package attr

import "github.com/mmcloughlin/avo/attr"

Package attr provides attributes for text and data sections.

Index ¶

• type Attribute
• func (a Attribute) Asm() string
• func (a Attribute) ContainsTextFlags() bool

Types ¶

type Attribute ¶

type Attribute uint16

Attribute represents TEXT or DATA flags.

const (
	NOPROF Attribute = 1 << iota
	DUPOK
	NOSPLIT
	RODATA
	NOPTR
	WRAPPER
	NEEDCTXT

	TLSBSS
	NOFRAME
	REFLECTMETHOD
	TOPFRAME
)

Reference: https://github.com/golang/go/blob/aafe257390cc9048e8b5df898fabd79a9e0d4c39/src/runtime/textflag.h#L11-L37

// Don't profile the marked routine. This flag is deprecated.
#define NOPROF	1
// It is ok for the linker to get multiple of these symbols. It will
// pick one of the duplicates to use.
#define DUPOK	2
// Don't insert stack check preamble.
#define NOSPLIT	4
// Put this data in a read-only section.
#define RODATA	8
// This data contains no pointers.
#define NOPTR	16
// This is a wrapper function and should not count as disabling 'recover'.
#define WRAPPER 32
// This function uses its incoming context register.
#define NEEDCTXT 64
// Allocate a word of thread local storage and store the offset from the
// thread local base to the thread local storage in this variable.
#define TLSBSS	256
// Do not insert instructions to allocate a stack frame for this function.
// Only valid on functions that declare a frame size of 0.
// TODO(mwhudson): only implemented for ppc64x at present.
#define NOFRAME 512
// Function can call reflect.Type.Method or reflect.Type.MethodByName.
#define REFLECTMETHOD 1024
// Function is the top of the call stack. Call stack unwinders should stop
// at this function.
#define TOPFRAME 2048

func (Attribute) Asm ¶

func (a Attribute) Asm() string

Asm returns a representation of the attributes in assembly syntax. This may use macros from "textflags.h"; see ContainsTextFlags() to determine if this header is required.

func (Attribute) ContainsTextFlags ¶

func (a Attribute) ContainsTextFlags() bool

ContainsTextFlags returns whether the Asm() representation requires macros in "textflags.h".

Source Files ¶

attr.go