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 {...@@ -785,6 +785,7 @@ const ElfDumper = struct {
785785
786 try dumpHeader(ctx, writer);786 try dumpHeader(ctx, writer);
787 try dumpShdrs(ctx, writer);787 try dumpShdrs(ctx, writer);
788 try dumpPhdrs(ctx, writer);
788789
789 return output.toOwnedSlice();790 return output.toOwnedSlice();
790 }791 }
...@@ -814,52 +815,114 @@ const ElfDumper = struct {...@@ -814,52 +815,114 @@ const ElfDumper = struct {
814 for (ctx.shdrs, 0..) |shdr, shndx| {815 for (ctx.shdrs, 0..) |shdr, shndx| {
815 try writer.print("shdr {d}\n", .{shndx});816 try writer.print("shdr {d}\n", .{shndx});
816 try writer.print("name {s}\n", .{getSectionName(ctx, shndx)});817 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)});
818 try writer.print("addr {x}\n", .{shdr.sh_addr});819 try writer.print("addr {x}\n", .{shdr.sh_addr});
819 try writer.print("offset {x}\n", .{shdr.sh_offset});820 try writer.print("offset {x}\n", .{shdr.sh_offset});
820 try writer.print("size {x}\n", .{shdr.sh_size});821 try writer.print("size {x}\n", .{shdr.sh_size});
821 try writer.print("addralign {x}\n", .{shdr.sh_addralign});822 try writer.print("addralign {x}\n", .{shdr.sh_addralign});
823 // TODO dump formatted sh_flags
822 }824 }
823 }825 }
824826
825 fn fmtShType(gpa: Allocator, sh_type: u32) ![]const u8 {827 fn fmtShType(sh_type: u32) std.fmt.Formatter(formatShType) {
826 return switch (sh_type) {828 return .{ .data = sh_type };
827 elf.SHT_NULL => "NULL",829 }
828 elf.SHT_PROGBITS => "PROGBITS",830
829 elf.SHT_SYMTAB => "SYMTAB",831 fn formatShType(
830 elf.SHT_STRTAB => "STRTAB",832 sh_type: u32,
831 elf.SHT_RELA => "RELA",833 comptime unused_fmt_string: []const u8,
832 elf.SHT_HASH => "HASH",834 options: std.fmt.FormatOptions,
833 elf.SHT_DYNAMIC => "DYNAMIC",835 writer: anytype,
834 elf.SHT_NOTE => "NOTE",836 ) !void {
835 elf.SHT_NOBITS => "NOBITS",837 _ = unused_fmt_string;
836 elf.SHT_REL => "REL",838 _ = options;
837 elf.SHT_SHLIB => "SHLIB",839 if (elf.SHT_LOOS <= sh_type and sh_type < elf.SHT_HIOS) {
838 elf.SHT_DYNSYM => "DYNSYM",840 try writer.print("LOOS+0x{x}", .{sh_type - elf.SHT_LOOS});
839 elf.SHT_INIT_ARRAY => "INIT_ARRAY",841 } else if (elf.SHT_LOPROC <= sh_type and sh_type < elf.SHT_HIPROC) {
840 elf.SHT_FINI_ARRAY => "FINI_ARRAY",842 try writer.print("LOPROC+0x{x}", .{sh_type - elf.SHT_LOPROC});
841 elf.SHT_PREINIT_ARRAY => "PREINIT_ARRAY",843 } else if (elf.SHT_LOUSER <= sh_type and sh_type < elf.SHT_HIUSER) {
842 elf.SHT_GROUP => "GROUP",844 try writer.print("LOUSER+0x{x}", .{sh_type - elf.SHT_LOUSER});
843 elf.SHT_SYMTAB_SHNDX => "SYMTAB_SHNDX",845 } else {
844 elf.SHT_X86_64_UNWIND => "X86_64_UNWIND",846 const name = switch (sh_type) {
845 elf.SHT_LLVM_ADDRSIG => "LLVM_ADDRSIG",847 elf.SHT_NULL => "NULL",
846 elf.SHT_GNU_HASH => "GNU_HASH",848 elf.SHT_PROGBITS => "PROGBITS",
847 elf.SHT_GNU_VERDEF => "VERDEF",849 elf.SHT_SYMTAB => "SYMTAB",
848 elf.SHT_GNU_VERNEED => "VERNEED",850 elf.SHT_STRTAB => "STRTAB",
849 elf.SHT_GNU_VERSYM => "VERSYM",851 elf.SHT_RELA => "RELA",
850 else => |sht| blk: {852 elf.SHT_HASH => "HASH",
851 if (elf.SHT_LOOS <= sht and sht < elf.SHT_HIOS) {853 elf.SHT_DYNAMIC => "DYNAMIC",
852 break :blk try std.fmt.allocPrint(gpa, "LOOS+0x{x}", .{sht - elf.SHT_LOOS});854 elf.SHT_NOTE => "NOTE",
853 }855 elf.SHT_NOBITS => "NOBITS",
854 if (elf.SHT_LOPROC <= sht and sht < elf.SHT_HIPROC) {856 elf.SHT_REL => "REL",
855 break :blk try std.fmt.allocPrint(gpa, "LOPROC+0x{x}", .{sht - elf.SHT_LOPROC});857 elf.SHT_SHLIB => "SHLIB",
856 }858 elf.SHT_DYNSYM => "DYNSYM",
857 if (elf.SHT_LOUSER <= sht and sht < elf.SHT_HIUSER) {859 elf.SHT_INIT_ARRAY => "INIT_ARRAY",
858 break :blk try std.fmt.allocPrint(gpa, "LOUSER+0x{x}", .{sht - elf.SHT_LOUSER});860 elf.SHT_FINI_ARRAY => "FINI_ARRAY",
859 }861 elf.SHT_PREINIT_ARRAY => "PREINIT_ARRAY",
860 break :blk "UNKNOWN";862 elf.SHT_GROUP => "GROUP",
861 },863 elf.SHT_SYMTAB_SHNDX => "SYMTAB_SHNDX",
862 };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 }
863 }926 }
864};927};
865928