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macho: add decl line and file info to subprogram

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This commit is contained in:
Jakub Konka 2020-12-30 15:55:27 +01:00
parent fa28f7006d
commit 364691fa1f
2 changed files with 31 additions and 40 deletions
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4
src/link/MachO.zig
View File

@ -1199,7 +1199,7 @@ pub fn updateDecl(self: *MachO, module: *Module, decl: *Module.Decl) !void {
// .debug_info subprogram
const decl_name_with_null = decl.name[0 .. mem.lenZ(decl.name) + 1];
try dbg_info_buffer.ensureCapacity(dbg_info_buffer.items.len + 25 + decl_name_with_null.len);
try dbg_info_buffer.ensureCapacity(dbg_info_buffer.items.len + 27 + decl_name_with_null.len);
const fn_ret_type = typed_value.ty.fnReturnType();
const fn_ret_has_bits = fn_ret_type.hasCodeGenBits();
@ -1227,6 +1227,8 @@ pub fn updateDecl(self: *MachO, module: *Module, decl: *Module.Decl) !void {
dbg_info_buffer.items.len += 4; // DW.AT_type, DW.FORM_ref4
}
dbg_info_buffer.appendSliceAssumeCapacity(decl_name_with_null); // DW.AT_name, DW.FORM_string
mem.writeIntLittle(u32, dbg_info_buffer.addManyAsArrayAssumeCapacity(4), line_off + 1); // DW.AT_decl_line, DW.FORM_data4
dbg_info_buffer.appendAssumeCapacity(file_index); // DW.AT_decl_file, DW.FORM_data1
} else {
// TODO implement .debug_info for global variables
}

67
src/link/MachO/DebugSymbols.zig
View File

@ -361,52 +361,41 @@ pub fn flushModule(self: *DebugSymbols, allocator: *Allocator, options: link.Opt
// we can simply append these bytes.
const abbrev_buf = [_]u8{
abbrev_compile_unit, DW.TAG_compile_unit, DW.CHILDREN_yes, // header
DW.AT_stmt_list, DW.FORM_sec_offset, DW.AT_low_pc,
DW.FORM_addr, DW.AT_high_pc, DW.FORM_addr,
DW.AT_name, DW.FORM_strp, DW.AT_comp_dir,
DW.FORM_strp, DW.AT_producer, DW.FORM_strp,
DW.AT_language, DW.FORM_data2, 0,
0, // table sentinel
abbrev_subprogram,
DW.TAG_subprogram,
DW.CHILDREN_yes, // header
DW.AT_low_pc,
DW.FORM_addr,
DW.AT_high_pc,
DW.FORM_data4,
DW.AT_type,
DW.FORM_ref4,
DW.AT_name,
DW.FORM_string,
DW.AT_stmt_list, DW.FORM_sec_offset, // offset
DW.AT_low_pc, DW.FORM_addr,
DW.AT_high_pc, DW.FORM_addr,
DW.AT_name, DW.FORM_strp,
DW.AT_comp_dir, DW.FORM_strp,
DW.AT_producer, DW.FORM_strp,
DW.AT_language, DW.FORM_data2,
0, 0, // table sentinel
abbrev_subprogram, DW.TAG_subprogram, DW.CHILDREN_yes, // header
DW.AT_low_pc, DW.FORM_addr, // start VM address
DW.AT_high_pc, DW.FORM_data4,
DW.AT_type, DW.FORM_ref4,
DW.AT_name, DW.FORM_string,
DW.AT_decl_line, DW.FORM_data4,
DW.AT_decl_file, DW.FORM_data1,
0, 0, // table sentinel
abbrev_subprogram_retvoid,
DW.TAG_subprogram, DW.CHILDREN_yes, // header
DW.AT_low_pc, DW.FORM_addr,
DW.AT_high_pc, DW.FORM_data4,
DW.AT_name, DW.FORM_string,
0,
0, // table sentinel
abbrev_base_type,
DW.TAG_base_type,
DW.CHILDREN_no, // header
DW.AT_encoding,
DW.FORM_data1,
DW.AT_byte_size,
DW.FORM_data1,
DW.AT_name,
DW.FORM_string, 0, 0, // table sentinel
DW.AT_decl_line, DW.FORM_data4,
DW.AT_decl_file, DW.FORM_data1,
0, 0, // table sentinel
abbrev_base_type, DW.TAG_base_type, DW.CHILDREN_no, // header
DW.AT_encoding, DW.FORM_data1, DW.AT_byte_size,
DW.FORM_data1, DW.AT_name, DW.FORM_string,
0, 0, // table sentinel
abbrev_pad1, DW.TAG_unspecified_type, DW.CHILDREN_no, // header
0, 0, // table sentinel
abbrev_parameter,
DW.TAG_formal_parameter, DW.CHILDREN_no, // header
DW.AT_location, DW.FORM_exprloc,
DW.AT_type, DW.FORM_ref4,
DW.AT_name, DW.FORM_string,
0,
0, // table sentinel
0,
0,
0, // section sentinel
0, 0, // table sentinel
abbrev_parameter, DW.TAG_formal_parameter, DW.CHILDREN_no, // header
DW.AT_location, DW.FORM_exprloc, DW.AT_type,
DW.FORM_ref4, DW.AT_name, DW.FORM_string,
0, 0, // table sentinel
0, 0, 0, // section sentinel
};
const needed_size = abbrev_buf.len;