From 0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 26 Aug 2016 08:57:42 -0700 Subject: X86-64: Correct CFA in _dl_runtime_resolve When stack is re-aligned in _dl_runtime_resolve, there is no need to adjust CFA when allocating register save area on stack. * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Don't adjust CFA when allocating register save area on re-aligned stack. --- ChangeLog | 6 ++++++ sysdeps/x86_64/dl-trampoline.h | 2 ++ 2 files changed, 8 insertions(+) diff --git a/ChangeLog b/ChangeLog index 4324678..a8aae15 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2016-08-26 H.J. Lu + + * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Don't + adjust CFA when allocating register save area on re-aligned + stack. + 2016-08-26 Florian Weimer * string/tst-cmp.c: New test. diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h index b90836a..8161f96 100644 --- a/sysdeps/x86_64/dl-trampoline.h +++ b/sysdeps/x86_64/dl-trampoline.h @@ -69,7 +69,9 @@ _dl_runtime_resolve: and $-VEC_SIZE, %RSP_LP #endif sub $REGISTER_SAVE_AREA, %RSP_LP +#if !DL_RUNTIME_RESOLVE_REALIGN_STACK cfi_adjust_cfa_offset(REGISTER_SAVE_AREA) +#endif # Preserve registers otherwise clobbered. movq %rax, REGISTER_SAVE_RAX(%rsp) movq %rcx, REGISTER_SAVE_RCX(%rsp) -- cgit v1.1