diff mbox series

[09/33] target/ppc: Implement pdepd instruction

Message ID 20211021194547.672988-10-matheus.ferst@eldorado.org.br (mailing list archive)
State New, archived
Headers show
Series PowerISA v3.1 instruction batch | expand

Commit Message

Matheus K. Ferst Oct. 21, 2021, 7:45 p.m. UTC 
From: Matheus Ferst <matheus.ferst@eldorado.org.br>

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
 target/ppc/helper.h                        |  1 +
 target/ppc/insn32.decode                   |  1 +
 target/ppc/int_helper.c                    | 18 ++++++++++++++++++
 target/ppc/translate/fixedpoint-impl.c.inc | 12 ++++++++++++
 4 files changed, 32 insertions(+)

Comments

Richard Henderson Oct. 23, 2021, 12:04 a.m. UTC | #1 
On 10/21/21 12:45 PM, matheus.ferst@eldorado.org.br wrote:
> From: Matheus Ferst<matheus.ferst@eldorado.org.br>
> 
> Signed-off-by: Matheus Ferst<matheus.ferst@eldorado.org.br>
> ---
>   target/ppc/helper.h                        |  1 +
>   target/ppc/insn32.decode                   |  1 +
>   target/ppc/int_helper.c                    | 18 ++++++++++++++++++
>   target/ppc/translate/fixedpoint-impl.c.inc | 12 ++++++++++++
>   4 files changed, 32 insertions(+)

Same comments re ifdefs and target_long, but otherwise

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 115bdf474a..4a87e1258b 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -49,6 +49,7 @@  DEF_HELPER_3(sraw, tl, env, tl, tl)
 DEF_HELPER_FLAGS_2(cfuged, TCG_CALL_NO_RWG_SE, i64, i64, i64)
 DEF_HELPER_FLAGS_2(CNTLZDM, TCG_CALL_NO_RWG_SE, i64, i64, i64)
 DEF_HELPER_FLAGS_2(CNTTZDM, TCG_CALL_NO_RWG_SE, i64, i64, i64)
+DEF_HELPER_FLAGS_2(PDEPD, TCG_CALL_NO_RWG_SE, i64, i64, i64)
 #if defined(TARGET_PPC64)
 DEF_HELPER_FLAGS_2(cmpeqb, TCG_CALL_NO_RWG_SE, i32, tl, tl)
 DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl)
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 3d692e9e6a..ff70b3e863 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -205,6 +205,7 @@  ADDPCIS         010011 ..... ..... .......... 00010 .   @DX
 CFUGED          011111 ..... ..... ..... 0011011100 -   @X
 CNTLZDM         011111 ..... ..... ..... 0000111011 -   @X
 CNTTZDM         011111 ..... ..... ..... 1000111011 -   @X
+PDEPD           011111 ..... ..... ..... 0010011100 -   @X
 
 ### Float-Point Load Instructions
 
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index efda78ed8e..ba8ff1a475 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -420,6 +420,24 @@  uint64_t helper_CNTTZDM(uint64_t src, uint64_t mask)
     return count;
 }
 
+uint64_t helper_PDEPD(uint64_t src, uint64_t mask)
+{
+    int i, o;
+    uint64_t result = 0;
+
+    if (mask == -1) {
+        return src;
+    }
+
+    for (i = 0; mask != 0; i++) {
+        o = ctz64(mask);
+        mask &= mask - 1;
+        result |= ((src >> i) & 1) << o;
+    }
+
+    return result;
+}
+
 /*****************************************************************************/
 /* PowerPC 601 specific instructions (POWER bridge) */
 target_ulong helper_div(CPUPPCState *env, target_ulong arg1, target_ulong arg2)
diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc
index 8c66fca96a..c86b4621b8 100644
--- a/target/ppc/translate/fixedpoint-impl.c.inc
+++ b/target/ppc/translate/fixedpoint-impl.c.inc
@@ -439,3 +439,15 @@  static bool trans_CNTTZDM(DisasContext *ctx, arg_X *a)
 #endif
     return true;
 }
+
+static bool trans_PDEPD(DisasContext *ctx, arg_X *a)
+{
+    REQUIRE_64BIT(ctx);
+    REQUIRE_INSNS_FLAGS2(ctx, ISA310);
+#if defined(TARGET_PPC64)
+    gen_helper_PDEPD(cpu_gpr[a->ra], cpu_gpr[a->rt], cpu_gpr[a->rb]);
+#else
+    qemu_build_not_reached();
+#endif
+    return true;
+}