From dd551f4e8d727ddf245c166f0788f950ce7d04c8 Mon Sep 17 00:00:00 2001
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Mon, 1 May 2006 12:16:04 -0700
Subject: [PATCH] --- yaml --- r: 26405 b: refs/heads/master c:
 275e6e1ee2bafde77e9390b27e876fa83f24cb60 h: refs/heads/master i:   26403:
 2408820115b1f7529c6909c6a2bc3d35525a5141 v: v3

---
 [refs]                             | 2 +-
 trunk/arch/um/Makefile             | 6 +++++-
 trunk/arch/um/kernel/skas/Makefile | 9 ++++++++-
 trunk/arch/um/sys-i386/Makefile    | 2 ++
 trunk/arch/um/sys-x86_64/Makefile  | 2 ++
 5 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 3d71f814fb1a..0201c99a883a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cb8aa3d29b562e4c16fdfa4ecc8170ddc55397f4
+refs/heads/master: 275e6e1ee2bafde77e9390b27e876fa83f24cb60
diff --git a/trunk/arch/um/Makefile b/trunk/arch/um/Makefile
index 930e00612a22..bed604af6c6f 100644
--- a/trunk/arch/um/Makefile
+++ b/trunk/arch/um/Makefile
@@ -118,6 +118,10 @@ prepare: $(ARCH_DIR)/include/kern_constants.h
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
 
+CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
+	$(call cc-option, -fno-stack-protector,) \
+	$(call cc-option, -fno-stack-protector-all,)
+
 CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
 CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
@@ -227,4 +231,4 @@ $(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
 	@echo '  SYMLINK $@'
 	$(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@
 
-export SUBARCH USER_CFLAGS OS
+export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS
diff --git a/trunk/arch/um/kernel/skas/Makefile b/trunk/arch/um/kernel/skas/Makefile
index 57181a920d48..ad842964707a 100644
--- a/trunk/arch/um/kernel/skas/Makefile
+++ b/trunk/arch/um/kernel/skas/Makefile
@@ -11,4 +11,11 @@ USER_OBJS := clone.o
 include arch/um/scripts/Makefile.rules
 
 # clone.o is in the stub, so it can't be built with profiling
-$(obj)/clone.o : c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS))
+# GCC hardened also auto-enables -fpic, but we need %ebx so it can't work ->
+# disable it
+
+CFLAGS_clone.o := $(CFLAGS_NO_HARDENING)
+
+# since we're setting c_flags we _must_ add $(CFLAGS_$(*F).o).
+
+$(obj)/clone.o : c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS)) $(CFLAGS_$(*F).o)
diff --git a/trunk/arch/um/sys-i386/Makefile b/trunk/arch/um/sys-i386/Makefile
index 82121ab03bb0..3734c3eb15a4 100644
--- a/trunk/arch/um/sys-i386/Makefile
+++ b/trunk/arch/um/sys-i386/Makefile
@@ -13,6 +13,8 @@ USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o stub_segv.o
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
+CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
+
 extra-$(CONFIG_MODE_TT) += unmap.o
 
 include arch/um/scripts/Makefile.rules
diff --git a/trunk/arch/um/sys-x86_64/Makefile b/trunk/arch/um/sys-x86_64/Makefile
index f739bea35195..6d3b29c74533 100644
--- a/trunk/arch/um/sys-x86_64/Makefile
+++ b/trunk/arch/um/sys-x86_64/Makefile
@@ -21,6 +21,8 @@ USER_OBJS := ptrace_user.o sigcontext.o stub_segv.o
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
+CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
+
 extra-$(CONFIG_MODE_TT) += unmap.o
 
 include arch/um/scripts/Makefile.rules