wip

XrXr · Oct 11, 2023 · ae291be · ae291be
1 parent 8a8b23c
commit ae291be
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/yjit/src/backend/x86_64/mod.rs b/yjit/src/backend/x86_64/mod.rs
@@ -498,8 +498,17 @@ impl Assembler
                     cb.write_byte(0);
                 },
 
-                Insn::FrameSetup => {},
-                Insn::FrameTeardown => {},
+                // Set up RBP to work with frame pointer unwinding
+                // (e.g. with Linux `perf record --call-graph fp`)
+                Insn::FrameSetup => {
+                    push(cb, RBP);
+                    mov(cb, RBP, RSP);
+                    push(cb, RBP);
+                }
+                Insn::FrameTeardown => {
+                    pop(cb, RBP);
+                    pop(cb, RBP);
+                }
 
                 Insn::Add { left, right, .. } => {
                     let opnd1 = emit_64bit_immediate(cb, right);