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expose std.debug.DwarfInfo and delete unused function

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This commit is contained in:
Andrew Kelley 2018-12-02 20:08:06 -05:00
parent a436d2ab8c
commit 5c3b8cb365
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GPG Key ID: 7C5F548F728501A9
1 changed files with 26 additions and 48 deletions
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74
std/debug/index.zig
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@ -950,30 +950,6 @@ fn openSelfDebugInfoLinux(allocator: *mem.Allocator) !DebugInfo {
);
}
pub fn findElfSection(elf: *Elf, name: []const u8) ?*elf.Shdr {
var file_stream = elf.in_file.inStream();
const in = &file_stream.stream;
section_loop: for (elf.section_headers) |*elf_section| {
if (elf_section.sh_type == SHT_NULL) continue;
const name_offset = elf.string_section.offset + elf_section.name;
try elf.in_file.seekTo(name_offset);
for (name) |expected_c| {
const target_c = try in.readByte();
if (target_c == 0 or expected_c != target_c) continue :section_loop;
}
{
const null_byte = try in.readByte();
if (null_byte == 0) return elf_section;
}
}
return null;
}
fn openSelfDebugInfoMacOs(allocator: *mem.Allocator) !DebugInfo {
const hdr = &std.c._mh_execute_header;
assert(hdr.magic == std.macho.MH_MAGIC_64);
@ -1107,6 +1083,31 @@ const MachOFile = struct {
pub const DwarfSeekableStream = io.SeekableStream(anyerror, anyerror);
pub const DwarfInStream = io.InStream(anyerror);
pub const DwarfInfo = struct {
dwarf_seekable_stream: *DwarfSeekableStream,
dwarf_in_stream: *DwarfInStream,
elf: elf.Elf,
debug_info: *elf.SectionHeader,
debug_abbrev: *elf.SectionHeader,
debug_str: *elf.SectionHeader,
debug_line: *elf.SectionHeader,
debug_ranges: ?*elf.SectionHeader,
abbrev_table_list: ArrayList(AbbrevTableHeader),
compile_unit_list: ArrayList(CompileUnit),
pub fn allocator(self: DebugInfo) *mem.Allocator {
return self.abbrev_table_list.allocator;
}
pub fn readString(self: *DebugInfo) ![]u8 {
return readStringRaw(self.allocator(), self.dwarf_in_stream);
}
pub fn close(self: *DebugInfo) void {
self.elf.close();
}
};
pub const DebugInfo = switch (builtin.os) {
builtin.Os.macosx => struct {
symbols: []const MachoSymbol,
@ -1130,30 +1131,7 @@ pub const DebugInfo = switch (builtin.os) {
sect_contribs: []pdb.SectionContribEntry,
modules: []Module,
},
builtin.Os.linux => struct {
dwarf_seekable_stream: *DwarfSeekableStream,
dwarf_in_stream: *DwarfInStream,
elf: elf.Elf,
debug_info: *elf.SectionHeader,
debug_abbrev: *elf.SectionHeader,
debug_str: *elf.SectionHeader,
debug_line: *elf.SectionHeader,
debug_ranges: ?*elf.SectionHeader,
abbrev_table_list: ArrayList(AbbrevTableHeader),
compile_unit_list: ArrayList(CompileUnit),
pub fn allocator(self: DebugInfo) *mem.Allocator {
return self.abbrev_table_list.allocator;
}
pub fn readString(self: *DebugInfo) ![]u8 {
return readStringRaw(self.allocator(), self.dwarf_in_stream);
}
pub fn close(self: *DebugInfo) void {
self.elf.close();
}
},
builtin.Os.linux => DwarfInfo,
builtin.Os.freebsd => struct {},
else => @compileError("Unsupported OS"),
};