mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-12 20:37:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

dwarf: gen debug info for arrays

Browse Source
This commit is contained in:
Jakub Konka 2022-04-13 16:22:24 +02:00
parent 4c50a27d68
commit 0bf7283330
2 changed files with 35 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/codegen.zig
View File

@ -203,7 +203,6 @@ pub fn generateSymbol(
},
.Array => switch (typed_value.val.tag()) {
.bytes => {
// TODO populate .debug_info for the array
const payload = typed_value.val.castTag(.bytes).?;
const len = @intCast(usize, typed_value.ty.arrayLenIncludingSentinel());
// The bytes payload already includes the sentinel, if any
@ -212,7 +211,6 @@ pub fn generateSymbol(
return Result{ .appended = {} };
},
.aggregate => {
// TODO populate .debug_info for the array
const elem_vals = typed_value.val.castTag(.aggregate).?.data;
const elem_ty = typed_value.ty.elemType();
const len = @intCast(usize, typed_value.ty.arrayLenIncludingSentinel());

35
src/link/Dwarf.zig
View File

@ -270,6 +270,27 @@ pub const DeclState = struct {
try self.addTypeReloc(atom, ty.childType(), @intCast(u32, index), null);
}
},
.Array => {
// DW.AT.array_type
try dbg_info_buffer.append(@enumToInt(AbbrevKind.array_type));
// DW.AT.name, DW.FORM.string
try dbg_info_buffer.writer().print("{}\x00", .{ty.fmt(target)});
// DW.AT.type, DW.FORM.ref4
var index = dbg_info_buffer.items.len;
try dbg_info_buffer.resize(index + 4);
try self.addTypeReloc(atom, ty.childType(), @intCast(u32, index), null);
// DW.AT.subrange_type
try dbg_info_buffer.append(@enumToInt(AbbrevKind.array_dim));
// DW.AT.type, DW.FORM.ref4
index = dbg_info_buffer.items.len;
try dbg_info_buffer.resize(index + 4);
try self.addTypeReloc(atom, Type.usize, @intCast(u32, index), null);
// DW.AT.count, DW.FORM.udata
const len = ty.arrayLenIncludingSentinel();
try leb128.writeULEB128(dbg_info_buffer.writer(), len);
// DW.AT.array_type delimit children
try dbg_info_buffer.append(0);
},
.Struct => blk: {
// DW.AT.structure_type
try dbg_info_buffer.append(@enumToInt(AbbrevKind.struct_type));
@ -564,6 +585,8 @@ pub const AbbrevKind = enum(u8) {
pad1,
parameter,
variable,
array_type,
array_dim,
};
/// The reloc offset for the virtual address of a function in its Line Number Program.
@ -1357,6 +1380,18 @@ pub fn writeDbgAbbrev(self: *Dwarf, file: *File) !void {
DW.AT.name, DW.FORM.string,
0,
0, // table sentinel
@enumToInt(AbbrevKind.array_type),
DW.TAG.array_type, DW.CHILDREN.yes, // header
DW.AT.name, DW.FORM.string,
DW.AT.type, DW.FORM.ref4,
0,
0, // table sentinel
@enumToInt(AbbrevKind.array_dim),
DW.TAG.subrange_type, DW.CHILDREN.no, // header
DW.AT.type, DW.FORM.ref4,
DW.AT.count, DW.FORM.udata,
0,
0, // table sentinel
0,
0,
0, // section sentinel