[PATCH 23/41] target/sparc: Implement FPCMPEQ8, FPCMPNE8, FPCMPULE8, FPCMPUGT8

[Richard Henderson]

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/helper.h     |  4 ++++
 target/sparc/translate.c  |  9 +++++++++
 target/sparc/vis_helper.c | 40 +++++++++++++++++++++++++++++++++++++++
 target/sparc/insns.decode |  5 +++++
 4 files changed, 58 insertions(+)

diff --git a/target/sparc/helper.h b/target/sparc/helper.h
index 8a5191414e..fb52f31666 100644
--- a/target/sparc/helper.h
+++ b/target/sparc/helper.h
@@ -123,6 +123,10 @@ VIS_CMPHELPER(cmpgt)
 VIS_CMPHELPER(cmpeq)
 VIS_CMPHELPER(cmple)
 VIS_CMPHELPER(cmpne)
+DEF_HELPER_FLAGS_2(fcmpeq8, TCG_CALL_NO_RWG_SE, i64, i64, i64)
+DEF_HELPER_FLAGS_2(fcmpne8, TCG_CALL_NO_RWG_SE, i64, i64, i64)
+DEF_HELPER_FLAGS_2(fcmpule8, TCG_CALL_NO_RWG_SE, i64, i64, i64)
+DEF_HELPER_FLAGS_2(fcmpugt8, TCG_CALL_NO_RWG_SE, i64, i64, i64)
 #endif
 #undef VIS_HELPER
 #undef VIS_CMPHELPER
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 0dc02a3d6e..bc8c314d4c 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -65,14 +65,18 @@
 # define gen_helper_cmask8               ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_cmask16              ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_cmask32              ({ qemu_build_not_reached(); NULL; })
+# define gen_helper_fcmpeq8              ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpeq16             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpeq32             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpgt16             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpgt32             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmple16             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmple32             ({ qemu_build_not_reached(); NULL; })
+# define gen_helper_fcmpne8              ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpne16             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fcmpne32             ({ qemu_build_not_reached(); NULL; })
+# define gen_helper_fcmpule8             ({ qemu_build_not_reached(); NULL; })
+# define gen_helper_fcmpugt8             ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fdtox                ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fexpand              ({ qemu_build_not_reached(); NULL; })
 # define gen_helper_fmul8sux16           ({ qemu_build_not_reached(); NULL; })
@@ -5018,6 +5022,11 @@ TRANS(FPCMPNE32, VIS1, do_rdd, a, gen_helper_fcmpne32)
 TRANS(FPCMPGT32, VIS1, do_rdd, a, gen_helper_fcmpgt32)
 TRANS(FPCMPEQ32, VIS1, do_rdd, a, gen_helper_fcmpeq32)
 
+TRANS(FPCMPEQ8, VIS3B, do_rdd, a, gen_helper_fcmpeq8)
+TRANS(FPCMPNE8, VIS3B, do_rdd, a, gen_helper_fcmpne8)
+TRANS(FPCMPULE8, VIS3B, do_rdd, a, gen_helper_fcmpule8)
+TRANS(FPCMPUGT8, VIS3B, do_rdd, a, gen_helper_fcmpugt8)
+
 static bool do_env_ddd(DisasContext *dc, arg_r_r_r *a,
                        void (*func)(TCGv_i64, TCGv_env, TCGv_i64, TCGv_i64))
 {
diff --git a/target/sparc/vis_helper.c b/target/sparc/vis_helper.c
index 93a6239f41..2d290a440e 100644
--- a/target/sparc/vis_helper.c
+++ b/target/sparc/vis_helper.c
@@ -221,6 +221,46 @@ VIS_CMPHELPER(helper_fcmpeq, FCMPEQ)
 VIS_CMPHELPER(helper_fcmple, FCMPLE)
 VIS_CMPHELPER(helper_fcmpne, FCMPNE)
 
+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;
+}
+
+uint64_t helper_fcmpne8(uint64_t src1, uint64_t src2)
+{
+    return helper_fcmpeq8(src1, src2) ^ 0xff;
+}
+
+uint64_t helper_fcmpule8(uint64_t src1, uint64_t src2)
+{
+    VIS64 s1, s2;
+    uint64_t r = 0;
+
+    s1.ll = src1;
+    s2.ll = src2;
+
+    for (int i = 0; i < 8; ++i) {
+        r |= (s1.VIS_B64(i) <= s2.VIS_B64(i)) << i;
+    }
+    return r;
+}
+
+uint64_t helper_fcmpugt8(uint64_t src1, uint64_t src2)
+{
+    return helper_fcmpule8(src1, src2) ^ 0xff;
+}
+
 uint64_t helper_pdist(uint64_t sum, uint64_t src1, uint64_t src2)
 {
     int i;
diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index 602b4cc648..c94007bf95 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -408,6 +408,11 @@ FCMPEq      10 000 cc:2 110101 .....  0 0101 0111 .....    
\
     FPCMPGT32   10 ..... 110110 ..... 0 0010 1100 .....    @r_d_d
     FPCMPEQ32   10 ..... 110110 ..... 0 0010 1110 .....    @r_d_d
 
+    FPCMPULE8   10 ..... 110110 ..... 1 0010 0000 .....    @r_d_d
+    FPCMPUGT8   10 ..... 110110 ..... 1 0010 1000 .....    @r_d_d
+    FPCMPEQ8    10 ..... 110110 ..... 1 0010 0010 .....    @r_d_d
+    FPCMPNE8    10 ..... 110110 ..... 1 0010 1010 .....    @r_d_d
+
     FMUL8x16    10 ..... 110110 ..... 0 0011 0001 .....    @d_r_d
     FMUL8x16AU  10 ..... 110110 ..... 0 0011 0011 .....    @d_r_r
     FMUL8x16AL  10 ..... 110110 ..... 0 0011 0101 .....    @d_r_r
-- 
2.34.1