authorgravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2023-07-13 21:27:18+02:00
committergravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2023-07-13 21:27:18+02:00
log77026c67a42050cf6c15531d784afbf16c67c23c
tree7f95a0c3f2f32f0490084788fdfe64100381094b
parent33154b511cbf96e0c95e8bad0c5e19ba54371964

check-object: dump info on PHDRs

1 files changed, 102 insertions(+), 39 deletions(-)

lib/std/Build/Step/CheckObject.zig+102-39
......@@ -785,6 +785,7 @@ const ElfDumper = struct {
785785
786786 try dumpHeader(ctx, writer);
787787 try dumpShdrs(ctx, writer);
788 try dumpPhdrs(ctx, writer);
788789
789790 return output.toOwnedSlice();
790791 }
......@@ -814,52 +815,114 @@ const ElfDumper = struct {
814815 for (ctx.shdrs, 0..) |shdr, shndx| {
815816 try writer.print("shdr {d}\n", .{shndx});
816817 try writer.print("name {s}\n", .{getSectionName(ctx, shndx)});
817 try writer.print("type {s}\n", .{try fmtShType(ctx.gpa, shdr.sh_type)});
818 try writer.print("type {s}\n", .{fmtShType(shdr.sh_type)});
818819 try writer.print("addr {x}\n", .{shdr.sh_addr});
819820 try writer.print("offset {x}\n", .{shdr.sh_offset});
820821 try writer.print("size {x}\n", .{shdr.sh_size});
821822 try writer.print("addralign {x}\n", .{shdr.sh_addralign});
823 // TODO dump formatted sh_flags
822824 }
823825 }
824826
825 fn fmtShType(gpa: Allocator, sh_type: u32) ![]const u8 {
826 return switch (sh_type) {
827 elf.SHT_NULL => "NULL",
828 elf.SHT_PROGBITS => "PROGBITS",
829 elf.SHT_SYMTAB => "SYMTAB",
830 elf.SHT_STRTAB => "STRTAB",
831 elf.SHT_RELA => "RELA",
832 elf.SHT_HASH => "HASH",
833 elf.SHT_DYNAMIC => "DYNAMIC",
834 elf.SHT_NOTE => "NOTE",
835 elf.SHT_NOBITS => "NOBITS",
836 elf.SHT_REL => "REL",
837 elf.SHT_SHLIB => "SHLIB",
838 elf.SHT_DYNSYM => "DYNSYM",
839 elf.SHT_INIT_ARRAY => "INIT_ARRAY",
840 elf.SHT_FINI_ARRAY => "FINI_ARRAY",
841 elf.SHT_PREINIT_ARRAY => "PREINIT_ARRAY",
842 elf.SHT_GROUP => "GROUP",
843 elf.SHT_SYMTAB_SHNDX => "SYMTAB_SHNDX",
844 elf.SHT_X86_64_UNWIND => "X86_64_UNWIND",
845 elf.SHT_LLVM_ADDRSIG => "LLVM_ADDRSIG",
846 elf.SHT_GNU_HASH => "GNU_HASH",
847 elf.SHT_GNU_VERDEF => "VERDEF",
848 elf.SHT_GNU_VERNEED => "VERNEED",
849 elf.SHT_GNU_VERSYM => "VERSYM",
850 else => |sht| blk: {
851 if (elf.SHT_LOOS <= sht and sht < elf.SHT_HIOS) {
852 break :blk try std.fmt.allocPrint(gpa, "LOOS+0x{x}", .{sht - elf.SHT_LOOS});
853 }
854 if (elf.SHT_LOPROC <= sht and sht < elf.SHT_HIPROC) {
855 break :blk try std.fmt.allocPrint(gpa, "LOPROC+0x{x}", .{sht - elf.SHT_LOPROC});
856 }
857 if (elf.SHT_LOUSER <= sht and sht < elf.SHT_HIUSER) {
858 break :blk try std.fmt.allocPrint(gpa, "LOUSER+0x{x}", .{sht - elf.SHT_LOUSER});
859 }
860 break :blk "UNKNOWN";
861 },
862 };
827 fn fmtShType(sh_type: u32) std.fmt.Formatter(formatShType) {
828 return .{ .data = sh_type };
829 }
830
831 fn formatShType(
832 sh_type: u32,
833 comptime unused_fmt_string: []const u8,
834 options: std.fmt.FormatOptions,
835 writer: anytype,
836 ) !void {
837 _ = unused_fmt_string;
838 _ = options;
839 if (elf.SHT_LOOS <= sh_type and sh_type < elf.SHT_HIOS) {
840 try writer.print("LOOS+0x{x}", .{sh_type - elf.SHT_LOOS});
841 } else if (elf.SHT_LOPROC <= sh_type and sh_type < elf.SHT_HIPROC) {
842 try writer.print("LOPROC+0x{x}", .{sh_type - elf.SHT_LOPROC});
843 } else if (elf.SHT_LOUSER <= sh_type and sh_type < elf.SHT_HIUSER) {
844 try writer.print("LOUSER+0x{x}", .{sh_type - elf.SHT_LOUSER});
845 } else {
846 const name = switch (sh_type) {
847 elf.SHT_NULL => "NULL",
848 elf.SHT_PROGBITS => "PROGBITS",
849 elf.SHT_SYMTAB => "SYMTAB",
850 elf.SHT_STRTAB => "STRTAB",
851 elf.SHT_RELA => "RELA",
852 elf.SHT_HASH => "HASH",
853 elf.SHT_DYNAMIC => "DYNAMIC",
854 elf.SHT_NOTE => "NOTE",
855 elf.SHT_NOBITS => "NOBITS",
856 elf.SHT_REL => "REL",
857 elf.SHT_SHLIB => "SHLIB",
858 elf.SHT_DYNSYM => "DYNSYM",
859 elf.SHT_INIT_ARRAY => "INIT_ARRAY",
860 elf.SHT_FINI_ARRAY => "FINI_ARRAY",
861 elf.SHT_PREINIT_ARRAY => "PREINIT_ARRAY",
862 elf.SHT_GROUP => "GROUP",
863 elf.SHT_SYMTAB_SHNDX => "SYMTAB_SHNDX",
864 elf.SHT_X86_64_UNWIND => "X86_64_UNWIND",
865 elf.SHT_LLVM_ADDRSIG => "LLVM_ADDRSIG",
866 elf.SHT_GNU_HASH => "GNU_HASH",
867 elf.SHT_GNU_VERDEF => "VERDEF",
868 elf.SHT_GNU_VERNEED => "VERNEED",
869 elf.SHT_GNU_VERSYM => "VERSYM",
870 else => "UNKNOWN",
871 };
872 try writer.writeAll(name);
873 }
874 }
875
876 fn dumpPhdrs(ctx: Context, writer: anytype) !void {
877 if (ctx.phdrs.len == 0) return;
878
879 for (ctx.phdrs, 0..) |phdr, phndx| {
880 try writer.print("phdr {d}\n", .{phndx});
881 try writer.print("type {s}\n", .{fmtPhType(phdr.p_type)});
882 try writer.print("vaddr {x}\n", .{phdr.p_vaddr});
883 try writer.print("paddr {x}\n", .{phdr.p_paddr});
884 try writer.print("offset {x}\n", .{phdr.p_offset});
885 try writer.print("memsz {x}\n", .{phdr.p_memsz});
886 try writer.print("filesz {x}\n", .{phdr.p_filesz});
887 try writer.print("align {x}\n", .{phdr.p_align});
888 // TODO dump formatted p_flags
889 }
890 }
891
892 fn fmtPhType(ph_type: u32) std.fmt.Formatter(formatPhType) {
893 return .{ .data = ph_type };
894 }
895
896 fn formatPhType(
897 ph_type: u32,
898 comptime unused_fmt_string: []const u8,
899 options: std.fmt.FormatOptions,
900 writer: anytype,
901 ) !void {
902 _ = unused_fmt_string;
903 _ = options;
904 if (elf.PT_LOOS <= ph_type and ph_type < elf.PT_HIOS) {
905 try writer.print("LOOS+0x{x}", .{ph_type - elf.PT_LOOS});
906 } else if (elf.PT_LOPROC <= ph_type and ph_type < elf.PT_HIPROC) {
907 try writer.print("LOPROC+0x{x}", .{ph_type - elf.PT_LOPROC});
908 } else {
909 const p_type = switch (ph_type) {
910 elf.PT_NULL => "NULL",
911 elf.PT_LOAD => "LOAD",
912 elf.PT_DYNAMIC => "DYNAMIC",
913 elf.PT_INTERP => "INTERP",
914 elf.PT_NOTE => "NOTE",
915 elf.PT_SHLIB => "SHLIB",
916 elf.PT_PHDR => "PHDR",
917 elf.PT_TLS => "TLS",
918 elf.PT_NUM => "NUM",
919 elf.PT_GNU_EH_FRAME => "GNU_EH_FRAME",
920 elf.PT_GNU_STACK => "GNU_STACK",
921 elf.PT_GNU_RELRO => "GNU_RELRO",
922 else => "UNKNOWN",
923 };
924 try writer.writeAll(p_type);
925 }
863926 }
864927};
865928