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2011-12-06 Magnus Granberg <zorry@gentoo.org> Anthony G. Basile <basile@opensource.dyc.edu>
* Makefile.in We add -fno-stack-protector to BOOT_CFLAGS, LIBCFLAGS and LIBCXXFLAGS if enable_esp yes.
* gcc/Makefile.in Add -fno-PIE and -fno-stack-protector.
Libgcc2 doesn't compile with -fstack-protector.
Crtstuff doesn't compile with -fPIE and -fstack-protector.
$(out_object_file): ix86_split_to_parts() stack smashing attack b.g.o #149292.
Add crtbeginÅ.o to EXTRA_PARTS if enable_crtbeginP yes
We add new file crtbeginP.o if enable_crtbeginP yes
* libgcc/Makefile.in Add crtbeginP.o to EXTRA_PARTS if enable_crtbeginP yes
We add new file crtbeginP.o if enable_crtbeginP yes
2010-04-25 Magnus Granberg <zorry@gentoo.org>, Kees Cook <kees@outflux.net>
LP #344502
* libmudflap/Makefiles.in Add -fno-stack-protector -U_FORTIFY_SOURCE
to AM_CFLAGS ifdef enable_esp.
--- Makefile.in 2010-01-22 08:35:38.000000000 -0500
+++ Makefile.in 2010-02-07 15:10:59.000000000 -0500
@@ -350,9 +350,17 @@
BUILD_PREFIX = @BUILD_PREFIX@
BUILD_PREFIX_1 = @BUILD_PREFIX_1@
+# Some stuff don't compile with SSP
+enable_esp = @enable_esp@
+ifeq ($(enable_esp),yes)
+ESP_NOSSP_CFLAGS = -fno-stack-protector
+else
+ESP_NOSSP_CFLAGS=
+endif
+
# Flags to pass to stage2 and later makes. They are defined
# here so that they can be overridden by Makefile fragments.
-BOOT_CFLAGS= -g -O2
+BOOT_CFLAGS= -g -O2 $(ESP_NOSSP_CFLAGS)
BOOT_LDFLAGS=
BOOT_ADAFLAGS=-gnatpg -gnata
@@ -397,9 +405,9 @@
CFLAGS = @CFLAGS@
LDFLAGS = @LDFLAGS@
-LIBCFLAGS = $(CFLAGS)
+LIBCFLAGS = $(CFLAGS) $(ESP_NOSSP_CFLAGS)
CXXFLAGS = @CXXFLAGS@
-LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates
+LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates $(ESP_NOSSP_CFLAGS)
TFLAGS =
--- gcc/Makefile.in 2010-01-22 17:22:51.000000000 -0500
+++ gcc/Makefile.in 2010-02-07 15:15:13.000000000 -0500
@@ -629,13 +629,24 @@
INHIBIT_LIBC_CFLAGS = -Dinhibit_libc
endif
+# We don't want __stack_chk_fail in crt* and libgcc2.a.
+# We don't want to compile crtbegin, crtend and crtbeginT with -fPIE.
+enable_esp = @enable_esp@
+ifeq ($(enable_esp),yes)
+ESP_NOPIE_CFLAGS = -fno-PIE
+ESP_NOSSP_CFLAGS = -fno-stack-protector
+else
+ESP_NOPIE_CFLAGS=
+ESP_NOSSP_CFLAGS=
+endif
+
# Options to use when compiling libgcc2.a.
#
LIBGCC2_DEBUG_CFLAGS = -g
LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) $(TARGET_LIBGCC2_CFLAGS) \
$(LIBGCC2_DEBUG_CFLAGS) $(GTHREAD_FLAGS) \
-DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
- $(INHIBIT_LIBC_CFLAGS)
+ $(INHIBIT_LIBC_CFLAGS) $(ESP_NOSSP_CFLAGS)
# Additional options to use when compiling libgcc2.a.
# Some targets override this to -isystem include
@@ -648,7 +659,7 @@
CRTSTUFF_CFLAGS = -O2 $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline -fno-exceptions \
-fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-tree-vectorize \
- $(INHIBIT_LIBC_CFLAGS)
+ $(INHIBIT_LIBC_CFLAGS) $(ESP_NOSSP_CFLAGS)
# Additional sources to handle exceptions; overridden by targets as needed.
LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde.c \
@@ -678,6 +689,12 @@
# The rules for compiling them should be in the t-* file for the machine.
EXTRA_PARTS = @extra_parts@
+# We add crtbeginP.o to the EXTRA_PARTS list if enable_crtbeginP = yes
+enable_crtbeginP = @enable_crtbeginP@
+ifeq ($(enable_crtbeginP),yes)
+EXTRA_PARTS += crtbeginP.o
+endif
+
# List of extra object files that should be compiled and linked with
# compiler proper (cc1, cc1obj, cc1plus).
EXTRA_OBJS = @extra_objs@
@@ -1856,9 +1873,10 @@
echo LIBGCC_SYNC = '$(LIBGCC_SYNC)' >> tmp-libgcc.mvars
echo LIBGCC_SYNC_CFLAGS = '$(LIBGCC_SYNC_CFLAGS)' >> tmp-libgcc.mvars
echo CRTSTUFF_CFLAGS = '$(CRTSTUFF_CFLAGS)' >> tmp-libgcc.mvars
- echo CRTSTUFF_T_CFLAGS = '$(CRTSTUFF_T_CFLAGS)' >> tmp-libgcc.mvars
+ echo CRTSTUFF_T_CFLAGS = '$(CRTSTUFF_T_CFLAGS) $(ESP_NOPIE_CFLAGS)' >> tmp-libgcc.mvars
echo CRTSTUFF_T_CFLAGS_S = '$(CRTSTUFF_T_CFLAGS_S)' >> tmp-libgcc.mvars
echo TARGET_SYSTEM_ROOT = '$(TARGET_SYSTEM_ROOT)' >> tmp-libgcc.mvars
+ echo enable_crtbeginP = '$(enable_crtbeginP)' >> tmp-libgcc.mvars
mv tmp-libgcc.mvars libgcc.mvars
@@ -1892,12 +1910,14 @@
$(T)crtbegin.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+ $(ESP_NOPIE_CFLAGS) \
-c $(srcdir)/crtstuff.c -DCRT_BEGIN \
-o $(T)crtbegin$(objext)
$(T)crtend.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+ $(ESP_NOPIE_CFLAGS) \
-c $(srcdir)/crtstuff.c -DCRT_END \
-o $(T)crtend$(objext)
@@ -1918,9 +1938,19 @@
$(T)crtbeginT.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+ $(ESP_NOPIE_CFLAGS) \
-c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O \
-o $(T)crtbeginT$(objext)
+# This is a version of crtbegin for -static -fPIE links if esp is enable.
+ifeq ($(enable_crtbeginP),yes)
+$(T)crtbeginP.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
+ gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
+ $(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS_S) \
+ -c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O -DCRTSTUFFS_O \
+ -o $(T)crtbeginP$(objext)
+endif
+
# Compile the start modules crt0.o and mcrt0.o that are linked with
# every program
$(T)crt0.o: s-crt0 ; @true
--- libgcc/Makefile.in 2009-07-30 18:33:49.000000000 -0400
+++ libgcc/Makefile.in 2010-02-07 15:10:59.000000000 -0500
@@ -291,6 +291,12 @@
gen-hide-list = echo > \$@
endif
+# We add crtbeginP.o to the EXTRA_PARTS list if enable_crtbeginP = yes
+enable_libgcc_crtbeginP = $(enable_crtbeginP)
+ifeq ($(enable_libgcc_crtbeginP),yes)
+EXTRA_PARTS += crtbeginP.o
+endif
+
ifneq ($(EXTRA_PARTS),)
extra-parts = libgcc-extra-parts
INSTALL_PARTS = $(EXTRA_PARTS)
@@ -842,6 +848,13 @@
crtbeginT.o: $(gcc_srcdir)/crtstuff.c
$(crt_compile) $(CRTSTUFF_T_CFLAGS) \
-c $(gcc_srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O
+
+# This is a version of crtbegin for -static -fPIE links.
+ifeq ($(enable_libgcc_crtbeginP),yes)
+crtbeginP.o: $(gcc_srcdir)/crtstuff.c
+ $(crt_compile) $(CRTSTUFF_T_CFLAGS_S) \
+ -c $(gcc_srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O -DCRTSTUFFS_O
+endif
endif
# Build extra startfiles in the libgcc directory.
--- libmudflap/Makefile.in 2009-12-05 12:18:53.000000000 -0500
+++ libmudflap/Makefile.in 2010-02-07 15:10:59.000000000 -0500
@@ -253,9 +253,17 @@
MAINT_CHARSET = latin1
SUBDIRS = testsuite
+# Some stuff don't compile with SSP and FORTIFY_SOURCE
+enable_esp = @enable_esp@
+ifeq ($(enable_esp),yes)
+ NO_ESP_CFLAGS = -fno-stack-protector -U_FORTIFY_SOURCE
+else
+ NO_ESP_CFLAGS =
+endif
+
# May be used by various substitution variables.
gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER)
-AM_CFLAGS = -Wall $(SECTION_FLAGS)
+AM_CFLAGS = -Wall $(SECTION_FLAGS) $(NO_ESP_CFLAGS)
@LIBMUDFLAPTH_FALSE@libmudflapth =
@LIBMUDFLAPTH_TRUE@libmudflapth = libmudflapth.la
toolexeclib_LTLIBRARIES = libmudflap.la $(libmudflapth)
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