On 26/5/24 21:42, Richard Henderson wrote:
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
target/sparc/helper.h | 4 ++++
target/sparc/insns.decode | 5 +++++
target/sparc/translate.c | 9 +++++++++
target/sparc/vis_helper.c | 40 +++++++++++++++++++++++++++++++++++++++
4 files changed, 58 insertions(+)
+uint64_t helper_fcmpeq8(uint64_t src1, uint64_t src2)
+{
+ uint64_t a = src1 ^ src2;
+ uint64_t m = 0x7f7f7f7f7f7f7f7fULL;
+ uint64_t c = ~(((a & m) + m) | a | m);
+
+ /* a.......b.......c.......d.......e.......f.......g.......h....... */
+ c |= c << 7;
+ /* ab......bc......cd......de......ef......fg......gh......h....... */
+ c |= c << 14;
+ /* abcd....bcde....cdef....defg....efgh....fgh.....gh......h....... */
+ c |= c << 28;
+ /* abcdefghbcdefgh.cdefgh..defgh...efgh....fgh.....gh......h....... */
+ return c >> 56;
+}
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
