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add some objdump snippets to make clearer what is happening

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Folkert 2022-09-15 19:37:28 +02:00
parent 132ea07191
commit bad715e18a
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1 changed files with 24 additions and 0 deletions
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24
crates/linker/src/pe.rs
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@ -327,6 +327,17 @@ impl<'a> Preprocessor<'a> {
self.write_dummy_sections();
// update the size of the headers
//
// Time/Date Wed Sep 14 16:04:36 2022
// Magic 020b (PE32+)
// MajorLinkerVersion 14
// MinorLinkerVersion 0
// ...
// SizeOfImage 00067000
// SizeOfHeaders 00000400
// ...
//
// we added extra bytes to the headers, so this value must be updated
let nt_headers =
load_struct_inplace_mut::<ImageNtHeaders64>(&mut self.result, self.header_offset as _);
nt_headers
@ -335,6 +346,19 @@ impl<'a> Preprocessor<'a> {
.set(LE, self.new_headers_size as u32);
// update the section file offsets
//
// Sections:
// Idx Name Size VMA LMA File off Algn
// 0 .text 00054d96 0000000140001000 0000000140001000 00000400 2**4
// CONTENTS, ALLOC, LOAD, READONLY, CODE
// 1 .rdata 00008630 0000000140056000 0000000140056000 00055200 2**4
// CONTENTS, ALLOC, LOAD, READONLY, DATA
// 2 .data 00000200 000000014005f000 000000014005f000 0005da00 2**4
// CONTENTS, ALLOC, LOAD, DATA
// 3 .pdata 0000228c 0000000140061000 0000000140061000 0005dc00 2**2
//
// The file offset of the sections has changed (we inserted some bytes) and this value must
// now be updated to point to the correct place in the file
let shift = self.new_headers_size - self.old_headers_size;
let mut offset = self.section_table_offset as usize;
loop {