RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 06:17:35 +00:00
Code Issues Activity Actions

ELFLoader: Add program header support.

Browse source 
We don't do anything useful with the data yet, but I'm gonna rewrite
the layout code to run off of the program header table instead.
This will allow us to map .text and .rodata sections in read-only memory.
This commit is contained in:
Andreas Kling 2018-11-03 10:11:56 +01:00
parent 20fb1fc377
commit 8f51f0e6b2
3 changed files with 63 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

17
ELFLoader/ELFImage.cpp
View file

@ -91,6 +91,11 @@ unsigned ELFImage::sectionCount() const
return header().e_shnum;
}
unsigned ELFImage::program_header_count() const
{
return header().e_phnum;
}
bool ELFImage::parse()
{
// We only support i386.
@ -148,6 +153,12 @@ const Elf32_Ehdr& ELFImage::header() const
return *reinterpret_cast<const Elf32_Ehdr*>(rawData(0));
}
const Elf32_Phdr& ELFImage::program_header_internal(unsigned index) const
{
ASSERT(index < header().e_phnum);
return *reinterpret_cast<const Elf32_Phdr*>(rawData(header().e_phoff + (index * sizeof(Elf32_Phdr))));
}
const Elf32_Shdr& ELFImage::sectionHeader(unsigned index) const
{
ASSERT(index < header().e_shnum);
@ -167,6 +178,12 @@ const ELFImage::Section ELFImage::section(unsigned index) const
return Section(*this, index);
}
const ELFImage::ProgramHeader ELFImage::program_header(unsigned index) const
{
ASSERT(index < program_header_count());
return ProgramHeader(*this, index);
}
const ELFImage::Relocation ELFImage::RelocationSection::relocation(unsigned index) const
{
ASSERT(index < relocationCount());