diff options
Diffstat (limited to 'arch/h8300/lib/lshrdi3.c')
-rw-r--r-- | arch/h8300/lib/lshrdi3.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/h8300/lib/lshrdi3.c b/arch/h8300/lib/lshrdi3.c new file mode 100644 index 000000000..a86bbe395 --- /dev/null +++ b/arch/h8300/lib/lshrdi3.c @@ -0,0 +1,23 @@ +#include "libgcc.h" + +DWtype __lshrdi3(DWtype u, word_type b) +{ + const DWunion uu = {.ll = u}; + const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; + DWunion w; + + if (b == 0) + return u; + + if (bm <= 0) { + w.s.high = 0; + w.s.low = (UWtype) uu.s.high >> -bm; + } else { + const UWtype carries = (UWtype) uu.s.high << bm; + + w.s.high = (UWtype) uu.s.high >> b; + w.s.low = ((UWtype) uu.s.low >> b) | carries; + } + + return w.ll; +} |