[Qemu-devel] [PATCH 13/28] target-ppc: Altivec 2.07: Vector Population Count Instructions

[Tom Musta <tommusta@gmail.com>]

This patch adds the Vector Population Count instructions introduced in Power
ISA Version 2.07: vpopcntb, vpopcnth, vpopcntw and vpopcntd.

Signed-off-by: Tom Musta <tommusta@gmail.com>
---
 target-ppc/helper.h     |    4 ++++
 target-ppc/int_helper.c |   14 ++++++++++++++
 target-ppc/translate.c  |   22 ++++++++++++++++++----
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 7ca219f..793877d 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -277,6 +277,10 @@ DEF_HELPER_2(vclzb, void, avr, avr)
 DEF_HELPER_2(vclzh, void, avr, avr)
 DEF_HELPER_2(vclzw, void, avr, avr)
 DEF_HELPER_2(vclzd, void, avr, avr)
+DEF_HELPER_2(vpopcntb, void, avr, avr)
+DEF_HELPER_2(vpopcnth, void, avr, avr)
+DEF_HELPER_2(vpopcntw, void, avr, avr)
+DEF_HELPER_2(vpopcntd, void, avr, avr)
 
 DEF_HELPER_2(xsadddp, void, env, i32)
 DEF_HELPER_2(xssubdp, void, env, i32)
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 7fca9f0..3b67ae3 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -1549,6 +1549,20 @@ VGENERIC_DO(clzd, u64)
 #undef clzw
 #undef clzd
 
+#define popcntb(v) ctpop8(v)
+#define popcnth(v) ctpop16(v)
+#define popcntw(v) ctpop32(v)
+#define popcntd(v) ctpop64(v)
+
+VGENERIC_DO(popcntb, u8)
+VGENERIC_DO(popcnth, u16)
+VGENERIC_DO(popcntw, u32)
+VGENERIC_DO(popcntd, u64)
+
+#undef popcntb
+#undef popcnth
+#undef popcntw
+#undef popcntd
 
 #undef VGENERIC_DO
 
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index ff6ddfc..e2036bb 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7285,6 +7285,19 @@ GEN_VXFORM_NOA(vclzb, 1, 28)
 GEN_VXFORM_NOA(vclzh, 1, 29)
 GEN_VXFORM_NOA(vclzw, 1, 30)
 GEN_VXFORM_NOA(vclzd, 1, 31)
+GEN_VXFORM_NOA(vpopcntb, 1, 28)
+GEN_VXFORM_NOA(vpopcnth, 1, 29)
+GEN_VXFORM_NOA(vpopcntw, 1, 30)
+GEN_VXFORM_NOA(vpopcntd, 1, 31)
+GEN_VXFORM_DUAL(vclzb, PPC_NONE, PPC2_ALTIVEC_207, \
+                vpopcntb, PPC_NONE, PPC2_ALTIVEC_207)
+GEN_VXFORM_DUAL(vclzh, PPC_NONE, PPC2_ALTIVEC_207, \
+                vpopcnth, PPC_NONE, PPC2_ALTIVEC_207)
+GEN_VXFORM_DUAL(vclzw, PPC_NONE, PPC2_ALTIVEC_207, \
+                vpopcntw, PPC_NONE, PPC2_ALTIVEC_207)
+GEN_VXFORM_DUAL(vclzd, PPC_NONE, PPC2_ALTIVEC_207, \
+                vpopcntd, PPC_NONE, PPC2_ALTIVEC_207)
+
 /***                           VSX extension                               ***/
 
 static inline TCGv_i64 cpu_vsrh(int n)
@@ -10481,10 +10494,11 @@ GEN_VAFORM_PAIRED(vmsumshm, vmsumshs, 20),
 GEN_VAFORM_PAIRED(vsel, vperm, 21),
 GEN_VAFORM_PAIRED(vmaddfp, vnmsubfp, 23),
 
-GEN_VXFORM_207(vclzb, 1, 28),
-GEN_VXFORM_207(vclzh, 1, 29),
-GEN_VXFORM_207(vclzw, 1, 30),
-GEN_VXFORM_207(vclzd, 1, 31),
+GEN_VXFORM_DUAL(vclzb, vpopcntb, 1, 28, PPC_NONE, PPC2_ALTIVEC_207),
+GEN_VXFORM_DUAL(vclzh, vpopcnth, 1, 29, PPC_NONE, PPC2_ALTIVEC_207),
+GEN_VXFORM_DUAL(vclzw, vpopcntw, 1, 30, PPC_NONE, PPC2_ALTIVEC_207),
+GEN_VXFORM_DUAL(vclzd, vpopcntd, 1, 31, PPC_NONE, PPC2_ALTIVEC_207),
+
 
 GEN_HANDLER_E(lxsdx, 0x1F, 0x0C, 0x12, 0, PPC_NONE, PPC2_VSX),
 GEN_HANDLER_E(lxsiwax, 0x1F, 0x0C, 0x02, 0, PPC_NONE, PPC2_VSX207),
-- 
1.7.1