diff --git a/lib/std/coff.zig b/lib/std/coff.zig index 1caec57c4a..ad440e7757 100644 --- a/lib/std/coff.zig +++ b/lib/std/coff.zig @@ -419,6 +419,91 @@ pub const DebugType = enum(u32) { EX_DLLCHARACTERISTICS = 20, }; +pub const ImportDirectoryEntry = extern struct { + /// The RVA of the import lookup table. + /// This table contains a name or ordinal for each import. + /// (The name "Characteristics" is used in Winnt.h, but no longer describes this field.) + import_lookup_table_rva: u32, + + /// The stamp that is set to zero until the image is bound. + /// After the image is bound, this field is set to the time/data stamp of the DLL. + time_date_stamp: u32, + + /// The index of the first forwarder reference. + forwarder_chain: u32, + + /// The address of an ASCII string that contains the name of the DLL. + /// This address is relative to the image base. + name_rva: u32, + + /// The RVA of the import address table. + /// The contents of this table are identical to the contents of the import lookup table until the image is bound. + import_address_table_rva: u32, +}; + +pub const ImportLookupEntry32 = struct { + pub const ByName = packed struct { + name_table_rva: u31, + flag: u1 = 0, + }; + + pub const ByOrdinal = packed struct { + ordinal_number: u16, + unused: u15 = 0, + flag: u1 = 1, + }; + + const mask = 0x80000000; + + pub fn getImportByName(raw: u32) ?ByName { + if (mask & raw != 0) return null; + return @bitCast(ByName, raw); + } + + pub fn getImportByOrdinal(raw: u32) ?ByOrdinal { + if (mask & raw == 0) return null; + return @bitCast(ByOrdinal, raw); + } +}; + +pub const ImportLookupEntry64 = struct { + pub const ByName = packed struct { + name_table_rva: u31, + unused: u32 = 0, + flag: u1 = 0, + }; + + pub const ByOrdinal = packed struct { + ordinal_number: u16, + unused: u47 = 0, + flag: u1 = 1, + }; + + const mask = 0x8000000000000000; + + pub fn getImportByName(raw: u64) ?ByName { + if (mask & raw != 0) return null; + return @bitCast(ByName, raw); + } + + pub fn getImportByOrdinal(raw: u64) ?ByOrdinal { + if (mask & raw == 0) return null; + return @bitCast(ByOrdinal, raw); + } +}; + +/// Every name ends with a NULL byte. IF the NULL byte does not fall on +/// 2byte boundary, the entry structure is padded to ensure 2byte alignment. +pub const ImportHintNameEntry = extern struct { + /// An index into the export name pointer table. + /// A match is attempted first with this value. If it fails, a binary search is performed on the DLL's export name pointer table. + hint: u16, + + /// Pointer to NULL terminated ASCII name. + /// Variable length... + name: [1]u8, +}; + pub const SectionHeader = extern struct { name: [8]u8, virtual_size: u32,