The 64-bit segment load command indicates that a part of this file is to be mapped into a 64-bit task's address space. If the 64-bit segment has sections then section_64 structures directly follow the 64-bit segment command and their size is reflected in cmdsize.
cmd: LC = .SEGMENT_64LC_SEGMENT_64
cmdsize: u32includes sizeof section_64 structs
segname: [16]u8segment name
vmaddr: u64 = 0memory address of this segment
vmsize: u64 = 0memory size of this segment
fileoff: u64 = 0file offset of this segment
filesize: u64 = 0amount to map from the file
nsects: u32 = 0number of sections in segment
flags: u32 = 0pub fn segName(seg: *const segment_command_64) []const u8seg: *const segment_command_64pub fn segName(seg: *const segment_command_64) []const u8 {
return parseName(&seg.segname);
}pub fn isWriteable(seg: segment_command_64) boolseg: segment_command_64pub fn isWriteable(seg: segment_command_64) bool {
return seg.initprot & PROT.WRITE != 0;
}pub const segment_command_64 = extern struct {
/// LC_SEGMENT_64
cmd: LC = .SEGMENT_64,
/// includes sizeof section_64 structs
cmdsize: u32,
// TODO lazy values in stage2
// cmdsize: u32 = @sizeOf(segment_command_64),
/// segment name
segname: [16]u8,
/// memory address of this segment
vmaddr: u64 = 0,
/// memory size of this segment
vmsize: u64 = 0,
/// file offset of this segment
fileoff: u64 = 0,
/// amount to map from the file
filesize: u64 = 0,
/// maximum VM protection
maxprot: vm_prot_t = PROT.NONE,
/// initial VM protection
initprot: vm_prot_t = PROT.NONE,
/// number of sections in segment
nsects: u32 = 0,
flags: u32 = 0,
pub fn segName(seg: *const segment_command_64) []const u8 {
return parseName(&seg.segname);
}
pub fn isWriteable(seg: segment_command_64) bool {
return seg.initprot & PROT.WRITE != 0;
}
}