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author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/openbios/libgcc/__udivmodti4.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/openbios/libgcc/__udivmodti4.c')
-rw-r--r-- | qemu/roms/openbios/libgcc/__udivmodti4.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/qemu/roms/openbios/libgcc/__udivmodti4.c b/qemu/roms/openbios/libgcc/__udivmodti4.c new file mode 100644 index 000000000..e373c59e6 --- /dev/null +++ b/qemu/roms/openbios/libgcc/__udivmodti4.c @@ -0,0 +1,31 @@ +#include "libgcc.h" + +__uint128_t __udivmodti4(__uint128_t num, __uint128_t den, __uint128_t *rem_p) +{ + __uint128_t quot = 0, qbit = 1; + + if ( den == 0 ) { + __divide_error(); + return 0; /* If trap returns... */ + } + + /* Left-justify denominator and count shift */ + while ( (__int128_t)den >= 0 ) { + den <<= 1; + qbit <<= 1; + } + + while ( qbit ) { + if ( den <= num ) { + num -= den; + quot += qbit; + } + den >>= 1; + qbit >>= 1; + } + + if ( rem_p ) + *rem_p = num; + + return quot; +} |