kernel.c File Reference

#include "kernel.h"
#include <boot/boot_info.h>
#include <stdint.h>
#include <sys/elf.h>
#include <sys/math.h>
#include <sys/proc.h>

Go to the source code of this file.

Functions
static BOOLEAN	is_valid_phdr (const elf_phdr_t *phdr, uint64_t fileSize)
static BOOLEAN	is_valid_shdr (const elf_shdr_t *shdr, uint64_t fileSize)
static EFI_STATUS	determine_kernel_bounds (const elf_phdr_t *phdrs, const elf_hdr_t *header, uint64_t phdrTableSize, uintptr_t *virtStart, uintptr_t *virtEnd)
static EFI_STATUS	load_section_headers (EFI_FILE *file, boot_kernel_t *kernel, uint64_t fileSize)
static elf_shdr_t *	find_section_by_type (boot_kernel_t *kernel, elf_shdr_type_t sectionType)
static EFI_STATUS	load_symbol_table (EFI_FILE *file, boot_kernel_t *kernel, uint64_t fileSize)
static EFI_STATUS	load_kernel_segments (EFI_FILE *file, uintptr_t physStart, uintptr_t virtStart, uint64_t kernelPageAmount, const elf_phdr_t *phdrs, const elf_hdr_t *header, uint64_t fileSize)
EFI_STATUS	kernel_load (boot_kernel_t *kernel, EFI_FILE *rootHandle)

Function Documentation

determine_kernel_bounds()

static EFI_STATUS determine_kernel_bounds ( const elf_phdr_t *  phdrs, const elf_hdr_t *  header, uint64_t  phdrTableSize, uintptr_t *  virtStart, uintptr_t *  virtEnd  )

static

Definition at line 42 of file kernel.c.

References ELF_PHDR_TYPE_LOAD, MAX, elf_phdr_t::memorySize, MIN, NULL, elf_hdr_t::phdrAmount, elf_hdr_t::phdrSize, elf_phdr_t::type, UINT64_MAX, and elf_phdr_t::virtAddr.

Referenced by kernel_load().

find_section_by_type()

static elf_shdr_t * find_section_by_type ( boot_kernel_t *  kernel, elf_shdr_type_t  sectionType  )

static

Definition at line 126 of file kernel.c.

References boot_kernel_t::header, NULL, boot_kernel_t::shdrCount, boot_kernel_t::shdrs, elf_hdr_t::shdrSize, and elf_shdr_t::type.

Referenced by load_symbol_table().

is_valid_phdr()

static BOOLEAN is_valid_phdr ( const elf_phdr_t *  phdr, uint64_t  fileSize  )

static

Definition at line 9 of file kernel.c.

References elf_phdr_t::fileSize, NULL, and elf_phdr_t::offset.

Referenced by load_kernel_segments().

is_valid_shdr()

static BOOLEAN is_valid_shdr ( const elf_shdr_t *  shdr, uint64_t  fileSize  )

static

Definition at line 24 of file kernel.c.

References ELF_SHDR_TYPE_NOBITS, NULL, elf_shdr_t::offset, elf_shdr_t::size, and elf_shdr_t::type.

Referenced by load_symbol_table().

kernel_load()

EFI_STATUS kernel_load	(	boot_kernel_t *	kernel,
		EFI_FILE *	rootHandle
	)

Definition at line 298 of file kernel.c.

References BYTES_TO_PAGES, determine_kernel_bounds(), ELF_IS_VALID, boot_kernel_t::entry, elf_hdr_t::entry, file, boot_kernel_t::header, load_kernel_segments(), load_section_headers(), load_symbol_table(), NULL, elf_hdr_t::phdrAmount, elf_hdr_t::phdrOffset, boot_kernel_t::phdrs, elf_hdr_t::phdrSize, boot_kernel_t::physStart, boot_kernel_t::shdrs, boot_kernel_t::size, boot_kernel_t::stringTable, boot_kernel_t::symbolCount, boot_kernel_t::symbols, and boot_kernel_t::virtStart.

Referenced by boot_info_populate().

load_kernel_segments()

static EFI_STATUS load_kernel_segments ( EFI_FILE *  file, uintptr_t  physStart, uintptr_t  virtStart, uint64_t  kernelPageAmount, const elf_phdr_t *  phdrs, const elf_hdr_t *  header, uint64_t  fileSize  )

static

Definition at line 251 of file kernel.c.

References ELF_PHDR_TYPE_LOAD, file, elf_phdr_t::fileSize, is_valid_phdr(), elf_phdr_t::memorySize, NULL, elf_phdr_t::offset, PAGE_SIZE, elf_hdr_t::phdrAmount, elf_hdr_t::phdrSize, elf_phdr_t::type, and elf_phdr_t::virtAddr.

Referenced by kernel_load().

load_section_headers()

static EFI_STATUS load_section_headers ( EFI_FILE *  file, boot_kernel_t *  kernel, uint64_t  fileSize  )

static

Definition at line 79 of file kernel.c.

References file, boot_kernel_t::header, NULL, elf_hdr_t::shdrAmount, boot_kernel_t::shdrCount, elf_hdr_t::shdrOffset, boot_kernel_t::shdrs, and elf_hdr_t::shdrSize.

Referenced by kernel_load().

load_symbol_table()

static EFI_STATUS load_symbol_table ( EFI_FILE *  file, boot_kernel_t *  kernel, uint64_t  fileSize  )

static

Definition at line 145 of file kernel.c.

References ELF_SHDR_TYPE_DYNSYM, ELF_SHDR_TYPE_STRTAB, ELF_SHDR_TYPE_SYMTAB, elf_shdr_t::entrySize, file, find_section_by_type(), boot_kernel_t::header, is_valid_shdr(), elf_shdr_t::link, NULL, elf_shdr_t::offset, boot_kernel_t::shdrCount, boot_kernel_t::shdrs, elf_hdr_t::shdrSize, elf_shdr_t::size, boot_kernel_t::stringTable, boot_kernel_t::stringTableSize, boot_kernel_t::symbolCount, boot_kernel_t::symbols, and elf_shdr_t::type.

Referenced by kernel_load().