Documentation
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Overview ¶
Package arch defines architecture-specific information and support functions.
Index ¶
- Constants
- func ARM64RegisterArrangement(reg int16, name, arng string) (int64, error)
- func ARM64RegisterExtension(a *obj.Addr, ext string, reg, num int16, isAmount, isIndex bool) error
- func ARM64RegisterListOffset(firstReg, regCnt int, arrangement int64) (int64, error)
- func ARM64Suffix(prog *obj.Prog, cond string) bool
- func ARMConditionCodes(prog *obj.Prog, cond string) bool
- func ARMMRCOffset(op obj.As, cond string, x0, x1, x2, x3, x4, x5 int64) (offset int64, op0 obj.As, ok bool)
- func IsARM64CMP(op obj.As) bool
- func IsARM64STLXR(op obj.As) bool
- func IsARM64TBL(op obj.As) bool
- func IsARMBFX(op obj.As) bool
- func IsARMCMP(op obj.As) bool
- func IsARMFloatCmp(op obj.As) bool
- func IsARMMRC(op obj.As) bool
- func IsARMMULA(op obj.As) bool
- func IsARMSTREX(op obj.As) bool
- func IsMIPSCMP(op obj.As) bool
- func IsMIPSMUL(op obj.As) bool
- func IsPPC64CMP(op obj.As) bool
- func IsPPC64ISEL(op obj.As) bool
- func IsPPC64NEG(op obj.As) bool
- func IsPPC64RLD(op obj.As) bool
- func IsS390xCMP(op obj.As) bool
- func IsS390xNEG(op obj.As) bool
- func ParseARMCondition(cond string) (uint8, bool)
- type Arch
Constants ¶
const ( RFP = -(iota + 1) RSB RSP RPC )
Pseudo-registers whose names are the constant name without the leading R.
Variables ¶
This section is empty.
Functions ¶
func ARM64RegisterArrangement ¶ added in go1.10
ARM64RegisterArrangement parses an ARM64 vector register arrangement.
func ARM64RegisterExtension ¶ added in go1.10
ARM64RegisterExtension parses an ARM64 register with extension or arrangement.
func ARM64RegisterListOffset ¶ added in go1.10
ARM64RegisterListOffset generates offset encoding according to AArch64 specification.
func ARM64Suffix ¶
ARM64Suffix handles the special suffix for the ARM64. It returns a boolean to indicate success; failure means cond was unrecognized.
func ARMConditionCodes ¶
ARMConditionCodes handles the special condition code situation for the ARM. It returns a boolean to indicate success; failure means cond was unrecognized.
func ARMMRCOffset ¶
func ARMMRCOffset(op obj.As, cond string, x0, x1, x2, x3, x4, x5 int64) (offset int64, op0 obj.As, ok bool)
ARMMRCOffset implements the peculiar encoding of the MRC and MCR instructions. The difference between MRC and MCR is represented by a bit high in the word, not in the usual way by the opcode itself. Asm must use AMRC for both instructions, so we return the opcode for MRC so that asm doesn't need to import obj/arm.
func IsARM64CMP ¶
IsARM64CMP reports whether the op (as defined by an arm.A* constant) is one of the comparison instructions that require special handling.
func IsARM64STLXR ¶
IsARM64STLXR reports whether the op (as defined by an arm64.A* constant) is one of the STLXR-like instructions that require special handling.
func IsARM64TBL ¶ added in go1.11
IsARM64TBL reports whether the op (as defined by an arm64.A* constant) is one of the table lookup instructions that require special handling.
func IsARMBFX ¶ added in go1.10
IsARMBFX reports whether the op (as defined by an arm.A* constant) is one the BFX-like instructions which are in the form of "op $width, $LSB, (Reg,) Reg".
func IsARMCMP ¶
IsARMCMP reports whether the op (as defined by an arm.A* constant) is one of the comparison instructions that require special handling.
func IsARMFloatCmp ¶ added in go1.5.1
IsARMFloatCmp reports whether the op is a floating comparison instruction.
func IsARMMULA ¶
IsARMMULA reports whether the op (as defined by an arm.A* constant) is MULA, MULS, MMULA, MMULS, MULABB, MULAWB or MULAWT, the 4-operand instructions.
func IsARMSTREX ¶
IsARMSTREX reports whether the op (as defined by an arm.A* constant) is one of the STREX-like instructions that require special handling.
func IsMIPSCMP ¶ added in go1.8
IsMIPSCMP reports whether the op (as defined by an mips.A* constant) is one of the CMP instructions that require special handling.
func IsMIPSMUL ¶ added in go1.8
IsMIPSMUL reports whether the op (as defined by an mips.A* constant) is one of the MUL/DIV/REM instructions that require special handling.
func IsPPC64CMP ¶
IsPPC64CMP reports whether the op (as defined by an ppc64.A* constant) is one of the CMP instructions that require special handling.
func IsPPC64ISEL ¶ added in go1.8
func IsPPC64NEG ¶
IsPPC64NEG reports whether the op (as defined by an ppc64.A* constant) is one of the NEG-like instructions that require special handling.
func IsPPC64RLD ¶
IsPPC64RLD reports whether the op (as defined by an ppc64.A* constant) is one of the RLD-like instructions that require special handling. The FMADD-like instructions behave similarly.
func IsS390xCMP ¶ added in go1.7
IsS390xCMP reports whether the op (as defined by an s390x.A* constant) is one of the CMP instructions that require special handling.
func IsS390xNEG ¶ added in go1.7
IsS390xNEG reports whether the op (as defined by an s390x.A* constant) is one of the NEG-like instructions that require special handling.
func ParseARMCondition ¶
ParseARMCondition parses the conditions attached to an ARM instruction. The input is a single string consisting of period-separated condition codes, such as ".P.W". An initial period is ignored.
Types ¶
type Arch ¶
type Arch struct {
*obj.LinkArch
// Map of instruction names to enumeration.
Instructions map[string]obj.As
// Map of register names to enumeration.
Register map[string]int16
// Table of register prefix names. These are things like R for R(0) and SPR for SPR(268).
RegisterPrefix map[string]bool
// RegisterNumber converts R(10) into arm.REG_R10.
RegisterNumber func(string, int16) (int16, bool)
// Instruction is a jump.
IsJump func(word string) bool
}
Arch wraps the link architecture object with more architecture-specific information.
Source Files