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elf+aarch64: handle TLS GD model

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This commit is contained in:
Jakub Konka
2024-03-08 14:46:23 +01:00
parent b343103567
commit 47100bd40a
1 changed files with 24 additions and 1 deletions
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25
src/link/Elf/Atom.zig
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@@ -1634,9 +1634,16 @@ const aarch64 = struct {
symbol.flags.needs_gottp = true;
},
.TLSGD_ADR_PAGE21,
.TLSGD_ADD_LO12_NC,
=> {
symbol.flags.needs_tlsgd = true;
},
.TLSDESC_ADR_PAGE21,
.TLSDESC_LD64_LO12,
.TLSDESC_ADD_LO12,
.TLSDESC_CALL,
=> {
const should_relax = elf_file.base.isStatic() or (!is_dyn_lib and !symbol.flags.import);
if (!should_relax) {
@@ -1651,7 +1658,6 @@ const aarch64 = struct {
.LDST32_ABS_LO12_NC,
.LDST64_ABS_LO12_NC,
.LDST128_ABS_LO12_NC,
.TLSDESC_CALL,
=> {},
else => try atom.reportUnhandledRelocError(rel, elf_file),
@@ -1792,6 +1798,23 @@ const aarch64 = struct {
aarch64_util.writeLoadStoreRegInst(offset, code);
},
.TLSGD_ADR_PAGE21 => {
const S_: i64 = @intCast(target.tlsGdAddress(elf_file));
const saddr: u64 = @intCast(P);
const taddr: u64 = @intCast(S_ + A);
relocs_log.debug(" [{x} => {x}]", .{ P, taddr });
const pages: u21 = @bitCast(try aarch64_util.calcNumberOfPages(saddr, taddr));
aarch64_util.writeAdrpInst(pages, code);
},
.TLSGD_ADD_LO12_NC => {
const S_: i64 = @intCast(target.tlsGdAddress(elf_file));
const taddr: u64 = @intCast(S_ + A);
relocs_log.debug(" [{x} => {x}]", .{ P, taddr });
const offset: u12 = @truncate(taddr);
aarch64_util.writeAddImmInst(offset, code);
},
.TLSDESC_ADR_PAGE21 => {
if (target.flags.has_tlsdesc) {
const S_: i64 = @intCast(target.tlsDescAddress(elf_file));