Implement Mach-O TLS access for x64 newBE

2021-01-21 18:05:37 +01:00
parent 207f60a18e
commit 81d248c057
4 changed files with 43 additions and 2 deletions
--- a/cranelift/codegen/src/isa/x64/inst/emit.rs
+++ b/cranelift/codegen/src/isa/x64/inst/emit.rs
@@ -3016,6 +3016,19 @@ pub(crate) fn emit(
            );
            sink.put4(0); // offset
        }
+
+        Inst::MachOTlsGetAddr { ref symbol } => {
+            // movq gv@tlv(%rip), %rdi
+            sink.put1(0x48); // REX.w
+            sink.put1(0x8b); // MOV
+            sink.put1(0x3d); // ModRM byte
+            emit_reloc(sink, state, Reloc::MachOX86_64Tlv, symbol, -4);
+            sink.put4(0); // offset
+
+            // callq *(%rdi)
+            sink.put1(0xff);
+            sink.put1(0x17);
+        }
    }

    state.clear_post_insn();