[Qemu-devel] [PATCH v1 4/8] target-ppc: add vabsdu[b, h, w] instructions

[Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>]

From: Sandipan Das <sandipandas1990@gmail.com>

Adds following instructions:

vabsdub: Vector Absolute Difference Unsigned Byte
vabsduh: Vector Absolute Difference Unsigned Halfword
vabsduw: Vector Absolute Difference Unsigned Word

Signed-off-by: Sandipan Das <sandipandas1990@gmail.com>
[ use ISA300 define and abs(). Drop etype ]
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
---
 target-ppc/helper.h             |  3 +++
 target-ppc/int_helper.c         | 22 ++++++++++++++++++++++
 target-ppc/translate/vmx-impl.c |  9 +++++++++
 target-ppc/translate/vmx-ops.c  |  6 +++---
 4 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 27f2638..1e68060 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -118,6 +118,9 @@ DEF_HELPER_3(vsubudm, void, avr, avr, avr)
 DEF_HELPER_3(vavgub, void, avr, avr, avr)
 DEF_HELPER_3(vavguh, void, avr, avr, avr)
 DEF_HELPER_3(vavguw, void, avr, avr, avr)
+DEF_HELPER_3(vabsdub, void, avr, avr, avr)
+DEF_HELPER_3(vabsduh, void, avr, avr, avr)
+DEF_HELPER_3(vabsduw, void, avr, avr, avr)
 DEF_HELPER_3(vavgsb, void, avr, avr, avr)
 DEF_HELPER_3(vavgsh, void, avr, avr, avr)
 DEF_HELPER_3(vavgsw, void, avr, avr, avr)
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 15947ad..2b375b4 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -629,6 +629,28 @@ VAVG(w, s32, int64_t, u32, uint64_t)
 #undef VAVG_DO
 #undef VAVG
 
+#define VABSDU_DO(name, element)                                        \
+void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)           \
+{                                                                       \
+    int i;                                                              \
+                                                                        \
+    for (i = 0; i < ARRAY_SIZE(r->element); i++) {                      \
+        r->element[i] = abs(a->element[i] - b->element[i]);             \
+    }                                                                   \
+}
+
+/* VABSDU - Vector absolute difference unsigned
+ *   name    - instruction mnemonic suffix (b: byte, h: halfword, w: word)
+ *   element - element type to access from vector
+ */
+#define VABSDU(type, element)                   \
+    VABSDU_DO(absdu##type, element)
+VABSDU(b, u8)
+VABSDU(h, u16)
+VABSDU(w, u32)
+#undef VABSDU_DO
+#undef VABSDU
+
 #define VCF(suffix, cvt, element)                                       \
     void helper_vcf##suffix(CPUPPCState *env, ppc_avr_t *r,             \
                             ppc_avr_t *b, uint32_t uim)                 \
diff --git a/target-ppc/translate/vmx-impl.c b/target-ppc/translate/vmx-impl.c
index a58aa0c..f4ee05b 100644
--- a/target-ppc/translate/vmx-impl.c
+++ b/target-ppc/translate/vmx-impl.c
@@ -285,8 +285,17 @@ GEN_VXFORM(vminsh, 1, 13);
 GEN_VXFORM(vminsw, 1, 14);
 GEN_VXFORM(vminsd, 1, 15);
 GEN_VXFORM(vavgub, 1, 16);
+GEN_VXFORM(vabsdub, 1, 16);
+GEN_VXFORM_DUAL(vavgub, PPC_ALTIVEC, PPC_NONE, \
+                vabsdub, PPC_NONE, PPC2_ISA300)
 GEN_VXFORM(vavguh, 1, 17);
+GEN_VXFORM(vabsduh, 1, 17);
+GEN_VXFORM_DUAL(vavguh, PPC_ALTIVEC, PPC_NONE, \
+                vabsduh, PPC_NONE, PPC2_ISA300)
 GEN_VXFORM(vavguw, 1, 18);
+GEN_VXFORM(vabsduw, 1, 18);
+GEN_VXFORM_DUAL(vavguw, PPC_ALTIVEC, PPC_NONE, \
+                vabsduw, PPC_NONE, PPC2_ISA300)
 GEN_VXFORM(vavgsb, 1, 20);
 GEN_VXFORM(vavgsh, 1, 21);
 GEN_VXFORM(vavgsw, 1, 22);
diff --git a/target-ppc/translate/vmx-ops.c b/target-ppc/translate/vmx-ops.c
index 4d4a62e..abdef6e 100644
--- a/target-ppc/translate/vmx-ops.c
+++ b/target-ppc/translate/vmx-ops.c
@@ -69,9 +69,9 @@ GEN_VXFORM(vminsb, 1, 12),
 GEN_VXFORM(vminsh, 1, 13),
 GEN_VXFORM(vminsw, 1, 14),
 GEN_VXFORM_207(vminsd, 1, 15),
-GEN_VXFORM(vavgub, 1, 16),
-GEN_VXFORM(vavguh, 1, 17),
-GEN_VXFORM(vavguw, 1, 18),
+GEN_VXFORM_DUAL(vavgub, vabsdub, 1, 16, PPC_ALTIVEC, PPC_NONE),
+GEN_VXFORM_DUAL(vavguh, vabsduh, 1, 17, PPC_ALTIVEC, PPC_NONE),
+GEN_VXFORM_DUAL(vavguw, vabsduw, 1, 18, PPC_ALTIVEC, PPC_NONE),
 GEN_VXFORM(vavgsb, 1, 20),
 GEN_VXFORM(vavgsh, 1, 21),
 GEN_VXFORM(vavgsw, 1, 22),
-- 
2.7.4