Module Name: src
Committed By: maxv
Date: Fri Feb 23 09:00:56 UTC 2018
Modified Files:
src/sys/arch/amd64/conf: Makefile.amd64
src/sys/arch/i386/conf: Makefile.i386
Log Message:
Add -fno-shrink-wrap, to force GCC to push the frames at the very beginning
of the functions. Otherwise DDB is unable to display a correct stack trace
if a fault occurred in a function before the frame was pushed.
Discussed on tech-kern@, flag suggested by Krister Walfridsson. Should fix
PR/52560.
To generate a diff of this commit:
cvs rdiff -u -r1.64 -r1.65 src/sys/arch/amd64/conf/Makefile.amd64
cvs rdiff -u -r1.187 -r1.188 src/sys/arch/i386/conf/Makefile.i386
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/amd64/conf/Makefile.amd64
diff -u src/sys/arch/amd64/conf/Makefile.amd64:1.64 src/sys/arch/amd64/conf/Makefile.amd64:1.65
--- src/sys/arch/amd64/conf/Makefile.amd64:1.64 Wed Nov 15 18:02:37 2017
+++ src/sys/arch/amd64/conf/Makefile.amd64 Fri Feb 23 09:00:56 2018
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.amd64,v 1.64 2017/11/15 18:02:37 maxv Exp $
+# $NetBSD: Makefile.amd64,v 1.65 2018/02/23 09:00:56 maxv Exp $
# Makefile for NetBSD
#
@@ -35,7 +35,7 @@ GENASSYM_CONF= ${AMD64}/amd64/genassym.c
##
DEFCOPTS= -O2 -fno-omit-frame-pointer
CPPFLAGS+= -Damd64 -Dx86_64
-CFLAGS+= -mcmodel=kernel
+CFLAGS+= -mcmodel=kernel -fno-shrink-wrap
# -mno-sse implies -mno-sse2 (etc), explicitly disable avx to be extra sure
CFLAGS+= -mno-red-zone -mno-mmx -mno-sse -mno-avx
# make absolutely sure we don't get x87 registers used as well
Index: src/sys/arch/i386/conf/Makefile.i386
diff -u src/sys/arch/i386/conf/Makefile.i386:1.187 src/sys/arch/i386/conf/Makefile.i386:1.188
--- src/sys/arch/i386/conf/Makefile.i386:1.187 Sun Dec 10 14:29:47 2017
+++ src/sys/arch/i386/conf/Makefile.i386 Fri Feb 23 09:00:55 2018
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.i386,v 1.187 2017/12/10 14:29:47 christos Exp $
+# $NetBSD: Makefile.i386,v 1.188 2018/02/23 09:00:55 maxv Exp $
# Makefile for NetBSD
#
@@ -35,7 +35,7 @@ GENASSYM_CONF= ${I386}/i386/genassym.cf
##
DEFCOPTS= -O2 -fno-omit-frame-pointer
CPPFLAGS+= -Di386
-CFLAGS+= -msoft-float
+CFLAGS+= -msoft-float -fno-shrink-wrap
## no-sse implies no-sse2 but not no-avx
CFLAGS+= -mno-mmx -mno-sse -mno-avx
