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Merge pull request #11062 from ziglang/dwarf-more-types
This commit is contained in:
Jakub Konka
GitHub
commit
72992b6513
@ -1019,7 +1019,14 @@ fn genArgDbgInfo(emit: *Emit, inst: Air.Inst.Index, mcv: MCValue, max_stack: u32
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switch (emit.debug_output) {
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.dwarf => |dbg_out| {
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try dbg_out.dbg_info.ensureUnusedCapacity(3);
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dbg_out.dbg_info.appendAssumeCapacity(link.File.Elf.abbrev_parameter);
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// TODO this will go away once we pull DWARF into a cross-platform module.
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if (emit.bin_file.cast(link.File.MachO)) |_| {
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dbg_out.dbg_info.appendAssumeCapacity(link.File.MachO.DebugSymbols.abbrev_parameter);
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} else if (emit.bin_file.cast(link.File.Elf)) |_| {
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dbg_out.dbg_info.appendAssumeCapacity(link.File.Elf.abbrev_parameter);
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} else return emit.fail("TODO DWARF in non-MachO and non-ELF backend", .{});
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dbg_out.dbg_info.appendSliceAssumeCapacity(&[2]u8{ // DW.AT.location, DW.FORM.exprloc
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1, // ULEB128 dwarf expression length
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reg.dwarfLocOp(),
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@ -1042,7 +1049,14 @@ fn genArgDbgInfo(emit: *Emit, inst: Air.Inst.Index, mcv: MCValue, max_stack: u32
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// for example when -fomit-frame-pointer is set.
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const disp = @intCast(i32, max_stack) - off + 16;
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try dbg_out.dbg_info.ensureUnusedCapacity(8);
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dbg_out.dbg_info.appendAssumeCapacity(link.File.Elf.abbrev_parameter);
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// TODO this will go away once we pull DWARF into a cross-platform module.
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if (emit.bin_file.cast(link.File.MachO)) |_| {
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dbg_out.dbg_info.appendAssumeCapacity(link.File.MachO.DebugSymbols.abbrev_parameter);
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} else if (emit.bin_file.cast(link.File.Elf)) |_| {
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dbg_out.dbg_info.appendAssumeCapacity(link.File.Elf.abbrev_parameter);
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} else return emit.fail("TODO DWARF in non-MachO and non-ELF backend", .{});
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const fixup = dbg_out.dbg_info.items.len;
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dbg_out.dbg_info.appendSliceAssumeCapacity(&[2]u8{ // DW.AT.location, DW.FORM.exprloc
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1, // we will backpatch it after we encode the displacement in LEB128
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@ -639,7 +639,6 @@ pub fn generateSymbol(
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return Result{ .appended = {} };
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},
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.Optional => {
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// TODO generate debug info for optionals
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var opt_buf: Type.Payload.ElemType = undefined;
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const payload_type = typed_value.ty.optionalChild(&opt_buf);
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const is_pl = !typed_value.val.isNull();
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@ -983,10 +983,9 @@ pub const abbrev_subprogram_retvoid = 3;
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pub const abbrev_base_type = 4;
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pub const abbrev_ptr_type = 5;
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pub const abbrev_struct_type = 6;
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pub const abbrev_anon_struct_type = 7;
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pub const abbrev_struct_member = 8;
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pub const abbrev_pad1 = 9;
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pub const abbrev_parameter = 10;
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pub const abbrev_struct_member = 7;
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pub const abbrev_pad1 = 8;
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pub const abbrev_parameter = 9;
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pub fn flush(self: *Elf, comp: *Compilation) !void {
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if (self.base.options.emit == null) {
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@ -1127,13 +1126,6 @@ pub fn flushModule(self: *Elf, comp: *Compilation) !void {
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DW.FORM.string,
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0,
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0, // table sentinel
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abbrev_anon_struct_type,
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DW.TAG.structure_type,
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DW.CHILDREN.yes, // header
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DW.AT.byte_size,
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DW.FORM.sdata,
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0,
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0, // table sentinel
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abbrev_struct_member,
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DW.TAG.member,
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DW.CHILDREN.no, // header
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@ -3186,6 +3178,7 @@ fn addDbgInfoType(
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dbg_info_buffer: *std.ArrayList(u8),
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dbg_info_type_relocs: *File.DbgInfoTypeRelocsTable,
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) error{OutOfMemory}!void {
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const target = self.base.options.target;
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var relocs = std.ArrayList(struct { ty: Type, reloc: u32 }).init(arena);
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switch (ty.zigTypeTag()) {
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@ -3202,7 +3195,7 @@ fn addDbgInfoType(
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});
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},
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.Int => {
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const info = ty.intInfo(self.base.options.target);
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const info = ty.intInfo(target);
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try dbg_info_buffer.ensureUnusedCapacity(12);
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dbg_info_buffer.appendAssumeCapacity(abbrev_base_type);
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// DW.AT.encoding, DW.FORM.data1
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@ -3211,7 +3204,7 @@ fn addDbgInfoType(
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.unsigned => DW.ATE.unsigned,
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});
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// DW.AT.byte_size, DW.FORM.data1
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dbg_info_buffer.appendAssumeCapacity(@intCast(u8, ty.abiSize(self.base.options.target)));
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dbg_info_buffer.appendAssumeCapacity(@intCast(u8, ty.abiSize(target)));
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// DW.AT.name, DW.FORM.string
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try dbg_info_buffer.writer().print("{}\x00", .{ty});
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},
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@ -3222,23 +3215,61 @@ fn addDbgInfoType(
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// DW.AT.encoding, DW.FORM.data1
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dbg_info_buffer.appendAssumeCapacity(DW.ATE.address);
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// DW.AT.byte_size, DW.FORM.data1
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dbg_info_buffer.appendAssumeCapacity(@intCast(u8, ty.abiSize(self.base.options.target)));
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dbg_info_buffer.appendAssumeCapacity(@intCast(u8, ty.abiSize(target)));
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// DW.AT.name, DW.FORM.string
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try dbg_info_buffer.writer().print("{}\x00", .{ty});
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} else {
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log.debug("TODO implement .debug_info for type '{}'", .{ty});
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try dbg_info_buffer.append(abbrev_pad1);
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// Non-pointer optionals are structs: struct { .maybe = *, .val = * }
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var buf = try arena.create(Type.Payload.ElemType);
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const payload_ty = ty.optionalChild(buf);
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// DW.AT.structure_type
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try dbg_info_buffer.append(abbrev_struct_type);
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// DW.AT.byte_size, DW.FORM.sdata
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const abi_size = ty.abiSize(target);
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try leb128.writeULEB128(dbg_info_buffer.writer(), abi_size);
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// DW.AT.name, DW.FORM.string
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try dbg_info_buffer.writer().print("{}\x00", .{ty});
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// DW.AT.member
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try dbg_info_buffer.ensureUnusedCapacity(7);
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dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
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// DW.AT.name, DW.FORM.string
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dbg_info_buffer.appendSliceAssumeCapacity("maybe");
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dbg_info_buffer.appendAssumeCapacity(0);
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// DW.AT.type, DW.FORM.ref4
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var index = dbg_info_buffer.items.len;
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try dbg_info_buffer.resize(index + 4);
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try relocs.append(.{ .ty = Type.bool, .reloc = @intCast(u32, index) });
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// DW.AT.data_member_location, DW.FORM.sdata
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try dbg_info_buffer.ensureUnusedCapacity(6);
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dbg_info_buffer.appendAssumeCapacity(0);
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// DW.AT.member
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dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
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// DW.AT.name, DW.FORM.string
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dbg_info_buffer.appendSliceAssumeCapacity("val");
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dbg_info_buffer.appendAssumeCapacity(0);
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// DW.AT.type, DW.FORM.ref4
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index = dbg_info_buffer.items.len;
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try dbg_info_buffer.resize(index + 4);
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try relocs.append(.{ .ty = payload_ty, .reloc = @intCast(u32, index) });
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// DW.AT.data_member_location, DW.FORM.sdata
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const offset = abi_size - payload_ty.abiSize(target);
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try leb128.writeULEB128(dbg_info_buffer.writer(), offset);
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// DW.AT.structure_type delimit children
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try dbg_info_buffer.append(0);
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}
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},
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.Pointer => {
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if (ty.isSlice()) {
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// Slices are anonymous structs: struct { .ptr = *, .len = N }
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try dbg_info_buffer.ensureUnusedCapacity(23);
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// Slices are structs: struct { .ptr = *, .len = N }
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// DW.AT.structure_type
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dbg_info_buffer.appendAssumeCapacity(abbrev_anon_struct_type);
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try dbg_info_buffer.ensureUnusedCapacity(2);
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dbg_info_buffer.appendAssumeCapacity(abbrev_struct_type);
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// DW.AT.byte_size, DW.FORM.sdata
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dbg_info_buffer.appendAssumeCapacity(16);
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dbg_info_buffer.appendAssumeCapacity(@sizeOf(usize) * 2);
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// DW.AT.name, DW.FORM.string
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try dbg_info_buffer.writer().print("{}\x00", .{ty});
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// DW.AT.member
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try dbg_info_buffer.ensureUnusedCapacity(5);
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dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
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// DW.AT.name, DW.FORM.string
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dbg_info_buffer.appendSliceAssumeCapacity("ptr");
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@ -3250,6 +3281,7 @@ fn addDbgInfoType(
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const ptr_ty = ty.slicePtrFieldType(buf);
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try relocs.append(.{ .ty = ptr_ty, .reloc = @intCast(u32, index) });
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// DW.AT.data_member_location, DW.FORM.sdata
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try dbg_info_buffer.ensureUnusedCapacity(6);
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dbg_info_buffer.appendAssumeCapacity(0);
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// DW.AT.member
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dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
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@ -3261,7 +3293,8 @@ fn addDbgInfoType(
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try dbg_info_buffer.resize(index + 4);
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try relocs.append(.{ .ty = Type.initTag(.usize), .reloc = @intCast(u32, index) });
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// DW.AT.data_member_location, DW.FORM.sdata
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dbg_info_buffer.appendAssumeCapacity(8);
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try dbg_info_buffer.ensureUnusedCapacity(2);
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dbg_info_buffer.appendAssumeCapacity(@sizeOf(usize));
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// DW.AT.structure_type delimit children
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dbg_info_buffer.appendAssumeCapacity(0);
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} else {
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@ -3278,7 +3311,7 @@ fn addDbgInfoType(
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// DW.AT.structure_type
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try dbg_info_buffer.append(abbrev_struct_type);
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// DW.AT.byte_size, DW.FORM.sdata
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const abi_size = ty.abiSize(self.base.options.target);
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const abi_size = ty.abiSize(target);
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try leb128.writeULEB128(dbg_info_buffer.writer(), abi_size);
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// DW.AT.name, DW.FORM.string
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const struct_name = try ty.nameAlloc(arena);
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@ -3306,7 +3339,7 @@ fn addDbgInfoType(
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try dbg_info_buffer.resize(index + 4);
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try relocs.append(.{ .ty = field.ty, .reloc = @intCast(u32, index) });
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// DW.AT.data_member_location, DW.FORM.sdata
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const field_off = ty.structFieldOffset(field_index, self.base.options.target);
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const field_off = ty.structFieldOffset(field_index, target);
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try leb128.writeULEB128(dbg_info_buffer.writer(), field_off);
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}
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@ -27,7 +27,6 @@ const Atom = @import("MachO/Atom.zig");
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const Cache = @import("../Cache.zig");
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const CodeSignature = @import("MachO/CodeSignature.zig");
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const Compilation = @import("../Compilation.zig");
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const DebugSymbols = @import("MachO/DebugSymbols.zig");
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const Dylib = @import("MachO/Dylib.zig");
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const File = link.File;
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const Object = @import("MachO/Object.zig");
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@ -43,6 +42,7 @@ const TypedValue = @import("../TypedValue.zig");
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const Value = @import("../value.zig").Value;
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pub const TextBlock = Atom;
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pub const DebugSymbols = @import("MachO/DebugSymbols.zig");
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pub const base_tag: File.Tag = File.Tag.macho;
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@ -2178,6 +2178,34 @@ fn writeAllAtoms(self: *MachO) !void {
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}
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}
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fn writePadding(self: *MachO, match: MatchingSection, size: usize, writer: anytype) !void {
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const is_code = match.seg == self.text_segment_cmd_index.? and match.sect == self.text_section_index.?;
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const min_alignment: u3 = if (!is_code)
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1
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else switch (self.base.options.target.cpu.arch) {
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.aarch64 => @sizeOf(u32),
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.x86_64 => @as(u3, 1),
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else => unreachable,
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};
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const len = @divExact(size, min_alignment);
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var i: usize = 0;
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while (i < len) : (i += 1) {
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if (!is_code) {
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try writer.writeByte(0);
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} else switch (self.base.options.target.cpu.arch) {
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.aarch64 => {
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const inst = aarch64.Instruction.nop();
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try writer.writeIntLittle(u32, inst.toU32());
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},
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.x86_64 => {
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try writer.writeByte(0x90);
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},
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else => unreachable,
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}
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}
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}
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fn writeAtoms(self: *MachO) !void {
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var buffer = std.ArrayList(u8).init(self.base.allocator);
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defer buffer.deinit();
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@ -2213,11 +2241,7 @@ fn writeAtoms(self: *MachO) !void {
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try atom.resolveRelocs(self);
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try buffer.appendSlice(atom.code.items);
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try buffer.ensureUnusedCapacity(padding_size);
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var i: usize = 0;
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while (i < padding_size) : (i += 1) {
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buffer.appendAssumeCapacity(0);
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}
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try self.writePadding(match, padding_size, buffer.writer());
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if (file_offset == null) {
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file_offset = sect.offset + atom_sym.n_value - sect.addr;
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@ -78,16 +78,15 @@ debug_aranges_section_dirty: bool = false,
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debug_info_header_dirty: bool = false,
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debug_line_header_dirty: bool = false,
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const abbrev_compile_unit = 1;
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const abbrev_subprogram = 2;
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const abbrev_subprogram_retvoid = 3;
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const abbrev_base_type = 4;
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const abbrev_ptr_type = 5;
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const abbrev_struct_type = 6;
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const abbrev_anon_struct_type = 7;
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const abbrev_struct_member = 8;
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const abbrev_pad1 = 9;
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const abbrev_parameter = 10;
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pub const abbrev_compile_unit = 1;
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pub const abbrev_subprogram = 2;
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pub const abbrev_subprogram_retvoid = 3;
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pub const abbrev_base_type = 4;
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pub const abbrev_ptr_type = 5;
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pub const abbrev_struct_type = 6;
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pub const abbrev_struct_member = 7;
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pub const abbrev_pad1 = 8;
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pub const abbrev_parameter = 9;
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/// The reloc offset for the virtual address of a function in its Line Number Program.
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/// Size is a virtual address integer.
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@ -353,13 +352,6 @@ pub fn flushModule(self: *DebugSymbols, allocator: Allocator, options: link.Opti
|
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DW.FORM.string,
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0,
|
||||
0, // table sentinel
|
||||
abbrev_anon_struct_type,
|
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DW.TAG.structure_type,
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||||
DW.CHILDREN.yes, // header
|
||||
DW.AT.byte_size,
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DW.FORM.sdata,
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0,
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||||
0, // table sentinel
|
||||
abbrev_struct_member,
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DW.TAG.member,
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DW.CHILDREN.no, // header
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||||
@ -1134,18 +1126,6 @@ pub fn commitDeclDebugInfo(
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mem.writeIntLittle(u32, ptr, @intCast(u32, text_block.size));
|
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}
|
||||
|
||||
{
|
||||
// Advance line and PC.
|
||||
// TODO encapsulate logic in a helper function.
|
||||
try dbg_line_buffer.append(DW.LNS.advance_pc);
|
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try leb.writeULEB128(dbg_line_buffer.writer(), text_block.size);
|
||||
|
||||
try dbg_line_buffer.append(DW.LNS.advance_line);
|
||||
const func = decl.val.castTag(.function).?.data;
|
||||
const line_off = @intCast(u28, func.rbrace_line - func.lbrace_line);
|
||||
try leb.writeULEB128(dbg_line_buffer.writer(), line_off);
|
||||
}
|
||||
|
||||
try dbg_line_buffer.appendSlice(&[_]u8{ DW.LNS.extended_op, 1, DW.LNE.end_sequence });
|
||||
|
||||
// Now we have the full contents and may allocate a region to store it.
|
||||
@ -1332,19 +1312,57 @@ fn addDbgInfoType(
|
||||
// DW.AT.name, DW.FORM.string
|
||||
try dbg_info_buffer.writer().print("{}\x00", .{ty});
|
||||
} else {
|
||||
log.debug("TODO implement .debug_info for type '{}'", .{ty});
|
||||
try dbg_info_buffer.append(abbrev_pad1);
|
||||
// Non-pointer optionals are structs: struct { .maybe = *, .val = * }
|
||||
var buf = try arena.create(Type.Payload.ElemType);
|
||||
const payload_ty = ty.optionalChild(buf);
|
||||
// DW.AT.structure_type
|
||||
try dbg_info_buffer.append(abbrev_struct_type);
|
||||
// DW.AT.byte_size, DW.FORM.sdata
|
||||
const abi_size = ty.abiSize(target);
|
||||
try leb128.writeULEB128(dbg_info_buffer.writer(), abi_size);
|
||||
// DW.AT.name, DW.FORM.string
|
||||
try dbg_info_buffer.writer().print("{}\x00", .{ty});
|
||||
// DW.AT.member
|
||||
try dbg_info_buffer.ensureUnusedCapacity(7);
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
|
||||
// DW.AT.name, DW.FORM.string
|
||||
dbg_info_buffer.appendSliceAssumeCapacity("maybe");
|
||||
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 = Type.bool, .reloc = @intCast(u32, index) });
|
||||
// DW.AT.data_member_location, DW.FORM.sdata
|
||||
try dbg_info_buffer.ensureUnusedCapacity(6);
|
||||
dbg_info_buffer.appendAssumeCapacity(0);
|
||||
// DW.AT.member
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
|
||||
// DW.AT.name, DW.FORM.string
|
||||
dbg_info_buffer.appendSliceAssumeCapacity("val");
|
||||
dbg_info_buffer.appendAssumeCapacity(0);
|
||||
// DW.AT.type, DW.FORM.ref4
|
||||
index = dbg_info_buffer.items.len;
|
||||
try dbg_info_buffer.resize(index + 4);
|
||||
try relocs.append(.{ .ty = payload_ty, .reloc = @intCast(u32, index) });
|
||||
// DW.AT.data_member_location, DW.FORM.sdata
|
||||
const offset = abi_size - payload_ty.abiSize(target);
|
||||
try leb128.writeULEB128(dbg_info_buffer.writer(), offset);
|
||||
// DW.AT.structure_type delimit children
|
||||
try dbg_info_buffer.append(0);
|
||||
}
|
||||
},
|
||||
.Pointer => {
|
||||
if (ty.isSlice()) {
|
||||
// Slices are anonymous structs: struct { .ptr = *, .len = N }
|
||||
try dbg_info_buffer.ensureUnusedCapacity(23);
|
||||
// Slices are structs: struct { .ptr = *, .len = N }
|
||||
// DW.AT.structure_type
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_anon_struct_type);
|
||||
try dbg_info_buffer.ensureUnusedCapacity(2);
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_struct_type);
|
||||
// DW.AT.byte_size, DW.FORM.sdata
|
||||
dbg_info_buffer.appendAssumeCapacity(16);
|
||||
dbg_info_buffer.appendAssumeCapacity(@sizeOf(usize) * 2);
|
||||
// DW.AT.name, DW.FORM.string
|
||||
try dbg_info_buffer.writer().print("{}\x00", .{ty});
|
||||
// DW.AT.member
|
||||
try dbg_info_buffer.ensureUnusedCapacity(5);
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
|
||||
// DW.AT.name, DW.FORM.string
|
||||
dbg_info_buffer.appendSliceAssumeCapacity("ptr");
|
||||
@ -1356,6 +1374,7 @@ fn addDbgInfoType(
|
||||
const ptr_ty = ty.slicePtrFieldType(buf);
|
||||
try relocs.append(.{ .ty = ptr_ty, .reloc = @intCast(u32, index) });
|
||||
// DW.AT.data_member_location, DW.FORM.sdata
|
||||
try dbg_info_buffer.ensureUnusedCapacity(6);
|
||||
dbg_info_buffer.appendAssumeCapacity(0);
|
||||
// DW.AT.member
|
||||
dbg_info_buffer.appendAssumeCapacity(abbrev_struct_member);
|
||||
@ -1367,7 +1386,8 @@ fn addDbgInfoType(
|
||||
try dbg_info_buffer.resize(index + 4);
|
||||
try relocs.append(.{ .ty = Type.initTag(.usize), .reloc = @intCast(u32, index) });
|
||||
// DW.AT.data_member_location, DW.FORM.sdata
|
||||
dbg_info_buffer.appendAssumeCapacity(8);
|
||||
try dbg_info_buffer.ensureUnusedCapacity(2);
|
||||
dbg_info_buffer.appendAssumeCapacity(@sizeOf(usize));
|
||||
// DW.AT.structure_type delimit children
|
||||
dbg_info_buffer.appendAssumeCapacity(0);
|
||||
} else {
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user