[src/trunk]: src/lib/libc/arch/alpha/sys CFI: Saved RA needs to point to the ...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4998081c45b0
branches:  trunk
changeset: 991015:4998081c45b0
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Nov 03 04:52:51 2021 +0000

description:
CFI: Saved RA needs to point to the PC slot in the ucontext_t.

diffstat:

 lib/libc/arch/alpha/sys/__sigtramp2.S |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r ea507c0ea59c -r 4998081c45b0 lib/libc/arch/alpha/sys/__sigtramp2.S
--- a/lib/libc/arch/alpha/sys/__sigtramp2.S     Wed Nov 03 03:58:31 2021 +0000
+++ b/lib/libc/arch/alpha/sys/__sigtramp2.S     Wed Nov 03 04:52:51 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: __sigtramp2.S,v 1.6 2021/11/03 03:58:31 thorpej Exp $  */
+/*     $NetBSD: __sigtramp2.S,v 1.7 2021/11/03 04:52:51 thorpej Exp $  */
 
 /*
  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@@ -40,7 +40,8 @@
  *     sp->    siginfo structure       [0]
  */
 
-#define        CFI_OFFSET(r)   .cfi_offset r, r*8
+#define        CFI_OFFSET_REG(n, r)    .cfi_offset n, r*8
+#define        CFI_OFFSET(r)           CFI_OFFSET_REG(r, r)
 
        .cfi_startproc simple
        .cfi_signal_frame
@@ -71,7 +72,7 @@
        CFI_OFFSET(_REG_T9)
        CFI_OFFSET(_REG_T10)
        CFI_OFFSET(_REG_T11)
-       CFI_OFFSET(_REG_RA)
+       CFI_OFFSET_REG(_REG_RA, _REG_PC)
        CFI_OFFSET(_REG_T12)    /* a.k.a. _REG_PV */
        CFI_OFFSET(_REG_AT)
        CFI_OFFSET(_REG_GP)