ack/mach/powerpc/libem/cuf8.s

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2007-11-02 18:56:58 +00:00
#
! $Source$
! $State$
! $Revision$
#include "powerpc.h"
.sect .text
! Converts a 32-bit unsigned integer into a 64-bit double.
!
! Stack: ( uint -- double )
.define .cuf8
.cuf8:
addi sp, sp, -4 ! make space for the double
addis r3, r0, 0x4330
stw r3, 0(sp) ! set high word to construct a double
lfd f0, 0(sp) ! load value
la (r3, pivot)
lfd f1, 0(r3) ! load pivot value
fsub f0, f0, f1 ! adjust
stfd f0, 0(sp) ! save value again...
bclr ALWAYS, 0, 0 ! ...and return
.sect .rom
pivot:
.data4 0x43300000
.data4 0x00000000