160 lines
2.4 KiB
V
160 lines
2.4 KiB
V
// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module x64
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/*
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This file is unused right now, since binaries without sections
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are generated.
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But it will be necessary once we have dynamic linking.
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*/
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enum SectionType {
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null = 0
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progbits = 1
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symtab = 2
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strtab = 3
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rela = 4
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}
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struct SectionConfig {
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name string
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typ SectionType
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flags i64
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data voidptr
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is_saa bool
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datalen i64
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link int
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info int
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align i64
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entsize i64
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}
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fn (g mut Gen) section_header(c SectionConfig) {
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g.write32(g.sect_header_name_pos)
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g.sect_header_name_pos += c.name.len + 1
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g.write32(int(c.typ))
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g.write64(c.flags)
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g.write64(0) // sh_addr
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g.write64(g.offset) // offset
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g.offset += c.datalen + 1
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g.write64(c.datalen)
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g.write32(c.link)
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g.write32(c.info)
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g.write64(c.align)
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g.write64(c.entsize)
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}
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fn genobj() {
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/*
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// SHN_UNDEF
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mut g := Gen{}
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nr_sections := 7
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g.section_header(SectionConfig{
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name: ''
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typ: .null
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flags:0
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data: 0
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is_saa: false
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link: 0
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info:0
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align:0
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entsize: 0
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})
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/*
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for sect in sections {
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g.section_header(SectionConfig{
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name:0
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typ: sect.typ
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flags: sect.flags
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data: sect.data
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is_saa: true
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datalen: sect.len
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link: 0
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info: 0
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align: sect.align
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entsize: sect.entsize
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})
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}
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*/
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g.section_header(SectionConfig{
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name: '.DATA'
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typ: .progbits
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flags: 0x2
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//data: sect.data
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is_saa: true
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datalen: 0xd
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link: 0
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info: 0
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align: 1
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entsize: 0
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})
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g.section_header(SectionConfig{
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name: '.TEXT'
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typ: .progbits
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flags: 0x2
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//data: sect.data
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is_saa: true
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datalen: 0xd
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link: 0
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info: 0
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align: 1
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entsize: 0
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})
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g.section_header(SectionConfig{
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name: '.shstrtab'
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typ: .strtab
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flags: 0x2
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//data: sect.data
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is_saa: true
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datalen: 0x22
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link: 0
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info: 0
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align: 1
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entsize: 0
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})
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g.section_header(SectionConfig{
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name: '.symtab'
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typ: .symtab
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flags: 0x2
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//data: sect.data
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is_saa: true
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datalen: 0xd
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link: 0
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info: 0
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align: 1
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entsize: 0
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})
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g.section_header(SectionConfig{
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name: '.strtab'
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typ: .symtab
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flags: 0x2
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//data: sect.data
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is_saa: true
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datalen: 0xd
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link: 0
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info: 0
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align: 1
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entsize: 0
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})
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g.section_header(SectionConfig{
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name: '.rela.TEXT'
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typ: .rela
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flags: 0x0
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//data: sect.data
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is_saa: true
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datalen: 0x18
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link: 4
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info: 2
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align: 8
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entsize: 0x18
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})
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*/
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}
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