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authorChristian Borntraeger <borntraeger@de.ibm.com>2015-10-01 10:49:43 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2015-10-02 13:31:52 +0200
commitaf3c15fee54e841d859d003b90a88042daf6cd7a (patch)
treea93da3922f2fee871a7d54d0aa1f9deb580d6e98 /pc-bios
parentb2312c680084ea18cd55fa7093397cad2224ec14 (diff)
downloadqemu-arm-af3c15fee54e841d859d003b90a88042daf6cd7a.tar.gz
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 <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Message-Id: <1443689387-34473-2-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'pc-bios')
-rw-r--r--pc-bios/s390-ccw/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile
index 746603a315..15e423274f 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