diff options
Diffstat (limited to 'contrib/gcc/libgcc2.c')
| -rw-r--r-- | contrib/gcc/libgcc2.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/contrib/gcc/libgcc2.c b/contrib/gcc/libgcc2.c index 851bdd0..58ad320 100644 --- a/contrib/gcc/libgcc2.c +++ b/contrib/gcc/libgcc2.c @@ -492,6 +492,30 @@ __ashrdi3 (DWtype u, word_type b) } #endif +#ifdef L_bswapsi2 +UWtype +__bswapsi2 (UWtype u) +{ + return ((((u) & 0xff000000) >> 24) + | (((u) & 0x00ff0000) >> 8) + | (((u) & 0x0000ff00) << 8) + | (((u) & 0x000000ff) << 24)); +} +#endif +#ifdef L_bswapdi2 +UDWtype +__bswapdi2 (UDWtype u) +{ + return ((((u) & 0xff00000000000000ull) >> 56) + | (((u) & 0x00ff000000000000ull) >> 40) + | (((u) & 0x0000ff0000000000ull) >> 24) + | (((u) & 0x000000ff00000000ull) >> 8) + | (((u) & 0x00000000ff000000ull) << 8) + | (((u) & 0x0000000000ff0000ull) << 24) + | (((u) & 0x000000000000ff00ull) << 40) + | (((u) & 0x00000000000000ffull) << 56)); +} +#endif #ifdef L_ffssi2 #undef int int @@ -1862,7 +1886,7 @@ CONCAT3(__div,MODE,3) (MTYPE a, MTYPE b, MTYPE c, MTYPE d) { MTYPE denom, ratio, x, y; - /* ??? We can get better behavior from logarithmic scaling instead of + /* ??? We can get better behavior from logarithmic scaling instead of the division. But that would mean starting to link libgcc against libm. We could implement something akin to ldexp/frexp as gcc builtins fairly easily... */ |
