github.com/x04/go/src@v0.0.0-20200202162449-3d481ceb3525/runtime/vdso_elf64.go (about)

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build linux
     6  // +build amd64 arm64 mips64 mips64le ppc64 ppc64le
     7  
     8  package runtime
     9  
    10  // ELF64 structure definitions for use by the vDSO loader
    11  
    12  type elfSym struct {
    13  	st_name		uint32
    14  	st_info		byte
    15  	st_other	byte
    16  	st_shndx	uint16
    17  	st_value	uint64
    18  	st_size		uint64
    19  }
    20  
    21  type elfVerdef struct {
    22  	vd_version	uint16	/* Version revision */
    23  	vd_flags	uint16	/* Version information */
    24  	vd_ndx		uint16	/* Version Index */
    25  	vd_cnt		uint16	/* Number of associated aux entries */
    26  	vd_hash		uint32	/* Version name hash value */
    27  	vd_aux		uint32	/* Offset in bytes to verdaux array */
    28  	vd_next		uint32	/* Offset in bytes to next verdef entry */
    29  }
    30  
    31  type elfEhdr struct {
    32  	e_ident		[_EI_NIDENT]byte	/* Magic number and other info */
    33  	e_type		uint16			/* Object file type */
    34  	e_machine	uint16			/* Architecture */
    35  	e_version	uint32			/* Object file version */
    36  	e_entry		uint64			/* Entry point virtual address */
    37  	e_phoff		uint64			/* Program header table file offset */
    38  	e_shoff		uint64			/* Section header table file offset */
    39  	e_flags		uint32			/* Processor-specific flags */
    40  	e_ehsize	uint16			/* ELF header size in bytes */
    41  	e_phentsize	uint16			/* Program header table entry size */
    42  	e_phnum		uint16			/* Program header table entry count */
    43  	e_shentsize	uint16			/* Section header table entry size */
    44  	e_shnum		uint16			/* Section header table entry count */
    45  	e_shstrndx	uint16			/* Section header string table index */
    46  }
    47  
    48  type elfPhdr struct {
    49  	p_type		uint32	/* Segment type */
    50  	p_flags		uint32	/* Segment flags */
    51  	p_offset	uint64	/* Segment file offset */
    52  	p_vaddr		uint64	/* Segment virtual address */
    53  	p_paddr		uint64	/* Segment physical address */
    54  	p_filesz	uint64	/* Segment size in file */
    55  	p_memsz		uint64	/* Segment size in memory */
    56  	p_align		uint64	/* Segment alignment */
    57  }
    58  
    59  type elfShdr struct {
    60  	sh_name		uint32	/* Section name (string tbl index) */
    61  	sh_type		uint32	/* Section type */
    62  	sh_flags	uint64	/* Section flags */
    63  	sh_addr		uint64	/* Section virtual addr at execution */
    64  	sh_offset	uint64	/* Section file offset */
    65  	sh_size		uint64	/* Section size in bytes */
    66  	sh_link		uint32	/* Link to another section */
    67  	sh_info		uint32	/* Additional section information */
    68  	sh_addralign	uint64	/* Section alignment */
    69  	sh_entsize	uint64	/* Entry size if section holds table */
    70  }
    71  
    72  type elfDyn struct {
    73  	d_tag	int64	/* Dynamic entry type */
    74  	d_val	uint64	/* Integer value */
    75  }
    76  
    77  type elfVerdaux struct {
    78  	vda_name	uint32	/* Version or dependency names */
    79  	vda_next	uint32	/* Offset in bytes to next verdaux entry */
    80  }