path: root/lib
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authorHelge Deller <deller@gmx.de>2013-05-05 22:08:22 +0000
committerHelge Deller <deller@gmx.de>2013-05-24 22:30:11 +0200
commit70ef5578dd8011eeafa999a18194d9b548a4d889 (patch)
tree9d6c403711e784ccca4a38761435424e44c27306 /lib
parent17fdfd0851617b6c18c0913364caf2a54171ce85 (diff)
MPILIB: disable usage of floating point registers on parisc
The umul_ppmm() macro for parisc uses the xmpyu assembler statement which does calculation via a floating point register. But usage of floating point registers inside the Linux kernel are not allowed and gcc will stop compilation due to the -mdisable-fpregs compiler option. Fix this by disabling the umul_ppmm() and udiv_qrnnd() macros. The mpilib will then use the generic built-in implementations instead. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'lib')
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/mpi/longlong.h b/lib/mpi/longlong.h
index 095ab157a521..d411355f238e 100644
--- a/lib/mpi/longlong.h
+++ b/lib/mpi/longlong.h
@@ -318,7 +318,8 @@ extern UDItype __udiv_qrnnd();
"rM" ((USItype)(bh)), \
"rM" ((USItype)(al)), \
"rM" ((USItype)(bl)))
-#if defined(_PA_RISC1_1)
+#if 0 && defined(_PA_RISC1_1)
+/* xmpyu uses floating point register which is not allowed in Linux kernel. */
#define umul_ppmm(wh, wl, u, v) \
do { \
union {UDItype __ll; \
@@ -337,7 +338,7 @@ do { \
#define UMUL_TIME 40
#define UDIV_TIME 80
+#if 0 /* #ifndef LONGLONG_STANDALONE */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { USItype __r; \
(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \