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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/h8300/lib/ashldi3.c | |
parent | Initial commit. (diff) | |
download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/h8300/lib/ashldi3.c')
-rw-r--r-- | arch/h8300/lib/ashldi3.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/h8300/lib/ashldi3.c b/arch/h8300/lib/ashldi3.c new file mode 100644 index 000000000..430720c0c --- /dev/null +++ b/arch/h8300/lib/ashldi3.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "libgcc.h" + +DWtype +__ashldi3(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.low = 0; + w.s.high = (UWtype) uu.s.low << -bm; + } else { + const UWtype carries = (UWtype) uu.s.low >> bm; + + w.s.low = (UWtype) uu.s.low << b; + w.s.high = ((UWtype) uu.s.high << b) | carries; + } + + return w.ll; +} |