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typedef tag_t = @{
type = uint32, // Identifier of tag
size = [n : nat | n >= 8] uint n // Size of tag (not including padding)
}
typedef memory_area_t = @{
base_addr = Ptr, // Start of physical address
length = [n : nat | n > 0 ] size_t n , // Size of memory region in bytes (64 bits)
type = uint, // Variety of address range represented. 1: available RAM, 3: usable memory holding ACPI information,
// 4: reserved memory (preserved on hibernation), Other: reserved area
reserved = uint 0
}
typedef memory_areas_t = @{
tag = tag_t,
entry_size = [n : nat | n > 0 && n % 8 == 0] uint n,
entry_version = uint,
entries = ptr // Pointer to entries
}
typedef elf_tag_t = @{
tag = tag_t,
num = uint, // Number of elf entries
entsize = uint 64, // Size of entry
shndx = uint, // Index of the section containing the string table
headers = ptr // Pointer to entries
}
typedef elf64_shdr_t = @{
name = uint, // Index into seaction header string table
type = uint, // Type of section (code,data,symbol,...)
flags = uint64, // Attributes and flags of section
addr = Ptr1, // (virtual) address of section in memory
offset = Ptr1, // Offset of seaction in ELF executable file
size = size_t, // Size of section in bytes
link = uint, // Extra informaion
info = uint, // Additional information
addralign = uint64, // Alignment requirements of section's address
entsize = size_t 64 // Size of each entry in section
}
typedef boot_info_t = @{
total_size = uint, // total size of boot information
memory_map = memory_areas_t,
elf_tag = elf_tag_t
}
vtypedef bootptr = [l : agz] (boot_info_t@l , boot_info_t@l -<lin,prf> void | ptr l)
fun boot_info_init(p : Ptr1) : bootptr
fn get_memory_mappings_n {l : agz} (pf : !boot_info_t@l | p : ptr l) :<> [n:nat] size_t n
fn get_memory_mapping {l:agz} (pf : !boot_info_t @ l | p : ptr l, n : size_t) :<> memory_area_t
fn print_memory_mappings (p : !bootptr) : void // Print all available memory area's
fn get_elf_headers_n (p : !bootptr) : [n:nat] size_t n
fn get_elf_header (p : !bootptr, n : size_t) : elf64_shdr_t
fn print_elf_headers (p : !bootptr) : void
fn get_kernel_ranges (p : !bootptr) : (Ptr,Ptr) // (kernel start, kernel end)
fn get_multiboot_ranges (p : !bootptr) : (Ptr0,Ptr0) // (bootinfo start, bootinfo end)
macdef invalid_area = @{
base_addr = the_null_ptr,
length = i2sz(1),
type = 0u,
reserved = 0u
}
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