authorgravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2024-03-22 15:12:11+01:00
committergravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2024-03-22 15:12:11+01:00
log86c4c33d2cfb4d7dbb2e9f0e699f482afdf59ca1
treeb08d5492610e7f688f62aeb9152b82261a00537d
parent2326f0e53b95a1aa22fec1d9f89bd4c2c9bbf70a

lib/std/coff: add ImportHeader, and Relocation metadata

1 files changed, 163 insertions(+), 0 deletions(-)

lib/std/coff.zig+163
......@@ -1422,3 +1422,166 @@ pub const Strtab = struct {
14221422 return mem.sliceTo(@as([*:0]const u8, @ptrCast(self.buffer.ptr + off)), 0);
14231423 }
14241424};
1425
1426pub const ImportHeader = extern struct {
1427 sig1: MachineType,
1428 sig2: u16,
1429 version: u16,
1430 machine: MachineType,
1431 time_date_stamp: u32,
1432 size_of_data: u32,
1433 hint: u16,
1434 types: packed struct {
1435 type: ImportType,
1436 name_type: ImportNameType,
1437 reserved: u11,
1438 },
1439};
1440
1441pub const ImportType = enum(u2) {
1442 /// Executable code.
1443 CODE = 0,
1444 /// Data.
1445 DATA = 1,
1446 /// Specified as CONST in .def file.
1447 CONST = 2,
1448 _,
1449};
1450
1451pub const ImportNameType = enum(u3) {
1452 /// The import is by ordinal. This indicates that the value in the Ordinal/Hint
1453 /// field of the import header is the import's ordinal. If this constant is not
1454 /// specified, then the Ordinal/Hint field should always be interpreted as the import's hint.
1455 ORDINAL = 0,
1456 /// The import name is identical to the public symbol name.
1457 NAME = 1,
1458 /// The import name is the public symbol name, but skipping the leading ?, @, or optionally _.
1459 NAME_NOPREFIX = 2,
1460 /// The import name is the public symbol name, but skipping the leading ?, @, or optionally _,
1461 /// and truncating at the first @.
1462 NAME_UNDECORATE = 3,
1463 _,
1464};
1465
1466pub const Relocation = extern struct {
1467 virtual_address: u32,
1468 symbol_table_index: u32,
1469 type: u16,
1470};
1471
1472pub const ImageRelAmd64 = enum(u16) {
1473 /// The relocation is ignored.
1474 absolute = 0,
1475
1476 /// The 64-bit VA of the relocation target.
1477 addr64 = 1,
1478
1479 /// The 32-bit VA of the relocation target.
1480 addr32 = 2,
1481
1482 /// The 32-bit address without an image base.
1483 addr32nb = 3,
1484
1485 /// The 32-bit relative address from the byte following the relocation.
1486 rel32 = 4,
1487
1488 /// The 32-bit address relative to byte distance 1 from the relocation.
1489 rel32_1 = 5,
1490
1491 /// The 32-bit address relative to byte distance 2 from the relocation.
1492 rel32_2 = 6,
1493
1494 /// The 32-bit address relative to byte distance 3 from the relocation.
1495 rel32_3 = 7,
1496
1497 /// The 32-bit address relative to byte distance 4 from the relocation.
1498 rel32_4 = 8,
1499
1500 /// The 32-bit address relative to byte distance 5 from the relocation.
1501 rel32_5 = 9,
1502
1503 /// The 16-bit section index of the section that contains the target.
1504 /// This is used to support debugging information.
1505 section = 10,
1506
1507 /// The 32-bit offset of the target from the beginning of its section.
1508 /// This is used to support debugging information and static thread local storage.
1509 secrel = 11,
1510
1511 /// A 7-bit unsigned offset from the base of the section that contains the target.
1512 secrel7 = 12,
1513
1514 /// CLR tokens.
1515 token = 13,
1516
1517 /// A 32-bit signed span-dependent value emitted into the object.
1518 srel32 = 14,
1519
1520 /// A pair that must immediately follow every span-dependent value.
1521 pair = 15,
1522
1523 /// A 32-bit signed span-dependent value that is applied at link time.
1524 sspan32 = 16,
1525
1526 _,
1527};
1528
1529pub const ImageRelArm64 = enum(u16) {
1530 /// The relocation is ignored.
1531 absolute = 0,
1532
1533 /// The 32-bit VA of the target.
1534 addr32 = 1,
1535
1536 /// The 32-bit RVA of the target.
1537 addr32nb = 2,
1538
1539 /// The 26-bit relative displacement to the target, for B and BL instructions.
1540 branch26 = 3,
1541
1542 /// The page base of the target, for ADRP instruction.
1543 pagebase_rel21 = 4,
1544
1545 /// The 21-bit relative displacement to the target, for instruction ADR.
1546 rel21 = 5,
1547
1548 /// The 12-bit page offset of the target, for instructions ADD/ADDS (immediate) with zero shift.
1549 pageoffset_12a = 6,
1550
1551 /// The 12-bit page offset of the target, for instruction LDR (indexed, unsigned immediate).
1552 pageoffset_12l = 7,
1553
1554 /// The 32-bit offset of the target from the beginning of its section.
1555 /// This is used to support debugging information and static thread local storage.
1556 secrel = 8,
1557
1558 /// Bit 0:11 of section offset of the target for instructions ADD/ADDS (immediate) with zero shift.
1559 low12a = 9,
1560
1561 /// Bit 12:23 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift.
1562 high12a = 10,
1563
1564 /// Bit 0:11 of section offset of the target, for instruction LDR (indexed, unsigned immediate).
1565 low12l = 11,
1566
1567 /// CLR token.
1568 token = 12,
1569
1570 /// The 16-bit section index of the section that contains the target.
1571 /// This is used to support debugging information.
1572 section = 13,
1573
1574 /// The 64-bit VA of the relocation target.
1575 addr64 = 14,
1576
1577 /// The 19-bit offset to the relocation target, for conditional B instruction.
1578 branch19 = 15,
1579
1580 /// The 14-bit offset to the relocation target, for instructions TBZ and TBNZ.
1581 branch14 = 16,
1582
1583 /// The 32-bit relative address from the byte following the relocation.
1584 rel32 = 17,
1585
1586 _,
1587};