ppc64

package standard library
Version: go1.16.6 Latest Latest
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Published: Jul 12, 2021 License: BSD-3-Clause Imports: 9 Imported by: 0

Documentation

Overview

Package ppc64 implements a PPC64 assembler that assembles Go asm into the corresponding PPC64 instructions as defined by the Power ISA 3.0B.

This document provides information on how to write code in Go assembler for PPC64, focusing on the differences between Go and PPC64 assembly language. It assumes some knowledge of PPC64 assembler. The original implementation of PPC64 in Go defined many opcodes that are different from PPC64 opcodes, but updates to the Go assembly language used mnemonics that are mostly similar if not identical to the PPC64 mneumonics, such as VMX and VSX instructions. Not all detail is included here; refer to the Power ISA document if interested in more detail.

Starting with Go 1.15 the Go objdump supports the -gnu option, which provides a side by side view of the Go assembler and the PPC64 assembler output. This is extremely helpful in determining what final PPC64 assembly is generated from the corresponding Go assembly.

In the examples below, the Go assembly is on the left, PPC64 assembly on the right.

1. Operand ordering

In Go asm, the last operand (right) is the target operand, but with PPC64 asm,
the first operand (left) is the target. The order of the remaining operands is
not consistent: in general opcodes with 3 operands that perform math or logical
operations have their operands in reverse order. Opcodes for vector instructions
and those with more than 3 operands usually have operands in the same order except
for the target operand, which is first in PPC64 asm and last in Go asm.

Example:
  ADD R3, R4, R5		<=>	add r5, r4, r3

2. Constant operands

In Go asm, an operand that starts with '$' indicates a constant value. If the
instruction using the constant has an immediate version of the opcode, then an
immediate value is used with the opcode if possible.

Example:
  ADD $1, R3, R4		<=> 	addi r4, r3, 1

3. Opcodes setting condition codes

In PPC64 asm, some instructions other than compares have variations that can set
the condition code where meaningful. This is indicated by adding '.' to the end
of the PPC64 instruction. In Go asm, these instructions have 'CC' at the end of
the opcode. The possible settings of the condition code depend on the instruction.
CR0 is the default for fixed-point instructions; CR1 for floating point; CR6 for
vector instructions.

Example:
  ANDCC R3, R4, R5		<=>	and. r5, r3, r4 (set CR0)

4. Loads and stores from memory

In Go asm, opcodes starting with 'MOV' indicate a load or store. When the target
is a memory reference, then it is a store; when the target is a register and the
source is a memory reference, then it is a load.

MOV{B,H,W,D} variations identify the size as byte, halfword, word, doubleword.

Adding 'Z' to the opcode for a load indicates zero extend; if omitted it is sign extend.
Adding 'U' to a load or store indicates an update of the base register with the offset.
Adding 'BR' to an opcode indicates byte-reversed load or store, or the order opposite
of the expected endian order. If 'BR' is used then zero extend is assumed.

Memory references n(Ra) indicate the address in Ra + n. When used with an update form
of an opcode, the value in Ra is incremented by n.

Memory references (Ra+Rb) or (Ra)(Rb) indicate the address Ra + Rb, used by indexed
loads or stores. Both forms are accepted. When used with an update then the base register
is updated by the value in the index register.

Examples:
  MOVD (R3), R4		<=>	ld r4,0(r3)
  MOVW (R3), R4		<=>	lwa r4,0(r3)
  MOVWZU 4(R3), R4		<=>	lwzu r4,4(r3)
  MOVWZ (R3+R5), R4		<=>	lwzx r4,r3,r5
  MOVHZ  (R3), R4		<=>	lhz r4,0(r3)
  MOVHU 2(R3), R4		<=>	lhau r4,2(r3)
  MOVBZ (R3), R4		<=>	lbz r4,0(r3)

  MOVD R4,(R3)		<=>	std r4,0(r3)
  MOVW R4,(R3)		<=>	stw r4,0(r3)
  MOVW R4,(R3+R5)		<=>	stwx r4,r3,r5
  MOVWU R4,4(R3)		<=>	stwu r4,4(r3)
  MOVH R4,2(R3)		<=>	sth r4,2(r3)
  MOVBU R4,(R3)(R5)		<=>	stbux r4,r3,r5

4. Compares

When an instruction does a compare or other operation that might
result in a condition code, then the resulting condition is set
in a field of the condition register. The condition register consists
of 8 4-bit fields named CR0 - CR7. When a compare instruction
identifies a CR then the resulting condition is set in that field
to be read by a later branch or isel instruction. Within these fields,
bits are set to indicate less than, greater than, or equal conditions.

Once an instruction sets a condition, then a subsequent branch, isel or
other instruction can read the condition field and operate based on the
bit settings.

Examples:
  CMP R3, R4			<=>	cmp r3, r4	(CR0 assumed)
  CMP R3, R4, CR1		<=>	cmp cr1, r3, r4

Note that the condition register is the target operand of compare opcodes, so
the remaining operands are in the same order for Go asm and PPC64 asm.
When CR0 is used then it is implicit and does not need to be specified.

5. Branches

  Many branches are represented as a form of the BC instruction. There are
  other extended opcodes to make it easier to see what type of branch is being
  used.

  The following is a brief description of the BC instruction and its commonly
  used operands.

  BC op1, op2, op3

    op1: type of branch
        16 -> bctr (branch on ctr)
        12 -> bcr  (branch if cr bit is set)
        8  -> bcr+bctr (branch on ctr and cr values)
	4  -> bcr != 0 (branch if specified cr bit is not set)

	There are more combinations but these are the most common.

    op2: condition register field and condition bit

	This contains an immediate value indicating which condition field
	to read and what bits to test. Each field is 4 bits long with CR0
        at bit 0, CR1 at bit 4, etc. The value is computed as 4*CR+condition
        with these condition values:

        0 -> LT
        1 -> GT
        2 -> EQ
        3 -> OVG

	Thus 0 means test CR0 for LT, 5 means CR1 for GT, 30 means CR7 for EQ.

    op3: branch target

  Examples:

    BC 12, 0, target		<=>	blt cr0, target
    BC 12, 2, target		<=>	beq cr0, target
    BC 12, 5, target		<=>	bgt cr1, target
    BC 12, 30, target		<=>	beq cr7, target
    BC 4, 6, target		<=>	bne cr1, target
    BC 4, 1, target		<=>	ble cr1, target

    The following extended opcodes are available for ease of use and readability:

    BNE CR2, target		<=>	bne cr2, target
    BEQ CR4, target		<=>	beq cr4, target
    BLT target			<=>	blt target (cr0 default)
    BGE CR7, target		<=>	bge cr7, target

  Refer to the ISA for more information on additional values for the BC instruction,
  how to handle OVG information, and much more.

5. Align directive

Starting with Go 1.12, Go asm supports the PCALIGN directive, which indicates
that the next instruction should be aligned to the specified value. Currently
8 and 16 are the only supported values, and a maximum of 2 NOPs will be added
to align the code. That means in the case where the code is aligned to 4 but
PCALIGN $16 is at that location, the code will only be aligned to 8 to avoid
adding 3 NOPs.

The purpose of this directive is to improve performance for cases like loops
where better alignment (8 or 16 instead of 4) might be helpful. This directive
exists in PPC64 assembler and is frequently used by PPC64 assembler writers.

PCALIGN $16
PCALIGN $8

Functions in Go are aligned to 16 bytes, as is the case in all other compilers
for PPC64.

6. Shift instructions

The simple scalar shifts on PPC64 expect a shift count that fits in 5 bits for
32-bit values or 6 bit for 64-bit values. If the shift count is a constant value
greater than the max then the assembler sets it to the max for that size (31 for
32 bit values, 63 for 64 bit values). If the shift count is in a register, then
only the low 5 or 6 bits of the register will be used as the shift count. The
Go compiler will add appropriate code to compare the shift value to achieve the
the correct result, and the assembler does not add extra checking.

Examples:

  SRAD $8,R3,R4		=>	sradi r4,r3,8
  SRD $8,R3,R4		=>	rldicl r4,r3,56,8
  SLD $8,R3,R4		=>	rldicr r4,r3,8,55
  SRAW $16,R4,R5		=>	srawi r5,r4,16
  SRW $40,R4,R5		=>	rlwinm r5,r4,0,0,31
  SLW $12,R4,R5		=>	rlwinm r5,r4,12,0,19

Some non-simple shifts have operands in the Go assembly which don't map directly
onto operands in the PPC64 assembly. When an operand in a shift instruction in the
Go assembly is a bit mask, that mask is represented as a start and end bit in the
PPC64 assembly instead of a mask. See the ISA for more detail on these types of shifts.
Here are a few examples:

  RLWMI $7,R3,$65535,R6 	=>	rlwimi r6,r3,7,16,31
  RLDMI $0,R4,$7,R6 		=>	rldimi r6,r4,0,61

More recently, Go opcodes were added which map directly onto the PPC64 opcodes. It is
recommended to use the newer opcodes to avoid confusion.

  RLDICL $0,R4,$15,R6		=>	rldicl r6,r4,0,15
  RLDICR $0,R4,$15,R6		=>	rldicr r6.r4,0,15

Register naming

1. Special register usage in Go asm

The following registers should not be modified by user Go assembler code.

R0: Go code expects this register to contain the value 0.
R1: Stack pointer
R2: TOC pointer when compiled with -shared or -dynlink (a.k.a position independent code)
R13: TLS pointer
R30: g (goroutine)

Register names:

Rn is used for general purpose registers. (0-31)
Fn is used for floating point registers. (0-31)
Vn is used for vector registers. Slot 0 of Vn overlaps with Fn. (0-31)
VSn is used for vector-scalar registers. V0-V31 overlap with VS32-VS63. (0-63)
CTR represents the count register.
LR represents the link register.

Index

Constants

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

* powerpc 64

View Source
const (
	/* RBasePPC64 = 4096 */
	/* R0=4096 ... R31=4127 */
	REG_R0 = obj.RBasePPC64 + 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

	/* F0=4128 ... F31=4159 */
	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

	/* V0=4160 ... V31=4191 */
	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

	/* VS0=4192 ... VS63=4255 */
	REG_VS0
	REG_VS1
	REG_VS2
	REG_VS3
	REG_VS4
	REG_VS5
	REG_VS6
	REG_VS7
	REG_VS8
	REG_VS9
	REG_VS10
	REG_VS11
	REG_VS12
	REG_VS13
	REG_VS14
	REG_VS15
	REG_VS16
	REG_VS17
	REG_VS18
	REG_VS19
	REG_VS20
	REG_VS21
	REG_VS22
	REG_VS23
	REG_VS24
	REG_VS25
	REG_VS26
	REG_VS27
	REG_VS28
	REG_VS29
	REG_VS30
	REG_VS31
	REG_VS32
	REG_VS33
	REG_VS34
	REG_VS35
	REG_VS36
	REG_VS37
	REG_VS38
	REG_VS39
	REG_VS40
	REG_VS41
	REG_VS42
	REG_VS43
	REG_VS44
	REG_VS45
	REG_VS46
	REG_VS47
	REG_VS48
	REG_VS49
	REG_VS50
	REG_VS51
	REG_VS52
	REG_VS53
	REG_VS54
	REG_VS55
	REG_VS56
	REG_VS57
	REG_VS58
	REG_VS59
	REG_VS60
	REG_VS61
	REG_VS62
	REG_VS63

	REG_CR0
	REG_CR1
	REG_CR2
	REG_CR3
	REG_CR4
	REG_CR5
	REG_CR6
	REG_CR7

	REG_MSR
	REG_FPSCR
	REG_CR

	REG_SPECIAL = REG_CR0

	REG_SPR0 = obj.RBasePPC64 + 1024 // first of 1024 registers
	REG_DCR0 = obj.RBasePPC64 + 2048 // first of 1024 registers

	REG_XER = REG_SPR0 + 1
	REG_LR  = REG_SPR0 + 8
	REG_CTR = REG_SPR0 + 9

	REGZERO = REG_R0 /* set to zero */
	REGSP   = REG_R1
	REGSB   = REG_R2
	REGRET  = REG_R3
	REGARG  = -1      /* -1 disables passing the first argument in register */
	REGRT1  = REG_R3  /* reserved for runtime, duffzero and duffcopy */
	REGRT2  = REG_R4  /* reserved for runtime, duffcopy */
	REGMIN  = REG_R7  /* register variables allocated from here to REGMAX */
	REGCTXT = REG_R11 /* context for closures */
	REGTLS  = REG_R13 /* C ABI TLS base pointer */
	REGMAX  = REG_R27
	REGEXT  = REG_R30 /* external registers allocated from here down */
	REGG    = REG_R30 /* G */
	REGTMP  = REG_R31 /* used by the linker */
	FREGRET = REG_F0
	FREGMIN = REG_F17 /* first register variable */
	FREGMAX = REG_F26 /* last register variable for 9g only */
	FREGEXT = REG_F26 /* first external register */
)
View Source
const (
	/* mark flags */
	LABEL   = 1 << 0
	LEAF    = 1 << 1
	FLOAT   = 1 << 2
	BRANCH  = 1 << 3
	LOAD    = 1 << 4
	FCMP    = 1 << 5
	SYNC    = 1 << 6
	LIST    = 1 << 7
	FOLL    = 1 << 8
	NOSCHED = 1 << 9
)
View Source
const (
	BI_CR0 = 0
	BI_CR1 = 4
	BI_CR2 = 8
	BI_CR3 = 12
	BI_CR4 = 16
	BI_CR5 = 20
	BI_CR6 = 24
	BI_CR7 = 28
	BI_LT  = 0
	BI_GT  = 1
	BI_EQ  = 2
	BI_OVF = 3
)
View Source
const (
	BO_BCTR     = 16 // branch on ctr value
	BO_BCR      = 12 // branch on cr value
	BO_BCRBCTR  = 8  // branch on ctr and cr value
	BO_NOTBCR   = 4  // branch on not cr value
	BO_UNLIKELY = 2  // value for unlikely
	BO_LIKELY   = 3  // value for likely
)
View Source
const (
	C_COND_LT = iota // 0 result is negative
	C_COND_GT        // 1 result is positive
	C_COND_EQ        // 2 result is zero
	C_COND_SO        // 3 summary overflow or FP compare w/ NaN
)
View Source
const (
	C_NONE = iota
	C_REG
	C_FREG
	C_VREG
	C_VSREG
	C_CREG
	C_SPR /* special processor register */
	C_ZCON
	C_SCON   /* 16 bit signed */
	C_UCON   /* 32 bit signed, low 16 bits 0 */
	C_ADDCON /* -0x8000 <= v < 0 */
	C_ANDCON /* 0 < v <= 0xFFFF */
	C_LCON   /* other 32 */
	C_DCON   /* other 64 (could subdivide further) */
	C_SACON  /* $n(REG) where n <= int16 */
	C_SECON
	C_LACON /* $n(REG) where int16 < n <= int32 */
	C_LECON
	C_DACON /* $n(REG) where int32 < n */
	C_SBRA
	C_LBRA
	C_LBRAPIC
	C_SAUTO
	C_LAUTO
	C_SEXT
	C_LEXT
	C_ZOREG // conjecture: either (1) register + zeroed offset, or (2) "R0" implies zero or C_REG
	C_SOREG // register + signed offset
	C_LOREG
	C_FPSCR
	C_MSR
	C_XER
	C_LR
	C_CTR
	C_ANY
	C_GOK
	C_ADDR
	C_GOTADDR
	C_TOCADDR
	C_TLS_LE
	C_TLS_IE
	C_TEXTSIZE

	C_NCLASS /* must be the last */
)
View Source
const (
	AADD = obj.ABasePPC64 + obj.A_ARCHSPECIFIC + iota
	AADDCC
	AADDIS
	AADDV
	AADDVCC
	AADDC
	AADDCCC
	AADDCV
	AADDCVCC
	AADDME
	AADDMECC
	AADDMEVCC
	AADDMEV
	AADDE
	AADDECC
	AADDEVCC
	AADDEV
	AADDZE
	AADDZECC
	AADDZEVCC
	AADDZEV
	AADDEX
	AAND
	AANDCC
	AANDN
	AANDNCC
	AANDISCC
	ABC
	ABCL
	ABEQ
	ABGE // not LT = G/E/U
	ABGT
	ABLE // not GT = L/E/U
	ABLT
	ABNE // not EQ = L/G/U
	ABVC // Unordered-clear
	ABVS // Unordered-set
	ACMP
	ACMPU
	ACMPEQB
	ACNTLZW
	ACNTLZWCC
	ACRAND
	ACRANDN
	ACREQV
	ACRNAND
	ACRNOR
	ACROR
	ACRORN
	ACRXOR
	ADIVW
	ADIVWCC
	ADIVWVCC
	ADIVWV
	ADIVWU
	ADIVWUCC
	ADIVWUVCC
	ADIVWUV
	AMODUD
	AMODUW
	AMODSD
	AMODSW
	AEQV
	AEQVCC
	AEXTSB
	AEXTSBCC
	AEXTSH
	AEXTSHCC
	AFABS
	AFABSCC
	AFADD
	AFADDCC
	AFADDS
	AFADDSCC
	AFCMPO
	AFCMPU
	AFCTIW
	AFCTIWCC
	AFCTIWZ
	AFCTIWZCC
	AFDIV
	AFDIVCC
	AFDIVS
	AFDIVSCC
	AFMADD
	AFMADDCC
	AFMADDS
	AFMADDSCC
	AFMOVD
	AFMOVDCC
	AFMOVDU
	AFMOVS
	AFMOVSU
	AFMOVSX
	AFMOVSZ
	AFMSUB
	AFMSUBCC
	AFMSUBS
	AFMSUBSCC
	AFMUL
	AFMULCC
	AFMULS
	AFMULSCC
	AFNABS
	AFNABSCC
	AFNEG
	AFNEGCC
	AFNMADD
	AFNMADDCC
	AFNMADDS
	AFNMADDSCC
	AFNMSUB
	AFNMSUBCC
	AFNMSUBS
	AFNMSUBSCC
	AFRSP
	AFRSPCC
	AFSUB
	AFSUBCC
	AFSUBS
	AFSUBSCC
	AISEL
	AMOVMW
	ALBAR
	ALHAR
	ALSW
	ALWAR
	ALWSYNC
	AMOVDBR
	AMOVWBR
	AMOVB
	AMOVBU
	AMOVBZ
	AMOVBZU
	AMOVH
	AMOVHBR
	AMOVHU
	AMOVHZ
	AMOVHZU
	AMOVW
	AMOVWU
	AMOVFL
	AMOVCRFS
	AMTFSB0
	AMTFSB0CC
	AMTFSB1
	AMTFSB1CC
	AMULHW
	AMULHWCC
	AMULHWU
	AMULHWUCC
	AMULLW
	AMULLWCC
	AMULLWVCC
	AMULLWV
	ANAND
	ANANDCC
	ANEG
	ANEGCC
	ANEGVCC
	ANEGV
	ANOR
	ANORCC
	AOR
	AORCC
	AORN
	AORNCC
	AORIS
	AREM
	AREMU
	ARFI
	ARLWMI
	ARLWMICC
	ARLWNM
	ARLWNMCC
	ACLRLSLWI
	ASLW
	ASLWCC
	ASRW
	ASRAW
	ASRAWCC
	ASRWCC
	ASTBCCC
	ASTHCCC
	ASTSW
	ASTWCCC
	ASUB
	ASUBCC
	ASUBVCC
	ASUBC
	ASUBCCC
	ASUBCV
	ASUBCVCC
	ASUBME
	ASUBMECC
	ASUBMEVCC
	ASUBMEV
	ASUBV
	ASUBE
	ASUBECC
	ASUBEV
	ASUBEVCC
	ASUBZE
	ASUBZECC
	ASUBZEVCC
	ASUBZEV
	ASYNC
	AXOR
	AXORCC
	AXORIS

	ADCBF
	ADCBI
	ADCBST
	ADCBT
	ADCBTST
	ADCBZ
	AECIWX
	AECOWX
	AEIEIO
	AICBI
	AISYNC
	APTESYNC
	ATLBIE
	ATLBIEL
	ATLBSYNC
	ATW

	ASYSCALL
	AWORD

	ARFCI

	AFCPSGN
	AFCPSGNCC
	/* optional on 32-bit */
	AFRES
	AFRESCC
	AFRIM
	AFRIMCC
	AFRIP
	AFRIPCC
	AFRIZ
	AFRIZCC
	AFRIN
	AFRINCC
	AFRSQRTE
	AFRSQRTECC
	AFSEL
	AFSELCC
	AFSQRT
	AFSQRTCC
	AFSQRTS
	AFSQRTSCC

	ACNTLZD
	ACNTLZDCC
	ACMPW /* CMP with L=0 */
	ACMPWU
	ACMPB
	AFTDIV
	AFTSQRT
	ADIVD
	ADIVDCC
	ADIVDE
	ADIVDECC
	ADIVDEU
	ADIVDEUCC
	ADIVDVCC
	ADIVDV
	ADIVDU
	ADIVDUCC
	ADIVDUVCC
	ADIVDUV
	AEXTSW
	AEXTSWCC
	/* AFCFIW; AFCFIWCC */
	AFCFID
	AFCFIDCC
	AFCFIDU
	AFCFIDUCC
	AFCFIDS
	AFCFIDSCC
	AFCTID
	AFCTIDCC
	AFCTIDZ
	AFCTIDZCC
	ALDAR
	AMOVD
	AMOVDU
	AMOVWZ
	AMOVWZU
	AMULHD
	AMULHDCC
	AMULHDU
	AMULHDUCC
	AMULLD
	AMULLDCC
	AMULLDVCC
	AMULLDV
	ARFID
	ARLDMI
	ARLDMICC
	ARLDIMI
	ARLDIMICC
	ARLDC
	ARLDCCC
	ARLDCR
	ARLDCRCC
	ARLDICR
	ARLDICRCC
	ARLDCL
	ARLDCLCC
	ARLDICL
	ARLDICLCC
	ARLDIC
	ARLDICCC
	ACLRLSLDI
	AROTL
	AROTLW
	ASLBIA
	ASLBIE
	ASLBMFEE
	ASLBMFEV
	ASLBMTE
	ASLD
	ASLDCC
	ASRD
	ASRAD
	ASRADCC
	ASRDCC
	AEXTSWSLI
	AEXTSWSLICC
	ASTDCCC
	ATD

	/* 64-bit pseudo operation */
	ADWORD
	AREMD
	AREMDU

	/* more 64-bit operations */
	AHRFID
	APOPCNTD
	APOPCNTW
	APOPCNTB
	ACNTTZW
	ACNTTZWCC
	ACNTTZD
	ACNTTZDCC
	ACOPY
	APASTECC
	ADARN
	ALDMX
	AMADDHD
	AMADDHDU
	AMADDLD

	/* Vector */
	ALV
	ALVEBX
	ALVEHX
	ALVEWX
	ALVX
	ALVXL
	ALVSL
	ALVSR
	ASTV
	ASTVEBX
	ASTVEHX
	ASTVEWX
	ASTVX
	ASTVXL
	AVAND
	AVANDC
	AVNAND
	AVOR
	AVORC
	AVNOR
	AVXOR
	AVEQV
	AVADDUM
	AVADDUBM
	AVADDUHM
	AVADDUWM
	AVADDUDM
	AVADDUQM
	AVADDCU
	AVADDCUQ
	AVADDCUW
	AVADDUS
	AVADDUBS
	AVADDUHS
	AVADDUWS
	AVADDSS
	AVADDSBS
	AVADDSHS
	AVADDSWS
	AVADDE
	AVADDEUQM
	AVADDECUQ
	AVSUBUM
	AVSUBUBM
	AVSUBUHM
	AVSUBUWM
	AVSUBUDM
	AVSUBUQM
	AVSUBCU
	AVSUBCUQ
	AVSUBCUW
	AVSUBUS
	AVSUBUBS
	AVSUBUHS
	AVSUBUWS
	AVSUBSS
	AVSUBSBS
	AVSUBSHS
	AVSUBSWS
	AVSUBE
	AVSUBEUQM
	AVSUBECUQ
	AVMULESB
	AVMULOSB
	AVMULEUB
	AVMULOUB
	AVMULESH
	AVMULOSH
	AVMULEUH
	AVMULOUH
	AVMULESW
	AVMULOSW
	AVMULEUW
	AVMULOUW
	AVMULUWM
	AVPMSUM
	AVPMSUMB
	AVPMSUMH
	AVPMSUMW
	AVPMSUMD
	AVMSUMUDM
	AVR
	AVRLB
	AVRLH
	AVRLW
	AVRLD
	AVS
	AVSLB
	AVSLH
	AVSLW
	AVSL
	AVSLO
	AVSRB
	AVSRH
	AVSRW
	AVSR
	AVSRO
	AVSLD
	AVSRD
	AVSA
	AVSRAB
	AVSRAH
	AVSRAW
	AVSRAD
	AVSOI
	AVSLDOI
	AVCLZ
	AVCLZB
	AVCLZH
	AVCLZW
	AVCLZD
	AVPOPCNT
	AVPOPCNTB
	AVPOPCNTH
	AVPOPCNTW
	AVPOPCNTD
	AVCMPEQ
	AVCMPEQUB
	AVCMPEQUBCC
	AVCMPEQUH
	AVCMPEQUHCC
	AVCMPEQUW
	AVCMPEQUWCC
	AVCMPEQUD
	AVCMPEQUDCC
	AVCMPGT
	AVCMPGTUB
	AVCMPGTUBCC
	AVCMPGTUH
	AVCMPGTUHCC
	AVCMPGTUW
	AVCMPGTUWCC
	AVCMPGTUD
	AVCMPGTUDCC
	AVCMPGTSB
	AVCMPGTSBCC
	AVCMPGTSH
	AVCMPGTSHCC
	AVCMPGTSW
	AVCMPGTSWCC
	AVCMPGTSD
	AVCMPGTSDCC
	AVCMPNEZB
	AVCMPNEZBCC
	AVCMPNEB
	AVCMPNEBCC
	AVCMPNEH
	AVCMPNEHCC
	AVCMPNEW
	AVCMPNEWCC
	AVPERM
	AVPERMXOR
	AVPERMR
	AVBPERMQ
	AVBPERMD
	AVSEL
	AVSPLT
	AVSPLTB
	AVSPLTH
	AVSPLTW
	AVSPLTI
	AVSPLTISB
	AVSPLTISH
	AVSPLTISW
	AVCIPH
	AVCIPHER
	AVCIPHERLAST
	AVNCIPH
	AVNCIPHER
	AVNCIPHERLAST
	AVSBOX
	AVSHASIGMA
	AVSHASIGMAW
	AVSHASIGMAD
	AVMRGEW
	AVMRGOW

	/* VSX */
	ALXV
	ALXVL
	ALXVLL
	ALXVD2X
	ALXVW4X
	ALXVH8X
	ALXVB16X
	ALXVX
	ALXVDSX
	ASTXV
	ASTXVL
	ASTXVLL
	ASTXVD2X
	ASTXVW4X
	ASTXVH8X
	ASTXVB16X
	ASTXVX
	ALXSDX
	ASTXSDX
	ALXSIWAX
	ALXSIWZX
	ASTXSIWX
	AMFVSRD
	AMFFPRD
	AMFVRD
	AMFVSRWZ
	AMFVSRLD
	AMTVSRD
	AMTFPRD
	AMTVRD
	AMTVSRWA
	AMTVSRWZ
	AMTVSRDD
	AMTVSRWS
	AXXLAND
	AXXLANDC
	AXXLEQV
	AXXLNAND
	AXXLOR
	AXXLORC
	AXXLNOR
	AXXLORQ
	AXXLXOR
	AXXSEL
	AXXMRGHW
	AXXMRGLW
	AXXSPLT
	AXXSPLTW
	AXXSPLTIB
	AXXPERM
	AXXPERMDI
	AXXSLDWI
	AXXBRQ
	AXXBRD
	AXXBRW
	AXXBRH
	AXSCVDPSP
	AXSCVSPDP
	AXSCVDPSPN
	AXSCVSPDPN
	AXVCVDPSP
	AXVCVSPDP
	AXSCVDPSXDS
	AXSCVDPSXWS
	AXSCVDPUXDS
	AXSCVDPUXWS
	AXSCVSXDDP
	AXSCVUXDDP
	AXSCVSXDSP
	AXSCVUXDSP
	AXVCVDPSXDS
	AXVCVDPSXWS
	AXVCVDPUXDS
	AXVCVDPUXWS
	AXVCVSPSXDS
	AXVCVSPSXWS
	AXVCVSPUXDS
	AXVCVSPUXWS
	AXVCVSXDDP
	AXVCVSXWDP
	AXVCVUXDDP
	AXVCVUXWDP
	AXVCVSXDSP
	AXVCVSXWSP
	AXVCVUXDSP
	AXVCVUXWSP

	ALAST

	// aliases
	ABR = obj.AJMP
	ABL = obj.ACALL
)
View Source
const (
	/* each rhs is OPVCC(_, _, _, _) */
	OP_ADD      = 31<<26 | 266<<1 | 0<<10 | 0
	OP_ADDI     = 14<<26 | 0<<1 | 0<<10 | 0
	OP_ADDIS    = 15<<26 | 0<<1 | 0<<10 | 0
	OP_ANDI     = 28<<26 | 0<<1 | 0<<10 | 0
	OP_EXTSB    = 31<<26 | 954<<1 | 0<<10 | 0
	OP_EXTSH    = 31<<26 | 922<<1 | 0<<10 | 0
	OP_EXTSW    = 31<<26 | 986<<1 | 0<<10 | 0
	OP_ISEL     = 31<<26 | 15<<1 | 0<<10 | 0
	OP_MCRF     = 19<<26 | 0<<1 | 0<<10 | 0
	OP_MCRFS    = 63<<26 | 64<<1 | 0<<10 | 0
	OP_MCRXR    = 31<<26 | 512<<1 | 0<<10 | 0
	OP_MFCR     = 31<<26 | 19<<1 | 0<<10 | 0
	OP_MFFS     = 63<<26 | 583<<1 | 0<<10 | 0
	OP_MFMSR    = 31<<26 | 83<<1 | 0<<10 | 0
	OP_MFSPR    = 31<<26 | 339<<1 | 0<<10 | 0
	OP_MFSR     = 31<<26 | 595<<1 | 0<<10 | 0
	OP_MFSRIN   = 31<<26 | 659<<1 | 0<<10 | 0
	OP_MTCRF    = 31<<26 | 144<<1 | 0<<10 | 0
	OP_MTFSF    = 63<<26 | 711<<1 | 0<<10 | 0
	OP_MTFSFI   = 63<<26 | 134<<1 | 0<<10 | 0
	OP_MTMSR    = 31<<26 | 146<<1 | 0<<10 | 0
	OP_MTMSRD   = 31<<26 | 178<<1 | 0<<10 | 0
	OP_MTSPR    = 31<<26 | 467<<1 | 0<<10 | 0
	OP_MTSR     = 31<<26 | 210<<1 | 0<<10 | 0
	OP_MTSRIN   = 31<<26 | 242<<1 | 0<<10 | 0
	OP_MULLW    = 31<<26 | 235<<1 | 0<<10 | 0
	OP_MULLD    = 31<<26 | 233<<1 | 0<<10 | 0
	OP_OR       = 31<<26 | 444<<1 | 0<<10 | 0
	OP_ORI      = 24<<26 | 0<<1 | 0<<10 | 0
	OP_ORIS     = 25<<26 | 0<<1 | 0<<10 | 0
	OP_RLWINM   = 21<<26 | 0<<1 | 0<<10 | 0
	OP_RLWNM    = 23<<26 | 0<<1 | 0<<10 | 0
	OP_SUBF     = 31<<26 | 40<<1 | 0<<10 | 0
	OP_RLDIC    = 30<<26 | 4<<1 | 0<<10 | 0
	OP_RLDICR   = 30<<26 | 2<<1 | 0<<10 | 0
	OP_RLDICL   = 30<<26 | 0<<1 | 0<<10 | 0
	OP_RLDCL    = 30<<26 | 8<<1 | 0<<10 | 0
	OP_EXTSWSLI = 31<<26 | 445<<2
)
View Source
const (
	D_FORM = iota
	DS_FORM
)
View Source
const (
	BIG = 32768 - 8
)

* GENERAL: * * compiler allocates R3 up as temps * compiler allocates register variables R7-R27 * compiler allocates external registers R30 down * * compiler allocates register variables F17-F26 * compiler allocates external registers F26 down

Variables

View Source
var Anames = []string{}/* 609 elements not displayed */
View Source
var Linkppc64 = obj.LinkArch{
	Arch:           sys.ArchPPC64,
	Init:           buildop,
	Preprocess:     preprocess,
	Assemble:       span9,
	Progedit:       progedit,
	DWARFRegisters: PPC64DWARFRegisters,
}
View Source
var Linkppc64le = obj.LinkArch{
	Arch:           sys.ArchPPC64LE,
	Init:           buildop,
	Preprocess:     preprocess,
	Assemble:       span9,
	Progedit:       progedit,
	DWARFRegisters: PPC64DWARFRegisters,
}
View Source
var PPC64DWARFRegisters = map[int16]int16{}

OpenPOWER ABI for Linux Supplement Power Architecture 64-Bit ELF V2 ABI https://openpowerfoundation.org/?resource_lib=64-bit-elf-v2-abi-specification-power-architecture

Functions

func AOP_DQ added in go1.14

func AOP_DQ(op uint32, d uint32, a uint32, b uint32) uint32

DQ-form, VSR register, register + offset operands

func AOP_EXTSWSLI added in go1.16

func AOP_EXTSWSLI(op uint32, a uint32, s uint32, sh uint32) uint32

func AOP_IIRR added in go1.8

func AOP_IIRR(op uint32, d uint32, a uint32, sbit uint32, simm uint32) uint32

VX-form 2-register + ST + SIX operands

func AOP_IR added in go1.8

func AOP_IR(op uint32, d uint32, simm uint32) uint32

VX-form 1-register + SIM operands

func AOP_IRR

func AOP_IRR(op uint32, d uint32, a uint32, simm uint32) uint32

func AOP_IRRR added in go1.8

func AOP_IRRR(op uint32, d uint32, a uint32, b uint32, simm uint32) uint32

VA-form 3-register + SHB operands

func AOP_ISEL added in go1.8

func AOP_ISEL(op uint32, t uint32, a uint32, b uint32, bc uint32) uint32

func AOP_RLDIC added in go1.9

func AOP_RLDIC(op uint32, a uint32, s uint32, sh uint32, m uint32) uint32

func AOP_RR added in go1.8

func AOP_RR(op uint32, d uint32, a uint32) uint32

VX-form 2-register operands, r/none/r

func AOP_RRR

func AOP_RRR(op uint32, d uint32, a uint32, b uint32) uint32

the order is dest, a/s, b/imm for both arithmetic and logical operations

func AOP_RRRI added in go1.11

func AOP_RRRI(op uint32, d uint32, a uint32, b uint32, c uint32) uint32

X-form, 3-register operands + EH field

func AOP_RRRR added in go1.8

func AOP_RRRR(op uint32, d uint32, a uint32, b uint32, c uint32) uint32

VA-form 4-register operands

func AOP_VIRR added in go1.8

func AOP_VIRR(op uint32, d uint32, a uint32, simm uint32) uint32

VX-form 2-register + UIM operands

func AOP_XX1 added in go1.8

func AOP_XX1(op uint32, d uint32, a uint32, b uint32) uint32

XX1-form 3-register operands, 1 VSR operand

func AOP_XX2 added in go1.8

func AOP_XX2(op uint32, d uint32, a uint32, b uint32) uint32

XX2-form 3-register operands, 2 VSR operands

func AOP_XX3 added in go1.8

func AOP_XX3(op uint32, d uint32, a uint32, b uint32) uint32

XX3-form 3 VSR operands

func AOP_XX3I added in go1.8

func AOP_XX3I(op uint32, d uint32, a uint32, b uint32, c uint32) uint32

XX3-form 3 VSR operands + immediate

func AOP_XX4 added in go1.8

func AOP_XX4(op uint32, d uint32, a uint32, b uint32, c uint32) uint32

XX4-form, 4 VSR operands

func AOP_Z23I added in go1.10

func AOP_Z23I(op uint32, d uint32, a uint32, b uint32, c uint32) uint32

Z23-form, 3-register operands + CY field

func DRconv

func DRconv(a int) string

func LOP_IRR

func LOP_IRR(op uint32, a uint32, s uint32, uimm uint32) uint32

func LOP_RRR

func LOP_RRR(op uint32, a uint32, s uint32, b uint32) uint32

func OPCC

func OPCC(o uint32, xo uint32, rc uint32) uint32

func OPDQ added in go1.14

func OPDQ(o uint32, xo uint32, oe uint32) uint32

func OPVC added in go1.8

func OPVC(o uint32, xo uint32, oe uint32, rc uint32) uint32

func OPVCC

func OPVCC(o uint32, xo uint32, oe uint32, rc uint32) uint32

func OPVX added in go1.8

func OPVX(o uint32, xo uint32, oe uint32, rc uint32) uint32

func OPVXX1 added in go1.8

func OPVXX1(o uint32, xo uint32, oe uint32) uint32

func OPVXX2 added in go1.8

func OPVXX2(o uint32, xo uint32, oe uint32) uint32

func OPVXX2VA added in go1.15

func OPVXX2VA(o uint32, xo uint32, oe uint32) uint32

func OPVXX3 added in go1.8

func OPVXX3(o uint32, xo uint32, oe uint32) uint32

func OPVXX4 added in go1.8

func OPVXX4(o uint32, xo uint32, oe uint32) uint32

func OP_BC

func OP_BC(op uint32, bo uint32, bi uint32, bd uint32, aa uint32) uint32

func OP_BCR

func OP_BCR(op uint32, bo uint32, bi uint32) uint32

func OP_BR

func OP_BR(op uint32, li uint32, aa uint32) uint32

func OP_RLW

func OP_RLW(op uint32, a uint32, s uint32, sh uint32, mb uint32, me uint32) uint32

Types

type Optab

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

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