diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-10-01 10:49:43 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-10-02 13:31:52 +0200 |
| commit | af3c15fee54e841d859d003b90a88042daf6cd7a (patch) | |
| tree | a93da3922f2fee871a7d54d0aa1f9deb580d6e98 | |
| parent | b2312c680084ea18cd55fa7093397cad2224ec14 (diff) | |
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>
| -rw-r--r-- | pc-bios/s390-ccw/Makefile | 3 |
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 |