Sources Bugzilla – Attachment #6234: x86 entry_64.S cfi fixup for bug #13714
/* Restore saved previous stack */
popq %rsi
CFI_DEF_CFA_REGISTER rsi
CFI_DEF_CFA rsi,0 /* needed after def_cfa_expression */
leaq ARGOFFSET-RBP(%rsi), %rsp
CFI_DEF_CFA_REGISTER rsp
CFI_ADJUST_CFA_OFFSET RBP-ARGOFFSET