mirror of
https://github.com/ziglang/zig.git
synced 2026-01-20 14:25:16 +00:00
check-object: dump contents of .dynamic section
This commit is contained in:
Jakub Konka
parent
17255bed41
commit
5839054e85
@ -712,8 +712,7 @@ const ElfDumper = struct {
|
||||
|
||||
fn getName(st: Symtab, index: usize) ?[]const u8 {
|
||||
const sym = st.get(index) orelse return null;
|
||||
assert(sym.st_name < st.strings.len);
|
||||
return mem.sliceTo(@ptrCast(st.strings.ptr + sym.st_name), 0);
|
||||
return getString(st.strings, sym.st_name);
|
||||
}
|
||||
};
|
||||
|
||||
@ -786,6 +785,7 @@ const ElfDumper = struct {
|
||||
try dumpHeader(ctx, writer);
|
||||
try dumpShdrs(ctx, writer);
|
||||
try dumpPhdrs(ctx, writer);
|
||||
try dumpDynamic(ctx, writer);
|
||||
|
||||
return output.toOwnedSlice();
|
||||
}
|
||||
@ -803,6 +803,17 @@ const ElfDumper = struct {
|
||||
return ctx.data[shdr.sh_offset..][0..shdr.sh_size];
|
||||
}
|
||||
|
||||
fn getSectionByName(ctx: Context, name: []const u8) ?usize {
|
||||
for (0..ctx.shdrs.len) |shndx| {
|
||||
if (mem.eql(u8, getSectionName(ctx, shndx), name)) return shndx;
|
||||
} else return null;
|
||||
}
|
||||
|
||||
fn getString(strtab: []const u8, off: u32) []const u8 {
|
||||
assert(off < strtab.len);
|
||||
return mem.sliceTo(@as([*:0]const u8, @ptrCast(strtab.ptr + off)), 0);
|
||||
}
|
||||
|
||||
fn dumpHeader(ctx: Context, writer: anytype) !void {
|
||||
try writer.writeAll("header\n");
|
||||
try writer.print("type {s}\n", .{@tagName(ctx.hdr.e_type)});
|
||||
@ -824,6 +835,143 @@ const ElfDumper = struct {
|
||||
}
|
||||
}
|
||||
|
||||
fn dumpDynamic(ctx: Context, writer: anytype) !void {
|
||||
const shndx = getSectionByName(ctx, ".dynamic") orelse return;
|
||||
const shdr = ctx.shdrs[shndx];
|
||||
const strtab = getSectionContents(ctx, shdr.sh_link);
|
||||
const data = getSectionContents(ctx, shndx);
|
||||
const nentries = @divExact(data.len, @sizeOf(elf.Elf64_Dyn));
|
||||
const entries = @as([*]align(1) const elf.Elf64_Dyn, @ptrCast(data.ptr))[0..nentries];
|
||||
|
||||
for (entries) |entry| {
|
||||
const key = @as(u64, @bitCast(entry.d_tag));
|
||||
const value = entry.d_val;
|
||||
|
||||
const key_str = switch (key) {
|
||||
elf.DT_NEEDED => "NEEDED",
|
||||
elf.DT_SONAME => "SONAME",
|
||||
elf.DT_INIT_ARRAY => "INIT_ARRAY",
|
||||
elf.DT_INIT_ARRAYSZ => "INIT_ARRAYSZ",
|
||||
elf.DT_FINI_ARRAY => "FINI_ARRAY",
|
||||
elf.DT_FINI_ARRAYSZ => "FINI_ARRAYSZ",
|
||||
elf.DT_HASH => "HASH",
|
||||
elf.DT_GNU_HASH => "GNU_HASH",
|
||||
elf.DT_STRTAB => "STRTAB",
|
||||
elf.DT_SYMTAB => "SYMTAB",
|
||||
elf.DT_STRSZ => "STRSZ",
|
||||
elf.DT_SYMENT => "SYMENT",
|
||||
elf.DT_PLTGOT => "PLTGOT",
|
||||
elf.DT_PLTRELSZ => "PLTRELSZ",
|
||||
elf.DT_PLTREL => "PLTREL",
|
||||
elf.DT_JMPREL => "JMPREL",
|
||||
elf.DT_RELA => "RELA",
|
||||
elf.DT_RELASZ => "RELASZ",
|
||||
elf.DT_RELAENT => "RELAENT",
|
||||
elf.DT_VERDEF => "VERDEF",
|
||||
elf.DT_VERDEFNUM => "VERDEFNUM",
|
||||
elf.DT_FLAGS => "FLAGS",
|
||||
elf.DT_FLAGS_1 => "FLAGS_1",
|
||||
elf.DT_VERNEED => "VERNEED",
|
||||
elf.DT_VERNEEDNUM => "VERNEEDNUM",
|
||||
elf.DT_VERSYM => "VERSYM",
|
||||
elf.DT_RELACOUNT => "RELACOUNT",
|
||||
elf.DT_RPATH => "RPATH",
|
||||
elf.DT_RUNPATH => "RUNPATH",
|
||||
elf.DT_INIT => "INIT",
|
||||
elf.DT_FINI => "FINI",
|
||||
elf.DT_NULL => "NULL",
|
||||
else => "UNKNOWN",
|
||||
};
|
||||
try writer.print("{s}", .{key_str});
|
||||
|
||||
switch (key) {
|
||||
elf.DT_NEEDED,
|
||||
elf.DT_SONAME,
|
||||
elf.DT_RPATH,
|
||||
elf.DT_RUNPATH,
|
||||
=> {
|
||||
const name = getString(strtab, @intCast(value));
|
||||
try writer.print(" {s}", .{name});
|
||||
},
|
||||
|
||||
elf.DT_INIT_ARRAY,
|
||||
elf.DT_FINI_ARRAY,
|
||||
elf.DT_HASH,
|
||||
elf.DT_GNU_HASH,
|
||||
elf.DT_STRTAB,
|
||||
elf.DT_SYMTAB,
|
||||
elf.DT_PLTGOT,
|
||||
elf.DT_JMPREL,
|
||||
elf.DT_RELA,
|
||||
elf.DT_VERDEF,
|
||||
elf.DT_VERNEED,
|
||||
elf.DT_VERSYM,
|
||||
elf.DT_INIT,
|
||||
elf.DT_FINI,
|
||||
elf.DT_NULL,
|
||||
=> try writer.print(" {x}", .{value}),
|
||||
|
||||
elf.DT_INIT_ARRAYSZ,
|
||||
elf.DT_FINI_ARRAYSZ,
|
||||
elf.DT_STRSZ,
|
||||
elf.DT_SYMENT,
|
||||
elf.DT_PLTRELSZ,
|
||||
elf.DT_RELASZ,
|
||||
elf.DT_RELAENT,
|
||||
elf.DT_RELACOUNT,
|
||||
=> try writer.print(" {d}", .{value}),
|
||||
|
||||
elf.DT_PLTREL => try writer.writeAll(switch (value) {
|
||||
elf.DT_REL => " REL",
|
||||
elf.DT_RELA => " RELA",
|
||||
else => " UNKNOWN",
|
||||
}),
|
||||
|
||||
elf.DT_FLAGS => if (value > 0) {
|
||||
if (value & elf.DF_ORIGIN != 0) try writer.writeAll(" ORIGIN");
|
||||
if (value & elf.DF_SYMBOLIC != 0) try writer.writeAll(" SYMBOLIC");
|
||||
if (value & elf.DF_TEXTREL != 0) try writer.writeAll(" TEXTREL");
|
||||
if (value & elf.DF_BIND_NOW != 0) try writer.writeAll(" BIND_NOW");
|
||||
if (value & elf.DF_STATIC_TLS != 0) try writer.writeAll(" STATIC_TLS");
|
||||
},
|
||||
|
||||
elf.DT_FLAGS_1 => if (value > 0) {
|
||||
if (value & elf.DF_1_NOW != 0) try writer.writeAll(" NOW");
|
||||
if (value & elf.DF_1_GLOBAL != 0) try writer.writeAll(" GLOBAL");
|
||||
if (value & elf.DF_1_GROUP != 0) try writer.writeAll(" GROUP");
|
||||
if (value & elf.DF_1_NODELETE != 0) try writer.writeAll(" NODELETE");
|
||||
if (value & elf.DF_1_LOADFLTR != 0) try writer.writeAll(" LOADFLTR");
|
||||
if (value & elf.DF_1_INITFIRST != 0) try writer.writeAll(" INITFIRST");
|
||||
if (value & elf.DF_1_NOOPEN != 0) try writer.writeAll(" NOOPEN");
|
||||
if (value & elf.DF_1_ORIGIN != 0) try writer.writeAll(" ORIGIN");
|
||||
if (value & elf.DF_1_DIRECT != 0) try writer.writeAll(" DIRECT");
|
||||
if (value & elf.DF_1_TRANS != 0) try writer.writeAll(" TRANS");
|
||||
if (value & elf.DF_1_INTERPOSE != 0) try writer.writeAll(" INTERPOSE");
|
||||
if (value & elf.DF_1_NODEFLIB != 0) try writer.writeAll(" NODEFLIB");
|
||||
if (value & elf.DF_1_NODUMP != 0) try writer.writeAll(" NODUMP");
|
||||
if (value & elf.DF_1_CONFALT != 0) try writer.writeAll(" CONFALT");
|
||||
if (value & elf.DF_1_ENDFILTEE != 0) try writer.writeAll(" ENDFILTEE");
|
||||
if (value & elf.DF_1_DISPRELDNE != 0) try writer.writeAll(" DISPRELDNE");
|
||||
if (value & elf.DF_1_DISPRELPND != 0) try writer.writeAll(" DISPRELPND");
|
||||
if (value & elf.DF_1_NODIRECT != 0) try writer.writeAll(" NODIRECT");
|
||||
if (value & elf.DF_1_IGNMULDEF != 0) try writer.writeAll(" IGNMULDEF");
|
||||
if (value & elf.DF_1_NOKSYMS != 0) try writer.writeAll(" NOKSYMS");
|
||||
if (value & elf.DF_1_NOHDR != 0) try writer.writeAll(" NOHDR");
|
||||
if (value & elf.DF_1_EDITED != 0) try writer.writeAll(" EDITED");
|
||||
if (value & elf.DF_1_NORELOC != 0) try writer.writeAll(" NORELOC");
|
||||
if (value & elf.DF_1_SYMINTPOSE != 0) try writer.writeAll(" SYMINTPOSE");
|
||||
if (value & elf.DF_1_GLOBAUDIT != 0) try writer.writeAll(" GLOBAUDIT");
|
||||
if (value & elf.DF_1_SINGLETON != 0) try writer.writeAll(" SINGLETON");
|
||||
if (value & elf.DF_1_STUB != 0) try writer.writeAll(" STUB");
|
||||
if (value & elf.DF_1_PIE != 0) try writer.writeAll(" PIE");
|
||||
},
|
||||
|
||||
else => try writer.print(" {x}", .{value}),
|
||||
}
|
||||
try writer.writeByte('\n');
|
||||
}
|
||||
}
|
||||
|
||||
fn fmtShType(sh_type: u32) std.fmt.Formatter(formatShType) {
|
||||
return .{ .data = sh_type };
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user