powerpc: Merge time.c and asm/time.h.
We now use the merged time.c for both 32-bit and 64-bit compilation
with ARCH=powerpc, and for ARCH=ppc64, but not for ARCH=ppc32.
This removes setup_default_decr (folds its function into time_init)
and moves wakeup_decrementer into time.c. This also makes an
asm-powerpc/rtc.h.
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 0b0e908..303229b 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -36,6 +36,33 @@
blr
/*
+ * This returns the high 64 bits of the product of two 64-bit numbers.
+ */
+_GLOBAL(mulhdu)
+ cmpwi r6,0
+ cmpwi cr1,r3,0
+ mr r10,r4
+ mulhwu r4,r4,r5
+ beq 1f
+ mulhwu r0,r10,r6
+ mullw r7,r10,r5
+ addc r7,r0,r7
+ addze r4,r4
+1: beqlr cr1 /* all done if high part of A is 0 */
+ mr r10,r3
+ mullw r9,r3,r5
+ mulhwu r3,r3,r5
+ beq 2f
+ mullw r0,r10,r6
+ mulhwu r8,r10,r6
+ addc r7,r0,r7
+ adde r4,r4,r8
+ addze r3,r3
+2: addc r4,r4,r9
+ addze r3,r3
+ blr
+
+/*
* Returns (address we're running at) - (address we were linked at)
* for use before the text and data are mapped to KERNELBASE.
*/
