s390x

package
v1.20.1 Latest Latest
Warning

This package is not in the latest version of its module.

Go to latest
Published: Feb 17, 2023 License: BSD-3-Clause Imports: 8 Imported by: 0

Documentation

Index

Constants

View Source
const (
	NSNAME = 8
	NSYM   = 50
	NREG   = 16 // number of general purpose registers
	NFREG  = 16 // number of floating point registers
)
View Source
const (
	// General purpose registers (GPRs).
	REG_R0 = obj.RBaseS390X + 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

	// Floating point registers (FPRs).
	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

	// Vector registers (VRs) - only available when the vector
	// facility is installed.
	// V0-V15 are aliases for F0-F15.
	// We keep them in a separate space to make printing etc. easier
	// If the code generator ever emits vector instructions it will
	// need to take into account the aliasing.
	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

	// Access registers (ARs).
	// The thread pointer is typically stored in the register pair
	// AR0 and AR1.
	REG_AR0
	REG_AR1
	REG_AR2
	REG_AR3
	REG_AR4
	REG_AR5
	REG_AR6
	REG_AR7
	REG_AR8
	REG_AR9
	REG_AR10
	REG_AR11
	REG_AR12
	REG_AR13
	REG_AR14
	REG_AR15

	REG_RESERVED // end of allocated registers

	REGARG  = -1      // -1 disables passing the first argument in register
	REGRT1  = REG_R3  // used during zeroing of the stack - not reserved
	REGRT2  = REG_R4  // used during zeroing of the stack - not reserved
	REGTMP  = REG_R10 // scratch register used in the assembler and linker
	REGTMP2 = REG_R11 // scratch register used in the assembler and linker
	REGCTXT = REG_R12 // context for closures
	REGG    = REG_R13 // G
	REG_LR  = REG_R14 // link register
	REGSP   = REG_R15 // stack pointer
)
View Source
const (
	BIG    = 32768 - 8
	DISP12 = 4096
	DISP16 = 65536
	DISP20 = 1048576
)
View Source
const (
	// mark flags
	LEAF = 1 << iota
	BRANCH
	USETMP // generated code of this Prog uses REGTMP
)
View Source
const (
	C_NONE     = iota
	C_REG      // general-purpose register (64-bit)
	C_FREG     // floating-point register (64-bit)
	C_VREG     // vector register (128-bit)
	C_AREG     // access register (32-bit)
	C_ZCON     // constant == 0
	C_SCON     // 0 <= constant <= 0x7fff (positive int16)
	C_UCON     // constant & 0xffff == 0 (int16 or uint16)
	C_ADDCON   // 0 > constant >= -0x8000 (negative int16)
	C_ANDCON   // constant <= 0xffff
	C_LCON     // constant (int32 or uint32)
	C_DCON     // constant (int64 or uint64)
	C_SACON    // computed address, 16-bit displacement, possibly SP-relative
	C_LACON    // computed address, 32-bit displacement, possibly SP-relative
	C_DACON    // computed address, 64-bit displacement?
	C_SBRA     // short branch
	C_LBRA     // long branch
	C_SAUTO    // short auto
	C_LAUTO    // long auto
	C_ZOREG    // heap address, register-based, displacement == 0
	C_SOREG    // heap address, register-based, int16 displacement
	C_LOREG    // heap address, register-based, int32 displacement
	C_TLS_LE   // TLS - local exec model (for executables)
	C_TLS_IE   // TLS - initial exec model (for shared libraries loaded at program startup)
	C_GOK      // general address
	C_ADDR     // relocation for extern or static symbols (loads and stores)
	C_SYMADDR  // relocation for extern or static symbols (address taking)
	C_GOTADDR  // GOT slot for a symbol in -dynlink mode
	C_TEXTSIZE // text size
	C_ANY
	C_NCLASS // must be the last
)
View Source
const (
	// integer arithmetic
	AADD = obj.ABaseS390X + obj.A_ARCHSPECIFIC + iota
	AADDC
	AADDE
	AADDW
	ADIVW
	ADIVWU
	ADIVD
	ADIVDU
	AMODW
	AMODWU
	AMODD
	AMODDU
	AMULLW
	AMULLD
	AMULHD
	AMULHDU
	AMLGR
	ASUB
	ASUBC
	ASUBV
	ASUBE
	ASUBW
	ANEG
	ANEGW

	// integer moves
	AMOVWBR
	AMOVB
	AMOVBZ
	AMOVH
	AMOVHBR
	AMOVHZ
	AMOVW
	AMOVWZ
	AMOVD
	AMOVDBR

	// conditional moves
	AMOVDEQ
	AMOVDGE
	AMOVDGT
	AMOVDLE
	AMOVDLT
	AMOVDNE
	ALOCR
	ALOCGR

	// find leftmost one
	AFLOGR

	// population count
	APOPCNT

	// integer bitwise
	AAND
	AANDW
	AOR
	AORW
	AXOR
	AXORW
	ASLW
	ASLD
	ASRW
	ASRAW
	ASRD
	ASRAD
	ARLL
	ARLLG
	ARNSBG
	ARXSBG
	AROSBG
	ARNSBGT
	ARXSBGT
	AROSBGT
	ARISBG
	ARISBGN
	ARISBGZ
	ARISBGNZ
	ARISBHG
	ARISBLG
	ARISBHGZ
	ARISBLGZ

	// floating point
	AFABS
	AFADD
	AFADDS
	AFCMPO
	AFCMPU
	ACEBR
	AFDIV
	AFDIVS
	AFMADD
	AFMADDS
	AFMOVD
	AFMOVS
	AFMSUB
	AFMSUBS
	AFMUL
	AFMULS
	AFNABS
	AFNEG
	AFNEGS
	ALEDBR
	ALDEBR
	ALPDFR
	ALNDFR
	AFSUB
	AFSUBS
	AFSQRT
	AFSQRTS
	AFIEBR
	AFIDBR
	ACPSDR
	ALTEBR
	ALTDBR
	ATCEB
	ATCDB

	// move from GPR to FPR and vice versa
	ALDGR
	ALGDR

	// convert from int32/int64 to float/float64
	ACEFBRA
	ACDFBRA
	ACEGBRA
	ACDGBRA

	// convert from float/float64 to int32/int64
	ACFEBRA
	ACFDBRA
	ACGEBRA
	ACGDBRA

	// convert from uint32/uint64 to float/float64
	ACELFBR
	ACDLFBR
	ACELGBR
	ACDLGBR

	// convert from float/float64 to uint32/uint64
	ACLFEBR
	ACLFDBR
	ACLGEBR
	ACLGDBR

	// compare
	ACMP
	ACMPU
	ACMPW
	ACMPWU

	// test under mask
	ATMHH
	ATMHL
	ATMLH
	ATMLL

	// insert program mask
	AIPM

	// set program mask
	ASPM

	// compare and swap
	ACS
	ACSG

	// serialize
	ASYNC

	// branch
	ABC
	ABCL
	ABRC
	ABEQ
	ABGE
	ABGT
	ABLE
	ABLT
	ABLEU
	ABLTU
	ABNE
	ABVC
	ABVS
	ASYSCALL

	// branch on count
	ABRCT
	ABRCTG

	// compare and branch
	ACRJ
	ACGRJ
	ACLRJ
	ACLGRJ
	ACIJ
	ACGIJ
	ACLIJ
	ACLGIJ
	ACMPBEQ
	ACMPBGE
	ACMPBGT
	ACMPBLE
	ACMPBLT
	ACMPBNE
	ACMPUBEQ
	ACMPUBGE
	ACMPUBGT
	ACMPUBLE
	ACMPUBLT
	ACMPUBNE

	// storage-and-storage
	AMVC
	AMVCIN
	ACLC
	AXC
	AOC
	ANC

	// load
	AEXRL
	ALARL
	ALA
	ALAY

	// interlocked load and op
	ALAA
	ALAAG
	ALAAL
	ALAALG
	ALAN
	ALANG
	ALAX
	ALAXG
	ALAO
	ALAOG

	// load/store multiple
	ALMY
	ALMG
	ASTMY
	ASTMG

	// store clock
	ASTCK
	ASTCKC
	ASTCKE
	ASTCKF

	// macros
	ACLEAR

	// vector
	AVA
	AVAB
	AVAH
	AVAF
	AVAG
	AVAQ
	AVACC
	AVACCB
	AVACCH
	AVACCF
	AVACCG
	AVACCQ
	AVAC
	AVACQ
	AVACCC
	AVACCCQ
	AVN
	AVNC
	AVAVG
	AVAVGB
	AVAVGH
	AVAVGF
	AVAVGG
	AVAVGL
	AVAVGLB
	AVAVGLH
	AVAVGLF
	AVAVGLG
	AVCKSM
	AVCEQ
	AVCEQB
	AVCEQH
	AVCEQF
	AVCEQG
	AVCEQBS
	AVCEQHS
	AVCEQFS
	AVCEQGS
	AVCH
	AVCHB
	AVCHH
	AVCHF
	AVCHG
	AVCHBS
	AVCHHS
	AVCHFS
	AVCHGS
	AVCHL
	AVCHLB
	AVCHLH
	AVCHLF
	AVCHLG
	AVCHLBS
	AVCHLHS
	AVCHLFS
	AVCHLGS
	AVCLZ
	AVCLZB
	AVCLZH
	AVCLZF
	AVCLZG
	AVCTZ
	AVCTZB
	AVCTZH
	AVCTZF
	AVCTZG
	AVEC
	AVECB
	AVECH
	AVECF
	AVECG
	AVECL
	AVECLB
	AVECLH
	AVECLF
	AVECLG
	AVERIM
	AVERIMB
	AVERIMH
	AVERIMF
	AVERIMG
	AVERLL
	AVERLLB
	AVERLLH
	AVERLLF
	AVERLLG
	AVERLLV
	AVERLLVB
	AVERLLVH
	AVERLLVF
	AVERLLVG
	AVESLV
	AVESLVB
	AVESLVH
	AVESLVF
	AVESLVG
	AVESL
	AVESLB
	AVESLH
	AVESLF
	AVESLG
	AVESRA
	AVESRAB
	AVESRAH
	AVESRAF
	AVESRAG
	AVESRAV
	AVESRAVB
	AVESRAVH
	AVESRAVF
	AVESRAVG
	AVESRL
	AVESRLB
	AVESRLH
	AVESRLF
	AVESRLG
	AVESRLV
	AVESRLVB
	AVESRLVH
	AVESRLVF
	AVESRLVG
	AVX
	AVFAE
	AVFAEB
	AVFAEH
	AVFAEF
	AVFAEBS
	AVFAEHS
	AVFAEFS
	AVFAEZB
	AVFAEZH
	AVFAEZF
	AVFAEZBS
	AVFAEZHS
	AVFAEZFS
	AVFEE
	AVFEEB
	AVFEEH
	AVFEEF
	AVFEEBS
	AVFEEHS
	AVFEEFS
	AVFEEZB
	AVFEEZH
	AVFEEZF
	AVFEEZBS
	AVFEEZHS
	AVFEEZFS
	AVFENE
	AVFENEB
	AVFENEH
	AVFENEF
	AVFENEBS
	AVFENEHS
	AVFENEFS
	AVFENEZB
	AVFENEZH
	AVFENEZF
	AVFENEZBS
	AVFENEZHS
	AVFENEZFS
	AVFA
	AVFADB
	AWFADB
	AWFK
	AWFKDB
	AVFCE
	AVFCEDB
	AVFCEDBS
	AWFCEDB
	AWFCEDBS
	AVFCH
	AVFCHDB
	AVFCHDBS
	AWFCHDB
	AWFCHDBS
	AVFCHE
	AVFCHEDB
	AVFCHEDBS
	AWFCHEDB
	AWFCHEDBS
	AWFC
	AWFCDB
	AVCDG
	AVCDGB
	AWCDGB
	AVCDLG
	AVCDLGB
	AWCDLGB
	AVCGD
	AVCGDB
	AWCGDB
	AVCLGD
	AVCLGDB
	AWCLGDB
	AVFD
	AVFDDB
	AWFDDB
	AVLDE
	AVLDEB
	AWLDEB
	AVLED
	AVLEDB
	AWLEDB
	AVFM
	AVFMDB
	AWFMDB
	AVFMA
	AVFMADB
	AWFMADB
	AVFMS
	AVFMSDB
	AWFMSDB
	AVFPSO
	AVFPSODB
	AWFPSODB
	AVFLCDB
	AWFLCDB
	AVFLNDB
	AWFLNDB
	AVFLPDB
	AWFLPDB
	AVFSQ
	AVFSQDB
	AWFSQDB
	AVFS
	AVFSDB
	AWFSDB
	AVFTCI
	AVFTCIDB
	AWFTCIDB
	AVGFM
	AVGFMB
	AVGFMH
	AVGFMF
	AVGFMG
	AVGFMA
	AVGFMAB
	AVGFMAH
	AVGFMAF
	AVGFMAG
	AVGEF
	AVGEG
	AVGBM
	AVZERO
	AVONE
	AVGM
	AVGMB
	AVGMH
	AVGMF
	AVGMG
	AVISTR
	AVISTRB
	AVISTRH
	AVISTRF
	AVISTRBS
	AVISTRHS
	AVISTRFS
	AVL
	AVLR
	AVLREP
	AVLREPB
	AVLREPH
	AVLREPF
	AVLREPG
	AVLC
	AVLCB
	AVLCH
	AVLCF
	AVLCG
	AVLEH
	AVLEF
	AVLEG
	AVLEB
	AVLEIH
	AVLEIF
	AVLEIG
	AVLEIB
	AVFI
	AVFIDB
	AWFIDB
	AVLGV
	AVLGVB
	AVLGVH
	AVLGVF
	AVLGVG
	AVLLEZ
	AVLLEZB
	AVLLEZH
	AVLLEZF
	AVLLEZG
	AVLM
	AVLP
	AVLPB
	AVLPH
	AVLPF
	AVLPG
	AVLBB
	AVLVG
	AVLVGB
	AVLVGH
	AVLVGF
	AVLVGG
	AVLVGP
	AVLL
	AVMX
	AVMXB
	AVMXH
	AVMXF
	AVMXG
	AVMXL
	AVMXLB
	AVMXLH
	AVMXLF
	AVMXLG
	AVMRH
	AVMRHB
	AVMRHH
	AVMRHF
	AVMRHG
	AVMRL
	AVMRLB
	AVMRLH
	AVMRLF
	AVMRLG
	AVMN
	AVMNB
	AVMNH
	AVMNF
	AVMNG
	AVMNL
	AVMNLB
	AVMNLH
	AVMNLF
	AVMNLG
	AVMAE
	AVMAEB
	AVMAEH
	AVMAEF
	AVMAH
	AVMAHB
	AVMAHH
	AVMAHF
	AVMALE
	AVMALEB
	AVMALEH
	AVMALEF
	AVMALH
	AVMALHB
	AVMALHH
	AVMALHF
	AVMALO
	AVMALOB
	AVMALOH
	AVMALOF
	AVMAL
	AVMALB
	AVMALHW
	AVMALF
	AVMAO
	AVMAOB
	AVMAOH
	AVMAOF
	AVME
	AVMEB
	AVMEH
	AVMEF
	AVMH
	AVMHB
	AVMHH
	AVMHF
	AVMLE
	AVMLEB
	AVMLEH
	AVMLEF
	AVMLH
	AVMLHB
	AVMLHH
	AVMLHF
	AVMLO
	AVMLOB
	AVMLOH
	AVMLOF
	AVML
	AVMLB
	AVMLHW
	AVMLF
	AVMO
	AVMOB
	AVMOH
	AVMOF
	AVNO
	AVNOT
	AVO
	AVPK
	AVPKH
	AVPKF
	AVPKG
	AVPKLS
	AVPKLSH
	AVPKLSF
	AVPKLSG
	AVPKLSHS
	AVPKLSFS
	AVPKLSGS
	AVPKS
	AVPKSH
	AVPKSF
	AVPKSG
	AVPKSHS
	AVPKSFS
	AVPKSGS
	AVPERM
	AVPDI
	AVPOPCT
	AVREP
	AVREPB
	AVREPH
	AVREPF
	AVREPG
	AVREPI
	AVREPIB
	AVREPIH
	AVREPIF
	AVREPIG
	AVSCEF
	AVSCEG
	AVSEL
	AVSL
	AVSLB
	AVSLDB
	AVSRA
	AVSRAB
	AVSRL
	AVSRLB
	AVSEG
	AVSEGB
	AVSEGH
	AVSEGF
	AVST
	AVSTEH
	AVSTEF
	AVSTEG
	AVSTEB
	AVSTM
	AVSTL
	AVSTRC
	AVSTRCB
	AVSTRCH
	AVSTRCF
	AVSTRCBS
	AVSTRCHS
	AVSTRCFS
	AVSTRCZB
	AVSTRCZH
	AVSTRCZF
	AVSTRCZBS
	AVSTRCZHS
	AVSTRCZFS
	AVS
	AVSB
	AVSH
	AVSF
	AVSG
	AVSQ
	AVSCBI
	AVSCBIB
	AVSCBIH
	AVSCBIF
	AVSCBIG
	AVSCBIQ
	AVSBCBI
	AVSBCBIQ
	AVSBI
	AVSBIQ
	AVSUMG
	AVSUMGH
	AVSUMGF
	AVSUMQ
	AVSUMQF
	AVSUMQG
	AVSUM
	AVSUMB
	AVSUMH
	AVTM
	AVUPH
	AVUPHB
	AVUPHH
	AVUPHF
	AVUPLH
	AVUPLHB
	AVUPLHH
	AVUPLHF
	AVUPLL
	AVUPLLB
	AVUPLLH
	AVUPLLF
	AVUPL
	AVUPLB
	AVUPLHW
	AVUPLF
	AVMSLG
	AVMSLEG
	AVMSLOG
	AVMSLEOG

	ANOPH // NOP

	// binary
	ABYTE
	AWORD
	ADWORD

	// end marker
	ALAST

	// aliases
	ABR = obj.AJMP
	ABL = obj.ACALL
)

Variables

View Source
var Anames = []string{}/* 712 elements not displayed */
View Source
var Links390x = obj.LinkArch{
	Arch:           sys.ArchS390X,
	Init:           buildop,
	Preprocess:     preprocess,
	Assemble:       spanz,
	Progedit:       progedit,
	UnaryDst:       unaryDst,
	DWARFRegisters: S390XDWARFRegisters,
}
View Source
var S390XDWARFRegisters = map[int16]int16{}

LINUX for zSeries ELF Application Binary Interface Supplement https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries/x1472.html

Functions

func DRconv

func DRconv(a int) string

Types

type CCMask

type CCMask uint8

CCMask represents a 4-bit condition code mask. Bits that are not part of the mask should be 0.

Condition code masks represent the 4 possible values of the 2-bit condition code as individual bits. Since IBM Z is a big-endian platform bits are numbered from left to right. The lowest value, 0, is represented by 8 (0b1000) and the highest value, 3, is represented by 1 (0b0001).

Note that condition code values have different semantics depending on the instruction that set the condition code. The names given here assume that the condition code was set by an integer or floating point comparison. Other instructions may use these same codes to indicate different results such as a carry or overflow.

const (
	Never CCMask = 0 // no-op

	// 1-bit masks
	Equal     CCMask = 1 << 3
	Less      CCMask = 1 << 2
	Greater   CCMask = 1 << 1
	Unordered CCMask = 1 << 0

	// 2-bit masks
	EqualOrUnordered   CCMask = Equal | Unordered   // not less and not greater
	LessOrEqual        CCMask = Less | Equal        // ordered and not greater
	LessOrGreater      CCMask = Less | Greater      // ordered and not equal
	LessOrUnordered    CCMask = Less | Unordered    // not greater and not equal
	GreaterOrEqual     CCMask = Greater | Equal     // ordered and not less
	GreaterOrUnordered CCMask = Greater | Unordered // not less and not equal

	// 3-bit masks
	NotEqual     CCMask = Always ^ Equal
	NotLess      CCMask = Always ^ Less
	NotGreater   CCMask = Always ^ Greater
	NotUnordered CCMask = Always ^ Unordered

	// 4-bit mask
	Always CCMask = Equal | Less | Greater | Unordered

	// useful aliases
	Carry    CCMask = GreaterOrUnordered
	NoCarry  CCMask = LessOrEqual
	Borrow   CCMask = NoCarry
	NoBorrow CCMask = Carry
)

func (CCMask) CanBeAnSSAAux

func (CCMask) CanBeAnSSAAux()

func (CCMask) Inverse

func (c CCMask) Inverse() CCMask

Inverse returns the complement of the condition code mask.

func (CCMask) ReverseComparison

func (c CCMask) ReverseComparison() CCMask

ReverseComparison swaps the bits at 0b0100 and 0b0010 in the mask, reversing the behavior of greater than and less than conditions.

func (CCMask) String

func (c CCMask) String() string

type Optab

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

type RotateParams

type RotateParams struct {
	Start  uint8 // big-endian start bit index [0..63]
	End    uint8 // big-endian end bit index [0..63]
	Amount uint8 // amount to rotate left
}

RotateParams represents the immediates required for a "rotate then ... selected bits instruction".

The Start and End values are the indexes that represent the masked region. They are inclusive and are in big- endian order (bit 0 is the MSB, bit 63 is the LSB). They may wrap around.

Some examples:

Masked region | Start | End --------------------------+-------+---- 0x00_00_00_00_00_00_00_0f | 60 | 63 0xf0_00_00_00_00_00_00_00 | 0 | 3 0xf0_00_00_00_00_00_00_0f | 60 | 3

The Amount value represents the amount to rotate the input left by. Note that this rotation is performed before the masked region is used.

func NewRotateParams

func NewRotateParams(start, end, amount uint8) RotateParams

NewRotateParams creates a set of parameters representing a rotation left by the amount provided and a selection of the bits between the provided start and end indexes (inclusive).

The start and end indexes and the rotation amount must all be in the range 0-63 inclusive or this function will panic.

func (RotateParams) CanBeAnSSAAux

func (RotateParams) CanBeAnSSAAux()

func (RotateParams) InMask

func (r RotateParams) InMask() uint64

InMask provides a mask representing the selected bits relative to the source value (i.e. pre-rotation).

func (RotateParams) InMerge

func (r RotateParams) InMerge(mask uint64) *RotateParams

InMerge tries to generate a new set of parameters representing the intersection between the selected bits and the provided mask as applied to the source value (i.e. pre-rotation). If the intersection is unrepresentable (0 or not contiguous) nil will be returned.

func (RotateParams) OutMask

func (r RotateParams) OutMask() uint64

OutMask provides a mask representing the selected bits.

func (RotateParams) OutMerge

func (r RotateParams) OutMerge(mask uint64) *RotateParams

OutMerge tries to generate a new set of parameters representing the intersection between the selected bits and the provided mask. If the intersection is unrepresentable (0 or not contiguous) nil will be returned.

func (RotateParams) RotateLeft

func (r RotateParams) RotateLeft(amount uint8) RotateParams

RotateLeft generates a new set of parameters with the rotation amount increased by the given value. The selected bits are left unchanged.

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL