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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/mips/lib/ashrdi3.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/mips/lib/ashrdi3.c')
-rw-r--r-- | roms/u-boot/arch/mips/lib/ashrdi3.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/roms/u-boot/arch/mips/lib/ashrdi3.c b/roms/u-boot/arch/mips/lib/ashrdi3.c new file mode 100644 index 000000000..f30359b73 --- /dev/null +++ b/roms/u-boot/arch/mips/lib/ashrdi3.c @@ -0,0 +1,27 @@ +#include "libgcc.h" + +long long __ashrdi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + /* w.s.high = 1..1 or 0..0 */ + w.s.high = + uu.s.high >> 31; + w.s.low = uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} |