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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package runtime
// ELF64 structure definitions for use by the Linux vDSO loader
type elfSym struct {
st_name uint32
st_info byte
st_other byte
st_shndx uint16
st_value uint64
st_size uint64
}
type elfVerdef struct {
vd_version uint16 /* Version revision */
vd_flags uint16 /* Version information */
vd_ndx uint16 /* Version Index */
vd_cnt uint16 /* Number of associated aux entries */
vd_hash uint32 /* Version name hash value */
vd_aux uint32 /* Offset in bytes to verdaux array */
vd_next uint32 /* Offset in bytes to next verdef entry */
}
type elfEhdr struct {
e_ident [_EI_NIDENT]byte /* Magic number and other info */
e_type uint16 /* Object file type */
e_machine uint16 /* Architecture */
e_version uint32 /* Object file version */
e_entry uint64 /* Entry point virtual address */
e_phoff uint64 /* Program header table file offset */
e_shoff uint64 /* Section header table file offset */
e_flags uint32 /* Processor-specific flags */
e_ehsize uint16 /* ELF header size in bytes */
e_phentsize uint16 /* Program header table entry size */
e_phnum uint16 /* Program header table entry count */
e_shentsize uint16 /* Section header table entry size */
e_shnum uint16 /* Section header table entry count */
e_shstrndx uint16 /* Section header string table index */
}
type elfPhdr struct {
p_type uint32 /* Segment type */
p_flags uint32 /* Segment flags */
p_offset uint64 /* Segment file offset */
p_vaddr uint64 /* Segment virtual address */
p_paddr uint64 /* Segment physical address */
p_filesz uint64 /* Segment size in file */
p_memsz uint64 /* Segment size in memory */
p_align uint64 /* Segment alignment */
}
type elfShdr struct {
sh_name uint32 /* Section name (string tbl index) */
sh_type uint32 /* Section type */
sh_flags uint64 /* Section flags */
sh_addr uint64 /* Section virtual addr at execution */
sh_offset uint64 /* Section file offset */
sh_size uint64 /* Section size in bytes */
sh_link uint32 /* Link to another section */
sh_info uint32 /* Additional section information */
sh_addralign uint64 /* Section alignment */
sh_entsize uint64 /* Entry size if section holds table */
}
type elfDyn struct {
d_tag int64 /* Dynamic entry type */
d_val uint64 /* Integer value */
}
type elfVerdaux struct {
vda_name uint32 /* Version or dependency names */
vda_next uint32 /* Offset in bytes to next verdaux entry */
}
const (
// vdsoArrayMax is the byte-size of a maximally sized array on this architecture.
// See cmd/compile/internal/amd64/galign.go arch.MAXWIDTH initialization.
vdsoArrayMax = 1<<50 - 1
)
var sym_keys = []symbol_key{
{"__vdso_time", 0xa33c485, 0x821e8e0d, &__vdso_time_sym},
{"__vdso_gettimeofday", 0x315ca59, 0xb01bca00, &__vdso_gettimeofday_sym},
{"__vdso_clock_gettime", 0xd35ec75, 0x6e43a318, &__vdso_clock_gettime_sym},
}
// initialize with vsyscall fallbacks
var (
__vdso_time_sym uintptr = 0xffffffffff600400
__vdso_gettimeofday_sym uintptr = 0xffffffffff600000
__vdso_clock_gettime_sym uintptr = 0
)