machinst x64: New backend unwind (#2266)

Addresses unwind for experimental x64 backend. The preliminary code enables backtrace on SystemV call convension.
2020-10-23 15:19:41 -05:00
parent 2702942050
commit de4af90af6
25 changed files with 554 additions and 29 deletions
--- a/cranelift/codegen/src/machinst/adapter.rs
+++ b/cranelift/codegen/src/machinst/adapter.rs
@@ -129,6 +129,11 @@ impl TargetIsa for TargetIsaAdapter {
        self.backend.unsigned_sub_overflow_condition()
    }

+    #[cfg(feature = "unwind")]
+    fn create_systemv_cie(&self) -> Option<gimli::write::CommonInformationEntry> {
+        self.backend.create_systemv_cie()
+    }
+
    fn as_any(&self) -> &dyn Any {
        self as &dyn Any
    }