diff options
| -rw-r--r-- | src/link/Elf.zig | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/src/link/Elf.zig b/src/link/Elf.zig index 2963ec2eee..37afd68c82 100644 --- a/src/link/Elf.zig +++ b/src/link/Elf.zig @@ -855,10 +855,11 @@ pub const abbrev_subprogram = 2; pub const abbrev_subprogram_retvoid = 3; pub const abbrev_base_type = 4; pub const abbrev_ptr_type = 5; -pub const abbrev_anon_struct_type = 6; -pub const abbrev_struct_member = 7; -pub const abbrev_pad1 = 8; -pub const abbrev_parameter = 9; +pub const abbrev_struct_type = 6; +pub const abbrev_anon_struct_type = 7; +pub const abbrev_struct_member = 8; +pub const abbrev_pad1 = 9; +pub const abbrev_parameter = 10; pub fn flush(self: *Elf, comp: *Compilation) !void { if (self.base.options.emit == null) { @@ -955,6 +956,15 @@ pub fn flushModule(self: *Elf, comp: *Compilation) !void { DW.FORM.ref4, 0, 0, // table sentinel + abbrev_struct_type, + DW.TAG.structure_type, + DW.CHILDREN.yes, // header + DW.AT.byte_size, + DW.FORM.sdata, + DW.AT.name, + DW.FORM.string, + 0, + 0, // table sentinel abbrev_anon_struct_type, DW.TAG.structure_type, DW.CHILDREN.yes, // header @@ -2968,6 +2978,46 @@ fn addDbgInfoType( try relocs.append(.{ .ty = ty.childType(), .reloc = @intCast(u32, index) }); } }, + .Struct => blk: { + // try dbg_info_buffer.ensureUnusedCapacity(23); + // DW.AT.structure_type + try dbg_info_buffer.append(abbrev_struct_type); + // DW.AT.byte_size, DW.FORM.sdata + const abi_size = ty.abiSize(self.base.options.target); + try leb128.writeULEB128(dbg_info_buffer.writer(), abi_size); + // DW.AT.name, DW.FORM.string + const struct_name = try ty.nameAlloc(arena); + try dbg_info_buffer.ensureUnusedCapacity(struct_name.len + 1); + dbg_info_buffer.appendSliceAssumeCapacity(struct_name); + dbg_info_buffer.appendAssumeCapacity(0); + + const struct_obj = ty.castTag(.@"struct").?.data; + if (struct_obj.layout == .Packed) { + log.debug("TODO implement .debug_info for packed structs", .{}); + break :blk; + } + + const fields = ty.structFields(); + for (fields.keys()) |field_name, field_index| { + const field = fields.get(field_name).?; + // DW.AT.member + try dbg_info_buffer.ensureUnusedCapacity(field_name.len + 2); + dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member); + // DW.AT.name, DW.FORM.string + dbg_info_buffer.appendSliceAssumeCapacity(field_name); + dbg_info_buffer.appendAssumeCapacity(0); + // DW.AT.type, DW.FORM.ref4 + var index = dbg_info_buffer.items.len; + try dbg_info_buffer.resize(index + 4); + try relocs.append(.{ .ty = field.ty, .reloc = @intCast(u32, index) }); + // DW.AT.data_member_location, DW.FORM.sdata + const field_off = ty.structFieldOffset(field_index, self.base.options.target); + try leb128.writeULEB128(dbg_info_buffer.writer(), field_off); + } + + // DW.AT.structure_type delimit children + try dbg_info_buffer.append(0); + }, else => { log.debug("TODO implement .debug_info for type '{}'", .{ty}); try dbg_info_buffer.append(abbrev_pad1); |