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elf+aarch64: resolve .eh_frame relocs

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This commit is contained in:
Jakub Konka 2024-02-21 22:28:02 +01:00
parent 7aeba3a3d1
commit 7fd4576596
1 changed files with 14 additions and 0 deletions
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14
src/link/Elf/eh_frame.zig
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@ -318,6 +318,7 @@ fn resolveReloc(rec: anytype, sym: *const Symbol, rel: elf.Elf64_Rela, elf_file:
switch (cpu_arch) {
.x86_64 => try x86_64.resolveReloc(rec, elf_file, rel, P, S + A, contents[offset..]),
.aarch64 => try aarch64.resolveReloc(rec, elf_file, rel, P, S + A, contents[offset..]),
else => return error.UnsupportedCpuArch,
}
}
@ -563,6 +564,19 @@ const x86_64 = struct {
}
};
const aarch64 = struct {
fn resolveReloc(rec: anytype, elf_file: *Elf, rel: elf.Elf64_Rela, source: i64, target: i64, data: []u8) !void {
const r_type: elf.R_AARCH64 = @enumFromInt(rel.r_type());
switch (r_type) {
.NONE => {},
.ABS64 => std.mem.writeInt(i64, data[0..8], target, .little),
.PREL32 => std.mem.writeInt(i32, data[0..4], @as(i32, @intCast(target - source)), .little),
.PREL64 => std.mem.writeInt(i64, data[0..8], target - source, .little),
else => try reportInvalidReloc(rec, elf_file, rel),
}
}
};
fn reportInvalidReloc(rec: anytype, elf_file: *Elf, rel: elf.Elf64_Rela) !void {
var err = try elf_file.addErrorWithNotes(1);
try err.addMsg(elf_file, "invalid relocation type {} at offset 0x{x}", .{