[Qemu-devel] [PATCH 08/40] Add vcmpequ{b, h, w} and vcmpgt{s, u}{b, h, w} instructions.

[Nathan Froyd]

Signed-off-by: Nathan Froyd <address@hidden>
---
 target-ppc/helper.h    |    9 +++++++++
 target-ppc/op_helper.c |   34 ++++++++++++++++++++++++++++++++++
 target-ppc/translate.c |   10 ++++++++++
 3 files changed, 53 insertions(+), 0 deletions(-)

diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 196106e..efe7a1a 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -123,6 +123,15 @@ DEF_HELPER_3(vminuw, void, avr, avr, avr)
 DEF_HELPER_3(vmaxub, void, avr, avr, avr)
 DEF_HELPER_3(vmaxuh, void, avr, avr, avr)
 DEF_HELPER_3(vmaxuw, void, avr, avr, avr)
+DEF_HELPER_3(vcmpequb, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpequh, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpequw, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtub, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtuh, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtuw, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtsb, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtsh, i32, avr, avr, avr)
+DEF_HELPER_3(vcmpgtsw, i32, avr, avr, avr)
 
 DEF_HELPER_1(efscfsi, i32, i32)
 DEF_HELPER_1(efscfui, i32, i32)
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index 367c366..5daa62f 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -2007,6 +2007,40 @@ VAVG(w, s32, int64_t, u32, uint64_t)
 #undef VAVG_DO
 #undef VAVG
 
+#define VCMP(suffix, compare, element)                                  \
+    uint32_t helper_vcmp##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
+    {                                                                   \
+        uint32_t ones = (sizeof (a->element[0]) == 4                    \
+                         ? 0xffffffff                                   \
+                         : (sizeof (a->element[0]) == 2                 \
+                            ? 0xffff                                    \
+                            : 0xff));                                   \
+        uint32_t all = ones;                                            \
+        uint32_t none = 0;                                              \
+        int i;                                                          \
+        for (i = 0; i < ARRAY_SIZE(r->element); i++) {                  \
+            uint32_t result = (a->element[i] compare b->element[i] ? ones : 
0x0); \
+            switch (sizeof (a->element[0])) {                           \
+            case 4: r->u32[i] = result; break;                          \
+            case 2: r->u16[i] = result; break;                          \
+            case 1: r->u8[i] = result; break;                           \
+            }                                                           \
+            all &= result;                                              \
+            none |= result;                                             \
+        }                                                               \
+        return ((all != 0) << 3) | ((none == 0) << 1);                  \
+    }
+VCMP(equb, ==, u8)
+VCMP(equh, ==, u16)
+VCMP(equw, ==, u32)
+VCMP(gtub, >, u8)
+VCMP(gtuh, >, u16)
+VCMP(gtuw, >, u32)
+VCMP(gtsb, >, s8)
+VCMP(gtsh, >, s16)
+VCMP(gtsw, >, s32)
+#undef VCMP
+
 #define VMINMAX_DO(name, compare, element)                              \
     void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)      \
     {                                                                   \
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 967d9da..7ebdb21 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -6233,6 +6233,16 @@ GEN_VXFORM(vavgsw, 1, 22);
     GEN_VXRFORM1(name, name, #name, opc2, opc3)                      \
     GEN_VXRFORM1(name, name##_, #name ".", opc2, (opc3 | (0x1 << 4)))
 
+GEN_VXRFORM(vcmpequb, 3, 0)
+GEN_VXRFORM(vcmpequh, 3, 1)
+GEN_VXRFORM(vcmpequw, 3, 2)
+GEN_VXRFORM(vcmpgtsb, 3, 12)
+GEN_VXRFORM(vcmpgtsh, 3, 13)
+GEN_VXRFORM(vcmpgtsw, 3, 14)
+GEN_VXRFORM(vcmpgtub, 3, 8)
+GEN_VXRFORM(vcmpgtuh, 3, 9)
+GEN_VXRFORM(vcmpgtuw, 3, 10)
+
 /***                           SPE extension                               ***/
 /* Register moves */
 
-- 
1.6.0.5