From: Christian Borntraeger Date: Thu, 1 Oct 2015 08:49:43 +0000 (+0200) Subject: pc-bios/s390-ccw: avoid floating point operations X-Git-Tag: v2.5.0-rc0~86^2~4 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=af3c15fee54e841d859d003b90a88042daf6cd7a;p=thirdparty%2Fqemu.git pc-bios/s390-ccw: avoid floating point operations Some gcc versions (e.g. Fedora 22 gcc 5.1.1) seem to use floating point registers for spilling and filling of general purpose registers. As the BIOS does not activate the AFP register setting of CR0 this can cause data exception program checks. Disallow floating point in the BIOS as a simple solution. Signed-off-by: Christian Borntraeger Reviewed-by: David Hildenbrand Signed-off-by: Jens Freimann Message-Id: <1443689387-34473-2-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger --- diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile index 746603a315c..15e423274f0 100644 --- a/pc-bios/s390-ccw/Makefile +++ b/pc-bios/s390-ccw/Makefile @@ -10,7 +10,8 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/s390-ccw) .PHONY : all clean build-all OBJECTS = start.o main.o bootmap.o sclp-ascii.o virtio.o -CFLAGS += -fPIE -fno-stack-protector -ffreestanding -fno-delete-null-pointer-checks +CFLAGS += -fPIE -fno-stack-protector -ffreestanding +CFLAGS += -fno-delete-null-pointer-checks -msoft-float LDFLAGS += -Wl,-pie -nostdlib build-all: s390-ccw.img