4S
	ARNG_2D
	ARNG_1Q
	ARNG_B
	ARNG_H
	ARNG_S
	ARNG_D
)

Arrangement for ARM64 SIMD instructions

View Source 
const (
	S32     = 0 << 31
	S64     = 1 << 31
	Sbit    = 1 << 29
	LSL0_32 = 2 << 13
	LSL0_64 = 3 << 13
)
View Source 
const (
	// Optab.flag
	LFROM     = 1 << 0 // p.From uses constant pool
	LFROM128  = 1 << 1 // p.From3<<64+p.From forms a 128-bit constant in literal pool
	LTO       = 1 << 2 // p.To uses constant pool
	NOTUSETMP = 1 << 3 // p expands to multiple instructions, but does NOT use REGTMP
)
View Source 
const (
	SYSREG_BEGIN = REG_SPECIAL + iota
	REG_ACTLR_EL1
	REG_AFSR0_EL1
	REG_AFSR1_EL1
	REG_AIDR_EL1
	REG_AMAIR_EL1
	REG_AMCFGR_EL0
	REG_AMCGCR_EL0
	REG_AMCNTENCLR0_EL0
	REG_AMCNTENCLR1_EL0
	REG_AMCNTENSET0_EL0
	REG_AMCNTENSET1_EL0
	REG_AMCR_EL0
	REG_AMEVCNTR00_EL0
	REG_AMEVCNTR01_EL0
	REG_AMEVCNTR02_EL0
	REG_AMEVCNTR03_EL0
	REG_AMEVCNTR04_EL0
	REG_AMEVCNTR05_EL0
	REG_AMEVCNTR06_EL0
	REG_AMEVCNTR07_EL0
	REG_AMEVCNTR08_EL0
	REG_AMEVCNTR09_EL0
	REG_AMEVCNTR010_EL0
	REG_AMEVCNTR011_EL0
	REG_AMEVCNTR012_EL0
	REG_AMEVCNTR013_EL0
	REG_AMEVCNTR014_EL0
	REG_AMEVCNTR015_EL0
	REG_AMEVCNTR10_EL0
	REG_AMEVCNTR11_EL0
	REG_AMEVCNTR12_EL0
	REG_AMEVCNTR13_EL0
	REG_AMEVCNTR14_EL0
	REG_AMEVCNTR15_EL0
	REG_AMEVCNTR16_EL0
	REG_AMEVCNTR17_EL0
	REG_AMEVCNTR18_EL0
	REG_AMEVCNTR19_EL0
	REG_AMEVCNTR110_EL0
	REG_AMEVCNTR111_EL0
	REG_AMEVCNTR112_EL0
	REG_AMEVCNTR113_EL0
	REG_AMEVCNTR114_EL0
	REG_AMEVCNTR115_EL0
	REG_AMEVTYPER00_EL0
	REG_AMEVTYPER01_EL0
	REG_AMEVTYPER02_EL0
	REG_AMEVTYPER03_EL0
	REG_AMEVTYPER04_EL0
	REG_AMEVTYPER05_EL0
	REG_AMEVTYPER06_EL0
	REG_AMEVTYPER07_EL0
	REG_AMEVTYPER08_EL0
	REG_AMEVTYPER09_EL0
	REG_AMEVTYPER010_EL0
	REG_AMEVTYPER011_EL0
	REG_AMEVTYPER012_EL0
	REG_AMEVTYPER013_EL0
	REG_AMEVTYPER014_EL0
	REG_AMEVTYPER015_EL0
	REG_AMEVTYPER10_EL0
	REG_AMEVTYPER11_EL0
	REG_AMEVTYPER12_EL0
	REG_AMEVTYPER13_EL0
	REG_AMEVTYPER14_EL0
	REG_AMEVTYPER15_EL0
	REG_AMEVTYPER16_EL0
	REG_AMEVTYPER17_EL0
	REG_AMEVTYPER18_EL0
	REG_AMEVTYPER19_EL0
	REG_AMEVTYPER110_EL0
	REG_AMEVTYPER111_EL0
	REG_AMEVTYPER112_EL0
	REG_AMEVTYPER113_EL0
	REG_AMEVTYPER114_EL0
	REG_AMEVTYPER115_EL0
	REG_AMUSERENR_EL0
	REG_APDAKeyHi_EL1
	REG_APDAKeyLo_EL1
	REG_APDBKeyHi_EL1
	REG_APDBKeyLo_EL1
	REG_APGAKeyHi_EL1
	REG_APGAKeyLo_EL1
	REG_APIAKeyHi_EL1
	REG_APIAKeyLo_EL1
	REG_APIBKeyHi_EL1
	REG_APIBKeyLo_EL1
	REG_CCSIDR2_EL1
	REG_CCSIDR_EL1
	REG_CLIDR_EL1
	REG_CNTFRQ_EL0
	REG_CNTKCTL_EL1
	REG_CNTP_CTL_EL0
	REG_CNTP_CVAL_EL0
	REG_CNTP_TVAL_EL0
	REG_CNTPCT_EL0
	REG_CNTPS_CTL_EL1
	REG_CNTPS_CVAL_EL1
	REG_CNTPS_TVAL_EL1
	REG_CNTV_CTL_EL0
	REG_CNTV_CVAL_EL0
	REG_CNTV_TVAL_EL0
	REG_CNTVCT_EL0
	REG_CONTEXTIDR_EL1
	REG_CPACR_EL1
	REG_CSSELR_EL1
	REG_CTR_EL0
	REG_CurrentEL
	REG_DAIF
	REG_DBGAUTHSTATUS_EL1
	REG_DBGBCR0_EL1
	REG_DBGBCR1_EL1
	REG_DBGBCR2_EL1
	REG_DBGBCR3_EL1
	REG_DBGBCR4_EL1
	REG_DBGBCR5_EL1
	REG_DBGBCR6_EL1
	REG_DBGBCR7_EL1
	REG_DBGBCR8_EL1
	REG_DBGBCR9_EL1
	REG_DBGBCR10_EL1
	REG_DBGBCR11_EL1
	REG_DBGBCR12_EL1
	REG_DBGBCR13_EL1
	REG_DBGBCR14_EL1
	REG_DBGBCR15_EL1
	REG_DBGBVR0_EL1
	REG_DBGBVR1_EL1
	REG_DBGBVR2_EL1
	REG_DBGBVR3_EL1
	REG_DBGBVR4_EL1
	REG_DBGBVR5_EL1
	REG_DBGBVR6_EL1
	REG_DBGBVR7_EL1
	REG_DBGBVR8_EL1
	REG_DBGBVR9_EL1
	REG_DBGBVR10_EL1
	REG_DBGBVR11_EL1
	REG_DBGBVR12_EL1
	REG_DBGBVR13_EL1
	REG_DBGBVR14_EL1
	REG_DBGBVR15_EL1
	REG_DBGCLAIMCLR_EL1
	REG_DBGCLAIMSET_EL1
	REG_DBGDTR_EL0
	REG_DBGDTRRX_EL0
	REG_DBGDTRTX_EL0
	REG_DBGPRCR_EL1
	REG_DBGWCR0_EL1
	REG_DBGWCR1_EL1
	REG_DBGWCR2_EL1
	REG_DBGWCR3_EL1
	REG_DBGWCR4_EL1
	REG_DBGWCR5_EL1
	REG_DBGWCR6_EL1
	REG_DBGWCR7_EL1
	REG_DBGWCR8_EL1
	REG_DBGWCR9_EL1
	REG_DBGWCR10_EL1
	REG_DBGWCR11_EL1
	REG_DBGWCR12_EL1
	REG_DBGWCR13_EL1
	REG_DBGWCR14_EL1
	REG_DBGWCR15_EL1
	REG_DBGWVR0_EL1
	REG_DBGWVR1_EL1
	REG_DBGWVR2_EL1
	REG_DBGWVR3_EL1
	REG_DBGWVR4_EL1
	REG_DBGWVR5_EL1
	REG_DBGWVR6_EL1
	REG_DBGWVR7_EL1
	REG_DBGWVR8_EL1
	REG_DBGWVR9_EL1
	REG_DBGWVR10_EL1
	REG_DBGWVR11_EL1
	REG_DBGWVR12_EL1
	REG_DBGWVR13_EL1
	REG_DBGWVR14_EL1
	REG_DBGWVR15_EL1
	REG_DCZID_EL0
	REG_DISR_EL1
	REG_DIT
	REG_DLR_EL0
	REG_DSPSR_EL0
	REG_ELR_EL1
	REG_ERRIDR_EL1
	REG_ERRSELR_EL1
	REG_ERXADDR_EL1
	REG_ERXCTLR_EL1
	REG_ERXFR_EL1
	REG_ERXMISC0_EL1
	REG_ERXMISC1_EL1
	REG_ERXMISC2_EL1
	REG_ERXMISC3_EL1
	REG_ERXPFGCDN_EL1
	REG_ERXPFGCTL_EL1
	REG_ERXPFGF_EL1
	REG_ERXSTATUS_EL1
	REG_ESR_EL1
	REG_FAR_EL1
	REG_FPCR
	REG_FPSR
	REG_GCR_EL1
	REG_GMID_EL1
	REG_ICC_AP0R0_EL1
	REG_ICC_AP0R1_EL1
	REG_ICC_AP0R2_EL1
	REG_ICC_AP0R3_EL1
	REG_ICC_AP1R0_EL1
	REG_ICC_AP1R1_EL1
	REG_ICC_AP1R2_EL1
	REG_ICC_AP1R3_EL1
	REG_ICC_ASGI1R_EL1
	REG_ICC_BPR0_EL1
	REG_ICC_BPR1_EL1
	REG_ICC_CTLR_EL1
	REG_ICC_DIR_EL1
	REG_ICC_EOIR0_EL1
	REG_ICC_EOIR1_EL1
	REG_ICC_HPPIR0_EL1
	REG_ICC_HPPIR1_EL1
	REG_ICC_IAR0_EL1
	REG_ICC_IAR1_EL1
	REG_ICC_IGRPEN0_EL1
	REG_ICC_IGRPEN1_EL1
	REG_ICC_PMR_EL1
	REG_ICC_RPR_EL1
	REG_ICC_SGI0R_EL1
	REG_ICC_SGI1R_EL1
	REG_ICC_SRE_EL1
	REG_ICV_AP0R0_EL1
	REG_ICV_AP0R1_EL1
	REG_ICV_AP0R2_EL1
	REG_ICV_AP0R3_EL1
	REG_ICV_AP1R0_EL1
	REG_ICV_AP1R1_EL1
	REG_ICV_AP1R2_EL1
	REG_ICV_AP1R3_EL1
	REG_ICV_BPR0_EL1
	REG_ICV_BPR1_EL1
	REG_ICV_CTLR_EL1
	REG_ICV_DIR_EL1
	REG_ICV_EOIR0_EL1
	REG_ICV_EOIR1_EL1
	REG_ICV_HPPIR0_EL1
	REG_ICV_HPPIR1_EL1
	REG_ICV_IAR0_EL1
	REG_ICV_IAR1_EL1
	REG_ICV_IGRPEN0_EL1
	REG_ICV_IGRPEN1_EL1
	REG_ICV_PMR_EL1
	REG_ICV_RPR_EL1
	REG_ID_AA64AFR0_EL1
	REG_ID_AA64AFR1_EL1
	REG_ID_AA64DFR0_EL1
	REG_ID_AA64DFR1_EL1
	REG_ID_AA64ISAR0_EL1
	REG_ID_AA64ISAR1_EL1
	REG_ID_AA64MMFR0_EL1
	REG_ID_AA64MMFR1_EL1
	REG_ID_AA64MMFR2_EL1
	REG_ID_AA64PFR0_EL1
	REG_ID_AA64PFR1_EL1
	REG_ID_AA64ZFR0_EL1
	REG_ID_AFR0_EL1
	REG_ID_DFR0_EL1
	REG_ID_ISAR0_EL1
	REG_ID_ISAR1_EL1
	REG_ID_ISAR2_EL1
	REG_ID_ISAR3_EL1
	REG_ID_ISAR4_EL1
	REG_ID_ISAR5_EL1
	REG_ID_ISAR6_EL1
	REG_ID_MMFR0_EL1
	REG_ID_MMFR1_EL1
	REG_ID_MMFR2_EL1
	REG_ID_MMFR3_EL1
	REG_ID_MMFR4_EL1
	REG_ID_PFR0_EL1
	REG_ID_PFR1_EL1
	REG_ID_PFR2_EL1
	REG_ISR_EL1
	REG_LORC_EL1
	REG_LOREA_EL1
	REG_LORID_EL1
	REG_LORN_EL1
	REG_LORSA_EL1
	REG_MAIR_EL1
	REG_MDCCINT_EL1
	REG_MDCCSR_EL0
	REG_MDRAR_EL1
	REG_MDSCR_EL1
	REG_MIDR_EL1
	REG_MPAM0_EL1
	REG_MPAM1_EL1
	REG_MPAMIDR_EL1
	REG_MPIDR_EL1
	REG_MVFR0_EL1
	REG_MVFR1_EL1
	REG_MVFR2_EL1
	REG_NZCV
	REG_OSDLR_EL1
	REG_OSDTRRX_EL1
	REG_OSDTRTX_EL1
	REG_OSECCR_EL1
	REG_OSLAR_EL1
	REG_OSLSR_EL1
	REG_PAN
	REG_PAR_EL1
	REG_PMBIDR_EL1
	REG_PMBLIMITR_EL1
	REG_PMBPTR_EL1
	REG_PMBSR_EL1
	REG_PMCCFILTR_EL0
	REG_PMCCNTR_EL0
	REG_PMCEID0_EL0
	REG_PMCEID1_EL0
	REG_PMCNTENCLR_EL0
	REG_PMCNTENSET_EL0
	REG_PMCR_EL0
	REG_PMEVCNTR0_EL0
	REG_PMEVCNTR1_EL0
	REG_PMEVCNTR2_EL0
	REG_PMEVCNTR3_EL0
	REG_PMEVCNTR4_EL0
	REG_PMEVCNTR5_EL0
	REG_PMEVCNTR6_EL0
	REG_PMEVCNTR7_EL0
	REG_PMEVCNTR8_EL0
	REG_PMEVCNTR9_EL0
	REG_PMEVCNTR10_EL0
	REG_PMEVCNTR11_EL0
	REG_PMEVCNTR12_EL0
	REG_PMEVCNTR13_EL0
	REG_PMEVCNTR14_EL0
	REG_PMEVCNTR15_EL0
	REG_PMEVCNTR16_EL0
	REG_PMEVCNTR17_EL0
	REG_PMEVCNTR18_EL0
	REG_PMEVCNTR19_EL0
	REG_PMEVCNTR20_EL0
	REG_PMEVCNTR21_EL0
	REG_PMEVCNTR22_EL0
	REG_PMEVCNTR23_EL0
	REG_PMEVCNTR24_EL0
	REG_PMEVCNTR25_EL0
	REG_PMEVCNTR26_EL0
	REG_PMEVCNTR27_EL0
	REG_PMEVCNTR28_EL0
	REG_PMEVCNTR29_EL0
	REG_PMEVCNTR30_EL0
	REG_PMEVTYPER0_EL0
	REG_PMEVTYPER1_EL0
	REG_PMEVTYPER2_EL0
	REG_PMEVTYPER3_EL0
	REG_PMEVTYPER4_EL0
	REG_PMEVTYPER5_EL0
	REG_PMEVTYPER6_EL0
	REG_PMEVTYPER7_EL0
	REG_PMEVTYPER8_EL0
	REG_PMEVTYPER9_EL0
	REG_PMEVTYPER10_EL0
	REG_PMEVTYPER11_EL0
	REG_PMEVTYPER12_EL0
	REG_PMEVTYPER13_EL0
	REG_PMEVTYPER14_EL0
	REG_PMEVTYPER15_EL0
	REG_PMEVTYPER16_EL0
	REG_PMEVTYPER17_EL0
	REG_PMEVTYPER18_EL0
	REG_PMEVTYPER19_EL0
	REG_PMEVTYPER20_EL0
	REG_PMEVTYPER21_EL0
	REG_PMEVTYPER22_EL0
	REG_PMEVTYPER23_EL0
	REG_PMEVTYPER24_EL0
	REG_PMEVTYPER25_EL0
	REG_PMEVTYPER26_EL0
	REG_PMEVTYPER27_EL0
	REG_PMEVTYPER28_EL0
	REG_PMEVTYPER29_EL0
	REG_PMEVTYPER30_EL0
	REG_PMINTENCLR_EL1
	REG_PMINTENSET_EL1
	REG_PMMIR_EL1
	REG_PMOVSCLR_EL0
	REG_PMOVSSET_EL0
	REG_PMSCR_EL1
	REG_PMSELR_EL0
	REG_PMSEVFR_EL1
	REG_PMSFCR_EL1
	REG_PMSICR_EL1
	REG_PMSIDR_EL1
	REG_PMSIRR_EL1
	REG_PMSLATFR_EL1
	REG_PMSWINC_EL0
	REG_PMUSERENR_EL0
	REG_PMXEVCNTR_EL0
	REG_PMXEVTYPER_EL0
	REG_REVIDR_EL1
	REG_RGSR_EL1
	REG_RMR_EL1
	REG_RNDR
	REG_RNDRRS
	REG_RVBAR_EL1
	REG_SCTLR_EL1
	REG_SCXTNUM_EL0
	REG_SCXTNUM_EL1
	REG_SP_EL0
	REG_SP_EL1
	REG_SPSel
	REG_SPSR_abt
	REG_SPSR_EL1
	REG_SPSR_fiq
	REG_SPSR_irq
	REG_SPSR_und
	REG_SSBS
	REG_TCO
	REG_TCR_EL1
	REG_TFSR_EL1
	REG_TFSRE0_EL1
	REG_TPIDR_EL0
	REG_TPIDR_EL1
	REG_TPIDRRO_EL0
	REG_TRFCR_EL1
	REG_TTBR0_EL1
	REG_TTBR1_EL1
	REG_UAO
	REG_VBAR_EL1
	REG_ZCR_EL1
	SYSREG_END
)
View Source 
const (
	SR_READ = 1 << iota
	SR_WRITE
)
View Source 
const (
	BIG = 2048 - 8
)
View Source 
const OP_NOOP = 0xd503201f

Used for padinng NOOP instruction

View Source 
const (
	REGFROM = 1
)
View Source 
const REG_EXT = obj.RBaseARM64 + 1<<11
View Source 
const REG_LSL = obj.RBaseARM64 + 1<<9

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. REG_LSL is the index shift specifier, bit 9 indicates shifted offset register.

View Source 
const (
	REG_SPECIAL = obj.RBaseARM64 + 1<<12
)

Special registers, after subtracting obj.RBaseARM64, bit 12 indicates a special register and the low bits select the register. SYSREG_END is the last item in the automatically generated system register declaration, and it is defined in the sysRegEnc.go file. Define the special register after REG_SPECIAL, the first value of it should be REG_{name} = SYSREG_END + iota.

Variables

View Source 
var ARM64DWARFRegisters = map[int16]int16{
	REG_R0:  0,
	REG_R1:  1,
	REG_R2:  2,
	REG_R3:  3,
	REG_R4:  4,
	REG_R5:  5,
	REG_R6:  6,
	REG_R7:  7,
	REG_R8:  8,
	REG_R9:  9,
	REG_R10: 10,
	REG_R11: 11,
	REG_R12: 12,
	REG_R13: 13,
	REG_R14: 14,
	REG_R15: 15,
	REG_R16: 16,
	REG_R17: 17,
	REG_R18: 18,
	REG_R19: 19,
	REG_R20: 20,
	REG_R21: 21,
	REG_R22: 22,
	REG_R23: 23,
	REG_R24: 24,
	REG_R25: 25,
	REG_R26: 26,
	REG_R27: 27,
	REG_R28: 28,
	REG_R29: 29,
	REG_R30: 30,

	REG_F0:  64,
	REG_F1:  65,
	REG_F2:  66,
	REG_F3:  67,
	REG_F4:  68,
	REG_F5:  69,
	REG_F6:  70,
	REG_F7:  71,
	REG_F8:  72,
	REG_F9:  73,
	REG_F10: 74,
	REG_F11: 75,
	REG_F12: 76,
	REG_F13: 77,
	REG_F14: 78,
	REG_F15: 79,
	REG_F16: 80,
	REG_F17: 81,
	REG_F18: 82,
	REG_F19: 83,
	REG_F20: 84,
	REG_F21: 85,
	REG_F22: 86,
	REG_F23: 87,
	REG_F24: 88,
	REG_F25: 89,
	REG_F26: 90,
	REG_F27: 91,
	REG_F28: 92,
	REG_F29: 93,
	REG_F30: 94,
	REG_F31: 95,

	REG_V0:  64,
	REG_V1:  65,
	REG_V2:  66,
	REG_V3:  67,
	REG_V4:  68,
	REG_V5:  69,
	REG_V6:  70,
	REG_V7:  71,
	REG_V8:  72,
	REG_V9:  73,
	REG_V10: 74,
	REG_V11: 75,
	REG_V12: 76,
	REG_V13: 77,
	REG_V14: 78,
	REG_V15: 79,
	REG_V16: 80,
	REG_V17: 81,
	REG_V18: 82,
	REG_V19: 83,
	REG_V20: 84,
	REG_V21: 85,
	REG_V22: 86,
	REG_V23: 87,
	REG_V24: 88,
	REG_V25: 89,
	REG_V26: 90,
	REG_V27: 91,
	REG_V28: 92,
	REG_V29: 93,
	REG_V30: 94,
	REG_V31: 95,
}

http://infocenter.arm.com/help/topic/com.arm.doc.ecm0665627/abi_sve_aadwarf_100985_0000_00_en.pdf

View Source 
var Anames = []string{}/* 535 elements not displayed */
View Source 
var Linkarm64 = obj.LinkArch{
	Arch:           sys.ArchARM64,
	Init:           buildop,
	Preprocess:     preprocess,
	Assemble:       span7,
	Progedit:       progedit,
	UnaryDst:       unaryDst,
	DWARFRegisters: ARM64DWARFRegisters,
}
View Source 
var SystemReg = []struct {
	Name string
	Reg  int16
	Enc  uint32
	// AccessFlags is the readable and writeable property of system register.
	AccessFlags uint8

}{}/* 431 elements not displayed */

Functions

func ADR 

func ADR(p uint32, o uint32, rt uint32) uint32

func DRconv 

func DRconv(a int) string

func FPCCMP 

func FPCCMP(m uint32, s uint32, type_ uint32, op uint32) uint32

func FPCMP 

func FPCMP(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32

func FPCVTI 

func FPCVTI(sf uint32, s uint32, type_ uint32, rmode uint32, op uint32) uint32

func FPOP1S 

func FPOP1S(m uint32, s uint32, type_ uint32, op uint32) uint32

func FPOP2S 

func FPOP2S(m uint32, s uint32, type_ uint32, op uint32) uint32

func FPOP3S added in go1.11 

func FPOP3S(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32

func IsAtomicInstruction added in go1.13 

func IsAtomicInstruction(as obj.As) bool

func LD2STR 

func LD2STR(o uint32) uint32

func LDSTR added in go1.16 

func LDSTR(sz uint32, v uint32, opc uint32) uint32

func LDSTX 

func LDSTX(sz uint32, o2 uint32, l uint32, o1 uint32, o0 uint32) uint32

func MOVCONST added in go1.12 

func MOVCONST(d int64, s int, rt int) uint32

func OPBIT 

func OPBIT(x uint32) uint32

func OPBLR 

func OPBLR(x uint32) uint32

func OPBcc 

func OPBcc(x uint32) uint32

func OPDP2 

func OPDP2(x uint32) uint32

func OPDP3 

func OPDP3(sf uint32, op54 uint32, op31 uint32, o0 uint32) uint32

func SPCconv added in go1.19 

func SPCconv(a int64) string

func SYSARG4 

func SYSARG4(op1 int, Cn int, Cm int, op2 int) int

func SYSARG5 

func SYSARG5(op0 int, op1 int, Cn int, Cm int, op2 int) int

form offset parameter to SYS; special register number

func SYSHINT 

func SYSHINT(x uint32) uint32

func SYSOP 

func SYSOP(l uint32, op0 uint32, op1 uint32, crn uint32, crm uint32, op2 uint32, rt uint32) uint32

func SysRegEnc added in go1.14 

func SysRegEnc(r int16) (string, uint32, uint8)

Types

type Optab 

type Optab struct {
	// contains filtered or unexported fields
}

type SpecialOperand added in go1.19 

type SpecialOperand int
const (
	// PRFM
	SPOP_PLDL1KEEP SpecialOperand = iota     // must be the first one
	SPOP_BEGIN     SpecialOperand = iota - 1 // set as the lower bound
	SPOP_PLDL1STRM
	SPOP_PLDL2KEEP
	SPOP_PLDL2STRM
	SPOP_PLDL3KEEP
	SPOP_PLDL3STRM
	SPOP_PLIL1KEEP
	SPOP_PLIL1STRM
	SPOP_PLIL2KEEP
	SPOP_PLIL2STRM
	SPOP_PLIL3KEEP
	SPOP_PLIL3STRM
	SPOP_PSTL1KEEP
	SPOP_PSTL1STRM
	SPOP_PSTL2KEEP
	SPOP_PSTL2STRM
	SPOP_PSTL3KEEP
	SPOP_PSTL3STRM

	// TLBI
	SPOP_VMALLE1IS
	SPOP_VAE1IS
	SPOP_ASIDE1IS
	SPOP_VAAE1IS
	SPOP_VALE1IS
	SPOP_VAALE1IS
	SPOP_VMALLE1
	SPOP_VAE1
	SPOP_ASIDE1
	SPOP_VAAE1
	SPOP_VALE1
	SPOP_VAALE1
	SPOP_IPAS2E1IS
	SPOP_IPAS2LE1IS
	SPOP_ALLE2IS
	SPOP_VAE2IS
	SPOP_ALLE1IS
	SPOP_VALE2IS
	SPOP_VMALLS12E1IS
	SPOP_IPAS2E1
	SPOP_IPAS2LE1
	SPOP_ALLE2
	SPOP_VAE2
	SPOP_ALLE1
	SPOP_VALE2
	SPOP_VMALLS12E1
	SPOP_ALLE3IS
	SPOP_VAE3IS
	SPOP_VALE3IS
	SPOP_ALLE3
	SPOP_VAE3
	SPOP_VALE3
	SPOP_VMALLE1OS
	SPOP_VAE1OS
	SPOP_ASIDE1OS
	SPOP_VAAE1OS
	SPOP_VALE1OS
	SPOP_VAALE1OS
	SPOP_RVAE1IS
	SPOP_RVAAE1IS
	SPOP_RVALE1IS
	SPOP_RVAALE1IS
	SPOP_RVAE1OS
	SPOP_RVAAE1OS
	SPOP_RVALE1OS
	SPOP_RVAALE1OS
	SPOP_RVAE1
	SPOP_RVAAE1
	SPOP_RVALE1
	SPOP_RVAALE1
	SPOP_RIPAS2E1IS
	SPOP_RIPAS2LE1IS
	SPOP_ALLE2OS
	SPOP_VAE2OS
	SPOP_ALLE1OS
	SPOP_VALE2OS
	SPOP_VMALLS12E1OS
	SPOP_RVAE2IS
	SPOP_RVALE2IS
	SPOP_IPAS2E1OS
	SPOP_RIPAS2E1
	SPOP_RIPAS2E1OS
	SPOP_IPAS2LE1OS
	SPOP_RIPAS2LE1
	SPOP_RIPAS2LE1OS
	SPOP_RVAE2OS
	SPOP_RVALE2OS
	SPOP_RVAE2
	SPOP_RVALE2
	SPOP_ALLE3OS
	SPOP_VAE3OS
	SPOP_VALE3OS
	SPOP_RVAE3IS
	SPOP_RVALE3IS
	SPOP_RVAE3OS
	SPOP_RVALE3OS
	SPOP_RVAE3
	SPOP_RVALE3

	// DC
	SPOP_IVAC
	SPOP_ISW
	SPOP_CSW
	SPOP_CISW
	SPOP_ZVA
	SPOP_CVAC
	SPOP_CVAU
	SPOP_CIVAC
	SPOP_IGVAC
	SPOP_IGSW
	SPOP_IGDVAC
	SPOP_IGDSW
	SPOP_CGSW
	SPOP_CGDSW
	SPOP_CIGSW
	SPOP_CIGDSW
	SPOP_GVA
	SPOP_GZVA
	SPOP_CGVAC
	SPOP_CGDVAC
	SPOP_CGVAP
	SPOP_CGDVAP
	SPOP_CGVADP
	SPOP_CGDVADP
	SPOP_CIGVAC
	SPOP_CIGDVAC
	SPOP_CVAP
	SPOP_CVADP

	// PSTATE fields
	SPOP_DAIFSet
	SPOP_DAIFClr

	// Condition code, EQ, NE, etc. Their relative order to EQ is matter.
	SPOP_EQ
	SPOP_NE
	SPOP_HS
	SPOP_LO
	SPOP_MI
	SPOP_PL
	SPOP_VS
	SPOP_VC
	SPOP_HI
	SPOP_LS
	SPOP_GE
	SPOP_LT
	SPOP_GT
	SPOP_LE
	SPOP_AL
	SPOP_NV

	SPOP_END
)

func (SpecialOperand) String added in go1.19 

func (i SpecialOperand) String() string

Source Files

View all Source files

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