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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-11-01 19:57:44 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2018-11-04 10:04:40 +0000 |
| commit | 7370981bd1ef58b3c20ba8b83cc342d1c61bc773 (patch) | |
| tree | 5e16d64060c9341aba4725eea253d53ba1b969ab /include/fpu | |
| parent | 7d56239f159afc2e7bd42623947e56ba48f37836 (diff) | |
| download | qemu-7370981bd1ef58b3c20ba8b83cc342d1c61bc773.zip qemu-7370981bd1ef58b3c20ba8b83cc342d1c61bc773.tar.gz qemu-7370981bd1ef58b3c20ba8b83cc342d1c61bc773.tar.bz2 | |
softfloat: Don't execute divdeu without power7
The divdeu instruction was added to ISA 2.06 (Power7).
Exclude this block from older cpus.
Fixes: 27ae5109a2ba (softfloat: Specialize udiv_qrnnd for ppc64)
Reported-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/fpu')
| -rw-r--r-- | include/fpu/softfloat-macros.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h index c86687f..b1d772e 100644 --- a/include/fpu/softfloat-macros.h +++ b/include/fpu/softfloat-macros.h @@ -647,8 +647,8 @@ static inline uint64_t udiv_qrnnd(uint64_t *r, uint64_t n1, asm("dlgr %0, %1" : "+r"(n) : "r"(d)); *r = n >> 64; return n; -#elif defined(_ARCH_PPC64) - /* From Power ISA 3.0B, programming note for divdeu. */ +#elif defined(_ARCH_PPC64) && defined(_ARCH_PWR7) + /* From Power ISA 2.06, programming note for divdeu. */ uint64_t q1, q2, Q, r1, r2, R; asm("divdeu %0,%2,%4; divdu %1,%3,%4" : "=&r"(q1), "=r"(q2) |