Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/src/runtime/vdso_elf32.go b/src/runtime/vdso_elf32.go
new file mode 100644
index 0000000..1b8afbe
--- /dev/null
+++ b/src/runtime/vdso_elf32.go
@@ -0,0 +1,79 @@
+// Copyright 2018 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.
+
+//go:build linux && (386 || arm)
+
+package runtime
+
+// ELF32 structure definitions for use by the vDSO loader
+
+type elfSym struct {
+	st_name  uint32
+	st_value uint32
+	st_size  uint32
+	st_info  byte
+	st_other byte
+	st_shndx uint16
+}
+
+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     uint32           /* Entry point virtual address */
+	e_phoff     uint32           /* Program header table file offset */
+	e_shoff     uint32           /* 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_offset uint32 /* Segment file offset */
+	p_vaddr  uint32 /* Segment virtual address */
+	p_paddr  uint32 /* Segment physical address */
+	p_filesz uint32 /* Segment size in file */
+	p_memsz  uint32 /* Segment size in memory */
+	p_flags  uint32 /* Segment flags */
+	p_align  uint32 /* Segment alignment */
+}
+
+type elfShdr struct {
+	sh_name      uint32 /* Section name (string tbl index) */
+	sh_type      uint32 /* Section type */
+	sh_flags     uint32 /* Section flags */
+	sh_addr      uint32 /* Section virtual addr at execution */
+	sh_offset    uint32 /* Section file offset */
+	sh_size      uint32 /* Section size in bytes */
+	sh_link      uint32 /* Link to another section */
+	sh_info      uint32 /* Additional section information */
+	sh_addralign uint32 /* Section alignment */
+	sh_entsize   uint32 /* Entry size if section holds table */
+}
+
+type elfDyn struct {
+	d_tag int32  /* Dynamic entry type */
+	d_val uint32 /* Integer value */
+}
+
+type elfVerdaux struct {
+	vda_name uint32 /* Version or dependency names */
+	vda_next uint32 /* Offset in bytes to next verdaux entry */
+}